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The major project impacts are summarized in Table 2,1_1, The significance of eaesh imphaet is noted along with the t with ands required o } mpac recommended mitigation measur a significance of each categories without mitigation is also noted. The following impact pact; (ps) potentialre used ly Table 2.1�-1: beneficial impacti ( - not significant impact; or possibly significant impact (an impact Which cannot be precisely 'assessed at this time) and (S) significant adverse' impact. 2.2 ALTERNATIVES EVALUATED The No Project AlI.ernative and the Expanded Project Area Alternative are evaluated' in Section 4 of this report. Under the No Project Alternative,, most of the impacts - of the proposed project would be avoided or substantially reduced However, the No Project Alternative may not be a long term' ed growth inducing activities alternative due to certain existing and plann -which will affect residential demand in the project area. The Expanded Project Area Alternative would involve a larger, area and additional parcels ,Allowing development of 330 new residences (60 more residences than Would be allowed 'under the proposed project). This alternative would incrementally increase the significance of mostimpacts. However, this alternative would be considered more logical and stable than the condition presented by the proposed project. 2, AREAS OF. CONTROVERSY%ISSUBS TO BE RESOLVED Department has identified land use and planning's The Butte County Planning p d and public services as areas of circulation, water quality, Beo._ogy hydrology controversy and potentially significant environmental impacts to be_addresspd in this EIR (see Appendix 13.1)• Public concern in response to the information provided in this Draft EIR will be addressed in the Final EM The primary issues to be resolved involve interpretation of the Greenline Po R " ermination of the'' ]icy as it relates to Special Study Area Number 1 and detthe project, area to _mit ate nitrate contamination o drainage infrastructure in f area groundwater. need for specific sewer and storm x8 r r TABLE 2.1-1, SUMMARY OF PROJECT IMPACTS ANb MITIGATION MEASURES MITIGATION MEASURES t . (Significance After � IMPACT Mitigation) (Significance) LANG bSE PLANNING,._APPLICABLE ,'� FLANS AND 'POLICIES The proposed project would .encourage Not mitigable. ('S) the development of approximately 270 ® new dwelling units in an area of prime �1 agricultural land and would increase the frequency and magnitude of adverse -° land use compatibility impacts with agricultural activities to the north and west. (S) The proposed project would alter This impact is the subject of this Environmental Impact Report. planned land lases in. the project area. of land use Measures to improve infrastructure The resulting pattern designations would not be considered` and services are proposed in other of this report to improve logical or stable. The subject site to be consistent with the five sections consistency criteria..ith �For dexample: appears site designation criteria for the development adequate fire protection.would be proposed land use designation. but inconsistent with provided with the proposed appeiiPs to be conditional toning and development _ mitigation. (PS) criteria. (PS) Development in the project area would Not m titmable. (S) not be consistont with the city's intent to encourage developffient in other locations in the Chico Urban Area. (S) The Amendment of the Chico Area Not mitigable. (s) Greenline would Poster population growth and would remove a constraint area.(S) on growth in the project The proposed General Plan Amendment ' d or recommended. (B) None require - would iaorease the supply of and competition among higher 'priced residential units, (B) S Significant (Adverse) NS Not Significant (Adverse) PS Potentially Significant (Adverde) t. Beriexioial (CONTINUED) R..2 _ M, (CONTINUED) . SUMMARY OF PROJECT IMPACTS 1."�J MITIGATION MEASURES TL13LE 2.1-1. MITIGATION MEASURES (Significance After 1 IMPACT mitigation) (Significance) TRAFFIC pND CIRCULATION Additional traffic generated by the The following measures are recommended by the staff of Butte project would add to the volumes County and the City of Chico to presented in the'Chico Urban Area mitigate the traffic impacts Transportation Study and mould in this section.. incrementally decrease levels of Measurfied es identified in the Butte service at conventional and unconven- Chico. Circulation Element should be tional intersections in Northern implemented, as necessary: to (P5) Access by emergency service trucks) could acquire appropriata funding from vehioles (large fire be hindered by unconventional. developers, the Federal Highway' (such as aid from intersections. (N5) Administration gas tax revenue and funding); and from CALTRANS far appropriate traffic mitigation measures identified in the CATS and in this report. Left turn pockets should be conte strutted and on 'street parking should be eliminated 'tin East Avenue, between Connors Avenuc and Esplanade,-and°on Esplanade, between , Lassen Avenue and Rio Undo Avenue: These improvements sbou7.d be imple- in the .. medted as development occurs �. ts r project area with the ara and v _ " _ objective that these improvement be oompleted,with buildout of the project area: The safety and capacity of the unconventional intersections iii the project area to convey vehicle traffic and emergency vehicles should be evaluated and modified, as necessary. When specific SNS dverse) TSeant (A... se) Not Significant (Adverse) _ (Adverse)- B Ben. eficial PS al y ,Significant (CONTINUED) TABLE 2.1-1 (CONTINUED). SUMMARY OF PROJECT IMPACTS AND MITIGATION MEASURES MITIGATION MEASURES (Significance After IMPACT Mitigation) (Significance) - subdivisions or developments are reviewed by the county, rights of way for each of these intersections should be reserved, as' necessary, as a part of adjacent subdivisions or developments. Realignments should be required on a case by that case basis With the objective , _ all real i ents be completed with buildout of the area. East Avenue should be widened to its ultimate Width including installation of ourbs, gutters and sidewalks by developers with front=- age along East Avenue, (This re- quirement is not the responsibility of the applicants 0but should be implemented as development occurs icinity.) in the project area and ..v Butte County should require the uture p pcrofuture- developersinthe projectarea and developers vicinity to install traffic_ signals at the intersections of East Avenue with. Guynn Iand Nord. installation of, the signals should be completed with, buildout of the project. (NS) Accessnay vehicles (large by emerge See devious mitigation measures for See realignm ent. (NS) unt be hindered by five 'trucks) would (NS) unconventional intersections. S Significant (Adve 'tit' Not Significant (Adverse) pS 'Potentially Significant (Adverse) B Beneficial (CONTINUED) '' 2-4 '(CONTINUED)-. SUMRA RY OF PROJECT IMPACTS AND MITIGATION JAEASURES TABLE 2.1-1 MEASURES IMITIGATION (Significance After IMPACT Mitigation) (Significance) The propos �a? project would allow The standards defined in the Butte County Circulation Element (page d:velopment along narrow substandard and in the Butte County document roads. (FS) entitled Itp vement Standards fog Subdivisions Parcel Ma s and Site 20, Im rovements Pursuant to Cha ter be of the Butte.County-Code should required for the roads in the Project area. The applicable typesfic standards involve road on specific depending d&61opment, proposal3. These N t improvements would not be required r7l,for the proposed General Plan Amendments, but would be required When subdivisions or development is proposed. The City of Chico would request that these roadways 'the city or meet the standards of county, whichever, are more r ■ stringent. (NS) Site design criteria which increase x The proposed prof eMe would allow in the demand opportunities for transit pationa&e incremental increases he CATS Route fore transit servi0e fd�enue should be encouraged if specific development proposals were ' to 1 and along the Ea Corridor: iiijolve clusters of development. � NS) C NS) (Adverse) Beneficial NS Not Significant (AdvErse)tially E8siggnificant Significant (Adverse) B (CONTINUED') s OF PROJECT FACTS AND MITIGATION MEASURES TABLE 2.1-1 (CONTINUED) S(INRMARX MITIGATION MEASURES IMPACT Significance After Mitigation) (Significance) The proposed land usa` intensification Eaton Access to the future extension of Eaton Road should be Provided via. with Nor 1 would encourage e extension of potential to the Po Bell Road. Intersections Gu nn and Alamo should not be *" Road, which,presents make Nord, GLiynn and Alamo 'major north/ Y encouraged unless additional land south connectors. (PS)' use intensification and related occur prior roadray fi �-.�$ m+ .improvements to extension of these roadways. (NS) for conflicts Pedestrian crossings should be considered along East Avenue where increased potential between bicycles, pedestrians, and 'alEast Avenue. i,NS) on8 p rimary pedestrian routes and bikeways meet with East Avenue. motor vehicles special attention should be given, Partridge to safe rxossings near J. (hS) Elementary School. GEOLOGY/�ROLI0 resent a Specific engi nearing design and: teehniQues recom- Site soils and geology P tential. eonstructi'on the soils engineer should moderate shrink/swell po allowable so"-pressure,. mended by into be incorpo rated; as, needed, moderate low erosion potential and seismic Building the croject design. with seismic hazards. (PS) design should comply reAuirmenta of the current Uniform Building Code and.the Recommended Lateral Force - Requirements prepared by the Association Of Structural Engineers Calif orna• Standard construction methods and control measures should be erosion (including dry weather implemented gradin$► erosion control to season plans, revegetationi and devie0s NS Not Significant ( Adv er Je ) S Significant (A dverse) Adverse) B Beneficial ps potentially Significant (CONTINUED) ;x (CONTINUED). SUMMARY OFPROJECT IMPACTS AND MITIGATIONMEASURES TABLE 2.1-1 MITIGATION MEASURES (,Significance After 2 IMPACT Mitigation) i (Significance) - therequirements of the Nitrate Action Plan. Groundwater quality monitoring, as outlined in the Nitrate Action Plan, should be continued to detect potential grottndwater quality' impacts and to identify and implement appropriate mitigation, _. if neressary'. 