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kn KLEINFELDER <br /> File No. 20-2182-24 <br /> February 20, 1990 <br /> of each test are presented in the following table. The county <br /> approved percolation test sheets are attached as an addendum. <br /> Percolation Test Results <br /> Lot/Test Percolation Rate <br /> Number (minutes per inch) <br /> 1 120 <br /> 2 60 <br /> 3 240 <br /> 4 20 <br /> 5 120 <br /> 6 No Percolation* <br /> 7 120 <br /> 8 No Percolation <br /> 9 60 <br /> *No Percolation - Water level did not drop in last 30 minutes of <br /> test. <br /> We note that the county considers 60 minutes per inch the maximum <br /> rate acceptable for standard leach field use. Therefore, based on <br /> our test results, 3 of the proposed lots produced a passing test. <br /> As per county requirements, the next step is to perform deep <br /> percolation tests (generally 10 to 20 feet deep) at each lot in <br /> order to locate a strata with a percolation rate of 30 minutes per <br /> inch or faster. The county allows the use of sump pits provided <br /> the required percolation rate is obtained. <br /> 14 <br />