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13 August 1997 <br /> AGE-NC Project No. 97-0330 <br /> Page 3 of 6 <br /> beginning at 15-feet bsg. If petroleum hydrocarbons are detected during drilling activities, then the <br /> second boring will be completed as a 2-inch diameter ground water monitoring well (Figure 3 - <br /> Proposed Well Construction. <br /> If TPH-d is detected during field activities, additional soil borings may be advanced to assess the <br /> extent of TPH-d in both soil and ground water. Locations of additional soil probe borings will be <br /> based upon field conditions. <br /> Drilling activities will be accomplished utilizing a truck-mounted, hollow stem drill rig and 8.25-inch <br /> hollow-stem augers. Soil cuttings will be stockpiled on-site on plastic sheeting; rinseate generated <br /> during drilling activities will be containerized in properly labeled D.O.T. model 17H 55-gallon drums, <br /> and stored on-site in an area inaccessible to the general public. Disposal alternatives will be evaluated <br /> based on results of the soil and ground water analysis. <br /> Grab ground water samples will be collected from each soil boring utilizing hydro-punch technology. <br /> The hollow stem auger will be driven down to a point just above the water table. A hydro-punch will <br /> be placed through the hollow stem of the augers utilizing hollow rods. The hydro-punch will then be <br /> driven past the lead auger bit into undisturbed materials a few feet below the water table. Ground <br /> water will flow through a steel screen and collected utilizing a small diameter steel bailer and nylon <br /> rope. <br /> Soils are to be described using the Unified Soil Classification System (USCS). Soil sample <br /> descriptions and PID screening results will be summarized on boring logs prepared in a report of <br /> findings. <br /> 3.2. EQUIPMENT DECONTAMINATION <br /> All sampling tools and brass sleeves used for sample collection will be thoroughly rinsed with clean <br /> water after washing with a solution of Alconox. Hollow stem augers will be steam-cleaned prior to <br /> advancement in each borehole. <br /> 3.3. LABORATORY ANALYSIS ,1� P �t}}l <br /> S <br /> Selected soil and ground water samples will be analyzed for total petroleum hydrocarbon quantified <br /> as diesel (TPH-d) and volatile aromatics (benzene, toluene, ethylbenzene and xylenes: BTE&X) in <br /> accordance with EPA methods 8015m and 8020/602, respectively. Laboratory reports of both soil <br /> and ground water analysis, testing methods, laboratory quality assurance/quality control (QA/QC) <br /> reports and sample chain-of-custody documentation will be presented in a report with the findings <br /> and recommendations. <br /> Advanced GeoEnvironmental,Inc. <br />