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HomeMy WebLinkAboutOROVILLE MASTERSTABLE OF. CONTENTS. I . INTRODUCTION .. - • • • • • 1 II. BACKGROUND .... .. 3 III. DESCRIPTION OF THE PROJECT AND ITS'.LOC.ATI'ON . . 4 A. General . . . . . . . . . . . . . . 4 B. Location, and .Access . . . . . . . . . . . . 4 C. Summary of Policies .. .. . . . . . .. . 4 IV. DESCRIPTION OF T.HE ENVIRONMENTAL SETTING . . . . . . . 8. A. General . . . . . . ... . . . . . 8 B. Natural Environment . . .. . . . . . • . . 8' 1. So'i 1 s.. . . . . . . . . . . 8 2. 'Geology. . .. . . . . . . . . . . . ... . . . 9 3. Seismic Activity .' 9 4. Hydrology . . . . . . . . . . . ... . .. . 9 5. Water Quality . . . . . . . . . 10 6. Vegetation . . . . . . . .. . . . . . 10 7.. Wildlife . . . . . . . . . . . . 11 8. Climatology/Air Quality .... . . . . 12 C. Cultural Environment . . . . . . . 14 1 Population and Land Use . . . . . . . . . . 14 2. Noise 15 3. C irculat:: i _,n . . . . . . . . . _ . . . �.1 9 4. Public and Quasi -Public Services . . . . . . . . 19 5. Development Trends . . . . . . 22. 6. Housing Availability and Supply. 23 . Economic Trends . . . . . . ... . . . . . . . 25 8. Archaeology./History . . . . . . 25 V. ENVIRONMENTAL IMPACT OF THE PROP OSED.ACTION : 27 A. General•.. .'. .. `. 27 B. Impacts and• Mitigations .• 27 1. Geology/Seismicity . . . 27 2. Water Quality . . . . 28 3. Vegetation .. . . . . . . . . . . . . . .. . . 28 4. Air. Quality . . . . . . . ... . . . ... . . . . . . 29 5. Land Use ". . . . . . . . . . . . . . . . 29 6. Noise . . . . . . . . . . . . . . . . . . . 29 7. Circulation . . . . . . . . . . . . . . . . ... 30 8.1 Public anti Quasi -Public Services . . .•. . . . . . 30 9.. Development Trends . . . . . ... . . . . . 31 VI. ADVERSE E'NVIRONMENTAL.IMPAC'TS-WHICH CANNOT BE AVOIDED . . . . .. . . . . . . . . . . . . . . . . 32 .VII.. ALTERNATIVES TO THE PROPOSED ACTION . . . . . . . . 33 A No Project .. ' . 33 B. Modification of Proposed Plan; Runway Length . . . . . . 33 C. Modification of Proposed Plan; Type of Approach . . . 33 VIII. SHORT TERM USES VERSUS LONG TERM PRODUCTIVITY . . . . . . . 35 IX. GROWTH -INDUCING 1MPACTS-OF THE PROPOSED AC'T'ION ., . . . . . 36 X. ORGANIZATIONS. AGENCIES. DOCUMENTS AND PERSONS CONTACTED . . . . . . . ... . . . . . . . . . 37 APPENDIXES 1 Area Map c^, Planning Area Map ,. 3. Soils Map 4,. Noise Calculations 5. Initial. Study 6. Effects of Noise on People 7. Noise Levels Related to Health 8. Land Use' Compatible with Noise 4:7 01 I. INTRODUCTION The purpose of this report is to inform governmental decision -makers and the general public of the significant environmental impacts which may occur if the proposed Oroville Airport Land Use Plan (ALUP) is adopted by the Butte County Airport_ Land U.se Commission and if the Butte County General Plan and the City of Oroville General Plan are made to conform. This draft Environmental Impact. Report has been prepared in accordance with the requirements of the California Environmental Quality Act and the State Environmental Impact Review Guidelines.. Prior to approval of the Airport Land Use Plan, the Butte County Airport Land Use Commission shall review this draft, the comments received and the responses to the various comments, and then certify that the information has been considered. An Environmental Impact Report (E.I.R.) is required for the proposed Airport Land Use Plan because the plan would allow, encourage and guide substantial development which could affect the Oroville Airport and the lands in the vicinity, and many.aspects of community life in the area. This E.I.R. not only identifies the unwanted negative changes which could take place in the future but also indicates the alternatives, actions and conditions which would avoid, miniiriize or reduce the significant impacts identified. Airport land use plans establish a framework of p_)licies and standards for future development, but. they do not specify all of the details of that development and they cannot predict which development will actually take place nor when. Consequently, this report must speculate on potential impacts in a general manner and is not as exact as an impact analysis for a specific subdivision, rezoning or construction project. Future environmental assessments for individual projects can reference any part of this E.I.R. or otherwise use the information contained within. Any mitigation measures suggested herein will also guide the development of specific measures to be applied to individual projects whose approval is subject to environmental review requirements. This Airport Land Use Plan E.I.R. can be most beneficial to decision -makers focusing on future decisions on proposed development projects within the area by analyzing cumulative, area -wide and long-range impacts which are difficult to assess on a protect -.by -project basis. It should be noted that this impact report does not consider the environmental impacts of specific projects which may be subsequently implemented in compliance with the plan, nor does it exempt any such projects from complying with the requirements of CEQA. The objectives and policies of the Oroville Airport Land Use Plan are directed towards orderly growth of the airport an'.J its planning area, and to assure that development occurs in a manner and location that is consistent with important social, economic and environmental goals. 1 I'S II. BACKGROUND In accordance with state law, enacted to attain compatible land use surrounding airports, and requiring each county to create an Airport Land.Use Commission (ALUC), the Board of. Supervisors and the Butte County City Selection Committee, in accordance with California Utility Code Section 21670 et seq., have appointed said Commission. State law requires such Commissions to develop Airport Land Use Plans. It is optional to include other general aviation or military airports in such plans. In this Airport Land Use Plan, the City of Oroville public airport is addressed in detail. This plan is intended to complement and enhance the local comprehensive planning process of agencies responsible for the land .use in areas surrounding the Oroville Airport. Basic goals of the Airport. Land Use Commission are: 1. Preservation o.f.navigable air space around airports, 2. General safety -of people and.property around airports, 3. Mitigation of aircraft impacts. Powers and duties of the Airport Land Use Commission as set forth in Sections 21670=21678 of the Public Utilities Code are: 1. To assist local agencies in insuring compatible land uses in the vicinity of existing airports to the extent that land in the vicinity of -such airports is not.already devoted to incompatible uses, 2. To coordinate planning at the state, regional and local levels so as to provide for -the -orderly development of air transportation while at the same -time protecting, the publichealth*, safety and welfare, 3. To -prepare and adopt an.Airport Land Use Plan, 4. To review the plans, regulations and other actions of local agencies and airport• operators. i It is.important to recognize that the Commission has no powers or control over.the following.: 1. Lands presently developed in airport incompatible uses, 2. The operation of the Oroville Airport. This plan establishes planning boundaries around -the Oroville Airport area of influence. It sets forth appropriate land use, including building height restrictions, to the extent that -such land is not already devoted to incompatible uses. 3 r: III. DESCRIPTION OF THE PROJECT AND ITS LOCATION A. General The "project" is a set of long-range goals and the policies which will direct land use surrounding the Oroville Municipal Airport in attaining the type of growth and development compatible with airport operations within.the next twenty years. These goals and policies will be confined to the Oroville Mun-icipal Airport planning area (Appendixes 1,,2). This report will summarize the proposed goals and policies and the impacts that may occur due'to the implementation of the plan. B. Location and Access The airport is located approximately three miles southwest of central Oroville. Oroville Dam Boulevard'(State Route 162) runs along the north boundary of the airport and connects State Highway 99E to the west with Highway 70 to the east thereby providing good access from Oroville and its environs. The access road leading from Oroville Dam Boulevard to the terminal building is a two-lane asphalt surfaced road in good condition with unimproved shoulders. The road terminates at the south end of the existing apron area. The parking lot i.idjacentt to the terminal fronts,on the access road. The access road and parking lot are adequate for present needs. There are no hazardous obstructions to aircraft using the airport., The airspace in the vicinity of the airport was checked,and no violations of the Federal Aviation Administration. Part 77, were found. It should be noted.that in -performing an inventory of the existing airport 'facilities no violations,of the Federal Aviation Administration or California Department of Aeronautics rules and regulations were noted. C. Summary of Policies Introduction The objective of the Airport Land Use Commission is to promote the orderly development of lands contiguous,to the Orroville.Airport in a manner which safeguards the general welfare.of, theinhabitants', assures the safety of air navigation, and maintains the utility of,the Oroville Airport'. To fulfill -this objective, airport areas of inflLi'ence which encompass those..areas.where compatible land use planning is'essential have been developed for -the Oroville Airport. The following policy goals each apply.to its special zone within the airport-area'of influence, and addr'e'ss three areas .of concern: IF, 1. Preservation of navigable air space 2. General safety of'people and property 3. Mitigation of airport impact ..The ALUP recognizes the need for consistent, rational application of criteria for land use around the Oroville Airport. It also recognizes that -the Oroville Airport serves different aircraft types in different quantities, in different operating environments, and that each impacts its sur.r.oundings.in a different way.''Therefore, the policies presented in the plan are general.in nature. They are based on federal and state :standards for noise and safety and are designed to be adapted to i.ndividual cases.. Within the restraint imposed by the ALUC's height, noise, and safety policy., land use planning for local need is left entirely to local jurisdiction. General Policy Within the boundaries of the'airport area of. -influence, the ALUC recognizes its authority and jurisdiction is limited by the California Public Utilities Code 1/. General policies of the Commission shall be: 1.' The -Airport Land Use Plan will set general parameters for development of specific regulations and zoning for land.uses within the :area of influence of the Oroville,Airport as guidelines for each member agency in -the development of amendment of General Plans, Specific Plans, Zoning Ordinances, or other regulations required to achieve the goals of'the Airport Land Use Plan for the Oroville Airport. 2. For member agencies the Commission will assist them in reviewing changes in General Plans or other community plan changes and propose new land use contiguous to airports (within the airport area of influence) to ensure consistency with the ALUC prior to formal actions by cities or county. Coordination of such efforts -also will be the responsibility of the Commission's staff. 3. ALUC's.,staff shall work closely with the Oroville City and airport management to implement provisions of the ,Airport Land Use Plan and to.achieve the objectives of the ALUC. 4. ALUC staff will work with member jurisdictions to develop procedures which will facilitate identification of parcels -within the zone and. safety area of the airport area of influence prior to actions such as zoning changes or issuance of building pe.rtr►its to assure compliance.with the goals of the ALUP. 1/Section 25774 et seq., Public Utilities Code. 5 5. In creation of airport areas of influence, the ALUC shall use FAR, Part 77 contours and CNEL noise contours from'the best sources available to it.. The ALUC shall revise and/or update CNEL contours whenever operational changes occur. 6. The ALUC has no jurisdiction over airport oper•ation.s which include the number and type of aircraft taking off and landing, time of aircraft activity and airport traffic pattern used. 7. The ALUC has jurisdiction over land uses within the airport area of influence except to the extent that land within the area of influence is already devoted to incompatible uses. Airport.Height Restriction Policy, Assuring the"safe passage of aircraft into, out of and around the Oroville Airport by safeguarding and preserving navigable air space is the objective of airport height restriction policies. Federal Aviation Regulations; Part 77 sets forth criteria for describing the navigable air space requirement of each airport., Objects which penetrate above imaginary surfaces described - in FAR, Part 77 can impair safety and raise weather minimums for instrument approaches, thereby.decreasing the operational cap'a'city of"an airport. ALU�C height restriction policies shall be'to Designate height restriction plans for the Or.ov.ille. Airport as laid out in Chapter 3 of the ALUP, Restrict the development of new incompatible land uses within airport; height restriction areas which penetrate FAR, Part 77 surfaces, Review'any specific projects within the airport area of influence which may pose an intrusion into navigable air space. Airport Safety Policy The ALUC safety policy objective is to assure the safety of people and property 'in airport environs from accidents involving aircraft and to minimize-adversel.influences of land uses on runway approach and clear zones on aircraft landing or,taking off. ALUC safety policy shall be: To designate airport safety areas identified according to degree of hazard'as safety,area 1 (clear.zone), safety area 2 (approach zone), and safety area 3 (general airport traffic pattern zone). on To'restrict development of new,- incompatible land uses within'` airport safety areas 1, 2, and 3. Airport Noise Policy The A-LUC noise policy objective is to assure that.'new land uses in airport environs are compatible with aircraft, -generated noise,. compatible land use.planning and acoustical installation in new structures. The review of the ALUC requires the development and enforce*ment'of regulation involving zoning for general.compatibility, site planning and acoustical•in,stallation standards. AL•UC noise policy is within the boundary of the 55 CNEL contour as projected in the. Airport Land Use -Plan. 1. Institutional land uses such as schools,,hospitals,, convalescent homes and other inpatient health care,fac.ilities'shall not be permitted, 2. 'Multi -family residential land uses may 'permitted subject to an. acoustical analysis showing that all structures have been designed to limit interior noise level in any habitable room to 45,dB CNEL, within the boundaries of the 55 'CNEL contour as projected in the Airpor,t.Land .Use.Plan. Compliance with the acoustical analysis requirement,shall be as specified in Section"28, Noise Insulation Standards, Title 25, Chapter -1, Subchapter 1, Article' 4.of the California.Administrative Code. 7 . IV. DESCRIPTION OF THE ENVIRONMENTAL SETTING A. General. Oroville is located on the eastern edge of the Sacramento Valley in the lowest foothills of the Sierra Nevada range. -The airport planning area occupies a valley floor type environment.with annual'gras.ses and valley oak as its primary vegetation. Elevation in this area is generally between 100-200 feet-A.S.L. Agriculture is not of primary importance; however, there are some orange, mandarin and olive orchards in the planning area. There are also large parcels of land that are suited for cattle grazing. Oroville is the economic center. -for the"planning.area as well as the outdoor recreation center for a large portion of the north "state. The recreational and,t.ourist opportunities that exist. as a result of the Oroville Dam and its related facilities are numer-)us. Lake Oroville is popular .f-or�various types of .boating, fishing and skiing. There are also hiking and cainping'facilities available. The City is in the process of upgrading its historical sites in an attempt to further expand its tourist attraction. B. Natural Environment 1 Soils . The Soils Map (Appendix 3), along with this text, shows general patterns of the dominant soils for the Oroville area. This soils map is intended for general planning purposes only and decisions regarding specific sites or proposals should be based on more accurate soils tests. The Oroville Soil Survey Report..contains extensive information regarding the characteristics common to each. Two broad categories of soils can be identified in' the Oroville Airport planning area alluvial soils.and,terrace soils. Of these, the alluvial soils, particularly the Columbia soils, are considered agriculturally important., rated as Class I-II by the Soil Conservation* Service (SCS). Nearly all of these soils are either built on or were overturned by dredging. The terrace soils, particularly the Redding soils, are considered Class IV soils (good to marginal) and are used for livestock grazing and other.smallei:orchards, mainly olives and citrus. Commercial.livestock grazing is largely confined to peripheral areas where parcel sizes are large enough to be economically useful and fewer, conflicts with residential development exist. 8 2. Geology The natural earth materials present in the subject area can be divided into three major groups for planning purposes: Volcanic Rocks: Basaltic lavas cap South Table Mountain and the Campbell Hills to the north and northeast of the airport. Sedimentary Rocks and Older Alluvium: Conglomerate, sandstone and siltstone occur both as moderately consolidated rock units and as poorly consolidated soil types on the flats and lower foothills of the area around Thermalito and the airport.. .Recent Alluvium: Unconsolidated,' coarse gravel and sand is the principal component of the recent alluvium located along the Feather River to the east of the airport. An -extensive discussion of geologic units and their land use capability is contained in the Survey Report. 3. Seismic Activity Movement of the Cleveland Hill Fault on August 1, 1;975, was apparently the result of crustal strain developed in the Foothill Shear Zone. The Cleveland Hill Fault, located about nine miles east'of the Orovi.11e Airport, trends north-northwest and is approximately 10 miles long. It is presently the only known active fault within Butte County. 4. Hvdrolo The Oroville Airport plan area is located downstream of the Oroville Dam and is bordered on the southeast by the Feather River. Flooding within the area is not a problem due to the Oroville Dam's control and regulation.of the -river. During periods of heavy rain, releases from spillway may cause localized flooding in the wildlife area south and east of the airport.' The major st=ream which drains the planning area is Ruddy Creek in Thermalito. Lands adjacent to the Feather River are flooded periodically by releases from Lake Oroville. These areas are designated as floodways by the State Reclamation Board and most development is prohibited by law. Thermalito has been affected by flooding and localized drainage problems in past winters. Lake Oroville, the Forebay and'Afterbay provide 'recreational opportunities as well as the primary function of flood control and water conservation. 9 Portions of Thermalito have poor drainage due to the geologic structure of the -area which results in a high water table and localized flooding. Studies have been prepared for the development of a storm drain system throughout Thermalito to reduce flooding problems. 5. Water Quality The quality of water designated for domestic, industrial and.irrigation .uses i -s excellent. The various water supplies are diverted from various branches of the Feather River or pumped from deep wells. The water that is stored in Lake Oroville is transported out of the area via the rivers, canals and aqueducts that are a part of the California State Water Project. 6. Vegetation There are e:'ight habitats located in the Oroville Airport planning area. Open Water:.. consists primarily of various species of algae and plankton. Marsh: tule, bulrush, water -lily and .s'edges are abundant. Willows are sometimes common and algae is the most abundant small plant. Riparian willows, cottonwood, sycamore, and valley oak are dominant. Elderberry, black walnut, and box elder form a mid -story. Blackberry, and poison oak are common shrubs. Many grasses and herbs occur. Grassland: vegetation is largely limited to grasses and herbs less than three feet high. Trees are sparse and widely scattered. There are many,verna,l pools during the rainy -season. Originally, native bunch -grasses were dominant; however, overgrazing caused these to be replaced by annuals such as Bromus and;,Festuca. Common wildflowers are valley goldfields, Johnny tuck, tidy tips, and frying.pan poppy. Valley Woodland: White (valley) oak is the dominant species. It may be located near moist areas where various riparian plants may be located. Wild grape and poison oak are common. Shrubs and grasses and herbs cover the woodland floor. Town -Residential: Native plants necessary for wildlife have been replaced by exotics. However, there are some,exotics that are useful to wildlife: pyracantha, honeysuckle, maples, poplars, bottlebrush, and most domestic nut.an'd fruit_ trees. Open Fields: Located below.'3,000 feet elevation,. these fields are used for grazing and various crops.. Agricultural conversion has resulted in domestic plants with occasional :native species or exotic weeds 10 Orchards: Located.below 3,000 feet elevation. Include agricultural tree farms, eucalyptus groves and some non -crop exotics. Common orchard crops for the Oroville area include olives, oranges and mandarins. Individual rare plants are not located within the Oroville area; however, riparian vegetation as a habitat type is considered to be endangered. This habitat is primarily located along the Feather- River. There.are two relatively small vernal pools in the Thermalito area west of 18th Street. 7, Wildlife There is-a.wide variety of species inhabiting the Or area. A complete listing of the species is too lengthy to include in this report;' however, a partial listing is included as Appendix 3 of the Environmental Impact. Report prepared for the Oroville General Plan Amendment. Many species are associated with a' -particular habitat -- they are as follows: Open Water: Used fall through spring when water birds are wintering here. Mammals include -beaver and muskrat. There are about 98 bird species; -most are migratory and diurnal. Bird species of special concern are the Aleutian Canada goose, bald eagle, and peregrine falcon, which are endangered. The osprey and white pelican populations are diminishing. Marsh: Wildlife use is much greater than it would appear.to be to the casual observer. During fall and.winter large flocks of wintering birds are found.in marsh areas. There are about 14 species of mammals,. most of which are nocturnal.. Commonly observed are muskrat and bats; raccoon, mink and striped skunk are common. There are about 107 species of birds. Species of special concern include those listed under the "open waters" designation and the black rail and yellow -billed cuckoo, which are on the State rare list. Riparian.: The riparian habitat supports the greatest wildlife densities of all terrestrial habitats.. Some species depend on riparian habitat for their continued existence. There are about 32 known mammal species. Frequently seen are deer, gray squirrel, opossum, red bat, cottontail, deer mouse, red fox and ringtail. There'ar.e about 144 known bird species. The.J oss of riparian habitat is of major importance in the decline of the yellow -billed cuckoo, ..: 11 LIE The osprey,�Copper's hawk, sharpshinned hawk, purple martin, willow flycatcher, western blue -bird, Bell's vireo, yellow warbler, and yellow chat have declining populations. Several mammal species,.such as the ringtail, deer mouse and deer are being extirpated due to the loss of riparian habitat. .Beaver and river otter are threatened by flood control.and bank stabilization projects. Grassland: This habitat is commonly underrated as a wildlife habitat. Birds are largely ground 'dwellers. There are about 89 bird species. There are 24 species of mammals. Common are the broad handed mole, pallid bat, black -tailed hare, botta pocket gopher, California meadow mouse and badger. Valley -Woodland: Much of the wildlife activity takes place high in the oaks. There are 83 bird species and.32 mammal -species. Town -Residential: Dependent. upon intensity of all pollution forms, density of human'structure and 'population, domestic animals, and the destruction -of native habitat. Use can be fair if encouraged by human residents. Mammal use most affected with virtual extirpation of all species in areas intensely converted to human use. Bird use reduced.drastically with natives frequently replaced.by undesirable exotics such as starlings and house sparrows.- (Information regarding vegetation and wildlife was extracted from and informational booklet prepared by Jim Snowden of the California Department of Fish and Game entitled Butte County Habitats.) 8. Climatology/Air Quality The general climate of the Oroville area is Mediterranean Warm Summer, characterized by two predominant seasons, composed of hot, dry summers and mild, rainy.winte'rs. Approximately 97% of the annual precipitation, averaging about 28 to 30 inches, occurs during the winter months. Average daily temperatures ranged (in 1978)'from 42.8 in December to 78.9.in July. The winter minimum was 23 degrees F on December 31, 1978, and the summer maximum was 115 degrees F on July 9, 1978. Winter lows are rarely less than 16 degrees F and summer maximums are rarely higher than 116 degrees F. The frost -free growing season averages 7 to 8 months in length, and is favorable to a wide.variety of crops. Prevailing winds are from the south-southwest or from the north-northwest, depending mostly on the season. The south winds are usually related to storm fronts. North winds ar',e.typically associated with high pressure ridging and bring fair weather. The growing season is about -270 days. 12 The Planning Area site is located in the eastern..portion'of the Sacramento Valley air basin. This.air basin is -enclosed by the Sierra Nevada, Cascade and Coastal Ranges. The mountains create a barrier trapping pollutants in the valley at times and limit dispersal. Because the air basin is a natural closed basin, often with poor air circulation and high atmospheric stability, air quality may undergo a very rapid local degradation at any time of the year. This stability, in conjunction-with'a frequent inversion far_tor.which traps the cooler air undera warm air mass., intensifies pollution concentration and tends to hold air pollutants near the ground. Air quality in Oroville, as in the rest of the county, is relatively good, but the standards for carbon.monoxide (,CO), photochemical oxidants (smog), and suspended particulates are occas.ionall.y exceeded, and the County has been designated a non -attainment area by the U.S. Environmental'Protection Agency. Detailed analysis of air quality for Butte County is contained in the Butte County Non -Attainment. Plan published by the Butte County Association of Governments, January 17, 1979. The City of Oroville does not have a monitoring station that would identify local. emissions;' therefore, county -wide data is used. All counties north of Sacramento and Yolo Counties within the Sacramento Air Basin have been designated as non-attainment.areas for photochemical oxidant on the basis of recorded violations at the various county monitoring stations. As a result of the non -attainment status, Butte County has adopted a non -attainment plan which, contains air quality control strategies. Adherence to the plan will help to obtain compliance in a timely manner. The City of Oroville utilizes the Butte County plan and has not developed.additional strategies'.. The planning area is serviced by.an Air Pollution Control District whose major responsibility is to monitor.and regulate the emissions from' stationary sources within the county. They have identified several sources of air pollution Among 'those are mobile 'sources, agricultural burning, fuel combustion, mineral arid.wood industries, and agricultural. operations. It should be noted that pollutants from'mobile sources are decreasing 'due to tighter emission control standards. The decrease in the number of. older vehicles, which are not required to have emission control, is -also a factor in the decline. Types•and Effects of Air Pollution. Hazardousexposure levels vary with the amount of•each,'pollutant and the extent of time exposure occurs. Carbon monoxides begin to be hazardous to most people at concentrations of 100 parts per million (ppm) if exper.i'6hced over a period of several hours. However, some individuals are affected at lower levels of exposure. Nitrogen dioxide, one of several'nitrogen oxide compounds (NOx), is considered very toxic.. This 13 air pollutant affects visibility due to its brown coloring. Ozone, another substance extremely toxic to humans, is emitted in usually low amounts. However, the chemical interaction of nitrogen oxides, certain organic compounds, and sunlight forms ozone in the atmosphere, increasing its concentration. The mixture of pollutants called "smog" is formed by the action of sunlight on the various colorless gases emitted by vehicles, causing a visible, harmful haze within the local atmosphere. Hydrocarbons.and associated airborne particles result from incomplete combustion of fuels and from agricultural burning (rice waste during the autumn months). These substances are known or suspected to be environmental causes of cancer if exposed to for prolonged periods of time. Total suspended particulates (TSP) include hydrocarbons, as well as dust, soot, lead, photochemical smog and other minute or -pulverized pieces of matter. These particulates, such as pesticides and other airborne chemicals and even radioactive particles, are often extremely toxic. Under most concentrations, TSP create a nuisance and objections from people who are exposed to.them. However, individuals with respiratory problems can be severely affected when exposed. Therefore, air pollution is a potential health problem in the area. The State Air Resources Board has the primary responsibility for controlling emissions to achieve improved air quality, implemented locally by the Butte County Air Pollution Control District. (Butte County DEIR for the Chico Area Land Use Plan, 4/82, p. 59) Wind A comprehensive analysis of airport winds has been made. This analysis was compared to the Wind Rose that was prepared as part of the Oroville Airport Plan in 1985. Only minor deviations were noted. The Wind Rose shown on the "Existing Facilities Plan" indicated that the runways are ideally oriented for the winds observed. Coverage for the two runways was computed on the basis of cross wind components not exceeding 15 miles per hour.in accordance with Federal Aviation Administration criteria. Runway 12-30 provides 97.6 percent coverage and Runway 1-19 provides 94.8 percent coverage. The combined coverage on the two runways is excellent, 99 percent or greater. C. Cultural Environment 1. Population and Land Use Population.:densities and land use characteristics within the Oroville Airport plan area consist of at least four distinct types. First, to the east and northeast of the airport, is the area commonly known as' Thermalito.. This area is planned for low- to medium -density residential with.:appurtenant commercial uses, and is developing in that manner. The area immediately to the north of the airport is within the incorporated city limits'of Oroville and is zoned for industrial uses. To the northwest, west and south are rural residential.areas of parcel sizes 14 ranging from 3 to.5 acres in the northeast and 10 acres to,.the south, up to over 100 -acre parcels. Further to the south and west is the The•rmalito Afterbay, part of the.Lake•Oroville Dam system of water management:• To the east and southeast of the airport is an area of historic dredger tailings, the borrow area (.rock source for the Orov.ille Dam), and riparian..habitat along the -Feather River. This area has been set aside as a wildlife area. While the characteristics of the planning,area have not undergone radical change in the last ten to twenty years, the Oroville.area outside the airport plan area has experienced considerable growth,(see Table 1.). That growth is expected to continue on into the year 2000. Additionally, the Oroville'Airport. serves sur•roundin,g areas which are. not generally considered to be in the Oroville area. Most notable are Gridley; Biggs and Richvale, to the west and southwest.. Generally, use• of the Oroville Airport by people from the Gridley -Biggs and Richvale area is limited to private sport flying, and not commercial uses.. Within this larger area there are approx•imately.50,000 people as of the 1980 Census, and most likely from 55,000 to 60,000 people as 'of 1985. 2. Noise The noise environment for'the Oroville Airport area is quite good, with only a..few residential sites being exposed to excessive noise levels. These sites -are located south of the Airport, west of.Larkin Road. In most of the air, port plan area, surface vehicular noise is the primary noise generator with other factors creating a minor. 'intrusive type of noise background." Noise sources in.the Oroville Airport plan area: 1. Major traffic circulation arterials 2. All industrial' processing -plants The Larkin Road Dragstrip 4.. 'Oroville Municipal Airport 5.• 18th•Street-, north, or Oro Dam -- motocross recreational riding 6. Larkin. Road near Timothy -- shooting.range Noise •sensit''ive sites= 1 Rest homes and convalescent homes, 2. Sc, ho.o1 locations S TABLE1 PLANNING AREA POPULATION 1960-1990 1950 1960' 1970 1975` 1980 19`85 1990 1995. 2000 Thermalito, N/A N/A 4,217- 4,811 5,063• •5•,500* 6.,.050* `6;650*. 7,300* (inc-ludes . the airport planning area) Oroville City 5,345 6,115 7,536 7,368 8;683 9,975 10,673* 11,420* 12,219* Orovilie Area 1.9,154 21,060 21.,717. 28,450 35.,400 37,400* 39,363 .45.,6.33' $2,901 . .. Butte County 64,930 .82,030. 101,969 120,901 _143,850 161,000 186,298 -206,684° 225",775 Figures based on past development trends and City annexation policies. 3. Wildlife preservation area. The noise impact on surrounding areas is modest under the current level of airport operations. The 55 dB(A) (Community Noise Equivalent Level) contour extends approximately.1,000 feet beyond the airport property line on the Runway 1-19 centerline extension. The area within this contour is currently uninhabited but could be developed with residences at rural densities, light industrial uses, etc. The level of operations at the airport has been increasing 2 to 5 percent a year. At this rate, 150,000 to 200,000 operations per year can be expected by the year 2000. About 500 of these operations would be corporate jet aircraft. Approximately 80 percent of jet aircraft operations are expected to use Runway 1-19. As airport operations increase, the 55 dB(A) (level day -night) contour will extend about 3,000 feet beyond the airport property boundary. This extended contour would partially or totally enclose 15 of the 20 lots in the subdivided area located immediately southwest of the airport. The approximately contour positions for various operation levels are shown in Appendix 2. Some precautions should be taken in using this contour: 1. This analysis presumes that 90 percent of aircraft operations are during daylight hours. This assumption is enforced by the present lack of runway lighting on Runway 1-19. However, increased nighttime air freight and air taxi service is expected because VASI lighting is scheduled for Runway 1-19 in 1986, with runway lighting scheduled between 1989 and 1991.- " 2. The contour position calculations are based on noise energy, but do not acknowledge that aircraft noise is particularly intrusive. A Ldn level of 55 dB(A) created by aircraft noise is considered less acceptable than an equal level generated by less obtrusive noises of similarenergy content. (see Appendix 4). 3. Propeller aircraft operations dominate the noise contours. Jet aircraft operations, while not dominant in determining noise contours, will produce significant individual intrusive noise occurrences. 4. The analysis assumes no significant jet transport operations. The addition -of a scheduled passenger service using large jets would move the 55 CNEL line outward. The noise impact of jet operations should.be addressed in the Oroville Airport Land Use Plan, and certainly before such service'is initiated., The noise impact of large jet traffic can be adequately represented by a simple outward sh.ift' in the noise contour. Such operations, though infrequent, will cause isolated noise events at significant levels. 17 a. Noise Criteria and Standards There is an inherent.conflict between land use an -I noise generation. A quiet parcel of land has a wider range of -potential uses•, all other factors being equa•l., As noise levels increase, the choice of an appropriate use narrows. The effect of increasing noise level's on residential areas is shown in Appendix h. Noise abatement has a price, sometimes a very high price. Thus planning for land .use involves a balance between a maximum range of use choices and an acceptable level of allowed noise. The criteria shown'in.Appendix 7 are based on prevention of hearing loss or uninhibited activity performance.More widely referenced criteria' are shown in Appendix B. Note D in Appendix 8 is of.considerable local relevance. A quiet outdoor environment is considered one of the assets of the_Oroville area. The maintenance of this asset will require Imore stringent noise standards than may be applied in noisier urban.areas. b. General Noise Control Strategies 1. Noise should be considered as a basic aspect of planning, zoning, and building permit actions. 2. See City of Oroville Ordinance No. 1.280. 3. Noise generated by transportation systems .should be anticipated to allow sufficient lead time to develop mitigation measures.. 4. Enforce vehicle noise emission statutes. 5. Promote a public awareness of noise problems. c. Policies 1. Discourage residential development in areas with an actual -or anticipated day -night average level (Ldn) of noise exceeding 55 dB(A). 2. Require sound insulation and/or other sound barriers in areas with an actual or anticipated noise level of 55 dB(A). 3. Encourage infilling of vacant sites surrounded by development to lessen,growth of traffic-relatad noise. ; 4. Consider a_nd mitigate the noise impacts of,all development, particularly in noise -sensitive areas. 18 5. See City of Oroville Ordinance No. 1380. 6. Pursue completion of the Orovil_le Airport -Land Use Plan currently being prepared by the Airport Land Use Commission (ALUC); to include comprehensive plans for noise -compatible land use and appropriate zoning controls. 7. Promote the preparation of an area transportation study to assist in defining traffic -related noise problems. 8. Mitigate existing traffic noise through the enforcement.of vehicle noise emission statutes, both for on- and off-road uses. 9. Encourage a broader public understanding of the detrimental effects' of noise, and methods for its reduction and prevention. 3.. Circulation The street system in the airport plan area is.functionally divided into arterial, collector and local streets. The major—north—south transportation artery is State Highway 70. Oro Dam Boulevard (SR 162), Grand Avenue and Nelson Avenue provide the majority of western access to the City. The Oroville Area transportation needs are also served by the Orov.11le Municipal Airport, Union Pacific Railroad, Greyhound Bus.Lines, the Butte County Transit and the Oroville Area Transit. Local public transportation is provided by the Oroville Express and the Oroville Area Transit. 4. Public and Quasi -Public Services a. Power Pacific Gas'..and Electric provides the primary power source for the Oroville Airport plan area. Electricity is available to the majority of the planning area. b: Natural. Gas Pacific Gas and Electric provides natural gas to the -area; however, gas line extensions will be necessary in some, cases. C. Telephone Telephone service is available throughout the planning area. In some isolated instances telephone service will not be extended until additional infill connections are committed. 19 d. Water Thermalito Irrigation District (TID) supplies domestic water service to the majority of the Thermalito area. There are no irrigation accounts within the planning area. Water is received from the Thermalito Power. - Canal and six local wells. TID at present serves an estimated population of 7,000 by way of 2,500 active service connections. e. Sewage Wastewater and disposal in the Oroville area is accomplished by means of three separate collection agencies and a centralized sewage, treatment facility together with, in certain areas, individual on-site septic tanks in the outer area of the planning unit. The centralized advanced secondary sewage treatment facility (SC -OR) is owned and operated by the Sewerage Commission - Oroville Region. This facility is designed to accommodate an average flow of 5.31 million gallons per day, with present dry -weather average flows of about 2.0 mgd. The plant was designed to serve an estimated population of 44,500. The current estimated connected population is 17,500. SC -OR has no funded capacity, nor capacity set aside, specifically for industrial waste, toxic or plant operation.. Thermalito Irrigation District became a sewering _agency in 1971 due to the need created by widespread septic failure that resulted in a health hazard in the Thermalito area. This sewage service area (CSA 26) maintains.a gravity -flow system from north to south with one pump station t -o transport effluent across the Feather River to the SC -OR interceptor within 7th Avenue. No public sewer system serves the airport. Sewage disposal is by underground septic tanks and leach lines. The nearest public sewer is located 2,200 feet easterly of the airport across Larkin Road, and runs down Fresno Avenue to Harlan Avenue. Construction drawings and layouts for sewer extension have been prepared in conjunction with a private subdivision. This development would require extension of sewer facilities between Larkin Road and Harlan Avenue. Development of the airport property will require construction of off-site sewer facilities. Extension of sewer facilities to the airport should be deferred until there is a demand, or until grant funds are available from the State and/or Federal Government. Development of private property may cause construction of part of all of the facilities by: private developers, resulting in significant savings•to the City. Stormwater'is disposed of through a system of catch basins, underground pipes, culverts and open ditches that discharge into established natural drainage courses. The existing system is adequate for present uses and can be expanded when additional airport -development occurs. Miscellaneous grading is needed to improve surface drainage in low and ponding areas. ME f. Police Police protection is provided by five agencies in the planning area. 1. Oroville Police Department (OPD): Thi.s.department serves the area within the. Oroville City Limits. This, includes the airport, golf course, and the industrial land to the north of Oro -Dam Blvd. (SR 162) and the airport. 