1 As more information about future development and baseline groundwater - quality conditions in the project area becomes available. The e Nitrates Action P an will involve calculations of the potential increases in nitrate concentrations. as Appropriate mitigation, so•cb mandatory sewer hookups, abd hookups' to Cal. Water facilities, will be identified and implemented, if - necessary. Private Well owners shall allow water quality testinl. g -- - by the county, as needed. (FS) PUBLIC SERVICES AND UTILITI ht of "arcels allowable under llevelopme p One new Well will be required in the Water requi rements. the proposed project Would require _ day. (NS)., area. sha11'belmetal (NS) 66 400 Sa llgns of water per The proposed project would indirect�.ly Butte'County and the City of Chico that new development, allow additional sewage to be generated a require could shouldregaire s a result of the kendmeizt, y to VicinityOf a seh costly extensions of a sewage trunk in the sito proposed General Plan follow the recommendations of the line to prevent n ra oontam sewerage Plan* (PS) #, h (Adverse) NS Not Significant (Adverse) t"l S Significant PS ,Potentially Significant (Adverse) B Beneficial _ - (CONTINUED) r TABLE 2.1-1 (CONTINUED). SO4MARY OF PROJECT IMPACTS AND MITIGATION MEASURES r MITIGATION MEASURES 'IMP'ACT (Significance After (Significance) Mitigation)- �; _ a Butte CountY and the City of Chico should evaluate `the potential for adverse environmental impacts associated with a setter trunk line extension, including impacts related to annexation;: if develop- merit of the project area requires merit t _ service. Septic tank systems should be designed to meet the standards and r-equirements of the !titrate Action V Plan and sewerage study. (PS) " Dee of a dditicnal residential'- Butte Counts should consider cumula- for service: Development ° s would incrementally increase the ` (PS) tive demanels police and develop an appropriate funding • demand for police services. mechanism, such as an assessment- district to maintaim future level of service stanOlards (The r feasibility of this Litigation measure is questionable _because - recent efforts by the county do raise revenues for this purpose- havel been denied 'by voters.) Butte County should require developers of the project area to form an assessment district to pay I for the incremental impact r ($28,600) Per year on poI16,e op services created b the 00osed General Plan Amendment. r r n S Significant (Adverse) NS Not Significant (Adverse) PS Poteltjally Significant (,Adverse) B Beneficial r(CONTINUED) 1 �-g r, i (CONTII7UED) . SUMMARY OF PROJECT IMPACTS: AND MITIGATION MEASURES 2.1-1 TABLE° MITIGATION MEASURES IMPACT (Significance After } (significance) Mitigation) Development of residential uses dthe ue t 475 per parcetinwill the nWestc Fire newl demand project area would increase the demand County Fire Department, Station Benefit Area" to gain t upon the Butte of fire hydrants in fun tire tswiilbserveathe wproject tarean and the lack would create a significant f the area ` safety hazard,. (S) Butte County should seek additional - volunteers to operate Station 42 until Station 43 is'const'ructed. A pressurized water system should be installed to conform to Butte County Fire Department requirements. Hydrants should be placed in appropriatY locations according to county standards defined on page 52' of-the Butte County<Imarovement Standards for Subdivisions Parcel Ma's anis .Site Sm rovements Pursuant' to Chapter 20 of t he Butte County Th of Neal Dow School would 'e capacity Butte County will collect builderts to use for support of the Chita, { be exceeded With the add of the Unified School District. The , students expected to be generated by the ordfied illance allowing fees to be students pment in and outside of collected, has a five year time project area. (S) frame due to a sunset clause. In November, 19841 Butts County failed in its attempt to establish an assessment district to generate additional :ands for nex'elementary schools thdtl are needed for the Chico area. (PS) S Significant (Adverae) NS Not Significant (Adverse) Beneficial PS Potentially Sgniffcant (Adverse) H i (CONTINDED) 2-1 i� TABLE 2.1-1 (CONTINUED). SUMMARY OF PROJECT' IMPACTS AND MITIGATION MEASURES 14ITIGATION MEASURES:' IMPACT (Significance After (Significance) Mitigation) 'f New residential development in the The City of Chico and Butte County the recommendations, project area would increase storm should follow presented in the storm drainage i water runoff and the demand for waterge'eapacity. (PS) study to mitigate impacts associated with storm drainage, (PS) N The_, proposed project would increase the Butte County should implement the Circulation Element Policy to demand for road maintenance on'undex- in the project area. develop a system of off site developed roadways development fees and or development t (PS) agreements for road construction c and maintenance to allow project r y areal roadways to be widened and upgraded as future development ; occurs. The standards defined in the Butte r Count, Circulation Element (page 35) arad :in the Butte County document entitled Improvement Standards for Subdivisions. Parcel Maps and Site 1+ Improvements Pursuant toChapter 20 l of the Butte Count-- Code should be - , requiredfor the roads in the ' project area to reduce maintenance. The applicable standards involve road types R3_3-A--6nd sR5-4 ; depend - ing ,on speoific development 4 A pe,. ; proposals: These improvements would �,y';�Y u �," . i� not rd for the proposed General Plan but vould be required when subdivisions or development is proposed. S Significant (Adverse) NS Not. Significant (Adverse) BEtnefieial PS Potentially Significant ('Adverse) B (cGNTiNt1ED) 2-11 j .1111 TABLE 2�1-1 (CONTINUED)- SUMMI RY OF PROJECT IMPACTS AND MITIGATION MEASURE 1 MITIGATION MEASURES (Significance After IMPACT (Significance) Mitigation) eDevelopment develop a allowed under the proposed Butte County should district to project mould incrementally inereaaa the demand for library, services which countywide assessment library maintain acceptable libraservice ry , .. q ate alread operating below adequate levels (materials, staff, i service levels. (S) operating aours). �. . The proposed projeot would have a. Butte County should develop an "In :minor incremental ,impact -on parks and Lieu" fee program as part of the N(a�ural recreational facilities which Would be ongoing development of a cumulatively significant. (PS) Resources and Recreation Elements) General Plan. for the county i S kgnitidAht (Adverse) NS Not Significanet (Adverse) PS Potentially Significant (Adverse) B Beneficial Rwi2 3. EFFECTS DETERMINED y EDTO BE t SIGNIFICANTSSIBLY T: EXISTING SETTINGIMPACTSAND1"TIGATIQN�SIGNIF t�ASURESICA? .1 LAND USE,_PLANNING APPLICABLE PLANS AND POLICIES EXISTING SETTING Land Uses. Land in the project area is used ,for agricultural and residential purposes. The primary agricultural uses in the area are orchards, but other uses such as pasture land and vineyards are present. Re:!idential uses are located throughout the projectth ext-. side of Rodeo Dying units are located ' Clusters of dwelling in four locations; Drive; (2) along the west end of ;Muir Avenue; (3) along the -south half of Nord Avenue; and O along Bell Road near Guynn Avenue. Land uses surrounding the project area are similar to those within "the project area; however, residential uses increase in frequency and density to the south and east. The main Southern Pacific Transportation Company railroad line forms the project site's western boundary. The "railroad tracks are located. parallel to State Route 32. Industrial and commercial land uses have been developed along both sides of State Route 32 Hest of the project area. Large parcels north of the project, area are used for agricultural purposes. �ricultural Character of the Protect Area and clic nits. The project area and vicinity contain highly productive soils. These soils and other factora, such as climate and the availability of inexpensive water, combine to.make this area and much of Butte County highly conducive to agriculture. The continued viability of agriculture, the ;county's biggest industry, is Ia vital component of the -county's economy.. Both the City of Chico and the Butte county General Plans recognize the importance of agriculture and address the issue with specific land use planning policies and procedures. A primary land .Use planning tool$ hfollowing discussionunderyGenera] Plan poine licipoicyy is described in the es �' p , j y The character of the icultural J.ands within the ro dot area is tMpical of agricultural lands on the edge of urban areas The incremental direct and indirect impacts of urban activity are affecting the economic viability of agriculturalproduotiori. The follOwing direct and indirect impacts affect the viability of agriculture on the project site and increase the, incentive for Property owners to discontinue agricultural production in order to capitalize on the short term' economic gain which can be realized by urban development: smaller parcel sizes, increasing property values, urban nuisances, such'as ,. vandalism, and impacts of agricultural activites on urban uses, such as the application of pesticides and the generation of dist, smoke and noise. Although these impacts are affecting agricultural 'uses on the site; they have not prevented productive use of the project area for agriculture `o the reseht time. me. GeneraX plan Land Ube.DesiAnatiobs, . Butte County's Chico Area Land Use Plan designates the project site Por "Orchard and Field Crops" uses with five acre minimum parcel sizes. Parcel sizes which are Less than 20 acres are conditionally consistent with this designation. kkisting General Plan land use designations in the project vicinity are presented in Figure 3.1-1z One l 31-1 r _ ".1-. .�.^-.+•L_ ��1 �"'. 'u' ' Cyt'-�� i `�.: 'C{ 'ir . -`�QRtJJ EGT SITE — M _ f .77 ZLL Mtbj b-M DENSITY RESIIIENTIAL ORCAtM X`ND FIELD CROPS LN DENSITY RESIDENTIAL - '}..�=•�.:. _--�=�sy � � INDUSTRIAL ' AGRTCVLllJkAL RESIDENTIAL �- VUBLVt r _ EIGuRE 3:]=1 CITY AND COUNTY GENERAL PLAN LAND USE DESIGNATIONS "MOM SCALE IN -TA PROJECT VICINITY ea�rCi-i mcatr�as ��� 2000 family dwelling Per parcel with additional housing for .)n site single equired maximum density for properties subje(it to this employees is the r r designation: Primary uses in this zone involve cultivation, harvest, storage, Processing, sale and distribution of all plant crops, especially annual food crops. The five primary criteria for determining whether an area should be sut)ject to the Orchard and Field Crop designation are as follows: prations• - soil conditions well suited for plant crop oprations; adequate craterSupply; predominant parcel sizes of five acres or more; used for crop production ar secondary uses; and adjacent uses compatible with primary and secondary uses. The three conditional, zoning and development criteria for the Orchard and Crop. uses are: _ .Field.ries predominate existing parcel sizes range from 5 to 10 acres; J a y » _ adjacent to or in the general vicinity of urban :bound if icantly present status of agricultural 'production will not be sign impaired, The six "zoning factors for the Orchard and Field Crap uses are: densities; .... - existing p arcel sizes and dwellng proximity to urban development; effects on adjacent uses; - potential for pest insect breeding; economic viability; - local desires. d Field Crop designs ars tion apps to be The project site's existing Orchard. ary criteria for designating the site and the consistent with the five primary teria. However, the designation o ent 'eri three conditional zoning and devel pm may not be consistent with two of the six zoning factors CeoUsly viability and local desires). Eeoncmic viability was discussed previously under the heading ",Agricultural. Character of the Project Area and vicinitye ti' "local desires" include the desires of local property 'owners, then the existing designation is clearly inappropriate relative to this factor because the project applicants are all local property owners. Zoning. `�hO Project t area is subject to the ioquirements of the Butte County P sof two zoning districts, EA-5y zoning map Com rehensive Zoning Ordinance Number 1?5Q: 'The Butte Coi�inty zAgricultu,re and: indicates that the requirement 3�1�R2.SuThebAn parcelsdentitd fect apply to the area Within the dark border ;in Figure affected by the proposed General :• Plan Amendu►ent are within the Ai Hietrict. The requirements of this zone are presented in Aopehdix Permitted uses are consistent With the General Plan land use The minimum lot area required is designation of,"Oreherd and Field Crop . five acres Cade the ,previous discussion of zoning and development criteria and zoning factors) Man Development Trends and Patterns. Urban development in the Chico area has been dire operties wii=hin the i ure6oted withdPuallooatians�north hsoutheandteast of the city core. existing In addition. to this investment, the,Nitrate Action Plan for the Greater Chico -Urban Area also encourages development in the existing .urban area, particularly within those areas served by the city's sanitary sewer system. The Nitrate Action Plan recommends that development be limited in areas without sewer connections (Butte County and City of Chico, 1985). x Two large private projects, Foothill Park and Rancho Arroyo, have been approved in northern Chico. The Foothill Park development acres of residential and office uses (3,200 dwelling units, 15 percent have been sold) and .244 acres of industrial uses '(Palmeri, 1985), The Rancho Arroyo 'Project includes 750 ,acres of residential uses (44,600 dwelling units, none have been sold at this time) and 25 acres of commercial uses (Palmeri, 1985). Development in southeast Chico has included residential, commercial and, light industrial uses, 'primarily south of State Route 32 and east of Park Avenue. Development west of Chico has been directed toaards infill of:existing parcels planned for 'urban uses by local planning efforts, the