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_ •+4.v "i-"i°,t..'7r- - ga <br /> - �'� �'2n"z".3.F' e i <br /> a" <br /> r <br /> FIEPORr <br /> PHASE I s6sWRFACE 1N11ESSl <br /> LBOs swan EI WOO.SIocM°M <br /> a �► +IUT»ODU -1 HN <br /> service station located at <br /> report documen#s the results of the limited tsubsurface jnvestigation conducted on <br /> ThisX991, at the Exxon Company, This report is based, <br /> July 2 and 3, xxon and is <br /> IA 1605 South El Dorado Street, in Stockton, <br /> CaliforniaCalrfornia (Figure 1). <br /> a on information provided to Aegis Environmental, Inc�vaAagts), by <br /> part, <br /> subject to modification as now <br /> acquired information may <br /> s <br /> jllr 05e of this investigation was to. 1C conditions <br /> 1 <br /> The <br /> p <br /> Further characterize the shallow subsurface and hydrogeolog' <br /> at the site; and <br /> Determine <br /> the extent of petroleum hydrocarbons potentially within soils and <br /> groundwater beneath the site. <br /> i.2 c <br /> kscope of work performed is summarized below,in A pendix A accordance <br /> The completed procedures (SOP) include p <br /> �i ,�� ` with Aegis' standard operating p th of <br /> ul 2 and 3, 1991, three soil borings were drilled <br /> on site to a dep <br /> On J y , <br /> 55.feet below surface. inning ; <br /> Soil samples were collected at 5-foot intervals from each boring, beg' <br /> ( " p ed and classified according <br /> at 5 feet below surface. Soil samples were logged <br /> to the Unified Soil Classification System. <br /> The collected sol! samples were screened for the presence of organic jY <br /> Thwith a portable photaionization detector (PID). The highest reading ; <br /> vapors The soil samples <br /> from each ! was recorded on the soil boring logs. <br /> i' <br /> selected for laboratory an <br /> werealyses based on the PID readings, <br /> / ths: <br /> descriptions, and dep roundwater <br /> The borings were, comp <br /> leted as three 4-inch-diameter g <br /> 4 wells: The wells were grouted (sealed}under the supervision of E <br /> monitoring <br /> a San Joaquin County Public Health Service/Environmental Health Division <br /> (SJCPHS/EHD) representative. <br /> presence of organic vapors with a <br /> n at <br /> - The drill-cuttings were screened for the p covered lactic <br /> la" T - The drill cuttings ware Stockpiled anfrom�the dstockpife b op�soll - <br /> 1' Samples were collected <br /> .A sheeting. <br /> characterization and disposal purposes.• <br /> f 91-044%.FPf. . <br /> 1 <br /> tal <br />