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VAPOR EXTRACTION WELL <br /> CONSTRUCTION DETAILS <br /> PROJECT BEACON STATION #494 VAPOR EXTRACTION WELL NO VW-2 <br /> 2185 E FREMONT ST <br /> STOCKTON, CA <br /> Protective Casing <br /> I I IT Locking Wafer Tight Cap <br /> �----- Flush Grade Well Construction <br /> Diameter and MaH 24 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 SCM 40 PVC <br /> mt Joint Type of Riser Pipe flush thread <br /> 3 Type of Backfill Around Riser Type 2 <br /> Y portland cement <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 lonsstar <br /> Monitoring Well Mat'1 SCH 40 PVC <br /> Screen Gauge/Slot Size 0 02–inch <br /> Diameter and Length of Screen 2 Inch, 15 feet <br /> Completion Depth 40 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 Scraen #3 lonestar <br /> Monitoring Well Mot'I 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 65 feet <br /> Thickness and Type of Seal 10 feet, bentonite chips <br /> Total Depth 75 feet <br /> 10 In <br /> COMPLETED 9 00 12-8-82 <br /> ACTON • MICKELSON • VAN DAM , INC. <br />