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83-95 GENERAL PLAN AMENDMENT 2 OF 2
The proposed woad is intended to relieve current :traffic problems on a heavily traveled, steep, narrow portion of the Skyway,. Although the new road may en- courage some people to relocate in the upper ridge, Paradise Pines communities, it is not likely to attract a ,ubstantial number of new residents :13.c. Significant reductions of traffic on the Skyway through Magalia should produce beneficial impacts in terms of traffic safety, 1.3.d. Traffic currently passing directly through Magalia will be substantially reduced, with a corresponding traffic increase on the proposed roadway. .Access to Magalia will be easily accomplished from both of the new intersections os the two roads, therefore, only through traffic VIM 'be diverted. Access to and wit"),in Magalia may actually be improved with this project due to reduced traffic and related hazards. 14.a. Fire protection in the area is provided by the Butte County Fire Department, the Magalia Volunteer Fire-Depart- ireDepart-ment mentand. the California Department of Forestry Faire De- partment. These departments operate Ltogether under mutual aid agreements. Access to residences in the area should be increased due to thecreation of two, two-way routes, and reduced traffic :lows tbrough Magalia. 14.b. Police protection in the area is provided by the California. ,RighwaS� Patrol and the Butte County Shoriff's bo artment. The Paradise Police Department also provides Service to the Skyway/Pentz Road i'ntersec'tion which lies Within the boundaries of the Town of Paradise. Reduced trattit access- g increased access- ibility todouble accessroute.-,and y d reduced traffic volumes should alleviate potential demands on police services. 14.e. Butte County Department of Public 'forks will perform regular, routine maintenance on the new road a's well as the existing route. The nein roadway should not require excessive ektxa maintenance services, and should not represent a significant impact affecting tt.1e .Department's presont level of service. 16.e See discussion items '3..e; 3.b., and 3y6. 21 Surveys to detect the presence of any archaeological ox historical artifacts were conducted for this project by James P. Manning, of B.P. Enterprises. (See Appendix �, 4) No prehistoric 'materials or features were observed 5 1 1 1 r i i r {r I Within, the project area. �' previousl One is tor3.c feature Y recorded not was idents red, involvi gt Crete railroad bridge abutmeni, rig the con- r. s on oxther side of Couto len: Road. The bridge Inas . ; _ , the Butte; Count 00nstruc -ed, in -.903 by Y Railroad Compariir,s a original railroad line. part of the The ixti'tially ProPo ;ed road csonfigurat ion required that the abutjn,�:ntS be Would have proposal has been aiod- mowed, however, the fled re to avoidany disruption this historic feature ,03; of thexacnab Cypress Grove lo - at the intersect, Of the Road.Road. Ski and, GoutolE'nc 22. b.p should benefit loll 11 The proPosed project term environ - mental goals in ;:he area in, 1 several mport�9 ways. Traffic hazards should be reduced d�'te to `more safer traffic effic flows. Traffic lent, ' genert�ted noise levels in hiagal a should be significantly reduction of automobile exhaustas well as a , �►Sagal:a will not be pollredLlcedutants. A,caess restricted, and may to proved due to safer and less y actually be im- congested gested traffic conditions, REQUIRED MITIGATIONS 1. Drainage facilities must be installed to conduct water from existing drainages beneath- the :roadway. , Improve- ments will also be required on the aownslope slide to ensure that erosion Tates are not increased. Measures may include the construction Of water bars and rock,- lined channels to slow the rate of sto:rmwat6t runoff and reduce the potential :'Or scouringalong the drain- age channels. 2. Project design have been altered to avoid destruction and overcovering of a portion of the Macnab cypress grove and serpentine outcroppingi boring construction of the northern intersection of the new route with the existing Skyway And Colatolend Road, the serpentine out- cropping and cypre8sesshould be clearly marked off limits to All CODStrUction equipment to Prevent any ,further degradUtiol'i of this habitat. RECOMMENDED MITIGATIONS 36 The new Skyway 'route can be rezoned as a designated scenic highway. This Will Provide the County with an effective means of restricting any Potential future development along the road,. 4. 8ign8 should be erected at both ends Of theeW route clearly indicating the 'alternative Magalia business I route, and encouraging visitors to historic Magalia. . . . . . . . . . . . -19- IV ALTERNATIVES Several alternative schemes were examined before selec- tion of this proposal for alleviating traffic problems along this portion of the Skyway. These alternatives are presented here to further explain the reasons for the present project design. The first alternative examined, was to simply widen and I improve the existing road through,Magalia, increasing its capacity and eliminating unsafe, narrow portions:. Unfortun- atelyy, this alternative is not feasible for several reasons. F'irstt at critical portions of the roadway there is insuffi- cient space for adequate widening. In addition, there is no way to eliminate the steep grade problems along the existing route. finally, maintaining traffic flows through Magalia will increase related impacts from noise and auto exhaust emissions: The second vAternative examined involved construction, of the new road along the railroad right-of-way, establishing each route for one-way traffic only. As originally planned the new route would conduct north bound traffic, south bound traffic would use the existing route. This alternative Was eliminated because it restricts access on both routes, and because it would establish an awkward traffic pattern for uagalia residents who would have to drive around the entire loop to return home from Paradise or travel from Magalia to the Paradise Pines area and beyond. In addition, police and fire emergency response times may have been increased by the loupe: traffic flow pattern. A third alternative which was examined included a straighter road alignment at the north intersection with Coutolenc ?load and the existing Skyway. This alignment would have required destruction of the historic bridge abutients along Coutolenc Aoad and at ?east two of the Macnab cypress trees. When it was determthe botanist's survey that these trees rep- iSome dofith resent t the oldest known of the species, project plans Were changed to avoid any construction through the serpentine and cypress trees. she new alignment also avoided the need for removal of the bridge abutments: final A alternative to this projc-act is the ,no p-oject►, option, in which no changes would be mk a along this segment of the a kyway. This alternative was,hot seriously considered' because' Lc is apparent that some action is necessary to elim- inate or reduce the present traffic 841!ety problem along this portion of the Skyway. -19- i' I DETERMINATION On the basis of this initial study and envixonmental assessment; o I find the proposed project COULD NOT have a significant _ effect on the environment and a-NEGATIVE DECLARATION is recommended, ' I find that although the proposed project could have a significant effect on the environment, there will not be a significanteffect in this case because the miti- gation measures described on an attached sheet have been added to the project, A REGATIVE ,DECLARATION IS RECOMMENDED. o I find the proposed project SAY have a significant' effect on the environment, and an ENVIRONMENTAL` IMPACT' REPORT is required. Datef C �/ William Chef, , Dep ty Director Butte Count Department of Public Works � L X20_ " 1 n 9 ,o -21- J! PHILIP A. L,YDON --ar. J-.