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W= P. 03 <br /> P�"t7�egt. Api??�'S��ch <br /> All required permits are submitted and subsurface utilities <br /> identified before lnit,i.atirag the € eld program. RCA and Aegis <br /> propose to install. 4 to fi soil borings to a depth of about 20 feet <br /> to determine the horizontal and Vertical extent of potential <br /> contamination in zoil.s in the area f the reieasc. Soi la will bo <br /> savpled at 5-foot intervals ana screened in the field using a <br /> photoionization detector .(PID) . selected soll samples Will be ' <br /> prepared for chemical analyses and all samples will be described <br /> for lithologic interpretation. Samples will be analyzed for total <br /> petroleum hydrocarbon as gasoline (TPHg) and benzene, toluene, <br /> ethyl benzene, and xylenes (UTEX's) sing modified EPA method 8015 <br /> and 8020 as specified in the California LUrT Manual. A report <br /> containing a detailed description of the field program and <br /> analytical laboratory results will be submitted to San Joaquin <br /> County. Xf the vertical extent of soils cannot be delineated by <br /> the proposed soil care sampling program, a groundwater quality <br /> sampling program will be proposed in the report to Sats Joaquin <br /> County. <br /> `�' c nil- ooSS - 5 iSampling <br /> Soil core saftpli,ng is conducted. using 5-foot sections of <br /> decontaminated 3/4-inch x,D. galea ized steel probe pipe. The <br /> probe pipe is connected to a 1-f t galvanized steel soil core <br /> tube. Stainless steel deoontamin ted insert rods are placed <br /> through the probe pipe and sarnpl.in core. mho probe pipe, soil <br /> cors and insert rods are pneumatically or hydraulically driven to <br /> the depth the soil sample ie desired. The insert rods are removed <br /> and the probe pipe and core is driven 1-foot to obtain the soil <br /> care sample. The probe pipe containing soil core sample is renoved <br /> from the hole and the soil sample i -disconnected from the probe <br /> pipe. The ends of the gore are Baled using teflon tape and <br /> plastic end caps. The sample is Ib, <br /> led with the project name, <br /> date and time of sample, designate sample location, and other <br /> information desired by Aegis. The s mole is placed in a air tight <br /> baggie and stored in an iced cooler or presented to Aegis. After <br /> sampling$ the probe pipes are remove and the hole is grouted using <br /> Portland cement. <br /> EGA antiAegis will coordinate all required activities with San <br /> Joaquin County. ECA has cvnd oted successful subsurface . <br /> environmental sampling activities i Manteca. previously. ECA is <br /> fully insured with general, pollution, and professional liability <br /> policies and Workers compensation lacy. FCA has conducted many <br /> sampling programs around California which satisfy County and i <br /> Regional Water Quality Control Board requirements. SCA, Aegis, and <br /> Pontes request San Joaquin approve this proposed field � <br /> investigation program. if you have questioar. or desire additional <br /> information, please contact us. <br /> r <br /> VES t X11 Y 0, <br /> Timothy - <br /> �Ory I l�TxRONNORAL CCMH= ASS TATE <br />