2. Butte'County Sheriff's Department (BCSD): This department serves all of the unincorporated areas of Butte County including the planning area and provides coroner's service to those areas contained within City boundaries. Service is ranked below what is considered to be acceptable. Departmental funds are allocated by the Butte County Board of Supervisors from the general fund. 3. California Highway Patrol (CHP): Provides traffic patrol for all State highways and roads throughout the County. (State funded.) 4. California State Police: Services all State-owned.park land. (State funded.) 5. California Department- of Fish and Game: Monitors the enforcement of all laws relating to wildlife. (State funded'.) - g. Fire Protection 1. Oroville Fire Department: Provides fire protection to the areas within the'City Limits•. There are 26 full-time paid personnel plus 30 volunteers and 1 secretary. Service is.currently adequate and the department maintains advanced planning.,in order to be prepared for future needs. Oroville.Fire Department maintains a Glass 4 rating by the insurance Service Office. (Fu'n,Jed. by City Council with general fund money.) 2. Butte County Fire Department./California Department of Forestry: Butte County contracts with the California Department of.Fo'restry to provide'fire protection. In the Oroville area .there are 20 paid personnel and 45 volunteers. 'Currently, the Butte County Fire Department provides adequate rural service. (State and County funded.) h. School Districts 1. Thermalito Union High School District: This district serves the majority of the airport planning area. The district has three - elementary schools, one of which (Poplar Avenue School) is located just outside of the airport planning area. 2. Oroville Union High School District (OUHSD): This.district serves the entire.planning area. There are two'h'igh schools and one co.nti'nuation school. The schools are•not'at capacity. 21 3. The Butte County School District maintains the special education program for the planning area. Mesa Vista School in Thermalito assists the children with speech and hearing.impairmen'ts. Sierra Del Oro in the downtown area assists children with physical and mental handicaps. i. Medical Facilities The Oroville Medical Center maintains a 24-hour emergency staff which is capable of treating the majority of cases it receives. Certain cases must be transported to Chico, where more specialized equipment is located. There is ample bed capacity -at the medical facilities in the near term. 5. Development Trends This section focuses on the recent development which has taken place;in the planning area, and within the entire Oroville area, and possible future trends. The amount and timing of recent development in Oroville, like most communities, has been a -response to both local events and larger -scale trends. The key local events in the past'20 years have been the construction of Oroville Dam•and the related storage, power, recreation and access project.. 'mis tremendOLIS public investment in the 1960's was accomplished by all kinds of residential construction, development of the Oro Dam Boulevard commercial area, new public buildings and many churches. The slump which followed in the late 1960's and early 1970's was reflected in high vacancy rates,,low housing costs, reduced business revenues and limited construction. Building permit data indicates that there were no more than 10 new housing units built per year,in the City between 1969 and 1974, with similarly unimpressive total's for commercial and industrial development. It was during this slow period that the last major General Flan revision was adopted in 1973, a fact reflected in the conservative findings.and proposals of that effort. However, as in many semi -rural areas, the rate of growth and development increased tremendously in the mid -1970's. Record City totals established'in 1979, and not exceeded since, include 280 new housing units, total construction value of almost $12,000,000 and 276 occupancy permits issued for businesses and apartments. The late 1970's construction peak was dominated by apartments and a wide variety of retail businesses, especially outlets of large chains. This area's substantial growth in that period reflected a nationwide trend of migration from large metropolitan areas to smaller communities with a slower pace, rural surroundings and outdoor recreational opportunities. Immigrants to this area included both retirees and families, frequently with substantial equities to invest and valuable expera,ence and skills to put to use. xa Development has been substantial in the past two years but has definitely tapered off from the 1979 peak. The continued inflation of financing costs -and energy costs has had several other effects on development. Residential sales units are becoming smaller and more energy efficient; evidence of this trend is shown by the numerous recent proposals for small, attached homes with no side yards.and jointly -owned open areas. Limited demand for wood products has in turn limited local employment, income and effective demand for housing and services. This effect is in addition to the effects of the migration slow -down caused by potential residents not being able to sell their existing.homes and move here. Although these trends may continue to -limit development, many proposals for new construction are in the works in this area. Over 1,000 residential lots or sales units have been approved by the City and await financing and development. Judging from recent applications'for City sponsorship of industrial development bonds, there are also many industrial and commercial projects ready to go if financing is available and affordable. Development plans which may greatly affect the future of'this area must also include the long ,list of public facilities and development assistance projects proposed'for funding by the City's Redevelopment Agency. The above plans for growth are more than programs to achieve the economic benefits'of growth. Such plans are a.clear recognition that the Oroville area has many prerequisites to growth and few constraints with the big city to small town,migration trend expected to continue in the 1960's, all types of development can be anticipated and the "filling in" of the vacant sites in the planning area will continue. The only real question is, "how fast?" Migration trends and growth pressures could be greatly modified by future events. Oroville's•growth would undoubtedly accelerate if there were significant. reductions in interest.rates. Short-term increases in, migration from the metropolitan areas to the south could also be induced by earthquakes or environmental problems in those areas or by large new industry here. Large increases in growth pressures could lead to a complete "build -out" of the proposed land use pattern in ten or fifteen years and the resulting need to completely revise this plan long before .that time. On the.other hand, economic factors could slow down future development enough to require only minor, plan changes during the next 20 year's All growth within the southern portion of Butte County will result in a'iditional use of the Oroville Airport for both sport flying and for business and commercial flights. 6. Housing Availability and Supply The number of households has increased consistent with the general population growth, although the trend toward fewer persons per family will cause households to inc=rease at a slightly'faster rate than the population. The fastest increase has been in the unincorporated area where developer activity is evident. 23 A detailed analysis of housing characteristics within the entire Oroville area is contained within -the Environmental Impact'Report prepared by Cook Associates for an Amendment to the Oroville General Plan by the City of Oroville in February 1983. Within'the airport planning area population density is quite low, ranging from 1- to over 300 -acre parcels, with the majority in the 10 - to 40 -acre range, except for the area to the northeast, along -the extension of Runway 1-19. This area is predominantly,1/4 to 1/2 -acre parcels, mobile home parks an6.some larger parcels that are of high potential for,development of single-family residences. The area is planned for low density residential use of up to:E'dwelling units per acre. Unmet needs: 1. Is there an adequate supply of sound housing units? 2. Are families overpaying for shelter? 3. Are families overcrowding to reduce housing costs? Of the three problem areas,, only overcrowding appears to be declining, due in part to the reduction in family size. Although enough.housing is being built to meet the supply problem, families must pay a disproportionate share of their income for what housing is available. NEW CONSTRUCTION NEEDS,.,1980-1986 Housing Housing 1/ Units Households Households Units 1979/80 1979/80 1985/86 1985/86 Planning 12,002 11,023 14,557. 15,284 Area 2/ Oroville 4,100 `3,751. 4,.337 4,554 1/ Includes.5% vacancy factor. 2/ City figures included in planning area totals. Recent construction trends in -the City indicate that the needed new housing units may be reached.by 1985. The current vacanc.y'rate in existing units is estimated by Pacific Gas and Electric CPG and E) to be near 5% based on a count of idle meters. Units under construction and new vacant units would not be include'd.in PG and'E's estimate. This could increase the factor to 6%. There is a need'to:.monitor potential. over -building in the unincorporated area. 7. Economic Trends The City's local economy is a reflection of the state and national economies. The housing and construction industry..has been depressed, unemployment is high, and public entities are experiencing a lack of revenue with which to carry out mandated programs. Retail sales are also falling. Several large industries have significantly reduced staffing levels and several commercial stores have closed. The City decided to take an active role in facilitating the expansion of industrial development and commercial construction by utilizing the City Charter power available to intervene in what is essentially a private market. Industrial Development Surplus vacant land within the airport boundary exceeds 200 acres. For the economic benefit of the City, the best use of this property is commercial light manufacturing. Transportation and circulation elements complement this location for light industry use as follows= 1.. Light industry is compatible with and complementary to normal airport development. 2. Good vehicular access to the airport from Oroville and its environs is provided ,by Oroville Dam Boulevard (State Route 162) which connects Highway 99E (4 miles to the west) to Highway 70 (2 miles to the east) . 3. A Union Pacific Railroad line is located 3-1/2 miles easterly of the airport via Oroville Dam Boulevard. Approximately 180 acres of surplus land is zoned for industrial sites. There are about 72 acres east of the easterly taxiway of Runway 12-30 available for industrial development. The triangular-shaped area between the runways is.zoned for commercial light manufacturing, and consists of approximately 95 acres. T,he need for this additional acreage is not -anticipated within 20 years. 8. Ar`chaeology/Histor Oroville was founded in 1848 as a gold mining camp named Ophir on the Feather River. As the entire Sierra foothills boomed with "gold fever," the camp grew until it was the fifth largest town in California in 1856. In,that year, the name was changed to Oroville, Spanish for "City of Gold," and the town became, the county seat of Butte County. As a result of the mining activity,, thousands of 'Chinese moved.to the area to provide labor and services. By 1880 Oroville hada Chinese population.'second only to San Francisco. Flooding and fire -all but eliminated the "Chinatown," and there are only scattered remnants of Oroville's Chinese heritage. Most of the remaining buildings are situated in'the downtown area adjacent to the existing Orovi.11e 2S historical area. Other•h,istorical sites inciude:the'Ishi.Monument, the Chinese Temple," the Chinese Cemetery, the Jewish Cemetery and a large number.of houses and buildings scattered throughout the Oroville urban area. The City does have ,a designated historical preser•✓ation:district and.a• historical and improvement area., The structures within_that.'area are. controlled by Resolution 3402 which requires all structures built, remodeled, rehabilitated or altered to conform to the -Turn,-,of the Century" theme." The Development. Review Board is 'in charge of overseeing this requirement. No known sites of archaeological or historical signif•icance'ar.e Located within the airport plan area., 26 V. ENVIRONMENTAL IMPACT OF THE PROPOSED ACTION A. General With regard to the Oroville Airport Land Use Plan it should be stressed that impacts associated with this project relate to the plan being designed to accommodate expected increases i.n air traffic at the Oroviile Airport. Direct impacts would include changes in land use policies necessary to implement the Airport Land Use Plan, and similar changes in codes or standards. Indirect impacts caused by implementation of the.Airport Land Use Plan could include those caused by increased use of the airport due to its being a more desirable air facility due to implementation of the plan (i.e., a safer airport with less encroachment from urban development in critic -al areas such as clear zones and approach zones). The Oroville Airport Land Use Flan represents a relatively narrow range of goals, objectives and policies which are intended to guide the orderly growth of the community contained within the airport planning area, to preserve navigable air space around the .:airport, to preserve the safety of people and property around the airp,Drt, and to mitigate impacts caused directly or indirectly by increased use of the airport. The policy statements that were developed to accomplish the above goals will have an effect on t_.he environment. However-, these policies have been thoroughly investigated as to their impact on the planning area. As a result of this review, it is felt that the proposed goals, objectives and policy statements, as contained in the Oroville Airport Land Use'Plan, are those that will best serve the Oroville community and the Oroville Airport. The adverse impacts that.may occur as a result of a.proposed policy have been mitigated as much as possible within the plan by developing policies that mollify the anticipated adverse impacts. For example, policies directing increased usage by business jets and other heavy aircraft to a particular, runway will be offset by policies calling for reduced densities or .no development in clear zones. In this plan, policies were developed to assure adequate noise'c_ontrnl and provision of adequate clear zones and approach zones to promote safety in aircraft operations. When the development of policies is not feasible or within the scope of the revised elements, mitigation measures have been identified wherever possible. B. Impacts and Mitigations 1. Geology/Seismicity Impact #1= All structures within the Oroville area are :subject to seismic activity. This activity has affected strructures in the past. Structural damage to emergency facilities is possible. 27 Mitigation #1: None. All buildings in the .airport planning area must. meet uniform building code requirements for seismically active areas. 2. Water Qualit Impact #2: Increased use of the airport may affect the,quality of water used for domestic purposes due to increased use of solvents, oils, etc.,, for maintenance, washdown, etc. Human encroachment into watershed areas impacts water quality by way of the following reduced percolation, increased surface water runoff, increased sedimentation, human use of water storage facilities and man-made pollution entering ground or surface water. Mitigation #2: Independent. disposal of liquid was.,tes by "wet" industries or aircraft maintenance operations using large quantities of water or toxic chemicals on airport lands should be required. Aircraft washdown facilities must be provided with drainage facilities that -will not permit pollutants to enter either ground or surface waters. 3. Vegetation Impact #3A: Vernal pools are Areas of Special Biological Importance (ASBI), as designated by the State Department of Fish and Game. Residential and industrial developments north, west and south of the Oroville'Airport have the potential to destroy existing pools. Mitigation #3A: The areas containing vernal pools which are adjacent to the Forebay and located in the Oroville Wildlife Area have been designated as Grazing and Open Land and/or agricultural -residential in order to limit the amount and types of development. The industrial area adjacent to the Oroville Airport and the Oroville Wildlife Area will be zoned L -I, Limited Industrial. The L -I zone restricts the amount and types of uses allowed, and subjects all new construction and major remodel projects to a development impact review. Drainage facilities will be required to meet state and,local guidelines. .Impact #3B:• Residential development adjacent. to 'the Afterbay may affect its use by wildlife. Mitigation #3B: One -acre minimums in conjunction with health requirements for septic systems mid -on-site wastewater disposal will significantly limit the amount of residential development..that may occur and is therefore semi -self-limiting. 28 4. Air ©ualit Impact #4: Increased aircraft operations, automobile traffic generated by aircraft users accessing the airport, and increased industrial uses at the airport will increase the potential for increased air pollution at the airport.. Mitigation #4: None.' Automobile emissions will be controlled, by the state emission control standards. Developmefit on airport'lands will be required to adhere to the Butte County Non -Attainment Plan and -to meet, the requirements of the Butte County.Air Quality Control Board.` Potential increases in aircraft emissions are not expected to be significant because of the relatively small amount of time actually operated within the airport planning area, and:th'e altitude at which most emissions occur. 5. Land Use Impact#5: Airport clear zones have been designated pursuant to Federal Aviation Agency Guidelines. Most of the clear z-ones.are under private ownership. The designation effectively minimizes the allowable uses of the property in order to preserve the public health and safety. In the same instance, the designation clearly reduces the value of the property to the current owner if the public health and safety are disregarded. Mitigation #5: The City should immediately acquire easements or title to the clear zone sites. The Federal Aviation'Administration will assist in the funding and acquisition of clear.zone areas. 6. Noise Impact #6: The proposed extension of the brovil.le Airpor-t runway, which may be necessary to accommodate commercial air traffic will also, increase noise in residential areas located within proximity to the runways'. Increased intensity of use of the airport will also contribute to an increase in noise. Mitigation #6: The impacts created.,by noise -producing uses may be limited through the enforcement of the City's noise ordinance.. It is recommended that the City review the existing noise ordinance in order to ensure adequate mitigation of aircraft -related noise is accomplished. Similarly, the County of Butte should adopt a noire oi-dinance implementing the Noise Element of the Butte County General Plan. The ordinances should contain noise attenuation standards for all occupied buildings, especially residential buildings. 29 7. Circulation Impact #7: The impact on circulation will be significant due to the expected increase in industrial/commercial development of the airport property'. Development adjacent to the Oroville Municipal Airport may adversely affect future airport flight operations. Also, the extension of runways and the expansion of airport services may affect the health and safety of future area residents. Mitigation #7: The industrial -related sites adjacent to the airport should have zoning designations which limit the types of allowable industrial uses to those that are compatible with airport uses. The residential area located northeast of the airport is already partially developed. Any further development should.be carefully reviewed as to the impact that airport operations will have on health and safety, with proper mitigation measures imposed. The rural residential area southwest of.the airport has been subdivided into 10 to 40 -acre parcels.. Attempts are being"made to further subdivide these parcels. Since these parcels have not yet been developed, the City and County should prepare definitive development criteria as a part of the proposed airport environs plan.in accordance with state and federal regulations. It is essential that the City coordinate efforts with responsible County and State agencies. B. Public and Quasi -Public Services Power Impact #8A:.' Construction of a hydroelectric generation plant by the State "Department of Water Resources has been abandoned. The power plant would have been located on the Thermalito Afterbay outlet, southwest of the airport The proposed project included 34.5kv electric transmission lines to be located within 4,500 feet of the runways.. Although the State"has abandoned the project, the site is available for other agencies or'private firms to construct a similar power plant. Mitip,ation.#8A: The site should be monitored by the City and County to assure that such construction and location of transmission lines do not have a detrimental effect on airport operations and development. Impact #8B: There is an existing above -ground power/utility line located along the east -west access road in the Afterba.y Estates subdivision south of the airport and in line with Runway 1-19. If that runway is. extended to the south as planned, the:p,ower line will be within the.FAA Part 77 clear zone. 30 Mitigation #8B= At the time of issuance o -f building ,permits for building using said utilities, the County and/or City should require, the utilities to be placedun'derground. 9. Development Trends Impact #9: Development,(especially residential) has slowed - significantly since its peak in 1971;;but,is beginning to increase again. Potential development pressures exist in `T'hermalito and to the south in Afterbay Estates. Mitigation T#99: Require avigation easements -.to be'granted to the Oroyille Airport -by all new development within the Oroville.,.Airport plan area and. within the 55,dB CNEL noise,areas. The avigation easements. should address all potential impacts to a•i'r'traffic including noise., vibrati'on,.fumes', dust, fuel par,ticles,.electric,al interference, height limitations, light sources, and reflective surfaces. 31 VI. ADVERSE ENVIRONMENTAL IMPACTS WHICH CANNOT BE AVOIDED The proposed project will result•in several significant adverse impacts,• many of -which will be 'reduced "by,plan-policies, implementation measures and/or mitigation -measures.. The projected growth within the planning area is such that total mitigation of adverse 'impacts, -is notfeasible. The unavoidable impacts•,of the proppsed•project are summarized as'. follows: There will be an increase in the amount and"velocity of'water runoff which will increase erosion and sedimentation. There mayy be long-term degradation of surface and groundwater quality. ,There will be an increase in noise. -levels due to increased vehicular movement,'airport use and industrial development. There will be an increased demand for public facilities and services.' The current charac.t.eristics'of the 0roville life style may undergo change*as a result .of increased use`of the airport. Incre'a'sed use of all ru,nways may degrade "the quality of habitats in the wildlife .area to the southeast of the airport -land the Afterbay' to the southwest. 32 VII. ALTERNATIVES TO THE PROPOSED ACTION A. No Project-, As required by state law, the "no project" alternative must be considered. Adoption of this alternative would leave the airport with no Land Use Plan. Public Utility Code Section 21.675 requires City and County General Plans to be.consistent with the Airport Land Use Plan. Furthermore, no zoning ordinance or building regulation, General.Plan or Specific Plan within the planning boundary can be adopted without first being referred to the Airport Land Use Commission to determine consistency with the Airport Land Use Plan. If no Plan has been adopted, no finding of consistency can be made. B. Modification of Proposed Plan; Runway Length The plan as proposed provides for the extension of Runway 1-19 from 5925 ft. to approximately 7025.ft. This extension would place the.FAA Part 77 clear.zone over all or part of 12 lots of the Afterbay Estates subdivision; severely limiting usable area on 8 of them. If the provisions for the runway extension are eliminated, then only 7 lots are affected, and only 5 severely. These figures are based -on retaining clear zones specified for precision approaches. Other advantages of this alternative are. that the runway threshold,would not be moved closer to the hilltop to the southwest thereby increasing the vertical clearance from the bottom of the approach surface to ground level from approximately 5 to 25 feet (depending on final runway elevation) to approximately over 40 feet. Also, if the runway extension is to be of the same gradient as the rest of -the runway, an earth fill approximately 20 .feet high will be required. Such extensive grad-ing could have significant effects on erosion, drainage characteristics and aircraft safety. Disadvantages of this alternative are that Runway 1-19 would remain 5925 ft. long, which could 'limit future use by larger commercial aircraft. C. Modification of Proposed Plan; Type of Approach The plan proposal calls 'for a precision -instrument approach on the southwest end of Runway 1-19. The clear zone for precision approach is somewhat wider than that for a non -precision approach clear zone and 800 ft. longer. If a non -precision approach were specified, then 10 .lots, of the Afterbay Estates subdivision would be affected, 6 severely, instead of 12 and 8, as discussed in Alternative B, above. If a non=precision approach clear zone is specified for the existing. runway (deleting -the provisions for runway extension as.in Alternative -B), then the number of lots affected drops to 3, with only 1 severely limited. It should be noted that under this alternative, none of the affected lots would be 33 VIII. SHORT TERM USES VERSUS LONG TERM PRODU.CTIVITY The adoption'of the Oroville Airport Land Use Plan and th'e implementation of the plan by the- -City of Orovill-e and Butte.County through General Plan revisions and the adoption of appropriate zoning.. will result in a small reduction -of the amount of land.planned for industrial and rural residential uses. The affected areas are those located.in.the clear zones. In contrast, the Airport Land Use Plan is intended to protect the., airport from incompatible surrounding uses and to promote the provision of improved 'services and facilities at the airport. A well -protected airport providing services and•facilitd es better than those now available will stimulate commercial and industrial.growth in'the area .and, as,a result, residential growth will increase. IX. GROWTH-INDUCING,IMPACTS OF THE PROPOSED ACTION The adoption of the Oroville Airport Land Use Plan will foster growth in a number of ways. Encouraging the growth and development of industrial and commercial areas by providing an adequate, desirable airport will facilitate increased residential development within the entire area by generating increased need. Limiting residential densities in areas subject to high noise levels, thereby assuring tha;t residential -units are located -in a good. environment, may attract additional populations. The provision of an efficient and safe airport for sport flying will add to the area's attractiveness. The proposed Airport Land Use Plan was not designed specifically to encourage growth in the Oroville area, but to provide adequately for anticipated increases in airport. activities. Providing for expected increases will encourage additional commercial.and industrial activity. Jobs created, by such additions will attract additi.onal,population, which will in ,turn add to the use of ,the 'airport. Cumulati'vely,,provision of a safe, well-planned airport will be ..growth -inducing. 36 X. ORGANIZATIONS; AGENCIES', DOCUMENTS AND PERSONS CONTACTED City of Orov.ille, Public Works.Department, April -May, 1986. City of Oroville, General Plan Revision, February 1983 Butte County, General Plan Land Use Element, revised March 1984 Airport Land Use Planning Handbook, Department of Transportation, July 1983 Department of Transportation, Aeronautics Division, May -June 1985 City of Orovi.11e,,General Plan Update for the Oroville Municipal Airport, preliminary draft, March 1985 City of Oroville, General Plan..for the Oroville Airport, -June 1973 U.S. Department of Transportation, Airport Land."Use Compatibility. Planning, AC 150/5050-6,_1977 Butte County General Plan, Noise .Element, March 1977 United States Census, Bureau, Census Data 1960, 1970; 1980 State of California, Department of Finance, population projection State of California, Department of Finance,.populatibn estimates County of Butte, Special Census, 1975 County of Butte, 1985-2000: Population, Employment, Land Use Report,' March 1982 Butte County General Plan, Circulation Element, 1984 State of California, Department of Fish and Game,'Bob Mapes, .March 1985 State of California, Department of Parks and Recreation, Hal Bradshaw, March 1985 Butte County Zoning Maps, 1985 City of Oroville Zoning Map;"1985 State of California, Government Code, Division 6.f.:: Aeronautics, Subchapten.6, Noise Standards, 1979 "37 PLUMAS NATIONAL B+xAs FOREST bLake ya x ' MENDOCINO PorOd%Sem 00`6 R• MiO. I - NATIONAL "•• 7b i iea'he � o FOREST &ne Block Chico i Res. Oroville Res. Fa. Reno OROVILLE . rherfm1do 3 Yuba ( Allerbay Collins(r - 0 Lake (� Uk%oh Vubo Marysville Corson city • o Gly Auburn Clear '. Res. ELGI�RA00 Lake NATIONAL 113 FOREST ' Lake ' Sonoma - - �Fo/som Late ; ,p 10Lake Woodlond ' . .. 6erryessa I� SOCromenlo Sonlo ROSO o Vocoville _ �00 5 Son Rbloel YOSEMITE Berke/e $/pCklOn NATIONAL PARK Ook /ond Son ' . 17 Fr onC%sCo Hoyword Son Molex F4t • 4 �71a 7e MIT .gCrglE rror7j-`* ycDD 01NA� ar^ • ♦rte• . y • TNEFYAJ:1T0 - FORfBar NOR 7N r T NE $ N S AV ` li ' ,aK "• Av /HEN.vaLnD �OFEBar � ro sous" AMA' 4 N �aC.owtR: ;• N ,.AVENUE ♦r.l d Q yr%r 'r u�^ t�'v; ai 0. AVENUE r .. .( . ��• V x qy - `y,mr�.n `�{���t'S4r�i�R�L.�� � •. .W _ . i= l'`� �� : 7 +A s �i ?1' d 7 iw,J7 � 'e•r NLJU a C, 'x 4VE NUEvi of 0 OVILL DAN .BDULE VAR OR VI WEST try LLE DAM BOULEVARD* ' Is Am t J V fy S M DDDfig} r' �7i lu Ilk- �^���h�v' Anl y 7 .. \ Sl SIERRA SANDY SOURCE U.S. DEPARTMENT OF AGRICULTUF(E SOILS REPORT SERIES 1926. Ac AIKEN CLAY LOAM LEGEND AC ANITA CLAY ADOBE Tg TUSCAN GRAVVELLYO CLAY LOAM CV COLUMBIA VERY FINE SANDY LOAM Wg WYMAN GRAVELLY LOAM Cg :OkNING GRAVELLY SANDY LOAM Wl WYMAN LOAM J _!�•\ . 1`� .� �' _ HS ••lONCUT SANDY LOAM Pd PLACER DIGGINGS /�1�_-_y-rt HI HONCUT LOAM Sc SCABLAND I —'—' ---------- `•' 4 KI KIMBALL LOAM T TAILINGS J l I - Rg REDOING GRAVELLY SANDY LOAM Rb ROUGH BROKEN AND STONY •/ \` Rf ROCKL I N FINE SANDY LOAM LAND ----------- Acl .2j Tg Cg ZJ Sc �17 Ac Rb Rb Rg Rb Rbc' ^.►' I :" \ %, ,'l� Rb J O �!... yam; �.�� cg ac v ,l - s sc t, R9 Rb . f Rb Rg I, ��• �' i l�; •� J t - _ . ��:f.-• •-rte---�`.i •a_s , _ _�o1' � � .,,..:_ - _ , �... �:: _ � l r Rb '77Ad ; Aj Ap Rf Wg sl Rgr� T �C H I t e _Rb 9 t _ �. If f �- �i �-•..^ /fie. csl . =ri Cg !' 1. I, , 1 I ,: � � { ,� / I If .' � 1 .►�.- � Rf Ac .` .� T f j /i ;- -- �� t1 „ • ��,� '' = 1. �! ,fir �- -- � `�,.. rl 1--4 • _�� r�„�`'� Com-` � � �'� 91 Rg tcv �� - II Kt (/� , j I R ^✓ / Rb `Rb -/Pd ORO 6//.9L/JE 411fpolfrZ, .9 417 Pt�9lI!I/nG DEPT. -MALE Appendix 4 CNEL Contour Worksheet Takeoff X or Airport Oroville Flight Track 01 Landing X Date 5 ll 83 Aircraft Type Number of Flights(1) :EWeighted (2) Equivalent (3) Aircraft Factor Weighted Total (4) Equivalent Flights Day Eve. Night Jet 2 -Eng. Turbofan (DC -9, 737) 3 -Eng. Wide Body (L-1011, DC-10) Business Jet ND NE NN N FT .or F' NT or NL 0.8 1 ,0.2 0 0 0 1.4 1.0 1.0 _- 1/3 1.0 - 1/10 1.4. -- -- 0.35 1.4 -- - -- --.. 0.1 Business Jet 1 Falcon Total Equivalent Jet Aircraft (J) 1.7 1.5 Propel ler (Total Engine Horsepower) _— < 200 HP (as st me d) - - - - 50 50.. r 200-500 HP -- 500-2000 HP _---------=— - > 2000 H P - --- -- — ' 3 -Turboprops - Totol Equivalent Propeller Aircraft (P) 50 50 Total Equivalent Flights (J + P) _ -51 ._ 7'..--- 51 �5 _— Percent -Jet Flights 100xJ/(J + P) 3.3% 2.9% CNEL Closure Distance, ft(5) 65 6400 3600 70 Notes-' (1) Day = 7 AM-7PM; Evening 7 PM -10 PM; Night == 10 PM-7AM (2)•W.eighle' d number N = ND + 3 NE + 10 NN (3) ,See. Table 1 for FT or FL for jet aircraft and Table 2 for pr''6" Her aircraft (4).NT.= FT,times N (or. FT x N). Similarly, NL ='F -L x N (5) For closure distances, see Figure 2 for takeoff flight's 'and .Fi'gure' 3 for landing flights. (Use Tab le•.3 for.zero jet operations) CNEL Contour Worksheet Takeoff X or Airport Oroville Flight Track lg Landing X Dated/11-a 3 Number of Flights(] Weighted Equivalent Weighted Total Aircraft Type Day Eve. Night Total(2) Aircraft Factor(3) Equivalent Flights ( ) Jet ND NE NN N FT or FL NT or NL . 2 -Eng. Turbofan 3.2 0.8 0 5.6 1.0- 1.0 5.6 5.6 (DC -9, 737) 3 -Eng.. Wide Body (L-1011, DC-10) l -- --- —...1 ---- ----------..- --- - Business Jet--- -- - --_ Notes (1) Day = :7 AM-7PM; Evening = 7 PM -10 PM; N fight = 10 PM -7 AM (2) We' ighted number N = ND + 3 NE + 10 NN (3) -See Table 1 for FT or FL for jet aircraft and Table 2 for propeller aircraft (4). -NT = FT times N (or FT x N). Similarly, NL = FL x N (5) For closure distances, see Figure 2 for takeoff flights and- Figure. 3 for landing flights. (Use Table 3 for. zero jet operations) ---- --- 1.0 - _'---_ 0 0 1.0 Business Jet 1 Falcon Total Equivalent Jet Aircraft (J) 5.93 S. 7 Propeller (Total Engine Horsepower) < 200 H P 200-500 -H-P-3 4-2 500-2000 H P > 2000 H P 190 1.0' : 1. 0_____1SQ_— 109 27 0 jl-- - - Total Equivalent Propeller Aircraft (P) 190 Total Equivalent Flights- - -- (J + P) _ _ _ 19 S.. 93 Percent Jet Flights 100xJ/(J + P) 3.00- CNEL Closure Distance, ft(5) 190 .1�.5�,._7.__ 2.9% 65 7900 7000 70 Notes (1) Day = :7 AM-7PM; Evening = 7 PM -10 PM; N fight = 10 PM -7 AM (2) We' ighted number N = ND + 3 NE + 10 NN (3) -See Table 1 for FT or FL for jet aircraft and Table 2 for propeller aircraft (4). -NT = FT times N (or FT x N). Similarly, NL = FL x N (5) For closure distances, see Figure 2 for takeoff flights and- Figure. 3 for landing flights. (Use Table 3 for. zero jet operations) CNEL Contour Worksheet Takeoff X or AirportOroville Flight Track 30/12 _Landing X Date S/1118 3 Aircraft Type Number of Flights(l) Weighted Equivalent Weighted Total (4) Day Eve. Night Total(2) Aircraft Factor(3) Equivalent Flights Jet ND NE NN N FT or FL NT oe NL 2 -Eng. Turbofan (DC -9 737) ----. —_--------- - _ - ---- 3 -.Eng. Wide Body (L-1011, DC-10) -- ---- — - - --- --- -- Business Jet -- -- - --. --_ Business Jet -- ----------- ---- . 134 H 1S90 Total Equivalent Jet Aircraft (J) Propeller (Total Engine Horsepower) 90% 8% 2% < 200 H P - 90 8 2 134 1.0 1.0 134 200-500 .H P -- - _ 50(Y -2060 -HP— > 2000 H P Total Equivalent Propeller Aircraft (P) __— ___ — 134 Total Equivalent Flights (J + P)' 134 Percent Jet Flights 100xJAJ + P) 0 .. ' CNEL Closure Distance, ft(5) 65 2720 70 Notes (1) Day = 7 qM-7PM; Evening .= 7 PM -10 PM; N ight = 10 PM -7 AM (2)' Weighted number N = ND + 3 NE + 10 NN (3) See Table 1 for FT or FL for jet aircraft and Table 2 for propeller aircraft (4) NT =•.FT times N (or FT x N). Similarly, NL,= FL x N (5):For closure distances, see Figure 2 for takeoff flights and Figure 3 for landing flights. ..,,(Use Table -3 for zero jet operations) 134 H 1S90 APPENDIX 5 COUNTY OF BUTTF. ENVIRONMENTAL CHECKLIST FORM (to be completed by lead Agency)' ile 85-40 og 85-02-01-03 I. BACKGROUND All Various 1. Name of proponent �Oroville Airport LandLse_Plan 2. Address of proponent and representative (if applicable) Butte County Airport Land Use Commission 7 County Center Drive Oroville , CA,959615---- - 3. Project description ____The Orpvil le_Aixport_Enyirans II. MANDATORY FINDINGS OF SIGNIFICANCE YES MAYBE NO a. Does the.project have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self. - sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major: periods of California history or prehistory? b. Does the project have the potential to achieve short-term benefits to the detriment of .long-term, environmental goals? (A short. -term impact on the environment is one which occurs in a relatively brief period of time while long-term impacts"Wil.l endure into the future.) C. Does the project have impacts which are individu ally limited, but cumulatively considerable? (A project may impact on two or more separate resources, where the impact on each resource is relatively small, but where the effect of the total of those impacts on the environment is significant.) _ d, hoes the project have environmental effects which. .-will Cause suhstantial adverse effects on human beings, either directly or indirectly? Ill. DETERMINATION (To he completed by the Lead Agency) On the basis of This initial evaluation: 1/WE find the proposed project COULD NOT haff:a significant effect on the environment, and a Ni?GATiVE DECLARATiON will be prepared. '�I/WE find that although the.proposed project could have a signifi- cant effect on the environment, there will not be a significant • effect in this case because the MITiGATiON MEASURES described on the attached sheet have been added yo the project. A NEGATIVE DECL.ARAT I ON w i l l he prepared. 1/WE find the proposed project MAY have a significant.effect on the environment, and an ENViRONMENTAL IMPACT'REPORT is required. DATE: Februar_ 27,_1985 COUNTY OF BU`'TE, PLANNING DEPARTMENT David R. Hironimus Associate Planner Reviewed by: 0 ' IV. ENVIRONMENTAL IMPACTS_ (Explanations of a "yes" and "maybe" answers are required on attached sheet(s)) YES MAYBE NO 1. EARTH. Will the proposal result in significant: instable earth conditions or in changes in geologic substructures? b. Disruptions, displacements, compaction or overcovering of the soil? X C. Change in topography or ground 'surface relief features? X G d. Destruction, covering or modification of any unique geologic or physical features? x e. Increase in wind or water erosion of soils, either on or off-site? k f. Changes in deposition or erosion of beach. sands, or changes in siltation, deposition or erosicn which may modify the channel of a river or stream or the bed of the ocean or i< any bay, inlet or lake? g. Loss of prime agriculturally productive soils outside designated urban areas? X h. Exposure of people or property to geologic hazards such as earthquakes, landslides, mud - Slides, ground failure or similar hazards? X G 2. AIR. Will the proposal result in substantial: a. Air emissions or deterioration of ambient air quality? iC b. The creation of objectionable odors, smoke or fumes? x c. Alteration of air movement, moisture, or temperature, or any change in climate, locally or regionally? X 3. WATER. Will the proposal result in substantial: a. Changes in currents, or the course or direction of water movements in either X marine or fresh waters? b. Changes in absorption rates, drainage patterns, or the rate and amount of surface runoff? X C. Need for off-site surface drainage improve- me:nts, including vegetation removal, channel- ization or culvert installatibn? X d.. Alterations to the course or flow of flood waters? �C e. Change in the amount of surface water in 'any water body? f. Discharge into surface waters, or in any: alteration of surface water quality, including but not limited to temperature, dissolved ozygen or turbidity? g. Alteration of the direction or rate of flow of ground waters? h. Change in the quantity of ground waters, either through direct additions or with- drawals,.or through interception of an .. aquifer.•by cuts or excavations? iC i. Reduction in the amount of water otherwise available 'for public water supplies? j. Exposure of people or property to water' related hazards.such as flooding? -2- YES MAYBE NO 4. PLANT LIFE. Will the proposal result in substantial: T_. Change in the diversity of species, or number of any species of plants (including trees, shrubs, grass, crops, and aquatic plants)? b. Reduction of the numbers of any unique,,.rare or endangered species of plants? c: Introduction of new species of plants into an area, or in a barrier to the normal replenish- ment of existing species? d. Reduction in acreage of any agricultural crop? S. ANIMAL LIFE. Will the .proposal result in substantial: a:. Change in the diversity of species, or numbers of any species of animals (birds, land animals including reptiles, fish and shell fish;, benthic organisms or insects)? b. Reduction in the numb.ers of any unique,.rare or,endangered species of animals? c.' Introduction of new species of animals into an area, or result in a barrier to the migration or movement of animals? d. ,Deterioration to existing fish or wildlife habitat? 