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Environmental Health Specialist at the San Joaquin County Environmental Health <br />Department. <br />An electronic well sounder with a depth accuracy of 1/100th foot was utilized for the <br />water level measurements. The water level was measured against a fixed reference <br />point on the well casing. Measurements were recorded on the data sheet in decimal <br />feet. When necessary after measuring the water level, each hole was refilled with water <br />to a level of approximately six inches above the bottom of the hole. <br />Percolation Test Results <br />The completed percolation test forms are included in Appendix 3 of this report. The <br />forms were signed by Mr. Garcia Ruiz and indicate a percolation rate for each hole <br />based on the final water drop observed. <br />Per San Joaquin County Environmental Health Department's definition, a shallow <br />percolation test hole has a depth between 18 and 42 inches; a satisfactory percolation <br />rate for a shallow test is greater than or equal to 1 minute per inch (min/in) but less than <br />or equal to 60 min/in drop. For the Site to utilize a standard septic system, one <br />percolation test hole must demonstrate a satisfactory percolation rate within the <br />proposed septic system disposal field. <br />Details and results of the percolation testing are summarized in the following table. <br />Table 2. Percolation Test Summary <br />Test No., Percolation Test Percolation Rate <br />Test Duration Comments <br />Date Tested Depth (ft.) (minutes/inch) <br />(see notes) <br />P1 -S <br />hr. Satisfactory perc. <br />10/20/2021 2.25 27.8 <br />4 <br />rate <br />Shallow Test <br />P2 -S <br />hr. Satisfactory perc. <br />10/20/2021 2.22 5.8 <br />4 <br />rate <br />Shallow Test <br />P3 -S <br />11/19/2021 2.34 5.6 <br />4 hr. Satisfactory perc. <br />Shallow Test <br />rate <br />P4 -S <br />11/19/2021 2.51 9.3 <br />4 hr. Satisfactory perc. <br />Shallow Test <br />rate <br />Note: A satisfactory percolation rate for a "shallow" test is greater than 1 but less than or equal to 60 min. per in. <br />1 Per San Joaquin County Environmental Health Department, a <br />rate between 5.0 and 30.0 min/in requires an <br />8 -foot separation between the bottom of dispersal system and <br />ground water, or mitigation by system design <br />or enhancement. <br />LOGE 2153 Page 7 <br />