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Winslow Property <br /> Page No. 3 <br /> Water was sampled from the on-site well on the proposed Parcel <br /> 2 on May 28, 1996 and tested for the presence of nitrates and <br /> dibromochloropropane (DBCP) . Test results indicated that DBCP was <br /> non-detected but the level of nitrate was 89 mg/1, which is well <br /> above the Maximum Contaminate Level (MCL) of 45 mg/l. A copy of <br /> the test results is included in the Appendix. <br /> VI . SOIL PROFILE AND PERCOLATION TESTS <br /> Two test holes were excavated to a depth of 10 feet near each <br /> of the existing septic systems in order to determine the soil <br /> profile in the general area. For approximate location of the test <br /> holes (PT) see the Location Map in the Appendix. The soil profile <br /> holes were logged by an engineer and a description of the soils <br /> encountered in each hole is contained in the Appendix. The surface <br /> soils consisted of a brown silty fine to medium sand. The surface <br /> soils were underlain by a slightly cemented layer of sandy silt at <br /> a depth of 6 feet, which in turn was underlain by a brown silty <br /> sand. For a more detailed description of the soils encountered see <br /> the log of test holes. <br /> Shallow (36" deep) percolation tests were performed at each of <br /> the test hole locations. Ten to eleven inch diameter holes were <br /> excavated and 2 inches of gravel placed in the bottom of each hole. <br /> Two and three-inch diameter perforated pipes were then placed and <br /> backfilled with gravel. Each of the test holes was filled with <br /> water 24 hours prior to running the tests. The last half hour of <br /> test readings were witnessed by a county health official and the <br /> test data obtained is enclosed in the appendix. The percolation <br /> rates have been adjusted to account for the gravel and pipe <br /> backfill. Calculations for adjustments are on the test data <br /> sheets. <br /> A summary of the test results is presented next: <br /> Diameter of Depth of <br /> Test No. Hole (in. ) Hole Adj . Perc. Rate (min/in) <br /> PT-1 11 3 ' 9. 9 <br /> PT-2 10 3 ' 4. 7 <br /> +9 F It s <br /> VERs ti <br /> N <br /> Z W <br /> O � <br /> P <br /> �Ssoc% <br />