lack of sewer service connections, and the city/county Greenline. However, large parcels of underutilized land are available for development within the existing Chico Area Greenline. The population of the incorporated area of Chico was approximately 31,150 in ' 1985 according to state Department of. Finance calculations dated April 29, 1985. The 1985 population accounted or approximately,44 percent of the total population of incorporated areas of Butte County and 19 percent of the total count population in 1985 (see Append 13.7). A summary repcontrolled Y ed Y breakdowns b county population estimates for Janna 1 1985,. including b ort of cont goes housing unit type, estimated vacancy rates, and the average number of per per household for incorporated and unincorporated areas in Butte County, is presented in Appendix 13.8• The population of the incorporated and unineo'rporated "Chico Area" was approximately 64,000 persons in 1985 and was estimated to increase to 102,000 by the year 2000 and to 17T000 after buildout of the General Plan Land Use Map, according to the Chico Urban Area Transportation Study prepared in 1982. Table 3.1-1 presents a more recent population forecast for buildout of the Chico Area. The population of the project vioinity defined as the area north and west of Bell Roadi the Chico Urban Area Traff4d Study)Ais expectedotohincrease rfrom 2jo06 persons to 2,1141 by the year 2014 ('h ioo Urban Area Transportation Study;1982), General PltAh policies. CHICO AREA GREENLZNE The City of Chico and Butte County have established a boundary to define the limits of future urban development which may occur on agricultural lands in the Chico area of Butte County. The Greenline is delineated in Figure -1i The project site is not included within the urban .boundary line, blit has been designated. as "study Area Number 1," The designation would allow theL County Board of Supervisors, after making appropriate. findings and "providing a simple majority vote, to revise the location of the 'Chico Area Greenline so at) to place the affected parcels within Study Area Number 1, in the urban portion of the Chino Area Greenline however, the special policies end procedures related to the Greenline, as described in the Butte County General plan, would apply to any amendments 3.15 related to this area. The Chico Area Greenline Policy is presented in Appendix the: Greenline are summarized as follows.dment and review of 13.5. The purposes of the policy and procedures for amen Purposes of Greenline Policy. The purposes of the Chico. Area Greenline are': a) To define the limits of future urban development which may occur on, agricultural lands in the Chico area of Butte County, b) To provide for the long term protection of agricultural.resources of the Chico area of Butte County. e) To mitigate the threat to agricultural resource -'s Dosed by urban encroachment into and conversion of agriculturial lands in the Chico area of Butte County. d) To reduce agricultural/urban conflicts in the, Chico area of Butte , County. e') To establish County cooperation with the City of Chico in land use planning of urban and agricultural lands located in the Chico area of Butte County. f) To identify urban development limits in or near agricultural lands within the county's 'Chico area Land Use Plan by use of a certain bold dashed boundary line, 1' g) To establish a certain and clear policy text for Butte County's Chico Area Land_ Use Element which will enhance and uphold the aforementioned .boundary line and poli-oy text. h) To establish certaini land_ i tions for the Chico area of y ..use h them orementioned boundary line and Butte Count in conformity with. the of policy text. e Butte Count' Procedures for Amendment of the Greenling Policy. Th y Board of Supervisors may amend the Chico Greenling 'Policy through a majority vote after adopting 11ritten findings of fact, supported by substantial evidence in the public record. shorting the following: (a) th"at t�be public benefits of converting the agricultural land to urban land substantially outweigh the public benefits of continued agricultural production; and (b) there are no other ,� ent� available and ro sed di�velo suitable for sheer urpoban or suburban lands. reasonable p Procedures Poor Bev states that f Review of the Greenling Policy: The Greenline ;Policy atidn of the Greenline shall 'be reviewed and evaluated every five years to insure that local laud use needs of the Chico area are 'being met. The first ,review of the 'policy is due in 1987: 9owever, the policy also states that an individual may petition MIid Board of Supervisors for a General Plan Amendment, including a 3:1.7 change in the location of the Gireenline, in accordance With the applicable laws and policies of Butte County and the; State of Caljfornia (see Appendix '13.5). HOUSING ELEMENT. The City of Chico and Butte County have adopted Housing Elements as part of their General Plans. The primary measure to implement the Hauling Element is the General Flan Land Use Map, which reserves lands for � residential uses. The City of Chico Housing Element defines the policies, programs, and recommendations related to the provision of housing in the city. The ,following text from the city°s Housing Element was adapted to summarize Chico bousing 9olicies. In planning for the provision of housing for all present and future Chico residentu the 'city's primary goal is to provide for :a variety of housing types in an atmosphere conducive to the well being of cite residents, and particularly to provide for.an adequate supply of housing ranging in, cost to meet the demands of students, low and moderate income persons, the special needs of the elderly and handicapped, and to ppovide as opportunity for first time home buyersi t rket The Housing Element recogni such as building coatstoorteS"gabehinterest arateintss ftheapreaervation of , agricultural .land, provision of sanitary sewers, storm drainage and streets, the provision of other'publi seritices such, as police and fire Protection* Pohool faeilitieo and parks, concern for design, preservation~: of neighborhoods and historical structure:►, as Well as concern for energy conservation within housing .units. The Housing Element states that "all of these factors must be considered in concert with one another, and no single item can be emphasized at the expense ofanother if Chico is to pursue a balanced and realistic approach to the provision of housing for current and future Chico residents (Citiy of Chico, 1985). The Butte County Housing Element also defines policies, programs, and recommendations related to the; provision of :housing;. The following policies apply to the project area. A governmental framework shall be estiablshed and maintained Which encourages and facilitates maximu.ra performance of the private homebuilding industry in aeeomm atin$ the housing .needs of the county -*s current,and projected populat Planning and zoning considerations affectin8 housing production shall be, 1 applied in A manner Which seeks to talanoe the need for 'protecting and enhancing the environment with the hOO 'for housing at affordable Prices. "i construction shall be encouraged in laaatioas with �- New housing ing facilities, reasonable proximity to centers of employment and shopp and which respect the eonser.tion of energy. The private homebuilding industry shall be enaourat,ed to give priority consideration to developing wthinekis� `ing urbanized areas or in locations adjacent, to � i such .areas ('Butte"County-* 1984) e3,1=g ' IMPACTS LandUses. The prop osed 'General Plan Amendment would not directly affect existing, develcp3dland uses; ,however, it would encourage private property owners to subdivide prime agricultural land for residential development. An 4 additional 270 new residential units could be allowed in the project area if project my the ro ect is approved (Tuttle 19a5). Without approval �f the project, o 20, additional resi.>ential units could be developed in the project area. The conversion of additional agricultural land to urban uses would increase the frequency an magnitude o` adverse land use compatibility impacts between the remaining agricultural land and residential uses within and around the. project site. The incremental and cumulative loss of agricultural land is a significant local, regional, state and national concern due to the importance of ,agriculture in the economy. Agricultural production levels can be reduced to the point where the economic feasibility of agricultural activities or support services such as processing,' packaging and transportation can be threatened. Once regional production reduces to certain threshold levelst support services may be relocated, service costs may increase, or sorvioes may be reduced. In the Chico area, t the reduction of parcel sizes and the encroachment of urban uses has had an incremental effect on reducing production levels. The proposed General Plan Amendment would also iucrementally affect production by encouraging reduced parcel sizes and by encouraging further applications for General Plan Amendments within the revised Greenline (see Section,4.2,' Expanded Project Area Alternative; Section 6, Growth Inducing Impacts; and a later discussion, in this section regarding the Chico Area Greenline). Planned. Land t;ses. The :proposed project Would revise the General Plan Land n the affected parcels. The designation of adjacent Use and Zpropertieahibg s8i andproperties almost surrounded by the affected parcels would not be. changed. The resulting land use pattern would not be logical or stable compared to a project involving all of the pexee19 in the project area or a project with better boundary delineation, such as roads or creaks (see Section 4, Expanded Project Area and Section 6) Growth Inducing Impacts). The new land use designation for the project area would be "Urban: agricultural Residential" with one 'acre minimule parcel sizes. The applicable zoning designation could be SR -1 (see Appendix 13.4). The secondary impacts associated with these revisions to planned land uses are the subject of thio report. 14Pgyn_nMaat Treads and Patterns. The proposed General Plan Amendment std 8w:50equent development of residential uses in the project area could result in the development of up to 270 ad�itional residential units and approximatoly 648 persons Cat 2.4 persons per dwelling uinit)., Development in this area would not be consistent with the city's intent to encourage development in other locations in the Chico Urban Area. The addition of 648 persons to the project area (Tratt".10 Zone 10) would exceed the. population projected in the Chico Urban Area Transportation Study by approximately 31 percent of the population projected for the year 2000 and would represent a 00 648 Vs, 106). number of people to be added in this zone to 106). Although the addition of the 648 personstosix fold increase in the i by the year 2d II the project vioinIity would not be oonsidered a significant adverse impact, the r expansion.of the housing market into prime agricultural land at the expanse of focusing development in other areas with existing sewer connections would be considered a significant, adverse planninginconsistency (see following discussion on the Chico Area Greenline)i, Chien Area Greenline: Approval of the proposed General Plan kmendment would Area. Greenline within Study Area Number 1. require relocation of the Chico r The change is shown in Figure 3.1-3• This relocation of the Chico Area Greenline must be supported by substantial evidence in the public record showing that the public benefits of converting the agricultural land to urban. land substantially outweigh the public benefits of continued agricultural production; and that there are no other urban or suburban lands reasonably available and suitable for the proposed development (see Impacts on Land uses). These findings are to be made by the County Board of Supervisors. The amendment of the Chico Area Greenline could be considered'gt;,ath inducing by directly fostering population growth and by removing the Greenline as a on 6, Growth Inducing Impacts). Review of the. Chico Area Greenline Poli'cyeisistill expected to occur in 1987.' constraint to growth Housing. The proposed General. Plan Amendment