Laserfiche WebLink
6 November 1995 <br /> AGE-NC Project No. 95-0120 <br /> Page 2 of 5 <br /> 2. Boring locations will be marked at least 48 hours in advance for an Underground Service <br /> Alert(USA) check of underground utilities or pipes. <br /> 3. Advance three soil borings,using a truck-mounted drill rig, and 10-inch diameter hollow stem <br /> augers to depths of approximately 65 feet bsg. Boring locations are depicted on Figure 2. <br /> 4. Decontaminate all sampling equipment in an alconox solution and rinse twice with water prior <br /> to each sampling run. Steam-clean auger flights before advancement of each boring. <br /> 5. Sample each boring, beginning at 10 feet bsg, utilizing a California split-spoon sampler and <br /> brass sleeves. <br /> 2 inch b 6-inch b <br /> pre-cleanedy <br /> 6. Preserve soil in the brass sleeve by covering both ends with aluminum foil or teflon tape, <br /> capping, and sealing with tape. <br /> 7. Store the samples under ice and transport the samples in a chilled ice chest to a State.certified <br /> laboratory for analysis. <br /> 8. Screen soil sample duplicates for the presence of volatile organics using a photo-ionization <br /> detector(PID) pre-calibrated to isobutylene. <br /> 9. Log soil borings in accordance with the Unified Soil Classification System. <br /> 10. Selected soil samples will be analyzed for TPH-g, volatile aromatics (BTE&X), in <br /> accordance with the appropriate EPA methods. <br /> 11. Cuttings and rinseate generated during drilling activities will be containerized in properly <br /> labeled D.O.T. model 17H 55-gallon drums, and stored on-site in an area inaccessible to the <br /> general public. Disposal alternatives will be evaluated based on results of laboratory analyses. <br /> 4.2. BORING(WELL COMPLETION <br /> For the installation of soil vapor extraction wells, the following procedures will be performed: <br /> 1. Convert two soil borings to cluster-completed SVE wells in accordance with the well design <br /> in Figure 3. <br /> 2. Each.cluster SVE well will be completed using three separate PVC wells with 15 feet of <br /> slotted screen. Bentonite will be placed between each screened interval. <br /> 3. The remaining soil boring will be grouted to the surface with Portland cement. <br />