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08 September 1997 <br /> AGE-NC Project No. 95-0137 <br /> Page 4 of 6 <br /> The IAS pilot.test will be conducted by injecting air into one IAS well using a compressor-driven <br /> unit. Several parameters, including radius of influence, sparging rate, sparging vapor concentrations, <br /> ground water depths and dissolved oxygen, will be measured at each sparging point and at selected <br /> monitoring wells. Results of the SVE/IAS pilot test will be included in a Corrective Action Plan <br /> (CAP). <br /> 4.0. PROCEDURES <br /> 4.1. DRILLING AND SAMPLING <br /> For the drilling and sampling of soil borings (including installation of soil vapor extraction, air- <br /> sparging and ground water monitoring wells) the following procedures will be performed: <br /> 1. Prepare a Site Health and Safety Plan in accordance with the Occupational Safety and Health <br /> Guidance Manual for Hazardous Waste Site Activities - Prepared by National Institute for <br /> Occupational Safety and Health, Occupational Safety and Health Administration,U.S. Coast <br /> Guard and U.S. Environmental Protection Agency, October 1985. <br /> 2. Notify the PHS-FHD at least 48 hours prior to commencement of any work. <br /> 3. Drill each boring using a truck-mounted drill rig equipped with continuous-flight 8.25-inch <br /> diameter hollow-stem augers or 10-inch diameter hollow-stem augers. <br /> 4. Obtain soil samples from each boring at five-foot intervals using a split-tube sampler loaded <br /> with three pre-cleaned brass sleeves. Selected borings may be sampled continuously to <br /> obtain data from all lithologic zones and determine if vertical migration pathways are <br /> present. <br /> 5. Barings to be completed as ground water monitoring wells will be drilled to a total depth of <br /> approximately 30 feet bsg; borings to be completed as SVE/IAS wells will be drilled to <br /> depths of approximately 35 feet bsg. Furthermore, at least one boring may be advanced to <br /> depths in excess of 60 feet to determine the vertical extent of hydrocarbon-impacted ground <br /> water. <br /> 6. Preserve soil in the lead brass sleeve by covering both ends with Teflon or aluminum sheets, <br /> capping, and sealing with tape. <br /> 7. Label and log soil samples on a chain-of-custody form. <br /> S. Store the samples under ice and transport the samples in a chilled container to a State- <br /> certified laboratory for analysis. <br /> 9. Log auger returns in accordance with the Unified Soil Classification System. <br /> Advanced CeoEnvironmental,Inc. <br />