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Hand auger drill holes are between 1.5 and 3.0 inches in diameter depending upon the size of the auger. These drill holes are advanced by turning the hand auger handle repeatedly which causes the auger bit to cut into the soil. After advancing the auger approximately 6 inches into the soil, the bucket of the auger fills with soil cuttings and it is then removed from the borehole and the cuttings are emptied. The auger is then replaced in the borehole to advance another 6-inch interval. In this manner the borehole is extended to the designated sampling depth. Soil samples are collected from hand auger soil bores by lowering a soil sampler equipped with a stainless-steel retention sleeve into the undisturbed soil at the bottom of the borehole. The soil sampler is then driven approximately 6 inches using a slide hammer. If pertinent to the investigation, soil descriptions are made from observations of the soil cuttings as they are removed from the borehole. The soil descriptions,including consistency,moisture,particle size,and color,and other relevant observations are recorded on soil boring logs. Soils are classified in general accordance with the Unified Soil Classification System(USCS). The soil bores are abandoned by backfilling with a 6-sack cement slurry containing 3 to 5 percent bentonite, or backfilling with clean soil. Abandonment procedures depend upon the boring depth, depth to groundwater,project objectives, and regulatory requirements. Soil cuttings generated during hand augering are either replaced in the bores, or stockpiled, depending upon project requirements. Stockpiled soil is containerized in United States Department of Transportation-approved drums,or placed on and covered with plastic sheeting,and stored on the Site in an area inaccessible to the general public. Typically,the stockpiled soil is characterized by collecting and analyzing composite samples from the stockpile. Twining can recommend an appropriate method for disposition of stockpiled soil based on the analytical results. Disposal will be the responsibility of the client. Standard Operating Procedures for Sample Handling and Chain-of-Custody: Records are developed for samples which include: sampling date, sample type, location,job number,name of sampling personnel, and method of preservation. Each sample container is labeled immediately following collection. Chain-of-custody protocol, as described in United States Environmental Protection Agency, 1986, Test Methods for Evaluating Solid Waste, SW-846, Third Edition, is followed. Samples will be maintained at approximately 4°C. Upon arrival at the laboratory, the samples will be preserved for analysis as appropriate. Samples will be delivered to Twining's chemistry laboratory in Fresno, California. The Twining representative in charge of the field work transport will direct the transportation of the samples and custody forms to the laboratory,where the samples are transferred to-the sample control department. A receiving clerk,or an authorized analyst,signs the custody forms,presents a duplicate copy to the Twining representative, and transfers the samples to a laboratory analyst. The laboratory manager retains possession of the custody forms during analyses of the samples. The laboratory manager's responsibilities include monitoring the sample integrity within the laboratory. This involves assigning each sample a laboratory number and maintaining cross- reference between the sample's field and laboratory identifications. The analysts' responsibilities