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I <br /> • k'q KLEINFELDER <br /> File No. 20-2662-06 <br /> January 24, 1990 <br /> with other drainage basins in the area, we recommend a design ) <br /> I <br /> value of 2 to 3 gfd be used. <br /> One approximate 3-foot deep percolation test was performed at, <br /> each lot. The percolation tests were begun by filling the test <br /> holes to the surface with water and allowing them to soak <br /> overnight. On January 18, 1990, our representative returned and, <br /> performed the tests according to county guidelines . The tests' <br /> were performed for a period of from 30 minutes to 4 hours . The <br /> last 30 minutes of each test was used to calculate the following <br /> percolation rates in minutes per inch (min/in) : <br /> LOT PERCOLATION TESTS <br /> Percolation <br /> Lot No. Depth Rate (min/inch) <br /> 1 3 ' NP* <br /> 2 31 C--a0 _-- <br /> 3 3 ' 480 <br /> 4 3 ' X88 <br /> 5 3 ' _48 <br /> 6 3 ' NP <br /> 7 31 80 '-- <br /> *NP - No Percolation (water level did not drop in 30 minute <br /> period) <br /> We note that the county considers 60 min/in the maximum rate <br /> acceptable for standard leach field use. Therefore, based on our <br /> test results, 2 of the proposed lots produced a passing test. <br /> Copies of the county approved field test sheets are included with <br /> this report. <br /> 4 <br />