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(§ 6.1) Percolation testing was conducted in the location illustrated on the Tentative Map found _ in Appendix C to encompass most of the northwest quadrant of proposed Parcel 1. This is where �r any future development has the potential to occur on this Parcel. The test locations maintain G I� sufficient distance requirements between the on-site domestic well, property lines, etc. The following information describes the preparation of the percolation test borings and the actual percolation testing: (§6.2, 6.3 and 6.5) On November 10, 2010, 1400 hrs, a shallow pert test borings of 42 inches and a deeper test boring of 105 inches (8.75 ft) were hand-drilled on proposed Parcel 1 in the vJ northwest quadrant. The sidewalls of the shallow boring were scored with a pry-bar and the loose material removed. Two inches of fine gravel was placed at the bottom and a three-inch perforated PVC pipe was inserted into both test borings. Both borings were pre-saturated at 0900 hrs on November 11, 2010 with 18 inches of clear water. (§ 6.4) On November 12, 2010, 0800 hrs,percolation testing commenced. There was no standing water after the 24-hour soak period in the test borings as illustrated in Table 1 below. : Consequently, EHD Perc Test Procedure 42 was conducted for both test borings. The last half hour of the test was witnessed by Mike Escotto, R.E.H.S. of the San Joaquin County Environmental Health Department. The maximum acceptable pert rate is 60 min/in for shallow �/� pert tests, and 30 min/in for medium and deep depth pert tests. (§5.4 and 6.8) The following Table illustrates the proposed Parcel number, septic system structure to be installed based on the depth of the passing pert rate, proposed acreage, post soak period status and pert test results for the respective pert test. TABLE 1 PERCOLATION TEST RESULTS AND RELATED DATA '4 PROPOSED PARCEL PROPOSED PERC TEST DEPTHS POST SOAK PERC TEST POTENTIALSEP'fIC ACREAGE PERIOD RESULTS SYSTEM STRUCTURE ATUS Parcel 1 3.0 Net Acres 42 INCHES No SjHle 41.7 min/in Equivalent Feet of Leacbline Water PASSING based on number of bedrooms. Sumps Recommended, ]OS INCHES::] No S 19.2 minlin Water PASSING Parcel 2 9.8 f NetAcres NO PERCOLATION TESTS NNIA REQUIRED UNTIL THERE DESIGNATED IS A PROPOSAL TO REMAINDER BUILD ON THIS PARCEL. l I Page -3- Chesney Consulting