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' FIELD PROCEDURES CA BORING AND SOIL SAMPLE COLLECTION ' 1. Borings will be drilled with a limited access truck-mounted drilling rig equipped with nominal 8-inch outside diameter hollow stem augers. ' 2. The augers will be cleaned prior to use in each boring. ' 3. Soil descriptions, sample type and depth, and related drilling information will be recorded on a boring log and reviewed by a State of California Registered Engineering Geologist from ' FREY Environmental. 4. Soil samples will be collected using a split spoon sampler. ' S. The sampler will be cleaned between sample intervals using a brush and tap water followed by a brush and TSP solution, a tap water rinse, and deionized water rinse. The sampler will be ' dried by air or with a paper towel prior to sampling. 6. Soil samples will be collected in 2-inch inside diameter and 6-inch long brass or stainless steel ' tubes. Three six-inch tubes are generally enclosed in the sampler. Prior to initial use, the sample tubes will be cleaned, rinsed, and dried using the procedures described above. ' 7. The sampler will be driven into the soil using standard penetration test procedures. 8. Following retrieval of the sampler, one of the two lower 6-inch tubes within the sampler will ' be removed from the sampler,and given sample recovery,the ends covered with aluminum foil and capped with plastic end caps.Each sample will be labeled with the sample number,sample depth, date,and project number. ' 9. The soil in the remaining sample tubes will be used to describe the soil in accordance with the ' Unified Soil Classification System. 10. The collected samples will be placed in plastic bags and stored on ice. ' 11. The samples will be delivered to the laboratory following collection. Sample handling, transport, and delivery to the laboratory will be documented using Chain-of-Custody ' procedures, including the use of Chain-of-Custody forms.