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6 November 1995 <br /> AGE-NC Project No. 95-0120 <br /> Page 2 of 5 <br /> Soils will be described using the Unified Soil Classification System(USCS). Soil sample descriptions <br /> and PID screening results would be summarized on boring logs prepared for the final report. <br /> 3.2. EQUIPMENT DECONTAMINATION <br /> All sampling tools and brass sleeves used for sample collection will be thoroughly rinsed with clean <br /> water after washing with a solution of Alconox. All hollow stem augers are steam-cleaned prior to <br /> advancement in each borehole. <br /> 3.3. LABORATORY ANALYSIS <br /> Selected soil samples will be analyzed for total petroleum hydrocarbons quantified as gasoline and <br /> diesel (TPH-g and'TPH-d) and volatile aromatics (benzene, toluene, ethylbenzene, and xylenes: <br /> BTE&X)in accordance with EPA methods 8015, 8015M and 8020, respectively. Selected samples <br /> will also be transmitted to .a microbiological laboratory for physicochemical analysis and <br /> microbiological enumeration to determine existing bacteria populations. <br /> 3.4. SOIL VAPOR EXTRACTION PILOT TEST <br /> Upon completion of drilling and sampling, a soil vapor extraction(SVE) pilot test will be performed <br /> in order to determine remedial feasibility. An internal combustion(IC) driven engine will be used to <br /> apply a vacuum on one of the SVE wells while the flow on the other well is measured. The duration <br /> of the SVE pilot test will be approximately 8-hours. Soil vapor samples will be collected in Tedlar <br /> bags and analyzed for TPH-g and BTE&X at a laboratory. Results of the SVE pilot test will be <br /> included in a CAP. <br /> 4.0. PROCEDURES <br /> 4.1. COLLECTION OF SOIL SAMPLES <br /> For the collection of soil samples, the following procedures will be performed: <br /> 1. Notify the San Joaquin County Environmental Public Health Services -Environmental Health <br /> Division(PHS/EHD) 48 hours prior to commencement of any work, while securing proper <br /> city/county soil boring permits. <br />