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<br /> 28 A prrl-1997.
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<br /> E- Project.No. 96-g232a , h
<br /> Page 3.of 9.
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<br /> feet lis. ^in this area: Laborato anal' sis of the'soil sam les did riof detect etraleun
<br /> I, . hydrocarbons_ Analytical results'are surnmanzed in Table 1
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<br /> I 2 4. 'STOCKPILED-SOIL
<br /> 41.
<br /> r A total of approximateIyy1,Q00°cubic yards`of soil-had been excavated from.therformerUST area and
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<br /> j , :' stockpiled,ori-site: Soil samples were'collected�from the stockpiled soil for'1_aboratory analysis to t
<br /> deteirmine disposal alternatives Analytical'resulfs-aie summarized in Table 3-:4ralylical.Results`gf
<br /> .SYoc led Soil Sam .
<br /> lqs,,Siock led.s6il was trans pofte ,to Forward; nc, a C censed waste
<br /> kpi' p pi. p alifornia li
<br /> disposal fac�laty. ' {`
<br /> 'Furthermore, approximately ,250 ;cubic yards of soil had been excavated from the former ,
<br /> ' dispenser/product lane area-and stockpiled on-site. Soil'samples-were collected and analyzed'from the
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<br /> stockpiled' soil to, determine, disposal alternatives Analytical results-;are summarized ilii Table' 3'
<br /> Stockpiled`soi was transported.to Forward, inc.
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<br /> 2 5. WELL SURVEY
<br /> It is our ;understanding from: discussions '
<br /> ' oris with=PHS-EHD 'that one domestic..well�is located _ •�� ''"
<br /> approximately 100'feet north of the site. A'%a-mile radia"s drive by of surrounding sites did not reveal
<br /> any,irrigation,'domestic or,monitoring wells` -
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<br /> A ,
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<br /> t Dep1artmenof t ter Resources (DWR} V,Vater.Well Drillers',Repoits were revieN�ecl
<br /> '6h;-14 January
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<br /> 1,997 by AGE. No records of irrigation;.domesttc'or,inonitoririg wells located within a.2;000-f66t • I;i
<br /> r, : radius of the.subject site were found: However, copies of wellieports were,located in DWR'files;tliat
<br /> I ' IN
<br /> were in the same township section�and'range as'the subject site YCopies of'tliese reports''am included
<br /> I Y -ISI
<br /> with Appendix A:
<br /> I '' 4 .; s I , + n ,,' r r •r I 5 r ,: t. , Iy V Uil�Ir'jl:
<br /> 47
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<br /> 2 6.
<br /> r ; REGIONAL'•;GEOLOGIC SETTING�I 'r
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<br /> The 'subject:srte'ris'°l6cated ii the eastern`portion of the Great;Valley,geonaorphic 'provirice;,of , I'
<br /> California ` The.,valley'is a nearly flat;^ elongate trough trending'nfli thwest;,.and. southeast-for
<br />' approximately"450 miles-The v'Aeyis enclosedrby the'igneous Sierra Nevad'a`on'tlie cast and,.the f w;
<br /> sediinenfary and metarrioiphic�Coast''Ranges on the west:'The•'surficial and upper"severalrhundred feet
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<br /> = o£subsurfaceilayers consist o£a great tliicknes's?`of pr'eclorninantly unconsolidated'alluvial andfflood'-
<br /> plain.deposits (dbmiriantly,sand,• silt, and 'clay) of Quaternary age, which were derived,'from the
<br /> predomiriaritl an tic'mountain5 of the Sieria•Nevada":Beneath"the upper.sedimenta 'ddeposits lies:'
<br /> a thick sequence of in deposits.of Mesozoic age. These units are in`turn underlain,by a pre-
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