would increase the supply of available residential ?and in the Chico Urban Area. The future residential units would not be expected to serve students'or low to moderate income persons, but would :,;crease the supply of and competition among higher priced units. This impact would be beneficial. At this times the conversion of this property from agrioultural uses to residential uses may not be consistent with city or county housing Policies, which indicate the need to balance preservation -of agrioultural land and/or the environment with increasing the supply of housing. The previous discuasi'ona pertaining to IIrban Development Trends and Patterns and the Chico Area Greenline indicate that the lass of the subject agricultural laid is A significant impact and that the availability of housing in other areas of eastern and northern Chico may not justify the proposed General Plan Amendment at this time. ASURESMITIGATION The following significant adverse land use and planining easible. The No Project, Alternative impacts identified in this section would be unavoidable if the project were is approved: No mitigation measures are f disouased in section 4 of this report.' Unavoidable rffivaets 1. The proposed project would encourage the development of approximately ,2To new dwelling units in an area of prime agricultural land and would increase tfrequency act `3es. fre4uencand dmagnitude of adverse land use compatibility impacts withagricultural- 24 Cumulative financial loss scand employmentduetion, and related impacts to support instrie 3. Future development conditional nal toning and developmex� �peteriteria with the g may not be .consistent with: . for the Agr.euitural and Residential. Use Designation. (This is the 3:1'-10 subject of this Environmental Impaot, Report. .Measures to improve infrastructure, and services are proposed in other sections of this report to improve consistenOy With zoning and _development criteria.)' 4 Development in the project area would not be consistent with the city's locations in the -h and county's intent to encourage development in other Chico Urban Area (undermines efforts to redirect growth by not allowing the east side, of Chico to realize its development potential). The amendment of the Chico Area rewould 5 Th G�enline foster population growth and would remove a constraint .on growth in the project vicinity as a firm growth management tool. I' by .weakening the Greenline policy ,r I 1 <4n r r t4 Via. ♦=r Fir 5441 `s h„ ar+ ///,iii L`(.t• tr r � r�C 1�''r + iti;r r�C`✓-iC54 -t 'a. at til =t ` � ifiH wY• iiia! et oh S "'+..Y,!•%w' L t � t+? r., r .+ � rr' G:� ys� �_ y. 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Y+'f� � 1., L itY -F• ,E`� ^kw' <["S t i, '1 tl (t �J/,/ .,,�1 ���+C`.�� ,{''���� il� : �f'' i,�56 t i � ' ;.��.�,,����. rE � �thG •� !f0•i��5 ,`�,i= � 'fY�!'•I,O:''f+f Y' �"+ �. x:;j:..�f . tdr1; .�f3.i•,„F. c:+L?�i .P�3 S^1� '1� }':lFj /y t�;Y��i W y'• k�k�t y r e •r ;- NO •,,,,, f �� .�r, J p! +�'••r � tfdt'%' w �Y'rT � a��,a,�t})w�� •il'i l'� st afx4i! ( ,},'. +'p`�� '7 jt i � ir`�j`� ,�� S `^'- %f " k P. � i?aii �'!J••4rsi•'Lkk1v +� !� �'•':..t> ��:� �. - �' Y ': . {• �r�• (C• •�•1�t Ltd '7 Hri i': ri?]��� +. � � =•'rr, �1„ j „meq { �;�;� . ` � S, � iJFr'i'� ••i,frf� �s, "ter, f? �i,�i . ,. �?Vb40aS EXISTII�GGGp � I80. ARRA 0 � s UNDARIES OF R1;VISED ORMLINE �.a ALTERNATIVE AREA 11011IIiiRI GREENLINE WITH ALTERNATIVE AREA e . FIGURE 3 1-3 tOGC ,TION 01±' THE CHICO AREA GRHENL t E 'SCALE �et^Ch metP'!c9 k� i 2D0bk ,. ,2 TRAFFIC..,AND CIRCULATION EXISTING SETTING adway Syetem. The roadway system within the project area is presented in Figure 1.1-2. Roadways serving the project area include: Muir Avenue, Bell Road, Alamo Avenue, Guynn Avenue, Nord Avenue. The primary access roadways serving the project area are East Avenue, State Route 32 and The Esplanade. Muir Avenue, Bell Road; Alamo Avenue, Guynn Avenue and Nord Avenue are two lane local roadways. East Avenue is a two lane arterial south of the project site, but widens to four lanes just to the west of The Esplanade intersection. East Avenue is the primary east/west arterial in northern Chicoa State Route 32 is a two lane highway providing access to Hamilton City, Orland, Interstate 5, and southern .Chico (see Figures 1.1-1 and 1.1-2). State Route 32 is a four lane roadway southeast of First Street. The Esplanade or State Business Route 99 is a primary 'north/south arterial reading to State Route 99 which provides north/south access to Red Bluff, Redding (to the north) and to Sacramento and Southern California (to the south). The Esplanade also provides access to commercial areas, including downtown Chico. Most of the intersections in the project vicinity are the conventional, 90 degree angle type, but some of the intersections have an angle of incidence r which is significantly less than 90 degrees. These intersections and "the substandard construction of the associated roadways are typically able to accommodate fewer vehicles than conventional intersections and standard y :roadways. Project area roadways can also present ansafe maneuvering conditions. The following; unconventional intersections are located in the ,project area: Bell/Mule, Bell/Nord, Bell/Guynn, Bell/Alamoj Bell/Jones, Bell/Elkwood, Bell/Butterfly, Bell/Cussick, East/Kennedy, Kennedy/State Route 32, and Rodeo/Nord. The following roadways do not meet county roadway standardak,- Alamo, Guynn, Nord, Rodeo, Henshaw . and Muir Local..Traffic Conditions and Levels of Service. Table 3.2-1 provides a description of levels of service for intersections. Existing traffic volumes on roadways within the project vicinity produce acceptable levels of "service (relatively free flow)• However, levels of "service are being incrementally reduced by increasing traffic volumes at the following intersections: East/ State Route 32 East/The Esplanades East/State Route 99, East/Cohasset and The Esplanade/Cohasset (see Figure 1.1-2) Table 3:2-2 provides the existing P.M., i peakhour, levels of service at these intersections. At some locations, the, 'level of service is estimated based on observations rather than calculations. r Areawide Traffic Conditions. In 19821 the City of Chico prepared an areawide trAhbpoetation study. For purposes of documenting the traffic setting, the Chico Urban Area Transit Study (WS. )i prepared for the city by M and Associates,, is hereby incorporated by reference. The CATS has riot been ' adapted by the county: dings presented in 'CATS Some of the At, may not be current,,prudent, or accurate. This EIR recognizes and accounts for these inadequacies to the rartent feasible. The county will 'cooperate and encourages the city to refine the CATS: The objective of the Chico Urban Area Transportation Study was to predict future traffic levels in the Chico area and identify transpartat On improvements that Kill be ne cessary to accommodate this future travel demand. 3:2-1 a 1�c The CATS information is to be updated and revised based upon the most current I available and represents a basis from which cumulative traffic analyses can begin. FOP purposes of cumulative traffic impact analysis in the project area, the CATS, assumptions represent all reasonably foreseeable projects in the area of potentially environmental impact (Palmer, 1986). Table 3.273 presents existing and projected traffic volumes on major streets in the project area. Figure 3.2-1 shows the major improvements required by the year f 2000 according to the CATS. Figure 3.2-2 shows the major improvements required by buildout of the General Plan capacity according to the CATS. The primary improvements identified in the CATS for the project Theseeimprovements areal p are expected b the p- Y year. 2000... Widening of 'East Avenue to four lames between Stage Route 32 and The Esplanade. Widening of East Avenue to six lanes between T - � he Esplanade and State Route 99. (Butte County questions the feasibility of this improvement. The maximum feasible width of East Avenue in this location is expected to be five lanes. Widening would eliminate on street parking along East Avenue in this location.) t- intersection improvements at Lassen/The Esplanade, Lassen/State Route 99,, and The Esplanade/Cohasset. Tile additional primary improvements in the ;project area identified in the CATS for buildout of the General Plan capacity would be -. A new four lane connection between State Route 32 and State Route 99 via Lassen Avenue, including a new interchangb at State Route 99, - Anew two lane connection bel.:ween State Route 32 and State Route 99 via Eaton Road. The ;following text from CATS clarifies traffic conditions and planned improvements in the Northwest Chico Subarea. Generally, the Northwest Chico subarea involves the area north of lith Avenuo and west of Cohasset. "The major bottleneck in the`Northwest Subarea will be East Avenue, where traffic of up to 55,000 vehicles per day is forecast. East Avenue will have to carry 411 east -West traffic between the commercial areas oto Nord Avenue (Stato ,Ioute 32) and Cohasset Road. To avoid massive widening of East Avenue, Lassen Avenue should be extended west to Nord Avenue and be made a four lure arterial throughout. The existing sections of Lassen Avenue would bc. Widened from 40 to 48 feet except for under, the freeway; where the bride abutments are Only 52 feet apart,, Such a parallel road, Which would. also be linked to the Route 99 freeway, Would attract as mush as 80% Of the East Avenue traffic, Further relief could be .:provided by extending Eaton Road' west to Nord Avehue. This would divert about 5,000 external trips a day between Route 32 and northeast Chico as well as two to thrse thousand trips between Route 32 and the Route 99 freeway. Thus; With the Lassen and Eaton extensions, about 7,000 trips would be diverted to Eaton, and around 15000 trips would be diverted to Lassen, leaving only around27000 trips on East Avenue 3.2-4 TABLE 3.2-2`. EXISTING LEVELS OF SERVICE AT APPLICABLE INTERSECTIONS IN NORTH, CHICO DURING TETE P.M. PEAK HOUR 7 P.M. PEAR 'HOUR INTERSECTION LEVEL OF SERVICE (a) ■ -- East/SR 32 A (b_ ) East/Kennedy A (b) - SR '32/Kennedy A (b) East/The- Esplanade.. __ NA_ East/SR 99 A (.47) North Ramp South Ramp A (.57) East/Cohssset B (.62) The Esplanade/West Shasta A (b) The Esplanade/West Lassen A (b) The Esplanade/Henshaw B (b) The Esplanade/Cohasset C (.81) SR 99/Eaton D (b) NA Not Available (a) See Table 3.2-1 for descr_,stions>of levels of service for intersections. (b) This level of seevioe is assumed by the city based on observations - rather than turning movement volumes, because no recent counts have been performed (Derrick, 1985). Sources Derrick, 1986. r r r .32-6 TABLE 3.2-3• EXISTING AND PROJECTED TRAFFIC VOLUMES_.ON MAJOR STREETS IN THE iROJECT AREA i STREET SEGMENT LXISTING FUTURE (2000) DAILY VOLUME DAILY VOLUME r 1981 (a) 1986 (b) EAST AVENUE, SR 32 to Dixon/Cussick 8,800 9,716 15,500 Dj:xon/Cussick to The Esplanade 10,400 '11,257 26,700 The Esplanade to SR 99 14,800 16,340 ;,x9700 SR 99 to Cohasset 111300 12,476 181600 THE ESPLANADE' Eaton to Lassen 71400 8,170 1`8,500, Lassen to East 13,300 14,684 25,800 East to Cohasset 23,600 26,056 25,600 (c)' STATE ROUTE32 Porth of East NA NA 12,700 �r South of East 8,700 9,606 11,400 (a), SOuree: Butte County Circulation Elooant, 1584. (b) 1981 volumes increased by two peree:t per year for five years; Derrick, 1986. (c) Indicates underestimated;Puture volume or overestimated 1986 volumew rNA Not Available Source. Earth Metrics 1985,1 13L to County Circulation Element,, 1984; and Derrick, 1986, Pierce, 1986. rNest of The Esplanade). East of the The esplanade, the traffie on East I ill be further, reduced by theL proposed Laren Avetaue interchange Which will divert much local traffic. "Thus, traffic along East Avthue betweeh N PI andCohasset would probably range from 25,000 to 30,000 vehicles 1pde Kith traffic on Lassen xangiiig from 15,000 (at Nord) to 95,000 (west of the freeway) vehiel'es per day: Thus, East Avenge may still be able to ion as a four lane road, although It has been shown ndw as a 6 lane and ton =f siah Y Pigure lebeocAvenuehonlyswidened extens onnpro3eetsshould done First, and East to six l anes if congestion on Fast still occurs. r3.2-7 1 Other necessary improvements in the