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APPLIED SCIENCE AND ENGINEERING, INC._ <br /> AS Consulting scientists and Engineers <br /> Groundwa ter Investi a tions Civil and Environmental En ineerin �� <br /> November 20, 200i-349 5th st.,Suite 110,Davis,CA 95616 Tel.(530)756-2268 Fax(530)756-1648 eMail aseaavis� <br /> Mr. Timothy R. O'Brien <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road <br /> Sacramento,CA 95827-3003 <br /> EASTSIDE WINERY,LODI, SAN JOAQUIN COUNTY <br /> MONITORING WELL INSTALLATION REPORT OF RESULTS <br /> A. Well Construction <br /> Three monitoring wells were installed at the site on 11 August 2000 <br /> MW 1: drilled 32 feet,bottom of completed well 31 feet below ground surface <br /> (bgs). <br /> MW2: drilled 40 feet,bottom of completed well 39 feet bgs. <br /> MW3: drilled 30 feet,bottom of completed well 28 feet bgs. <br /> The wells were drilled by Cascade Drilling of Rancho Cordova. The equipment <br /> was a hollow stem auger rig with a hammer and split spoon sampler. The augers <br /> were nominal 10 inch outside diameter(OD). Split-spoon samples(18 inches) <br /> were taken every 2 feet throughout the boring. The cuttings logs were prepared <br /> from the split-spoon samples. The highest occurrence of the water table was <br /> assumed to correspond to a color change from brown to dark grey (i.e. from <br /> oxidized to reducing) in the cuttings. In wells 1 and 2 this transition was at higher <br /> elevations than the water table on the day of drilling. The top of the screened <br /> interval was chosen to include the transition. Well 3 is next to the river and the <br /> water level elevation in the well was the same as the river surface. This was <br /> several feet above the transition to reducing conditions. The top of the screened <br /> section in well 3 was positioned at the water table on the day of drilling. <br /> The casing string was installed through the hollow augers and sand was put in <br /> place while slowly withdrawing the augers. In every case the sand pack extended <br /> above the water table. When the sand was in place,the augers were completely <br /> removed and the bentonite and grout were placed. Diagrams of each well are <br /> attached. A site plan showing the monitoring well locations is also attached. The <br /> elevations and locations of the well heads were determined by a licensed surveyor <br /> and the pertinent details are entered on the diagrams. <br /> B. Well Development <br /> Date: 14 August 2000 <br /> The wells were developed with a 0.5 hp submersible pump delivering 16 gallons <br /> per minute. Water discharged by the development pump was directed into the <br />