6. NOISE. Will the proposal result in substantial: a.- Increases in existing noise levels?. b. Exposure of people to severe noise levels? 7. LIGHT AND GLARE. Will the proposal produce signi icant light and glare? 8. LAND USE. Will the proposal result.in a suFbstantial alteration of the present or planned land use of an area? 9. NATURAL RESOURCES: Will the proposal result in su stantial: a. Increase in the rate of .use of any natural resources? %< b. Depletion of any non-renewable natural resources? 10. RISK OF UPSET. Will the proposal involve: a. A risk o explosion or the release of hazard- ous substances (including, but not limited to, oil, pesticides, chemicals or radiation.) in the event of an accident or upset conditions"? x b.. 'Possible interference with an emergency :response plan or emergency evacuation plan? 11. POPULATION. Will the.proposal alter the location,. ... distrii ution, density, or growth rate of the.human x, population? .12. HOUSING. Will the proposal affect existing housing, or create a demand for additional housing? X -3- 17 HUMAN HEALTH. Will the proposal result in: a. Creation of any health hazard or potential health hazard (excluding mental health)?' b;:. Exposure of people to potential health hazards? 18. AESTHETICS. Will the proposal result in the 'Obstructionof any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically offensive site open tq.public view? -4- X YES MAYBE NO 13. TRANSPORTATION/CIRCULATION. Will the proposal result:an:..: . a. Generation of substantial additional vehicle movement? b. Effects on existing parking facilities, or demand for new parking? C. Substantial impact on existing transportation systems? d. Significant alterations to present patterns :of circulation or movement of people,and/or X goods? e. Alterations to waterborne, rail or air traffic? X f.. Increase in traffic hazards to motor vehicles, bicyclists or pedestrians? i< PUBLIC SERVICES. Will the proposal have an effect _14. upon,. or result in a need for new or altered governmental services: a. Fire protection? b. Police protection? k c. 'School•s?' d.. Parks b'r other recreational facilities? e. Maintenance of public facilities, including roads? X f. Other governmental services? i1 15. ENERGY. Will the proposal result in: a. 9se of substantial amounts of fuel -or energy? b. Substantial increase in demand upon existing sources of energy, or require the development of new sources of energy? X 16. UTILITIES. Will the propsal result in a need for new systems, or substantial alterations to the following: Ii. Power or natural gas? X b:. Communications systems? c. Water. availability: d.. Sewer' o:r..se•ptic tank? X e. Storm..water drainage? k f. Solid -waste and disposal? )c 17 HUMAN HEALTH. Will the proposal result in: a. Creation of any health hazard or potential health hazard (excluding mental health)?' b;:. Exposure of people to potential health hazards? 18. AESTHETICS. Will the proposal result in the 'Obstructionof any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically offensive site open tq.public view? -4- X . YES MAYBE NO 19. RECREATION. Will the proposal result in an impact upon the quality or quantity of existing recreational opportunities? X. 20. CULTURAL RESOURCES. a. Willi a proposal result'in the alteration of. o'r .'the :destruction of a prehistoric or, historic archaeological site? b. Will the.proposal resul.t in adverse physcal or aesthetic effects to a prehistoric or historic building, structure or object? X c. Does the.proposal have the potential to cause a physical change which would affect unique ethnic cultural values? d. .Will the proposal restrict existing religious or sacred uses within the'pot'ential impact area?. V. DISCUSSION OF ENVIRONMENTAL EVALUATION .File # 85-40 See attachment: DISCUSSIDN _EVALUATIDN File # 85-40 This project isthe formulation and eventual adoptio.n of the Oroville Airport Ahea Land Use Plan pursuant to Public Utility Code Sections 21674 through 21675. The proposed plan establishes planning boundaries around the Oroville Airport area of influence and sets forth appropriate land use including building height restrictions to the extent that such land is not already devoted to incompatible uses. While this plan may be reviewed and modified more often, the noise contours set forth in Exhibit 1 or as projected for airport useage projected to the year 2000. The Oroville Airport has been in existence for many years, and adoption of this plan will have very few, if any, direct impacts on ` thwenvironment. The following items discussed in the checklist deal primarily with the plan as it relates to increased air traffic over the years and airport improvements necessary to handle that traffic. lb,c:- The plan under considdration provides for increased commercial ain traffic intlqding small jet operations'on Runway 01 (the runway running from northeast to southwest). Increased use of this runway by Omer, heavibk kirceaft may require extension of the runway to,the southwest. The clear zone plannedwithin this document assumes this runway extension. The runway extension will resul,t in considerable grading, le,bling, paving and other overcovering of the soils. Any impacts associated with such a project would be addressed at the time of the review of that specific project. 2a,b: This plan provides for the increase in use of the airport by ' heavi4r aircraft including multi engine and jets. Use of the airport by such aircraft will increase emissions which will deteriorate air quality in the area and be objectionable due to reasons of MY and aesthetics! 4d: If implemented, this plan will provide for the conversion of some agricultural land into urban uses. These changes are already provided for in the existing General Plan adopted by both the City of Oroville and the County of Butte. ' ' ' 6a,b: Increasedaircrafic traffic provided for by this plan will increase existing noide levels and expose people and existing homes to increased levels which may be severe on occasion. 7: A small amount of additional light and glare may be produced due to increased night operations of aircraft utilizing the airport. Appendix -F - Page 6 ~ ~ ^ File 4 85-40 8: At the present time, the Butte County General Plan provides for Low I)ensity Residential uses at the south end of the airport (up to 4 dwelling units per acre). If implemented, this plan will reduce those densities to 5 to 10 acres per dwelling unit. The north end of the runways of the Oroville Airport is presently planned for Low Density Residential uses. The City of Oroville indicates a ciear zone area and an industrial area in the same location. The land in question is currently within the City limits of Oroville. Adoption of this plan will require similar changes in the Butte County General Plan to show clear zone areas and designations reducing the density of human population within these areas' 10a: Theincreased air traffic provided for by this plan will result in a similar increase in risk of release of hazardous substances in the case of aircraft accidents. The plan requires adoption of clear zones which should provide for adequate safety areas in case of. accident. 11: See item 8. N 12:, Increase air traffic, as provided for by the plan, will effect existing housing in the area of high imAct areas. 13a: The plan provides for increased air traffic to tke Oroville . Airport. This would in turn result in increased vehicular traffic accessing*the airort. 13c; The plan provides for expansion of the existing airport. 13e: Increased air traffic utilizing the Oroville Airport may be required to alter traffic patterns in the area as development on the ground and air traffic become increasingly incompatible. 13f: Increased air traffic on Runway 12 may effect vehicular traffic on State Highway 162 where it crosses through the clear zone area just north of the airport. Because of a displaced -threshold this should not be a significant factor. 14a,b: ` Increased utilization of,the airport may require additional fire and �polic�-protection. ' ` ' � 14d; The Orpville Pageant Riders Rodeo grounds is'located on Oroville Airport property. Increased utilization of the airport may require new facilities which may eventually disrupt or displace the rodeo � facilities. 14e,f: Increased vehicular traffic accessing the airport may require ' additional maintenance of public facilities including the airport buildings themselves and road and parking facilities,associated with them. Other governmental services including water and sewer services MAY also requireadditional maintenance or capacity. � -Appendix F - Page 7 •, , Fi # 85-40 r , 1..��:a.: IncrPased use of t•.I-ie airpo&t wa:l.1 resc_cit in an increased use of fuel or energy during •f l.:i. ght::" caper _?.ti. ons and vehicular travel •tci and ; from the airport. 16a,be At the. presernt. time, no power- or coMmunicati.on'far.ilities are Incated abovegrdund within the required clear zone. However, :if the sout:.hwe`ster'ly extension of. Runway 01 7 1q ,i& accbnit?l.:i_ sed, the clear zone will.• i ncl c_cde in a e.a where existing gwer 1 i•n5s" _Lnd phone lines are located above:.grou:nd. Extension of that c=lear wc•nelwibul.d4equire - the undergrocanding A t_hose.utili•tles„ riucl-1,undpr_gcoundinq _,hoc.ldbe accomplished as soon as pr ac::t:i. cal is the ex i. e>t i ng' vac:: •_int " l of s are built upon. 19: See item 14d . „ Df:Vie 1 Vit - 1 Appendix F - Page 8• " 1 , Applicant: Butte County Airport' Assessor'? Parcel #t Land Use Flan Ua.r":ictu_s Fi :l e # 85-40 DATA SHEET A. F'roj"cct Doscrpaon 1. Type of Pru_ipa•t:•: Adoption c:t.f Airport. Land Use Plan 2. 'Brief Description: The Oroville Airport EnQi.rons . Location: Al. l.. that property l ocat.ed . wi th.i n 1-to12 miles of the' Orov:i. l l e Airport. Centered on the a.i rport , . 1 o&ated Approximately 3 miles west of Highway y 7 0, on the south side of Oro Dam Blvd. West. (State Highway 1621. 4. Proposed I)ensi. ty of Development: N/A 5; Amoc_tnt of Impervious Surfacing: N/A 6. Access and.Nearest Public Road(s): St:.ate "F:•lIghway 16 7. t=1Kthod �of Sewage Disposal: N/A 8. SouKce of -Walpr Supply: N/A c " . � . Proximity of Power ,..-lnes: in t_ h e area , 10. Potential for further l a.nd divisions and developments N/A B. f_=ny.ronmentalSetting Etysi cal ......C-lj_Y?..r-��nm'r...00, 1. Terrain a.- General Topographic Character: : Area, within the-'Pl anni ng boundary c.,eperal. l y flat valley land wii_h"some rolling ' hills and some: dredger tailings; b. Slopes: 0-10% C. Elevation: A4:rR ox i meat:: e:l. y 100 feet. ASL.. to l 'feet ASL .20b d. Limiting Actors: None 2 So Is , a. Types "`and (�tic?.r cir'ter'is'tic : . Generally l••'.er_`ding and Rockl::in foams, unc:er":L'.a.in by cobbles And play deposks. Poor percolation rates, limited a6ricultura:l .u_:e. b. ' L_i.mitir q .F :a.c:_tors: N/A Appendix F (a) ' ' . File # 85-40 3. `Natural'Hazards of the Land a. Earthquaki'ZIOne: Moderate EarthquakeIntensity Zone'VIII b. Erosion Potential� None to Moderate c Landslid Potential: �one ^ e^ ^ d. 'Fire Hazard: Unclassified and Moderate � e,� Expansive^Soil Potential:` Generally high 4. �iydrology � _ a. Surface'Wat6ri Thermalito Afterbay, portions of the Feather River, Thermalito Forebay Power Canal, and miscellaneous dredger ponds within the.8roville Wildlife Area. b. Ground Water: Generally high groundwater due to the . Thermalito Forebay and the ThermalitoAfterbay and the 4rea around the Oroville Wildlife Area and Feather River. c. Drainage Characteristics: Area generally drains to the 'Feather River to the southeast and the Afterbay to the ` southwest. d. Annual Rainfall -(normal): 20 to 26 inches per year ` e. Limiting Factors: None 5. Visual/Scenic Quality: Variable, generally good 6. Acoustic Quafity: Generally good except near traffic ' corridors -and the airport itself as well as under approach and departure zones. 7. Air Quality: Generally good except during times of agricultural burning ` S. yegetation: Native grasses, oaks, riparian vegetation near � Feather River and the Oroville Wildlife Area: 9. Wildlife Habitat: Small birds and animals common to the valley': areas. Waterfowl associated with the Forebay, Afterbay and wildlife areas. . , � 10. Archaeological and Historical Resources in the area: N/A 11. Butte County General Plan designation: Public, Commerc.ial, ` Low Density Residential and Agricultural-ResidentiaL, also 'Medium Density Residential 12. Existing Zoning: A-2, A -R, P -Q, C-1, C-2, R73, and R -C, AR -5 and assorted -City of Oroville zoning designations. 13. Existing Land Use on-site: Varied ` ` 14. Surrounding Area:, a. Land Uses: Varied, from agricultural to intensive urban uses. b. Zoning: Varied ' d. Beni Plan designations: Varied ' d. Parcel Sizes: Varied eu Pbpulation: Population center of Oroville surrounded by suburban uses and agricultural uses. ` . Appendix F (b) I APPENDIX 6 N z s v L _ e C C a C rr 4 Y � y r r ■ r .r s ■ 6 � QQ, p �'� C V � � O o E Q E q v a C u C i y y E E E e z v a y OO Oc y 7 Y s S Q � S E E .72 L c c E u Q v 'a N � Y~ •a � = M •a � M L 'a ._ M •a •� ■ � GG in J v^o . sY i � O ■ s■ • o 16 t ■ � O � J o R � A t � V y Y P — GO , Y s � v • Z � 1► n r N V 1=yY c Yy w A D v L _ e C C a C 4 V 0V V w L r r ■ O `t u C E C A M C w v a C u C i y A L Y e z APPENDIX 7 YEARLY AVERAGE*EQUIVALENT SOUND LEVELS, IDE.14TIFIED AS REQUISiiE TO PRO TI ECT THE PUBLIC HEkLTH kND WELFARE WTTH AN ADEQUATc MARGIN OF SAFETY Code: a. Since different ty,pcs of acti�ities appear to be anomated with differtnt lee tdcntifi ` atUort of : m.axunum )eetl for acDrtty interfertncc may be difficult except in those - -- ritcumstancm wherr speed. communr,:.ation is a C1Ucal acl7etty. (Sec Figure D-2 for no�x,l-mocks as i function of distant wruct� allow saus:actory commune®uon.J 5 Based on lowest level. C. 6ascA.only on tr-&nng loss. d. 'An4g(s) of 75 dB may be identified in these situstions so long as the exposure over the remaining IG hours'per day is low enough to rrsu,it„in a negligible contribution to the 24_hour ave no ater than an L of 60 dB. gre Noir Explanation of identified ketl for huririg.)=: The exposu.rt ptnod which ' nk :ter.' hung Iog at the idcnt�ficd kneel is V period Of 40 ycam Refers to energy rather than arithmetic aeera.gaL ,, - Indoor Outdoor r To Protect A c tivi ry -Hca-ring Lo= . To Protect A.c tM t y H csri n g Lou Heasurc A¢ain s t lntcr- Conde-, Both Ef- A gain s t re Lister- Conside— Both Ef• fertnct lion feta (b) ference tion (ecu (b) Rcsidcntial with Out L-dn 45 45 . 55 55 s)dt Space and Farm _ Revdcnccs Ltq(24) • 70 70 Residential with No :fin 45 d5 Outside' Spa= 4y(24) .70 Comiricrdal Ltq(24) (a) 70 ) 70(c) I (a) 70 I 70(c) Ins,8i7rdrsportalion. Ltq(24) (a) I. X70 I tq(24Nd) (a) I 70 (a) I I (nduittial I 70(c) I (a) 70 I 70(c) Hospitals I L-dn <5 45 55 55 4q(24) 7p 70 Educa~Dona l 40(24) 45 I a5 SS S5 I. 70 70 Rr-CT'CationaIAr= L�q(24) � (a) I .I 70 I ,-._70(c) I (a), 70 70(c) Farm Land and (2 4)(a) 70 70(c) General Unpopuiated Code: a. Since different ty,pcs of acti�ities appear to be anomated with differtnt lee tdcntifi ` atUort of : m.axunum )eetl for acDrtty interfertncc may be difficult except in those - -- ritcumstancm wherr speed. communr,:.ation is a C1Ucal acl7etty. (Sec Figure D-2 for no�x,l-mocks as i function of distant wruct� allow saus:actory commune®uon.J 5 Based on lowest level. C. 6ascA.only on tr-&nng loss. d. 'An4g(s) of 75 dB may be identified in these situstions so long as the exposure over the remaining IG hours'per day is low enough to rrsu,it„in a negligible contribution to the 24_hour ave no ater than an L of 60 dB. gre Noir Explanation of identified ketl for huririg.)=: The exposu.rt ptnod which ' nk :ter.' hung Iog at the idcnt�ficd kneel is V period Of 40 ycam Refers to energy rather than arithmetic aeera.gaL ,, APPENDIX 3 LAND USE COMPATAB I L I M FOR COKLMN.I TY NOISE ENV I RONKE 2trTS INTERPRETATION NORMALLY ACCEPTABLE Specified land use is satisfactory, based upon the assumption that any buildings involved are of normal conventional construction, without any special noise insulation requirements. CONDITIONALLY ACCEPTABLE New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and needed noise insulation features included in the design. Conventional construction, but with closed windows and fresh air supply, . systems or air conditioning will normally, suffice. N'.)'tMALLY UHACCEP'; ABLE New construction or development should generally be discouraged. If new construction' or development does'proceeed, a deuiled analysis of the noise reduction requirements must be made and needed noise insulation features included in the design. CLEARLY UNACCEPTABLE New construction or development should generally not be undertaken. CONSIDERATIONS IN DETERMINATION OF N61SE—COMPATIBLE LAND USE A,. NORMALIZED NOISE EXPOSURE. INFORMATION DESIRED .Whefe sutficient data exists, evaivate land use suitability with rnpect -to-a. "normalised" value of CNEL or Ldn. Normaliard values are obtained by adding or wbtractint thr constants described in Table 1 to the measured or calculated value of CNEL or Ldn. 6 NOISE SOURCE CHARACTERISTICS The land use noise compatibility recommtndationt should be viewed in relation to the specific source of the noise. For example, aircraft and railroad noise is normally made up of hirher sinrle noise events .hats auto traffic but occurs less frequently. Therefore, different sources yieldint the same composite noise exposure do nor necessarily create the same noise environment. The Stitt Aeronautics Act uses 6S dB CNEL as the criterion which airports must eventually meet to .protect existing residential commvnitits from unacceptable exposure ,tovireraft noise. In odder to faciliUtt the pur,�uses of the Act, one of which it to encourage land uses compatible with the 65 db CNEL criterion wherever possible, and in order to facilitate the abiliry of lir'ports to comply with the Act, residential uses located in Com nrunity Noiw Expowre Areas prwter than 65 dE should be di►eour• aced and considered located within normally unacceptable areas, C, SUITABLE INTERIOR ENVIRONMENTS One obivctive of Ieseatint res.dtntial units relative to a known noise wurct is to maintain a suitable interior noise environment at no rreater•thin 65 dB CNEL of Ldn. This requirement, coupled with the meawred or ealculatrd noise reduction performance of the type of structure under consideration, should jovern the minimum accept• able distance to a noise source. D. ACCEPTABLE OUTDOOR ENVIRONMENTS Anothv. consideration which in some communities Is an ovrrridirst fact'0r: is' the desire for an acceptable outdoor noisy environment. When, is the cut, more rtstrklive standards for land uv CO"' patlbilif.y. typically below the maximum conuiorred " normally acceptabie" for that rand use eattZory, may be appropriate. COMMUNITY NOISE EXPOSURE Ldn OR CNEL, dB LAND USE CATEGORY 55 60 65 70 75 80 RESIDENTIAL — LOW DENSITY SINGLE,FAMILY, DUPLEX, MOBILE HOMES RESIDENTIAL —MULTI. FAMILY /// ✓//// TRANSIENT LODGING MOTELS, HOTELS SCHOOLS, LIBRARIES, CHURCHES, HOSPITALS, NURSING HOMES AUDITORIUMS, CONCERT HALLS, AMPHITHEATRES I I i SPORTSARENA,OUTDOOR SPECTATOR SPORTS ////✓i///ii /�%//ti//// ///� I ( r PLAYGROUNDS, NEIGHBORHOOD PARKS77 lf I I I...... GOLF COURSES, RIDING 1. •' '•t . . I ... •t•'.'• •'• = . STABLES, WATER RECREATION, CEMETERIES OFFICE BUILDINGS, BUSINESS COMMERCIAL AND 3 ' ' '' PROFESSIONAL IN,D;USTRIAI MANUFACTURING UTILITIES, AGRICULTURE INTERPRETATION NORMALLY ACCEPTABLE Specified land use is satisfactory, based upon the assumption that any buildings involved are of normal conventional construction, without any special noise insulation requirements. CONDITIONALLY ACCEPTABLE New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and needed noise insulation features included in the design. Conventional construction, but with closed windows and fresh air supply, . systems or air conditioning will normally, suffice. N'.)'tMALLY UHACCEP'; ABLE New construction or development should generally be discouraged. If new construction' or development does'proceeed, a deuiled analysis of the noise reduction requirements must be made and needed noise insulation features included in the design. CLEARLY UNACCEPTABLE New construction or development should generally not be undertaken. CONSIDERATIONS IN DETERMINATION OF N61SE—COMPATIBLE LAND USE A,. NORMALIZED NOISE EXPOSURE. INFORMATION DESIRED .Whefe sutficient data exists, evaivate land use suitability with rnpect -to-a. "normalised" value of CNEL or Ldn. Normaliard values are obtained by adding or wbtractint thr constants described in Table 1 to the measured or calculated value of CNEL or Ldn. 6 NOISE SOURCE CHARACTERISTICS The land use noise compatibility recommtndationt should be viewed in relation to the specific source of the noise. For example, aircraft and railroad noise is normally made up of hirher sinrle noise events .hats auto traffic but occurs less frequently. Therefore, different sources yieldint the same composite noise exposure do nor necessarily create the same noise environment. The Stitt Aeronautics Act uses 6S dB CNEL as the criterion which airports must eventually meet to .protect existing residential commvnitits from unacceptable exposure ,tovireraft noise. In odder to faciliUtt the pur,�uses of the Act, one of which it to encourage land uses compatible with the 65 db CNEL criterion wherever possible, and in order to facilitate the abiliry of lir'ports to comply with the Act, residential uses located in Com nrunity Noiw Expowre Areas prwter than 65 dE should be di►eour• aced and considered located within normally unacceptable areas, C, SUITABLE INTERIOR ENVIRONMENTS One obivctive of Ieseatint res.dtntial units relative to a known noise wurct is to maintain a suitable interior noise environment at no rreater•thin 65 dB CNEL of Ldn. This requirement, coupled with the meawred or ealculatrd noise reduction performance of the type of structure under consideration, should jovern the minimum accept• able distance to a noise source. D. ACCEPTABLE OUTDOOR ENVIRONMENTS Anothv. consideration which in some communities Is an ovrrridirst fact'0r: is' the desire for an acceptable outdoor noisy environment. When, is the cut, more rtstrklive standards for land uv CO"' patlbilif.y. typically below the maximum conuiorred " normally acceptabie" for that rand use eattZory, may be appropriate. F TABLE OF CONTENTS I . INTRODUCTION . . . . . . . . . . . . . . . . . 1 II. BACKGROUND . . . . . . . . . . . . . . . . . 3 III. DESCRIPTION OF THE PROJECT AND ITS LOCATION . . . . . . . . 4 A. General . . . . . . . . . . . . . . . . . .. . . . . . . 4 B. Location and Access . . . . . . . . . . . . . . .. 4 C. Summary of Policies . . . . . .. . . . . . . . . . ... 4 IV. DESCRIPTION OF THE ENVIRONMENTAL SETTING . . . . . . . . 8 A. General . . . . . . . . . . . ' . . . . . . . . . . 8 B. Natural Environment: . . . . . . . . . . . . . . . . 8 1 Soils . . . . . . . . . . . . . . . 8 2. Geology . . . . . . . . . . . . . . . ... . . . . 9 3. Seismic Activity 4. Hydrology . 9 5., Wat.er Quality . . .. . . . . . 1.0 6. Vegetation'., . . . . ' . . . . . . . • . . . .. 10 7. Wildlife . . . . . . . .. .• 11 8. Climatology/Air Quality . . . . . . . 12 C. Cultural Environment 14 1:.. Population and Land .Use .. 1.4 . 2. Noise '. .. 15 3...Circulaticn 19 4". Pub1i.c and Quasi -Public Services 19 De-velopment Trends . . . . . 22. 6:' Housing Availability and Supply 2.3 7., Economic Trends ... ._ . . . 25 8. Archaeology/History . . . . . . . . . . . . 25. V. ENVIRONMENTAL IMPACT OF THE PROPOSED ACTION . . . . . . . . 27 A. Genera 1 . . . . ... . .... . . . . . . . 27 B. Impacts and Mitigations . . - - - 27 V. Geology/Seismicity . . . . . . . . ... . . . . . . 27 2. Water Quality . . . . . . . . . 28 V` • ey 3. Vegetation . . . .. . . . •. . . . . . . . . . . 28 4. Air Quality . . . . . . ... . . . . 29 5. Land Use . . . . . . ... . . . . . . . . . . . . 20, 6. Noise . . . . . . . . .. . . . . . ... . . 29 7. Circulation . . .. . . . . . . . . ... . . . 30 .8. Public and Quasi -Public Services . . . . . . . . . 30 .,9. Development'Trends . . . . . . . . . . . 31 'VI. ADVERSE ENVIRONMENTAL IMPACTS WHICH CANNOT BE AVOIDED . . . . . . ... . . . . . . . . . . . . . 32 VII. ALTERNATIVES TO THE PROPOSED ACTION . .". . . . . . . . . 33 . A. No Project: . . . . . . . . . . . . . . . . . . ... . 33 B. Modification of Proposed Plan; Runway Length'. . . . . . 33 C. Modification of Proposed Plan; Type of Approach .' 33 , VIII. SHORT TERM USES -VERSUS LONG TERM PRODUCTIVITY' . . . . . 35 IX. GROWTH- INDUCING IMPACTS OF THE PROPOSED ACTION, . . ... . . . 36 X. ORGANIZATIONS, AGENCIES.' DOCUMENTS'AND PERSONS CONTACTED . . . . . . . . .• . . . . . . . . . . . . . 37 APPENDIXES 1. Area Map 2. Planning Area Map 3. Soils -Map Noise Cal.cul.ations. 5. Initial ,Study, 6. Effects of Noise on.People 7. Noise Levels Related to Health " 8. Land Us.e Compatible with Noises 1. I. INTRODUCTION The purpose of this report is to inform governmental decision -makers and the general public of the significant environmental impacts which may occur if the proposed Oroville Airport Land Use Plan (ALUP) is adopted by the Butte County Airport Land Use Commission and if the Butte County General Plan and the City of Oroville General Plan are made to conform. This draft Environmental Impact Report has been prepared in accordance with the requirements of the California Environmental Quality Act and the State Environmental Impact Review Guidelines. Prior to approval of the Airport Land Use Plan, the Butte County Airport Land Use Commission shall review this draft, the comments received and the responses to the various comments, and then certify that the'information has,been considered. An Environmental Impact Report (E.I.R.) is require=d for the proposed Airport Land Use Plan because the plan would allow, encourage and guide substantial development which could affect the Oroville Airport and the lands in the vicinity, and many aspects of community life in the area. This E.I.R. not only identifies the unwanted negative changes which could take place in the future but also indicates the alternatives, actions and conditions which would avoid, minimize or reduce the significant impacts identified. Airport land use plans establish a frameworb, of p._-licies and 'standards for future development, but. they do not specify all of the details of that development and they cannot predict which development will actually take place nor when. Consequently, this report must speculate on potential impacts in a general manner and is not as°exact as an impact analysis for a specific subdivision, rezoning or construction project. Future environmental assessments for individual projects. can reference any part of this E.I.R. or otherwise use the information contained within. Any mitigation measures suggested herein will also guide the development of specific measures to be applied to individual projects whose approval is subject to environmental review requirements. This Airport Land Use Plan E.I.R. can be most beneficial to decision -makers focusing on future decisions on proposed development projects within the area by analyzing cumulative, area -wide and long-range impacts which are difficult to'assess on a protect -by -project basis. It should be noted that this impact report does not consider the environmental impacts of specific projects which may be subsequently implemented in compliance with the plan, nor does it exempt any such projects from complying with the requirements of CEQA. The objectives and policies of the Oroville Airport Land Use Plan are directed towards orderly growth of the airport and its planning area, and to assure that development occurs in a manner and location that is consistent with important social, economic and environmental goals. II. BACKGROUND In accordance with state law, enacted to attain compatible land use surrounding airports, and requiring each county to create an Airport Land Use Commission (ALUC), the Board of Supervisors and the Butte County City Selection Committee, in accordance with California Utility Code Section 21670 et seq., have appointed said Commission. State law requires such Commissions -to dev'elop_Airport Land Use Plans: Itis optional to include other general aviation or military airports in such plans. In this A•i.rport Land Use Plan, the City of Oroville public airport is addressed in detail. This plan is intended -to complement and enhance the local'comprehensive planning•process'of agencies responsible for the land use in areas surrounding the Oroville Airport. Basic goals of the Airport Land Use Commission are: 1. Preservation of navigable air space around airports, 2.. General -safety of people and property around airports, 3. Mitigation of aircraft impacts. Powers and duties of the Airport Land Use Commission as set forth in Sections 21670-21678 of the Public Utilities Code are: 1. To.assist'local agencies•in insuring compatible land uses in the vicinity of existing airports to the extent that land in the vicinity of such airports is not already devoted to'incompatible uses, 2. To coordinate planning at the state, regional and local levels so as to provide for the orderly development of air transportation while at the same time protecting the public health, safety and welfare, 3. To prepare and adopt an.Airport Land Use Plan, 4. To review the plans, regulations and other actions of local agencies and airport _operators. It is important -to recognize that the Commission has no powers or control over the following 1. Lands presently developed in airport.incompatible uses, 2. The operation of .the Oroville Airport. This'plan establishes planning boundaries around the Oroville Airport area of influence., It sets forth appropriate land use, including building -height restrictions, to the extent that.such land is not already devoted to incompatible uses. 3 III. DESCRIPTION OF THE PROJhCT AND ITS LOCATION A. General The "project" is a set of long-range goals and the policies which will direct land .use surrounding the Oroville Municipal Airport in attaining the type of growth and development compatible with airport operations within the next twenty years. These goals and policies will be confined to the Oroville Municipal Airport planning area.(Appendixes 1, 2). This report will summarize the proposed goals and policies and the impacts that may occur due to the implementation of the plan. B. Location and Access The airport -is located approximately three miles southwest of central Oroville. Oroville Dam Boulevard (State Route 162) runs along the north boundary of the airport and connects State Highway 99E to the west with Highway 70 to the east thereby providing good access from Oroville and its environs. The access road leading from Oroville Dam Boulevard to the terminal building is a two -.lane asphalt surfaced road in good condition with unimproved shoulders. The road terminates at the south end of the existing apron area. The parking lot .,djacent to the terminal fronts on the access road. The access road and parking lot are adequate for present needs. There are no hazardous obstructions to aircraft using the airport. The airspace in the vicinity of the airport was checked and no violations of the Federal Aviation Administration, Part 77, were found. It should be noted that in performing an inventory of the existing airport facilities no violations of the Federal Aviation Administration or California Department of Aeronautics rules and regulations were noted. C. Summary of Policies Introduction The objective of the Airport Land Use Commission is to promote the orderly development of lands contiguous to the Oroville Airport in a manner which.safeguards the general welfare of the inhabitants, assures the safety -.:of -air navigation, and maintains the utility of the Oroville Airport,. To fulfill this objective,- airport areas of influence which encompass those areas where compatible land use planning is essential have been developed for the Oroville Airport. The following policy goals each apply to its special zone within the airport area of influence, and address three areas of concern 4 1. Preservation of navigable air space 2. General safety of people and property 3. Mitigation of ,airport impact The ALUP recognizes the need for consistent, rational application of criteria for land use around the Oroville Airport. It also recognizes that the Oroville Airport serves different aircraft types in different quantities, in different operating environments, and that each impacts its surroundings in a different way. Therefore, the policies presented in the plan are general in nature. They are based on federal and state standards for noise and safety and are designed to be adapted to individual cases. Within the restraint imposed by the ALUC's height, noise", and safety policy, land use planning for local need is left entirely to local jurisdiction. General Policy Within the boundaries of the airport area of influence, the ALUC recognizes its authority and jurisdiction is limited by the California Public Utilities Code 1/. General policies of thE: Commission shall be: 1. The Airport Land Use Plan will set general parameters for development of specific regulations and zoning for land uses within the :area of influence of the Oroville-Airport as guidelines for each member agency in the development of amendment of General Plans, Specific Plans, Zoning Ordinances, or other regulations required to achieve the goals of the Airport Land Use Plan for the Oroville. Airport. 2. For member agencies the Commission will assist -them in reviewing changes in General Plans or other community plan changes and propose new land use contiguous to airports (within the ai.rp°ort area of influence) to ensure consistency with the ALUC prior to formal actions by_cities or county. Coordination of such efforts also will be the responsibility of the Commission's staff. 3. ALUC's staff shall work closely with the Oroville City and airport management to implement provisions of the A.Irport Land Use Plan and to achieve the objectives of the ALUC. 4. ALUC staff w.ill work with member jurisdictions to develop procedures which will facilitate identification of parcels within the zone and safety area of the airport area of influence prior to actions such as zoning changes or issuance of building permits to assure compliance with the goals of the ALUP. 1/Section 25774 -et seq., Public Utilities Code. S 5. In creation of airport areas of influence, the ALUC shall use FAR, Part 77 contours and CNEL poise contours from the best sources available to it. The.ALUC shall revise and/or update CNEL contours whenever operational changes occur. 6. The ALUC has no jurisdiction over airport.operations.which include the number and type of aircraft taking off and'landing, time of aircraft activity and airport. traffic pattern used... 7. The ALUC has jurisdiction over land uses'.within the airport area of influence except to the extent that land within the area -of influence is already devoted to incompatible uses. Airport Height Restriction Policy Assuring the safe passage of aircraft into, out of and around the Oroville Airport ,by safeguarding and preserving navigable air -space is the objective ofairport height restriction policies." Federal Aviation Regulations, Part 77 sets forth criteria for describing the navigable air space.requirement of each airport. Objects which penetrate above imaginary surfaces described in FAR, Part 77 can impair safety. and raise weather minimums for instrument approaches, thereby decreasing the operational capacity of an airport. ALUC height restriction policies 'shall be to: Designate height restriction plans for the Oroville Airport as laid out in Chapter -3 of the ALUP, Restrict the development of new incompatible land uses within airport height restriction areas which penetrate FAR, Part 77 surfaces, Review any specific projects within the airport area of influence which may pose an intrusion into navigable air space.' Airport Safety Policy The ALUC safety policy objective is to assure the safety of people and property, in airport.environs from accidents involving aircraft and to minimize adverse influences of land uses on runway approach and clear zones,on aircraft landing or taking off. ALUC safety, policy shall be: To designate airport safety areas identified according to degree of hazard.'as safety area,l ( clear zone) , safety, .area 2 ( approach zone) , and safety area 3 (general airport traffic pattern zone). To restrict development of new, incompatible land uses within airport safety areas 1, 2,'and 3. Airport Noise Policy The ALUC noise policy objective is to assure that new land,uses in airport environs are compatible with aircraft. -generated noise, compatible land use planning and acoustical installation in -new structures. The, review of the ALUC requires the development and enforcement of regulation involving zoning for general compatibility,. site planning and acoustical installation' standards. ALUC noise policy is within the boundary of the 55 CNEL contour as projected in the Airport Land Use Plan. 1. Institutional land uses such as schools,, hospitals, convalescent homes and other inpatient health care facilities shall not be permitted, 2. Multi -family residential land uses may be permitted subject to an acoustical analysis showing that all structures have been designed to limit interior noise level in,any habitable room to 45'dB CNEL, within -the boundaries of the 55 CNEL contour as projected in the Airport Land Use Plan. Compliance,with the acoustical analysis requirement shall be as. specified in Section 28, Noise Insulation ,Standards, Title 25, Chapter 1, Subchapter 1, Article 4 of -the California Administrative Code. IV. DESCRIPTION OF THE ENVIRONMENTAL SETTING A. General Oroville is located on the eastern edge of the SacramentoValleyin the lowest foothills of the Sierra Nevada range. :the airport planning area occupies a valley floor type environment with annual grasses and valley oak'as its primary vegetation. Elevation in this area is generally. between 100-200 feet A.S.L. Agriculture'is.not of primary importance, however,,there are some orange, mandarin and olive orchards in the planning area. There are also -large -parcels of land that. are suited for cattle grazing. Oroville is'the•economic center for the,planning'area as well as the outdoor recreation center for a large portion of the north state. The recreational and tourist opportunities that exist as a result bf.the Oroville Dam and its relatedfacilitiesare numerous. Lake Oroville is popular for various .types of boating, fishing and skiing. There are also hiking and camping facilities available. The City is in the process of upgrading its historical sites in an attempt to further expand its tourist. attraction. B. Natural Environment 1. Soils The Soils Map (Appendix 3), along with this text, shows general patterns of the dominant soils for the Oroville area. Thi's,soils.map isintended for general planning purposes only and decisions regarding specific sites or proposals should be based on more.accurate soils. tests. The OrovillelSail SUirvey Report. contains extensive.inFormation regarding the characteristics common to each. Two broad categories of soils can be identified in the Orov'ille Airport planning area: alluvial soils and terrace soils. Of these, the alluvial soils, particularly the Columbia soils, are considered agriculturally important., rated as Class I-II by the Soil Conservation Service (SCS'). Nearly all of these soils are either built 'on -or were overturned by dredging. The terrace.soils, particularly the Redding soils, are considered Class IV soils (good to marginal) and are used for livestock grazing and other smaller orchards, mainly olives and citrus. Commercial livestock grazing is largely confined to peripheral areas where parcel sizes are large enough to be economically useful and fewer .conflicts with residential development exist. s 2. Geoloey The natural earth materials present in the subject area can be divided into three major groups for planning purposes: Volcanic Rocks: Basaltic lavas cap South Table Mountain and the Campbell Hills to the north and northeast of the airport. Sedimentary Rocks and Older Alluvium: Conglomerate, sandstone and siltstone occur both as moderately consolidated rock units and as poorly consolidated soil types on the flats and lower foothills of the area around Thermalito and the airport. Recent Alluvium: Unconsolidated, principal component of the recent River to the east of the airport. coarse gravel and sand is the alluvium located along the Feather An extensive discussion of geologic units and their land use capability is contained in the Survey Report. 3. Seismic Activity Movement of the Cleveland Hill Fault on August 1, 1975, was apparently the result of crustal strain developed in the Foothill Shear Zone. The Cleveland Hill Fault, located about nine'miles east of the Oroville Airport, trends north-northwest and is approximately 10 miles long. It is presently the only known active fault within Butte County. 4. Hydrolog The Oroville Airport plan area is located downstream of the Oroville Dam and is bordered on the southeast by the Feather River. Flooding within the area is not a problem',due to the Oroville Dam's control and regulation of the river. During periods of heavy rain, releases from spillway may cause localized flooding in the wildlife area south and east of the airport. The major stream which drains the planning area is Ruddy Creek in Thermal:ito. .Lands adjacent to -.'the Feather River are flooded periodically by releases from Lake Oroville. These areas are designated as floodways by the State Reclamation Board and most development is prohibited by law. Thermalito has been affected.,by flooding and localized drainage problems in past winters. Lake Oroville, the Forebay and Afterbay provide recreational opportunities as well as the primary function of flood control and water conservation. 9 Portions of Thermalito have poor drainage due to the geologic structure of the area which results in a high water table and localized flooding. Studies have been prepared for the development of a storm drain system throughout Thermalito.to reduce flopding problems. 