Northwest Subarea include widening Cohasset Road to four lanes between The Esplanade and Mangrove (adequate right of way exists along most its length), and making Eaton Road a four lane road between The Esplanade and Cohasset" (City of Chico, 1982)• ated by Another improvement Which is not in a oned, inCALTRANS "Routehe SConceptsR port"prelated the City of Chic is identified in a this improvement would involve to State Route 32• In the project vicinity, the Widening State Route 32 to three lanes, including a central two tray left turn lane, and the construction of bicycle lanes. Trans ortation Element of the Chico General Plan• The Transportation Element of the Chico General Plan is directed towards achieving a balanced transportation system, whicheednpatternssures nvenient of land useesand°r allmini.mizesChicdisruption residents, serves the propos P Of the environment. The discussions focus on: 1) the ixnPem�vateo and fpublic coordinated multi modal transport s; thhe°scenicienhancement of the motor vehicles, landscape;c3)lthe abatement of noise generated by transportation highway and 5) separation of modal systems. Noise uas not found systems; 4) safety; to be a significant. environmental issue for the proposed project, according to the Initial Study prepared by Butte 'Coutty (see Appendix 13.1)• The following ■ p summarize the Transportation Element. accommodate policies to Insure that the existing and proposed circulation areuin endedYtoesem. a with a the multi. modal traffic functions they .minimum adverse impact on the environment of the city. Coordinate all systems to maximize safety and efficiency and 'minimize conflict between modes ('see following discussion on the Chico Area Transporta tion Study, rTraffic Setting). Develop a public transit system responsive to'hhe needs of the greater - - Chico community. Actively promote the system as an alternative to automobiles. (The Chico Area Transit System is an existing aerviee)• Develop a system of bicycle facilities that provides, where possible, separate access to major destinations and assures the safety of all (see discussion on pedestripi and bicycle facilities) Protect and enhance the seeiric qualities of State Routes 32 and 99 and other major entry Kays to the city. A11 neK commercial development j L quately landscaped. Adjacent to State. Routes 32 avid 99 should be ads Circulation Element of the But a Coup Gene.A Pi The Circulation Element t tv �_ of the Butte County General Plan eras prepared iii, 198 • The ob"lat it is a guide And developing the future transportation and circulation system in to, managing _ e of the EXer�ent carries to,the year 2000; the county. The intended tbaefram with analysis, evaluation, and planninT eotlementcused nisoorganizeddinto three within five and ten year 'timeframes• Pblidy,is intended basic components. 'The first component, Part Oh- Basis for, transportation e basis for developingBA to Coun%y's tolic ah analytical and desc.riptiv Policies, +sets forth p y Transpot'tation Issues and an programs to the year 2000: The Ap Cation goals, objectives, policies, an _. a Appendices of the Circulation Element contain county�ride and urban area trap 3�2"8 w r ed to b the previous text, additional information.. and data supplemen�s referr Y. including the Element's environmental impact report. The Butte County Circulation. Element Diagram is presented in Figure 3.2-3• The primary improvement shown in Figure 3.2-3 that relates 'to the project area is the whichEaton Road extension would be constructed after the year 2000 to provide additional east/Ost capacity in North Chico. The following policies, programs ar:d requirements of the Butte County _ Circulation Element specifically relate to the project area and proposed General Plan Arendment p-oJect: 2.1.2 Butte County Will encourage and support sincere efforts by county rresidents to form assessment districts for road maintenance and road drainage., 2,2.4 The county will pursue the development of A comprehensive fiscal Impact model or program, including for traffic or road impacts, to - assist in the analysis of .cost and revenue .balances from proposed development projects. 2.P program: The county will study, develop and implement, as feasible, the following road related fiscal pro grams, over time; 1) Road assessment districts for maintenance of raw d'evelopment.' 2) Development fees for off site traffic impacts caused by new development. This program should first develop plans and schedules for speaifie developments that will contribute to the impact of circulation in surrounding locations. A long term goal of a countywide developer fee program for tr6ffCompimpacts sive' should be studied and implemented ata ater s',atez road development fee ;programs should be --jointly developed -- between thecountyand the cities of Butte County.c t 3) Drainage assessuent districts in 'problem areas. 4) Enforceable road development agreements. 4 -J,4 Right of wdy needed for new roads or expansion of existing roads shall be plannEd for. land uses that would preclude the timely develapment of such right of way shall be prohibited. 4A.6 usable road "easements of adequate width shall be located as to most beneficially serve the needs of all:parcels. 4.1.8 ?rivate subdivision roads will be built to pull, county standards and I' they will be privately maintained as such through their maintenance cycle. 4;1.10 New Jand'divisions should be held responsible for their fair share of the off site road3mprovo.taents needed to handle the traffic increases, that they cause`` 4..1.11 The county :should encourage the utilization of development agreements as one way of ensuring; that road development standards and plans are meta 14.1.1 The county will maintain the integrity of the Chico Area Greenline qadopted in 1982. Pedestrian and Bievcle Facilities. Pedestrian and bicycle activities generated from 'Within the project area are relatively low due to the low q density of development in the area. No sidewalks or formal bicycle lanes exist along roadways in the .area, rut.the low traffic volumes and low residential density make walking and bicycling relatively safe activities. Henshaw f Avenue, Lassen Avenue, and Cussick Avenue, south of Bell Road, are designated as long range Class III bikeways, Class III is bQuivalent to a bike route with no on street right Of Ways or improvements. qPublic._Transit. The Chico'Urban Area is served by the Chico Area Transit System. Regular scheduled bus service is provided near the project area by Route 1, which serves East Avenue and The Esplanade, east and south of the q project area. The route serves North Valley Plaza Mail, both Chico hospitals, and the Social Security office. The :capacity of this route is equaled during peak hour periods. No route changes are anticipated in the: near future. q Intensification of development along East Avenue and the increasing importance of East Avenue As a key arterial,, however, may result in a modification of Route 1 or the addition of anew route serving properties along East Avenue, between The Esplanade and State .Route 32• No schedule for this improvement has been adopted (Derrick, 1986). The closest bus stop to the perimeter of the project area is lciated at the intersection of :East Avenue with The Esplanade, approximately one mile east o the project area. Bus service Weekdays is provided between 6:30 A.M. and 7-030 P.M..- Saturday service is available between 8:30A.M. and 6:30 P.M. Most transfer points are located in the downtown area. Regional transit serviceis provided by Butte County Transit, which operates routes from the City of Chico to,Butte .College and the community centers of oroville and paradise. q Access routes to and throughout the pro,jeet area are Emergency A�cess� presented in Figure-3 2-1 No emev,�6ency vehicle access restrictions currently exist within or around the project area. i�owever, the unconventional intersections identified previously in this section present minor obstacles to large vehicles, such "as fire trucks; IMPACTS iia Genetion: The proposed General Plan Amendment would allots up to 270 new residential units to be approved in the project area. These residences would generate approximately 2;700 trip ends (inbound or outbound) per day,; based upon a trip g eneraton rate oftentrip ends per residence per day (Ina titute of Transportation Engineers, 1982): Peak hour trip generation from the 270 residential units kould be approximately 270 ,trip ends during each of ' the A.Ai. and RaAl. peak hour periods. The A.Ai. and P.'Mj peak hour period's "are one hour "periods with the highest traffic volumes betVdt A.Mi6:30 and 8:30 the and 4:00 and 6 t 00 P.A. q3.,2-11 1 _ esfr/rtit�.m l Widow rlP •1 -.•x•`1 ' •i y`, ' • - „ .fir .,•• � �+ It `r .a .4 .•Lr• •,. `♦, ,,, , •ti1, ♦ F� � uuitiul �Nr.♦♦M♦♦ - rLr'e'Lef.o■tt, i1 4 . ♦ � -� iYt • ♦ r ,�♦,♦{�� . ��ti� r -illy± .G i x� ♦� yfl�.�. y` f P 1° r'• 'M r* "r; ,.♦♦. 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" r ♦♦,, t .kT, ' (i t.r-' Vit,1.?r.�y` � jN .�. h♦ '�, z • ♦ . , 7, .! t irk �^ ",/ _ ♦ r`K•�'�y�',,*(.11,'{_tp�°'•i}'.,. .I'� ����(Yr3r`��"'+"..: 7 Wl. �y J;! rv�■` ;Y+ , _. kap*,,,F.- " - 4 :♦ ,.,+. • �'4`Nt ♦ . j ai a '4 � ,� ��,i/J� �Y ,! �� 11. - 1,4 ��yfp� _. ,`..p.� �Ah `r` f+��y �^ 7 '", ,.,-r �,,,�� a % - ,r. ' t 414 s , ` e^� `.fi e^� ✓h w va O ,f,. 1, y `�,.� .;� 4 r. �1r♦ ` '' irl:ii . ` �,,,��A �i vaZ �.I.. .„ �', �i t 4 a r ' �{ +lL�'�,.11 ] If �'`A ST D 10 it It Ile ` CLASS I (OATH) (LANE?, ' ils.k � ,.� riLAS5 �I d -. ?i i ti,; {..e. • r f / • 7 '''lIILLL tt CLASS lit (ROUTEI `*^ • '� ♦' + �'. YatlYlt/NtY�t s r1� S'it'gY�lt�1j X. ~' i`r"° `0, Z '',1 ➢� ,r, 4 1 a a� .L -1•{�y � ♦ SCAy1+1 �My 4� ;rd a 7 LE: earth ICUR 3. Z��+ BiIC WXy8 P7,' OF TEEE 'G�tICO GENERAL PLAN W rniotrli36 Trip Distribution. The total number of trips generated by the proposed project (2,700 trips) were distributed within the existing roadway system by making general assumptions about where new vehicle trips would be destined. The 'primary assumptions were as follows; rFive percent of all trips would use State Route 32 north of Muir Avenue. - 20 percent of all trips would uae State Route 32 south of East Avenue. 70 percent of all trips would use West Shasta (104), West Lassen (104) r ! Henshaw (154) and East Avenue (354) Five percent of all trips would use Guynn-Avenue (2.5%) and Cussick Avenue (2.54) south of East Avenue,: Table 3.2-4 presents the expected incremental increase i,n vehicle volumes projected to occur from 270 additional residential units inthe project area. Table 3.2-5 presents the relative impact expected with and without the ;proposed projecton the circulation system.: Traffic Conditions. The addition of up to 270 residential units to the project y a would incrementally increase the traffic volumes on area roadways. ''this additional traffic would add to projected volumes in the project vicinity abd Would decrease levels of service at affected` intersections. The following discussions clarify where impacts could occuras -a result of the additional 'trips generated by the project 'in one future year (2000)• proposed General Plan Amendment the number of left under STATE ROUTE 32. The additional'.trips by development allowable the turns from East Avenue to State Route 32, would increase traffic on the east/west portion of Kennedy Avenue, and Would increase traffic at the State Route 32/ Muir Avenue intersection. Although these impacts would reduce travel capacity somewhat along State Route 32, they would not .be considered significant and would not require mitigation, such as signals or turn 'lanes, due to the relatively low traffic volumes involved and the remaining capacity of these intersections. Planned, long term traffic improvements, such as the construction of a third lane (two way. eft turn lane) along State Route 32 and othereast side connectors, are expected to maintain acceptable p levels of service in 'the future. Other measures to reduce conflicting traffic . tq,taielintersections of keennedyAvenuearerecommendedlaterin thissection toimprovelevels of service along State Route 32. EAST AVENUE. East Avenue Fiould carry a large portion of the trips generated by the urban growth anticipated by the year 2000 and the residential growth' allowable tinder the proposed project: The additional traffic At the west end of East Avenue generated by the proposed project would not be significant. (See the previous discussion pertaining to State Route 32:) However, the additional traffie"ereated At the intersections of East Avenue with Mord, `' Guyon and The Esplanade and State Route 99 Would reduce leV616 Ofservice at these locations. Previously planned and recommended roadway improvements and related measures 'identified at the end or this section should be ,implemented to mAintain acceptable levels of service in these locations. 