•� Consulting teoiogist r c•`n� 2948 San Verbena Way Chico, California 96.926 w% .. (916) 343.9277 February 2, 1983 r TL'OLOGY 'AND GEOLOGIC YVq,),y VE. MAGALYA� ArANG r1 PROpOSEll RJrROUTING EtE$ O TTC COUNTY J: INTRODUCTT'ON Butte County has Proposed establishing a, new, one-way- north segment of The Skyway ,near Magalia follow the gentle The route will gradient of the of-wa olcl. Southern pati right. Y from Peretz Road north to the Coutolenc Road crossing, and thence northwest tb ing, rejoin the existing highway northeast corner of Section 36. near the on I examined the January 21, px'oposed route The purpose of this report is tv of the o provide a description geology of the area,, and to make Of geologic hazards that, night � � general analysis g e,�st along: the. proPOsed .route: GEOLOGY The geological framework of the Sierra in Sutte Count Nevada foothills County has its origin in the eastward movement ;of large, continent-sized Plates of PdClfi c-Ocean the westward-moving crust against North American crustal episodes plate. Three of crustal- major plate collision are known to have affected the northwestern Sierran foothills (Hietaneh 1981) fated with each cc�lli,siAsso c on i zone are major fault sirhulteneousl comes wed Y-fOtMed, wide belts of bent, broiten , and rock ("melange") into mantled which elongate s xic . _. e were Injected. Al of the rocks involved n theearth's -21- Lydon page two February 2, 1983 Collisions g ' � we1�C�e changed in dorm (metamorphosed) by the high pressures and ill ;temperat:ures that resulted. Thema'ddle of the three episodes of collision created a broad melanga belt called the 19HOrseshoe Bend Formation". These roc)0q# which sitere metamorphosed more than 160 million years ago, are exposed irtl the canyons of Butte Creek and West Branch Feather ever, west acid ea, t of the project route (Lydon 132; see geo]- i ,( l map, al-,kaeh6M They consist of medium- to dark; -green, massive to beaded 1rj,Lltamorphosed volcanic rock. Contained 'within tshe Horseshoe mel,44ge unit are elongated slices of former Cantle rock that have :been metamorphosed to serpent rite The project liof The Da.pot lies in thus rock type. #ere the serpen t.nite xst�i + g , o diff rk , green, has a slick -appearing route.nor ck-a ppearxng luster, and is cut by Aumerous small shears that are oriented more -or -less vertical.,+ and trend N300 W. The three collision episodes mentioned above were followed dea long, interval of erosion, during which a rolling topography developed, approximately 3.3 million years ago, the Magalia- Paradise area was covered by sheets of volcanic mudf'low debris and interia er ed sands and y gravels (Tuscan. Formation). The For- mation has a maximum thickness of about 200 ft jest, east: of the south project route, near The Depot, .it i s 15 t o 25 a. Part of the , thick. North. of The Depot, the unit is absent= it either was never deposited,, or else was removed by later erosion, +1 in the Magalia area, the Tuscan Formation was eroded ,x 1 slightly and then covered by 'flows of basalt. Subsequent erosion during the last 2 million years ,resulted in formation of the deep canyons of Butte Creek and West Branch Feather River, and the low -- relief topography of the Magalia-Paradise ridge. South of The Depot, the project route lies Along either the upper part of the TU8dan :formation or the lower pant of the overlying basalt. The Tuscan Formation, where exposed,_ consists of massive, poorly -sorte=d, volcanic-mudelow debris: Broken; boulder- to cobble-si.sed, angular fragments of volcanic -rock are - 22- Lydon page three February 2, 1983 encased in a finer, ill-sorted matrix that contains sand:- to clay -sized particles. Steep cuts along the project route show that the mudflow deposits, although weathered to a relatively - soft condition, are compact and firm enough to stand without the excessive erasion or slumping. The upper part of basalt is weathered to a deep, clay -rich, red soil in placest Large fragments of dark -gray, relatively -unweathered rock are encased in the soil or have weathered out on the surface, in other places, the basalt exposed in cuts is :only slightly weathered. At these spots, the rock is hard and resistant, but steeply Jointed; blocks of rock have 'separated along the steep joint` surfaces and fallen to the base of the cuts. Faults of the Foothills Fault System, which extends from near Oroville southward beyond Auburn, also resulted from the plate collisions. Modern earthquakes, including the 1975 Ord - Ville earthquake, have occurred throughout the System and in its possible extension cast and north of Chico. In the Paradise-, Chico area, numerous earthquake epicenters are located at sites where modern fault movement is not apparent. Such earthquakes presumably are .related to faults that either have not yet been recognized, or else are covered by younger rock units such as the Tuscan Formation GEOL001C HAZARbS Examination of the proposed route indicates that no potential i geologic hazards are present that cannot be mitigated adequately by relatively -routine measures. Subsidenc'eo Gradual: lowering of the ground surface from compression or dewatering of near -surface, water -bearing rock or soil is nota potential problem because the project route lies either on hard rock or on only shallow soil. tost, of mineral resources. 'The project route does not lie on or near any known mineral deposits or resources. - Ex n8ive soil: Shrink -swell activity of soil should not affect the "p'jeut because most of the proposed highway will be Fault displacement. No evidence of active faults was found along the project route. Flooding and drainage. The surface to be covered by the high- way will be ,.';.ess permeable% after construction than ,it was before, so a slight increase in runoff rates during rainy periods should be ex ected. Adequate equate mtigatiorx should be provided by normal construction practice, ini^ludi-ing proper use of ditches, drain- pipes, rain_pipes, etc it is possible that moist ground might be encountered at a large berry patch southeast of The Depot, where the, proposed high- way crosses the contact between Tuscan Formation and serpentinite. Properly --designed drainage„ if needed, should adequately mitigate any potential problem here. Erosion. No evidema of unusual erosion activity was seen along the project route. A slight increase in existing erosion rates could result from construction of the highway, depending in part on whether new fill is place over the 'edge of the West Branch canyon, or new cuts arO made along the west side of the route. Drainage pipes„ diverting water to specific points of impact, also could increase erosion. Mitigation measures could y- p r t n of include. avoidance of o`rer ..a ' 1 stee ..cut , proper compactio fill, use of splash arrestors and planting vegetation on cuts ' and fill. w DegrAda,tibn ,of water quality* A slight increase should be expected in .goad-z;i)xfade contaminants, such as oil, introduced into water runoff. There is, however, no evidence that any such materials will enter existing streams or aquifers in significant amounts Landslide"s and kockfall No e'V'idence of landslide activity along the project royIte tiaras seen, either in the field or on infra -red aerial photographs, small; rockfalls, consisting of'a fear pieces of basalt, might occur 'long cuts on the west side of -24- maintenances Snou-Lu De aueyucLv—u [nia i.