5. Water Qualit The quality of water designated for domestic, industrial and irrigation uses is excellent. The various water supplies ars: diverted from various branches of the Feather._River or pumped from deep wells. The water that is stored in Lake Oroville is transported out of the area via the rivers, canals and aqueducts that are a part of the California State Water Project 6. Vegetation There are eight habitats located in the Oroville Airport planning area. Open. Water: consists'pr'imarily of various species of algae and plankton. Marsh: tule, bulrush, water -lily and sedges _(re abundant.: Willows are sometimes common and algae is the most.abundant.small plant. Riparian: willows, cott-onwood,, sycamore, and valley oak are dominant. Elderberry, black walnut, and box -elder form a mid -story. Blackberry, and poison oak are common shrubs. Many grasses and herbs occur. Grassland: vegetation is largely limited to grasses and herbs less than three feet high. Trees are sparse and widely scattered. There are many vernal pools during the rainy season. Originally, native bunch grasses were dominant: however, overgrazing caused these to be replaced by annuals such as Bromus and Festuca. Common wildflowers are valley goldfields, johnny tuck, tidy tips, and frying pan poppy. Valley Woodland: White (,valley) oak is the dominant species. It may be located near moist areas where various riparian plants may be located. Wild grape and poison oak are common. Shrubs and grasses and herbs cover the woodland floor. Town -Residential: Native plants necessary for wildlife have been replaced. by exotics. However, there are some exotics that are useful to wildlife: pyracan.tha, honeysuckle, maples, poplars, bottlebrush, and -most -domestic nut and fruit.Itrees. Open Fields: Located below.3,000 feet elevation, these fields are used fo"r grazing and various crops. Agricultural conversion has .resulted in domesticplants with occasional native.species or exotic .weeds. 10 61 Orchards: Located below 3000 feet elevation. Include agricultural tree farms, eucalyptus groves and some non -crap exotics. Common orchard crops for the Oroville area include olives, oranges and mandarins. Individual rare plants are.not.located.within the Oroville area; however, riparian vegetation as a habitat type is considered to be endangered. This habitat is primarily located along the Feather River. There are. two relatively small vernal pools in the Thermalito area west of 18th Street.' 7. Wildlife There is a wide variety of species inhabiting the Oroville area. A complete listing of the species is too lengthy to include in this report; however, a partial listing is included as Appendix 3 of the Environmental Impact. Report prepared for the Oroville General Plan Amendment. Many species are associated with a particular habitat- -- they are as follows: Open Water: Used fall through spring when.water, birds are wintering here.. Mammals include beaver and muskrat. There are about 98 bird species; most are migratory and diurnal. Bird species of special concern are the Aleutian Canada goose, bald eagle, and peregrine falcon,.which are endangered. The osprey and white pelican, populations are diminishing. Marsh:' Wildlife use is much greater than it would appear to be to the casual observer. During fall and winter large flocks of wintering birds are found in marsh areas. There are about 14 species of mammals; most of which are nocturnal. Commonly observed are muskrat and bats; raccoon, mink and striped skunk are common. There are about 107 species of birds. Species of special concern include those listed under the "open waters" designation and the black rail and yellow -billed cuckoo, Which are on the State rare list. Riparianp The riparian habitat supports the greatest wildlife densities.of all terrestrial habitats. Some species depend on riparian habitat for their continued existence. There are about 32 known mammal species. Frequently seen are deer, gray squirrel, opossum, red bat., cottontail, deer mouse, red fox and ringtail. There 'are about 144 habitat'is of major cuckoo. known bird species. The loss of riparian importance in the decline.of the yellow -billed 11 The osprey, Copper's hawk, sharpshinned hawk, purple martin, willow flycatcher, western blue -bird, Bell's vireo, yellow warbler, and yellow chat have declining populations. Several mammal species, such as the rngtail, deer mouse and deer are being extirpated due to the loss of riparian habitat. Beaver and river otter are threatened by flood control and bank stabilization projects. Grasslands This habitat is commonly underrated as a wildlife habitat: Birds are largely ground dwellers. There are about 89 bird species. There are 24 species of mammals. Cornmon.are'the broad handed mole, pallid bat,..black-tailed hare, botta pocket gopher, California .meadow mouse and badger. Valley -Woodlands Much of the wildlife activity takes place high in the oaks. There are 83 bird species and'32 mammal species. Town -Residential= Dependent upon intensity of all pollution forms, density of human structure and population, domestic animals; and the destruction of native habitat. Use can be fair if encouraged by human residents. Mammal use most affected with virtual extirpation of all species in areas intensely converted to human use. Bird use reduced drastically with natives frequently replaced by undesirable exotics such as starlings and house sparrows. (Information regarding vegetation and wildlife was extracted from an informational booklet prepared by Jim Snowden of the California Department of Fish and Game entitled Butte County Habitats.) 8. Climatology/Air Quality The general climate of the Oroville area is Mediterranean Warm Summer, characterized'by two predominant seasons, composed of hot, dry summers and mild, rainy winters. Approximately 97% of the annual precipitation, averaging about 28 to 30 inches, occurs during the winter months. Average daily temperatures ranged (in 1978) from 42.8 in December to 78.9 in July. The winter minimum was 23 degrees F on December 31, 1978, and the summer maximum was 115 degrees F on July 9`, 1978. Winter lows are rarely less than 16 degrees F and summer maximums are rarely higher than 116 degrees F. The frost -free growing season averages 7 to 8 months in iength, and is favorable to a wide.variety of crops. Frevailing.�w.inds are from the south-southwest or from the north-northwest, depending mostly on the season. 7The south winds are. usually related to storm fronts. North winds are typically associated with high pressure ridging and bring fair weather. The growing season is about 270 days. 12 The Planning Area site is located in the eastern portion of the Sacramento Valley air basin. This air basin is enclosed by the Sierra Nevada, Cascade and Coastal Ranges. The mountains create a barrier trapping pollutants in the valley at times and limit dispersal. Because the air basin is a natural closed basin, often with poor air' circulation and high atmospheric stability, air quality may undergo'a very rapid local degradation at any time of the year. This stability, in conjunction with a frequent inversion factor which traps the cooler air under a warm air mass, intensifies pollution .concentration and tends to -hold air pollutants near the ground. Air quality in Oroville, as in the rest of the county, is relatively good, but the standards for carbon monoxide (CO), photochemical oxidants (smog), and suspended particulates are occasionally exceeded, and the County has been designated a non -attainment area by the U.S. Environmental Protection Agency. Detailed analysis of air quality for Butte County is contained in the Butte County Non -Attainment. Plan published by the Butte County Association of Governments, January 17, 1979. The City of Oroville does not have a monitoring station that would identify local emissions; therefore, county -wide data is used. All counties north of Sacramento and Yolo Counties within the Sacramento Air Basin have been designated as non -attainment areas for photochemical oxidant on the basis o'f recorded violations at the various county monitoring stations. . As a result of the non -attainment status, Butte County has adopted a non -attainment plan which contains air quality control strategies. Adherence to the plan will help to obtain compliance in a timely manner. The City of Oroville utilizes the Butte County plan and has not developed additional strategies.. The planning area is serviced'by an Air Pollution Control District whose major responsibility is to monitor and regulate the emissions from stationary sources within the county. They have identified several sources of air pollution. Among those are mobile sources, agricultural burning, fuel combustion, mineral and wood industries, and agricultural operations. It should be noted that pollutants from mobile sources are decreasing due to tighter emission control standards. The decrease in the number of older vehicles, which are not required to have emission control, is also a factor in the decline. Types and Effects of Air Pollution Hazardous exposure levels vary with the amount of each pollutant and the extent of time exposure occurs. Carbon monoxides begin to be hazardous to most people at concentrations of 100 parts per million (ppm)'if experienced. over a period of several hours. However,some individuals are a•f.fected at lower levels of exposure. Nitrogen dioxide, one of several nitrogen oxide compounds (NOx), is considered very toxic. This 13 air pollutant affects visibility due to its brown coloring. Ozone, another'substance extremely toxic to humans, is emitted in usually low amounts. However, the chemical interaction of nitrogen oxides, certain organic compounds, and sunlight forms ozone in the atmosphere, increasing its concentration. The mixture of pollutants called "smog" is formed by the action of sunlight on the various.colorless gases emitted by vehicles, causing a visible, harmful haze within the local atmosphere. Hydrocarbons and associated airborne particles -result from incomplete combustion of fuels and from agricultural burning (rice waste during the autumn months). These substances are known or suspected to be environmental causes of cancer if exposed to'for prolonged periods of time. Total suspended particulates (TSP) include hydrocarbons, as well as dust, soot, lead, photochemical smog and other minute or pulverized pieces of matter. These particulates, such as -pesticides and other airborne chemicals and even radioactive particles, are often extremely toxic. Under most concentrations, TSP create a nuisance and objections from people who are exposed to them. However, individuals with respiratory problems can be severely affected when exposed. Therefore, air pollution is a.potential health problem in the area. The State Air, Resources Board has the primary responsibility for controlling emissions to achieve improved air quality, implemented locally by the Butte County Air Pollution Control District. (Butte County DEIR for the Chico Area Land Use Plan, 4/82, p. 59) Wind A comprehensive analysis of airport winds has been made. ,This analysis was compared -to the Wind Rose that was prepared as part of the Oroville Airport Plan in 1985. Only minor deviations were noted. The Wind Rose shown on the "Existing Facilities Plan" indicated that the runways are ideally oriented for the winds observed. Coverage for the two runways was computed on the basis of cross wind components not exceeding 15 miles per hour in accordance with Federal Aviation Administration criteria. Runway 12-30 provides 97.6 percent coverage and Runway 1-19 provides 94.8 percent coverage. The combined coverage on the two runways is excellent, 99 percent or greater. C. Cultural Environment 1. Population and Land Use Population densities and land use characteristics within the Oroville Airport plan area consist of at least four distinct types. First, to the east and northeast of the airport, is the area commonly known as Thermalito. This area is planned for low- to medium -density residential with appurtenant commercial uses, and is developing in that manner. The area immediately to the north of the airport is within the"incorporated city limits of Oroville and is zoned for industrial uses. To the northwest, west and south are rural residential areas of parcel sizes 14 ranging from 3 to 5 acres in the'northeast and 10 acres to the south, up to over 100' -acre parcels. Further to the south and west is the Thermalito Afterbay, part of the Lake Oroville Dam system of water management. To the east and southeast of the airport is.an area of historic dre.dger,tai.lings,,the borrow area (rock soUrce for the Oroville Dam), and riparian habitat along the Feather River. This area has been set aside as a wildlife area. While the characteristics of the planning area have not undergone radical change in the last ten to twenty years, the Oroville area outside the airport plan area has experienced considerable growth (see Table 1). That growth is expected to continue on' 'into.the year 2000. Additionally, the Oroville Airport serves surrounding areas which are not generally consideree to be in the Oroville area. Most notable are Gridley, Biggs and'Richvale, to the west and southwest. Generally, use. of the Oroville Airport by people from the Gridley -Biggs and Richvale area is limited to private sport flying, and not commercial uses. Within this larger area there are approximately 50,000 people as of the 1980 Census, and most likely from 55,000 to 60,000 people as of 1985. 2. Noise The noise environment for the Oroville Airport area is quite good, with only`a few residential sites being exposed to excessive noise levels. These sites are located south of the Airport, west of Larkin Road. In most of the airport plan area, surface vehicular noise is the primary ,noise generator with other factors creating a minor'intrusive type of noise background. Noise•sources in•the Oroville Airport plan area: 1. Major traffic circulation arterials 2. All industrial processing plants 3. The Larkin . Road Drag.strip 4. Oroville Municipal Airport 5. .18th Street, north, or Oro Dam -- motocross recreational. riding 6. Larkin Road near Timothy -- shooting range Noise sens.itiv'e sites: 1. Rest homes and convalescent homes 2. School locations TABLE 1 PLANNING AREA POPULATION `1960-1990 1950 1960 1970 1975 1980 1985 1990 1995 2000 Thermalito N/A .,N/A 4,2174,811 5.,.063 5,.500* 6,050* 6,650* 7,30.0* (includes the `airport planning area) Oroville.City 5,345 6,115 7,536 7,368 8,683 9,97510,673.*„ 11,420* 12,219* Oroville Area 19,154 21,060. 21,717 28,450 3S,4.0.0. 37,400* 39,363 45,633 52,901 Butte County 64,930 82,030 101,969 1.20,901 143,850 161,000 186,298 _.206,684 22S,`77S Fi-gur.e.s :based on past. -development trends and City annexation policies.. 3. Wildlife preservation area. The noise impact on surrounding areas is modest under the current level of airport operations. The 55 dB(A) (.Community Noise Equivalent Level) contour.extends approximately 1,000 feet beyond the airport property line on the Runway 1-19 centerline extension. The area within this contour is currently uninhabited but could be developed with residences at rural densities, light industrial uses, etc. The level of operations at the airport has been increasing 2 to 5 percent. a year. At this rate, 150,000 to 200,000 operations per year can be expected by the year 2000. About 500 of these operations would be corporate jet aircraft. Approximately 80 percent of jet aircraft operations are expected to use Runway 1-19. As airport operations increase, the 55 dB(A) (level day -night) contour will extend about 3,000 feet beyond the airport property boundary. This extended contour would partially or totally enclose 15 of the 20 lots in the subdivided area located immediately southwest of the airport. The approximately contour positions for various operation levels are shown in Appendix 2. Some precautions should be taken in using.this contours 1. This analysis presumes that 90 percent of aircraft operations are during daylight hours. This assumption is enforced by the present lack of runway lighting on Runway 1-19. However, increased nighttime air freight and air taxi service is expected because VASI lighting is scheduled for.Runway 1-19 in 1986, with runway lighting scheduled between 1989 and 1991. 2. The contour position calculations are based on noise energy, but do not acknowledge that aircraft noise is particularly intrusive. A Ldn level of 55 dB(A.) created by aircraft noise is considered less acceptable than.an equal level.generated by'less obtrusive noises of similar energy content. (see Appendix 4). 3. Propeller aircraft operations dominate the noise contours. Jet aircraft operations, while not dominant in determining noise contours, will produce significant individual intrusive noise occurrences. 4.' The analysis assumes no significant jet transport operations. The addition of a scheduled passenger service using large jets would move the 55 CNEL line outward. The noise impact of jet operations should .be addressed in the Oroville Airport Land Use Plan, and certainly before such service is.'initiated. The noise impact of large jet traffic can be adequately represented by a simple outward shift in the noise contour. Such operations, though infrequent, will cause isolated noise events at significant levels. 17 a. Noise Criteria and Standards There is an inherent conflict between land use and noise generation. A quiet parcel of land'has a wider range*o.f potential-uses,'all other factors being equal. As noise levels increase, the choice of an appropria=te use narrows. The effect.of..increasing noise levels on.' residential areas is shown in Appendix 6. Noise abatement has.a:price, sometimes -a very high price. Thus planni-ng for land use involves a balance between a maximum range of use choices and an acceptable level. of allowed noise. The criteria shown, in Appendix 7 are -based c)n-`prevention of hearing loss or uninhibited activity performance. More widely referenced criteria, are shown in Appendix"8. Note D in Appendix 8 -is of.considerable local relevance. A quiet outdoor environment is considered one of the assets of the.Oroville area: The maintenance of this asset:,will require more stringent noise standards than may be appl-ed in noisier urban areas. b. General.:Noise Control Strategies 1. Noise 'should be considered as a basic aspect: of planning, zoning, and building permit actions. 2. See City of Oroville Ordinance No. 12280. 3. Noise generated by transportation systems should be anticipated to allow sufficient lead time to develop mitigation measures. 4. Enforce vehicle noise emission, statutes,. 5. Promote a public awareness -of noise problems. C. Policies 1. Discourage residential development in areas with an actual or anticipated day -night average level (Ldn) of noise exceeding 55 dB(A): 2. Require sound. insulation and/or other sound barriers in areas with an actual or anticipated noise level of 55 dB(A). 3. Encourage infilling of vacant sites surrounded by development, to lessen growth of,traffic-related noise. 4. Consider•..and mitigate the noise impacts of all development., partieul'arly.in noise -sensitive areas. 18 5. See City of Oroville Ordinance No. 1380. 6.'. Pursue completion of the Oroville Airport Land Use Plan currently being prepared by the Airport Land Use Commission (ALUC); to include comprehensive plans for noise -compatible land use and appropriate zoning controls. 7. Promote the preparation of an area transportation study to assist in. defining• traf f ic-related noise problems-. S. Mitigate existing traffic noise through the enforcement of vehicle noise emission statutes,.both for on- and off-road uses. 9. Encourage a broader public understanding of the detrimental effects of noise, and methods for its reduction and.prev6ntion. 3. Circulation The street system in the airport plan area is functionally divided into arterial, collector and local streets. The major north -south transportation, •=artery is State Highway 70. Oro Dam Boulevard'(SR 1624 - Grand Ayenue and Nelson •Avenue provide the majority of western access 'to the City. The Oroville area transportation needs are -also served by the Oroville Municipal Airport, Union.Pacific Railroad, Greyhound.Bus.Lines, th"e Butte County Transit and the Oroville Area Transit. Lo"cal public transportation is provided by the Oroville Express and the Oroville Area Transit. 4. Public and Quasi -Public Services a. Power Pacific Gas and Electric provides the primary power source for the Oroville Airport plan are.a., Electricity is available to the majority of the planning area. b. Natural Gas Pacific Gas and Electric provides natural gas to•the area; however, gas line extensions will be necessary. in some cases . . C. Telephone Telephone service is available throughout the .planning area. In.some isolated instances telephone service will not be extended until addit'lonal:,i,nfill connections are committed. 19 d. Water Thermalito Irrigation District (TID) supplies dome=stic water service to the majority of the Thermalito area. There are no irrigation accounts within the planning area. Water is received from the Thermalito Power Canal and six local wel•1s. TID at present serves an estimated population of:7,000 by way of 2•,500 active service connections. e. Sewage Wastewater and disposal in the Oroville area is accomplished by means of three separate collection agencies and a centralized sewage treatment facility together with, in certain areas, individual on-site septic tanks in the outer area of the planning unit. The centralized advanced secondary sewage treat.ment..facility (SC -OR) is owned and operated by the Sewerage Commission - Oroviale Region. This facility is designed to accommodate an averageflow of 5.31 million gallons per day, with present dry-weather'aver-age flows of about 2.0 mgd. The plant was designed to serve an estimated population of 44,500. The current estimated connected,population is 17,500. SC -OR has no funded capacity, nor capacity set aside, specifically for industrial waste, toxic or plant operation. Thermalito Irrigation District became a sewering agency in 1971 due to 4. the need created by widespread septic failure that resulted in a health hazard in the Thermalito area.'.This sewage service area.(CSA 26) maintains a gravity -flow system from north to south with one pump ,station to transport effluent across the Feather River to the SC -OR interceptor within 7th Avenue. No public sewer system serves the airport. Sewage disposal is by underground septic tanks and leach lines. .The nearest public sewer is located 2,200 feet easterly of the airport across Larkin Road, and runs down Fresno Avenue to Harlan Avenue. Construction drawings and layouts for sewer extension.have been prepared in conjunction with a private subdivision. This development would require extension of sewer facilities between Larkin Road and Harlan Avenue. Development of the airport property will require construction of off-site sewer facilities. Extension of sewer facilities to the airport should be deferred until there is a demand, or until grant funds are available from the State and/or Federal Government. Development of private property may cause construction of part of all of the facilities by private developers, resulting in significant savings to the City. Sto.rmwater',is•disposed of through a system of catch basins, underground pipes, culverts and open ditches that discharge into established natural drain age courses. The existing system is adequate for present uses and can.be expanded when additional airport development occurs. Miscellaneous grading is needed to improve surface drainage in low -and ponding areas. 1.1 f. Police. Police protection is provided by five agencies in the planning area. 1. Oroville Police Department (OPD): This department serves the area within t -he Oroville City Limits. This includes the airport, golf course, and the industrial land to the north of.Or.o-Dam Blvd. (SR 162) and -the airport. 2. Butte County Sheriff's Department (BCSD): This department serves all of the unincorporated areas of Butte County including the planning area and provides coroner's service to those areas contained within City boundaries. Service is ranked below what is considered to be a�cept.able. Departmental funds are allocated by the Butte County Board of Supervisors from the general fund. 3. California Highway Patrol (CHP): Provides traffic patrol for all State highways and roads throughout the County. (State•funded.) 4. California State Police: Services all State-owned park land. (State funded.) 5. California Department- of Fish and Game: •Monitors the enforcement of all laws relating to wildlife. (State funded.) g. Fire Protection 1. Oroville Fire Department: Provides fire protection to the areas within the City Limits. There are 26 full-time paid personnel "plus 30 volunteers and 1 secretary. Service is currently adequate and the department maintains advanced planning in order,to be prepared for future needs. Oroville Fire Department maintains a Class,4 rating by the Insurance Service Office., (Funded by City Council with general fund money.) 2. Butte County Fire Department/California Department of Forestry: Butte County contracts with the California D'e'partment of Forestry to provide fire protection. In the Oroville area there are 20 paid personnel and 45 volunteers. Currently, the Butte County Fire Department provides adequate rural service. (State and County funded.) h. School Districts 1. Thermalito Union High School District: 'This, district serves the majority of the airport planning'area. The district has three elementary schools, one of which (Poplar Avenue School) is located just outside of the airport planning area. 2. Oroville Union High School District (OUHSD): This district serves -the entire• planning area. There are two high schools and one, continuation school. The schools are not at capacity. •21 . 3. The Butte County School District maintains the special education program for the planning area. Mesa Vista School in Thermalito assists the children with speech and hearing impairments. Sierra Del Oro in the downtown area assists children with physical and mental handicaps. i. Medical Facilities The Oroville Medical Center maintains a 24-hour emergency staff, which is capable of treating the ma;iority of cases it receives. Certain cases must be transported to Chico, where more specialized equipment is located. There is ample bed capacity at.the medical facilities in the near term. 5•. Development Trends This section focuses on the recent development which has taken place in the planning area,.and within the entire Oroville area, and possible future trends. The amount and timing of recent development in Oroville, like most communities, has been a response to both .local events and larger -scale trends. The key local events in the past 20 years have been the construction of Oroville 'Dam and the related storage, power, recreation and access project.. This tremendous public investment in the 1960's was accomplished by all kinds of residential construction, development of the Oro Dam Boulevard commercial area, new public buildings and many churches. The slump which followed in the late 1960'•s and.early ,1970's was reflected in high vacancy rates, low housing costs, reduced business revenues and limited construction. Building permit data indicates that there were no more than 10 new housing units built per year in the City between 1969 and 1974, with similarly unimpressive totals for commercial and industrial development. It was during this slow period that the last major General Flan revision was adopted in 1973; a fact reflected in'the conservative findings and proposals of that effort. However, as in many semi -rural areas, the rate'of growth and development increased tremendously in the mid -1970's. Record City totals established in 1979, and not exceeded since, include 280 new housing units,'total construction value of almost $12,000,000 and 276 occupancy permits issued for businesses and apartments. The late 1970's construction peak was dominated by apartments and•a wide variety of retail businesses, especially•outlets of large chains., This area's substantial growth in that period reflected a nationwide trend of migration from large metropolitan areas to smaller communities with a slower pace, rural surroundings and outdoor recreational opportunities. Immigrants to this area included both retirees and families, frequently with substantial equities to invest and valuable exper.ie.nce and skills to put to use. 22 0 Development has been substantial in the past two years but has definitely tapered off from the 1979 peak.. The continued inflation of financing costs and energy costs has had several other effects on development. Residential sales units are becominS smaller and more energy efficient; evidence of this trend is .shown by the numerous recent, proposals for small, _attached homes with no side yards and jointly --:owned open areas. Limited demand for wood products has in turn limited local employment, income and effective demand for housing and services. This effect is in addition to -the effects of the migration slow -down caused by potential residents not being able to sell their existing homes and move here. Although these trends may continue to limit development, many proposals for new construction are in the works in this are.;a. Over 1,000 residential lots or sales units have been approved by the City and await financing and development. Judging from recent applications for.City sponsorship of industrial development bonds, there are also many industrial and commercial projects ready to go if financing is available and affordable. Development plans which may greatly affect the future of this area must also include the long list of public facilities and development assistance projects proposed for funding by the,City's Redevelopment Agency. The above plans for growth are more than prograinrs to achieve the economic benefits of growth. Such plans are a clear recognition that the Oroville area has many prerequisites to growth and few constraints with the big city to small town migration trend expected to continue in the 1960's, all types of development can be anticipated and the "filling in" of the vacant sites in the planning area will continue. The only real question is. "how fast?" Migration trends and growth pressures could be greatly modified by future events. Oroville's growth would undoubtedly accelerate if there were significant reductions in interest rates. Short-term increases in migration from the metropolitan areas to the south could also be induced by earthquakes or environmental problems in those areas or by large new industry here. Large increases in growth pressures could lead to a complete "build -out" of the proposed land use pattern in ten or fifteen years and the resulting need to completely revise this plan long before that time.- On the other hand, economic factors could slow down future development enough to require only minor plan changes during.the next 20 years. All growth within the southern portion of Butte County will result in additional use of the Oroville Airport for both sport flying and for business and commercial flights. 6. Housing Availability and Supply The.number,of .households has increased consistent with the general population -growth: although the trend toward fewer persons per family will cause 'households to increase at a slightly faster rate than the population:. The fastest increase has been in the unincorporated area where developer activity is evident. 23 A detailed analysis of housing characteristics within.the entire Oroville area is contained within the Environmental Impact Report prepared by Cook Associates for an Amendment to the Oroville General Plan by the City of Oroville in Februar"y 1983. Within the airport planning area population density is quite low, ranging from 1- to over 300 -acre parcels, with the majority in the 10 - to 40 -acre range, except for the area to the northeast, along the, extension of Runway 1-19. Th'is area is predominantly 1/4- to 1/2 -acre parcels, mobile home parks and "some larger parcels that are of high potential for development of single-family residences. 'The area is planned for low,density residential use of up to 6 dwelling units per acre. Unmet needs: 1. Is there an adequate supply of sound housing units? 2. Are families overpaying for .shelter? 3. Are families -overcrowding to reduce housing costs? Of the three problem areas, only overcrowding appears to be declining, due in part to the reduction in family size. Although enough housing is being built to meet the supply problem, families must pay a disproportionate share of their income for what housing is available.. Planning. Area 2/ Oroville NEW CONSTRUCTION NEEDS, 1980-1986 Housing Housing 1/ Units Households Households Units 1979/80 1979/80 1985/86 1985/86 12,002 11,023 14,557 15,284 4,100 3,751 4,.337 4,554 1/ Includes 5% vacancy,factor. 2/ City figures included in planning area totals: Recent construction trends in the City indicate that the needed new. housing units may be reached by 1985. The current, vacancy rate in existing units is estimated by Pacific Gas and Electric CPG and E) to be near 5% based on a count of idle meters. Units under construction and new vacant"units would not be included in PG and E's estimate. This could increase the factor to 6%. There is a need to monitor potential over -building in the unincorporated area. 24 a 7. Economic Trends The City's local economy is a reflection of the.state and national economies. The housing and construction industry has been depressed, unemployment is high, and public entities are experiencing a lack of revenue with which to carry out mandated programs. Retail sales are also falling. -Several large industries have significantly reduced staffing levels and several commercial stores have closed. The City decided to take an active role in facilitating the expansion of industrial development and commercial construction by utilizing the City Charter power available to intervene in what is essentially a private market. Industrial Development Surplus vacant land within the airport boundary exceeds 200 acres. For the economic benefit of the City, the best use of this property is commercial light manufacturing. Transportation and circulation elements complement this location for light industry use as.follows: 1. Light industry is compatible with and complementary,to normal airport development. 2. Good vehicular access to the airport from Oroville and its environs is provided by Oroville Dam Boulevard (State Route 162) which connects Highway 99E (4 miles to.the west) to Highway.70 (2 miles to the east) . 3. A Union Pacific Railroad line is located 3-1/2 miles easterly of the airport via Oroville Dam Boulevard. Approximately 180 acres of surplus land is zoned for industrial sites. There are about 72'acres east of the easterly taxiway of Runway 12-30 available for industrial development. The triangular-shaped area between the runways is zoned for commercial light manufacturing, and consists of approximately 95 acres. The need for this additional acreage is not anticipated wit.hin,20 years. 8. Archaeoloxy/History Oroville was founded in 1848 as a gold mining camp named Ophir on the Feather River. 'As the entire'Sierra foothills boomed with `°gold fever," the camp grew until it was the fifth largest town in California in 1856. In that year, the name was changed to Oroville, Spanish for "City of Gold," and'the town became the county seat of Butte County. As a result of the mining activity, thousands of'Chinese moved to the area to provide labor. and services. By 1880 Oroville-had a Chinese population second only to San Francisco. Flooding and fire all but elic'inated'the "Chinatown, and there are only scattered remnants of Orov'ille.'s Chinese heritage. Most of the remaining.buildings are situated in the downtown area adjacent to the existing Oroville 25 historical area. Other historical 'sites include the Ishi Monument',. the Chinese Temple,; the Chinese Cemetery, the Jewish Cemetery and a 1•arge number of houses and buildings scattered throughout the Oroville urban area. The City does have a designated historical preservation district and a' historical and improvement area. The structures within that area.are controlled by Resolution 3402'which requires all structures buil,t,' remodeled,'rehabilitated or altered'_to conform to.the "Turn of"the Century" theme. The Development. Review Board is in change of overseeing this requirement. No known sites of archaeological or historical significance are located within the airport-plan area. 26 V. ENVIRONMENTAL IMPACT OF THE PROPOSED ACTION A. General With regard to the Oroville Airport Land Use Plan it should be stressed that impacts associated with this project relate to the -plan being designed to accommodate expected increases in air traffic at the Oroville Airport. Direct impacts would include changes in land use policies necessary to implement the Airport Land Use Plan, and similar changes in codes or standards. Indirect impacts caused by implementation of the Airport Land Use Plan could include those caused. by increased use of the airport due to its being a more desirable air facility due to implementation of the plan (i.e., a safer airport with less encroachment from urban development in critical areas such as clear zones and approach zones). The Oroville Airport Land Use Plan represents a relatively narrow range of goals, objectives and policies which are intended to guide the orderly growth of thee community contained within the airport planning area, to preserve navigable air space around the airport, to preserve the safety of people and property around the airport, and to mitigate impacts caused directly or indirectly by increased use of the airport. The policy statements that were developed to accomplish the above goals will have an effect on the environment. However-, these policies have been thoroughly investigated as to their impact on. the planning area. As'a result'of this review, it is felt that the proposed goals, objectives and policy statements, as contained in the Oroville.Airport Land Use Plan, are those that will best serve the Oroville community and the Oroville Airport. The adverse impacts that may occur as a result of a•proposed policy.have been mitigated as much as possible within the plan by -developing policies that mollify the anticipated adverse impacts.. For example, policies directing increased usage by business jets and other heavy aircraft to a particular runway will be offset by policies calling for reduced densities or no development in clear zones. In this plan, policies were developed to assure adequate riodse:•control and provision of adequate clear zones and approach zones to promote safety in aircraft operations. When the development of policies is not feasible or within the scope of the revised elements, mitigation measures have been identified wherever possible. B. Impacts and Mitigations 1. Geology/Seismicity Impact #1 All structures within the Oroville area are subject to seismic activity. This activity has affected structures in the past. Structural damage -to emergency facilities is possible. 27 Mitigation #1: None. All buildings in the airport''planning area must meet uniform building code requirements for seismically active areas. 2. Water Quality Impact #2: Increased use of the airport may.affect the quality of water used for domestic purposes due to increased use of solvents, oils,,etc., for maintenance, washdown, etc. Human encroachment into watershed areas impacts water quality by way of the following: reduced percolation, increased surface water runoff, increased sedimentation, human use of water storage facilities and man-made pollution entering ground or surface water. Mitigation #2: Independent. disposal of liquid wastes by "wet" industries or aircraft maintenance operations usijig large quantities of water or toxic chemicals on airport lands should be required. Aircraft washdown facilities must be provided with drainage facilities that will not permit pollutants to enter either ground or surface waters. 3. -Vegetation Impact #3A: .Vernal pools are Areas of Special Biological Importance (ASBI), as designated by the State Department of. Fish and Game. Residential and industrial developments north, west and south of the Oroville Airport have the potential'to destroy existing pools. Mitigation #3A: ,The areas containing vernal pools which are adjacent to the Forebay,and located in the•Oroville Wildlife Area have been designated as Grazing and Open Land 'and/or agricultural-residential,in order to limit the amount and types of development. The industrial area adjacent to'the Oroville Airport and the.Oroville Wildlife Area will be zoned L -I, Limited Industrial. The L -I zone restricts the amount and types of uses allowed, and subjects all new construction and major remodel projects to a development impact review. Drainage facilities will be required to meet state and local guidelines. Impact #3B:.Residential development. adjacent to the Afterbay may affect its use by,wildlife Mitigation -#3B: One -acre minimums in -conjunction with health requirements for septic systems and on-site,wastewater disposal will significantly limit the amount of,residential development that may occur and is therefore semi -self-limiting. 28 4. Air Quality Impact #4: Increased aircraft operations, automobile traffic generated by aircraft users accessing the airport, and increased industrial uses at the airport,`will increase the potential for increased air pollution at the airport. Mitigation #4: None. Automobile emissions will be controlled by the state emission control standards. Development on airport lands will.be required to adhere to the Butte County Non -Attainment Plan and to meet the requirements of the Butte County Air Quality Control Board. Potential increases in aircraft emissions are not expected to be significant because'of the relatively small amount, of time actually operated within the airport planning area, and the altitude at which most emissions occur. 5. Land Use Impact #5: Airport clear zones have been designated pursuant to Federal Aviation Agency Guidelines. Most of the clear zones are under private ownership.. The designation effectively minimizes the allowable uses of the property in order•to preserve the public health and safety. In the same instance, the designation clearly reduces the value of the property to the current -owner if the public health and safety are disregarded.' Mitigation #5: The City should immediately acquire easements or title to the clear zone sites.. The Federal.Aviation Administration will assist in.the funding and acquisition of clear zone areas. 