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June 14,2005 <br /> �6.5 <br /> NOA Project Number: E05034A <br /> RPercolation Test Procedure <br /> The percolation tests were conducted for the borings on June 8, 2005 in accordance with the <br /> requirements of the EHD. A percolation test with a duration of four hours was performed for each <br /> hole. The last half an hour of the tests was observed by Ms. Lisa Medina, Senior Registered <br /> Environmental Health Specialist,EHD. <br /> /Measurement <br /> 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 an depth accuracy of 1/100th foot. All tabulated <br /> values on the field data sheet (appendix) are in decimal feet. After water drop was observed, the <br /> holes were checked for refill. The refill level was approximately 0.5 ft (6 inches) of water above the <br /> bottom level of the percolation test hole. The readings were taken every 30 minutes for a period of <br /> Ffour hours. <br /> /6.6 Percolation Test Forms and Results <br /> F <br /> r The completed percolation test forms are included in the appendix of this report. <br /> Fill 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 by the EHD as being between 36 inches and 25 feet in depth; a <br /> Psatisfactory percolation rate for a deep test is less than or equal to 30 minutes per inch drop. One <br /> percolation test must demonstrate a satisfactory percolation rate within the proposed septic system <br /> disposal field of each parcel to utilize a standard septic system. Details of the percolation test is <br /> summarized in Table 6. <br /> Table 6. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test Comment <br /> Date Tested Test Depth(ft) (minutes/inch) Duration (see dotes) <br /> P-1 shallow,6/8/2005 3.40 --- 4-hr No water drop observed the <br /> (Parcel 1) final half an hour,fail <br /> P-1 deep,6/8/2005 22.65 --- 4-hr No water drop observed the <br />'4 (Parcel 1) final half an hour,fail <br /> P-2 shallow,6/8/2005 <br /> 3.05 83.3 4-hr Slow percolation rate,fail. <br /> (Parcel 2) <br /> R-2 dee 6/8/2005 No water drop observed the <br /> (Parcel 2) 17'85 4 he final half an hour,fail <br /> P-3 shallow,6/8/2005 310 62.5 4-hr Slow percolation rate,fail. <br /> G (Parcel 3) <br /> P-3 deep,6/8/2005 22.05 --- 4-hr No water drop observed the <br /> IF +I (Parcel 3) final half an hour,fail <br /> 10 <br /> FI <br /> M <br />