ARCHIVED REPORTS_XR0013046 - Laserfiche WebLink

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AT`T'ACHMENT B FIELD AND LABORATORY PROCEDURES ChLvion 9-3212, 8660 Lower Saciamenlo Road, StOLkton, CA Health and Safety Prior to performing field work at the site, SECOR prepared a Site-Specific Health and Safety Plan 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) The Site-Specific Health and Safety Plan was reviewed by field staff and contractors before beginning field operations at the site CPT Borings and Groundwater Sampling The CPT soil bonngs were advanced using a direct push cone penetrometer testing (CPT) ng to log soil stratigraphy Immediately adjacent to each CPT borehole, a second direct-push borehole was advanced to collect discrete groundwater samples Groundwater samples were collected using a hydropunch, or s€rrular technology, by lowering a stainless steel or Teflon bailer into accumulated groundwater in the borehole, then retrieving and transferring the water into laboratory supplied containers The groundwater sample containers were placed on ice for transport to the laboratory accompanied by chain-of-custody documentation. Down-hole boring and sampling equipment was steam-cleaned prior to and following the completion of each soil boring Down-hole sampling equipment was washed in a tri-sodium phosphate or AlconoxTM solution between samples Laboratory Procedures Groundwater samples collected were analyzed for the presence of total petroleum hydrocarbons quantified as gasoline (TPHg) by EPA Method 8015, benzene, toluene ethylbenzene, xylenes (BTEX), and the fuel oxygenates methyl tertiary butyl ether (MtBE), ethyl tertiary butyl ether (EtBE), di-isopropyl ether (DIPE), tertiary amyl methyl ether (TAME), tertiary butanol (TBA), ethylene dibromide (EDB), 1-2 dichloroethane (1-2 DCA), methanol, and ethanol by EPA Method 8260B Soil Cuttings and Rinsate Water No soil cuttings or nnsate water was generated during drilling activities at the site Exploratory Drilling The soil borings will be drilled using an 8-inch hollow-stem auger drilling equipment The shallow bonngs will be advanced to approximately 50 feet bgs, and the deep borings will be advanced to a depth of no more than 70 feet bgs The bonngs will be logged by a SECOR ,10 representative using the Unified Soil Classification System and standard geologic techniques