6. Noise Impact #6:. The proposed extension of the Oroville Airport runway, which may be necessary to accommodate commercial air traffic will also increase noise in -residential areas located within proximity to the runways. Increased intensity of use of the airport will also contribute to an increase in noise. Mitigation #6: The impacts created by noise -producing uses may be limited through the enforcement of the City's noise ordinance. It is recommended that the City review the existing noise ordinance in order to ensure adequate mitigation of aircraft -related noise is accomplished. Similarly, the County of Butte should adopt a noire ordinance implementing the Noise Element of the Butte County.General Plan. The ordinances should -contain noise attenuation standards for.all occupied' buildings-, especially residential buildings. 29 7. Circulation Impact #7: The impact on circulation will be significant due,to the expected increase in industrial/commercial development of the airport property. Development adjacent to the Orov.ille Municipal Airport may adversely affect future airport flight operations. Also, the extension of runways and the expansion of airport services may affect the health and safety of future area .residents. Mitigation #7: The industrial -related sites adjacent to the airport should have zoning designations which limit the types of allowable industrial uses to those that are compatible with airport uses. The residential area located northeast of the airport is already partially developed. Any further development should be carefully reviewed as to the impact that airport operations will have on health and safety, with proper mitigation measures imposed. The rural residential area southwest of the airport has been subdivided into 10- to 40 -acre parcels. Attempts are being made to further subdivide these parcels. Since these parcels have not yet been developed, the City and County should prepare definitive development criteria as a part of the proposed airport environs plan in accordance with state and federal regulations. It is essential that the City coordinate efforts with responsible County and State agencies. 8. Public and Quasi -Public Services Power Impact•#8A: Construction of a -hydroelectric generation plant by the , State Department of Water Resources has been abandoned.' The power plant would have been located on the Thermalito Aft,erbay outlet, southwest of the airport. The proposed project included 34.5kv.electric transmission lines to be located within 4,500 feet of the runways. Although the State has abandoned the project, the site is available for other agencies or private firms to construct a similar power plant. Mitigation #8A: The site should be monitored by.,the City and County to assure that such construction and location of -transmission lines do not have a detrimental effect on airport operations and development. Impact #8B::'.:.There is an existing above -ground power/utility line located along the east -west access road in the Afterba.y Estates subdivision south of the airport and in line with'Runway 1-19. If that 'runway is extended to the south as planned, the power line will be within the*FAA Part 77 clear zone. 30 Mitip-ation #8B: At the time of issuance of 'building permits for building using.°said utilities, the County and/or i;ity should require the utilities to be placed underground. 9: Development Trends Impact #9: Development (especia•lly.residential) has slowed significantly since its peak in 1971, but is beginning to increase again. Potential development pressures exist in Thermalito and to the south in Afterbay Estates. Mitigation #9: Require avigation-easements-to be granted to the, Oroville Airport by all new development within the Orov'ille'Airport plan area and within the 55dB'CNEL noise areas. The avigation easements should address all potential impacts to•air traffic,including noise, vibration, fumes, dust, fuel particles, electrical interference, height limitations,' light sources, and reflective surfaces. 31 VI. ADVERSE ENVIRONMENTAL IMPACTS WHICH CANNOT. BE AVOIDED The proposed project-will.result in several significant adverse impacts, many of which will be reduced by plan policies, implementation.measures and/or mitigation measures. The* projected growth within.the planning area is such that total mitigation of adverse impacts ds not feasible. The unavoidable impacts of the, proposed project a�'summariied'as, follows: There will be an increase in the amount and velocity -of water runoff which wi-11 .increase erosion and. -sedimentation. There may be long-term degradation of surface and groundwater quality. There will, be an•.incr>.ease in noise levels due to increased vehicular movement, airport use and industrial development. There will be an increased demand for public facilities and services.. The current characteristics of the Oroville.life style may undergo' change as a result of increased use of the airport.-.. Increased use of all runways may degrade the quality of habitats in the wi.ldlife.ar-ea to the southeast of the airport and the.Afterbay.' to the southwest. 32 VII. ALTERNATIVES TO THE PROPOSED ACTION A. No Project As required by state law, the "no project".alternative must be considered. Adoption of this alternative would leave the airport with no Land Use Plan. Public Utility Code Section 21675.requires City.and County General Plans to be consistent with the Airport Land Use Plan. Furthermore, no zoning ordinance or building regulation, General Plan or Specific Plan within the planning boundary can be adopted without first being referred to the Airport Land Use Commission to determine consistency with the Airport Land Use.Plan. If no Plan has been adopted, no finding of consistency can be made. B. Modification of Proposed Plan; Runway Length The plan as proposed provides for the extension of Runway 1-19 from 5925 ft. to approximately 7025 ft. This extension would place the FAA Part 77 clear zone over all or part of 12 lots of the Afterbay Estates subdivision, severely limiting usable area on 8 of them. If the provisions for the runway extension .are eliminated, then only 7 lots are affected, and only 5 severely. These figures are based.on retaining clear zones specified for precision approaches. Other advantages of this alternative are that the runway threshold would not be moved closer to the hilltop to the southwest thereby increasing. the vertical clearance from the bottom of the approach surface to ground level from approximately 5 to 25 feet (depending on final runway elevation) to approximately over 40 feet. Also, if the runway extension is to be of the same gradient as the rest of the runway, an earth fill approximately 20 feet high will be required. Such extensive grading could have significant effects on erosion, drainage characteristics and aircraft safety. Disadvantages of this alternative are that Runway 1-19 would remain 5925 ft. long, which could limit future use by larger commercial'aircraft. C. Modification of Proposed Plan; Type of Approach The plan proposal calls for a precision instrument approach on the southwest end of Runway 1-19. The clear zone for precision approach is somewhat wider than; that for a non -precision approach clear zone and 800 ft. longer.' If a non -precision approach were specified, then 10 lots of the Afterbay Estates subdivision would be affected, 6 severely, instead of 12 and 8, as discussed in Alternative B, above. If a non -precision approach clear zone is specified for the existing runway (deleting the provisions for runway extension as in Alternative B), then.the number of lots affected drops to 3, with only 1 severely limited. It should be noted that under this alternative, none of the affected lots would be 33 VIII. SHORT TERM USES VERSUS LONGTERM PRODUCTIVITY The adoption of the Oroville Airport Land Use Plan and the implementation of the plan by the City.of,Oroville and Butte County .through General Plan revisions and the adoption of appropriate zoning will.result in a small reduction of the amount of Land planned for industrial and rural residential uses. The affected areas are those located in.th•e clear zones. In contrast, the Airport Land Use Plan is intended to'protect the airport from incompatible surrou°nding uses.'and-to.promote the, -provision of improved services and facilities at the airport. A well -protected airport providing services ?nd facilities better than those now available will stimulate commercial and. industrial growth in the area and, as a result', residential growth•.will increase. 35 IX. GROWTH -INDUCING IMPACTS�OF THE PROPOSED ACTION The adoption of the Orovi'lle Airport Land Use Flan will foster growth in a number of ways. Encouraging the growth and.development of industrial -and commercial. areas by providing an adequate, desirable airport will facilitate. increased.residential development within the entire area by generating' increased need. Limiting residential densities,in areas subject tij,hgh noise levels, thereby assuring that residential units are located in a good environment, may attract additional populations. The provision of an efficient and safe airport for sport flying will add to the area's attractiveness. The proposed Airport Lane Use Plan -was not designed specifically to encourage growth in the Oroville area,•but to provide adequately for anticipated increases in airport activities. Providing for expected increases will encourage additional commercial and industrial activity. Jobs created by such additions wilt attract additional.population, which will in turn add to the use of the airport. Cumulatively, provision of a safe,.well-planned airport will be' growth -inducing. 36 X.. ORGANIZATIONS, AGENCIES-, DOCUMENTS AND PERSONS CONTACTED City of Oroville, Public Works Department,.April-May, 1985 City of Oroville, General Plan Revision, February 1983 Butte County, General Plan Land Use Element, revised March 1984 Airport Land Use -Planning Handbook, Department of Transportation, July 1983 Department of Transportation,,Aeronautics Division, May -June 1985 City of Oroville, General Plan Update for the Oroville Municipal Airport, preliminary draft, March 1985 City of Oroville, General"Plan for the Oroville Airport., June 1973 U.S. Department of Transportation, Airport Land Use Compatibility Plannin'g,.AC 150/5050-6, 1977 Butte County General Plan, Noise Element, March 1977 United States Census•Bureau;, Census Data 1960, 1,970, 1980 State of California, Department of -Finance, population projection State of Californ'.a, Department of Finance, population estimates Co,unty of Butte, Special Census,'1975 County of Butte, 1985-2000.: Population, Employment; Land Use Report, March 1.982 Butte County General Plan, Circ.ulat'ion Element, 1984 State of California, Department of Fish and Game,.' -Bob Mapes,'.March 1985 State of California, Department 'of Park's and Recr.eation,,Hal Bradshaw, March 1985 Butte County Zoning Maps, 1985 City of Orov,ille Zoning Map, 1985 State of California, Government Code', Division of Aeronautics, Subchapter 6, Noise'Standards, 1979 37. PLUMAS ' NATIONAL Backs .. FOREST dLake 70 MENDOCINO c Poradise \�,p m NAT/ORAL .:' 70 �pC Fepltle/ p FOREST ins ChiCO Orovil/e Res. Res. Fk. Reno 5 OROVILLE ' rhermolifo R I 3 AI/erboy Collin s(r Yube . 70 Lake C Ukiah 0 Yuba Marysville C&SOn Cl/y o City Auburn Clear •. Res. ELDORADO Lake NATIONAL u3 FOREST Lake Sonoma 'Folsom - Lake _ ,p \ a Coke woodlond ' 6errye sso SOcromenlo o Sonlo Roso Vocovi lle ci %0 s C) Son Socre ' . Rofoel YOSEMITE Be/ke/P $/OCk10n NAT/OVAL PARK Ook /ond Fr.oncisco' 17 550 "byword Son MOleo b • �1 I ZZ ee • ®�®Y /iL'� ��/ ♦ �® ice. ��� : • .: . 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LEGEND ^. •• AC AIKEN CLAY LOAM SI SIERRA SANDY LOAM \ ' AO ANITA CLAY ADOBE Tg TUSCAN GRAVELLY CLAY LOAM WYMAN GRAVELLY LOAM INE SANDY LOAM (] � \ .• Cv COLUMBIA VERY r Cg :OkNING GRAVELLY SANDY LOAM WWI WYMAN LOAM HS `+ONCUT SANDY LOAM Pd PLACER DIGGINGS HI HONCUT LOAM Sc SCABLAND KI KIMBALL LOAM T TAILINGS �. + -- • 1 I Rq REDDING GRAVELLY SANDY LOAM Rb ROUGH BROKEN AND STONY Rf ROCKLIN FINE SANDY LOAM LAND R,r A sc Ac NIX Pd Rb Rb AVE Rbc; A i RbCg tAc 100, Rg 1 l °y� �� ) -°- 1 � - _ r��� f.� .. fry';:-.:_�...=a,; � _.. q� I ^-' %• � V<•� _ _ � .. _ S'� 1 :° �4• ` � n.1�,r.� f1 `/ T _� "`�• J f _ 1, ti Jr ` s - t l ; Rb Val R i l,,, 1.• y r .. f• -.... -- � ' � •---� .. - . ..moi .. -- .. Rf 16 i Kf Aj �wl R:` "4s`' ( F �C✓ f I/%� moi' ti } _ _ ( s < Cv K I� .�_ - y. H'I �, ,. :c ., _z� (_q��q— ` \.� -SI �=_ _ � �' r4 li • ,1 i• R I \� '•� '' �- ` W ". t' ,mil" tLS.L . , �/ • .�. Ac . ter--.. ;-'-��_- sl Rbf\`�.�� fJ I�. J ° \ li ca ! �= - �- ? }j / J rim `• ��/ r C ' JI Rg 37tCv�- Rb _ �Pd �, , �i /� j i►t Rq i 1 Rb % 0 00, P�Arr�/rrG ✓gPr. Appendix 4 CNEL Contour Worksheet FI iaht Track n 1 Takeoff X or Landing X Date 5 11 83 - Total Equivalent Jet Aircraft (J) I 1.7 1.S Propel ler Number of Flights(') Type_ Weighted Equivalent Weighted Total ( ) Aircraft Day Eve. Night Tota 1(2) Aircraft Factor(3) Equivalent Flights Jet ND NE NN N FT or FL NT or NL ......-... 2 -Eng. Turbofan (DC -9, 737) 0.8 ,0.2 0 1.4 1.0 � 1.0 1.4 - - - 1.4 --- 3 -Eng. Wide Body - - - 50 (L-1011, DC-10) 500-2000 HP Business Jet 1 0. 0 1.0 1/3-'- 1/10 0.35 0.1 Business Jet 1 Falcon 3 Turboprops - Total Equivalent Jet Aircraft (J) I 1.7 1.S Propel ler (Total Engine Horsepower) ......-... < 200 H P . i .. ass med _ 50 200-500 H P - - - 50 500-2000 HP > 2000 H P--- 3 Turboprops Total Equivalent Propeller Aircraft (P) 50 50 S1. 5 --- Total Equivalent Flights (J + P) S1.7 - 2.9% Percent Jet Flights 100xJAJ { P) 3.3% CNEL Closure Distance, ft(5) 65 6400 3600 70 Notes (1) Day =1 AM-7PM; Evening= 7 PM -10 PM; Night == 10 PM -7 AM (2) Weighted number N = ND + 3 NE + 10 NN (3) See Table 1 for FT or FL for jet aircraft and Table 2 for propeller aircraft �4) NT ='FT times N (or FT x N). Similarly, NL = FL x N. (5) For closure distances, see Figure 2 -for takeoff flights and. Figure 3 for landing flights. (Use: Table 3 forzero jet operations) CNEL Contour Worksheet Takeoff X or Fl iQht Track 1 g : Landing X. DateaL11-/$ 3 Aircraft Type Number of Flights(1) Weighted Total(2) Equivalent Aircraft Factor(3) Weighted Total Equivalent Flights (4) Eve. Night Jet 2 -Eng. Turbofan (DC -9, 737) 3-Eng. Wide Body (L-1011, DC-10) Business Jet --'_ M3. NE NN N FT or F.L NT or NL ---- 1.0.. 0.'8 -------- -_0 _ 0 .' ----0--- 5.6 ----- 1.0...._._ 11. 0, --_...--- .._1�3._.__. 1.0 ---- - 5.6 _. --- - -- - -- ------=- 5..6 ---- ----- ..... Business Jet 1 Falcon Total Equivalent Jet Aircraft. (J) 5.93 5. 7 Propeller (Total Engine Horsepower). < 200 HP - 200-500 H P 34 2 - --- 50.0-2000 HP— > 2000 H P 109 - -- 27 _- 0 190 _ 1.0 1. 0 ------ __.14 0 _— ------- n-- _ - - - Total E uivalent Pro eller Aircraft (P) 190..190 Total Equivalent Flights (J + P).- - _ 195...93 Percent Jet Flights -100 x)/(J + P) 3..0% CNEL Closure Distance, ft(5) 2.9% 65 7900 7000 70 Notes (1) Day = 7AM-7PM Evening = 7PM- 10 PM; N-ight = 10PM-7AM (2) Weighted number N = ND + 3 NE + 10 NN (3).5ee Table 1 for FT or FL for jet aircraft and Table 2 for propeller aircraft (4) NT =,FT times.N (or FT x. N). ,Similarly, NL = FL x N (5) For closure distances, see Figure 2 for takeoff flights and. Figure 3 for landing flights. (Use'Table 3 for zero jet operations) . CNEL Contour Worksheet Takeoff X or Fliaht Track 30/12. Landing, X Dates/11/83 Number of Flights(') Aircraft Type DayJ Eve. Night Weighted Tota 1(2) Equivalent Aircraft Factor(3) Weighted Total; ,(4) Equivalent Flights Jet 2 -Eng. Turbofan (DC -9, 737) ND NE NN N FT or FL NT or NL __... - ------- ._:_... --- ... _ ......... - ----- 3 -Eng. Wide Body (L-_1011, DC-10) — - --- -- - ---- -- - -- Business Jet -- 134 _ 134 0 134 0 CNEL Closure Distance, ft(5) Business Jet 65 2720 1S90 70 Total Equivalent Jet Aircraft (J ) Propeller (Total Engine Horsepower) < 200 HP _ 200-500 H P -- 500 -2000 -HP— > 2000 H P 90 90 8% 8 2 2 134 1.0 1.0 134 134 Total Equivalent Propeller Aircraft (P) __ Total Equivalent Flights _ (J + P) — Percent Jet Flights 100xJAJ + P) 134 134 _ 134 0 134 0 CNEL Closure Distance, ft(5) 65 2720 1S90 70 Notes (1) Day 7 LSM-7PM; Evening = 7 PM -10 PM; N fight = 10 PM -7 AM (2) Weighted number N = ND + 3 NE + 10 NN (3) See Table 1 for FT or FL for jet aircraft and Table 2 For peopeller aircraft (4) NT = FT times N (or FT x N). Similarly, NL = FL x N (5) For closure distances, see Figure 2 for takeoff flights and Figure 3 for landing flights (Use Table 3 for zero Jet operations) Al'H:NDI \ 5 COUNTY OF BUTTE ENVIRONMENTAL CIIECKLIST FORA (to be completed by Lead Agency)' ile 85-40 Y'Og 85-02-01-03 I. BACKGROUND Al' Various II DATF. 1. Name of proponent _,Oroville Airport Land P1 an 2. Address of proponent and representative (if a{')plicable) Butte County Airport Land Use Commission. 7 County_._ Center. Drive Oroville,_CA 99_6-5 — 3. Project description _ The Orov_:LlLe Air_pQr_t__Enyir.ans MANDATORY FINDINGS 01: SIGNIFICANCE. YES MAYBE NO a. Does the project have the potential -to degrade the quality of the environment, substantially reduce the habitat of a. fish or wildlife species, cause a fish or wildlife population to drop below self- sustaining levels, threaten to eliminate a plant or animal conunun.ity, reduce the number or restrict the range,of a rare or endangered plant or animal or eliminate important examples of the major periods of California`hi.story or prehistory? b. Does the project have the potential to achieve short-term benCl'lts t.0 t.hC dCtrilllent Of long-tel'lil, environmental..goals'? (A short-term impact on the environment is one which occurs in a relatively brief period of time while long-term impacts will. endure into the 11tUI—C.) C. Does the project Have impacts which are individu- ally limited, but cumulatively considerable? (A project may impact on two or more separate resources where the impact on each resource is relatively small, but where the effect of the total of -those. impacts on the environment is significant.) d. hoes the project. have environmental effects which Will cause substantial adverse effects on human beings, either i.lirectly or indirectly'? _ DETERMINATION ('ro"be completed by the Lead Agency) On the basis of this initial evaluation: _ 1'/WE find the proposecl project COMA) NOT hav'e'a significant effect on the environment, and a NFGATI VE DECLARATION will be prepared.. I/WF-. find that although the proposed project could have a signifi- --- cant effect on the environment, there will not be a significant effect in this case because the MITIGATION MEASURES described on the attached sheet have been added to the project.. A NEGATIVE .DECL,ARATiON will be prepared. I/WE find the proposed project MAY have a significant effect on tfie envi_ronna fent, and n ENV1RONMF:NTAI, IMPACT RIiPORT is required. February 27,_1985 (:Olf1' OF BUTTE, 1'LANN1 NG DEPARTMENT David R. Hironimus Associate` Planner Reviewed bv: • IV. ENVIRONMENTAL IMPACTS_ (.Explanations of all "yes" and "maybe" answers are required on attached sheet(s)) YES 'MAYBE NO 1. EARTH. Will the proposal result in significant:, a—Unstable earth conditions or in changes in, geologic substructures? JL b. Disruptions, displacements, compaction or overcover-ing of the soil? X C. Change in topography or ground surface relief features? X G d. Destruction, covering or modification of any unique geologic or physical features? X e.- Increase in wind or water erosion of soils, either on or off-site? X f. Changes in depo'sition,or erosion of beach sands, or changes in siltation, deposition or erosien which may modify the channel of a river or stream or`the bed.of the ocean or i< any bay, inlet or lake? g. Loss of prime agriculturally productive soils outside designated urban areas? h. Exposure of people or property to geologic .hazards such as earthquakes,, landslides; mud - Slides, ground failure or.similar hazards? Xr- 2.. A.IR. Will the proposal result.in substantial.: a. Air emissions or deterioration of ambient air quality? %( b. The creation of objectionable odors, smoke or fumes? 7< c. Alteration of air.movement, moisture, or.. temperature; or any'change in climate, locally or regionally? 3. WATER. Will the proposal result in substantial: a. Changes in currents, or the course or direction of water movements in either X marine or fresh waters? b. Changes in absorption rates, drainage patterns, or the rate and amount of surface runoff?. X c. Need for off-site surface drainage improve- ments, including vegetation removal, channel- ization or culvert installation? X d. Alterations to. the course or flow of flood waters?. e. Change in the amount of surface water in.'any water body? % f. Discharge into surface waters, or in any alteration of surface water quality, including but not limited to temperature., dissolved ozygen or turbidity? g. Alteration of the direction or rate of flow of ground waters? h. in the quantity of ground waters, .:Change either through direct additions or with- drawals, or through interception of an ``aquifer by cuts or excavations? X i. 'Reduction in the amount of water otherwise 'available for public water supplies? j. Exposure of people,or property to water related hazards such as flooding? -2- YES MAYBE NO 4. PLANT LIFE. Will the proposal result in substantial: a.Change in the diversity of species, or number of any species of plants (including trees-, shrubs, grass, crops, and aquatic plants)? _ b. Reduction of the numbers of any unique, rare or endangered species'of plants?. _ c. Introduction of new species of plants into an area, or in a barrier to the normal replenish- ment of existing species? _ d. Reduction in acreage of any agr-icultural crop? S. ANIMAL LIFE. Will the proposal result in substantial: a. Change in the diversity of species, or numbers of any species of animals (birds,'land animals including reptiles, fish and shell fish, benthic organisms or insects)? _ b. Reduction in the numbers of any unique,. rare or endangered species of animals? _ C. Introduction of new species of animals into an area, or result in a barrier to the migration or movement of animals? _ d. ,Deterioration to existing fish or wildlife habitat? 6. NOISE. Will the proposal result in substantial: a. Increases in existing noise levels? b. Exposure of people to severe noise levels? 7. LIGHT,AND GLARE. Will the proposal produce signi icant light and glare? 8. LAND USE. Will the proposal result in a su stantial alteration o•f the present or planned land use of an area?. 9. NATURAL RESOURCES: Will the proposal result, in su stantial: a. Increase in the rate of use of any natural resources? b. Depletion of any non-renewable natural resources? 10. RISK:OF UPSET. Will the proposal involve:.. a. A ris o explosion or the release of hazard- ous substances (including, but not limited to, oil, pesticides, chemicals or radiation) in the event of an accident or upset.conditions? b. Possible interference with an emergency, response plan or emergency evacuation plan? 11. POPULATION. Will the proposal alter.the location, distribution, density, or growth .rate of the human population 12. HOUSI.NG.. Will .the proposal affect existing:.,housing, or c.r.eate a demand for additional housing?:.-•. -3 x X x x Kc X X YES MAYBE NO 13. TRANSPORTATION/CIRCULATION. Will the proposal result in: a. Generation of substantial additional vehicle movement? X b. Effects on existing parking facilitie$, or demand for new parking? C. Substantial impact on existing transportation systems? d. Significant alterations to present patterns of circulation or movement of people and/or goods? X e. Alterations to waterborne, rail or air traffic? X f'. Increase in traffic hazards to motor vehicles, bicycli�s-ts or pedestrians? iC 14. PUBLIC SERVICES. Will the proposal have an effect upon, or result in a need for new or altered governmental services: a. Fire protection? X b. Police protection9 k c. Schools? d. Parks or other recreational facilities? K e. �4aintenance of public facilities, including roads? x f.. Other governmental services? i< 15. ENERGY. Will the proposal result in: a. -Tse of substantial amounts of fuel :or energy? b. Substantial.increase in demand upon existing sources.of.energy, or require the development of.new sources of energy? X 16. UTIL.IT.IES.: :_.Will the propsal result in a need for new systems., or substantial alterations, to the following: a. Power or natural gas? k b. Communications systems? c. Water availability: d. Sewer or septic tank? X e'. Storm water drainage? k f. Solid waste and disposal? i 17. HUMAN HEALTH. Will the proposal result in: a. Creation of any health hazard or potential health hazard (excluding mental health)?-' 1C b. Exposure of people to potential he.alth hazards? 18. 'AESTHETICS. Will the proposal result in.the: o structi�on of any scenic vista or view open to the public', or will .the proposal result in .the 'creation of an aesthetically offensive site open to publdc- view? -4- YES MAYBE NO 19. RECREATION. Will the proposal result in an 'impact upon,thq quality or.quantity of�existing recreational opportunities? X .: 20. CULTURAL RESOURCES. a. Will the proposal result in the alteration of or the destruction, of, a prehistoric or historic archaeological site? ' b. Will the proposal result in adverse phys_cal or aesthetic effects to a prehistoric or "historic building, structure or object? >< c. Does the proposal have. the., potential to cause a physical change which would affect unique ethnic cultural values? x d. Will the proposal restrict existing religious or sacred uses within the potential impact area? V: DISCUSSTON OF ENVIRONMENTAL EVALUATION File # 85-40 See 'attachment -5- , DISCUSSION_OF_ENVIRDNMENTAL_EVALUATION File # 85-40 'This project is the formulation and eventual adoption of the Oroville Airport Area Land Use PlAn pursuant to Public Utility Code Sections 21674 through 21675. The proposed plan establishes planning boundaries around the Orbville Airport area of influence and sets forth appropriate land use including building height restrictions to the extent that such land is not already devoted to incompatible uses. While this plan may be reviewed and modified more often, the noise contours set forth in EAhibit 1 or as projected for airport useage .projected to`the.year 2000. TheUroville Airport has been in existence for many years, and ' adoption 'of'INi`s*plan will �have very few, if any, direct impycts on the environment. The following items discussed in the thecklist deal primarily with the plan as it relates to increased air traffi` over the years and airport improvements necessary to handle that traffic. 1b,c: The plan under consideration provides for increased commercial air traffic including small jet operations on -Runway 01 (the runway running from northeast to southwest). Increased use of this runway by larger, heavier aircraft may require extension of the runway to the southwest. The clear zone planned within this document assumes this ' .runway extension. The runway extension will result in considerable grading, leveling, paving and other overcovering of the soils. Any impacts associated with such a project would be.addressed at the time of the review of that specific project. ^' 2a,b: This plan provides for the increase in use of theairport by' heavier aircraft including multi engine and jets. Use of the airport by such aircraft will increase emissions which will deteriorate air quality in the -area and be objectionabfe due to reasons of odor and � aesthetics� , , 4d: If implemented, this plan will provide for the conversion of some agricultural Iand`into urban uses. These changes are alreadyprovided for in the existing General Plan adopted by both the City of Oroville and the County of -Butte. 6a,b: Increased Aircraft traffic provided for -by this plan will increaseexisting noise levels and expose people and existing homes to increased levels which may be severe on Mcasion. 7: A small ,ampunt of additional light and glare may`be produced -due to increased night operations of aircraft utilizing the airport. Appendix F - Page 6 .� . File 4 85-40 8: At the present time, the Butte County General Plan provides for Low Density Residential uses at the south end of the airport (up to 4 dwelling units per acre). If implemented, this plan will reduce those densities to 5 to 10 acres per dwelling unit. The north end of the runways of the Oroville Airport is presently planned for Low Density Residential uses. The City of Oroville indicates a clear zone area and an industrial area in the same location. The land in question is currently within the City limits of Oroville. Adoption of this plan will require similar changes in the Butte County General Plan to show clear zone areas and designations reducing the densityof human population within these areas. ` 10ar The in.creased air traffic provided for by this Plan will result a n �'AimiIar incre�se in risk of release of hazardous substances in the:cahe of aircraft accidents. The plan requires adoption of clear zones which should provide for adequate safety areas in case of accident. 11: See item 8. 12: Increase air traffic, as provided for by the plan, will effect existing housing in the area of high impact areas. 13a: -The plan provides for increased air traffic to the Oroville Airport. This would in turn result in increased vehicular traffic accessing the airport' 13c: The plan provides for expansion of the existing airport. 13e: Increased .air traffic utilizing the Oroville Airport may be required to alter traffic patterns in the area as development on the ground and air traffic become increasingly incompatible. 13fi Increased air traffic on Runway 12 may effect vehicular traffic on State Highway 162 where it crosses through the clear zone area just north if the airport`. Because of a displaced threshold this should not be! a significant factor. 14a,b: Increased utilization of the airport may require additional fire and police protection. 14d: The Oroville Pageant Riders Rodeo grounds is located on Oroville Airport property. ' Increased utilization of the airport may require new facilities which may eventually disrupt or displace the rodeo facilities. ` 14e,fiIncreased vehicular traffic accessing theAirport may require additional maintenance of public facilities including the airport buildilds themselves and road and parking facilities associated with them. Other governmental services including water and sewer services � may 41so rea ire additional maintenance or capacity. . Appendix F - Page.7 Fi 11 85-40 Increased use af the pirportwall ros_rtin an increased use of fuel or energy . dur i. nd flight operati ons and vehicular travel to and from the airport.. 1c>a9b;, At the present nt ti:mr�, no power or communication facilities are located abovecjrourid within the required r_1c=<a.r, :cine IidUaever, f the Kopt.hwesterly extension, of Runway 01/19 is accomylish4d, the clepr cane will i nc 1 ude an area where .ex i st i. ng power 1 i nes _ nd 'none 1 i nes _arca located aboveground, Extension of that -clear zone would require undergroWding of those utilities. Such undergr-c:unding should be accomplished shed as '.SiC.lon as practical as the 6x i st i ny vac:ant lots are bk..ti .l t upon o 1.9-. See item 14d. Appendix F Page 8 App I i. cant: Butte County Airport Acssessor_ ' s Parcel # Land Use Pl an Va is o u s 1... oto # 85-02-01-07!; File # 85-40 A. F'r_ct Descrpacn 1. Typeof Project: Adopt.i on- pf Airport Land Use Plann 2. Brief Desc_r•i pt i.on The Orovi l .l e Ai. r'port Environs 31 Location, All t_h at. pr_oper.'ty l pcated Within 1 ` to 2 miles of the Orov:i.:l. l e Airport. Centered on ' the airport, located appro ; i. mat.e:l. y -_; miles west of Highway 70, Gyri the south side of Oro Dam Blvd. Went. State Highway 162) 4. Proposed bensi ty of Development: N/A 5. Amount of Impervious Surfacing: "N/A 6. Access and Nearest:., Publ. i.c •.Road ts) : State Highway 162 7. Method of Sewhoe Disposal • N/A 93. -Source .of Water Supply, N/() 9e Proximity of Power Lines: in the area' 1P. Potential for further land divisions and development: N/A' B. EnvironmentalSetting Physical Ehy ronmena_ o 1. Terrain a. General Topograph:ig Character! Arer_a within the Planning boundtary generally f 1 at , val 1 ey land with some rol l i. ng hills and °:>(:]rT1E'•:' dredger tailings. .b. Slopes. 040%. C. Elevation:* Approximately 100 feet ASI_.. t o. '?00 Beer ASI._. d. Limiting Factors: None 2. Soils R. Types and (:;h_�rycteri.st.icsi General.'ly Reddi.nd and Rocklin foams, under -Lain by cobbles and clay deposits. Poor percolation rites, limited ag icultura.l use. b. l._i:mit_ing Factors: N Apoendix F,(a) File # 85-40 S. Natural HaTards.pf the Land ` a. Earthquake Zone: Moderate Earthquake`Intensity Zone VIII b. Erosion Potential: None to Moderate' . C. Landslide Potential: None dO Fire Hazard: Unclassified and H'derate e. Expansive Soil Potential: Generally high 4. Hydrology - a. Surface Water: `Th6rmalito AfterbAy, portions of the Featheb River, Thermalilo Forebay Power Canal, and ' miscellaneous dredger ponds within the Oroville Wildlife Area. ' b. Ground Water: Generally high groundwater due to the Thermalito Forebay and the ThermalitoAfterbay and the ' area around the Oroville Wildlife Area andFeather River. � C. Drainage Characteristics: Area generally drains to the Feather River to the southeast and the Afterbayto the southwest. d. Annual Rainfall (normal): 20 to 26inches per year e. Limiting ` Factors: None 5. Visual/Scenic Quality: Variable, generally good ' 6. Acoustic Quality: Generally good except near traffic / corridirs and the airport itself as well as under approach,and departure -zones. � 7. Air Quality: Generally good exceptduring times of _ agricultural burniQg 8. Vegetation: Native grasses, oaks, riparian vegetation near ` Feather River and the Oroville Wildlife Area. _ 9. Wildlife Hpbitat: Small birds and animals common'to the valley areas. Waterfowl associated with the Forebay, Afterbay and � � wildlife areas. ' ' .- 10. Archaeological and Historical Resources in the area: N/A 11. Butte County General Plan designation: Public, Commercial, 'i-owDensity Residential and Agricultural -Residential, also Medium Density Residential 12. Existing Zoning: A-?, A -R, P -Q, C-1, C-2, R-3, and R -C, AR -5 - and assorted City of Oroville zoning designations. 13. Existing Land Use on-site: Varied , 14. Surrounding Area: ` Al. -Land Uses: Varied, from agricultural to intensive urban uses. . / b. Zoning: Varied C. Gen. Plan designations: Varied d. Parcel Sizes:. Varied ` e. Populationz Population center of Oroville surrounded by suburban uses and agricultural uses. ' Appendix F (b) APPENDIX 6 t� APPENDIX 6 Q Z �•y ,- = G a c s L = xis o > r Z E•c �s 'o �� J = c •C � •C � O V V ,,. c ca a. g .E � O�> L Y 7 C •` y C •L d V �. ^ Y J V m V W V V V R Z _ I �3 9 L yC G C_ _ e C O C y o to ,� s y '; w 3_ Z E e? I c u to O • a C - I to C s • 'r O b W r OQ, . <Js . E E L c iA W-4 N - > M ee A � •r y 6 0.A01 � � a � •p . � 0 \ 1•� r V1 ''• Q O Q < � O ¢ e V �^ IF oil W ..J \/ /per ,X{y � • C > C .n is r jr Z �•y ,- = G s L o > O v ' Jc J = V c ca a. x .E � O�> L Y 7 C •` y C •L I C - V V �. ^ Y J V m V W V V R Z _ I c ca •y yC G C_ _ e C O C to ,� s y '; w 3_ Z E e? I c u to O • a C - I to C > - • 'r O b W r OQ, . . E E L c N - > � •r y � V V . G • APPENDIX 7 .c YEARLY AVERAGEOEQUIVALENT SOUND LEVELS IDE.N71FIED AS REQU1Sr—,E TO PROTECT THE PUBLJC HEALTH AND WELFARE WITH Ah kDEQUATc )AARGIN OF SAFETY Code: a_ Sin= different types of.acttviucs appear to be assoeated with different levels, tdentifi- =at.►or of a rruxunu,•n'levtl for acttvtty interference may be difficult except to those „jrc:urrutsne=s whets speech communication ma -=tUca actT'tty. Y. riYure D-2 for noise- 1-vcls as a function of distan= wtuch allow sausfactory communimuon.) 5• Based on lowest level. C. 6ase.d.only on teeartng ba. d. An L eq(g I of 75 dB maybe identified in these situstsons so long as the exposurt over the remaining IG hours per da•y is )ow enough'to rtzvlt in a ncgtrgiblc contribution to the 24-hour average, i.e., no greater than an L. q of 60 dB. r Notr Explanation of identified kvtl for huring boss', T-hc c"xposurt pcnod which rtsc �c hearing lois et the identified level is y period of 4-0 yew-.- Re earL Refers to encW rather than arithmetic ovxrag,m '" Indoor Ovtdoot To Protect To Protect Activity H e.arin g Lo= Activity H cs ri n g Lou hieuurt Inter- Consdc-a- Agunst Both Ef- _ Inter- Considcr-a- Again t Both Ef- fertn= tion fecu (b) fct-cntx tion fecu (b) Residential with Out- Ldn 45 45 55 55 side Space and Farm Residences �4 70 70 Residential with No L -an 45 45 Outside Spa= Ley(24) 70 Commcrdal I Leq(24) I (a) I 70 I 70(c) I (a) 70 I 70(c) lnseeie Transportation 4q(24) I la► I 70 I (a) I 7 0(c) (a) I I Induif ial I L tq(24xd)I 70 HospitalsI L-dn 45 45 55 55 . , _...._� 4q(24)70 l 70 Educaitonal I L-co(24) I ` 4-, a5 a. S5 SS L tq(24)(d) 70 I I 70 Rc�eationaI Arises L-cq(24) (a) I ( 70 I 70(c) I (a) 70 70(c) Farm Land and L-cq(24) (a) 70 70(c) Ge"tfeml.UnpopuiateC Land. Code: a_ Sin= different types of.acttviucs appear to be assoeated with different levels, tdentifi- =at.►or of a rruxunu,•n'levtl for acttvtty interference may be difficult except to those „jrc:urrutsne=s whets speech communication ma -=tUca actT'tty. Y. riYure D-2 for noise- 1-vcls as a function of distan= wtuch allow sausfactory communimuon.) 5• Based on lowest level. C. 6ase.d.only on teeartng ba. d. An L eq(g I of 75 dB maybe identified in these situstsons so long as the exposurt over the remaining IG hours per da•y is )ow enough'to rtzvlt in a ncgtrgiblc contribution to the 24-hour average, i.e., no greater than an L. q of 60 dB. r Notr Explanation of identified kvtl for huring boss', T-hc c"xposurt pcnod which rtsc �c hearing lois et the identified level is y period of 4-0 yew-.- Re earL Refers to encW rather than arithmetic ovxrag,m '" July 17, 1.985. Re: Oroville Airport Land Use. .,Plan File No. 85-40 To Whom. It May Concern:" The enclosed (Draft) Environmental Impact Report on the above-named application is,for your. information And-review. A Notice of ,Completion' of the Draft,. ETR has been -filed with the Butte County. Clerk and the Office of Planning'And.: Research. Comments concerning' the' material, contained in the Draft EIR are solicited." Such. comments can beisubmitted to the'Butte County Planning Department at-the.above address until the close of the 30-day period of -review 'ofi Friday,. August 1.6, 1985. Should you, have, any Questions, please'contact this. department: Sincerely David R. Hironimus Associate Planner DRH/ ss Enclosure r... gt— �® LAND 0 I NATURAL WEALTH AND BEAUTY PLANNING COMMISSION c y, 7 COUNTY CENTER DRIVE — OROVILLE, CALIFORNIA 95965-3397 PHONE: 534-4601 July 17, 1985 Re: Oroville'Airport Land 'Use Plan File No. 8.S-40 To Whom It May.Concern: The enclosed.(Draft) Environmental Impact Report on the above-named application is for your information and review. A Notice of Completion of the Draft EIR has been Tiled with the Butte County Clerk and the Office oil Planning and Research. Comments concerning the material "contained inthe Draft EIR are solicited." Such comments can be submitted to the Butte County Planning.Department.at the above address until the close of the 3'0. day period of review on Friday, August 16, 198S.. Should you have any -questions, please contact this department. Sincerely, David .R': Hironimus Associate.Planner DRH/ss'.: Enclosure July 17, 1985 t olu LAND OF NATURAL WEALTH AND BEAUTY PLANNING COMMISSION. 7 COUNTY CENTER DRIVE '-. oROVILLE, CALIFORNIA 95965-3397 PHON E:, 534-4601 Re: Oroville Airport Land Use Plan File No. 85-40 To Whom' It N1ay. Concern: A Draft:Enviro.nment.al Impact Report (ETR) has.been prepared for this project and. th'O' document published. To avoid any unnecessary costs, we are not distributing this document to.pr.ivatc indiv.i.duals or <_lunlicatc copies to public agencies. Copies of the above-mentioned Draft Environmental Impact -Report -are available for public review at the Planning Department, 7 County Center Drive, Oroville; the Butte County - - Library.branches; Chico State University and Butte College Library. There s'a charge of $10.70 for the ETR. If"you would like a copy of.the EIR, it will be sent to you upon receipt by this office of $10.7.0 plus postage of $3.16 icor a total of $13.86. Should you have any questions, please contact this department. Sincerely, David.R'. Hironimus Associate Planner DRH/ss July.? 17, 1985 Re: Oroville Airport Land Use Plan File .No. 85-40 To Whom It May Concern: A Draft Environmental Impact Report.(EIR) has been prepared for this project .and the document -published., To avoid any unnecessary costs; we are not distributing this document to private individuals ,or. duplicate `co.p.ies toy public agencies. Copies of the above=mentioned:Draft Environmental Impact -Report are availab.le for publ'ic"review at the Planning, Department, 7*Courity Center 'Drive,, Oroviile; the Butte County Library branches; Chico State University and Butte'College Library.. There is a'charge of $10.70 for the EIR. If. you would like a copy of the EIR, it will be sent to you upon receipt by this office of $10.70 plus postage of $,3.16 fora total of $13.86`. Should you have any questions, please contact.this "department. Sincerely; David R-. ` Hironimus Associate Planner DRH/ss TABLE OF CONTENTS I . INTRODUCTION. . . ... . . . . . . . . . . . . 1 I I . BACKGROUND _. . , . ' : 3 III. DESCRIPTION, -OF THE PROJECT AND.ITS LOCATION . . .. , 4 " A. General _ .. .. 4 B. Location and Access, : . . . . . . . 4' C. Summary of, -Policies . . . . :. 4 I V . DESC R I„PT I ON OF .THE, ENVIRONMENTAL: SETTING ” '. 8 A. General B: Natural Environment ,.. . . . . . . . . 8 1. Soils " . . " 8 2. Geology . : . .. . ` .. . . . . . . . . . 9 3. Seismic Activity .; .. 9 4. Hydrology . . . . . . . . . . . . ... . 9 5:" Water Quality . . I ... . . . . 10 6.'.: Vegetation '. . . . . . " . . . . . . . 1.0 7.7 Wildlife 8. Climatology/Air'Q'ual�ity" ., 12 C. Cultural Environment . . 14 1. Population and Land Use . . . . . . . . .' 14 2: Noise . . . . ... . . . . .' . . 15 3. Circulation . ." . . . . . . .. ... 19 4; Public and Quasi -Public Services 19 5, Development Trends .' 22 6.' Housing Availability and,Supply . . . . . . . 23 7. Economic Trends . . ... . . " 25 8, Archaeology/History . . . . . . . .. 25 V. 'ENVIRONMENTAL IMPACT OF THE PROPOSED ACTION . 27 A.' General . . . . . . . . . .' 27 . B. Impacts and Mitigations . . . . .. . 27. 1: Geology/Seismi'city . . ... 2. Water Quality . . . . . . . 28 3. Vegetation '. .•.- �. 28 4. Air Quality 29 5., Land Use . . .. .• . . . . . 29 6,. Noise : .. . . . . . . ... ... . 29 7. Circulation. .. . . . . .' 30 8. Public and Quasi -Public Services . . . .. . . . .... 