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L <br /> L, February 6,2006 <br /> NOA Project Number: E05173A <br /> L Table 6. <br /> Summary of Percolation Tests. <br /> Percolation Percolation <br /> Test No., Test Depth Rate Test Comment <br /> Date Tested Duration <br /> (ft) (minutes/inch) <br /> P-1 shallow, 11-22-05 3.05 125 ✓ 4hx Unsatisfactory ercolation rate <br /> (Parcel 1) <br /> P-2 shallow, 11-22-05 3.007.9 4-hr Satisfactorypercolation rate <br /> (Parcel 2) � <br /> P-3 shallow,11-22-05 <br /> (Parcel 3) 3.10 19.2 / 4-hr Satisfactory percolation rate <br /> P-4 shallow,11-18-05 3.33 no drop <br /> (Parcel 4) l 4-hr Unsatisfactory eolation rate <br /> P-5 shallow,11-18-05 <br /> (Parcel 5) 3.17 no drop 4-hr Unsatis dory ercolation rate <br /> P-6 shallow,11-22-05 3.09 2501 <br /> 4-hr Unsatisfactory ercolation rate <br /> (Parcel 6) <br /> P-4 shallow Retest,1-20-06 3.29 250 4-hr nsatisfacto p rcolation rate <br /> _ (Parcel 4) / <br /> P-5 shallow Retest, 1-20-06 3.23 no drop 4hr Unsatisfacto percolation rate <br /> (Parcel 5 <br /> Note: El-1D requires a percolation rate for the"shallow' test is less than or equal0 ales per inch(Satisfactory <br /> test). No deep percolation tests are allowed in this area by EM <br /> 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of proposed Parcels 2 and 3 have demonstrated a <br /> ` satisfactory percolation rate in accordance with the requirements of the EHD. The remaining Parcels <br /> 1,4,5,and 6 did not demonstrate a satisfactory percolation rate according to the requirements of the <br /> EHD. The soils of Parcels 2 and 3 appear to be suitable for a standard septic system. The soils of <br /> v Parcels 1,4, 5,and 6 will require additional percolation testing or engineered septic systems to <br /> mitigate the unsatisfactory percolation rates observed. <br /> ` 6.8 Discussion of Septic System Sizing <br /> Septic system construction should follow the San Joa um County On-Site Wastewater Disposal Standards <br /> ` �a phcable. Where the percolation tests failed other percolation tt t could be performed ar <br /> etre sep�eut�tald be designed to mitigate e un f�ctoty percolation tests. <br /> 9 <br />