�+a�. vii.. Vo`lcanasm. A generalized analysis,, of volcanic hazards in the United States (Mullineaux: 1976) indicates that the project route might be covered by 5 to 20 cm (2 to 12 inches) of ash from a volcanic eruption. near Lassen Peak, provided; that the eruption is significantly larger than that of Mt. St. HelenP. in May 1980, and that high-level winds blow from the due north. Since both of 'these independent events (the eruption and the wind direction) are un- likely, the combined probability of ash reaching the proposed high- way is very slight. Earthquake activity. The primary effect of an earthquake is ground shaking, a complex horizontal and vertical movement of the ground. Secondary effects include soil, slumps, soil liquefaction, and rockfal.l Liquefaction, the causing of a liquid-liXe condition in 'loose, granular, saturated soii is not .likely to occur, because soil along the project route is firm and contains clay. Slumping (small slip outs) might occur in steep cuts or improper ly+-compacL A fill - Small rockfalls might occur if loose pieces of basalt al'."s present at the top of roadcuts. Significant earthquakes in the Paradise-Chico-oroville area (DiVi Mines and Geology 10783 Real et al 1978) include one of ma��nitude 5,,! about G mi northwest of Stirling City in 1940, magnitude 4.6 east of Chico aboult 6 ma, north of The Skyway in 1966, and magnitude 5.1 at Palermo in 1975. These were at dis- tances of aboilt lai ll, and 27 mi from the project, respe--tively, Earthquakes for which magnitude was not recorded include one east of Stirling City in 1942 and southwest of Paradise in 1945, i; They were 8 and 5 mi from the project. Both had an intensity of vY on the Modified Mercalli scale, sufficient to crack weak plaster or break windows, but not likely to damage roads. Several low -magnitude earthquakes were recorded in the i -25 Lydon- page six February 2, :�1%903 Paradise-Chi'co-Oroville area following the1975 Oroville earth- quake (Marks and Lindh 1978) the nearest. were about :1 mi south west of the project site; Although mostof these earthquakes were so,emall as not to be felt, they show that the region is one of on-going, modern seismicity. The project route, lies within the general area of the Foothills Fault System, which is generally considered to be capable of pro- ducing a maximum credible earthquake of magnitude 6.5; evidence leading to this conclusion is summarised by Division of Mines and Geology 8taft (1979). Based o this, it is rea n sonable to antic' pate the project site being subjected, to a magnitude 6.5 earth- quake centered at a distaftcee, of 20 ml' or less. This suggests a peak horizontal ground ar-�-- 'Ition of t).2 to 0.4 g (20 4U.6 40 percent of the acdelera, gravity), which it- turn corresponds with toughly a Modified, rA. intensity of v13:1 (Hays 1980). This is in agreement wit ..i:Cl. CJunty General Plan (Butte County 19.77, p. 11-17), concludes that the maximum ground shaking to be anticipated Jutte CoLulty corresponds to a Modified Metcalia. intensity of VIXI, V.,th local variation. from VTI to 1xi It is hot li4'1.al7 that the expected level of maximum ground shaking, which could cause damage to buildings, towers, and otller structutos, would cause more than very minor damage to a highway (slight cracking of the road surfade, for Lxa,�ple). R 'EFF MENCES CITED tUt_e County, 1011i Butte County denekal Plani. County Planning Dept., unpublished-, Sec. Il Seismic safety 'elemeh-E,* 23 p. DiVisiOn of Mines and GeoloqyO 1978, EarthqUake Catalogue of Ca llfdtnial magnetic --tape compilation of data used .1th pre- paratioh of map by Real of a14 1978. Division of Mines and Geology Staff, 1979, Technical "reviews of the seismic safety of the Auburn damsite: Calif. 'DIV. Wines and Geology Special Pub.. 54, 11 p. j4aYsi W -W., 1980, PtOcedUre, 'or estimating earthquake ground motions.. U.S. 0061,: Survey Prof. Papyr 1114, 77 p. 6-26- r� seven Lydon page • February 2 , 1.98,3 Aetanen, Anna, 1981, Petrologic and structural studies. in the northwestern Sierra Nevada, Cal.forn•ia: U.S. Geol Survey Prof. Paper 1226. Lyon, P.A , 1982, Reconnaissance geology of the Stirling City 7.5-mini quadrangle and parts of. the Paradise East, Paradise West, and Cohasset 7.5-wmin. quaurangles: Calif. Div. Mines and Geology unpublished repoJet, map scale 1:24,000. Mar)Cs, S.M., and Lindh, A.G.,, 19%, Regional. seismicity of the Sierrwi foothills in the vicinity of okoville, California: Bull. Seismological'Soc. of Amer., vol. 68, p. 1103-11154 Mullin6auxy D.L., 1976, Preliminary overview map of volcanic hazards in the 48 conterminous United Statest U.S. Geol, Survey Map MF-786, scale 1:7,500,0100. Real, C.9*, et al., 1978, Earthquake epicenter map of Cali.Eornia: Calif. Div. Mines and Geology Map Sheet 39, scale'L:1,o00,000 �`v4 i7� Phi li p A . Lydon Calif. Registered Geologist # 144 Enc l: geologic map _ F R 'ST -Grave I /'i l �'�� - • ' ;�}' I %" r. �: �' x • 1 i '• (jr.O .AGIC MAP OF TH'E -�- 1 1~i)WALIA AgEA, _.BUTTE CALIFORNIA I 11 COUY�'1'Y, C ginIt on ------ t, 1 p 1000 feet I • n w I T BM' i. a pprox. scale ass J 1 �; C !.XPLANATION I ' ,' / <� � S J : PO ti ► 1 =Lj FILL, magailla Dam / e , •B J basalt ry 'IS1yj / .^rte Tuscan Formation 71 volcanic wadflows --� , serpentihite Horseshoe Bend Fm mtavolcanic rockloll I �It i` � e G_� B • ` , Geology by P.A. Lydon ►� 1 ,... A- �, k•- 198.2-83 Ali_ -7. TT— . t ` ,-. Topography enlarged from , / •/7.50~ -w ' �_,,� / a '".• . USGS Paradise " y uadran M , r . ,may ' 1 / ♦ - V'• e 1 r r r _ • B, Rare and Endangered.Species. One rare species of ily, fhe Butte frit )laded t;Eritilloria eastwo,odiae), whose prf;clse status is controversial, has been observed on the serpentihe rock formations immediately adjacent to Coutelenc Road and also has been reported from other areas -29- SURVEY FOR RARE AND'( NDANGERED<SPECIES OF VASCULAR PLANTS LA TS ON A PORTION OF A1BAN'rJbNED RAILROAD BED AND ADJACENT LAND, BETWEEN PENTZ-MAGALIA ROAD AND, COUTELi NC ROAD, MAGALIA, BUTTE COUNTY. (� A. 'Habitat. I The project site consists of an abandoned railroad bed and adjacent land extend - i41 between the Pentz-Mi alia Road and a int 'ust 141g r�9 po' i north of Coutelenc Road; east of and parol.161' io the Skyway in Sections 36 and 31, Paradise East' Quadrangle; Except for a sinril1 strip at ,he north end of the site, the rails have been removed. Several dwellings are various points along the margins of the site, with the old Magalid railroad 'sfotion.present at the north and of the site. Present access is via the Petift-Magal is Road just east of the Skyway, or via Coutelenc 'Rocjd just east of the Skyway. The habitat type of the area is predominantly Yellow Nine, but with the disturb- ances a railroad and subsequent abandonment a number of introduced 'Species, pc es, nofably'Scotch broom, have also, become established and certain species t _ p ins more often associated with chaparral are flourishing along the margins of the site, Yellow Pine Zone Vegetation typical of yellow ,P, me zone is present throughout the site: Species 'fl rioted include ponderosa pts" 3s, California b,�Rick 0&, marzanitas canyon live oak, bracken, California bay, Dougla-t fir, sugar pine, dee-,b,-,=,jsh buckthorn,, Nuttall's' bedstraw; poison oak, bush poppy, klamath wised, woolly sunflower, silver bush a lupine, wild buckwheat, mistletoe, 6lockberry, California' buckeye, silk tassel bush, clover, mugwort, toyon, phacel