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ASSURED INSPECTION MANAGEMENT <br /> AIM11.1 7 <br /> TESTING LABORATORY <br /> (Page 3 ) <br /> r <br /> VI GROUND WATER DEPTH AND TESTING <br /> As mentioned, there is an operating well located on Mr. Paulus <br /> property. According to Mr. Paulus, the maximum depth of the <br /> well is about 210 feet. According to the map of "Lines of Equal <br /> Depth to Water in Wells" published by the San Joaquin County <br /> Flood Control and Water District in Spring of 1990, the depth to <br /> groundwater at this location is between 70 and 80 feet. <br /> A water sample was obtained from the well on March 1, 1991 . The <br /> ti sample was submitted to J.L. Analytical Services , Inc. , of <br /> Modesto, California on this same date. Testing was performed <br /> for the presence of EDB (ethelylene dibromide) , DBCP <br /> (dibromochloropropane) and Nitrates . A copy of the test results <br /> is enclosed herein. The results indicated that the substances <br /> tested were below the maximum concentration level allowed by <br /> law. <br /> VII SOIL PROFILE AND PERCOLATION TESTS <br /> On February 22, 1991, two test sites were drilled using a 8" <br /> hollow stem auger. One test hole was drilled to a depth of 25 <br /> feet. A second test hole was drilled to a depth of 5 feet. The <br /> soil was classified as mostly silty material (see enclosed <br /> site map and percolation test data) . <br /> Percolation tests were conducted on February 25, 1991, at a <br /> location near center of the proposed leach field (see map) . <br /> Hole number one ( 25 ' depth) had a percolation rate of 21 . 8 <br /> Minutes Per Inch. Hole number two ( 5' depth) had a percolation <br /> rate of 60 Minutes Per Inch. Tests were witnessed by San <br /> Joaquin County Environmental Health Specialist, Mr. Hector <br /> Castro. A soil profile and percolation test report is enclosed <br /> herein. <br /> 2900 Standiford Avenue, Suite 16B-278 • Modesto, CA 95350 • (209) 523-0754 <br />