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12430 E.ATKINSON ROAD Project No.2017-00002 Page 19 <br /> Measurement of the water level during the percolation test was from a fixed reference point on the <br /> PVC casing using an electric well sounder with a depth accuracy of 1/100th foot. All tabulated values <br /> on the field data sheet are in decimal feet. After water drop was observed, the holes were checked <br /> ' for refill. The refill level was approximately 0.5 ft(6 inches) of water above the bottom level of the <br /> percolation test hole. The readings were taken every 30 minutes for a period of four(4) hours. <br /> ' 6.2 Percolation Test Forms and Results <br /> The completed percolation test permits and test forms are included in the Appendix D of this report. <br /> A shallow percolation test is defined by the EHD as being between 36 and 42 inches in depth; a <br /> satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. A <br /> deep percolation test is defined as being between 3.5 and 25 feet in depth;a satisfactory percolation <br /> ' rate for a deep test is 30 min/in or less. One percolation test must demonstrate a satisfactory <br /> percolation rate within the proposed septic system disposal field of each parcel to utilize a standard <br /> septic system. Details of the percolation tests are summarized in the table below. <br /> Table 5. <br /> Summary of Percolation Tests—July 12, 2017 <br /> Percolation Percolation <br /> Test No., Test Comments <br /> Test Rate <br /> Date Tested Depth (feet) (minutes/inch) Duration (see notes) <br /> ' 12401 E. Atkinson Road <br /> P-1 (shallow) 3.10 27.78 4 hours Satisfactory <br /> ' P-2 (deep) 24.41 9.25 4 hours Satisfactory <br /> i <br /> ' P-3 (deep) 6.37 0.00 4 hours Unsatisfactory <br /> 12420 E. Atkinson Road <br /> ' P-1 (shallow) 3.42 0.00 4 hours Unsatisfactory <br /> P-2 (deep) 24.60 0.00 4 hours Unsatisfactory <br /> P-3 (deep) 19.96 0.00 4 hours Unsatisfactory <br /> 12430 E. Atkinson Road <br /> ' P-1 (shallow) 3.34 31.25 4 hours Unsatisfactory <br /> P-2 (deep) 24.57 0.00 4 hours Unsatisfactory <br /> ' P-3 (deep) 18.97 19.23 4 hours Satisfactory <br /> Note: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. <br /> ' A satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> The soils within the percolation test area for 12420 E.Atkinson have not demonstrated a satisfactory <br /> Petralogla En <br /> girerco .bion rate in accordance with the requirements of the EHD for the use of a standard septi <br /> 1 26675 Rmelta Road,Gait Ca 95632 <br /> (2091-4003729 <br /> w .petralogia.com <br />