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11/13/00 MON 13:46 FAX 1 916 861 0430 SECOR-SACRAMENTO BOOB ATTACHMENT A FIELD AND LABORATORY PROCEDURES Health and Safety As required by the Occupational Health and Safety Administration (OSHA) Standard "Hazardous Waste Operations and Emergency Response" guidelines(29 CFR 1910.120) and by California Occupational Health and Safety Administration (Cal-OSHA) "Hazardous Waste Operations and Emergency Response" guidelines (CCR Title S, Section 5192), SECOR will prepare a Site-Specific Health and Safety Plan prior to the commencement of fieldwork. The Site-Specific Health and Sarety Plan will be reviewed our field staff before beginning field operations at the site. Exploratory Drilling A total of four(4) soil borin,s will be drilled on the site. If groundwater is encountered in the soil borings, a groundwater "grab" sample will be collected. Groundwater is expected to occur in the site vicinity at a depth of 15 to 25 feet hgs. Borings will be drilled using hollow- stem auger drilling equipment and will be logged by Korbmacher Engineering. Soil samples for logging will be collected at 5-foot depth intervals using a split-spoon sampler. The sampler will be driven a maximum of IS inches using a 140-pound hammer with a 30-inch drop. All soil samples for chemical analysis will be retained in brass liners, capped with Tetlon squares and plastic end caps, and sealed in clean zip-lock bags. The samples will be placed on ice for transport to the laboratory accompanied by chain-of-custody documentation. Down- hole sampling equipment will be washed in a tri-sodium phosphate or alconox Solution between samples. Organic Vapor Procedures Soil samples collected at 5-foot depth intervals during drilling will be analyzed in the field for ionizable organic compounds using a flame-ionization detector (FID) or a photo-ionization detector(PID) with a 10.2 eV lamp. The test procedure will involve measuring approximately 30 grams from an undisturbed soil sample, placing this subsample in a Ziploc type bag or in a cleats glass jar and sealing the jar with aluminum foil secured under a ring-type threaded lid.