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43 Permitting <br /> SECOR will acquire the necessary permits for drilling and installing wells from the San Joaquin Public <br /> Health Services (SJPHS) All dnllmg and well installation will be performed by a drilling company with <br /> the appropriate license for drilling in the State of California and approved in San Joaquin County In <br /> addition, off-site access agreements and/or encroachment permits will be obtained as necessary <br /> 44 Soil Boring and Groundwater Monitor Well Installation <br /> The proposed soil borings will be drilled at the locations shown on Figure 2 utilizing a hollow-stem <br /> auger truck-mounted dell ng Each boring will be advanced to approximately 100 feet bgs Soil <br /> samples will be collected every 5 feet or at obvious changes in lithology using a split spoon sampler <br /> A portion of each soil sample will be sealed in a ziplock plastic bag, placed out of direct sunlight, and <br /> allowed ample time for volatilization After the air in the headspace and soil have equilibrated, the <br /> samples will be screened in the field for the presence of organic vapors using a photoionization detector <br /> (PID) Soil samples will be collected from the sampler in brass tubes and sealed with teflon tape, <br /> plastic caps and tape The soil samples will be labeled with the appropriate borehole information, time <br /> and date of collection, and placed in cooled storage for subsequent transport and analysis at a State of <br /> California certified analytical laboratory Cham-of-custody procedures will be followed at all times <br /> Selected soil samples (approximately 3 soil samples per boring) will be analyzed using U S <br /> Environmental Protection Agency (EPA) Methods 8015/8020 for TPHg and BTEX During drilling <br /> all soil samples and drill cuttings will be logged by a SECOR geologist utilizing the Unified Soil <br /> Classification System In addition, all soil samples and drill cuttings will be screened utilizing a PID <br /> or equivalent device to evaluate for the presence of petroleum hydrocarbons These readings and any <br /> subjective evidence of petroleum hydrocarbons will be recorded on the boring logs <br /> The groundwater monitor wells will be constructed of 2-inch diameter, 0 020-mch machine slotted, <br /> Schedule 40 polyvinylchloride(PVC)well screen, installed from the bottom of the borehole to at least <br /> five feet above the estimated potentiometric surface Two-inch diameter blank PVC casing will <br /> complete the well from the top of the screened interval to within 112-foot of surface grade A gravel <br /> pack consisting of#3 Monterey sand will be placed in the annular space from the bottom of the boring <br /> I a373L<KXWPL . <br /> 5 L <br /> *WW3001 01 hwr�1 19% <br />