30 *- 9. Development Trends . . . . . . . . . . . 31 VI. " ADVERSE ENVIRONMENTAL IMPACTS WHICH CANNOT BE AVOIDED. ... . . . . . . . . . . . . . .. ... .32 ; VII. ALTERNATIVES TO THE PROPOSED ACTION'" 33 A. No Project . , . .. 33 B. Modification of Proposed.Plan; Runway. Length ,33 C. Modification of Proposed Pian; Type of Approach 33 VIII. SHORT TERM USES VERSUS,LONG TERM PRODUCTIVITY . . •. . . 35 IX. GROWTH-INDUCING',IMP.ACTS OF THE PROPOSED `ACTION . .36 X. ORGANIZAT.IONS,. AGENCIES, DOCUMENTS AND PERSONS • r { CONTACTED . . . . . . . . . . . . . . .. .. 37 XI. COMMENTS RECEIVED'AND RESPONSES TO COMMENTS ". 38 APPENDIXES • '. 1. Area Map ' 2. Planning Area Map 3. Soils Map 4. Noise Calculations 5. Initial Study 6,. Effects of Noise on People �•: -7.' Noise Levels Related to Health .8. Land Use Compatible with Noise ,' W I,. INTRODUCTION The purpose of this report is,to inform.governmental decision -makers and the general public of,the•significant environmental impacts which may occur if the proposed Oroville Airport Land Use Plan,.(ALUP)'is adopted by the Butte County Airport Land Use Commission and if the Butte County General Plan and the City of Oroville General Plan are made to conform. This draft Environmental Impact Report has been prepared in accordance with the requirementsof the California Environmental Quality Act and the State Environmental Impact Review Guidelines: Prior to approval of the Airport Land Use Plan,,the Butte County Airport Land Use Commission shall review this draft, the -comments received and the'responses to the various comments, and then certify.tha.t the information has been considered. An Environmental Impact Report (E.I.R.) is required for the proposed,. Airport Land Use Plan because the plan would allow, encourage and guide substantial development which could affect the Oroville Airport and the lands in the vicinity,, and mariy aspects of community life in the area. This E.I.R. not only identifies the unwanted negative changes which could take place in the future but also indicates the alternatives, actions arid.conditions.which would avoid, minimize or reduce the significant impacts identified. ' Airport,land use plans establish a framework of policies and standards for future development, but they do'not specify all'of the details of that'development and they cannot predict which development -will actually' take place nor when. Consequently, this report'must speculate on , potential impacts in a.general manner and is not as exact as an impact analysis for'a specific subdivision, rezoning or construction project. Future.environmental assessments for individual projects can reference any part -of this E.I.R. or otherwise use the information contained within... Any mitigation measures,suggested herein will also guide the development of specific measures to be'applied.to individual projects whose approval,is subject'to environmental review requirements. This Airport,Land Use P1an-E.I.R. can.be most beneficial to decision -makers focusing on future decisions on proposed development projects within the area by analyzing cumulative,.area-wide and long-range impacts which are difficult to assess on a project -by -project basis. It should be'noted that this impact report does not consider the environmental impacts'of specific projects which may be subsequently implemented in compliance with the plan, nor does it exempt any such projects from complying with the requirements of CEQA. The objectives and policies of the Oroville Airport Land Use Plan are directed towards orderly growth of' the airport and its planning area, and to assure that development occurs in a manner and location.that is consistent with important social, economic and environmental goals: II. BACKGROUND In accordance with state law,,enacted to attain.compatible land use surrounding airports, and requiring each county to create an Airport. Land Use Commission (ALUC), the Board of Supervisors and the Butte County City Selection Committee, in accordance with California Utility Code Section 21670 et seq., have appointed said Commission. `State.law requires such Commissions to develop Airport Land Use Plans. It is optional to include other general aviation or military airports,.in such plans. In this Airport Land Use Plan, the.City'of Oroville'public airport is addressed in detail. This plan is intended to complement and enhance the local comprehensive planning process of agencies responsible for the land use in areas surrounding the Oroville Airport. Basic goals of the. Airport Land Use Commission are: 1. Preservation of navigable air space around airports, 2. General safety of people and property around airports, 3. 'Mitigation of aircraft impacts. Powers and duties of the Airport Land Use Commission as set forth 'in Sections 21670-21678 of the Public.Utilities Code are: 1. 'To assist local agencies in insuring compatible land uses in.the vicinity of existing airports to the extent that land in the - vicinity of such airports is not already devoted to incompatible uses, 2. To coordinate planning at the.state, regional and local'levels-soas to provide for, the orderly development of'air transportation while at the same time protecting the public'health, safety and welfare, 3. To prepare and adopt an Airport Land Use Plan, 4. To review the plans, regulations and other actions of local agencies and airport operators. It is important to recognize that the Commission has.no powers or control over the following: 1. Lands presently developed in airport incompatible uses, 2.` The operation of the Oroville Airport. This.plan establishes planning boundaries around the Oroville Airport area of influence. It sets forth appropriate land use, including building height restrictions, to the extent that such land is"not already devoted to incompatible uses. 3 • A. General III. DESCRIPTION OF THE.PROJECT AND ITS LOCATION The "project" is a set of long -range -goals and the policies which will 4, direct land use surrounding the Oroville Municipal.Airport in attaining. the type of growth and development -.compatible with airport operations within the next twenty years. These goals and policies will be confined to the Oroville Municipal Airport planning area (Appendixes 1, 2). This, report will summarize,the proposed goals and policies and the impacts that may occur due to the implementation of the plan.-. - B. .Location and Access i The airport is located approximately three miles southwest of -central Oroville. Oroville Dam -Boulevard (State Route 162) runs along the north boundary of the airport and connects State Highway 99E to the west with Highway 70 to the east thereby providing good access from Oroville and its environs. The access road leading from Oroville Dam .Boulevard to the terminal building is a two-lane asphalt surfaced road in good condition with unimproved'shoulders. The road terminates at the south. end of the existing -apron area. The.parking.lot adjacent to the terminal fronts on the access road. The access road and•parking lot are adequate for present needs. There are no hazardous obstructions to.aircraft using the airport. The airspace in.the vicinity of the airport was checked and no violations.of the,Federal Aviation Administration, Part 77, were found. It should be noted that in performing an inventory of the existing.airport facilities no violations of the Federal Aviation Administration or California Department of Aeronautics rules and regulations were noted: C.. Suwmary of Policies ' Introduction The objective of.the Airport Land Use Commission is to promote the orderly development of lands contiguous to the Oroville Airport in a manner which safeguards the general welfare of the inhabitants, assures the safety of air navigation, and maintains the utility of the Oroville Airport. To, fulfill this objective,•airport areas of influence which encompass. those areas where compatible land use planning is essential have been developed for the Oroville Airport. The following policy goals each apply to its special zone within the airport area of influence, and address three areas of concern` • 1. Preservation of navigable air space 2. General safety of people and property 3. Mitigation of airport impact The ALUP recognizes the need for consistent, rational application of criteria for land use around the Oroville Airport. It also recognizes that the Oroville Airport serves different aircraft types.in different quantities, in different operating environments, and that each impacts its surroundings in a different way. Therefore, the,policies presented In the plan are general in nature. They are based on federal and state standards for noise and safety and'are designed to be adapted to individual cases. Within the restraint imposed by the ALUC' .s height, 'noise, and safety policy, land.use planning for local need is left entirely to local jurisdiction.. General'Policy Within the boundaries of,the airport area of influence, the ALUC recognizes'its authority and'jurisdiction is limited by the California. Public Utilities Code 1/. General policies of the•Commission shall be: - 1. The Airport .Land Use Plan will set general parameters for development of specific regulations and zoning for land uses within the area of influence of the Oroville. Airport As.guidelines-for each member agency in the development of amendment of General Plans, Specific Plans, Zoning Ordinances, or other regulations required to achieve the goals of the Airport Land Use Plan for the Oroville Airport. 2. For member agencies the Commission will assist them in reviewing changes in General Plans or other community plan'changes,and propose new land use contiguous to airports (within the airport area of influence) to ensure consistency with the ALUC prior to formal actions by cities or county. Coordination of such efforts also will be the responsibility of the Commission's staff. 3. ALUC's staff shall work closely with the Orov.ille City and airport management to implement provisions of the Airport Land Use Plan and to achieve the objectives of the ALUC. 4. ALUC.staff will work with -member jurisdictions to develop procedures which will facilitate identification of parcels within the zone and safety area of the airport area-of*influence prior to actions such as zoning changes or issuance of building permits.to assure compliance with 'the goals' of the, ALUP. c 1/Section 25774"et seq., Public Utilities Code. 5. In creation of airport areas of influence, the ALUC shall use FAR, Part 77 contours and CNEL noise contours from the best "sources available to it. The ALUC shall revise and/or update CNEL contours whenever operational changes'occ.ur. 6.' The ALUC has no jurisdiction over airport operations which'include the.number and type of aircraft taking off and landing, time.of aircraft activity and airport traffic.pattern used. 7. The ALUC has jurisdiction over land uses within the airport area of influence except•to the extent that land within the area of influence is already devoted to incompatible uses. Airport Height Restrictioin.Policv Assuring the safe passage of aircraft into, out of and around the Oroville Airport by safeguarding and preserving navigable air space,,is the objective of airport height restriction policies. Federal Aviation Regulations, Part 77 sets forth criteria for describing.the'navigabl'e air space requirement of each airport. Objects which penetrate above. imaginary surfaces described in FAR, Part 7.7 can impair safety and raise weather minimums for instrument approaches, thereby decreasing the operational capacity of an airport. ALUC height restriction policies.shall be to: Designate height restriction plans for the Orovi•lle Airport as laid out in Chapter 3 of the ALUP, Restrict the development of new incompatible land uses within airport height restriction areas -which penetrate FAR, Part 77 surfaces, Review any specific projects within the airport area of influence which may pose an intrusion into navigable air space. Airport Safetv Polic The ALUC safety policy objective is to assure the safety of people,and property in•airport environs from'accidents.involving aircraft and to minimize adverse influences of land uses on runway approach and clear zones on aircraft landing or taking off., ALUC safety policy shall be: To designate airport safety areas identified according.to degree of hazard as safety area 1 (clear zone), safety area 2 (approach zone), and safety area 3 (general airport traffic`pat:tern zone). 6 11 3 To restrict.development of new, incompatible land uses within airport safety areas 1, 2, and 3. Airport Noise Policy The ALUC noise policy objective is'to assure that new land uses in airport environs are compatible with.aircraft-generated noise, compatible land use planning and acoustical installation in new structures. The review of'the ALUC requires the development and enforcement of.regulation involving zoning for general compatibility, site .planning and acoustical installation standards. ALUC'noise policy is within the boundary of'the 55 CNEL contour as projected in-the. Airport.Land Use Plan. 1. Institutional land uses such as schools, hospitals,` convalescent homes and other inpatient health care facilities shall not be permitted, , 2. Multi-family residential land uses may-be permitted subject to an acoustical,analysis showing that all structure's have been designed to limit interior noise level in.any habitable room to 45 dB CNEL, within the boundaries.of the 55 CNEL contour as projected in the Airport Land Use Plan. -Compliance with the acoustical analysis requirement"shall be as specified-in Section 28, Noise Insulation Standards, Title 25, Chapter 1, Subchapter-1,'Article 4 of,the California Administrative Code. r • - ... s IV. DESCRIPTION.OF THE ENVIRONMENTAL SETTING A. General Oroville is located on the eastern edge of'the Sacramento Valley in the lowest foothills of the Sierra Nevada range. The airport planning area occupies.a valley floortype environment with.annual grasses and valley oak as its primary vegetation. Elevation in this area is generally. between,100-200 feet A.S.L. Agriculture is not ,of primary -importance; however, there are some orange, mandarin and olive orchards in the planning area. There are also large parcels of land that are suited for cattle grazing. Oroville.is the economic center for the planning area`as•well as the outdoor recreation"center for a large portion of the'north state. The recreational and tourist opportunities that exist as a•result of the Oroville Dam and its related facilities are numerous. Lake Oroville is popular for various types of boating, fishing•and skiing. There are also hiking and camping facilities available. The City;is in the process of upgrading its historical sites in an attempt to further expand its tourist attraction. B. Natural Environment 1 'Soils The Soils:Map,(Appendix•3), along with this text,*shows general -patterns of the dominant soils for the Oroville area. This soils map. is intended for general planning purposes only and decisions regarding specific -sites or proposals should be based on more accurate soils tests. The Oroville Soil Survey Report contains extensive'information regarding the characteristics common to each. Two broad.categories.of soils can be identified in the Oroville Airport planning area:. alluvial soils and terrace soils. Of these, the alluvial•soils, particularly the Columbia soils, are considered. agriculturally important, rated as Class I-II•by the Soil Conservation Service (SCS). Nearly all`of these soils are either built on or were overturned by dredging. `The terrace soils, particularly the -Redding soils, are considered Class IV soils (good to marginal) and.are used for livestock grazing and other smaller orchards, mainly olives and citrus. Commercial,livestock grazing is largely confined to peripheral areas Where parcel sizes are large enough to be economically useful and fewer conflicts with residential development exist. 8 0 2. Geoloey The --natural earth.materials present in the subject area can be divided. into three major -groups -for planning purposes Volcanic Rocks: Basaltic lavas cap South Table Mountain and'the Campbell Hills to the.north and northeast of -the airport. Sedimentary Rocks and Older Alluvium: Conglomerate, sandstone and siltstone occur both as moderately consolidated rock units and as poorly consolidated soil types on the flats and lower'foothills of the area around Thermalito and the airport'., Recent Alluvium: Unconsolidated, coarse gravel and sand is the principal component of the recent alluvium located along the Feather River to the east of the airport. An extensive discussion of geologic units and their land use capability_, is contained in the Survey Report. 3. Seismic Activity Movement,.of the Cleveland HillFault on August 1, 1975, was apparently the result of crustal strain developed in the Foothill Shear Zone. The Cleveland Hill Fault, located about nine miles east of the Oroville Airport, trends -north-northwest and,is.approximately 10 miles long. It is presently the only known active fault within Butte County. 4. Hvdrolosv The Oroville�Airport plan area is located downstream of the Oroville Dam .and *is bordered on'the southeast by the Feather River. Flooding within the area is not a problem due to the Oroville Dam's control and regulation of tiie river. During.periods of heavy..rain, releases from spillway may cause localized flooding in the wildlife area south and east of the airport.. , The major stream which drains .the planning area is Ruddy Creek in Thermalito. Lands adjacent'to the Feather River are flooded periodically by releases from Lake Oroville. These areas are designated as floodways by the State Reclamation Board and most development is prohibited by law. Thermalito has-been affected by flooding and localized -drainage problems in past winters. Lake.Oroville, the Forebay and Afterbay provide recreational opportunities as well as the primary function,'of�flood control and water conservation. 0 Portions of Thermalito have poor drainage due -to -the geologic structure of the area'which results in a high water table and localized flooding. Studies have been -prepared for the development of a storm drain system throughout Thermalito to reduce flooding problems. 5. Water Quality The quality of water designated for domestic, industrial and irrigation uses is excellent. The various water supplies are diverted from various branches of the Feather River or pumped from deep wells. The water that is stored in Lake Oroville is transported out of the.area via the rivers, canals and aqueducts that are a part of the California State Water Project. 6.. Vegetation There are eight.habitats located in the Oroville Airport planning area. Open Water: consists primarily of various species of algae and plankton. ,Marsh: tule, bulrush, water --;lily and sedges are abundant. Willows are sometimes common.and algae is the most abundant small plant. Riparian: willows, cottonwood, sycamore, and valley oak are dominant. Elderberry, black walnut, and box elder form a mid -story.. Blackberry, and poison oak are common shrubs. Many grasses,and herbs occur. Grassland: vegetation is largely limited to grasses and herbs less" than three feet high. Trees are sparse and widely scattered. There are many vernal pools during the rainy season. Originally,'native` bunch grasses were dominant; however, overgrazing caused these to be replaced by annuals such as Bromus*and Festuca. Common wildflowers are valley goldfields, johnny tuck, tidy tips, and frying pan poppy. Valley Woodland: White (valley) oak is the dominant species. •It ` *may be located near moist areas where various riparian.plants maybe located. Wild grape and poison oak are common. Shrubs and grasses.' and herbs cover the woodland floor.. y Town -Residential: Native plants necessary for wildlife.have been` replaced by exotics. However, there are some exotics that are useful to wildlife: pyracahtha, honeysuckle, maples,.poplars, bottlebrush, and most domestic nut and fruit trees. Open Fields: Located below 3,000 feet elevation, these fields ai^e used for grazing and various crops. Agricultural conversion has resulted in domestic..plants with occasional native species.or exotic weeds. 10 4• , r R Orchards:. Located below 3,000 feet elevation. Include agricultural tree farms, eucalyptus groves and some non -crop exotics. Common orchard crops for the Oroville area include olives, oranges and mandarins. Individual rare plants are not located within the Oroville area;, however, riparian vegetation as a habitat type is considered to be endangered. This habitat'is primarily located along the Feather River. There are -two relatively small vernal pools in the Thermalito area west of 18th Street. 7. Wildlife There 'is a wide variety of species.inhabiting the Oroville area. A' complete listing of the species is too lengthy to inc.lude.in this report; however, a partial listing is included as Appendix 3 of the. Environmental Impact.Report prepared for the Oroville'General Plan Amendment Many species are associated with a particular habitat - they are as follows: Open Water: Used fall through spring when water;•birds are wintering here. Mammals include beaver and muskrat. There are about 98 bird species; most are migratory and diurnal. Bird species of,special concern are the Aleutian Canada goose, bald eagle, and peregrine falcon, which are endangered. The osprey and white pelican populations are diminishing. Marsh: Wildlife use is much greater than it would appear,to be to the casual observer. During'fall and winter:large'flocks of wintering birds are found in marsh areas. There are about 14 species of mammals, most of`'which are nocturnal. -Commonly observed are muskrat and -bats; raccoon, m-ink'and striped skunk'are common. There are about 107 species of birds. Species of special concern include those listed under -the "open waters" designation and the black rail and -yellow -billed cuckoo, which are on the -State rare list. " Riparian:- The riparian habitat supports the greatlest,wildlife densities,of all terrestrial habitats. Some species depend on riparian habitat -for -their continued existence. There are about 32 known mammal species. Frequently seen are deer, gray squirrel, opossum, red bat; cottontail', deer mouse, red fox and ringtail. There are about 144 known bird species. The loss of --riparian habitat is of.,major importance in the decline.of the yellow -billed cuckoo. y The osprey,'Copper's hawk, sharpshinned,`hawk, purple -martin, willow flycatcher, western blue -bird, Bell's vireo, yellow warbler, and .yellow chat have declining populations. Several mammal species, such as the ringtail, deer'mouse and deer are being extirpated due.to the loss of:riparian habitat. Beaver and river otter are threatened by flood control and -bank. stabilization projects. Grassland: This habitat is commonly underrated as a wildlife habitat. Birds are largely ground dwellers..*There are about'89 .bird species. There are 24 species of mammals. Common are the broad handed mole, pallid bat, black -tailed hare, Botta,pocket gopher, California e. meadow mouse and badger. Valley -Woodland: Much of the wildlife 'activity takes .place high•in the oaks. There are 83 -bird species and 32 mammal species. Town -Residential: Dependent upon intensity of all pollution forms, density of human structure and population, domestic.animals, and the destruction of native habitat. Use can be fair if encouraged. -by human residents. Mammal use, most affected with. -virtual extirpation of all species',in areas intensely converted to human use. Bird use reduced drastically with natives frequently replaced by urides.irable exotics such as starlings and house sparrows.. (Information regarding vegetation and wildlife was.extracted from an informational booklet prepared by Jim'Snowden of the'California Department of Fish and Game entitled Butte Count- Habitats.) 8. Climatology/Air Quality -The general climate of the Oroville area is Mediterranean Warm Summer, characterized by two predominant seasons, composed of hot, dry summers and mild,- rainy winters. Approximately 97% of the annual precipitation, averaging about 28 to 30 inches, occurs during the winter months. Average'daily.temperatures ranged (in 1978) from 42.8 in December to 78.9 in July., The winter minimum was 23 degrees F on.December 31-, 1978, and the summer maximum was 115 degrees "F on July 9, 197.8. Winter lows are rarely less than 16 degrees F and summer maximums are rarely higher than 116 degrees F. The frost -free growing'season averages 7 to 8 months in length, and is favorable to a wide variety of crops. Prevailing winds are from the south-southwest or from the north-northwest, depending mostly on the season. The south winds are usually related to storm fronts. North winds are typically associated" with high pressure ridging and bring fair weather. The growing,season is about 270 days.'_ 12 • The Planning Area site is located i Sacramento Valley air basin. This Nevada, Cascade and Coastal Ranges. trapping pollutants in the valley a • n the eastern portion of the air basin is enclosed by the Sierra The mountains create a barrier t times and limit dispersal. Because the air basin is a natural closed basin, often with poor air circulation and high atmospheric stability, air quality may undergo a very rapid local degradation at any time of the year. This stability, in conjunction with a frequent inversion factor which traps the.cooler air under a warm air mass, intensifies pollution concentration and tends to hold air pollutants near the ground. Air quality in Oroville, as in the rest of the county, is relatively good,' but the standards for carbon monoxide (CO), photochemical oxidants (smog), and suspended particulates are occasionally exceeded, and the County has been designated a non -attainment area by the U.S. Environmental Protection Agency. Detailed analysis of air quality for Butte County is contained in the Butte County Non -Attainment Plan published by the Butte County Association of Governments, January 17, 1979. The City of Oroville does not have a monitoring station that would identify local emissions; therefore, county -wide data'is used. All counties north of Sacramento and Yolo Counties within the Sacramento Air Basin have been designated as non -attainment areas for photochemical oxidant on the basis of recorded violations at the various county monitoring stations. As a result of the non -attainment status, Butte County has adopted a non -attainment plan which contains air quality control strategies. Adherence to the plan will help to obtain compliance in a timely manner. The City of Oroville utilizes the Butte County plan and has not developed additional strategies. The planning area is serviced by an Air Pollution Control District whose major responsibility is to monitor and regulate the emissions from stationary sources within the county. They have identified several sources of air pollution. Among those are mobile sources, agricultural burning, fuel.combustion, mineral and wood industries, and agricultural operations. It should be noted that pollutants from mobile sources are decreasing due to tighter emission control standards. The decrease in the number of older vehicles, which are not required to have emission control, is also a factor in the decline. Types and Effects of Air Pollution Hazardous exposure levels vary with the amount of each pollutant and the extent of time exposure occurs. Carbon monoxides begin to be hazardous to most people at concentrations of 100 parts per million (ppm) if experienced over a period of several hours. However, some individuals, are affected at lower levels of exposure. Nitrogen dioxide, one of several nitrogen oxide compounds (NOx), is considered very toxic. This 13 air pollutant affects visibility due to its brown coloring. Ozone, another substance extremely toxic to humans, is emitted in usually low amounts. However, the chemical interaction of nitrogen oxides, certain organic compounds, and.sunlight forms ozone in the atmosphere, increasing its concentration. The mixture of pollutants,called "smog" is formed by the action of sunlight on the various colorless gases emitted by vehicles, causing a visible, harmful haze within the local atmosphere. Hydrocarbons and associated airborne particles result from incomplete combustion of fuels and from agricultural burning (rice waste during the autumn months). These substances are known or suspected to be environmental causes of cancer if exposed.to for prolonged periods of time. Total suspended particulates (TSP) include hydrocarbons, as well as dust, soot, lead,.photochemical smog and other minute or pulverized pieces of matter: These particulates, such as pesticides and other airborne chemicals and even radioactive particles, are often extremely toxic. Under most concentrations, TSP create a nuisance and objections from people who are exposed to them. However, individuals with respiratory problems can be severely affected when exposed. Therefore, air pollution is a potential health problem in the area. The State Air Resources Board has the primary responsibility for controlling emissions to achieve improved air quality, implemented locally by the Butte County Air Pollution Control District. (Butte County DEIR for the Chico Area Land Use Plan, 4/82, p. 59) Wind A comprehensive analysis of airport winds has been made. This analysis was compared to the Wind Rose that was prepared as part of the Oroville Airport Plan, in 1985., Only minor deviations were noted. The Wind Rose shown on the "Existing Facilities Plan indicated that the runways are ideally oriented for the winds observed. Coverage for the two runways was computed on the basis of cross wind components not exceeding 15 miles per hour in accordance with Federal Aviation Administration criteria. Runway 12-30 provides 97.6 percent coverage and Runway 1-19 provides 94:8 percent coverage. The combined coverage on the two runways is excellent, 99 percent or greater. C. Cultural Environment 1. Population and Land Use Population densities and land use characteristics within the Oroville Airport plan area consist of at least four distinct types. First, to the east and northeast of the airport, is the area commonly known as Thermalito. This area is planned for low- to medium -density residential with appurtenant commercial uses, and is developing in that manner. The area immediately to the north of the airport is within the incorporated city limits of Oroville and is zoned for industrial uses. To the northwest, west and south are rural residential areas of parcel sizes 14 ranging from 3 to 5 acres in the northeast and 10 acres to•the south, up to over 100-acre.parcels." Further to the south and west is the Thermalito Afterbay, part of the Lake Oroville Dam system of water management.` To the east and southeast of 'the airport is an area of historic dredger,tailings, the borrow area,(rock'source for the Oroville Dam), and riparian habitat along the Feather -River. 'This area has been set aside as a wildlife area. While the characteristics,of the planning area have not undergone radical change in the last ten to -twenty years, the Oroville area outside the airport plan area has experienced considerable growth (see Table 1). That growth is expected to continue on into the year 2000. Additionally, the Oroville Airport serves surrounding areas which are not generally considered to be in the.Oroville•area. Most notable are Gridley, Biggs and Richvale, to the west and southwest. Generally, use of the Or'oville Airport by people from the Gridley -Biggs and Richvale area is limited to private sport•flying, and not commercial uses., Within this .larger area ,there are approximately 50,000 people as of the 1980 Census, and most likely from 55,000 to 60,000 people as of 1985. 2. Noise The noise environment for the Oroville Airport area is quite good, with ,only a few residential sites being exposed to excessive noise levels. These sites are located south of the Airport,,west of Larkin Road. In most of the airport plan area, surface vehicular noise is the primary noise generator with other factors creating.a minor intrusive type_ of noise background. Noise sources in the Oroville Airport plan area: 41. Major traffic circulation arterials 2.. All -industrial processing plants 3. The Larkin Road Dragstrip • 4. Oroville Municipal Airport 5. .18th Street, north,.or Oro Dam -- motocross recreational riding 6. Larkin Road near Timothy -= shooting range Noise sensitive sites: 1 Rest homes and'convalescent'homes 2. School locations is r TABLE 1 PLANNING AREA POPULATION 1960.-1990 1950 1960 1970 1975 1980 1985 1990 1995 2000 . Thermalito N/A N/A 4,217; 4,811 5,063 55,500* 6,050* 6,650* 7,300* • (includes the -airport . planning area).. Oroville City 5,345 6,115 7,536 7;368 8,683 9-,975 10;673* 11;420* 1.2,219* Oroville Area 19,154 21,060 21,7 7 28,450 35,4001 37,400* 39,363 45,633 52,901 Butte -County 64,930` 82,030 101,969 120-1901 143,850 `161,000 186,298 206,684- 225,775 Figures based on past development trends.and City annexation policies. • 3. Wildlife preservation area. • The noise impact on surrounding areas is modest under the current level of airport operations. The 55 dB(A) (Community Noise Equivalent -Level) •contour extends approximately 1,000 feet beyond the 'airport property line on the Runway 1-19 centerline extension. The area within this contour is currently uninhabited but could be developed with residences at rural densities, light industrial uses, etc. The level of operations at the airport has been increasing 2 to 5 percent a year. At this rate, 150,000 to 200,OOO�operations per year can be expected by the year 2000. About 500 of these operations would be corporate'jet'aircraft. Approximately 80 percent of jet aircraft operations are expected to 'use Runway 1-19. As airport operations increase, the 55 dB(A) (level day -night) contour will extend about 3,000 feet beyond the airport property boundary. This extended contour would partially or totally enclose 15 -of the 20 lots in .the subdivided area located immediately southwest of the airport. The approximately contour positions for various operation levels are shown in Appendix 2. Some precautions should be taken in using this contour: 1. This analysis presumes that 90 percent of aircraft operations are during daylight hours. This assumption is enforced by the present lack of runway lighting -on Runway 1-19. However, increased nighttime air freight and air taxi service is expected because VASI lighting is scheduled for Runway 1-19 in 1986, with runway lighting scheduled between 1989 and 1991. 2. The contour position calculations are based on noise energy, but do not acknowledge that aircraft noise is particularly intrusive. A Ldn level of 55.dB(A) created by aircraft noise is considered less acceptable than an equal level generated by less obtrusive noises of similar.energy content (see Appendix 4). 3. Propeller aircraft operations dominate the noise contours. Jet aircraft operations, while not dominant in determining noise contours, will produce significant individual intrusive noise occurrences. 4.• The analysis assumes no significant jet transport operations. The addition of a scheduled passenger service using large jets would move the 55 CNEL line outward., The noise impact of jet operations should be addressed in the Oroville Airport Land Use Plan, and, certainly before such, service is initiated. The noise impact of large jet traffic can be adequately represented by a simple outward shift in the noise contour. Such operations, though infrequent, will cause isolated noise events at significant levels. 17 a. Noise Criteria and Standards There is an"inherent conflict between land use and noise`,generation. A quiet parcel of-land has a wider�r.ange of potential uses,'all'other factors being equal. As noise levels increase,• the.choice of an appropriate use narrows. The effect of increasing. noise. level's on*. residential�areas is shown in Appendix 6. ; Noise abatement has a.price, sometimes a very high',pr'ice. Thus1.planning for land use involves a balance between a maximum range of use choices and an acceptable level of allowed noise.. The criteria shown in Appendix 7 are based on prevention of he loss or uninhibited activity performance. More widely referenced criteria are shown in'Appendix 8. • Note'D in Appendix 8 is of considerable'.local relevance.`- A quiet outdoor environment is considered'one'o-f the assets of the,Oroville .,area.' ,The maintenance of.-this asset -will require more.stringent noise standards tha.n'may be applied in noisier urban areas.,. b. General Noise Control Strategies. ` 1i. Noise should` be considered'as'a basic aspect of,planning, zoning, and building--permit actions..- 2. ctions. 2. See."Ciity of Oroville Ordinance No. 1280.' 3: Noise generated by,transportation systems should be anticipated to allow sufficient,lead'time to.develop mitigation measures: 4. .Enforce vehicle noise emission statutes.. 5. Promote a public'awareness of noise problems. C. Policies 1•., _ Discourage residential'-development.'in areas with .an ~actual or anticipated day-night average level (Ldn) of noise exceeding 55 dB(A). 2. 'Require-sound insulation and/or other sound barriers in areas with an actual. or anticipated noise level of 55 dB(A). 3. Encouraged nfilling of vacant si-tes surrounded by development to lessen'growth"of traffic-related noise. 4. Consider and mitigate the noise impacts of allLdevelopment," particularly in noise-sensitive;'areas. 18 ' 5. See City of Oroville Ordinance. No. 1380 6,' Pursue completion,of the Oroville Airpoxrt.Land Use Plan currently being prepared by the Airport Land Use Commission (ALUC); to include comprehensive plans for noise -compatible land use and appropriate zoning controls. 7. Promote'the,preparation of an'.area'transportat.ori study to assist in.. defining traffic -related noise problems. 8.` Mitigate existing traffic noise through the enforcement of vehicle noise.emission statutes, both'for on- and off-road uses. 9. Encourage a broader public understanding of the detrimental effects _y ;of noise,'and methods•for its reduction and prevention. 3. Circulation The street,system in the airport plan area is functionally divided into arterial,'collector`and local streets.' The major north -south. transportation artery is State Highway 70. Oro'Dam Boulevard CSR 162), Grand,Avenue and -Nelson Avenue.provide.the majority of western access to the' City, The-Oroville, areartransportation needs -are also served .by the Oroville Municipal Airport, Union Pacific Railroad, Greyhound Bus Lines,, the Butte County Transit and the Oroville'Area Transit. 'Local public transportation is provided by the,Oroville Express and the Oroville'Area Transit. , 4. Public and'Quasi-Public Services a. Power Pacific Gas and Electric,provides the•primary, power source for the Oroville.Airport plan area. Electricity is available to the .majority of the planning area. b.. Natural Gas Pacific Gas and Electric provides natural gas to the area; however; gas line extensions will be necessary in some cases. c. Telephone " -Telephone service is available throughout the planning area. ..In some isolated instances telephone service will' -not be 'extended until ' .,additional'infill.connections are committed LJ d. Water • Thermalito Irrigation District (TID) supplies domestic water service to the majority of the Thermalito area. There are'no irrigation accounts within the planning area. Water is received from the Thermalito Power Canal and six local wells. TID at present serves an estimated population of 7,000 by way of 2,500 active service connections. e. Sewaxe Wastewater and disposal in the Oroville area is accomplished,by means of three separate collection agencies and a centralized sewage treatment facility together with, in certain -areas, individual on-site septic tanks in the outer area of the planning unit. The centralized advanced secondary sewage treatment facility (SC -OR) is owned and operated by the Sewerage Commission - Oroville Region. This facility is designed to accommodate an average flow of 5.31 million gallons per day, with present dry -weather average flows of about 2.0 mgd. The plant was designed to serve an estimated population of 44,500. The current estimated connected population is 17,500. SC -OR has no funded capacity, nor capacity set aside, specifically for industrial waste, toxic or plant operation. Thermalito Irrigation District became a sewering agency in 1971 due to the need created by widespread septic failure that resulted in a health hazard in the Thermalito area. This sewage service area (CSA 26) maintain's a gravity -flow system from north to south with one pump station to transport effluent across the Feather River to the SC -OR interceptor within 7th Avenue. No public sewer system serves the airport. Sewage disposal is by underground septic tanks and leach lines. The nearest public sewer is located 2,200 feet easterly of the airport across Larkin Road, and runs down Fresno Avenue to Harlan Avenue. Construction drawings and layouts for sewer extension have been prepared in conjunction with a private subdivision. This development would require,extension of sewer facilities between Larkin Road and Harlan Avenue. Development of the airport property will require construction of off-site sewer facilities. Extension of sewer facilities to the airport should be deferred until there is a demand, or until grant funds are available from the State and/or Federal Government. Development of private property may cause construction of part of all of the facilities by private developers, resulting in significant savings to the City. Stormwater is disposed of through a system of catch basins, underground pipes, culverts and open ditches that discharge into established natural drainage courses. The existing system is adequate for present uses and can be expanded when additional airport development occurs. Miscellaneous grading is needed to improve surface drainage in low and ponding areas. 20 f. Police , L Police protection is provided.by five agencies in the planning area. 1. Oroville Police.Department (OPD): This department serves the area within.the Orovil'le City Limits. This includes the airport, golf ,course, and the industrial land to the north of Oro -Dam Blvd. (SR 162) and the airport. 2. Butte County Sheriff's Department (BCSD): This department serves all of the unincorporated areas of Butte County including the planning area and provides coroner's service to -those areas contained within City boundaries. Service is ranked below -what is considered to be acceptable. Departmental'funds are allocated by, the Butte County Board of Supervisors from the general fund. 3. California Highway Patrol (CHP): Provides traffic patrol for all State highways and roads throughout the County. ('State funded.) 