ia, smooth cats ear, Scotch broom, French broom, buckbrush, chickweed, chicory, tarweed, horseweedi apple, mulle(n, vetch,, miner's lettuce# willowherb, 'black locust, yerba santa, dock', prickly lettuce, Japah,NAe quincei 'rose, grape madrone, wild sweet ea digger p ' pine, annual lu i ns, cliff brake fern., prou, p' nd ivy, English plantain, cudweed, cliff brake fern, 9 rasses# and others. The predominant woody species on the small str(p of serpentine rock just north of 'Coutelenc Road is Macnab cypress. B, Rare and Endangered.Species. One rare species of ily, fhe Butte frit )laded t;Eritilloria eastwo,odiae), whose prf;clse status is controversial, has been observed on the serpentihe rock formations immediately adjacent to Coutelenc Road and also has been reported from other areas -29- r, r 2. in the vicinity of the project site. Threw other species that occur A in the vicinity test of the Calif- alif-have been ro �ose�� for inclusion inc the "rare but not endangered" haveb P i for Cal morning glory �.a 1 -- orn a Native Plant Society. These are a subspecies of westetn (Dentaria pal sena vas• dis_._ ecti�' buttensis) a toathwort stegia atripliciifa_ 'lia ssp. b !----�^-- All four' of these speclos are dtfficulf ion Allium c��atericola) folia), and a wild on ��Irlum i...r.------ dormant in midwinter but all flower in the spring. Remnants to detect when they ,are season s growth of ,thee species were not ab;Fr�rved January 17 during . ' of the p reviou�s the initial field survey bund subseiquent check for their presence will be mode a later more appropriate date, serpentine formation flora north of Coutelenc me rof tile ©ne conspicuous abs Cu r'essus macnabana) This species is not currently is Nlacnab cypress (.,...p- --- - • Road the as rare and endangered, but the Mcigajia grove, aitiong others, has been recognized interest because of 'the great ag e of the trees. Some trees just north particular cit' rtr eat to be between of Coutelenc .Road have+ bean checked .with in�.remenf boring and app the south end of the - 'Scent to the Skyway at Y "fdct, one tree adi 200 and 300 years Coutelenc Road) was I t 100 feet north of the intersection with serpentine farm (about the species until a officially recognized forestry lourndls as thet champion tree .of I larger s ecmen was dissevered in another grove (about ten years ago. slightlyp includes he destruction Accordingly'; it is strongly recommended that if the project of this trier it be modified to preserve if if at, all possible: it would be desir- 5 ince the. Butte fritillaria also occurs on this serpentine outcrop feasible to :achieve . able for the project to stop at CO oUtelenc Road itself . If it Were in serpent areas would be avoided= problems associated v�ith construction: fbis,other pro i introduction of asbestos fibers into the atmosphere when Such problems include the serpentine dust is raised by heavy equipment used in road construction. As the project . be 'aware several mo.jor lawsuits are currently pending (e. g r at San engineers may • through serpentine: Benito) over asbestos dint raised as a resu of road construction h w y Kingsley R,'Stern Senior Field Botanist Deportment of Biological S :'fences California State University Chico, CA X5929 (916) 595w5381 0 - -30- r, : - _- •. -_ ". SPECIES OF VASCULAR PLANTS ;r THAT WERE IDENTIFIABLE JANUARY 17, 1983, THE SKYWAY DURING SURVEY FOR RARE. AND .ENDANGERED SPECIES ON PROJECT At, MAGALIA, BUTTE COUNTY. �< - 110MMcity NAME SCIENTIFIC NAME Ponderosa pine Pinusponderosa .- nus Digger pine Pinus sabiniono ----� Sugar pine Pinus lambertiond California black oak Quos kellog9i Canyon live oak.... Quercus ch rysoleps Douglas fir Pseu a menziesii Deer brush Cea�notthus integerrimux Buckbrush Ceonothus cuneatus ----_ Buckthorn Rhr omnus croceus Bracken Ptar� ld um aqui_ I�inum Toxicodendron diverssiloobum Poison oak California buckeye Aesculus �-.-.-- cal ifs„ Silk tassel bush Garryo a fremonti i Dendromecon ri1j1da Bush poppy Scotch broom C..^Ytis sco arius French, broom. C tisus mo�nsses! u!Ia�, �.�'---..- Apple P rus molus ,.. Choenomeles la�en_ario Japanese quince Grape Vitis sp ....�... Macnab cypress, ona Cu ressus macnob Nuttal I's bedstraw Cornus nutioll i i Klamath weed Hypericum perf„ o_,_ rotum Woolly sunflower Erio h Ilam lanahum Silver' bush lupineLuteus. alblfrons Annual lupine u L_ --nus sp. Wild buckwheat Eriogonum nudum Mistletoe Phoradendron spy Blackberry Rubus urss1hus. COMMON NAME SCIENTIFIC NAME Clover Tri folium sp. Mugwort Artemisia douglasiona _.------------ Heter4 omeles arbu� ti�a Toyon phacei ia Phacelia sp. - " ------- Smooth cats earis globo^ Common Chickweed Steplaria media , Chicory Cichcrium in bus TatviePd Grimm cam rum _ Horseweed Con zo sp • _ Ground ivy Glechoma hederacea Mullein Verbascum fhapws Vetch l` VVica sp. Miner's lettuce M.. onria FerS--- of i to Willowherb EEilobium sp. .pseudo-acacia Black locust Robina Yerba santa l:riodaatyon californica, - Dock Rumex Cris us - Prickly lettuce Lact�ca serr� iota. Arbutus Menzies" lvladrone — Wild sweet pea Lath eus latifolius_ Cliff brake fern On chium densum English plantain plantago lanceolata Cudweed Gnaphalium sp= California bay Umbellularia caiifoenica Aectostaphylos monlonito Manzanita Pole manzanita Arctostaphylosyiscida 3; l terranean ry Me m h Hordeustrlxed _ x, I REPORT ON A SURVEY FOR RARE AND ENDANGERED SPECIES SUPPLEMENTARY' RAILROAD BED AND OF VASCULAR PLANTS Ot• ,`,pQRTION OF ARAN DC7NED 'i GALIA ROAD AND COUTELENC ROAD,'' ADJACENT LAND BE -TW I,ENTZ- COUNTY MAG�,WA, BUTTE the initial , y Dur ial surve on Januar 17, 1983, it was noted that it was too Du 9 species bf, tants to have begun early in the season for certain rare: and endangered sP p growth for this y ear• Accordingly, a folIlowup survey was conducted on March 18# . ned, either would. be flowering or have made a elate on which the speciescancer ositive identiftcation. As in the initial survey, no evidence growth sufficient far p species was found. In additions of the .presence at this time of rare e and endangered o mall pop uta#ion of Butte-fri�tllaria {Friti,, I,iQ eastwo°d'�ae), which +Mas known to ' a r he. Skyway exist along the Skyway about one hundred feet north of Co utetenc Road no longe been obliterated during the widening oft yw Y exists, it apparentlyhaving several years 'ago MARCH Id I e ADDITIONAL SPECIES OBSERVED DURING THE SUPPLEMENTARY SURVEY, COMMON NAME SCIENTIFIC NAME Wild ginger Nuttc+ll's bedstraw Sow thistle Sedge. Rose Clover Old man of spring California soaptoot Fawn Illy Western hound's tongue Cofe, eberry Yarrow Wild iris Bedstraw Asarum hariwegii_ Galium nut_al My Sonch,-us arvensIs Carex ep Triffolium hirtum Senecio vulgaris Chlorogalum Domer dianum Eryth_ ro nlum multiscapoideum Cynoglossum� grande Rhamnus cal%f n us Achillea spy Iri rs as �egii. Ga 1 41 Utv1,,22ar- ine Eriodict on californcum sp Vinca ►"--°J°r Vetbrasr cUm� 5—s 33- Yerba $onto h�arr'otbea� �' Perwnkle Mullein Asarum hariwegii_ Galium nut_al My Sonch,-us arvensIs Carex ep Triffolium hirtum Senecio vulgaris Chlorogalum Domer dianum Eryth_ ro nlum multiscapoideum Cynoglossum� grande Rhamnus cal%f n us Achillea spy Iri rs as �egii. Ga 1 41 Utv1,,22ar- ine Eriodict on californcum sp Vinca ►"--°J°r Vetbrasr cUm� 5—s 33- I K 1 3' APPENDIX ZOOLOGIST'S REPORT PROMSED RAILROAD'BED ALONG SKYWAY FROM PENTZ TO COUTOLENC ROADS` Habitat Description The area is upper foothill hoitat with pine-oak forest and chaparral interspersed. The area to the west of the proposed new Skyway is approximately rally it by only 20 to 100 pa led on the