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23 June 1998 <br /> AGE-NC Project No. 98-0445 <br /> Page 4 of 5 <br /> 8. Screen soil sample duplicates for the presence of volatile organics using an organic vapor <br /> meter equipped with a photo-ionization detector (FID) pre-calibrated to isobutylene. <br /> 9. Log borings in accordance with the Unified Soil Classification System. <br /> 10. Analyzed eight selected soil samples for TPH-g, BTE&X, MTBE, TBA. D1PE, ETBE and <br /> TAME. <br /> 11. Construct one boring as a two-inch diameter ground water monitoring well in accordance <br /> with the design in Figure 3. <br /> 12. Use a surge block or bailer during the construction of ground water wells to set the sand filter <br /> material. prior to installation of the bentonite transition seal. <br /> 13. Store cuttings on -site in properly labeled D.O.T.-approved, model 17H 55-gallon drums on- <br /> site pending laboratory analysis and disposal. <br /> 14. Containerize rinseate generated during drilling activities in properly labeled D.O.T.- <br /> approved, model 17H 55-gallon drums, and store on-site in an area lacking access for the <br /> general public. <br /> 15. Develop new monitoring wells utilizing a steel bailer and a submersible pump until water <br /> is essentially sediment free. <br /> 4.2. COLLECTION OF GROUND WATER SAMPLES <br /> 1. Measure to the nearest 0.01 foot, the static water level in the new well. <br /> 2. Purge the ground water monitoring well using a dedicated bailer surge and purge-pump. At <br /> least three volumes of water will be removed from the well to stabilize temperature, pH, and <br /> conductivity; stabilization parameters will be measured at one-gallon intervals. <br /> 3. Collect a ground water sample using a polyethylene disposable bailers; the sample wil! be <br /> collected in 40-m1 VOA vials preserved with hydrochloric acid. <br /> 4. Label and log the water sample on a chain-of-custody form. <br /> 5. Store the sample in a chilled container and transport under chain-of-custody procedure to a <br /> state-certified laboratory for analysis. The water sample will be analyzed for TPH-g, <br /> BTE&X, MTBE, TBA, DIPE, ETBE and TAME. <br /> 6. Store purged water in a properly labeled D.O.T. model 17H 55-gallon drum on-site, in an <br /> area inaccessible to the general public, pending analytical results. <br />