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# ; <br /> t.. <br /> Health Administration, U.S. Coast Guard and U.S. Environmental Protection <br /> Agency, October 1985. <br /> 2) Notify the EHD 48 hours prior to commencement of any work. <br /> 3) Drill three or four soil borings to ma>amum depths of 80 feet. The borings will be <br /> drilled utilizing a hollow-stem auger drill rig. The estimated boring locations are <br /> depicted on Figure 3. <br /> 4) Collect and log soil samples at 5-foot intervals. Auger returns and soil sample <br /> duplicates will be logged in accordance with the Unified Soil Classification System. <br /> Samples will be obtained using a split-spoon sampler loaded with three pre-cleaned <br /> brass sleeves. <br /> 5) Complete three of the borings as 2-inch groundwater monitoring wells(MW-8, MW-9 <br /> and MW-10). Monitoring wells will be developed using a surge block.The well design <br /> is illustrated in Figure 4. Additional soil borings, if necessary,will be backfilled to the <br /> surface with cement. <br /> 6) Decontaminate sampling equipment in a tri-sodium phosphate solution (TSP) and <br /> rinse twice with water prior to each sampling run. <br /> 7) Preserve soil samples in the lead brass sleeve by covering both ends with aluminum <br /> sheets, capping and sealing with tape. <br /> 8) Label and log soil samples on a chain of custody form. <br /> 9) Store the samples under ice and transport the samples in a chilled container to a <br /> state-certified laboratory for analysis. Approximately fifteen (15) soil samples will be <br /> analyzed for total petroleum hydrocarbons (TPH as gas) and volatile aromatics <br /> (BTE&X) in accordance with EPA methods 8015m and 8020, respectively. A state- <br /> certified mobile laboratory may also be utilized for analysis. <br /> 10) Monitor auger returns and soil sample duplicates for the presence of volatile organics <br /> using a photo-ionization detector (PID) pre-calibrated to isobutylene. <br /> 11) Place auger returns on plastic sheeting and store on-site pending analytical results of <br /> soil samples. <br /> 12) Measure the static water level in each well, relative to the top of the well casing, to <br /> the nearest 0.01 foot 72 hours after well development and survey the relative <br /> elevation of the top of well casings. <br /> 0-68k.1 3 <br /> Ovcon B.laery wP/tiiW.i.l <br />