WORK PLANS - Laserfiche WebLink

Home Browse Search

�ft/ %.00 09 February 1996 AGE-NC Project No.95-0185 Page 4 of 5 8. Screen soil sample duplicates for the presence of volatile organics using a photo-ionization detector(PID) pre-calibrated to isobutylene. 9. Log borings in accordance with the Unified Soil Classification System, 10. Selected soil samples will be analyzed for TPH-d and BTE&X in accordance with the appropriate EPA methods. IL Cuttings and rinseate generated during drilling activities will be containerized in properly labeled D.O.T. model 17H 55-gallon drums or placed on plastic sheeting and stored on-site in an area inaccessible to the general public. Disposal alternatives will be evaluated based on results of laboratory analyses. 12. Each boring will be completed as a two-inch or 4-inch diameter monitoring well in accordance with the well design in Figure 3. 13. Develop each monitoring well using a submersible pump until water is essentially sediment free. 14. Survey the top of each well casing to the nearest 1/100th of an inch to determine the elevation relative to a single well. 4.2. COLLECTION OF GROUND WATER SAMPLES 1. No sooner than 48 hours after installation of ground water monitoring wells, measure to the nearest 0.01 foot, the static water level in the new wells. 2. Using a dedicated bailer or submersible pump, surge and purge all wells. At least three well volumes of water will be removed from each well to stabilize temperature, pH, and conductivity; stabilization parameters will be measured at one-well volume intervals. Ground water samples will be collected using polyethylene disposable bailers; samples will be collected in 1-liter amber bottles 40-m1 VOA vials preserved with hydrochloric acid. 3. The removal of"free product" hydrocarbons will initially be accomplished using a dedicated polyethylene disposable bailer. However, depending on the thickness of the"free product" hydrocarbons, a mechanical method will likely be required to successfully eliminate the hydrocarbons. 4. Label and log water samples on a chain-of-custody form. 5. Store the samples in a chilled container and transport under chain-of-custody procedure to a state-certified laboratory for analysis. Water samples will be analyzed for TPH-d, TPH-g and BTE&X in accordance with EPA methods 5030/8015 and 602, respectively. 6. Store purged water in properly labeled D.O.T. model 17H 55-gallon drums on-site in an area inaccessible to the general public, pending analytical results.