ARCHIVED REPORTS XR0000311 - Laserfiche WebLink

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ATTACHMENT B 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 8, Section 5192), SECOR will prepare a Site-Specific Health and Safety Plan prior to the commencement of fieldwork The Site-Specific Health and Safety Plan will be reviewed by the field staff and contractors before beginning field operations at the site Direct Push Borings The soil bonngs will be driven using a 3 5-inch drive casing with a 1 38-inch internal sampling rod Discrete groundwater samples will be collected in selected intervals based on stratigraphy and pore water pressure inferred from physical data using a Hydropunch with four feet of mesh screen The samples will be placed on ice for transport to the laboratory accompanied by chain-of-custody documentation All down-hole drilling and sampling equipment will be steam-cleaned prior to and following the completion of the soil boring Down-hole sampling equipment will be washed in a tri-sodium phosphate or alconox solution between samples Exploratory Drilling The sentry well soil boring will be drilled using an 8-inch hollow-stem auger drilling equip- ment, and the groundwater extraction well soil borings will be drilled using a 10-inch hollow-stern auger drilling equipment The sentry well will be completed to approximately 90 feet bgs, and the extraction wells will be completed to approximately 30 feet bgs The borings will be logged by a SECOR representative using the Unified Soil Classification System and standard geologic techniques Soil samples for logging will be collected at 5- foot depth intervals using a California-modified split-spoon sampler The sampler will be