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I <br /> ATTACHMENT B <br /> FIELD AND LABORATORY PROCEDURES <br /> Chevron 9-3232, 8660 Lower Sacramento Road, Stockton, CA <br /> Health and Safety <br /> Prior to performing field work at the site, SECOR will prepare a Site-Specific Health and <br /> Safety Plan required by the Occupational Health and Safety Administration (OSHA) <br /> Standard "Hazardous Waste Operations and Emergency Response" guidelines (29 CFR <br /> 1910. 120) and by California Occupational Health and Safety Administration (Cal-OSHA) <br /> "Hazardous Waste Operations and Emergency Response" guidelines (CCR Title 8 , Section <br /> 5192). The Site-Specific Health and Safety Plan will be reviewed by field staff and <br /> contractors before beginning field operations at the site. <br /> CPT Borings and Groundwater Sampling <br /> The CPT soil borings will be advanced using a direct push cone penetrometer testing (CPT) <br /> rig to log soil stratigraphy. Immediately adjacent to each CPT borehole, a second direct-push <br /> borehole will be advanced to collect discrete groundwater samples . Groundwater samples <br /> will be collected using a hydropunch, or similar technology, by lowering a stainless steel or <br /> Teflon bailer into accumulated groundwater in the borehole, then retrieving and transferring <br /> the water into laboratory supplied containers. The groundwater sample containers will be <br /> placed on ice for transport to the laboratory accompanied by chain-of-custody <br /> documentation. Down-hole boring and sampling equipment will be steam-cleaned prior to <br /> and following the completion of each soil boring. Down-hole sampling equipment will be <br /> washed in a tri-sodium phosphate or AlconoxTM solution between samples. <br /> Laboratory Procedures <br /> Groundwater samples collected will be analyzed for the presence of total petroleum <br /> hydrocarbons quantiifig as diesel (TPHd) and total petroleum hydrocarbons quantified as <br /> gasoline (TPHg) by EPA Method 8015 , benzene, toluene ethylbenzene, xylenes (BTEX), and <br /> the fuel oxygenates methyl tertiary butyl ether (MtBE), ethyl tertiary butyl ether (EtBE), di- <br /> isopropyl ether (RIPE), tertiary amyl methyl ether (TAME), tertiary butanol (TBA), ethylene <br /> dibromide (EDB), 1 -2 dichloroethane ( 1 -2 DCA), methanol, and ethanol by EPA Method <br /> 826013 . <br />