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WELL CONSTRUCTION DETAIL <br />E C <br />A Total Depth of Boring – 75 ft. <br />H <br />B Diameter of Boring – 8 in. <br />Drilling Method – Hollow -Stem Auger <br />C Top of Box Elevation – ft. <br />D Casing Length – 75 ft. <br />F Material – Schedule 40 PVC <br />E Casing Diameter – 2 in. <br />F Depth to Top Perforations – 70 ft. <br />G Perforated Length – 5 ft. <br />D Perforated Interval from 70 to 75 ft. <br />APerforation Type – Machine Slotted <br />Perforation Size – 0.02 in. <br />H Surface Seal From 0 to 1.5 ft. <br />=Seal Material – Concrete <br />= I Backfill From 1.5 to 66 ft. <br />K Backfill Material – Neat Cement <br />G = <br />....... J Seal From 66 to 68 ft. <br />= Seal Material – Bentonite <br />K Gravel Pack From 68 to 75 ft. <br />...... — ...... Pack Material – Lonestar #3 <br />L Bottom Seal – None <br />L <br />B <br />Note: Depths Measured From Initial Ground Surface. <br />Gett/er - Ryan Inc. Proposed Monitoring Well Construction Detail FIGURE <br />Former Chevron Service Station #9-5775 <br />3164 Gold Camp Drive, Site 240 301 West Kettleman Lane 5 <br />Rancho Cordova, CA 95670 Lodi, California <br />JOB NUMBER REVIEWED BY DATE REVISION DATE <br />346408 11/99 <br />