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13 August 1997 <br /> AGE-NC Project No. 96-0264 <br /> Page 3 of 4 <br /> 5.0. PROCEDURES <br /> 5.1. COLLECTION OF SOIL AND GROUNDWATER SAMPLES <br /> For the collection of soil samples, the following procedures will be performed: <br /> 1. Prepare a site health and safety plan in accordance with Occupational Safety and Health <br /> Guidance Manual for Hazardous Waste Site Activities (Prepared by National Institute for <br /> Occupational Safety and Health Administration,U.S. Coast Guard and U.S. Environmental <br /> Protection Agency, 1985). <br /> 2. Notify the PHS-EHD 48 hours prior to commencement of any work, while securing proper <br /> city/county soil boring permits. <br /> 3. Mark boring locations at least 48 hours in advance for an Underground Service Alert(USA) <br /> check of underground utilities or pipes. <br /> 4. Advance six probe borings using a van-mounted Geoprobe equipped with a 1.25-inch <br /> diameter probe rods. Probe borings will be advanced to depths of 15 feet bsg. Probe boring <br /> locations are illustrated on Figure 2. If field conditions indicate that impacted soil and or <br /> ground water is present, additional probe borings may be advanced. <br /> 5. Decontaminate sampling equipment in an Alconox solution and rinse twice with water prior <br /> to each sampling run. <br /> 6. Obtain discrete soil samples at five foot intervals beginning at five feet bsg using a Geoprobe <br /> soil sampler assembly loaded with associated six inch by 1.125 inch diameter brass sleeves. <br /> Preserve a brass sleeve by covering both ends with Teflon sheets, capping, and sealing with <br /> tape. Label and log samples on a chain-of-custody form. <br /> 7. Store the samples under ice and transport the samples in a chilled container to a State- <br /> certified laboratory for analysis. <br /> 8. Screen soil sample duplicates for the presence of volatile organics using an organic vapor <br /> meter, equipped with a photo-ionization detector(PID)pre-calibrated to isobutylene. <br /> 9. Log borings in accordance with the Unified Soil Classification System. <br /> 10. Backfill each probe boring using a cement slurry in the entire depth of the probing. <br /> 11. Analyze selected soil samples for total petroleum hydrocarbons(TPH-all),volatile aromatics <br /> (benzene,toluene, ethylbenzene and total xylenes: BTE&X) and methyl tertiary butyl ether <br /> (MTBE)in accordance with the appropriate EPA methods. If field observations indicate that <br /> Advanced CcoEnvironmental,Inc. <br />