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07 January 1997 <br /> AGE-NC Project No 96-0266 <br /> Page 5 of 6 <br /> 60 PROCEDURES <br /> 61 COLLECTION OF SOIL AND GROUND WATER SAMPLES <br /> For the collection of soil and ground water 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 wot k, while securing proper <br /> city/county soil boring permits <br /> 3 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 /> 4 Initial,advance ten probe borings using a van-mounted Geoprobe equipped with a 1125-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, using a Geoprobe soil sampler assembly <br /> loaded with pre-cleaned 1 125-inch by 6-inch brass sleeves <br /> 7 Preserve soil in the second brass sleeve by covering both ends with Teflon sheets, capping, <br /> and sealing with tape Label and log samples on a chain-of-custody form <br /> 8 Collect a ground water samples from selected probe boring The ground water sample will <br /> be collected using a Geoprobe water sampling assembly The samples will be collected in <br /> 40-m1, EPA approved VOA vials or preserved plastic containers <br /> 9 Store the samples under ice and transport the samples in a chilled container to a State- <br /> certified laboratory for analysis <br /> 10 Screen soil sample duplicates for the presence of volatile organics using a photo-ionization <br /> detector (PID) pre-calibrated to isobutylene <br /> 11 Log borings in accordance with the Unified Soil Classification System <br /> 12 Backfill each probe boring using a concrete-bentonite slurry in the entire depth of the <br /> . probing <br />