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method for determining the suitability of the soils for a septic disposal area. Percolation test results are discussed in the following section. Perrcolatio Tes Four shall w per olation tests were conducted on the Site; the soil borings discussed above we a per d for the percolation test holes (Plate 2). Percolation test procedures conformed an Joaquin County Environmental Health Department policy. Preparation and Presaturation of Percolation Test Holes After the borings were advanced by hand wager and the soils logged, the test holes were completed for the percolation tests. Approximately one inch of pea gravel was placed in the bottom of each open soil boring, followed by a 1.5-inch diameter PVC pipe with perforations on the bottom. Pea gravel was then used to backfill a few inches of the annular space. Live Oak presaturated the percolation test holes approximat ly 24 hours prior to the percolation tests. The holes were filled with water to a height df 12 inches above the bottom of the boring for the presaturation. On the day of testing, the shallow holes were found to be intact and dry. Percolation Test Procedure Live Oak conducted the percolation tests for the borings on November 30, 2010. Due to i 't.al_pejeolation rates observed, four-hour tests were selected. Wa�erleyelm asureis were taken every half-hour during this four-hour period. �IChael Escotto, for Registered Environmental Health Specialist at the San Joaquin County Envrehmental Health Department, observed the last half-hour of the tests. �.--- An electronic well sounder with a depth accuracy of 11100th foot was utilized for the water level measurements. The water level was measured against a fixed reference \ point on the well casing. Measurements were recorded on the data sheet in decimal feet. When necessary after measuring the water level, the hole was refilled with water to a level of approximately six inches above the bottom of the hole. Percolation Test Results The completed percolation test forms are included in Appendix 3 of thi report. The forms were signed by Mr. Escotto and indicate a percolation rate for-tile 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 (mpi) drop. For the LOGE1030 Page 6