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r' <br />*' VAPOR EXTRACTION WELL <br /> 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 <br /> Locking Water Tight Cap <br /> -- Flush Grade Well Construction <br /> Diameter and Nat'l 16 inches, steel <br /> Total Length 10 Inches <br /> i <br /> Length Above Grade 1/2 Inch <br /> -- --Thickness and Type of Seal 1 foot, concrete <br /> ' Diameter, Material and 2—inch SCH 40 PVC <br /> MJoint Type of Riser Pipe flush thread <br /> i l <br /> i Type of Backfill Around Riser Type 2 <br /> portiand cement <br /> Thickness and Type of Seal 2 feet, bentonTfe pellets <br /> Distance of Filter Sand 2 feet <br /> Above Top of Screen <br /> Type of Filter Around Screen #3 lonostor <br /> -E Monitoring Waii Nat'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, bentonTfe pellets <br /> Distance of Filter Sand 2 feet <br /> ' Above Top of Screen <br /> Type of Filter Around Screen #3 lonastar <br /> --EMonitoring Well Nati SCH 40 PVC <br /> Screen Gauge/Slot Size 0..02-Inch <br /> DIarnetar and Length of Screen 2-inch, .15 .fest. <br /> Depth to Bottom of Vapor Well 75 feet <br /> Thickness and Type of Seal n/a <br /> Total Depth 75 feet <br /> 10 In <br /> ' COMPLETED: 12:45 12-10-92 <br /> ' ACTON MICKELSo <br /> N • VAN DAM, INC . <br />