3 :2:.13'. ESTIMATED FUTURE DAILY TRAFFIC INCREASES ASSOCIATED WITH THE ' TABLE 3.2-4.. PROPOSED PROJECT PROJECT GENERATED VEHICLE TRIPS (a) - ROADWAY SEGMENT EAST AVENUE SR 32 to Cussick 500 Max 500 950 Cusick to The Espl anade 500 The Esplanade:'to SR 99 450 1 SR 99 to Cohas set THE ESPLANADE 100 Eaton to Lassen 500 Lassen to East 1040 East to Cohasset STATE ROUTE 32 135' North of Muir 100 Muir to East 540 South of East 270 WEST SHASTA 270: WEST LASSEN 400 HENSHAW 70 GUYNN (South of East) CUSSICt' Wdst Shastato 270 150 HenshaWtoaEastHenshaw 70 South of East - (a) Represents increasen by }both directions on traffic ithe .proposed project. ythese ahincremental ei roadw ys duedevelopmn allowed source: Earth Metres xnootpbrated 198b. 32-1 THE ESPLANADE. ,The additional traffic generated on West Lassen, West Shasta, Henshaw, and East Avenue would affect travel capacity along The Esplanade by increasing left turn conflicts at main intersections. The impacts of this andtraffic at The Henshaw wouldnotpbenintersections consideredsignificant andtShasta, wouldnot,requiregmitigation due to the relatively ;lo1a traffic volumes involved and the remaining capacity of these signalized intersections. However, the loss of travel capacity at the intersections of The Esplanade/East and The Esplanade/Cohasset would require mitigation as ;defined in the EATS. Consistency with Local Transportation Planning. The proposed project does not present any significant impacts which would substantially alter the data bases utilized for transportation planning in the Chico area. However, the existing data bases did not anticipate the proposed development density in the project area. The construction of the Eaton Road extension would not be affected by traffic in the project 'area in the ere.e velopme-Ot but would the proposed General Plan Amendmentfuture. or related e urban density and. would increase The impacts of the extension would be examined and mitif;ated prior to approval of such a project.. The propound General Element whichears to be indicates thatnthetent with county will the policy in the County Cireulati n maintain the integrity of the Chico Area Greenline (see Section 3.1, "Wand Use, * Chico Area Greenline). The Circulation Element s intent in maintaliningttheChico Area Planning, Applicable Plans and Policies for a discussi Greenline is probably to reduce trip generation in areais of low urban density where roads would require substantial improvements to meet county standards. The remaining policies and requirements presented in the Existing Setting of this report address financing of roadway improvements. Many of these measures apply directly to roadway improvements recommended as mitigation measures in this report: Pedestrian and Bicycle Facilities. The proposed project would increase pedestrian and bicycle activities by allowing increased urban density in the project area.. The projected increases would not be expected to create significant safety impacts or vehicle conflicts on local roadways, such as Henshaw Avenue. Safety, impacts along major arterials would not be significant, however, the project related bicycle activity and motor vehicle trips would increase the need for appropriate bikeways and pedestrian street crossings along major arterialsy such as East Avenue* especially near schools such as J Partridge Elementary., The Chico bike route along Henshaw Avenue would not be significantly affected due to the small increase in *toffis projected for this street: Public Transit. The proposed project would allow development which could j increase patronage of Route 1'6t the Chico Area Transit System. However, because the distance between most of the project area and the closest bus stop is more than one milej May .. bury service. Impacts from the future development ddevelopmentany of the rarenot� utilize tobersignificant but would incrementally increase transit demand along the East Avenue corridor, If cluster development is proposed* measures to encourage transit patronage should berequiredduring, site plan review.; EmerohdyAccess. The additional dwellibg'units 'allowed by the peopo3ed General Plan Amendment would increase the need for emergency service ,access to 3.2�1b r the project area. Unconventional intersections project area should evaluated and modified, as necessary, When specific subdivisions are reviewed by ed in the by the county, vie MITIGATION MEASURES. The following measures are recommended by the staff of 4 Butte County and the City of Chico to mitigate the traffic impacts identified } in thus section. Measures identified in the Butte County Circulation Element should be implemented, as necessary, to acquire appropriate funding from developers, the I Federal Highway Administration (such as aid from gas tax revenue and funding), and from CALTRANS'for appropriate traffic mitigation measures identified in the CATS and in this report The safety, and capacity of the unconventional intersections in the project area to convey vehicle traffic and emergency vehicles should be evaluated and modified, as necessary, when specific subdivisions or developments are reviewed by the county. Rights of way foe each of these intersections should be reserved, as necessary, as a part of adjacent subdivisions or developments. Realignments should be req►.tired on a case by case basis with the objective that all realignments be completed with buildout of the area. The standards defined in the Butte County Circulation Element (page 35) and in the 1�utte County document entitled: "Improvement standards for Subdivisions, Parcel daps and Site Improvements Pursuant to'Cnapter 20` of the etBarea.CoUntY applicable standards be required for the roads in the The le standards involve road types R3 -3A and SRS -1, depending on specific development proposals. These improvements would not be required for the proposed General Plan Amendments, but r would be required when subdivisions or _development is proposed. The City of Chico would request that these roadways meet ,the standards of the city or county,, whichever are more stringent. Left turn pockets should be constructed and on street parking should be eliminated on East Avenue, between Connors Avent!. and The Esplanade, and on The'Esplarade, between Lassen Avenue and Rio Lindo Avenue. These a projects should be implemented as development occurs in the projedt area and vicinity with the objective that the projects be completed with buildout of the project area. S East k�enue should be widened to its ultimate width� including _ n8 installation of curbs', gutters and sidewalks by developers With frontage ' along East Avenue. (This requirement is not the responsibility of the applicants, but 'should be implemented as development occurs in the project Area and`vioinityi) - Butte Count should require the prooject applicants and future developers Y q in the project area and vicinity t stall traffic signals at the p y intersections of East Avenue With Gu nn and Nord: Installation of the signals should be completed with 'buildout of the project area. - Site design criteria which increases opportunities for transit patronage , should be encouraged ffspecifio de'velopmeht proposals involve clusters of development. 3' 3 GEOLOGY/HYDROLOGY EXISTING .�?T_TIiiG Geoloyy. The project area is located on a broad alluvial plain known as the Chico 'Fan, which is lc,,ated in the northern Sacramento valley between the Sar,ramento River to thj west and the Sierra Nevada foothills to, the east. The *- project area is underlainby Recent Age coarse grained alluvium consisting of unconsolidated silt, sand, gravel and cobbles. The coarse grained alluvium is overlain by a loamy surface soil !aye. and is underlain by Sierra Nevada foothill metamorphic and volcanic rocks. S. project area are composed primarily SOILS. S`urficaal soils occurring. in the roation (USDA, 1976): Tb-,- Fina . f loams belonging to the 'Viva Farwell assoc Farwell association is characterized by good natural drainage, moderately slow to moderate subsoil permeability, slow to medium runoff and no erosion hazard. The Vina. Farwell association also possesses a moderate shrink/swell (expansion) .potential,,, a measture of the volume change of a soil with a chaLge in moisture content, and a moderate allowable soil pressure rating, a measure of suitability of a soil for foundation pressure. The Soil Conservation Service identifies and rates the agricultural potential and limitations of soils into eight land capability classifications. Soils in Glasses I to IV are considered agricultural, and soils ,in Classes V to VIII possess characteristics which limit agricultural uses and are better suited foe forestry, range, wildlife or recreation. The Vina `Farwell soils have been identified as Class I and II prime agricultural soils;: Portions of the project area also contain surficial soils composed of clay loams belonging to the Conejo Berrendos association. The Conejo Berrendos association soils are-characterized by good---natural drainage;, moderately slow to slow subsoil permeability, slow runoff tuad no erosion hazard: However; when these soils are compacted, they can become highly impermeable (Edell, 1986). rhe Conejo Berrendos soils also possess moderate to high shrink/sUell potential and moderate allowable soil presstb�e. T'ae Conejo Berrenc!aa soils are Class III, prime agricultural soils. SEISHICITY. The Chico erea does not have a histoty of severe seismic activity, (City of Chicor 1976) • There are'no active ars potentially active f"Its or area whii;h includes t ;There is no record of surface rupture ciao" g �' A)gUist Priolo Special Studies Zones located in the Chico ar su' the project area.. In addition, there is no documtented history of ground failw e,ring n Chico.; liquofaetian, lateral spreading, lurching and differential settlement in Chico. The Cleveland Hill eatilt, the oily known active fault in Butte Pb�zty is located approxiwatelj 50 miles 1�o!itheast of the project area: Movement along ttihe Cleve�tand Hill F,sult was r0ponsiblo, for the 54 magnitudes (Richter Scale) Oroville earthquake in Lugustt 1975. In6.Oroville earthquake waa'felt in Chico, but no damage vas recordsd. A series of shorn, nortt/:iorthwesti trending inactive ;faults are located approximately ten miles northwest of, the' project area. 3.3-1 In addition to the X975 Oroville earthquake, ground shaking from the Chico immediate arca has been felt previously in the Chico picenters outside the mme ; area. However, the greatest intensity of ground sb.aking recordedin Chico was r Scale and there is no historical evidence of any 5.0 on the Richte,take significant damage having occurred. A statistical estimation of earth4° 'r Richter Seale magnitude, Es a function of estimated return period for California, indicates,'Chico could experience an earthquake df Magnitusu suggested ed the Richter Scale once every 40 yQars. Other studies have, however, suggested . smaller maximum intensities (City of Chico, 1976), flvdrolot. DRATIIAGE. The overall topography in the project area slopes gently to the northwest t�jward Mud Creek, which is located approximately pproxim tel lode mile75 Eorthwest south of the project area. Lando Channel here located existing of the project area. At resent, there are: no existing storm drainage nd. facilities within t'ae' ersoilct area t There are to well defined surfacen6ffin the edrainage� and percolates into th s, existing. i. d p r courses in the project steer .. a Section 3•a� Public Services and Utilities, ® nage facilities in the ■ for a discussion ox -' planned storm drat 1 project area._ di A storm drainage study completed ion ofhcollecterander to. area, stormedraingli as nes dust project area, hrecommended installat south of the Southern Pacific Railroad end `along Bell Road in ent of the storm drainage study area (see accommodate potential urban development gravity to Shasta Union, 1 Figure 3.4_1). 