west by the present Skyway,diverging from yards.. To the east only a small 10-20 yard strip barders the rail bed before it drops sharply into a canyon. The bordering, 'vegetation ranges from sparse and open forest with some underbrush to dense chaparral, rValue as Wildlife Habitat The value of the area as a wildlife habitat is minimal because of its narrowness and present disturbed state. The actual area along both sides of the proposed_ new road is not very large and thus cannot support large populations of any vertebrates. Although there undoubtedly would be some vertebrates that nest, build shelters, and obtain food here, it certainly would notr,be a major breeding or feeding area. I suspect that many birds and mammals found in the area are there only temporarily. This patch of habitat is close to the present Skyway, a fairly heavily traveled road. The noise from the traffic .is a major disturbance factor that consideroW y lowers the wildlife value. In addition, thero is evidence that 1 _ off-rddd vehicles are : ax'►;g the rail bed fairly regularly. Many vertdbrotes would be driven away from tho ixi eo by that activity alone. it General Wildlife Observations There were a number of species of birds observed, !,.Vt few traces of other vertebrate wildlife were evident: No doubt there are reptiles ,rind some am- phibions, and several bird and small mammal species inhabiting the area,, There are probably no endangered species in the area. Although Bald Eagles and Golden Eagles are known from the general area it is very unlikely that they ' would use this strip of habitat for any reason. A=list of vertebrates likely to 6e seen, at -least on occasion, in the area followt6 Those marked by an-asterisk were actually obset- a during the field: studies, -a35� to D i , I. jl Am hib'tans rsalifornia Ne-mt (Toricho torosa) Co 'll . Slender SaTam�.an er a rdchosep5 , atten�►atus) Westiern Toad (Buffo boreas) r' Pacific Treefrog -y a regilla) Reptiles Western Fence Lizard (Scelo"orous occidentalis) Alligator Lizard (Gert onotus sp.) ,Goper Snake (Pituo is ,ca enifer) W Rattlesnake(Crota is vir�ri is) Birds Turkey Vulture (Cathortes aura) Cooper Is Hawk (Asci ter cooperiiti) Red-tailed Hawk. ateo jamaicensis American Kestrel Ifal,Lco s,�rvex+.us Calif. Quaid. (Lo port x caifnxcus) Band -tailed Pagan um" a�"�asc� iaa) Mourning 1k>ve (2enai a maces a Screech Owl (gtus asia) Great Darned awwh(Bu6' vir inianus) Common Nighthawj ( ordei es minor) Rufous Hummingbirds(Se as orus rufus) Anna's Hummingbird (Co yptt„e onna) "'Common Flicker (Coloptes nuratus)' Mellow -bellied Sapsucker phyropicus varius) Hairy Woodpecker Dendrocopori-villosuss� Downy Woodpecker'(Den roco as a escens) Nuttall's Woodpecker(Picoidesnu- uttallii) Lewis' Woodpecker (Melanerees lewis Western Wood Pewee Onto us so`r�i ulus) Western Floycatcher; i onax di is us) Ash throated Flaycatcher larc us cinerascens) Tree Swalloly (Ir�ido'rocne bicolor) *r13mie%m rrn%o tCci7i us brachyr vnchos) i � e' Wrrenn White= Brown BeW16 6 House Mockir *Am. Rc Variec Hermit Ruby -I wCedar Yella� I -Nut atc (Sittd cap �, Unensis ) (Certhia faris mi ia ( it omanes wic roma fes ae on imusgox c77 Los) rd us miaratoribs) (I xareus haevius ) (cotharus autat_a) Kinglet (Re imus calenduld) (Bomb n* la cedrorum) Warbler (L�endrb-� c�a) r ,36 Birds continued Y *Brewer's Blackbird; (Eu h6clus c,��anocepholu�s Black -headed Grosbeak PheuctLtus melanoceehalus) "Rufous -sided Towhee' (PI§i - �1c--c ear thrr`o'�ithalmus ia Waite -Crowned arrow ono' -tx� .Son S arrow elos iza-meladichia leuca hr s) Bolden -Crowned Sparrow notric is atri— capil a) *Dark -eyed Junco (Junco ai en Evening Grosbeakes er�i ,a ver ertina) „».c Neuse Finch. (CorpodocUs meltscanu5 American Goldfinch rdvelir s tristis} Lasser Goldfinch (Carauia 'psa tria Mammal: Shrew (Sorex Bats (__V+O� i5 5 ) Black:Fai ce Jackrabbit (Lepus colifornicus) Cottontail Rabbit (S ly_ilaOus au a nii CA Ground Squirrel Titel�.us t)eac ie i CA Gray Squirrel (Sciurus griseus) White-footed Miceerom scus spa) %food Rate (Neotoma fusci es Meadow Mice *crotus,sp. Coyote (Cardsaatrana) Gray Fox(Toc on:cinereoar entueus) Ring -tail assariscus astutus Spotted Skunk i o ale utorius) Striped Skunk ( itis mephitis) Pocket Gopher ( oom�om sSP ' Mule deer (Odoccil leus hemionUs) Suggested Miti, action Measures It seems that much of the cleori.wg and roadwo-rk that would need to be '. done has already been accomplished. I would suggest, however, that no add- itional vegetation be remwed as, it does leave as a buffer between the present Skyway and between the proposed Skyway and the canyon: The additional disturbance caused by traffic would probably not have a significantly greater effect than already exists clue to the present Skyway: -3- -37- References Blair, WF., et. al. 1957. Vertebrates .of the United States,. McGraw Hill Book Co., N.Y Burt, W.H. and R.P. Grossenhe derr. 1964. A Field Guidetothe Mammals. Houghton -Mifflin Co.,, Boston. Holt, V. 1962. Keys for the Identification of Wild Flowers, Ferns, Trees Shrubs, and Woody Vines of Northern Colifornici. National: Press Books, Palo Alto, CA. Ingles, L. 1954. Mammals.of California. Stanford University Press. MonoliS, Ti, and B. Webb. 1979. A Checklist of Butte Co. Birds. Altacal Audlubon :Society, Chlco, CA. t Martin, A.C., H.S. Zim and .A. L. Nelson. L951. American Wildlife and Plants: A Guide to Wildlife Food Habits. Dover Publications, N.Y. ' Co., of Natural History. McGraw- Hill cGraw Pa1mHillEBookfl��N,YFowler. 1975. Fieldbook Robbins, et, 61. 1968. Birds of North America. Golden Press, New York. Small, A. 1974. Birds of California. Wincherster Press, N.Y. Stebbins, L. 1958.` A Field Guide to the Western Reptiles and !amphibians. Houg6ton4Aifflin Publishers, Boston. Storer,-T.I and.R. L-. Usinger. 1963. Sierra Nevada Natural History, Univ. of California Press, Berkeley. Verner, J. and A3. Boss. 1,080. California Wildlife and Their Habitats: Western Sierra Nevada. General Technical Report PSW-37, Pacific Southwest Forest and Range Experiment Station, Berkeley, CA. Survey and report conducted by; Roger J. Lederer, Ph.'D. Department o! Biological Sciences 1 California State University Chido, CA 95929 (9i6) 895-.5356 `4"` y t l r ' ARCHAEO't,,OGICAL S'31RVEY FOR THE SKYWAY :IMPROVEMENT PROJECT LOCATED BETWEEN COUTOLENC ROAD AND PENTZ-MAGALIA HICHW4Y BY James Pi M Luning Archaeology ;Conspiltant Prepared: 1,'or1 EC O-ANA L; STS 114West 7th Avenue Chico, CA �95926 The Butte County Department of Piub!31 Works plans to construct two additional. lanes for traffic `a'o the east of the Skyway, between the intersection of Pen�:z-Magalia Highway and the Skyway and the intersection of C outol e ,Road and the Skyway. The project involves a 100 foot wide right-of-way extending for approximately one mile along the abandoned Southern Pacific railroad line. The proposed roadway is located along the east side of Magal.ia, north of thy, city of Paradise in Butte County. The project area extends, from the SEJ of the SEI of Section 36, T'. 