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measured through hole using a rigid steel mcasuring tap and converted to the rate sho«m below. <br /> Drilling of P-1 encountered Sander Silt soils in a medium dense and slightly moist conditions to n <br /> maximum depth explored of 14 feet. Drilling of P-2 encountered sandy clay slightly moist to a <br /> depth of approximately 3.5 feet. Boring logs are .included in Appendix D. Test results arc <br /> presented below. yield percolation test report is :included in Appendix E. Nitrate Loading Study <br /> (NLS) prepared by:fames D Robinson. PE. CEG is included in Appendix F. <br /> Test Hole#1 Test Hole#2 <br /> Diameter: 8-in.ch De the 40-inch Diameter: 8-inch I De the 17G-inch <br /> 1"i3me Readine Vater Drop-:. Refilled Tirne-1 Reading I water Dro2 I Refilled <br /> 8-22 24 - - 8-15 170.0 - - <br /> 842 23.8 0.2-Inch - 845 173.0 a.0 170.0 <br /> 9-15 173.0 3.0 170.0 <br /> 9-45 172.5 2.5 170.5 <br /> 10-15 173.0 2.5 170.0 <br /> Neuter encountered in the test hole.overnight 1045 171.5 1.5 169.0 � <br /> re <br /> (p -soak) 11-15 170.0 1.0 <br /> 11-45 1713 1.3 - <br /> 12-15 172.4 1.1 <br /> PERCOLATION RATE: 27.2/in <br /> 7.0 CONCLUSIONS AND RECOMMENDATIONS <br /> Based on. the review of NLS report, field investigations and laboratory results, "ZEST <br /> recommends: <br /> Well is located on up gradient of septic system area. Groundwater can be used for <br /> drinking purpose for the proposed uses. <br /> Deep percolation test results and sail strata at 10 feet - 16 feet depth (which. is silt with <br /> sand) indicates this strata may be used;tor septic system. <br /> * Septic system is located on downstream of proposed well. will have no impact on septic <br /> system. <br /> + Analysis of water samples collected from faucet of the domestic well on July 12. and 20, <br /> 2010 had low DBCP concentration and little bit higher Nitrates. Agricultural chemical <br /> applications. diaries, and wineries in the area may be the most significant sources of <br /> nitrates into the groundkiater. <br /> • Existing nitrate level in ground wjater will not have detrimental effects on health. A <br /> constant purnpi,ng o:fgroundwater will eventually reduce this level below to MCL. <br /> • NLS report. groundwater analytical test results, and percolation testing results indicate <br /> site is suitable for die proposed construction. <br /> 0 <br /> Ato.C ti+i5 8 od Ali - PE 064568 <br /> �► -7 1,30110 <br /> T, CIVI%_ <br />