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' 28 August 2000 <br /> AGE-NC Project No 97-0249 <br /> Page 7 of 10 <br />' will be collected in intervals ofporous and permeable material All rinseate generated during drilling <br /> activities will be containerized in properly labeled DOT-approved 55-gallon drums, and was stored <br />' on-site in an area lacking public access All soil bonngs were backfilled over their entire depth with <br /> a portland cement grout mix <br />' Following sample collection, the samples will be placed in laboratory-supplied containers and <br /> transported under chain-of-custody to a DHS-certified laboratory <br />' Proposed soil boring locations are illustrated on Figure 2 Following borehole advancement,portland <br /> cement(grout mix)will be utilized to backfill each borehole utilizing a tremae pipe The PHS-EHD <br /> will be given the opportunity to Inspect the grout mix prior to backfilling activities <br /> 4 2 MONITORING WELL DRILLING <br /> Soil borings will be advanced utilizing a truck-mounted,hollow-stem drill rig and 8-inch diameter <br /> hollow-stem augers Cuttings generated during drilling activities will be placed on plastic sheeting <br /> lie and covered Rinseate will be containerized in properly labeled D O T approved 55-gallon drums, <br /> and stored on-site in an area lacking public access Disposal alternatives will be evaluated based on <br /> results of soil and water analysis <br /> 43 SOIL SAMPLING <br /> Soil samples will be collected at five-foot intervals beginning p ginni g at a depth of 5 feet bsg, utilizing a <br /> modified California split-spoon sampler and brass sleeves The sampler will be driven by dropping <br /> a 140-pound weight from a height of 30 inches(blow counts) The blow counts will be recorded on <br /> boring logs Upon soil sample retrieval, the middle brass sleeve will be removed from the sampler <br /> The ends of the brass sleeve will be immediately covered with Teflon or aluminum sheets, sealed <br /> with plastic end caps, secured with tape and immediately placed in a chilled container for <br /> transportation under chain of custody to a state-certified laboratory Each sample sleeve will be <br /> labeled with the boring location, sample depth, sample time, sampling date and sampler's initials <br /> During sampling activities, sample duplicates will be monitored for the presence of organic vapor <br /> using a photo-ionization detector (PID Thermo Environmental 580A, 10 0 eV, calibrated to <br /> isobutylene) and will be visually described on boring logs using the Unified Soil Classification <br /> System (USCS) <br /> Advanced GeoEnviroumental,Inc <br />