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Per San Joaquin County Environmental Health Department's definition, a shallow <br /> percolation test hole has a depth between 36 and 42 inches; a satisfactory percolation <br /> rate for a shallow test is less than ore equal to 60 minutes <br /> (min <br /> /in)per inch ( /tn) drop. A deep <br /> percolation test hole has a depth greater than 3.5 up to 25 feet; a satisfactory <br /> percolation rate for a deep test is 30 min/in or less. For the Site to utilize a standard <br /> septic system, one percolation test (either a shallow or deep test) must demonstrate a <br /> satisfactory percolation rate within the proposed septic system disposal field. <br /> Both shallow and deep percolation tests were performed. Details and results of the <br /> percolation tests are summarized in the following table. <br /> Table 2. Percolation Test Summary <br /> Test No., Percolation Percolation Test Duration Comments <br /> Date Tested Test Rate (see notes) <br /> Depth (ft.) (minutes/inch) <br /> Test Hole 1, Satisfactory <br /> 6/2/2010 3.3 35.7 4 hr. perc. rate <br /> Shallow Test <br /> Test Hole 2, Satisfactory <br /> 6/2/2010 (11.,4) 17.2 4 hr. perc. rate <br /> Deep Test <br /> Note: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. A satisfactory <br /> percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of the Site have demonstrated a satisfactory <br /> percolation rate for the use of a standard septic system in accordance with the <br /> requirements of the San Joaquin County Environmental Health Department. <br /> Discussion of Septic System Sizing <br /> Septic system construction utilizing leach lines and sumps or filter beds should fol <br /> the San Joaquin County On-Site Wastewater Disposal Standards (2003) where <br /> applicable. <br /> LOGE1016 Page 7 <br />