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%W 1./ Wright Environmental Services, Inc. 5. The remaining soil sample will be extruded from the other rings in the field and lithologically logged using the USCS and collecting field evidence of contaminants and geologic information. Sampler shoe cuttings logging, blow counts, drill rig response and bit penetration rate and sample recovery may also be logged. A lithology exploratory boring log will be made of the materials encountered and sample depth for each boring. The log will include field descriptions of the soil lithologic variations, moisture conditions, geologic data, and any unusual characteristics which may indicate the presence of chemical contamination. Where soil samples are collected from excavations, the USCS soil classification system will be used to classify the soil sample. Contaminated drill cuttings and the soils samples not retained for chemical analysis will be placed in 55 - gallon drums or on plastic sheets and covered pending chemical analysis and proper off-site disposal as needed. Fluids produced during drilling will be drummed to minimize surface contamination. Ultimate proper storage and disposal of contaminated materials is the responsibility of the Client or site owner. Reconnaissance Soil Sampling Procedures 1. Soil sampling tools (split spoons, cores, etc.) will be disassembled, steam -cleaned or cleaned in soapy (TSP) water, rinsed with clean tap water and finally rinsed with or distilled water, and air-dried prior to taking each sample. The cleaned tools will then be reassembled with similarly cleaned, dry brass sample liners and carefully lowered into the hollow stem augers for the collection of the next sample. The drill rig will be decontaminated as needed and at the discretion of the logging geologist. 2. When sampling stockpile soils or during soil excavations, the soil sample will be collected by the following procedure; a clean brass liner will be pushed into the stockpile or excavation sidewall, or soil in the excavator bucket. About two inches of soil will be brushed away and the liner pushed into the soil, completely filling it. The liner may be advanced by slide hammer and spoon or directly hammering the ring into the soil. The liner is then removed, sealed, labeled and logged onto chain -of -custody forms and packed in a chilled ice chest. 3. The soil samples in the lowermost of brass liners in the sampling tool (if used) will be retained for chemical testing. The samples will be labeled and sealed in the field in their original liners. Sample liners ends will be sealed with Teflon® paper or aluminum foil, capped with clean cap plugs, and labeled and logged onto chain of custody forms. All samples retained for chemical analysis will be stored on ice in a clean, covered cooler-box/ice chest for transport to the Laboratory (see chain -of custody below). Reconnaissance Groundwater Sampling Procedures This procedure is used when reconnaissance groundwater sampling without permanent wells is desired. Sampling from open pits or excavations, HydroPunch®, GeoProbe® or temporarily cased open boreholes may be used. 1. Reconnaissance groundwater sample handling, and storage will follow suggested guidance documents of the Environmental Protection Agency and Regional Water Quality Control Board and local agency guidelines for site investigation. Wes Sampling Protocols last rev. 2/96 Page