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ARCADIS SOP: Soil Drilling and Sample Collection 7 Rev.#: 21 Rev Date: March 8,2011 • start and finish dates of drilling; • name and location of project; • project number, client, and site location; • sample number and depths; • blow counts and recovery; • depth to water; • type of drilling method; • drilling equipment specifications, including the diameter of drilling tools; • documentation of any elevated organic vapor readings; • names of drillers, inspectors, or other people onsite; and • weather conditions. IX. Quality Assurance Equipment will be cleaned prior to use onsite, between each drilling location, and prior to leaving the site. Drilling equipment and associated tools, including augers, drill rods, sampling equipment, wrenches, and other equipment or tools that may have come in contact with soils and/or waste materials will be cleaned with high-pressure steam-cleaning equipment using a potable water source. The drilling equipment will be cleaned in an area designated by the supervising engineer or geologist that is located outside of the work zone. More elaborate cleaning procedures may be required for reusable soil samplers(split-spoons)when soil samples are obtained for laboratory analysis of chemical constituents. X. References American Society of Testing and Materials (ASTM) D 1586-Standard Test Method for Penetration Test and Split-Barrel Sampling of Soils.