23 N. , R. 3 E. ; ",I north. along the WJ of the W* of Section 31, T. 23 N• R. 4'E. 0 Paradise East Quadrangle, 7.5' series (see Map i) PRIOR DATA REVIEWS Prior to conducting the archaeological survey of the project area the archaeolwa --%cal site record files maintained at California State Universityi Chico Were consulted to determine if any previously recorded archaeological sites were located within the vtc4zity of the project area. The "Historic Pioneer Church" lobiLted along the east side of the existing Skyway in Magalia is listed in the National Register of Historic Places (see Flap 1) The church is outside ' of the boundaries of the project t.,xea and will not be impacted by the proposed project. No additional prehistoric or historic sites are listed as being within the vicinity of the proposed project. DATE OF F18LD SURVEY t January i 8, 198 ENVIRONthe eastern gedeTofN4i The Ma alia Ridjgeot area is overlooking lotheed aon Canyohg g g �' formed by the West Branch of the Foathen River. Elevations within the project area range .from 23.8 feet at the southern end to 2360 feet at the horthern end. pwo. Ban wo Chom(uo 6mT."m Phow 6dJI,�!-J5@8@ The vegetation was of moderate density, but did not restrict acces to any portions of -t;he project area. 'Types of vegetation noted were oak, pine, toyon, manzanita, blackberry vines, weeds and grasses. The only surface water in the prosect area comes from small., ephemeral drainages flowing west to east. 'HISTORIC .BACKGRt1UNDC The .history when Magalia began in. 1850 at the beginning of the Gold Rush,, E.B. Vinson and Charles Chamberlin established a gold camp here known as Mouhtcaii View. This name was soon changed to Dogtown because Mrs Bassett, the wife of one of the camp's early settlers, bi^ed and sold dogs to the miners of the area. The name Dogtown stuck until November 141 1861 when the post office was' transferred here from Butte Mills. Mr. A.C. Buffum felt - the current name inappropriateand suggested that the town be named Magalia, the Latin word for cottages. Nor. Buffum successfully argued that this was a town of cottages and not of dog houses and so the name of Dogtown became Magalia (Gudde 196901 & 190) During the Gold Rush Magalia served as one of the mining -- centers for the Magalia Gold Mining District. The district extended from Paradise in the south to several, miles west of Fowellton in the north and is bounded on the west by Doe Mill. Ridge and on the east by the West Branch of the Feather River. This was once one of the more productive placor mining districts in California, with the total output est mated to bk as high as $40 million. Numerous drift mines were used to mine the placer deposits located at Nimshew, Forks of Butte, Mineral. Slide and De Sabla. !'he- ,: most famous gold discovery occurred in '1859 ,and involve, a54 pound nugget known as the Willard, Dogtown, or MtLgal-ia Nugget. Large-scale gold mining lasted until. the 18980, with some activity between 1900 and 1.930 • A minor resurgence in prospecting and development began aftbev World War 7[I and has continued to ,the present (01ark 3970188): Magalia further 'benefited from the construction of the railroad line in 1903. This ,Line was constructed by the Butte County Railroad Company to ,link the Diamond Match Company, located: in g i gFd tys ConstYucta.onlof ������lo ging operations in Sterlih ached line started II Barber and had re Magalia by mid-�Cctober 19.0,3: Part of the railroad line involved the construction of a depot in Magalia, which was completed in 1903. The Butte 'County RailroadL Company turned 'over the line to the Southern Paoific 'Rai.l.road on December 1, 1915 ;Stevens 19M O Mrof the s Carl Worthington, a Magalia resident, is currently working restoration of the historic Magalia Church and has cbaducted bacicground research oh its hi'storye Mr. Worthington Was responsible for having the church placed on the National �i Register of Historic,_. dces. Mr. Worthington was contacted concerning the proposed project and .provided some background information about the church. The church was originally constructed in 1896 along the west side of Neal Road, which was originally a cattle trail between winter and summer grazing` ranges. The locaticin of the church was somewhere in the area of what is now the intersection of C`outolne Road and the Skyway. The church was moved in 1904 to its present location. The original town of Magalia or "Dogtown" was located mostly within the area to the West of what :is now the skyway, between `the intersections 'with Pentz-Magalia Highway and "Coutolno Road. A plaque commemorating this site was erected by the E. ClampUs Vitus Society and is located at the intersection of Coutolnc Road and the Skyway.. The town had a small section known as "Chinatown" made up of G—Uhese miners that was located directly across the Skyway from this plaque, One story attrib'u-ces the presence of the "Macnab Cyprc A Grove", located next to the plaque, to these Chinese miners, ,:ao supposedly planted them. This story is probably more folklore thas,,,fact; since Macnab Cypress (Cupressus macnabiana) are native trees that generally grow in serpentine soil (McGie 1982). The presence of these trees is probably due to the serpentine outcrop located in this location. FIELD SURVEY METHODOLOGYt The field survey involved a 100 foot wide area along the existing railroad grade between the t -,yo road intersections, The railroad grade was not sensitive for archaeological materials or featurest so the focus of the survey was the ai,,eas along either sine of the grade that had not been disturber during its construction. The area within the 100 foot right-of-way was intensively examined ,for j .e of early historic br, 'Prehistoric materials or ihdgi.caggv g r g + ,;.er side activities b walkih zi Sa xn transects along 'ea-'. of the grade Total coverage of the proposed project area was achieved. FIND.INGSs No prehistoric; materials or features were observed within the project areal The only historic feature observed, which had. hot been identified during the background research for the area, was the concrete abutments for a railroad bridge on either side of Coutolhe Road. The bridge was part of the railroad line constructed in 1903 by the Butte County Railroad Cotnpmyi The bridge that spanned these abutments is gone and was probably removed when the railroad track was disassembled,. These bridge will probably be destroyed as part of the roadwaconstruetio_ The Mag i.at historic i 'elle Depot and Mag al�a Pa.�.oneer Church are :currently rks and should not be icd impacted The proposed road alignment may im act the commerative'"Dogtown" plaque and the "Macnab Cypress Grove" located -at the intersection of the Skyway and Coutolne Road. RECONMMDATIONSt The proposed project may 'impact two historic features, the railroad bridge abutments and the"Macnab Cypress Grove0o' recommendations are ' �� Two proposed to mitigate the impacts of these features. I . The "Macnab Cypress Grove„ is , irreplaceable historical feature that is significant only in its natural state. It is recommended that the trees be preserved by modiyixxg the' ;�,oad alignment 'so that this grove is left undisturbed. 2 The ra11road bridge abutments are in the proposed path of the roadway and will probably be destroyed during its. construction. The abutments are only one feature of the _ techniques utilized at the time of its t of the entire railroad line, but it does represent an aspect .s cunstruction 4 -the impacts from the ,proposed project tocthytruction To .mitigate p feature it is recommended that detailed drawings of its construction be prepared and photographs from various angles be tauten by a qualified archaeologist or historian. This would insure that the historical data the feature contains would be preserved and available for future reference. Upon completion of these two recommendations archaeological: clearance for the proposed project Would be granted* Biblioa'ra h Clarki William e. 1.970 Gold Districts of California. California State tDivisori of Mines and Geology, Bulletin 193 Gudd`e,.Erwin G. 1.974 California Place Names. University of California Press b Berkeley. 