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Sixteen percolation tests were performed on various sized holes. The test holes �li 2J <br /> were dug on March 11 , 2004. They were soaked with water for 24 hours in <br /> accordance with County Standards and the tests were performed on March 12, 2004. <br /> The condition of the hole after the 24 hour soak period is noted on the County <br /> work sheet in the appendix. It is purposely deleted from the body of this report for L'f <br /> clarity. (See percolation test results to identify hole locations.)• The test holes for <br /> all parcels were performed under a 4 hour test. The last half hour of the test <br /> readings for all parcels were witnessed by a County Health Official and the test data lQ <br /> obtained is enclosed in the Appendix. <br /> Parcel Number Percolation Rate <br /> 1 Failed <br /> 2 3.33 min/in. <br /> 3 12.5 min/in. <br /> 4 4.54 min/in. <br /> 5 41 .7 min/in. <br /> 6 5 min/in. <br /> 7 2.8 min/in. <br /> i 8 5 min/in. <br /> VII. GROUNDWATER <br /> A groundwater test was performed on the domestic well, located at 7066 <br /> Mobley Road. The well was tested for nitrates and DBCP. The samples were <br /> taken by Mike Toy of Dillon & Murphy on March 31 , 2004 and driven directly to <br /> Precision Enviro-Tech. Water was taken from a spigot at the house. The results <br /> from the tests can be found in the Appendix. The results did not yield any reason <br /> for concern regarding ground water in the area. <br /> VIII. CONCLUSION <br /> Based on the results of the percolation test, and the soil profile, it is <br /> Dillon & Murphy's opinion that the seven of the eight parcels tested are suitable for <br /> onsite sewage disposal systems. Parcel 1 will require an Engineered system (see <br /> Appendix) unless a suitable percolation rate can be achieved in the proposed leach (� <br /> area. Any system proposed for any of the eight subject parcels should be designed <br /> and installed based on the most current San Joaquin County criteria. <br /> Based on the depth to ground water in the area and the size of the proposed <br /> parcels, it is our opinion that the installation of any new proposed septic systems, if <br /> properly installed, should not adversely affect the quality of ground water in the <br /> area. <br /> 3 <br /> C:\0396\ SOILS REPORT 040603 <br />