4. California State Police: .Services all. State-owned park land. ( State funded'.) 5. California Department of Fish and Game: Monitors the enforcement of all laws relating to wildlife. (State funded.) g. Fire Protection 1. Oroville Fire Department: Provides fire protection to the areas within the City Limits. There are 26 full-time paid personnel plus 30 volunteers and 1secretary.- Service is.currently adequate and the department maintains advanced planning in order to be prepared for future needs. Oroville Fire Department maintains a Class 4 rating by the Insurance Service Office. (Funded by City Council with general fund money.) 12. Butte County Fire Department/California Department of Forestry: Butte County contracts with the California Department of Forestry to provide fire protection. In the,Oroville.area there are 201paid, personnel and,45 volunteers. Currently, the Butte County Fire. Department provides adequate rural service. (State and County - .funded.) i h.. School Districts 1. Thermalito Union High School District: This district serves the majority of the airport planning area.' The district has three elementary schools, one of which (Poplar Avenue School) is located just outside of the.airport planning area.. 2. Oroville Union High School District (OUHSD): This district serves the entire planning area. There are two high schools and one continuation school. The schools are not at capacity. 21 3. The. Butte County School District maintains the special education program for the planning area. Mesa Vista School in Thermalito assists the children with speech and hearing impairments. Sierra Del Oro in the downtown area assists children with physical and mental handicaps. i. Medical Facilities The Oroville Medical Center maintains a 24-hour emergency staff which is capable of -.treating the majority'of cases it receives. Certain cases must be transported to Chico, where more specialized equipment is located. There is ample bed capacity at the medical facilities in the near term. 5. Development Trends This section focuses on the recent development which has taken place in the planning area, and within the entire Oroville area, and'possible future trends.' The amount and timing of recent development in Oroville, like most communities, has been a response to both local events and larger -scale -trends. The key local events in the past 20'years have been the construction of Oroville Dam and the related storage, power, recreation and access project. This tremendous public investment in the 1960's was accomplished by all kinds of residential construction, development of the Oro Dam Boulevard 'commercial area, new public buildings and many churches. The slump which followed in the late 1960's and early 1970's was reflected in high vacancy rates, low housing costs, reduced business revenues and limited construction. Building permit data indicates that there were no more than 10 new housing units built per year in the City between 1969 and 1974, with similarly unimpressive totals for commercial and industrial development. It was during this slow period that the last major General Plan revision was adopted in 1973, a fact reflected in the conservative findings and proposals of that effort. However, as in many semi -rural areas, the rate of growth and development increased tremendously in the'mid-1970'x. Record City totals established in 1979, and not exceeded since, include 280 new housing units, total construction value of almost $12,000,000 and'276 occupancy. permits issued"for businesses and apartments. The'late 1.970's construction peak was dominated by apartments and a wide variety of retail businesses, especially outlets, of large chains. This area's substantial growth in that period reflected a nationwide trend of migration from large metropolitan areas to smaller communities with a -slower pace, rural surroundings and outdoor recreational opportunities. Immigrants to this area included both retirees and families, frequently with substantial.equities to invest and valuable experience and skills to put to use. 22 Development has been substantial in the past two years but has definitely tapered off from the 1979 peak. -The continued inflation of financing costs and energy costs has had several other effects on development.' Residential'sales units are becoming smaller and more energy efficient; evidence of this trend is shown by the numerous recent proposals for small, attached homes with no side yards and jointly -:owned open areas. Limited demand for wood products has in turn limited local employment,' income and effective demand for housing and services. This effect is in addition to the effects of the migration slow -down caused by potential residents not being able to sell their existing homes and move here Although these trends may continue to limit development, many proposals for new construction are in the works in this area. Over 1,000 residential lots or sales units have been approved by the City and await financing and development. Judging from recent applications -for City sponsorship of industrial development bonds, there are'also many industrial.and commercial projects ready"to go'if financing is available and affordable., Development plans which may greatly affect the future of :this area must also include the long list of public facilities and development assistance projects proposed for funding by the City's Redevelopment, Agency. The above plans for growth are more than programs to achieve the economic benefits of growth. Such plans are a clear recognition that the Oroville area has many prerequisites to growth and few constraints with the big city to small town migration trend expected to continue in the 1980's, all types_of development can be anticipated and the "filling in" of the vacant sites in the planning area will continue. The only real question is, "how fast?" ,Migration trends and growth pressures could be greatly modified by future events. Oroville's growth would undoubtedly accelerate if there were significant reductions in interest -rates. Short-term increases in migration from the metropolitan areas to the south could also be induced by earthquakes or environmental problems in those areas or by large new industry here. Large increases in growth pressures could lead to a complete "build -out" of the proposed land use pattern in ten or fifteen years and the resulting need to completely revise this plan long before that time. 'On the other hand, economic factors could slow down.future development enough to require only minor plan changes,during the next'20 years. All growth within the southern portion of*Butte County will result in additional use of the Oroville Airport for'both sport flying and for business and commercial flights. 6. Housing Availability -and Supplv The number of households has increased consistent with the general population growth, although the trend toward fewer persons per family will cause households to increase at a`slightly faster rate than.the population. The fastest increase has been in the unincorporated area where developer activity is evident. 23 E A detailed analysis of housing characteristics within the entire Oroville area is contained within the, Environmental Impact Report prepared by Cook Associates for an Amendment to the Oroville General Plan by the City of Oroville in February 1983. Within the.airport planning area population density is quite low, .ranging from 1- to over 300 -acre parcels, with the majority in the 10- to 40 -acre range, except for the area to the northeast, along the extension of Runway 1-19. This area is predominantly 1/4 -.to 1/2 -acre parcels, mobile home parks and some -larger parcels that are of high potential for development of single-family residences. The area is planned for low density residential use of up to•6 dwelling units per. acre. Unmet needs 1. Is there an adequate supply of sound housing units? 2. Are families overpaying for shelter? +3.. Are familie-s overcrowding,to reduce housing costs? Of the three problem areas, only overcrowding appears to be declining, due in part to the reduction in family size.- Although enough housing is being built to meet the supply problem, families must pay a disproportionate share'of their income for what housing is available. NEW CONSTRUCTION NEEDS,'1980-1986 Housing Housing 1/ Units Households Households 'Units 1979/80 1979/80 1985/86 1985/86 Planning 12,002 -11,023 14,557 15,284 Area 2/ Oroville 4,100. 3,751., 4,337 4,554 1/ Includes 59 vacancy factor. 2/ City figures ,included in,planning area totals. Recent construction trends in the City indicate that the needed new housing units may be reached by 1985. The current vacancy rate in existing units is estimated by Pacific Gas and Electric (PG and E) to be near 5% based on a count of idle meters. Units under construction and new vacant units would not be included in PG and E's estimate. This could increase the factor to 6%. There is a need to monitor potential over -building in the unincorporated area. 24 7. Economic'Trends The City's local economy is a reflection of the state and national economies. The housing and construction industry has been depressed, unemployment is high, and .public entities.are•experiencing a lack of. revenue with which to carry out mandated programs. Retail sales are also falling. Several large industries have significantly reduced staffing levels and several commercial stores have closed. The City decided to take an active role in facilitating the expansion -of industrial development and commercial construction by utilizing the City Charter power ;available to`intervene in what is essentially a private market. Industrial Development Surplus vacant land within the airport boundary exceeds 200 acres. For the economic benefit of the City, the best use of this property is commercial light manufacturing. Transportation and circulation elements -complement this location for light industry -use as follows:. 1. Light industry is compatible with and complementary to normal airport development. 2. Good vehicular.access to the airport from Oroville and its "environs is provided by Oroville Dam Boulevard (State Route 162) which connects Highway 99E (4 miles to the west) to Highway 70 (2 miles to the east). 3. A Union Pacific Railroad line is located 3-1/2 miles easterly of the airport via Oroville Dam Boulevard. Approximately 180 acres of surplus land is zoned for industrial sites. There are about 72 acres east of the easterly taxiway of Runway 12-30 available for industrial development.. The triangular-shaped area between the runways is zoned for commercial light manufacturing, and consists of approximately 95=acres. The need for this additional acreage is not anticipated within 20 years. S. Archaeolosv/History Oroville was founded in 1848 as a gold mining camp named Ophir on the Feather River. As the entire Sierra foothills boomed with "gold fever," the camp grew until it was the fifth largest town in California in 1856. In that year, the name was changed to Qroville, Spanish for•"City of Gold," and the town became the county seat of Butte County. _ As a,result of the mining activity, thousands of Chinese moved to the area to provide labor and services. By 1880 Oroville had a Chinese population second only to San Francisco. Flooding and'fire all but eliminated the "Chinatown," and there are only scattered remnants.of Oroville's Chinese heritage. Most of the remaining buildings are situated in the downtown area adjacent to the'existing Oroville 25 historical area. Other historical sites'include,the Ishi Monument,. the Chinese Temple, the Chinese Cemetery,. the Jewish Cemetery and a large number of houses and buildings scattered throughout the Oroville urban area. The City does have a designated -historical preservation district and a historical and improvement area., The structures within that area are controlled by Resolution 3402 which"requires "all structures built, remodeled, rehabilitated or altered to conform to the "Turn of the. Century" theme. The Development Review Board is in charge,of overseeing this'requirement. No known sites of archaeological, or historical significance are located within the airport plan area. 26 V. ENVIRONMENTAL IMPACT OF THE PROPOSED ACTION A. General With regard to the Oroville Airport Land Use Plan it should 'be stressed that impacts associated with this project relate to the plan being designed to accommodate expected increases.in air traffic at the Oroville Airport. Direct impacts would include changes in land use policies necessary to implement the Airport.Land Use Plan, and similar changes'in codes or standards. Indirect impacts caused by implementation of the Airport Land Use Plan could include those caused by increased use of the airport due to its being a more desirable air facility due to implementation of the plan (i.e., a safer airport with less encroachment from urban development in critical areas such as clear zones and approach zones). The Oroville Airport Land Use Plan represents a relatively narrow range of goals, objectives and policies which are intended to guide the orderly growth of the community contained within the airport planning area, to preserve navigable air space around the airport, to preserve the safety of people and property around the airport, and to mitigate impacts caused directly or indirectly by increased use of the airport. The policy statements that were.developed to accomplish the above goals will have an effect on the environment. However, these policies have been thoroughly investigated as to their impact on the planning area. As a result of this review, it is felt that the proposed goals, objectives and policy statements, as contained in the Oroville Airport Land Use Plan, are those that will, best serve the .Oroville.community and the Oroville Airport. The adverse impacts that may occur as a result.of a proposed policy have been mitigated as much as possible within the plan by developing policies that mollify the anticipated adverse impacts. For example, policies directing increased usage by business jets and other heavy aircraft to a particular runway will be offset by policies calling for reduced densities or no development in clear zones. In this plan, policies were developed to assure adequate noise control and provision of adequate clear zones and approach zones to promote safety in aircraft operations. When the development of.policies is not feasible -or within the scope of the revised elements, mitigation measures have been identified wherever possible. B. Impacts and Mitigations J 1. Geology/Seismicity Impact #1= All structures within the Oroville area are subject -to seismic activity. This activity has affected structures in the past. Structural damage to emergency facilities is possible. 27 Mitigation #1: None. All buildings in•the airport planning area must meet uniform building code requirements for seismically active areas. 2. Water Duality a Impact #2: Increased use of the airport may affect the quality of water used for domestic purposes due to increased.use of solvents, oils, etc., for maintenance, washdown, etc. Human encroachment into watershed areas impacts water quality by way of the following reduced percolation, increased surface water runoff., increased sedimentation., human use of water storage facilities and man-made pollution entering ground or surface'water. Mitigation #2: Independent disposal of liquid wastes by "wet industries or aircraft maintenance operations using'large'quantities of water or toxic chemicals on airport lands should be required. ' Aircraft washdown facilities must be provided with drainage facilities that will not permit pollutants to enter either ground or surface waters. 3. Vegetation Impact #3A: Vernal pools are Areas of Special Biological Importance (ASBI), as designated by the-State.Department of Fish and Game. Residential and industrial developments north, -west and south of the Oroville Airport have the potential to destroy existing pools. Mitigation #3A.: The areas containing vernal pools which are adjacent to the F,orebay. and located in the-Or,ovil1e- Wildlife Area have been designated as Grazing and Open Land and/or agricultural -residential in order to limit the amount and types of development. The industrial area adjacent to the Oroville Airport and the Oroville Wildlife Area will be zoned L -I, Limited Industrial., The L -I zone restricts the amount and types of uses allowed, and subjects all new construction and major remodel projects to a development impact review. Drainage facilities will -be required'to meet state and local guidelines. Impact #3B: Residential development adjacent to the Afterb'ay may affect its use_by wildlife. Mitigation #3B: One -acre minimums in conjunction with health requirements -for septic systems and on-site wastewater disposal will significantly limit the amount of residential development that may occur and is therefore semi -self limiting. 28 4. Air Quality Impact #4: Increased aircraft operations, automobile traffic generated by aircraft users accessing the airport, and increased industrial uses at the airport will increase the potential for'increased air pollution at the airport. Mitigation #4:, None. Automobile emissions will be controlled by the state emission control standards. Development on airport lands will be required to adhere to the Butte -County Non -Attainment Plan and to meet the requirements o.f the Butte County A'ir Quality Control Board. Potential increases in aircraft emissions are not expected to be significant because of'the relatively,small amount'of time'actually operated within the airport planning area, and the altitude at which most emissions occur. 5. Land Use Impact #5: Airport clear zones have been designated pursuant to Federal Aviation,Agency Guidelines. Most of the'clear zones are under private ownership. The designation effectively minimizes the allowable uses of the.,property in order to preserve the public-health and safety. In the same instance, the designation clearly.reduces the value of the property to the current owner if the public health and safety are disregarded. Mitip-ation #5: The City should immediately acquire easements or�title to the clear zone sites. The Federal Aviation Administration will assist in the funding and acquisition of clear zone areas. 6. Noise Impact #6: The proposed extension of the Oroville Airportrunway., which may be necessary to.accommodate commercial air traffic will also increase noise in residential areas located within proximity -to the runways., Increased intensity of use of the airport will also contribute to an inc'rease in noise Mitigation #6: The impacts created by noise -producing uses may be limited through the enforcement'of the. City's noise .ordinance. It is recommended that the City review the existing noise ordinance in order to ensure adequate mitigation of,aircraft-related noise is'accomplished. Similarly, the County of Butte should adopt a,noise ordinance: implementing the Noise Element of the.Butte-County General Plan. The ordinances should contain noise attenuation standards,for all occupied buildings; especially residential buildings. 29 7.• Circulation Impact #7: The impact on circulation will be significant due to -the expected increase in industrial/commercial development of the airport property. Development adjacent to the Oroville Municipal Airport may adversely affect future airport flight operations. Also, the extension of runways and the expansion of airport services may affect the health' and safety of future area residents. Mitigation #7: The industrial -related sites adjacent to the airport should have zoning designations which limit the 'types of allowable .industrial uses to those that are compatible.with airport uses. ' The residential area.located.northeast of the airport' is already partially developed. Any further development should be carefully reviewed as to the impact that airport operations will have on health and safety, .with proper mitigation measures imposed.. The rural residential area southwest of the airport h.as been subdivided'' into 10- to 40 -acre parcels.. Attempts are being made to further' subdivide these parcels. Since these parcels.have not yet been. developed, the City and County. should prepare definitive.development criteria as a part of the proposed airport environs plan in accordance with state and federal regulations. It is essential that the.City coordinate efforts with responsible County and State agencies. 8. Public and Quasi -Public Services Power Impact #8A: Construction of a hydroelectric generation plant by the State Department of Water Resources has been abandoned. The power plant would have been located on the Thermal.ito.Afterbay outlet, southwest of the airport. The proposed project included 34.5kv electric transmission lines to be located within 4,500.feet of.the,runways. Although the State has abandoned the 'project, the site is available for other agencies or private firms to construct a similar power plant. Mitigation #8A: The site should be monitored by the C.ity.and County to assure that such construction and location of transmissionlinesdo .not have a detrimental effect on airport operations'and development. Impact #8B: There is an existing above -ground power/utility line located along the east -west access road in'the Afte.rbay Estates subdivision south of the airport and in line with Runway 1-19. If that runway is extended to the south as planned, the power line will be within the FAA Part 77 clear zone. 30 a Mitijzation'#8B= At the time of issuance ,of building permits for, building using said utilities, the County and/or City should require the utilities to be placed underground.. 9.. Development Trends, Impact,°#9: Development (especially residential) has slowed significantly`since its peak in 1971, but is beginning to increase again. Potential development pressures exist in Thermalito and to the south in Afterbay Estates. Mitigation #9: Require avigation easements to be granted to the Oroville Airport by all new development within the Oroville Airport plan area and within the 55dB CNEL-noise areas. The avigation easements• should address.all_potential impacts to-air'traffic including noise, vibration, fumes, dust, fuel" particles, electrical" interference,' height limitations, light sources, and,reflecti.ve surfaces. 31 VI. ADVERSE ENVIRONMENTAL IMPACTS WHICH CANNOT BE AVOIDED The proposed project will result in several significant adverse impacts, many of which will be reduced by plan policies, implementation measures and/or mitigation measures. The projected growth within the planning area is such that:'total mitigation of adverse impacts is not .feasible. The unavoidable impactsof the proposed project are summarized.as follows There will'be an increase in the amount and velocity of water runoff which will increase erosion and sedimentation. There may be degradation of surface and groundwater, quality. There will.be an,increase"in noise levels due to increased vehicular movement", airport use and industrial development.. There will be an increased demand_ for public facilities and services. The current characteristics of the Oroville life style may undergo change as.a result oflincreased use of the airport. Increased use of all runways may degrade the quality of habitats in the wildlife area to the southeast of the airport and the Afterbay to the southwest. 32 VII. ALTERNATIVES TO THE PROPOSED ACTION A. No Project As required by state law, the "no project" alternative must be considered. Adoption of this alternative would leave the airport with no Land Use Plan, Public Utility Code Section 21675 requires City and County General Plans to be consistent with the Airport Land Use Plan. Furthermore, no zoning ordinance or building regulation, General Plan or Specific Plan within the planning boundary can be adopted without first being referred to the Airport Land Use -Commission to determine consistency with the Airport Land Use Plan. If no Plan has been adopted, no finding of consistency can be made. B.' Modification of ProposedPlan; Runway Length. The plan as proposed provides for the extension of Runway 1-19 from 5925 ft.,to approximately 7025 ft. This extension would place the FAA Part 77 clear zone over all or part of 12 lots of the Afterbay'Estates subdivision,.severely limiting usable area on 8 of them. If the provisions for the runway extension -are eliminated, then only 7 lots are affected, and only 5 severely. These figures are based on retaining clear zones specified for precision approaches. Other advantages of this alternative are,that the runway threshold would not be moved closer to the hilltop to the southwest thereby increasing the vertical clearance from the bottom of the approach surface to ground level from approximately 5 to 25 feet (depending on final runway elevation) to approximately over 40 feet. Also, if the runway extension is to be'of the same gradient as the rest of the runway, an earth fill approximately 20 feet high will be required. Such extensive grading could have significant effects on erosion, drainage characteristics and aircraft safety. Disadvantages of this alternative are that Runway 1-19 would remain 5925 ft. long, which could limit future use by larger commercial aircraft. C. Modification of Proposed Plan; Type^of,.Approach The plan proposal calls for a precision instrument approach on the southwest end of Runway 1-19. The clear zone for precision approach is somewhat wider than that for a non -precision approach clear zone and 800 ft. longer. If a non -precision approach were specified,'then'1'0 lots of the Afterbay Estates subdivision would be affected, 6,severely, instead of 12 and 8, as discussed -in Alternative B, above. If a non -precision approach clear zone is specified for the existing runway (del;et.ing the provisions for runway extension as in Alternative B), then the number of lots affected drops to 3, with only 1 severely limited. It.should be noted that under this alternative, none of the affected lots would be 33 VIII: SHORT TERM USES VERSUS•LONG TERM PRODUCTIVITY x. The adoption of the Oroville Airport Land Use -Plan and.the ,implementation,of the plan by the.City of Oroville and -Butte County' • thr'oug'h General Plan revisions and,the-adoption of appropriate zoning ' will result in a small reduction'of the amount of land planned foi-^ industr'ial,and rural residential uses. The affected areas are those located in the. clear zones. In contrast, the Airport Land ­ Use Plan fs, •intended 'to protect the •airport from incompatible surro'und'ing uses and to promote the provision of 'improved services and jaci.lities .at •t1,ie airport..' A well -protected airport prdviding.services and facilities better than those now available will stimulate comme•rcial'and industrial growth in the.area ' ' and`, 'as a result, residential growth will increase. . S } � 44 . . ` IX. GROWTH -INDUCING IMPACTS OF THE PROPOSED ACTION The adoption of the Oroville Airport Land Use Plan will foster growth in, a number Of ways. Encouraging `the growth,land development of industrial and commercial areas by providing an adequate, -desirable airport will facilitate increased residential development within the.entir'e area by generating increased need Limiting residential densities in areas subject,to high.noise levels, thereby assuring ,that residential units are located` in -a -good environment; may attract additional populations. The provision of°an 'efficient and safe airport for sport flying will add to,,the area's attractiveness. The proposed Airport'.Land'Use. Plan was not designed specifically to encourage growth'in the Oroville area, but to provide adequately for anticipated increases in airport. activities. Providing for expected increases will encourage additional commercial and industrial activity.. Jobs created by such additions will attract additional population, which will in turn add to theuseof the -airport. Cumulatively, provision of'a safe, well-planned airport will be growth -inducing. 36 X ORGANIZATIONS, -AGENCIES, DOCUMENTS AND' PERSONS CONTACTED City of Oroville, Public Works Department, April -May, 1985- City of Oroville, General Plan Revision, February 1983 -Butte County, General Plan Land Use Element, revised March 1984 'Airport,Land Use Planning Handbook, Department of Transportation,. July 1983 Department of Transportation, Aeronautics Division, May -June 1985 City of.'Orovil'le, General Plan Update for the Oroville Municipal Airport, preliminarydraft, March 1985 City of Oroville, General Plan,for the Oroville Airport, June 1973 U.S. Department of Transportation, Airport Land Use Compatibility Planning, AC 150/5050-6, 1977 Butte�County General -Plan, Noise Element,'March 1977 United. -States Census Bureau, Census Data 1960, 1970, 1980 State of California, Department of Finance, population projection State of Califprnia,'Department of Finance, population estimates County of Butte, Special Census, 1975 County of Butte, 1985-2000: Population, Employment, Land Use Report, March 1982 Butte County General,Plan, Circulation Element, 1984 State of California, Department of Fish.and:Game,. Bob Mapes, March 1985 State of California,. Department of Parks and Recreation,'Hal Bradshaw, March 1985, Butte County Zoning Maps, 1985 City of Oroville Zoning Map, 1985 State of California, Government,Code, Division of Aeronautics, Subchapter 65 Noise Standards, 1979' 37 State of California To State Clearinghouse Office of Planning and Research .; Attention Mr. Price Walker 1400 Tenth Street Sacramento, CA 95814 From DEPARTMENT OF TRANSPORTATION District 3 - Environmental Branch r� Subject Caltrans; District 3, has reviewed proposed Oroville Airport Land Use complement the planning process of ";.'': agencies in the area. .isiness, Transportation and Mousing Agency Date August 9, 1985' File 03 -Birt -70/162 Oroville Airport Land Use Plan SCH 85030514 the draft EIR fo'r' the Plan. The Plan intends to various responsible We understand that an airport land use plan speculates on potential impacts in a general manner and does not address impacts of specific development projects. However, a land use plan should,-to'the extent possible, describe maximum growth scenarios allowed under the plan. This. would help Caltrans to assess impacts to the regional transportation system, including State Highways 70 and 162. As specific projects are reviewed through the CEQA process, we urge the decision -makers to coordinate with Caltrans regarding mitigation measures for -State highway facilities. If there are any questions on these comments, please contact Jeannie Baker, telephone (916) 741-4498. W. R. GREEN District Director By Brian J. Smith Chief, Environmental Branch .4� I D AUG 1.3 WSJ R California 0[(�IJQO Q� O �001M LTTE SIERRA Department of Anthropology G GLENN SISKIYOU Archaeological'\��y7 LASSEN SUTTER �� California State University, Chico Inventory v MDDDC TEHAMA Chico, CA 95929 PIUMAS TRINITY (916) 895-6256 SHASTA Bunte Co. Planning Cann► August 13,. 1985, AUG 14 1985 Mr. David. R. oroville, caytpro;, Associate Planner Butte County Planning Commission 7 County Center Drive Oroville, CA 95965 re: EIR review for the Oroville Airport Dear Mr. Hironimus, Me have reviewed the above Draft EIR for the'Oroville Airport Land Use Plan. Although the Draft EIR contains a section (IV,C.8.) dealing, with the archaeology and.history of the project area, there is no indication that a record search was conducted with the Office of Historic Preservation, nor that any areas of possible impact were inspected by a qualified archaeologist. As such,.the portions of the EIR concerning cultural resources should be considered 'incomplete. If you should have any.questions regarding this review,.please contact our office at your earliest convenience. Sincerely, k Makoto Kowta Northeast Information Center Coordinator R RESPONSE TO COMMENTS RECEIVED;, 1,. .'Califcirnia'Archaeological Inventory, -Information Center, Department, of Anthropology,'.California State -University,' Chico;>' Records on file' in the'Butte County Planning Department received from California.State Undvei^sity, Chico, for previous projects in. the area indicate no known archaeological sites`in♦the plan area. Furaher.•more, the,plan area is of,low•archaeological sensitivity.r It should -be noted that the'!'implementation of^the Airport Land Use Plan will not' directly: impact any. 'property im• the- area, but will direct growth. In all"cases, implekentation-of the plan will result in'less intense -development than that now permitted under existing zoning • 2. California Department of Transportation, District 3 .^ Maximum growth potential"in'the plan.area is outlined in Exhibit.•2, on pages .14 through 17 of Draft Oroville, Airport'"Lafid, Use Plan as revised August 19,'1985. s ! • tom-. � t r �r. ' Co. Planning Comm. JUL 5 ,0 r•., , . 1985 HJT ea l �alale .inve8h» enla+ ` * f'++' ` r ��! �lOYi�iBa Qfifornid * ''Commercial Jncivalrial ti k*'$ *�OtX, 1310 ,,//7� r ®roville; -Ca., 95965 916)' 534=7581 July 3,'1985 Mr. David R. Hironimus,'Associate Planner Butte County Airport Land,Use Commission 7 County Center Drive Oroville.,California 95965 , Rei File No. 85"40, Log No. 85-02-01-03 Oroville Airport Land.Use Plan Dear Mr. Hironimus, Thank you for the,opportunity to review and comment on'the Draft Oroville'Airport Land Use Plan a_ nd .Draft Environmental Impact Report. I will primarily limit my comments to clear zones. As the plan suggests, land uses in'clear zone areas should be those which will minimize potential loss of life and property in the air and on the_ ground and limit exposure to objectional sound. In the past.the City of Oroville has sought to obtain Avigation Easements or clear zone air space over•and-above both the northerly and southerly clear zone areas. ; Letters to your office in July of 1981,,relating to the Phil Rauch proposed rezone of one of the -southerly -clear zones pointed out that the State Division of -Aeronautics and..Department of Evnironmental Health did not support the use of,avigation easements for achieving noise and land use compatibility. Such easements'only help resolve certain•legal responsibilities but do nothing to'alleviate the noise problem. As long as -development is allowed in clear zones, whether in or under avigation easements, structures and people may be. present and that is not clear zone which by FAA definition is a cleared field with restricted access under the approach slope from the primary runway end•out to -the point where•the approach slope is`50 feet above ground level.. The only, way ,to' properly adn'permanently• assure the safety of. '. people and property from accidents,.involving aircraft,n1'ding' or taking, off: and", -,to- minimize xadverse land uses -In7 clear -zones. is to make the clear . zones airport°`property with no structures ` - or people. allowed. - ,_ i i Every study, Environmental Impact Report, Pre -zone -Rezone -and ..General Plan Land% Use. `Change. ,in'�.the area of the Oroville Airport has reached the same,•'conclusion t, ACQUIRE' THE, CLEAR ..ZONES IN _ FEE TITLE , I have thoroughlystuOied•:every,docum nt available.regarding, -• this, Airport -and I� haves never'seen one ,the .advocates - development s • or subdividing of. toe clear zones. In order that -more' people may•obe.made' 'aware of -the fact- that - acquisition of clear`•zones :in fee title is not .something that l is new or dreamed up by the,Airport'Land Use Commission, I have attached .some excerpts ,from public documents that I have. assembled for -you to.include in your reports. Everytime I reread these- documents' -I .find, myself asking the.__, same questions, Does, anyone "ever read these letter_ s 'and reports? -Are these studies and guidelines for a purpose or just to fill .file cabinets? Does= anyone_ have, the authority to enforce .environmental guidelines?: Does'•anyone have the capabilty-arid authority to make a decision'to.protect the Oroville Municipal ' Airport by. acquiring fee title to the clear zones? ',Does,anyone even understand.what•a clear'zone is supposed to be?' Your Land. Use Plan and Dr`aft.Environmental Impact Report are very thorough "and you, your staff and the Airport Land Use Commission are to "be commended -,for an `excellent- job .well .done.. .If the decision -makers and responsible elected officials' are •",as conscientious as you and the Airport -Land Use Commission have been, possibly we will finally see some progress made toward permanently making the clear zones -part of the airport. `Sinter yours, r de oco y Buffo CO. Manning Comm, EXCERPTS AND 2UOTES FROM PUBLIC' -.DOCUMENTS JUL', 5 1985 orovale, C."torni'm "...we, h ' ighly recommend fee acquisition,,,," Letter from Frederick M. Isaac,,Chief,,Airport Field Office to City of Oroville dated August 1,.-1975. "...In Airport land acquisition projects, especially clear zone land areae.we strongly recommend fee title acquisition..." °..,.we Urge y6u-to . immediately pursue fee acquisition before conditions change..." Letter from Michael J. Mavtakis, Chief, Airports. -Field Office to City of Oroville dated February 17, 1981. ."...On July 30, 1979, the City of Oroville accepted.a Grant ,agreement with -the United States off -America for acquisition of approximately 2.6 acres of clear .zone ... "...To date, only 2.31 acres of.this'area have been acquired.,.." '",,,Long periods of inactivity complicate'execution; especially, with land acquisition.and may jeopardize programming of future projects,,' Letterfrom Michael J. Mavrakis'.. Chief,.Airports Field Officeto City of Oroville dated December, 8, 1982. "...This office does not support .the use ofIvigation.easements for achieving noise.and land use compatibility,-,," "...Therefore.,control of these areas 'is essential,.and it is preferably acquired by purchase of the land fee title..." Letter from Mark F. Mispagel, Chief, Division of Aeronautics to County of Butte, July 9. 19810 Open spaces should be provided in the areas specified as C'i;ar zones at the north . ends of both runways'o irregardless-of the prezonings for the annexation parcel,.."., Draft EIR-by'City -,of,Oroville for Thermalito.West Prezone and Annexation certified.JanuarY 30, 19790 ",,.Airport clear zones shall not be developed..." 0. , *.The city shall acquire ownership to clear zones as soon 'as .Possible..,,".. EIB for. Amendment to Orov'ille.General , Plan' dated -February'.1983:. 4 v (Excerpts and Quotes from Public Documents,•Page two) i "...Airport clear zones shall not be'developed..." ? ... The City shall acquire or otherwise control clear -zones as soon as -possible..." Draft EIR•for Prezoning of General Planning Area by City of Oroville dated June.1983. "...The City shall by 1984 acquire ownership to all clear zones necessary to operate -the airport in'a safe efficient manner through the year 2000...," Oroville'General Plan published.June 1984 ...The clear zone is defined as land under the approach slope from the primary surface _end out to the point where the approach slope is 50. feet above ground..." FAR Part .152, FAA Airport Aid Programs, °... The City of Oroville should begin negotiation with landowners who presently own land in each of the Oroville Airport clear zones to either purchase this land or trade land which the City now.owns for.that land located in the clear zones..." Draft Oroville Airport Land Use Plan 1985. ",..The_ City of Oroville indicated'a clear zone area and an industrial area'in the same location ... °' ..."....Adoption of. this plan will require similar changes in the Butte County General Plan to show clear,zone areae..." "....Airport clear zones have been designated pursuant to Federal Aviation Agency Guidelines: Most of the clear zones are .under private ownership. The designation effectively minimizes the allowable uses of the property in order to preserve. the public, health and safety. In the same instance,- the designamtion clearly reduces the value of -the property to the current owner if the public health.and safety are disregarded.,." "...The City shoul.d...immediately. acquire easements ' or..title to the clear zones sites. The Federal Aviation Administration will assist. -in the funding and acquisition of clear zone areas..." Draft EIR for Oroville Airport Land Use Plan dated June 1985, "...RESOURCE MANAGEMENIN This category includes public and private lands to be used for grazing, orchards, wildlife.habitat, recreation, watershed protection.and airport clear zones... U! i i FJ RESOURCE- MANAGEMENT: (cont. hued) Description, on .previous page: from- Oroville General Plan published'June'1984, .The new -.land use designation, Resource Managoment,a,°' ,,Airport clear zones have been so'designated pursuant.to Federal'Aviation Agency Guidelines. 'The clear, zones 'are`under private ownership,- The designation effectively minimizes the allowable -uses.* of the ':property in order to preserve the public helth and•safety,. Inttie same instance® the designation clearly reduces -the value, of :the property to the current owners' if the public health and safety are disregarded.'.o°'. .©,Mitigation #8Es The.'City-should immediately acquire easements in .title. to the clear, zones_ sites; . ,,The Federal Aviation -Administration will assist in the f.undirag!.and'acquisition•.of clear, _zone: "areas,,.. "Final ETR for Amendment to Oroville General Flan dated February • 198.3, ,The presence of an,Me2 zone adjacent to: -residential areas and.the. Oroville Municipal Airport -represents the single most ,.significant' -impact upon the environment determined,'during the stucy, . The -M-2 zone appears inappropriate,'for the following reasonst: , .,Some industrial activities permitted in the M-2• zone could significantly degrade regional air quality'. 2. Risk of explosion orrelease . of± hazardous substances could -occur from industries permitted in the M-2 zone, 3e Activities in•the M-2 zone may -have water requirements overtaxing' groundwater`ssupplies , ' 4, The 'propsed M-2 .zonae conflicts with the Butte County General. Plan designation for the 'site; 5• A higher potential for"a serious or fatal accident exists from the resulting higher concentration of persons in •M -s2 'tones within :or near airport runway ,Approaches . b.; The potential for a public heal.th, hazard, exists..froia excessive noise levels due :to aircraft concentrated `'(Excerpts and Quotes from Public Do.cuments,.Page four) be (continued). activity within.areas of heavy concentrations of persons in or near the runway approaches..,.