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VAPOR EXTRACTION WELL. <br /> CONSTRUCTION DETAILS <br /> PROJECT. BEACON STATION J494 VAPOR EXTRACTION WELL NO VW-4 <br /> 2185 E FREMONT ST <br /> STOCKTON, CA <br /> Protective Casing <br /> I -1 11- Locking Water Tight Cap <br /> - Flush Grade Well Construction <br /> Diameter and Mat'I 24 Inches, steel <br /> Total Length 10 inches <br /> Length Above Grade 1/2 Inch <br /> Thickness and Type of Seat 1 foot, concrete <br /> Diameter, Material and 2—Inch SCH 40 PVC <br /> r Joint Type of Riser Pipe flush thread <br /> t r <br /> > ; Type of Backfill Around Riser Type 2 <br /> porttand cement <br /> Thickness and Type of Seal 2 feet, bentonite pellets <br /> Dlstonce of Filter Sand 2 feet <br /> Above Top of Screen <br /> Type of Filter Around Screen #3 lonestar <br /> Monftoring Well MoVi SCH 40 PVC <br /> :L::= Screen Gauge/Slot Size 0 02—inch <br /> Diameter and Length of Screen 2 inch, 15 feet <br /> Completion Depth 35 feet <br /> �Thickness and Type of Seal bentonite chips <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'I SCH 40 PVC <br /> Screen Gauge/Slat Size 0 02—inch <br /> Diameter and Length of Screen 2 Inch, 15 feet <br /> Depth to Bottom of Vapor Wall 75 feet <br /> Thickness and Type of Seal n/a <br /> Total Depth 75 feet <br /> 10 in <br /> COMPLETED 245 12-10-92 <br /> ACTON • MICKELSON • VAN DAM , INC. <br />