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ATTACHMENT A <br /> FIELD AND LABORATORY PROCEDURES <br /> Soil Boring Installations <br /> The soil borings were drilled using 8-inch hollow-stem auger drilling equipment and logged by <br /> a Pacific Environmental Group, Inc geologist using the Unified Soil Classification System and <br /> standard geologic techniques Soil samples for logging were collected at 5-foot depth <br /> intervals using a California-modified split-spoon sampler The California sampler was driven a <br /> maximum of 18 inches using a 140-pound hammer with a 30-inch drop Soil samples for <br /> chemical analysis were retained in brass liners, capped with Teflon® squares and plastic end <br /> caps, and sealed in clean zip-lock bags <br /> Due to limited access, the smaller diameter soil borings were advanced using 1-112-inch <br /> diameter hollow-stem rods fitted with metal liners for soil core sample recovery The borings <br /> were logged by a Pacific Environmental Group, Inc (PACIFIC) geologist using the Unified <br /> Soil Classification System and standard geologic techniques Soil samples for logging and <br /> laboratory analysis were collected at five foot intervals by advancing the hollow-stem rods <br /> into undisturbed soil The sampler was driven a maximum of 1 feet using a pneumatic <br /> hammer and hydraulic pressure Soil samples for chernical analysis were retained in liners, <br /> capped with Teflon and plastic end caps and sealed in zip-lock plastic bags <br /> Soil samples were analyzed in the field for volatile organic compounds (VOCs) using a <br /> photo-ionization detector (PID) by a PACIFIC Geologist Results of the PID tests were used <br /> to assist in selection of samples for laboratory analysis The samples were placed on ice for <br /> transport to the laboratory accompanied by chain-of-custody documentation All down-hole <br /> drilling and sampling equipment was steam-cleaned following the completion of the soil <br /> borings Down-hole sampling equipment was washed in a tn-sodium phosphate solution <br /> between samples The temperature of the cooler was recorded upon delivery to the labora- <br /> tory <br /> The boring logs are included in this attachment <br /> 3201351A/RF-PORT A - 1 January 10, 1996 <br />