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Percolation Test Results The completed percolation test forms are included in Appendix 3 of this report. The forms were signed by Mr. Escotto and indicate percolation rates for the holes based on the final water drop observed. Per San Joaquin County Environmental Health Department's definition, a shallow percolation test hole has a depth between 36 and 42 inches; a satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch (min/in) drop. A deep percolation test hole has a depth greater than 3.5 up to 25 feet, a satisfactory percolation rate for a deep test is 30 min/in or less. For the Site to utilize a standard septic system, one percolation test (either a shallow or deep test) must demonstrate a satisfactory percolation rate within the proposed septic system disposal field. Only shallow tests were performed for the proposed parcels of the Site. Details and results of the percolation tests are summarized in the following table. Table 2. Percolation Test Summary Test No., Percolation Percolation Test Duration Comments Date Tested Test Rate (see notes) Depth (ft.) (minutes/inch) P1, Satisfactory 9/7/11 3.20 4.7 4 hr. Shallow Test perc. rate P2 Satisfactory 9/7/11 3.10 22.7 4 hr. perc. rate Shallow Test Note: A satisfactory percolation rate for a "shallow" test is less than or equal to 60 minutes per inch. A satisfactory percolation rate for a "deep"test is less than or equal to 30 minutes per inch. Discussion of Percolation Test Results The soils within the sewage disposal areas of the Site have demonstrated a satisfactory percolation rate for the use of a standard septic system in accordance with the requirements of the San Joaquin County Environmental Health Department. Discussion of Septic System Sizing Septic system construction utilizing leach lines and seepage pits should follow the San Joaquin County On-Site Wastewater Disposal Standards (2003) where applicable. LOGE 1104 Page 7