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• An electronic well sounder with a depth accuracy of 1/100th 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 holes were refilled with water to a level of six inches or more above the bottom of the hole. Percolation Test Results The completed percolation test forms are included in Appendix 3 of this report. The forms were signed by Ms. Kaur and indicate the percolation rate for each hole 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 greater than 1 minute per inch (min/in) drop but less than or equal to 60 min/in drop. For the Site to utilize a standard septic system, one percolation test must demonstrate a satisfactory percolation rate within the proposed septic system disposal field. 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-S Satisfactory 11-20-18 3.26 22.7 4 hr. Shallow Test perc. rate P2-S Satisfactory 11-20-18 3.30 2.8 4 hr. 2 Shallow Test perc. rate P3-S Satisfactory 11-20-18 3.33 4.0 4 hr. 2 Shallow Test perc. rate Note: A satisfactory percolation rate for a "shallow"test is greater than 1 min/in but less than or equal to 60 minutes per inch. 1 Requires 8' separation between bottom of dispersal system and ground water, or mitigation by system design or enhancement. 2 Requires 20' separation between bottom of dispersal system and ground water, or mitigation by system design or enhancement. • LOGE 1845 Page 7