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16 January 2001 <br />' AGE-NC Protect No 98-0505 <br /> Page 3 of 9 <br />' are DHS-certified analytical laboratories <br />' 32 LOGGING <br /> Soil was extruded from a second brass sleeve or from the unpreserved portions of the soil in the core <br />' barrel samples and was screened for the presence of organic vapor using an organic vapor meter <br /> (OVM) equipped with a photo-ionization detector (PID Thermo Environmental 580A, 10 0 eV, <br /> calibrated to isobutylene), and the OVM readings were recorded on the boring log The soil was then <br />' visually described in accordance with the Unified Soil Classification System(see Appendix A) <br />' 3 3 WELL AND BORING COMPLETION <br />' Borings MW-6 through MW-8 were completed as ground water monitoring wells MW-6 through <br /> MW-8 using two-mch diameter Schedule 40 PVC casing with 0 010-inch slotted screen Soil boring <br /> MW-6 was advanced to 65 feet bsg, soil borings MW-7 and MW-8 were advanced to 30 feet bsg <br />'. Monitoring well MW-6 was installed using five feet of screen from approximately 60 feet to 65 feet <br /> bsg and with blank casing extended to the surface The filter pack for MW-6 (No 3 Lonestar sand) <br /> was installed from 54 feet to 65 5 feet bsg, a 5-foot bentonite-pellet plug was then installed above <br />' the filter pack Monitoring wells MW-7 and MW-8 were installed using 15 feet of screen from <br /> approximately 15 feet to 30 feet bsg The filter pack was installed from 13 feet to 30 feet bsg in the <br /> borings A nominal 3-foot bentonite-chip plug was installed above the filter pack in MW-7 and <br />' <br /> MW-8 The bentonite plugs in the three wells were hydrated for approximately thirty minutes prior <br /> to grouting <br /> The ground water monitoring wells were grouted to near the surface with portland cement Water- <br /> tight, traffic-rated well boxes were then mstalled over the wells As-built well diagrams are depicted <br /> on the boring logs 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) m accordance with EPA <br /> 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), <br /> Advanced CeoEnvironmental,Inc <br />