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VAPOR EXTRACTION WELL <br /> I CONSTRUCTION DETAILS <br /> PROJECT. BEACON STATION #494 VAPOR EXTRACTION WELL NO VW-3 <br /> 2185 E FREMONT ST <br /> STOCKTON, CA <br /> Protective Casing <br /> I—III— Locking Water Tight Cap <br /> Flush Grade Well Construction <br /> Diameter and Mof'I 16 inches, steel <br /> Total Length 10 Inches <br /> Length Above Grade 1/2 inch <br /> +---- Thickness and Type of Seal 1 foot, concrete <br /> Diameter, Material and 2–Inch SCI4 40 PVC <br /> M M Joint Type of Riser Pipe flush thread <br /> F I <br /> > a Type of Backfill Around Riser Type 2 <br /> portland cement <br /> Thickness and Type of Seal 2 feet, bentonite pellets <br /> Distance of Filter Sand 2 feet <br /> Above Tap of Screen <br /> Type of Fliter Around Screen #3 lonestar <br /> Moniforing Well Mat'l SCH 40 PVC <br /> Screen Gauge/Slot Size 0 02–inch <br /> Diameter and Length of Screen 2 inch, 15 feet <br /> Completion Depth 35 feet <br /> Type of Backfill Around Riser bentonite chips <br /> Thickness and Type of Seal 2 feet, bentonite pellets <br /> Distance of Filter Sand 2 feet <br /> Above Top of Screen <br /> Type of Filter Around Screen #3 lonestar <br /> -E Monitoring Well Mat'l SCH 40 PVC <br /> Screen Gauge/Slot Size 0 02–Inch <br /> Diameter and Length of Screen 2 Inch, 15 feet <br /> Depth to Bottom of Vapor Well 75 feet <br /> – - --Thickness and Type of Seal n/a <br /> Total Depth 75 feet <br /> F+– 10 In <br /> COMPLETED 12 45 12-10-92 <br /> ACTON * MICKELSON VAN DAM, INC. <br />