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<br /> The Customer'`Compr y
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<br /> CA 9451W,)&;
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<br /> - - Siliject: .,�� Gro Sampluig Report ad'Quarter, for Cheaper #-74 $901- 7'
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<br /> North Maid► Street, Manteca, California ,,.'_ tr=• ". -: =� .,rt"# '_�,J'�"=` ' +` ;%tib
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<br /> Dear Mr. Johnson►: _- . ° ,s �,
<br /> ` ;412`Y"
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<br /> This report describes the field ink#hods used�to obtai�t groundwater;5nples and#he.f
<br /> laboratory analysis'result's for,the,sampfes from-the subjec_t,site,>V "' t' z{ �'Y'`
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<br /> L SITE !HISTO)tY; _ F,4,el t c� y;� a,^ ��"� a "^ e � L, „`y '. � #�Yt Y ,S.o•r'�`•' +3,. `�s. _ "yi ° `-
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<br /> Two underground gasoline storage tanks were removed from the subject property °x�� JV
<br /> to February, 1987.,Soil samples collected during the tank removal-showed detectable
<br /> amounts of TPH-g and 713TEX.On March-$, 1987, Klee elder consultants reported-"-
<br /> that three monitoring wells (MW-1 through MW-3) were'inwtalled'on March 2,
<br /> 1987, south, north and northwest, respectively, of the former.underground'storage
<br /> tank location The wells-were developed_and sampled March 3, 1987.'Groundwater,_:r 1,.
<br /> was encountered"at 13 feet below ground surface,-All groundwater 'samples i'4 ere
<br /> r �y `
<br /> } analyzed for total petroleum hydrocarbons'as gasoline,(TPFJLg) and'benzene ,. '_
<br /> toluene ethyl benzene`and xylenes� �� 1�swalesw-ere'`h
<br /> tee�c�t except-for,
<br /> benzene, detected at 3.5 parts'per billion f(ppb) in-MW-1"and-13yppb'��n'�MW-3.
<br /> On November 13, 1987,)Cendelder requested'to dispose ofpurgeand sample water,
<br /> collected from the wells. The purge and sample'-water collected Aprtl 28, 1987' wearer`_`
<br /> non detect. On June 21, 1988, a Klemfelder report document4,tliat groundwater_
<br /> samples collected May 27, 1988 were non detect. The depth to groundwater was 2-0
<br /> feet below ground-surface.'
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<br /> In a November 12, 990 report, Dames and Moore_documented that grouse water
<br /> samples were collected on October 24, 1990.All4samples were non-d6 tect`is?epth to'-- `g'!_r'; '
<br /> 4 _
<br /> groundwater was 25.3 feet below ground surface.
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<br /> 190 East 7th 960e_Ts,Pittsburg, CAS4565-23i7 - FAX O);439- S lyPhai e (51.0)439,1024
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