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1 <br /> Mr. Minty Hartall Project 803026 <br /> December 13, 2000 <br /> Page 3 <br /> After the sample is collected, the Probe will be removed from the borehole. The Probe <br /> owing, probe tips and screen, and hailers will be decontaminated by steam cleaning or <br /> t iphavolaing (Alconox, does, deionesed water) between each sample. Subsequent <br /> Pashas will be made through der existing borehole and will continue to the bottom of <br /> successively deeper water-bearing zone. <br /> Following the last sample, either an expendable Hydropunchna or equivalent system tip <br /> will be jetted and the hole grouted with a bemonite slurry, from the bottom up, during <br /> removed of the Who casing. Alton ively, the casing will be removed, and a temporary <br /> PVC hemmie pipe will be inserted to the total depth, and the hole will be grouted with a <br /> bermaute slurry from the human of(be hole to the surface. <br /> Groundwater Analytical Program <br /> Groundwater samples will be armlyzed for tier following: <br /> • Taal Petroleum Hydrocmboas as gasoline by EPA Method 8015 <br /> • Be e, toluma elhylbenzene, aM leneby EPAMe 8260 <br /> • Five fuel oxygenates, 12-diclomelhane, and ethylene dibromide by EPA <br /> Method 8260E <br /> Data Analysis and Reporting <br /> At the conclusion of the CPI'/Hydropwch investigation, a report will be Prepared that <br /> documents the results. CPT Profiles and boring log information will be evaluated and <br /> compared to sting strdligmphic aM hydrogeologic uncommon to refine the <br /> uMemtaraling of site geologic and hydmgeologic conditions, including defining <br /> individual water-bear zones (H present), and the degree of interconnection between the <br /> these nines. Geologic cross-sections will be ref ed, incorporating the new information. <br /> All available recent groundwater analytical data (from quarterly groundwater <br /> monitoring, sampling of additional monitoring wells in early 2000 and Hydropunch <br /> data) will be evaluated to assess din lateral and vertical extent of impacts to groundwater. <br /> Site maps will be prepared showing der: monitoring points and groundwater analytical <br /> results. <br /> Sjrnvunssorccm nr•dau wn.Rms�.rva orewwow.r..awsual tlroNiPMrwa <br />