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MONITORING WELL INSTALLATION REPORT <br />Well No MW -7 <br />Project Beacon Cardlock Station #610 Location East side of the site <br />Project No. <br />SSB 92-1001-02 <br />Method of Installation <br />Installed By Twining_ Labs • Date 3/29-31 /93 <br />Type of Well Instld. Monitoring Well <br />Ground Elev. 27.87 feet <br />a: <br />85 <br />Ft. <br />b• <br />20 <br />Ft <br />c: <br />64.75 <br />Ft <br />d• <br />0.25 <br />Ft. <br />e• <br />23 <br />Ft. <br />f <br />5 <br />Ft <br />g• <br />57 <br />Ft. <br />d <br />c <br />a <br />Top of Riser Elev. <br />27.62 feet <br />Cap. Locking PVC Monitoring Well La <br />E v it <br />LD of Well Casing 4 inches <br />g o oa 'Type of Pipe Schedule 40 PVC Pipe <br />0 <br />�° Q•� <br />Type of Backfill Around <br />°�• �• Riser Neat Cement <br />0 0 <br />• o - <br />Top of Seal Elev -29.13 feet <br />f Type of Seal Material Bentonite Clay Pellets <br />iTop of Filter Elev. -34.13 feet <br />I -37.13 feet <br />Type of Filter Material #3 Pre -Washed Monterey Sand <br />Size of Openings <br />0.020 inches <br />Bottom of Well Elev -57.13 feet <br />Bottom of Boring Elev -57.13 feet <br />-- Diameter of Boring 10 inches <br />SSB Environrrantal <br />Corlallltanta, Inc <br />5740 East Shields Avenue, Suite 103, Fresno, CA 93727 <br />(209) 292-5738 <br />