1 C;uddej Erwin Ge 1975 California Gold Camps. Universityof Cali; a orni Press. Berkeley. NIcGie Joseph F. i9$2 History of Butte County, Vo].. ie Butte County Board of Education. Stephens. Kent 1977 Matches, Plumes and Rails. Trans -Angle Books. Corona Del Mar, California M t •� i a I'a ,l yiya) ( 1i. )I I ':•�,1 ))A � � ��� iii)$ o n , ht l •_�� r''' i-� Irl,/N .. rUlu ��, i,,� � „y {14 Iii ` t r°,' �, � ���`y � � � ✓;�1 /. 4-� r 1 ° 't % • , % � r I '/ r �'. Ill •'Yl 1�oy N - t ?4 V4 lo� h! � ,�� I" � a • �` I • " t fi 1�. fir" Y yh k� i �_ a i��,1JyrJ�• �C� 's pa•. �]L'[~"1' .tri V ) ""• FI/%t III !.,. _rt. 1^dx rt" ,r� jt a #�k t•` .:` �•' r". VA \it, ` NN .� x / .� �•rr x' 0.',4 N p1tilve •r „�.4r+' �.��`. •, 'j1`, Oft ° �� " �" G �t'A�l. • Sew 1� :, �llj ," A" & "s � ��iY�fl,���t►i1� ' N " Jr " �'I,w,�`" . � i a v r� i "\ , p � � �, • p d /�- 51 11111 ♦ _ . t . `�{a .� I , "'v i" j It �Ott7kput �r � .s, +Y . �', • iiry}}d ..}aa��,1.'� '' ` � MN t �,'�4 r t. 1 4 � 1{ � 4�QF�1� � �ilq 04 1",.1.I ' i f/�, ,,• G r. �. f "e".s �� " •�'.!I 1 a�'ar. f , f. � �'• ` a ri � W i " '��"�Y.!'w�% '�;• % Jb It i uY� t.� •}+^,r „ar..4t ..x ,� � , � r� 1 .. FI ,art.. r. '�r` .� � r' / '' _•� , � "� "4• "� trl, 1j) `rllgf �. wjJrl IIPy I�� 4."F •. i� r �t M. 4 Y ..; " ." • tr' �. Tank r +i3 a�'�II y r31 UIOh it " ' " � ✓� ` h � 1 t � X11 11rr , ,^ , ., , t, .. ' �I Y ` q'� • t .... MAP 1. ' r y 1 3 .' ��"` ' �" �/� �`� l�.: � � Project Area / 2 Magalia Depot r { r° a { t s 1 ` '• . w' 3, Magala Church `^ ` r 4 �p Macnab C rens Crow r •." a . j I! etl S, Railroad Bridge a 1n .. lBl@ F110 11011 01 p 1.� . +., + :,.4 , - " i "' f G"r i fes, ` Y 4��� •� � t u � r¢ ru -•� , N ti we '� r. } �� ` �" y ' I • >~— ���„ r . r '.« .� ; y �,ttl,,,� r. _�t+uslaci , � .J. i e ✓�. t`i ' • �' '+� °� �,r` ` ft7c ,..'r (I Vit, { ;� i,.,.�r :.. , ..Y .' `� �'� ,�,�' .I 'L•g.. r !' Y �,.r fl � - a:txti 1 1 " __ _ G e." e - • f1. 1 � � 1 \ � "j r +"��� �"� t " 1 • , tP . r f t r r t �. �PVAb t+a� Y ' .. a aria± �, >p •SMa"• •wr / t. ,,; 1 y�Y � i •,' � : I IIlj�} �� p. , � • At t. 'i''"t ' � `li � � {, � tle��� w+l " i • it I Y `� : y �s ' ri�, ,#+ �l �, Nen, & n '- +o m oil,. - Feburary 4s 196 Dr. Albert J: Beck 114 West 7th Avenue Chico, CA '9592 Dear Dr: Beck At your request! hive completed the recommended mitigation measures required f(r archaeologioal clearance of the Skyway" Improvement ProjecentZ t located between Cthebarc) iaeologicalPsurvey Magalia Highway. my report covering of the project area recommended that scale dirawings and photographs be prepared of the railraod bridje abtitmer� �' •thes me osed3 were proposed located along Coutolenc Road, These ttposed':'project mign to mitigate any adverse impacts p P l feature. have on this historical trie bridge <Cbutments j�;ave been prepared Four scale drawings the general showing an aerial view of the brid@;e layout, dimensions of the bridgev details of the bridge nts. Twenty notches, and 'details of the coping on the abutments. photographs of the bridge abutments were akl3 tn from various angles and show osanneddetails these abutmentsfiisbnomlonger The bridge that oncep _ P In place The bridge abutments are made from concrete 8.nd marks on the. abutmen-cs indicato that the forms utilized We're made from twelve inch wide boards. The bridge was constructed in 1903 Company as 'pant 'of the railroad • tch Company in barber with b� ehconnRailroE ecta.ng the DamonddMa �. The rai�.road,..line lin o orations in Sterling 01ty•, their logging P was later taken _over by the Southern Pacific Railroad and has since been abatidonedo The drawings and photographs, of the bridge abutment$ will be Cal forma State Un°iverti.io '- Chico maintained on file. at the will be available to interested Archaeology Lab, where they parties. It is therefore recommended that axchaeologica,l clearance for the proposed project be, granted • S, 'ncerely yours, r , I ' awed p. Manning' rchae ology` Con etltant _. o a o 9hDQ4CS1GDt`�4 4"s�e � O/a NJZ7'VY �IlIlI1lSVIV���t�J1/L50 °N>W?�7/ IYI11�Q�4 I, N� DETAIL CONNG & BULDGE ,s ! ( i f` t i t 14 2 I:: 1 I ! t !. ! t t C off 12 ''` 14a SCALE•c 1' � � � r � � � � � � � �_ � � � � �j �. NOISB ANALYSTS An expanded noise analysis was initiated`�`for this pro— high. noise levels wire dotectet deet after unexpectedly SXyway during preliminary site Vist along the existing Noise sw6r0 conducted on two 'different days urveys l decibel (dB) in February and March 9.0 deterdetermine actin o, to establi,th the location of M and levels ang the ;7igWaj the 55 decibel cojAto fir, This is the line at which average dB. day/night equal 55 ht noise levels .L At to e- do contour is approximately 250 The 55 d1 Ldn ,t fromrthenexistingSBroadway to faQO tot from the Skywayected ieP nby 1990 if extend -- contour will shows current traffic patterns continue. The fol lowing 00, 'Ldn lihO for 1.983 and 1990 This the locatioh of the 55 dB indicates that noise levels Wille excessive for the existing; pattern many re s3.den,ts in the Mg.galia community if Skyway conticAues to handle total traffic ?volumes fox the area.. Diverting a large percentage of traffic to the new and future noise problems for route will eliminate existing Magalia residents, The 'new route will increase the distance receptors, and further between noise souroes and residential reduce noise levels due to its downslope location froth Magalia residences. I ., ,w...., „r.- -- ". N& ,,_�,. ,,.. .. �. s,.. •,� .....,. a. r,�.;.. ,. ,, �,. k� �"a�`- ., ...t. iCaS-� .�3.. ..�. cX iu. ':a � ',f{. t4. - .�i- ..,• ..3. � . t c. 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Rorge Counts Nate EKY uj Total Relative ivoit• iinetgy x %-% x 79, 400 50,100 = al� Tob10 94-% ^��.. x 31,600 a W-94 x ,.,y� 20,Ooo R' Q ., Q 90-92 x 12,600 a � ---------.� too 99 100,0W 79,4W 6Pq 7, 91G, . a 9d 63,100.67 M.88 x 5,010 _ R 97 30,100 Q6 3943 ...._. >e 3,100 -----.Y.- : % 95 09 000 31,600 65 64 31,6 251 82-8< --- x 2,000 R 94 25,109 63 20,0 80.82 x 1.260 • i 93 92 70,000 15,800 62 61 15,8 12.6 78-80 .�`. x 794 a 91 12,600 60 10.0 76-73 x S01 ., 90 69 10,000 7,940 39 58 7,94 6431 74-76x 72-74 X 316 200 a 88 6,310 5.010 57 3686 3,01 3.9e �. 70-7255 -1 x IA"b R87 • V, �, 85 3,960 3,160 54 3416 7:51 68-7054 , 7P.41...� Q + b3 2,510 2,006 53 52 2i 00 1.38 66-68 64-6681 ' -x 50.1 • 82 1,580 1,26056 51 1400 x 31.6 • @0 1,000 49 62«64 x 20.6 R 79 794 48 .794 ,631 60-624,W x 12.6 . } r 79 77 631 501 47 45 .501 4398 S&66 7.. 76° 39D 65 ,316 5.01 . � QUI 75 74 316 231 44 43 :251 r 5�-56 k 3.16 1 ?. 73 200 d2 .200 .158 52.54 _ 50-52 -`� ,x x -r r 2.09 ■ 1,26 ■ .• ---�.�b_.t v ._ 11'2 72 71 70 1;@ 123 100 41 #0 ,128 ,.`� 18-50 x .79446-0 R- .501 • —La 44-46 x 42»44 x .zoo • 1 �*-a2 .126 • 1 1 1 Sum D Lxi 1 Q d l ■ +V '111 Workthoq fpr p lull L; Cdlculatlon - q -dam -56 DATA 'SULT ±�'CUMMUN.I"Iry NOISIC EVALUA!t`IUN, . c.hNllkAi, . � FSU I PbtE s I'i'h' TyI►c� ..... _ Site cAtLf t., s_._ ... Ttntu '1'u Cal. t,ey 1! W Til 1' sy F41cru, l i ( 1 »..._..,......., I Wind Sl,ueci5., Iii r�^c:l inti► . M3.rro GL, Distance to Temp. Re t: flu .k -L � Sift slttirag ?cast.* slow Other WeatherjW%C�a4- A- otheer.SITE 8KETtH ------------ CELLANE CAIS MIS Traffic Count: AUtna 7 f1z.. TrU4ic8-�.7,'.: C1Lht3rA : Total., Comments pqji 0 Gude for Noises Above 70 d8 TIRANSPORTA` ION I ,,,,_,,,.,,,EMER., VEH p SHALL PIANS J,_,_ JET N k9um, ruji M NOTOACYCLE: W ,WA1I9RCMVT V OFF RD. VEll. MACH Ni'M C CONSTRUCTION Lr 1(1 I l; X-YAkb MAINT., I,rylw 1 p. F"1'OKY EQU1o. h-- HOWE:HOLDL~ IU I P 4 O'CHEN 0- L - L „_;,LOUD SREAI:l:`ks V N. Counts Relative Total Relative Noise B.00, Noa• Enxryy . x x 79,400 50, IOD ■ leqTaUtilex FSO�-82Jim 31,600n000 x' 12,800 .