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Pig <br /> INTL ;'J.R�-;W iExrM97ei-=0 <br /> 1— M <br /> 'wi R"Mc 11!1: <br /> Fam�a <br /> Ms.Laurie Cotulla <br /> August 8, 1988 <br /> Page 2 1) <br /> Table 2. Groundwater Sample Analysis F <br /> ERfij� <br /> EPA 8015 modifleda EPA 8020b <br /> Sample Total petroleum Total <br /> Date number hydrocarbons Benzene Toluene Xylene leada <br /> 4-27-87 AL-1 <1.0 <0.5 <0.5 <0.5 <br /> AL-2 <1.0 <0.5 <0.5 <0.5 <br /> AL-4 <1.0 <0.5 <0.5 <0.51) <br /> 12-28-88 AL-1 N/A <0.5 <0.5 <0.5 NIA <br /> AL-2 NIA <0.5 <0.5 <0.5 N/A <br /> AL-4 N/A <0.5 <0.5 <0.5 NIA <br /> 7-8-88 AL-140N/A <br /> ,5 <0.5 <0.5 <br /> k AL-2 NIA <0.5 <0.5 <0.5 N/A <br /> R AL-4 N/A <0.5 <0.5 <0.5 NIA mGL <br /> 5 <br /> pk aConcen rted in mi1ligrams per liter(parts per million). <br /> trations repo <br /> b <br /> Concentrations reported in micrograms per liter(parts per billion). <br /> N/A.-This compound not analyzed- <br /> Brown and Caldwell recommends that the ,Sin Joaquin Health District remove this station <br /> V from its list of environmentally impact6d sites. Additionally, Brown and Caldwell <br /> recommends that the three groundwater monitoring wells that were installed for this <br /> investigation be considered inactive. These wells will provide ARCO with an immediate <br /> means to monitor groundwater quality should a future unauthorized release occur. <br /> Should you have any questions regarding the subject site, please call me or Mr. Pat Cullen <br /> at(916)4440123. <br /> Very truly yours, <br /> BROWN AND CALDWELL <br /> T - ----- <br /> R <br /> Phillips <br /> Proj ct anger. <br /> LEP:PGC: Y, <br /> Enclosure <br /> cc/enc: Mr.Kyle Christie,ARCO Products Company,San Mateo <br /> Mr.Pat Cullen,Brown and Caldwell,Sacramento <br /> Mr.Chris Winsor,ARCO Products Company,Los Angeles <br /> BROWN ASID CALDWELL <br /> WREET SACRAMENTO,CA 95811•f918)111-0123 <br />