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• 8 November 1995 <br /> AGE NC Project No 95-0130 <br /> Page 5 of 7 <br /> 4.0. PROCEDURES <br /> 4 1 DRILLING AND SAMPLING <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 woi k, while securing proper <br /> city/county soil boring permits <br /> 2 Prepare a Site Health and Safety Pian in accordance with the Occupational Safety and Health <br /> Guidance Manual for Hazardous Waste Site Activities - Prepared by National Institute for <br /> Occupational Safety and Health, Occupational Safety and Health Administration, U S Coast <br /> Guard and U S Environmental Protection Agency, October 1985 <br /> 3 Boring locations will be marked at least 48 hours in advance for an Underground Service <br /> Alert (USA) check of underground utilities or pipes <br /> 4 Advance five (5) soil borings, using a truck-mounted drill rig, and 8 25-inch or 10-inch <br />. diameter hollow stem augers to depths of approximately 65 (vapor wells) and 80 feet <br /> (monitoring wells) bsg Bonng/well locations are depicted on Figure 2 <br /> 5 Decontarmnate all sampling equipment in an alconox solution and rinse twice with water prior <br /> to each sampling run Steam-clean auger flights before advancement of each boring <br /> 6 Sample each boring, beginning at 10 feet bsg, utilizing a California split-spoon sampler and <br /> pre-cleaned 2-inch by 6-inch brass sleeves <br /> 7 Preserve soil in the brass sleeve by covering both ends with aluminum sheets or teflon tape, <br /> capping, and sealing with tape <br /> 8 Store the samples under ice and transport the samples to a chilled ice chest to a State-certified <br /> laboratory for analysis <br /> 9 Screen soil sample duplicates for the presence of volatile organics using a photo-ionization <br /> detector(PID) pre-calibrated to isobutylene <br /> 10 Log sot] boring in accordance with the Umfted Soil Classification System (USCS) <br /> 11 Cuttings and rinseate generated during drilling activities will be containerized to properly <br /> labeled D O T model 17H 55-gallon drums, and stored on-site to an area inaccessible to the <br /> general public Disposal alternatives will be evaluated based on results of laboratory analyses <br /> 12 Transmit selected soil samples to a State-certified laboratory for analysts Samples will be <br />. analyzed for TPH-g and BTE&X in accordance with EPA methods 5030/8015 and 8020, <br /> respectively <br />