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`2�)(§ 5.1 and 6.0) SOIL PROFILE AND PERCOLATION TESTING (§ 5.4) As noted on the USDA Soil Survey map, the on-site soils consist of Madera sandy loam, #193. Typically, this soil type is moderately well-drained, with a moderately deep hardpan. This j hardpan stratum was encountered during the shallow perc test boring, as indicated by the shallow perc test results. Madera sandy loam has rapid permeability at depths below the encountered hardpan stratum, as illustrated by the deep perc test results. (§ 5.4) The subject property is in an area designated as "Hardpan"by EHD's map denoting the various soil types and septic system requirements throughout San Joaquin County. Consequently, only leachlines and seepage pits are allowed to be installed in this area of the County. However, as referenced above, sumps have been installed in this area. This will be further discussed in the Conclusions Section 7.0. (§ 5.2,5.3, and 5.4) A Log of Boring using the Unified Soil Classification System (USCS), as observed from the 25 ft exploratory/deep perc test boring is found in Appendix B. Generally, the soils show a clayey, silty soil on the surface to five ft, then a consistent silty sandy soil under they'" referenced hardpan strata. (66 ) Percolation testing was conducted in the proposed location of the leachfield for the new residential structure, as determined by the builder, Mr. Tom Schwartz. The perc test locations are 250 ft from the east property line and 88 ft from the Tiffani Lane centerline, as illustrated on the Plot Plan found in Appendix B. (L'6�2,e '6.3 nd 6.5) On May 26, 2006, 0800 hrs, one shallow perc test boring of 42 inches and e perctest boring of 25 ft were drilled with a truck mounted drill rig. 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 three-inch perforated PVC pipe was inserted in each test boring. The borings were pre-saturated on May 29, 2006 at 0900 hrs with approximately 12 inches of water. (§ 6.4) On May 30, 2006, at 0600 hrs,percolation testing commenced. There was approximately 4.5 inches of standing water in the shallow test boring after the 24-hour soak period, and no standing water in the deep perc test boring as illustrated in Table 1 below. Consequently, EHD Perc Test Procedure#1 was conducted for the shallow test, and EHD Perc Test Procedure#2 was conducted for the deep test. The last half hour of the four-hour test was witnessed by Ted Tasiopoulos, R.E.H.S. of the San Joaquin County Environmental Health Department. Perc test results reveal a failing rate of 0.0 minutes/inch(min/in) for the shallow test and a rate of 5.6 for the deep perc test. The maximum acceptable perc rate is 60 min/in for shallow tests and 30 min/in for deep tests. (§ 5.4 and 6.8) The following Table illustrates the APN number, septic system structure based on depth of the passing perc rate, existing acreage, post soak period status and perc test results for the respective perc test depth: Page-2- Chesney Consulting