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ASSURED INSPECTION MANAGEMENT <br /> AIM � <br /> TESTING LABORATORY <br /> (Page 4 ) <br /> VI GROUND WATER DEPTH AND TESTING (Continued) <br /> Testing was performed for the presence of EDB (ethelylene <br /> dibromide) , DBCP (dibromochloropropane) and Nitrates . A copy of <br /> the test results is enclosed herein . The results indicated that <br /> the substances tested were below the maximum concentration level <br /> allowed by law. <br /> VII SOIL PROFILE AND PERCOLATION TESTS <br /> On June 28, 1991 , four test sites were drilled using a 6" hollow <br /> stem auger. The soils were classified as mostly silty material . <br /> Percolation tests were conducted on July 1 , 1991 . Sandy soil <br /> conditions were encountered at the maximum depths drilled. Due <br /> to the sandy soil conditions having fast percolation rates, it <br /> was necessary to take readings at 10 minute intervals over a one <br /> hour period. A soil profile and percolation test report is <br /> enclosed herein. Tests were witnessed by San Joaquin County <br /> Environmental Health Specialist, Mr. Hector Castro. Results <br /> were found favorable. <br /> VIII CONCLUSION <br /> Based on the past performance of the existing septic system on <br /> the property and adjacent properties, the soil profiles <br /> encountered, and the percolation test results ; it is our <br /> professional opinion that the subject property is well suited <br /> for the existing septic system and that the existing and <br /> proposed septic systems should not adversely affect the quality <br /> of the ground water for the area . <br /> 2900 Standiford Avenue, Suite 16B-278 • Modesto, CA 95350 • (209) 523-0754 <br />