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CF17onthe 5.3, and 5.4) A Log of Boring using the Unified Soil Classification System(USCS) is found EHD PERCOLATION TEST DATA SHEET. Soil classification was observed from a 21 feetxploratory boring completed on September 4,2008, near the center of the proposed effluent disposal area. Generally, the soils show a compacted one foot deep surface soil composed of clay, i silt, gravel and sand. From one to seven feet is a clayey gravel, and from seven to 13 feet is a silty, sandy clay with no gravel. A stratum of clayey gravel/cobble exists from 13 to 21 feet. Auger refusal occurred at 21 feet due to severe gravel/cobble. This exploratory boring was not perc tested. (§ 6.1) Percolation testing was conducted in the location as illustrated on the Site Plan and Aerial Maps found in Appendix B. The following information describes the preparation of the percolation test boring and the actual percolation testing: (§ 6.2, 6.3 and 6.5) On September 4, 2008, 0900 hrs, one shallow perc test boring of 42 inches and one deep perc boring of 10.6 feet were drilled with a B-20 Mobile Drill rig in the referenced test location. The sidewall of the shallow boring was scored with a pry-bar and the loose material removed: Two inches of fine gravel was placed at the bottom of the two borings and three-inch perforated PVC pipe was then inserted. The borings were pre-saturated with 12 inches of water at 1030 hrs on September 7, 2008. I (§ 6.4) On September 8, 2008, 0800 hrs,percolation testing commenced for both perc test borings. There was no standing water after the 24-hour soak period, as illustrated in Table 1 below. Consequently, EHD Perc Test Procedure#2 was conducted.for t borings. ' The last half hour of the tests was witnessc�rTedTasiopuualos, R.E. of the San Joaquin County Environmental Health Department. The rr� imum able acceptper a is 60 min/in for shallow perc tests.and 30 min/in for the deeper perc tests. I (§ 5.4 and 6.8) The following Table illustrates the existing Parcel number, septic system structure j to be installed based on the depth of the passing perc rate, existing acreage, post soak period status and perc test results: TABLE 1 PERCOLATIONaTEST,RESULTS ANDRE LATED DATA PARCEL ACREAGE SHALLOW POST SOAK PERC TEST POTENTIAL SEPTIC PERC TEST DEPTH PERIOD RESULTS SYSTEM STRUCTURE DEEP STATUS PERC TEST DEPTH r Parcel 265-070-13 314 Acres 42 INCHESTAfter anding 7,3 nun/in in Hole 3-40 FOOT re-Soak LEACHLINES and 10.5 FEETanding 9.3 min/in 3-2x12 FOOT inHoleSUMPS re-Soak Page -3- Chesney Consulting