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�i <br />ATTACHMENT E <br />FIELD AND LABORATORY PROCEDURES <br />Site -Specific Health and Safety Plan <br />As required by the Occupational Health and Safety Administration (OSHA) Standard <br />"Hazardous Waste Operations and Emergency Response" guidelines (29 CFR 1910.120), and <br />by California Occupational Health and Safety Administration (Cal -OSHA) "Hazardous <br />Waste Operations and Emergency Response" guidelines (CCR Title 8, Section 5192), <br />SECOR will prepare a Site -Specific Health and Safety Plan prior to the commencement of <br />fieldwork. The Site -Specific Health and Safety Plan will be reviewed by the field staff and <br />contractors before beginning field operations at the site. <br />Exploratory Drilling and Soil Sampling <br />Is The soil borings for the installation of oxygen diffusion/iso-gen wells, will be drilled to <br />approximately 100 feet bgs. The soil borings for the installation of B -zone monitoring wells <br />will be drilled to depths of approximately 90 to 100 feet bgs. The soil borings for the <br />installation of A -zone monitoring wells will be drilled to depths of approximately 65 feet <br />bgs. The soil borings for the installation of C -zone monitoring wells will be drilled to depths <br />of approximately 140 feet bgs. The soil boring for the installation of a groundwater <br />extraction well will be drilled to a depth of approximately 80 feet bgs. Boring EX -3 will be <br />drilled using 12 -inch air rotary drilling equipment. The other proposed borings will be <br />drilled using either hollow -stem auger drilling equipment. The borings will be logged by a <br />SECOR representative using the Unified Soil Classification System and standard geologic <br />techniques. Soil samples for logging in all monitoring wells (all proposed wells except <br />EX -3) will be collected continuously using a core tube sampler from 50 feet bgs to the total <br />completed depth of the borings. Only selected soil samples will be collected above 50 feet <br />bgs. All soil samples for chemical analysis will be retained in brass liners, capped with <br />Teflon squares and plastic end caps, and sealed in clean zip -lock bags. The samples will be <br />placed on ice for transport to the laboratory accompanied by chain -of -custody <br />documentation. All down -hole drilling and sampling equipment will be steam -cleaned prior <br />to the drilling of each soil boring. Down -hole sampling equipment will be washed in a tri - <br />sodium phosphate or alconox solution prior to each sample collection. <br />• <br />9-5775WP100900.doc October 10, 2000 <br />