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<br /> 1.o INTRODUCTION
<br /> This report'presents the results of recent field, activities performed by Clearwater ,
<br /> Group;,Inc I (Clearwater) at the former Conrady service station ((;onrady)'located in
<br /> ' Stockton, California ;
<br /> The tasks performed during'this phase of work included the following
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<br /> • ` Drilled and logged two soil borings ,
<br /> • Installed two two-inch diameter monitoring wells, '
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<br /> • Develop'ed the newly installed' wells ,
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<br /> Collected groundwater samples for laboratory'analysis'
<br /> • I°Surveyed all monitoring wells
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<br /> The following report sections contain'a brief summary of
<br /> , site activities lo, date and a
<br /> 'detailed presentation of recent investigative efforts
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<br /> 1.1 Site Description and Background FI 'I '
<br /> The-site is I located at 1002 North Yosemite Street in Stockton,SCalifornia, (Figure,l) '
<br /> � 'rkecords. iindicate that the property, in question`'was fused ras; a gasoline,service statioh IFR,
<br /> from 1961, to 1978, and that the underground- 'fuelstorage,,tanks, (USTs) "w' e re' 'r
<br /> f removed in, 1980 ' Ari environmental' assessment'was conducted in 1990 b' ' Evax
<br /> Technologies, 'Inc by way,,of' a limited soil gas surveya in anticipation of future
<br /> ' property transaction The purpose of,this,investigation'was;to identify, any potential, ; ; '
<br /> subsurface contamination an, the vicinity of the three 'former underground'storage'.`;,F ;'
<br /> tank's 1 ' The rso11 gas , survey ' indicated' the possible presence , of petroleum''
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<br /> ,+hydrocarbons in,the'`�sod t I � � ,� � ' ' `� ' F � '' "
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<br /> Following' this ,'initialI 'dis'covery, ,GeAudit was.,
<br /> retainedi['to' initiate a ,more; E'E
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<br /> comprehensive subsurface investigation f'The investigation consisted, of drilling six's, ' ,
<br /> depths'
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<br /> soil,borings to,depths' from'between 29 5,and X36 5 feet below'ground 1 surface (bgs), I
<br /> with soil sainplesi'taken�every five,!feet' "Lab''analysis of soil samples collected ,during`
<br /> this phase of`the project,indicated the pies'ence of,low levels of ethylbenzene`in the I"'` ' 'I + '
<br /> „ soil around the western edge of the property ' Subsequently,1 San Joaquin,County
<br /> " +Public Health 'Services Environmental Health Division (PHS/EHD) Airected the '
<br /> ' ro er owner to install monitorin wells and to be nuarterl��� sampling I i " IF
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