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.. `. I--00 in KLEINFELDER <br /> Yellowlark Gravelly Loam soil series (Map Symbol 280). These soils are all described <br /> as being "well drained" and having "severe" percolation characteristics for septic tank <br /> absorption due to slow percolation and cemented hardpan. Other attributes are given <br /> in the table below: <br /> L Map Available Water Organic <br /> Symbol Soil Name Capacity, pH Content, <br /> inches/inch percent <br /> L 135 Corning-Redding Complex 0.04 - 0.14 4.5 - 7.3 0.5 - 2 <br /> 136 Corning-Redding Complex 0.04 - 0.14 4.5 - 7.3 0.5 - 2 <br /> 220 Redding Gravelly Loam 0.04 - 0.14 5.1 - 6.5 <2 <br /> 280 Yellowlark Gravelly Loam 0.04 - 0.17 5.1 - 6.5 1 <2 <br /> 7. PERCOLATION TESTING <br /> The results of our percolation tests are presented below. Copies of our field <br /> percolation test results are attached. <br /> Test Soil Description Test Hole Percolation Rate SJCEHD <br /> Number Depth (feet) minute/inch Observed <br /> P-1 Clayey Gravelly Sand 8.2 Did Not Perc No <br /> P-2 Silty Clayey Sand 3.3 250 No <br /> P-3 Silty Clayey Sand 6.2 250 No <br /> P-4 Clayey Gravelly Sand 4.1 250 No <br /> P-5 Sandy Silty Clay 11.2 500 No <br /> _ P-6 Clayey Sand 3.3 125 No <br /> P-7 Clayey Gravelly Sand 10 71 No <br /> P-8 Sandy Clay 3.3 63 No <br /> P-9 Silty Clayey Sand 5.3 Did Not Perc Yes <br /> QSilty Clayey Sand 3.6 id-Pl tPerc Yes <br /> Clayey Gravelly Sand 3.4 5 Yes <br /> Clayey Gravelly Sand 4.9 Yes <br /> Sandy Clay 3 Did Not Perc Yes <br /> P-14 Sandy Clayey Silt 5.2 Did Not Perc Yes <br /> P-15 Clayey Sand 3.2 Did Not Perc Yes <br /> P-16 Clayey Sand 4.4 Did Not Perc Yes <br /> 72113.E01/ST06R813 July 26,2006 / <br /> ©2006 Kleinfelder,Inc. Page 4 of 6 r <br /> L <br />