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27 October 2000 <br /> AGE-NC Project No. 98-0497 <br /> Page 4 of 8 <br /> 3.3. WELL AND BORING COMPLETION <br /> Borings MW-1 through MW-3 were completed as ground water monitoring wells MW-i through <br /> MW-3 using two-inch diameter Schedule 40 PVC casing with 0.010-inch slotted screen installed <br /> from approximately 58 feet to 78 feet bsg and with blank casing extended to the surface. The filter <br /> pack (No. 3 Lonestar sand) was installed from 56 feet to approximately 78 feet bsg in the borings. <br /> A nominal 5-foot bentonite-chip plug was then installed above the filter pack and hydrated with <br /> approximately ten gallons of water. <br /> Soil boring P-3 was backfilled with portland cement to grade through the augers. The ground water <br /> monitoring wells were grouted to near the surface with portland cement. Water-tight, traffic-rated <br /> well boxes were then installed over the wells. As-built well diagrams are depicted on the boring logs <br /> in Appendix A. <br /> 3.4. LABORATORY ANALYSES OF SOIL SAMPLES <br /> Selected soil samples were analyzed for: <br /> Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Method 8015 Modified; <br /> Volatile aromatic hydrocarbons: benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> in accordance with EPA Method 8020; and <br /> Oxygenated compounds: di-isopropyl ether(DIPE),ethyl tertiary-butyl ether(ETBE),methyl <br /> tertiary-butyl ether(MTBE),tertiary-amyl methyl ether(TAME),tertiary butanol(TBA),and <br /> methanol, ethanol, ethyldibro Aide (EDB) and 1,2-dichloroethane (1,2-DCA) in accordance <br /> with EPA Method 8260-Modified, respectively. <br /> 3.5. MONITORING WELL DEVELOPMENT ACTIVITIES <br /> On 17 August 2000, a Solinst water level meter was used to measure the depth to ground water in <br /> monitoring wells MW-1 through MW-3. After recording depth to ground water measurements, a <br /> minimum of 15 to 20 gallons of water was removed from each well using a steel bailer. Temperature, <br /> pH and conductivity of purged ground water were measured at 5-gallon intervals, using a Hydac <br /> water analyzer. Purged water was temporarily stored on-site in 55-gallon DOT-approved H-17 <br /> storage drums pending proper (:Esposal. <br /> Advanced Get)Environmental,Inc. <br />