Laserfiche WebLink
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 Test Hole Percolation SJCEHD <br /> Number Description beth ft. Rate_LminJincN .___Observed <br /> P-1 Clayey 8.2 Did Not Perc No <br /> Gravel) Sand <br /> P-2 Silty Clayey 3.3 250 No <br /> Sand <br /> P-3 Silty Clayey 6.2 I 250 No <br /> Sand <br /> Clayey <br /> P-4 Gravelly 4.1 250 No <br /> P-5 Sandy Silty 11.2 500 No <br /> Ctay <br /> P-6 Clavey Sand 3.3 125 No <br /> Clayey <br /> P-7 Gravel) Sand 10 71 No <br /> P 8 Sandy Clay 3.3 63 No <br /> /3_ CONCL T ON5 <br /> (� The results of our percolation tests indicate that a suitable soil percolation stratum <br /> does not exist on either of the parcels proposed to be split, at the percolation test <br /> /location s at the depths tested. In our his is due to the fine grained an <br /> cemented nature of the soils encountered. A suitable soil con I to as a <br /> stratum capable of percolating water at a rate of 60 min/inch or faster at shallow <br /> depths and 30 min/inch for deep tests. Based on these results, it is our professional <br /> opinion that a conventional septic tank leach trench sewage disposal system designed <br /> per SJCEHD criteria would not adequately serve any residences that would ever be <br /> /built on the proposed parcels. A conventional septic tank/leach trench sewage <br /> disposal system could serve a resi ence on the proposed parses the cemented <br /> subsurfat a soils were deep ripped in order to help improve the percolation <br /> characteristics of the soil. ee rippingis our professional opinion <br /> that there is a need for an engineered system to be installed at est fiy future <br /> development were proposed. We understand that currently no development is <br /> proposed at the project site, however, we recommend that if future development takes <br /> place, homeowners be made aware of the difficult percolation characteristics of th <br /> ear surface soils at the site. <br /> 57556.00USTOSRfiM August 25,2005 <br /> .!; 2005 Kirinfelder,Inc. Page 4 of 5 <br />