° Draft EIR -for Thermalito West Prezone.and-Annexation® certified January 3.0,.1979. "...PROJECT, DESCRIPTION: Amend the' General Plan -Land Use Element" from Resource Management to Industrial.. 1; The project will not have asignificant-effect on the enviroment. 2. -A Negative Declarationwas prepared for..this• project pursuant to the provisions of CEQA. , 3. Mitigation measures wore not made a condition of the : approval of' this project. 4. A State of Overriding Considerations was'not.ado,pted for this project. We'find-that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION is hereby adopted. 'Refe.r to Environmental -Impact Report,.certified on January 30 P, 197.9 .,NOTICE OF ' DETERMINATION filed October 1'7,. 1984 -by City of Oroville' with; Butte ,County Clerk. "...The applicant proposes to divide a 10 acre parcel zoned M-2 into, 14 lots. " '. B. I move.. that tentative industrial subdivision via parcel map submitted'by.`Gerald de Roco•for'AP NO. 30-23-0-135 ' be approved finding'. that -it complies with the Zoning and Subdivision Ordinances and.will not adversely affect the General Plan, a A. Z move that. a Negative Declaration of Environmenthl Impact -be prepared..." Recommendation in City of Oroville'Planning Commission Staff Report for PUBLIC HEARING June 10, . 1985.. . ...The M-2 zoning allows many uses.which produce smoke, dust,. and bright lights` and could create hazards for aircraft operations. (Excerpts and Quotes from Public Documents, Page five) "...Taken together, the potential aircraft hazards which may 'result from the heavy industrial uses allowed by the M-2 zone nuke'that classification inappropriate for any-location close to the airport,,-particularly under the glide path-of the long i runway 2,000 feet .from touchdown. Staff recommends that the Commission'find that-M-2 zoning is not appropriate for this•location'because,of impacts on.airport operations ... and.that this project be denied.,. ' City. Of Oroville Planning Commission Staff Report and.Initial 'Study for Rezone request.by George Kundikoff dated March 14, 1983. i �.,.. (a) The EIR requirement-it the heart o.f.CEQA. (County of Tnyo v. Yor , 32 Cal. App. 3d 79 .i (bj The EIR serves notonl toprotect-the environment but also to demonstrate to the publIc that it is being protected. County.of Inyo v. Yorly, 32 Gal. App 34.795.) (c) The EIR is.to inform other aovernmental a encies and the ublrc !nerallv of the environmental impact of a proposed ro ect. No Oil,,Inc. v.. City of Los Angeles, 13 C. 3d . (d) The EIR is to demonstrate to an apprehensive citizenry that the agency has in fact anal .zed. and considered the ecological implications of its action.Pejo llee ex rel Department of Public Works v. Bosio, X67 Cal. App. 3d 95. (e) The EIR process will enable the public to determine the environmental and economic values of their elected and and appointed officials thus allowing for appropriate action come election day should'a majoritE of the voters dila ree. People v. County.of Kern, 39 Cal. App. 3d 30.e (f) CEQA was intended to be interpreted in such manner as to afford the fullest possible protection to'the environment within the reasonable scope of the statutory Zan ua em friends of Mammoth v.,Board of Supervisors, 8 C'e 3d.2 7. AMENDMENTS ADDING Section 15011.5 to STATE EIR GUIDELINES.' i ;7-P A-PP.'ENDIX 2" { 'CLL�(9Q ZDl7� TRERMALi70 ' �FOREB4r -NORT# - I 4 L. • ° � NE SON- f • H 1 t �FNERAIAL/TO-'FOREB)OY- soclrH %f. NA A NOu E GRAN ' G. .AV s 5 ,. i .AVENUE ,y 4 W 00 I- �wil/I% AVENUE 4yP ' LJMA...E. � J LL , OVILLE DAM BOULEVAR - - �- Y�, a-'�• OR VILLE R4MBOULEVARD 'WEST MN 4 _ IY Al Q T ev .Q •� f - .. • r •.•, isSli m7 no 1y,�(U76 I- C, ' Appendix.4 NOISE CALCULATIONS. y ' Runway Use.Assumptions y `` -- Runway 01 will be,the ILS runway -- 250,000operations/year in 2000 w' _ -- 100% of .commercial 'jet activity on. 01 -1 9 20%. of coinmercial.jets use 01 approach/departure - 80% of'commercial jets use 19 approach/departure . t - 5 commercial jet operations/day Operations,durng 24-hour period (jets) Day - 80%,-(0700-1900). S ' Evening 20% (1900-2200) , Night 07., (2200-6700 next •day) - Business•Jets a; 807. takeoff and approach,'.Runway 19- 20% takeoff and, approach,,-Runway 01 r' rGe'neral Aviation Runway 30': - 30% i 4 Runway 19 - 407 Runway' 1 2 -• 30% Runway - 01 " - 0% , CNEL Contour Worksheet Takeoff X or Girnnrt (lrnvi P Flight Track01 Landing X Date 5 11 .8�3 Aircraft Type Number of Flights(1) Weighted Tota1(2) Equivalent Aircraft Factor(3) Weighted Total 4) EquivalenEquivalent'Flights( Day Eve. Night Jet 2 -Eng. Tuibofan (DC -9, 737) Np INE NN N FT -or FL NT oc NL 0.8 0.2 0 1.4 1.0 1.0 ----------- - --- 1.4 -- 1.4 3-Eng. Wide Body (L-1011, DC-10) ----- -- Business Jet — ---- -- < 200 HP _— - —_ Business Jet 1 Falcon. 1 0 0 1.0 1/3 1/10 0.35 0.1 _ _ 500-2_000 H P - > 2000..H_P.. 3 Turboprops Total Equivalent Jet Aircraft (J) 1.7 1.5 Propeller (Total Engine Horsepower) < 200 HP (as si. me d) 50 50 �X 200-500 H P. - _ _ 500-2_000 H P - > 2000..H_P.. 3 Turboprops Total Equivalent Propeller Aircraft (P) - 50 r: 50 Total Equivalent Flights (J + P)_----__ 51.7_ 51.5 - Percent Jet Flights 100xJ/(J + P) 3.3% 2.9 0 CNEL Closure Distance, ft(5) 65 6400 3600 70 Notes (1) Day = 7 AM-7PM; Evening = 7 PM -10 PM; Night = 1-0 PM-7AM. (2) Weighted number N = ND + 3 NE + 10 NN (3) See Table 1 For FT or FL for jet aircraft and Table 2 for propeller aircraft (4) NT = FT times N (or FT x N). Similarly, NL = FL x N (5) For closure distances, see Figure 2 for takeoff fl-ights and Figure 3 for landing flights.. (Use Table 3 for zero jet operations) • 'Airnnrf 0r(-11Ti 1 1 A CNEL Contour Worksheet Flight Track lg Takeoff X' or Landing X Date/�, 1 1 / -3 Aircraft Type Number of Flights(1) Weighted Toto, l(2). Equivalent 3 Aircraft Factor) Weighted Total (4) Equivaleni Flights Day Eve. Night. Jet 2 -Eng. Turbofan (DC -9, 737) ND NE NN N FT or FL NT at NL 3.2 0.8 0 5.6 1.0 1.0 5.6 5.6 3 -Eng. Wide Body (L-1011, DC-10) --- Business Jet Total Equivalent Propeller Aircraft_ .(P) _ 190 190 Total Equivalent Flights (J + P) _ 195.93 195 Percent.Jet Flights 100xJ/(J + P) 3.0% Business Jet 1 Falcon 1A 0 0 -1.0 1/3 1/10—,_-Q-. 33 Total Equivalent Jet Aircraft (J). I 5.93 5. .7 Propeller . (Total Engine Horsepower) < 20YH P 200-500 H P —342— 109 - - 27 —0- ----19 0 1.0 1. 0 _-,Lg.0- 500-2000 H P > 2000 H P Total Equivalent Propeller Aircraft_ .(P) _ 190 190 Total Equivalent Flights (J + P) _ 195.93 195 Percent.Jet Flights 100xJ/(J + P) 3.0% 2.9% CNEL Closure Distance, ft(5) 65 7900-._ 7000 70 Notes (1) Day = 7 AM-7PM; Evening = 7 PM -10 PM; Night = 10 PM -7 AM (2) Weighted number N = ND + 3 NE + 10 NN (3) See Table l for FT or FL for jet aircraft and Table 2 For propeller aircraft (4) NT = FT times N (or FT x N). Similarly, NL. = FL x N, (5) For closure distances, see Figure 2 for takeoff flights and Figure 3 for landing flights. (Use Table.3 for zero jet operations) 'EEEj • • CNEL Contour Worksheet Takeoff X or Airport Oroville Flight Track 3p/, 12. - Landing X Date 5/11/:83 J Aircraft Type Number of Flights(1) Weighted g Total(2) Equivalent Aircraft Factor(3) Weighted Total 4) Equivalent Flights( Day Eve. Night Jet 2 -Eng. Turbofan (DC -9, 737) ND NE NN N FT or FL NT at NL 3 -Eng. Wide Body (L-1011, DC-10) Business Jet Business Jet Total Equivalent Jet Aircraft (J) Propeller (Total Engine Horsepower) 90% 8% 2% < 200 HP 90 8 2 134 1.0 1.0 134, 134 200-500 H P ---------, - - ---- ---- -- . _ 500-2_000 HP > 2000 H -P - ---- -- — -- k Total Equivalent Propeller Aircraft (P) 134 134 Total Equivalent Flights (J + P) 134 134 Percent Jet Flights 100xJ/(J + P) 0 0 CNEL Closure Distance, ft(5) 65 2720 1590 70 Notes (1) Day = 7 -AM-7PM; Evening = 7 PM -10 PM; Night = 10 PM-7AM (2) Weighted number N = ND + 3 NE + 10 NN ii (3) See Table 1 for FT or FL for jet aircraft. and Table 2 for propeller aircraft (4) NT = FT times N (or FT,x N).' Similarly, NL = FL x N (5) For closure distances, see Figure 2 for takeoff flights and.Figure 3 for landing flights. (Use Table 3 for zero jet operations) •� APPEND [ X S i �/• COUNTY OF BUTTE. ENVIRONMENTAL CHECKLIST FORM (to. e completed by Lead Agency) F g 85-40 L 85-02-01-03 BACKGROUND AP # Various 1. Name of proponent Oroville Airport Land Use Plan 2. Address of proponent and representative,(if applicable) Butte County Airport Land Use Commission 7 County Center Drive Oroville, CA 95965 3. Project description The Oroville AirrnQ Lt—Environs ' MANDATORY FINDINGS OF SIGNIFICANCE YES MAYBE NO a. Does the project have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self- sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or.animal or eliminate important examples.of the major periods of California history or prehistory? _ b. Does the project have the potential to achieve short-term benefits to.the detriment of -long-term, environmental goals?' (A short-term impact on the environment is one which occurs in a relatively brief period of time while long-term impacts will endure into the future.) c. Does the project have impacts which are individu- ally limited, but cumulatively considerable? (A project may impact on two or more separate resources where the impact on each resource is relatively, small, but where the effect -of the total of those impacts on the environment is significant.). _ d:• Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? _ DETERMINATTON (To he.cbmplet.ed by the Lead Agency) On the basis of this .initial evaluation: _ I/WE find the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared. I/WF•. find that although the proposed project could have a signifi- cant effect on the environment, there will not be a significant effect in this case because the P1ITIGATION MEASURES described on the.attached sheet have been added to the project. A NEGATIVE DECLARATION will he prepared. I/WE find the proposed project MAY have a significant effect on the environment., and an ENVIRONMEN`fAL,1MPACT REPORT is required. DATE February 27, 1985 COUNTY OF BUTTE, PLANNING DEPARTMENT David R. Hironimus Associate Planner Reviewed by: IV. ENVIRONMENTAL *ACTS xp anations of all ''yes" on attached sheet(s)) •--- and "maybe" answers are required 1. EARTH. Will the proposal result in significant: a.Unstable earth conditions or in changes in geologic substructures? b. Disruptions, displacements, compaction or overcovering of the soil? C. Change in topography or ground surface relief features? d. Destruction, covering or modification of any unique geologic or physical features? e. Increase.in wind or water erosion of soils, either on or off-site? f. Changes in deposition or erosion of beach sands, or changes in siltation, deposition or erosion which may modify the channel of a river or stream or the bed of the ocean or any bay,' inlet or lake? g. Loss of prime agriculturally productive soils, outside designated urban areas? h. Exposure of people or property to geologic hazards such as earthquakes, landslides, mud- slides, ground failure or similar hazards? YES MAYBE NO XC_ XC_ X X X e� G 2. AIR. Will the proposal result in *substantial: a. Air emissions or deterioration of ambient air quality? X b. The creation of objectionable odors, smoke or fumes? c. Alteration of air movement, moisture, or temperature, or any change in climate, locally or regionally? X 3. WATER. Will the proposal,result in substantial: a. Changes in currents, or the course or direction of water movements in.either X marine or fresh waters? b. Changes in absorption rates, drainage patterns, or the rate and amount of surface runoff? X c. Need for off-site surface drainage improve- ments, including vegetation removal, channel- ization or culvert installation?, X d. Alterations to the course or flow of flood waters? �C .e.. Change in the amount of surface water in any water body? f. Discharge into surface waters, or in any alteration of surface water.quality, including but not limited to temperature, dissolved ozygen or turbidity? g. Alteration -of the direction ox rate of flow of ground waters? h. Change in the quantity of ground waters, either through direct additions or with- drawals, or through interception of an. aquifer by cuts or excavations? i< i. Reduction in the amount of water otherwise available for public water supplies? �C j. Exposure of people or property to water related hazards such as flooding? -2- 9. NATURAL RESOURCES: Will the proposal result in su stantial:. a. Increase in the rate of use of any natural resources? %< b. Depletion of any non-renewable natural resources? 10. RISK OF UPSET. Will the proposal involve: a.. A ris_ o explosion or the release of hazard- ous substances (including, but not limited to, oil, pesticides, chemicals or radiation) in the event of an accident or upset conditions? %< b. Possible interference with an.emergency response plan or emergency evacuation plan? 11. POPULATION. Will the proposal alter the location, istri ution, density, or growth rate of the human x, population? 12. HOUSING. Will the proposal affect existing housing, or create a demand for additional housing? -3- • YES MAYBE NO 4. PLANT LIFE. Will the proposal result in substantial: T7 ange in the diversity of -species, or number of any'species of plants (including trees,• shrubs, grass, crops,.and aquatic plants)? b.* Reduction of the numbers of any unique, rare or endangered species of plants? X c. Introduction of new species of plants into an .area, or in a barrier to the normal replenish- ment of existing species? d. Reduction in acreage of any agricultural crop? S. ANIMAL LIFE. Will the proposal result in substantial: a. C ange in the diversity of species, or numbers of any species of animals (birds, land animals including reptiles., fish and shell fish, benthic organisms or insects)? X b. Reduction in the numbers of any unique, rare or endangered species of animals? �C C. Introduction of new species of, animals into an area, or result in a barrier to the migration or.movement of animals? X d. to existing fish or wildlife ,Deterioration habitat? 6. NOISE. Will the proposal result in substantial:• a—increases in existing noise levels? X b. Exposure of people to severe noise levels? x 7. LIGHT AND GLARE. Will the proposal produce signi icant.light and glare? 8. LAND.USE. Will the proposal result in a suFstantial alteration of the present or planned land use'of an area? 9. NATURAL RESOURCES: Will the proposal result in su stantial:. a. Increase in the rate of use of any natural resources? %< b. Depletion of any non-renewable natural resources? 10. RISK OF UPSET. Will the proposal involve: a.. A ris_ o explosion or the release of hazard- ous substances (including, but not limited to, oil, pesticides, chemicals or radiation) in the event of an accident or upset conditions? %< b. Possible interference with an.emergency response plan or emergency evacuation plan? 11. POPULATION. Will the proposal alter the location, istri ution, density, or growth rate of the human x, population? 12. HOUSING. Will the proposal affect existing housing, or create a demand for additional housing? -3- • • ' YES MAYBE NO 13. -TRANSPORTATION/CIRCULATION. 'Will the proposal result in: a.* Generation'of substantial additional vehicle . movement? X b.' Effects on existing parking..facilities, or demand for new parking? c. Substantial impact on existing transportation systems? .d. Significant alterations to present patterns of circulation.or movement of people and/or goods? X e.•, Alterations to waterborne,.rail or air traffic? f. Increase in traffic hazards to motor vehicles, bicyclists or pedestrians.? X 14. PUBLIC SERVICES: Will the proposal have an effect. upon, or result in a need for new or altered governmental services: a. Fire protect -ion? b. Police protection? k c. Schools? d. Parks or other recreational facilities? e. �4aintenance of public facilities., including roads? x f. Other governmental services? > 15. ENERGY. Will the proposal result in: a. Use of substantial.amounts of fuel -or energy? b. Substantial increase in.demand upon existing sources.of energy, or require the: development of new sources of,energy? X 16., UTILITIES. Will the propsal result in a need for new systems, or substantial alterations to the following: a. Power or natural gas? X b. Communications systems? C. Water availability: y d. Sewer or septic tank? X e. Storm -water drainage? f. Solid waste and disposal? jc 17. HUMAN HEALTH. Will the proposal result in,: a. reation of any health hazard or potential hearth hazard (excluding mental health)? x b. Exposure of people to potential health hazards? 18. AESTHETICS. Will -the proposal. result in the obstruc on of any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically offensive site open to public view? • . YES` MAYBE NO 19. RECREATION.:, Will the proposal result in an impact upon: the quality or quantity, of existing recreational - opportunities? X 20. CULTURAL RESOURCES. a. Wll:t e_proposal result in the alteration of or, the destructionof'a prehistoric or, historic.archaeological site? b. Will the proposal result in adverse physical or aesthetic effects to a -prehistoric or. historic"building, structure or. object? }� c. Does the proposal have the potential to cause a physical.change which would affect unique - ethnic cultural values? x d. Wi1l the proposal restrict existing religious -oi".sacred uses within the potential impact area? V. DISCUSSION OF ENVIRONMENTAL EVALUATION. File # 85-40 See attachment -5- 9 DISCUSSDDN{}F_ENV ATIOm` File # 85-40 This project is the for' lation and eventual adoption of the Oroville Airport Area LandUse Plan pursuant to Public Utility Code Sections . 21674 through 21675. The,proposed plan establishes planning boundaries around the Oroville Airport area.pf influence and sets ^ forth appropriate land.use including building height restrictions to the extent:that such lgnd is,not already devoted to incompatible uses. While this plan may be reviewed and modified more often, the noise contours set forth in Exhibit 1 or is projected for airpor' useage projected to the year 20V0. . The Oroville Airport haV been in existence for many years, and adoption of this plan will have very fewi if any, direct impacts on the environment'. The following items discussed in the checklist deal primarily with the planas it relates to increased air traffic over the years and airport^improvementsAecessary to handle thatvtraffic. 1b,c: The plan.under consideration provides for increased commercial air traffic including small jeV operations on Runway 01 (the runway running from northeast to southwdst). Increased use of this runway by ' larger, heavier aircraft may require extension of the runway to the southwest. The clear zone planned within this document assumes this runwayextension. The runway extension will result'in considerable grading, leveling, paving and other overcovering of the ;oils. Any impacts associated with such a project would be addressed at the time of the review of that specific project. 2a,b: This plan provides for the increase in use of the airport by heavier aircraft including multi engine and jets. Use of the airport by such ' aircraft will increase emissions which.will deteriorate air quality in the area and b^objectionable due to reAsons of odor and aesthetics. ' 4d: If implemented, this plan willyrovide for the conversion of some a'gricultural land into urban uses. These changes are already provided for in the existing General Plan adopted by both the City of Oroville and the Count` of Butte. 6a,b: Increased aircraft traffic provided for by this plan will increase existing noise.levels and expose people and existing homes to increased levels which may be severe on occasion' 7: Ai small amount of additional light and glare may be produced due to increased night operations of aircraft utilizing the airport. ' Appendix F - Page 6 8: At the present time, the Butte County General Plan provides for Low Density Residential uses at±he south end of the airport (up to 4 dwelling units per acre). If implemented, this plan will reduce those densities to 5 to 10 acres per dwelldng unit. The north end of the runways of the OrovilleAirport is presently planned for Lbw Density ' Residential uses. The City of Oroville indicates aclear zone'area and an industrial area in the same location. The land in question is currently within the City limits of Oroville. Adoption of this plan will require similar changes in the Butte Covnty General Plan to show clear zone areas and designations reducing the density of human population within these areas. 10a: The increased air traffic provided for by this plan will result in a similar increase in risk of release of hazardous substances in .' the case of aircraft accidents. The plan requires adoption of clear zones which should provide for adequate safety areas in case of accident. It: See item 8. 12: Increase air traffic, as provided for by the plan, will effect existing housing in the area of high impact areas. . 13a: The plan provides for increased air traffic to the Oroville Airport. This would in turn result inincreased vehicular traffic accessing the airport.' ' 13c: The plan provides for expansion of the existing airport. 13e: Increased.air traffic utilizing the Oroville Airport may be required to alter traffic patterns in the area asdevelopment on the. ' ground and air traffic become increasingly incompatible. ' 13f: Increased air traffic on Runway 12 may effect vehicular traffic on State Highway 162 where it crosses through the clear zone area just north of the airport. Because of a displaced threshold this should not be asignificant factor. 14a,b: Increased utilization of the airport may require additional fire and police protection. � ' 14d: The Oroville Pageant Riders Rodeo -rounds is located on Oroville Airport property. Increasedutilization of the airport may require new facilities which may eventually.disrupt or displace the rodeo facilities. � � 14e,f: Increased vehicular traffic accessing the airport may require- additional equireadditional maintenance of public facilities including the airport buildings themselves and road and parking`facilities associated with them. Other governmental services including water and sewer services_ may also require additional maintenance or capactty. - odi� �- �a 7 appe &e # 85-40 15a: •Incr.eased use of the airport will result in an increased use of fuel or. energy during f l i ght..oper ati. ons and vehicular travel to and from the airport. 16a,W At, the present time, nd. power. .or communication facilities are .located aboveground within the required clear zone. However, if the southwesterly extension of Runway OU19 it accomplished, the clear cone will include an area, where existing power Al nes and phone lines', are located lboVeground 'Extension of that cl ear. zone would require. the underground i ng of those , ut. i l i t i 6s a . Such underground`i ng should be' accomplished as soon as practical as the existing vbcant lots are built upon° 19: See item 14de DFHa1kt Appendix F Page 8 Applicant: Butte County Airport' Assessor's Parcel # . Land Use. Plan Var i o6s Log # 85-02--01 File # 85-40 Dr1TA SHEET A F'ro,��ct_Description 1. Type of Project: Adopti. on of Airport. Land Use. l an "2- 'Brief Description: The Oroville Airport Environs' _. Location: All that property located within I to 2 miles of the Orovi. l l e Airport. Centered on the air. part , located. approximately a miles west of Highway 7Q, on the south side of Oro .Dam Blvd. West. ( State, Highway 162Y. 4. Proposed Density of .Development : Ni F1 `. Amount of Impervious Surfacing.a, N/A 6. Access and Nearest Public Road(s): Stite-Highway 162 7. Method of Sewage Disposa•f i N/A. B. Source of Water Supply: N/A. 9. Proximity'.of Power Lines:: In the area 10, Potential for f uKther. l and divisions and development: N/A. %.. Environmental Set�ti nc� ' Phy_si cel _-gO 1.1'_ ogM.eg. 1.. Terrain. a. General, -Topographic Character: Area within the Planning boundary generally flat valley land with some rolling hills and some dredger -tailings. b. Slopes: 0-10% C. Elevations Approxi motel y 100 feet ASL.: to 200 feet ASL d. Limiting Factors: None 2. Soils a. Types and Characteristics: Generally Redding and Rocklin 1 oams, underlain by cobol. es and clay deposits. Poor percolation rates, l i mited agr i cultural 'use. b. Limiting Factors°. N/A . ^. . �- -- � -. . File # 85-40 `^ . ' ' 3. Natural Hazards of the -Land a. Earthquake Zone: Moderate Farthqu'ke Intensity Zone VIII b. Erosion Potential: None to Moderate c. Landslide Potential: None . d. Fire Hazard: Unclassified and Moderate e. Expansive Soil Potential: Generally high 4. Hydrology ` a, Surface Water: Thermalito Afterbay, portions of the Feather River, Thermalito Forebay Power Canal, and miscellaneous dredger ponds within the Oroville Wildlife Area. b. Ground Water: -Generally high groundwater due to the ` Thermalito Forebay and the Thermalito Afterbay and the area around the Oroville Wildlife Area and Feather River. C. Drainage Characteristics: Area generally drains to the Feather River to the southeast and the Afterbayto the southwest. d. Annual Rainfall (normal): 20 to 26 inches per year e. Limiting Factors: None . 5.� Visual/Scenic Quality: Variable, generally good 6. Acoustic Quality: Generally -good except near traffic corridors and the airport itself as well as under approach and departure zones. . ^ 7. Air Quality: Generally good except duripg times of agricultural burning, ' Bi0 10 ac al_Eayiognmyat,_ 8. Vegetation: Native grasses, oaks, riparian vegetation near Feather Riverand the Oroville Wildlife Area. 9. Wildlife Habitat: Small birds and animals common to the valley areas. Waterfowl associated with the Forebay, Afterbay and wildlife areas. ' ' ` ` 10.Archaeologichl ,and Historical Resources in the area: N/A 11. Butte County General Plan designation: Public, Commercial, Low Density Residential and Agricultural -Residential, also Medium Density Residential 12. Existing Zoning: A-2, A -R, P -Q, C-1,4-2, R-3, and R -C, AR -5 and.assorted City of Oroville zoning designations. 13. Existing Land Use on-site: Varied 14. g� Surrbundin A rea: . ` a. Land Uses: Varied, from agricultural to intensive urban uses. b. Zoning:' Varied c, Gen. Plan designations: Varied ' d. Parcel Sizes: Varied . ' e. Population: Population center of Oroville surrounded by suburban us's^and agricultural uses. ` Appendix F (b) ` W • APPENDIX.6 N A A tv _ v e C O O /< o / V Oow � ■ L • c c x SCuCJ ■ �L E C E v o 7 O 3 LZ Ec L N — toE O •� C Uq Q c E G � ■ V ■ = N u � �_ u C G = � > 41 60 CC GGG u ppp 0 r >. 0.1 yO y E u 3 N C ' L ' .+ N 'a> •� w •�� � r ani E V u -at V a• - Z Z i Z a = r Y > � C < ;5 L K C L rft •c � z c 3 � a. u� h Y � O s f f O a 8 V ` f � a w fJ i " V ■ f — Y f = s C a •. srz 3 M C >89 r Z N A A tv _ v e C O O /< y � C / V Oow � A L • c �L E C E v o 7 O 3 LZ Ec L N — toE O •� C Uq Q c E G � ■ V ■ = N u � �_ u C G = C y S.y L_ to 41 60 V ■ V c _ 0 r 2 C = v � ` = C as _ v e C O O /< L 7 F- O 3 LZ Ec toE O as � �_ C G 3 1. C +� O■ v ts c C _v - E c u r E E - r 'o c c C > � C L K C L rft •c � z c 3 � a. u� APPENDIX 7. - YALY AVERAGE°EQUIVALENT SOU? EVELS IDENMFIED AS REQUISM E TO PROTECT THE PUBLIC HEALTH AND WELFARE WITH AN ADEQUATE RARGIN OF SAFETY Code: a- Since different types of activities appear to be associated with difTertnt Icveks, ►dentifi- eation of 7 maximum .level for activity Interference may be difficult except in those arcumstan= where spetch communication is a critical actrvity.,(Sec Figure D-2 for noise'levels as a.funetion of distance wtueh allow satufaetory eommun►eauon.) b. Based on lowest level.. C. Based only on heanng Joss. d. An Leq(gl of 75 d8 may be identified in these situatioris so long as the exposure over the remaining IG hours per day is loiw enough to result ina negligible contribution to the.24-hour averap, i.e., no grtatcr than an Ltq of 60 dB. r Note- Explanation of identified lcvtl for hearing loss: The exposure pcnod which ccs; : ft n • caring k),u at the identified level A a period of 40 years,. •Refers to energy rather than arithmetic averagaL lndoor To Protect Outdoor To Protect Activiry Hes.-ing Lo:: ActMty He.L ing Loss Measure Inter- ConsidmAgainst-a- Both �-� Inter- Consider --a- Against Both Ef- . fcttnee tion. feeu (b) fcrenc tion fects (b) Residential with Out- Ldn 45 45` SS 55 side Space and Farm Residences Leq(24) 70 70 Residcnt.W with No.. Ldp _,: 45 .45 Outside Space (2 4) 70 Commercial I Le"q(24) (a) I 70 I 70(c) : I (a)" 70 I 70tc) Inline Trdrsportation 4q(?4) (8) I 70 I (a) I . Industrial I Ltq�24y(d)I (a) I 70 I 70(c) I. (a) 70 I 70(c) Hospitals Ldn 45 45 55 55 4q(24) 70 70 Educational 40(24) 45.. 45 55 55 L q(24)(d) 70 70 Rcccational.Arcas. I Lcq(14) (a) 70. 70(c) (n) 70 70(c) Farm Land and Ltq(24) (a) 70 70(c) General Unpopulated Land Code: a- Since different types of activities appear to be associated with difTertnt Icveks, ►dentifi- eation of 7 maximum .level for activity Interference may be difficult except in those arcumstan= where spetch communication is a critical actrvity.,(Sec Figure D-2 for noise'levels as a.funetion of distance wtueh allow satufaetory eommun►eauon.) b. Based on lowest level.. C. Based only on heanng Joss. d. An Leq(gl of 75 d8 may be identified in these situatioris so long as the exposure over the remaining IG hours per day is loiw enough to result ina negligible contribution to the.24-hour averap, i.e., no grtatcr than an Ltq of 60 dB. r Note- Explanation of identified lcvtl for hearing loss: The exposure pcnod which ccs; : ft n • caring k),u at the identified level A a period of 40 years,. •Refers to energy rather than arithmetic averagaL i APPENDIX LAND USE COMPATABILITY FOR COMMUNITY NOISE ENVIRONMENTS INTERPRETATION NORMALLY ACCEPTABLE Specified land use is satisfactory, based upon the assumption that any building involved are of normal conventional construction, without any special noise innsala�tion requirements. CONDITIONALLY ACCEPTABLE New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and needed noise insulation features included in the design. Conventional construction, but with closed windows and fresh air supply systems or air conditioning will normally suffice. N'.) tMALLY UNACCEP'i ABLE New.eonstruction or development should generally be discouraged. If new construction or development does proceed, a detailed anaiysi! of the noise reduction requirements must be made and needed noise insulation features included in the design. 2 CLEARLY UNACCEPTABLE New construction or development should gerserally not be undertaken. CONSIDERATIONS IN DETERMINATION OF NOISE -COMPATIBLE LAND USE A. NORMALIZED NOISE EXPOSURE.INFORMATION DESIRED Where sufficient data exists, evaluate land use suitability with respect to a "normalired" value of CNEL or Lein. Normalized values are obtained by adding or subtracting the constants described in Table 1 to the measured or calculated value of CNEL or Ldn. B. NOISE SOURCE CHARACTERISTICS The land use -noise compatibility recommendations should be viewed in relation to the specific source of the noise. For example, aircraft and railroad noise is normally made up of higher single noise events than auto traffic but occurs less frequently. Therefore, different sources yielding the same composite noise exposure do not necessarily create the same noise environment. The State Aronautics Act uses 65 dB CNEL as the critetion which airports must eventually meet to protect existing residential communities from unacceptable exposure to aircraft noise. In order to faciliute lhr purpwes of the Act, orte of which is'to erxourage land uses compatible with the 65 db CNEL criterion wherever possible, and in order to facilitate the ability of airports to comply with the Act, residential uses located in Com- rnunity Noise Expowre Areas gruxr than 65 dE should be diseour. ared and considered located within normally unaccepuble areas. C. SUITABLE INTERIOR ENVIRONMENTS One objective of locating residential units relati.e to a known noise source is to maintain a suitable interior noise environment at no greater than 45 dB CNEL of Ldn. This requirement, coupled with the meawred or uleulaied noise reduction performance of the type of structure under consideration, should govern the minimum accept- able distance to a noise source. D. ACCEPTABLE OUTDOOR ENVIRONMENTS Another comideration which in some communities h an ovrridint factor, is Ilse desire for an acceptable outdoor noise environment. When this is the case, more trstrictive standards for land use com- patibility, typically below the maximum considered " normally acceptable" for that land use category, may be appropriate. COMMUNITY NOISE EXPOSURE Ldn OR'CNEL, dB LAND USE CATEGORY • 55 60 65 70 75 80 t � t RESIDENTIAL — LOW DENSITY SINGLE,FAMILY, DUPLEX, MOBILE HOMES RESIDENTIAL — MULTI. FAMILY ........••• 777 TRANSIENT LODGING — MOTELS, HOTELS SCHOOLS, LIBRARIES, .' CHURCHES, HOSPITALS, NURSING HOMES AUDITORIUMS, CONCERT I I I HALLS, AMPHITHEATRES I SPORTS ARENA, OUTDOOR SPECTATOR SPORTS PLAYGROUNDS, .NEIGHBORHOOD PARKS GOLF COURSES, RIDING !•'•'• • '' STABLES, WATER RECREATION, t CEMETERIES I OFFICE BUILDINGS, BUSINESS .... ... .... COMMERCIAL AND j PROFESSIONAL 1 INDUSTRIAL, MANUFACTURING UTILITIES, AGRICULTURE INTERPRETATION NORMALLY ACCEPTABLE Specified land use is satisfactory, based upon the assumption that any building involved are of normal conventional construction, without any special noise innsala�tion requirements. CONDITIONALLY ACCEPTABLE New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and needed noise insulation features included in the design. Conventional construction, but with closed windows and fresh air supply systems or air conditioning will normally suffice. N'.) tMALLY UNACCEP'i ABLE New.eonstruction or development should generally be discouraged. If new construction or development does proceed, a detailed anaiysi! of the noise reduction requirements must be made and needed noise insulation features included in the design. 2 CLEARLY UNACCEPTABLE New construction or development should gerserally not be undertaken. CONSIDERATIONS IN DETERMINATION OF NOISE -COMPATIBLE LAND USE A. NORMALIZED NOISE EXPOSURE.INFORMATION DESIRED Where sufficient data exists, evaluate land use suitability with respect to a "normalired" value of CNEL or Lein. Normalized values are obtained by adding or subtracting the constants described in Table 1 to the measured or calculated value of CNEL or Ldn. B. NOISE SOURCE CHARACTERISTICS The land use -noise compatibility recommendations should be viewed in relation to the specific source of the noise. For example, aircraft and railroad noise is normally made up of higher single noise events than auto traffic but occurs less frequently. Therefore, different sources yielding the same composite noise exposure do not necessarily create the same noise environment. The State Aronautics Act uses 65 dB CNEL as the critetion which airports must eventually meet to protect existing residential communities from unacceptable exposure to aircraft noise. In order to faciliute lhr purpwes of the Act, orte of which is'to erxourage land uses compatible with the 65 db CNEL criterion wherever possible, and in order to facilitate the ability of airports to comply with the Act, residential uses located in Com- rnunity Noise Expowre Areas gruxr than 65 dE should be diseour. ared and considered located within normally unaccepuble areas. C. SUITABLE INTERIOR ENVIRONMENTS One objective of locating residential units relati.e to a known noise source is to maintain a suitable interior noise environment at no greater than 45 dB CNEL of Ldn. This requirement, coupled with the meawred or uleulaied noise reduction performance of the type of structure under consideration, should govern the minimum accept- able distance to a noise source. D. ACCEPTABLE OUTDOOR ENVIRONMENTS Another comideration which in some communities h an ovrridint factor, is Ilse desire for an acceptable outdoor noise environment. When this is the case, more trstrictive standards for land use com- patibility, typically below the maximum considered " normally acceptable" for that land use category, may be appropriate. ♦ APPENDIX 8 r ( rD USE COMPATABILITY FOR CO1rLIWITY NOISE ENvIRONME"PS CONSIDERATIONS IN A� NORMALIZED NOISE EXPOSURE. INFORMATION DESIRED •When sufficient data exists, evaivatc land use suitability with respect to a "normalistd" value of CNEL or Ldn. Normalised values are obtained by adding or wbtraeling the constants described in Table t to the measured or calculated value of CNEL or Ldn. INTERPRETATION NORMALLY ACCEPTABLE Specified land ust is satisfactory, based upon the assumption that any buildinjs involved are of normal conventional construction, without any special noise insulation requirements. CONDITIONALLY ACCEPTABLE New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and needed noise insulation features included in the design. Conventional construction, but with closed windows and fresh air supply systems or air conditioning will normally suffice. N'YtMALLY UIIACCEP','ABLE New construction or development should generally be discouraged, if new construction or development does proceed, a detailed analysi: of the noise reduction requirements must be made and needed noise insulation features included in the design. CLEARLY UNACCEPTABLE New construction or develoment should gerserally not be undertaken. DETERMINATION OF W01SE—COMPATIBLE LAND USE •B NOISE SOURCE CHARACTERISTICS Th`c land use -noise compatibility recommcnLations should be viewed in relation to the specific source of the noise. For example, aircraft and railroad noise is normally made up of higher sinrle noise "cnts than auto traffic but occurs less frequently. Therefore, different sources yieldihr the same composite noise exposure do not nrccuafily 'create the same noise environment. The State Aeronautics Act uses -6S dB CNEL as the Uiterron which airports must nentually meet to protect existing residential communiOrs from unacceptable exposure IIo •aircraft noise. In order to faclliute the purpus of the Act, one of which is to encourage land uses compatible with the 65 db CNEL criterion wherever possible, and in order to facilitate the ability of 'alrPorts to comply with the Act, residential uses located in Com- att muniryFNoiw E-cpowee Areas Iruter than 65 dE should bie diseour. aced and�comide:red located within normally unacceptable areas. C. SUITABLE INTERIOR ENVIRONMENTS C", obfeeti.e of loeatinr res.Oential unlit relative to a kno.n noise source is to maintain a suitable inimior noise environment at no grtatrr-than 45 d8 CNEL of Ldn. This requirement, coupled with the measured or ealiulatrd noir reduction performance of the type of struEturc under consideration, should govern the minimum accept- able distance to a noise source. D. ACCEPTABLE OUTDOOR ENVIRONMENTS Another considcration which in some communities Is an ovrt6dint factor, is Lhe desire for an acceptable outdoor noise environment. When, this - is tht tax more restrictive standards for land use corn- patlb0isy, typically beio- the maximum con%iorred " normally acceytabit•' few that land use easKory, may be appropriate. COMMUNITY NOISE EXPOSURE Ldn OR CNEL, dB LAND USE CATEGORY SS 60 65 70 75 BO RESIDENTIAL — LOW DENSITY / r SINGLE,FAMILY, DUPLEX, MOBILE HOMES RESIDENTIAL — MULTI. FAMILY TRANSIENT LODGING MOTELS, HOTELS .............. I I SCHOOLS, LIBRARIES, CHURCHES, HOSPITALS, I NURSING HOMES AUDITORIUMS, CONCERT I I I HALLS, AMPHITHEATRES I I - --• .rte — SPORTS ARENA, OUTDOOR SPECTATOR SPORTS PLAYGROUNDS, . NEIGHBORHOOD PARKS GOLF COURSES, RIDING I '• t`.' '. I'.'.'.'•t.'.. . STABLES, WATER RECREATION, CEMETERIES OFFICE BUILDINGS, BUSINESS COMMERCIAL AND PROFESSIONAL INDUSTRIAL, MANUFACTURING UTILITIES, AGRICULTURE CONSIDERATIONS IN A� NORMALIZED NOISE EXPOSURE. INFORMATION DESIRED •When sufficient data exists, evaivatc land use suitability with respect to a "normalistd" value of CNEL or Ldn. Normalised values are obtained by adding or wbtraeling the constants described in Table t to the measured or calculated value of CNEL or Ldn. INTERPRETATION NORMALLY ACCEPTABLE Specified land ust is satisfactory, based upon the assumption that any buildinjs involved are of normal conventional construction, without any special noise insulation requirements. CONDITIONALLY ACCEPTABLE New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and needed noise insulation features included in the design. Conventional construction, but with closed windows and fresh air supply systems or air conditioning will normally suffice. N'YtMALLY UIIACCEP','ABLE New construction or development should generally be discouraged, if new construction or development does proceed, a detailed analysi: of the noise reduction requirements must be made and needed noise insulation features included in the design. CLEARLY UNACCEPTABLE New construction or develoment should gerserally not be undertaken. DETERMINATION OF W01SE—COMPATIBLE LAND USE •B NOISE SOURCE CHARACTERISTICS Th`c land use -noise compatibility recommcnLations should be viewed in relation to the specific source of the noise. For example, aircraft and railroad noise is normally made up of higher sinrle noise "cnts than auto traffic but occurs less frequently. Therefore, different sources yieldihr the same composite noise exposure do not nrccuafily 'create the same noise environment. The State Aeronautics Act uses -6S dB CNEL as the Uiterron which airports must nentually meet to protect existing residential communiOrs from unacceptable exposure IIo •aircraft noise. In order to faclliute the purpus of the Act, one of which is to encourage land uses compatible with the 65 db CNEL criterion wherever possible, and in order to facilitate the ability of 'alrPorts to comply with the Act, residential uses located in Com- att muniryFNoiw E-cpowee Areas Iruter than 65 dE should bie diseour. aced and�comide:red located within normally unacceptable areas. C. SUITABLE INTERIOR ENVIRONMENTS C", obfeeti.e of loeatinr res.Oential unlit relative to a kno.n noise source is to maintain a suitable inimior noise environment at no grtatrr-than 45 d8 CNEL of Ldn. This requirement, coupled with the measured or ealiulatrd noir reduction performance of the type of struEturc under consideration, should govern the minimum accept- able distance to a noise source. D. ACCEPTABLE OUTDOOR ENVIRONMENTS Another considcration which in some communities Is an ovrt6dint factor, is Lhe desire for an acceptable outdoor noise environment. When, this - is tht tax more restrictive standards for land use corn- patlb0isy, typically beio- the maximum con%iorred " normally acceytabit•' few that land use easKory, may be appropriate.