- 100 lo0'00o 69 7744 7,940 ■ 9974400 63,100 6s 4750.1 631 3,010 a97 30,100 3k1u0 r ; 95 39i 000 31,600 65 64 25,1 x 2,000 ■ 94 75,100 63 20.0 _ 93 92 ?0m O00 M, 800 62 at 13.9 17:6 794 1 ■ 91 12,600 60 10.0 76-78 x 301■ 90 69 10,000 7,940 59 58 7.94 6.31 74-76 / '' 316 48 6,310 57 5.01 7744 _ %- 7 61010 56 3A 7o-77 ;00 26 3, i60 55 0� ' 66-70' T9.1 . --3: .e._ (.r 7 t4 dal 93 '2,610 7,1100 $3 32 2,00 1.58 66-68 r� x 64,6M/ SO. ■92 81 1,340 1,26e S1 so 1.24 1. t _. >s 31.6 y` 90 1,000 19, co .791 62-64 x 20.0■ p 72 744 48 .631 60-67 `r: x 12.4 r �'t 7d' 6l 631 47 46 .301 .346 50.60 x 7.44 3" 45 13i6 56-58 x. 3.01 ■ d I / 74 2,41 .231 43 _-....2fJ0 r $4446 rJ .., x 3.16 • J_ 1_; 73 71 200 42 .13d 52-5< ax 50.57 x 7.60 1.26 . a t3 70 129 126 i10 40 10 . t o .100 46-48 +791 _ r it `jam' .sol # ..._ 44-'46' r�. % .316 _ 42.44 k .200 Sum 8 1 Z -W stxn D s 1 (� ■..�B yrs � I r Worksheet for' Manual L� Calculafioll .4_ -58- 10 20 30 40 50 6q d • - \ ,eft' ' 10 20 30 40 50 6q d � � s.i. �.'`. y v Yv ♦.w' . .;- � �" 1 v: .. . � �..:. w a k 4 ! :. �.ry yf, t t t e e by . 4 - Noise Assessment GuidEilines W "%M)HEET G - Roadwa;.j Noise - Page l L9 st all Major mads within 100U ft of ttye site 2. 4 ----........ __ _ ...;. NeCoSs a IrUb � V mation 1 'I iLstance in feet from the. NAL to Boad #1 the edge of the road a. _nearest larz� farthest lane=. • c....ave (effective disccN - tan »_ 2. Distance to stop s.a .n C� 3. Road grad er; in percent Mi� 4. Average speed in mph a. autorobiles b.:heavy trucks - uphill c heavy . trucks - downhill Go 5. 2y hour ave rage nuumber of automc- �� '_�, � --------- biles and ntdiurn trucks in both directtons (ADT) a. autoimbiles b. radium trucltis P* effective AIT (a + ( 10 x b)) ( •- �, _._.. _,, 6, A hour average number or heavy tTVCi�er a. uphill S b b,, downhi I I 0, total 7 Fraction of nighttime traffic ClO:l�q pian: to 7400 a.m. U 8i gya.,mc projected for- what Ammms FOR AurON oum rimmc - 1 ,l1 12` 13 ' 14 15 16 Stoop I . i arxv-PSpeed Av�erag+, + � time Auto AM Adjusted BW71er (Wor^kchart) Atter►-Partial. 4 Table 3 '..'able 4 '!'ttbl i 5 (line !ic) . Auto AUP DNi, � Road #1 x tIQ �- x ' Fbad #2 :X ��. qi X road #3 .r_ x x S . Road N4 x R x i AATImmM'S �uR HEAVX TRUCK r!`R11F'F'1^ i 11 18 rn Average 19 Truck 20 21 22 23 .�h 25 26 Niter k11usted 27 N to Graaieri�t Speed � and -go &o (WiNNL ri. farrier Partial 'Fable 6 Table 7 2 Table 8 Table 5 AM' chart 2) Attn. D% Uphill a r�' X 1117 ---- .." x-23 Add iL!(;, X Of ( w" LP'7 PERSONS AND ORGANIZATIONS CONTACTED Butte Countv Departmentof Public.Works Clay Castelberrry, Directox William Chef, Deputy Director Pat Patten, Engineer Butte County Sheriff is Department Lt. R,A. Qtky, Ares, Commander ButCounty 7ire,De artment - Arlen Cartwright Califo.",nia . Highway Patrol Sergeant A. Bowen Officer H. Cofftan Omni-means, Ltd H, Ross Ainsworth Vice President Paul. W, Soxaegue, Engineer Paradise Pines gobleoWners Association Meeting with approximately 20 local j+esidents ,and merchants, 21 April 1088, DOA Hall, PatRdise Pines, Calil6tnia, ECO-ANALYSTS PREPARATION STAF`F Albert. J. tocky Ph.D., Principal arid Senior Analyst Jeffrey G Harvey, M.A,, Environmental .Analyst Christine Sinnette, Environmental Analytt Cartographer Roger J. Lederer, Ph.D:, Consulting Ecologist Philip A. Lydon, Ph:D:, Consulting Geologist James P. Manning, Consulting Archaeologist Ki 9810y R Stern, Ph.n , Consulting Botanist „63 T . C K?�: t�,u i �j �d u� li �' '. u �� r �� �,��' M 4 � y t�'^ � �, n i J C � � 77 � �: �. j/. �� n � . � � A) ,+' j I.Z �..��.. � B '. CY .l .� f"�� � '' .r� � 4} LY t1, it .. �l ✓�� f/r Jny j1 \\� t. ��/ 1�� i'� '� ; � � �y41 � �, � = ( .� w.= �'� i u,�, ����� �r� �. I � y ,� y/ ,� �J/ Vi .rCf %1 � �, r.r �. ,. , ,. 1 u �� 1 i � h�,. .— _ . , ` ci � �, �, .- ��`� � 11, 1, s � ,� N � k , �` `\ - � � El -- 1.1, �_ .�. \'? i `' ,' i I� �� �� i al it ,�� I \\yyjj �, it 'i \; Vii' ,�,� .'�� � ., �� �;�- ��: �, ` i ,, �; ;,,.. t�.r.rJ it � `y � •: (� �� L � _ ..:. .... j�.�l a� � Vd n, e _ i �' i i'. _ .1:. ,AJC! -.. .. _. � �... _ .,.. .r�,i., 1 .. ,. 1 s MIA of 1VoxRs , co: Dept DetIax at3.en I'lann'a.ng aitd Oef�,ative 'FROM: �Iafk ltadabatlgh, -a, - 111itxa) Study ►dta Relocation Prof SUgJeGT- SkyW,.1 the Jude i and �ancltn'�.s �n DAYS' the discussion °. c.n,Gxal�y concur 111th two cos1unents lie fi' 110%ICVcx pie l ave ended uecumet• mitratcn ivo�vInb eComm 5oenic higAIWay ,should he e g the x that on Pad clew gnaoc to ensulc the high- as a in oclex xeclucaS n „tion Tozoning m. �—t-�� not occur that Ment ti�x� eno:xo eu ted �a ay' 5 e� xe s s 7 a? tltc est %ma ttt�atux d state descxtion siorul xe7.ocatinn. The . p r° � �p ac'ty` of the Sl:yt� ay x. des g 1�1R/ SAS I sb ,r i a ; In 'enter -Depart. , emoranduo: Bettye Kircher, Planning Dire ATM gnvironmentnl Review } tits, De•`artnient of Public Works x:389=C7 ` Skyway Project xv"o. 51261.82-1 , Y October 20, 1082 The limits of this project are from the Paradise Tow... Limits to Coutol,enc Road, We have two alternatives fo„ t:}iis project, depending on available funding. Alternate one would consist of widening the existing Skyway by grading, Adding aggregate base, end paving. Alternate two w6uld.consist of construct Ing two new lanes on the existing railroad grade from Wentz Road to CoutoJ.ene, Road. A location map is attaehedo :Jo,ltd t,r ;�, les gr rf.vr:.%'iv `these alt;^ —,et..lwis .:nc-I adv ,sty of what envilofullaentai ` lir sera: ty;7riox:s would be invol-�cdu Clair ,Castleberry Director of Public Works William Chef f' WC:dd Deputy Director Att. r, 14a GuEta C�, i�langrn� �atvrm. `" ;n 00T21u h p, j w �, � :` �� °�;� � �lrnvillai i✓nir�ern �t r inn GR t •y� V'�i�' i ' 4Y'6i ♦O � � 4 e .� s � PaLNF ' r•...rr 9. 1 e f'oioiiise w+ry °� li rr o YCrPerII ..� !R o. ri a � �9A ➢ �j p .• � . . � � t v � `fteserVOiP ,'': \;, �/i l IL f .u, >* _ : �fi�� ♦ 4e♦}�s .`fg. ,"a1NIIth1Yl a' .W4Y..!f '4 SCA c t• � ;y 4Geitw0000„ � � X : o � [� .orY� ,t6 �,. N . � cl i S .rm anaYFi++Y n a a Op � y{iW 'rpY' r �`� '!.�'♦rf Oi' PINI tOnC' � r � � pinL..�,!Y L[2P Wry LYS i;. r,•. � t..°.r .�,., �`, � x^�npraR°a�e•1aw��iLOt � �+ � �` 7 6flh RAtt OR% ''s`4 w v.►. N�� � 6944, h 047}1 Yi+b'GMANp kYC CA475b NClIY /1• 3i.S t �-:� �y,� :�•�� � °� Vit. �11�� �i �,t �� � �, i�ri �_ �',�,.. � r i tl{?' �i 4. Y �.p Rq�yti ft GaA. NC i� s' r a pt i•: Y�J t c , '� MiRdr�' yy4��R sC , Ir ,7� • � c ,i'+; !� , 7i r'a• V'i uV 4liw"4'4k. Reser vd;r K �t LN �� � 'M. � a t .r ♦' � tr , a' ,. � �+a"' °'f' t � `i1 n°�1� � . t, {` p'"',+«.....:k',,:�����,,� �dppaa P! � v � `v'P t �f4 LRri ♦y \ 1,�,A\ �j H,ix„ LN r i r ky e, te mfrwn, " !`K r r',r cw .' :fS SAWMILL OtAK � r a �, w iR 4 �. �� /� / i D °// 1 � Ar �tt• � r`,� ,eL • �"• � P r » it rr `�} � ? , t� �� kdr .1 ^ f� �',�%���1r, r' ('ri� �`y �' � '�• � � �ti !•. az�t ft � �' ,�.j �.4 � ,it r � Attp • r � �• I 4 aSRP 'a i'Ld 4r r.. ? :4 iL d,i rl �j.GA tiII Pr [ A�_. y, j.� , 6V,•Y4( ' Rt 4J Zi 'h'�M �, .5 � �' �.. ? °' Gln C'�z' ��'+�` ,• .. o d`" } � _ r+ /•� p r ry• ��� 31f v� Sl a _. A f 4 R G S 1 A 1 4�hC:nli Ri.\ ,. 4t/ ��, i4", ? 4 '1wCYgUrS4A tN A N * � O ! r �s�,W''�P�♦r�°'r" � r+:s�rO'L +�fL '+, .: ..... . �� 15.:. Yi' ; �'4 r s 6 ,tri y► t.; sar..sislawsa. MAS N �• ,,`: b1„mph LOCATION ........ 4 a 9q rry �� fu �.` L► a ,»,r\t+H p �pAtiAb1�E �t SKYWAY. \ �A (�1 l� T L 1 M YTS' a i E / �q OgOvtt,4F 11 'a 7 7144 .. TOhAWAiti•'»f 1 T✓ coUTC1LENC RQ. ' 61261 ,82.0 PROJECT Nq{