'These collector lines would flow by Drainage Assessment District (SODAD) channels which would ultimately discharge into Mud Creek (Rolls, ALnderson and Rolls, 19g5)� in accordance with The Proposed collector, lines have been designed to carry 100 ye$p'r storm flo�ls, ', Butte County Public Works Department ;and Butte -OUnty Improvm-r- cilsta-It rds. or Annexation LO SUDAD would be requiredprior to the ping a storm areaThe county and city are currently jointly, plan for the north Chico d ea Ubic)iincludes the sul�jeot parcels (ser; Section an 3.4, Public Se subject parcels are not located in the 100 year floodplain pLOODI:NG. Th (U:S,: Department of Housing and Urban DE:velopment, 19714) • tfild Creek and Lando Channel are modified ephemeral ehannels designed to provide flood control for Big Channel a e Mod The project area may, h&ever' be subject to minor, k of drainage uctur a and localized Li.ormwater ponding due to the len infrastr soil dbtpaction`. GROUNDWATER. T'ne project area and Chico vicinity is wderlai.n by extensive ` g�otndtaatei` supplies of the Sacramento Valley groundwater basin (Californi:a 1980 ).• Section 1449 Public services Department ois Water Resoureesron of water supply and distributionthe s IItilities e�:ntainsea discussion water bearing zones beneath Chico: These zone project eree« Ther. uifers. Groundwater generally moves ' are the shall otic intermediate, `and deep aq westerly and downward from the shallop to intermediate aquifer and from the intermediate to deep aquifer, The shallow zone contains unconfined groundwater at depths less than 20 feet below ground surface in thick alluvial material. The shallow zone receives recharge directly for infiltration of precipitation,. streami'1', domestic' wastewater from leachfields, and urban runoff frau drainage wells. Groundwater in the intermediate aquifer occurs at depths 20 to 50 feet below the ground surface in older alluvium. The intermediate aquifer receives I recharge from streams incised in older alluvium, through vortical leakage from V overlying saturated alluvium ;andpossible subsurface inflow from the Tuscan Formation. The deep aquifer is located in, the sand and gravel ot the Tuscan Formation, which is confined by less permeable clay, tuff and mudflow layers. The deep aquifer, which yields large amounts of groundwater to deep irrigation and municipal wells, receives, recharge mainly from etreams that drain the foothill. area east of Chico (CDWR, 1984). Since 1961, recharge of the local groundwater basin generally has exceeded local discharges in the Chico region,in contrast to other localities in the Sacramento Valley groundwater basin which have experienced an overdraft. Groundwater tables in the Chico area were 'lowered by'an estimated 1Q feet between 1912.and 1961 as a result of intensified agricultural irrigation, but have since stabilized, or have risen between two and ,sin feet (Butte County, 1982). WATER QUALITY. Specific water quality data are not available for project area surface water or groundwater. Runoff from the subject parcels would be expected to contain minor amounts of sediment and contaminants characteristic of agricultural and urban development in the area. Groundwater in the deep aquifer is generally of good mineral quality, reflect!! ng the excelldnt -mineral quality of surface graters in creeks which e provide Voundvatet recharge. Poorer quality grolmdwater is found in parts of shallower aquifers with nitrate concentrations eseeeding drinking water standards of 45 milligrams per liter (mg/1) (awk 1984). Idi.trates are toxic p Y nths old. to htmmans artieu.larl children leafs, than three to six mo Each area of high nitrate coneentrations, two of which are located 0:75 miles ' northeast and south of the peojoet area, underlies unsevered residential areas and g of groundwater flow from urban development drainage wells] in obelow) The ,numerous individual disposal s ' systems which :return domestic Wastewater containing nitrogen; phosphorus and chlorides to the shallow oundwater zone are a major source of the elevated nitrate. Concentrations. There are also more than 40 known drainage Wells at Off site locations that return to the 'shadow groundwater zone surface water runoff from areas of inadequate surface 'rater drainage g systems (CDWR 1984) To resolve the existing nitrate problem in the Chico 'area and prevent additional tater quality impairment or valuable groundVater resources in the area, the;CDWP recommended that (1) un6ewered residential areas in the Cbico Area connect to the existing sewerage syAtem as soou as feasibl3; and (2) construction of additional & inage wells should ba prohibited and all existing dray°,nage dells should to rblimihatbd as mon 'as feasible. Other+ study Pecommendationa pertain to appropriate well construction and monitoring of shallow aquifer groundwater quality (GDO, 1984). The City of Chico and Butte County have adopted a Nitrate Action Plan for the Greater Chico Urban Area (Butte County and City of Chico, 1985) • The goal of the Nitrate Action Plan is to prevent further degradation and to minimize the existing nitrate problem in the groundwater. The primary objectives of the Nitrate Action Plan are to jointly develop a, Sanitary Sewerage Plan and a Storm Drainage Plan for the Chico area. The sewerage plan would include standards and requirements for sanitary sewerage facilities, land use designations and densities maximums for nomsewered areas, and a time schedule for requiring the elimination of septic tanks and connection to the sanitary sewerage system. 'The drainage plan would include standards for the elimination of all existing drainage wells and standards. .for. the installation of temporary drainage facilities, such as leachfields. At both sewers andstormdrains (seenSectioi. 3.4,oPublicServiccesmand U plans s) present, Y Y j Ystudyingfor d Utilities) . A feasibility study of providingsanitary sewer service' to the north Chico area, including the project ;area, recommended innt4llation of a trunk sewer Which would accommodate: potential: urban development of the area. The trunk sewer, which would pass approicimately 750 f66t northwest of the project area, ,ould connect the project area to the ,sewage treatment plant in Chico. eIMPACTS olo . Residential development allowed ss a result of the General Plan Amendment and amendment of the Chico Ivrea Green Line would have no significant impacts on the geologic setting of the project area. Sons. surficial soils located to the project area would not present significant development rsonstraints to potential residentialL development resulting from the General Plan Amendment. Potentia] impacts due=-to the -_ moderate s4hrink/swell potential and moderate allowable soil pressure of the project area soils (the Vina Farnell and Conejo Bdrrendos associations) could be reduced to insignificant J#vela with implementation of standard engineering design and construction methods. The loss of prime agriculture soils is discussed in Section 3.1, Land Use, Planning, and Applicable Plans and Policies. The due to�healevel nature nofotherproject�area;al construction donot Potentian erosion hazard related gn uld be reduced to insignificantlevelswithstandarderosion control prkdtidG64 Potential urban t develo*cnt on minimura one acre parcels would act involve unusual or extensive, grading or soil redistribution, further minimizing potPatial,erosional atribution Oculd simply involve impacts. The expe'eted grading and soilreds . cats for foundations and minor fill for landacape purposes, (See 'Section 3.1, Land Une, Planning, ,Applicable Plans and Policiesy, for 'a discussion of Potential ag'ricult'ural impacts as a result of the.proposad project.) S91SWCityi The primary, potential seismic hazard to the project area is ground' Shaking. As discussed in the Existing Setting, there is a high Probability that cthe aria would continue to experienoe: ground shaking in the future. Various intensities of ground shaking have been predicted for the Chico areas The inten6lIty of ground snaking would depend on a oombinat4on of M-4 . Ir nitude Of the type' Of fault, the distance to the earthquake epicenter, the mag and the: r the earthquake, the types of materials botween the fault and the area, propertied end thic:mess ofthe atioil develapmentandastarm ;train Or sewet the site- r Gr cog impacts to residential standard engineering design and construction, ound ahakt reduced by uld be red Building Code and the Recommended Lateral- Force in accordance with ti -,e Uniform nears Association of California. Requirements prepared by the Structural Engineers The potential for liquefaction, a ;process by 'Which water saturated, , cohesiaaless (clay free) soils lose strength and become liquid during earthquake induced ground shaking, in moderate in the site area (Butte County, 4 Se ting, the Chico 'area has no documented 1977). As discussed in the Existing lateral history' of ground or ground failure, including liquefaction, ten and. spreading, urehing and differential engineering With �andaconstruction a ropriate en8ineering design future methods whichftakeninto�ace unt all known seismic information, consistent with the Butte residential development in the project area would be no significant seismic County Seismic Safety Element (Butte County, 1977), andhazards would be expected. gvdr lam and proposed DRAINAGE. Due t minimum o the level nature of '.the pro jest areaand c� tharea xould net construction, developm one acre parcel sizes limiting patterns. The potential development of the alter the orverall natural drainagepa driveways, roadways') which 1 pe s (buildings, rvious surtaceIIe in the volume of runoff generated laouldresultninesscorresponding increase, a stow drainage study Within the area. As discussed in the Existing Setting, 'of collector storm drain, lines to accommodate has re"mmended the installationSee Section 3•49 public Services and future development in the area. a improv_Aents required for the Utilities, for a discussion, of iatorm drainag ' project area. FLOODING. The project area is not i tsurfacesnwouldlcreate a miinorlincrease Development of the area with imparvi0AT( I� storm drains are in the amount of runoff generated frOW the area. constructed to collect surface runoff, the minor additional runoff would not ected to cause downstream fl If storm drains a ncontiUtto�oceur be exp minor locAlized stormwater ponding Y with development, _ = dw si otn*ater Development of the area would ba ble to direct any localized st ponding away from residences and roA aY the 'year 2000, groundwater extraction in the Chico area is GROUNDWATER, BY although reduced irrigated not -expected to exceed the rate of recharge, 1 82 • Future scree a Will reduce the quantity Of recharge (Butte County, 9 ) g development in the projeat area aould'e ewo would. represent sting va an�crtmentalant eel's With impervious surfaces, whi acted to result 3n face reduction in gr info stxcau]tdo otz7b hype) due to increased n verse pat' 1 runoff. The reduced recharge ;impact to groundwater levels due to the limite1constructionuturedevilopmentt are dtbnacre parcela•SeCtiont3:11 Public Set�v'ices anof water dpUilites. addressed 3, WATER QUALITY. Developmentng resulting from the proposed General Plan Amendment.. Mould result in minor, increases in urban pollutant quantities in runoff generated by increased vehicular traffic (hydrocarbons, rubber, iron), and from application of pesticides and fertilizers. Development would not Introduce any new pollutants to area surface craters that are not already present. Overall surface water quality Impacts, therefore, are not expected Y to be significant. As addressed previously in the soils ,disettasion, adverse " erosion impacts and associated Water quality imparts from sedimentation are not expected to be significant, mg/1 have ed in the.ExistingSetting, ng areas of ;nitrate concentrations above 45 As discussed i detected in the shallow aquifer in the project area; This degradation has been due ;primarily, to, individualized septic tanks and approximately 40 surface water runoff drainage wells. The city and county are Jointly preparing sewer and drainage master plans. At the present, it appears that unless the project area is annexed into the sanitary sewer system service area, future development on the subject parcels, at least temporarily, would. be required to use septic tanks and leachfields for wastewater disposal (Nunez, 1986).Consequently, potentially adverse groundwater ualit impacts could occur in the site area: quality pacts Septic tic systems in recharge areas could result in potentia]public health impacts. Specific increases of nitrate concentrations in .groundwater cannot be projected at this time. The feasibility and effectiveness of septic tank and leachfield systems are, dependent upon several constraints, such as soil Percolation rate, soil depth, slope, the level of seasonally high groundwater, and development density. The septic system should be located in soils with adequate percolation rates for the design hydraulic loading of the system. The soil should be of sufficient depth (seven or more Peet) to remove organic material and microorganisms in the wastewater. The slope should be adequate to minimize oversaturation. If the groundwater rises to the leywer surface of 1 the l.eachf;field, the soil would become saturated, the effluent would contaminate the groundwater and; effluent may acoumulate on the ground surface. The maximum number of soil absorption stems which maty operate suoeesafully in a given area is dependent upon the ability of the Wil to absorb septic, tank effluent. To ensure adequate Wastewater treatmento minimum sizes of ' developed areas must be established to control the density of on .site di,aposaI systems. 