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25 August 1997 <br /> AGE-NC Project No 95-0173 <br /> Page 5 of 6 <br /> 1 Notify the Public Health Services - Environmental Health Division at least 48 hours prior to <br /> commencement of any work, while securing proper city/county permits <br /> 2 The IAS well location will be marked at least 48-hours in advance for an Underground <br /> Service Alert (USA) check of underground utilities or pipes <br /> 3 Advance one IAS well at the site to a depth of approximately 40-feet bsg The IAS will be <br /> advanced using a truck-mounted drill rig equipped with 8-inch diameter hollow-stem augers <br /> The proposed IAS well location is 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 boring advancement <br /> 5 Obtain soil samples at 5-foot intervals beginning at 15 feet bsg Samples wilt be collected <br /> using a split-tube sampler loaded with three pre-cleaned brass sleeves <br /> 6 Preserve soil samples in the second brass sleeve by covering both ends with Teflon sheets, <br /> capping, and sealing with tape Each sample will be labeled with the following boring <br /> location, depth, time, date and sampler's initials <br /> 7 Monitor soil sample duplicates for the presence of volatile organics using a photo-ionization <br /> detector (PID) pre-calibrated to isobutylene <br /> 8 Log soil sample duplicates in accordance with the Unified Soil Classification System <br /> 9 Store the samples under ice in a ice chest and transport under chain of custody protocol to <br /> a State certified laboratory for analysis <br /> 10 Selected soil samples will be analyzed for TPH-g, TPH-d, BTE&X and MTBE in accordance <br /> with EPA methods 8015m, 8020 and 8260 Prior to laboratory analysis.-the PHS-EIilD will <br /> be given an opportunity to review samples selected for analysis <br /> I I Cuttings generated during drilling activities will be placed on plastic sheeting, wnile rinseate <br /> generated during drilling activities will be contatnenzed in properly labeled D O T model 17H <br /> 55-gallon drums, and stored on-site in an area lacking public access Disposal alternatives will <br /> be evaluated based on results of laboratory analysts <br /> 42 IN-SITU AIR SPARGING WELL COMPLETION <br /> The following tasks will be performed for completion of the IAS well <br /> I The proposed IAS well will be completed utilizing 2-inch diameter PVC casing within an 8- <br /> inch diameter borehole excavation <br /> Advanced GeoEni irmmiental,Inc <br />