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30 July 1999 <br /> AGE-NC Project No 95-0143 <br />' Page 3 of 8 <br />' 2 4 LOGGING <br /> Soil was extruded from a second brass sleeve and screened for the presence of organic vapor using <br />' an organic vapor meter equipped with a photo-Ionization detector (PID Thermo Environmental <br /> 580A, 10 0 eV, calibrated to 1sobutylene), and the readings were recorded on the boring log The soil <br /> was then visually described In accordance with the Unified Soil Classification System <br /> I <br /> 2 5 WELL AND BORING COMPLETION <br />' Bonngs SWI through SW23 were completed as In-situ air sparging wells using 2 5 feet of one-inch <br /> diameter schedule 80 PVC casing with 0 010-Inch slotted screen with blank casing extended to near <br />' the surface The filter pack(No 3 Lonestar sand)was Installed from approximately 38 to 34 feet bsg <br /> A nominal 3-foot bentonite pellet plug was then installed above the filter pack The wells were then <br />' grouted to near the ground surface with portland cement <br /> Borings VW1 through VW5 were completed as vapor extraction wells using 20 feet of two-Inch <br /> diameter schedule 80 PVC casing with 0 020-Inch slotted screen with blank casing extending to the <br /> surface The filter pack was Installed from 25 to 3 5 feet bsg A one-foot bentonite plug was Installed <br /> above the filter pack and hydrated The wells were then grouted to near the surface with portland <br />' cement <br /> A water-tight,traffic-rated well box was Installed over VW 1 through VW5 The well locations are <br />' shown on Figure 3 In-situ air sparging well construction Is Illustrated on Figure 5 Vapor extraction <br /> well construction Is Illustrated on Figure 6 <br />' <br /> 26 LABORATORY ANALYSES OF SOIL SAMPLES <br />' Selected soil samples and the five grab water samples were analyzed for <br />' Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Methods 5030 and 8015m, and <br /> I Volatile aromatic hydrocarbons (benzene, toluene, ethylbenzene and total xylenes, BTEX) <br /> with methyl tertiary-butyl ether(MTBE) In accordance with EPA Method 8020/602 <br /> Advanced GeoEnvironmenial,Inc <br /> I <br />