3:n geheral, a standard, minimum developed area size of one acre is recommended to prevent hydraulic Oterloading of the soil: Other information contained in a Journal of Environmental ilealth suggests that 0.5 to one acre of land for leachfield disposal bias been determined to be reasonable for sPlan' d' 1:9861: These genera]. guidelines. satisfied the titrate Action . se tie tanks in nitrate areas (E' which sets a hiailing unit density not to exceed three dwelling units per ,acre ('Butte County a:iii City of Chico, 19806 As stated previously, specific project related increases in nitrate .concentrations cannot be projeoted at this time. Metticr, are available to estimate the potential degree of increase (Reid, 1986), Studies to calculate the potential increases in nitrate concentrations should be bompieted once more :information, about potential development as well As baseline groundwater ' conditions is itvailable. The results oould 'then be usedto Identify gApropriate mitigation, if necest4iry. dro'undVater quality monitoring as outli"tied in the titrate Action Plan should also be continued to detect' 3.3-�: potential groundwater quality pacts and to identify andim Plenient roprate mitigation. In addition• in ` order to protect groundwater quality a PP Potent and, impacts, the county and city shovd oontinue joint and minimize ry sewer system, and elimination of development and connection to a sanita eliminate, ent of sewer and drainage gaster plans to include to slim septic tonics } drsinage wells. MITIGATION t+EASS URHM lly Residential development of the project area is geoteo reduce Gear - me to insignificant levels.,e feasible. The fallocring mitigation measures are recommended to reduc potential geologic; and seismic imps construction techniques recommended by specific engineering design and constru _ the soils engineer should be incorporated, as needed, into the project design. h seismic r equirements of the current Building design should comply wit Uniform Building Code and the Recommended Lateral Force Requirements prepared by the Structural Engineers Association of California. Foundation supports and utilities should be designed to resist and Withstand earthquake induced grc"und shaking. Standard construction methods and rerosian °Oolbe erosion conmeasures t ol implemented (including dry weather season grading, plans, revegetation, and devices to retain sediment within the minimize po tential erosion impacts. construction area) to minim �_ fir. �hd follat3ng mitigation measures and recommended to reduce Avdrol_o impacts to "nsigafioant levels. potential hydrologicPa Chic should continue to jointly develop Butte County and the City of Ch sewers As and implement tester plans for storm drainage and sanitary mandated in. the;,Nitratd Action Plan. Ii the use of individual sEptio tank and lea chfield 'systems is the systems should be, designed to satisfy county health necessary, standards and the requirements of the Action Plan... Groundwater quality monitoring, as outlined in the Nitrate Action Plan, should `be continued to detect potential groundwater quality, impacf,s and t6 identify and implement approif necessary priate mitigation, � ' and baseline grouudw;Ater, As mote iaformatian about future development quality conditions in the pinjn�itrate c�noeatrati.onsgshould be�completed r area- becA of the potential increase trate mimitigationshould be identified: and imPlenente , if and appro P neCesa&rY •. should be oonaidered to reduce surface water runoff and increase on following of strrmwater. Individual review of subdivisions and site plans should focus on measures to reduce Aisite runoff. Measures such As semipervious walkways and parking lots should be 'considered. .0 PUBLIC SERVICES AND UTILITIES EXISTING SETTING: Public services provided in the project area include fire protection, education services such as water supply, sheriff protection, Most public services available to residents of and road maintenance. incorporated of the City Of Chico, such as street sweeping and regular as the project police patrols, are not provided to unincorporated areas, such the primary services available in area. The following discussions ,describe the North Chico Urban Area. Water Sunalv.. Water is supplied to theprojectarea primarily, through private (CWSC), a private Water utility, Wells California dater Services Company the project area with eight inch water mains at serves the southeast side of All Chico and its unincorporated areas receive eater from: Custidk Avenue.. of wells. Some new development in the project are& will involve additional lines. CWSr currently private wells rather than connections to CWSC water n well site near Guynn Avenue;rant, 1985)• m. looking at the purchase of anew The on Seger Service. The project area is curently are.�served by septic tan Pollution the nearest sewer main connedtint, project main of BastAvenue Control Plant is located on Jhe northnedge located of East Avenue.anItti.stuncerta n' be only serve the area limit whether the portion of the project area north of t;heurGrentlytis being study served by gravity flaw. A ;.fewer Master Plan City of Chico as required by the city and conducted py Butte County and the Plan (see Section 3.3, Geology/Hydrology). county Nitrate Action The Chico Water Pollution Control.Plant is currently operating below capacity. been allocated for other areas of However, thr unused capacity already has expected growth. Payment of three fees ;Would be required to obtain a connection to the city (1) a water pollution control. plant sewage collection and treatment sys tem; capacity fee, and (3)"a main lane extension fee. The fee, (2) a trunk line des may and nonresidential areas and (order rates may ear}; between residential to + -at area must be change accard,ing toimplementation of the Sewer Maser Plan. In - "control plant, the proje connect to the city+s water pollution property owners would be required to annexed to the City of Chico, oe affected to The aexation agreement xaivea the riga nn -sign an annexation agreement. ._ future annekation actions (Reid) 19860 Nunez, 1985). oppose Imple�pentat'ion of the city and county Nitrate Action Plan requires Butte ich will r County and the City of Chico to develop standardsyandwrequirementshfor an . served include. the area to be facilities; the area to be served by septic tanks, with time sanitary sewerage designation of land use and maximum denssitisfortnankseandQconnectionato sabedule for requiring the ;eliminationseptic Nitrate Aati on Plan indicatesthat the city and .sanitary aexerage system: .The d determine the develop a fnancii�g plan by January 1, 1985 and sewer, count will of y availabil.ty.of.'g"rants or low interest loans for the exte unserved areas to minimize and avoid drainage andlor grater facilities tb and The Sewerage Has "citrate contanination be the groundwater, been completed ora ,proved at; this time. Finan ding Plan have not __ Storm Drainage. There are no storm drains in the project area. Butte. County requires storm drains on lots with a gross area of one acre or less. Mater easily percolates into the sandy loam soil ,in the project area and runoff has not caused ;significant flooding. The project area isnot within a 100 year floodplain, according to the National 'Flood Inourance Program (FEMA, 1977)- The cost of storm drain infrastructure generally is paid by either the property owner or the developer (Edell; 1986). Since storm water runoff has been listed along with septic tanks as being the most contributory and the most controllable sources of nitrates, the Nitrate Action Plan has required a sewerage plan and a storm drainage plan for'the greater Chico Urban Area. The drainage plan will include: the standards for the elimination of all of the existing off site drainage wells; the standards for the installation of temporary drainage facilities aiad leachfields and a financing plan for construction of net drainage facilities. In 1985, a Storm Drainage Study was prepared for the North Chico Area by Rolls, Anderson and Rolls: This study included 1 1,338 acres of land in the northwestern portion .of the Chico Urban Area: The study area included the project area and provided a description of specific projectsand related costs. The storm drainage improvements proposed 11ithlin the project vicinity are shown in Figure 3.4-1. The costs for these improvements and others identified in the study exceed $9,000,000. The Drainage MasterPlan required as a part of the Nitrate Action Plan will supersede the 1085 study. The Storm D*ainage Master Plan study is currently in progress. Police Services: The 'Butte County Sheriff's Departmeni". provides police service for unincorporated areas of Butte County. Ten deputy sheriffs serve the northern half of Butte County (approximately 800 square `mile. using a beat patrol system, The nearest station is four to five miles from the project area at 475 E: Park Avenue and Highway 99• The average response time to the pro:jeet area depends upon the priority of the servicecall. If called for a life and death emergency, response time cotild be`less`than five minutes. A nonurgent call could take as long as three or more hours. The county sheriff's department is "severely" understaffed, with only two patrol officers at any given time serving 65,000 people. For minimum staffing, the But,,. County Sheriff's Department would ne6d to have 60 patrol officers based on a. standard of one deputy per '1,000 population. Presently, Butte County Sheriff's Department has only 21 officers (Grey, 1986). The sheriff's department has a mutual aid agreement with the City of Chico Police Department and the California Highway Patrol (Grey, 1986). Future service expansions are anticipated if appropriate funning is made available. Fire Protection. The Butte County Fire Department is responsible for fire - protection within unigearporatect areas of .Butte County. ` Station 42 at Frontier Circle and Cohasset Road serves the protect Prea. The department operates with one paid firefighter per station in the winter and an additional paid fireffgh: 61, in the summer. a De ` .aid t alto The Butte County Fire Department also has volunteer firefighters who are radio dispatabed to as p p, The Chico area has approximately 40 volubteerso volunteersStation 49 is one of the twelve "patd" stations n the county. The service Berea of Station 42 has an Insuranoe Service 6V%'ice (ISO) rating of Class .5 Hhen 'within 1, 000 feet of 'a fire hydrant and Class 5 beycnd '11000 feet. i! 1 �•�1�2 54" . 45� e SM94ARY01~ STORM bAt-NAGE VAGILITi S 1000 ttED YH THE NokTtt ckdO AR%A