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Two new installation permits are also found in the Appendix to illustrate the type of systems installed. Two permits were for the replacement of old septic tanks. The property is in an area designated as "Hardpan"by the EHD color designation map. Therefore, since the water table is comparatively deep, the installation of seepage pits with conventional leachlines are allowed and almost always installed in this area. As discussed below, the water table is approximately 93 feet below grade, according to the 1999 Lines of Equal Depth Map. SOIL PROFILES AND PERCOLATION TESTING As noted on the USDA Soil Survey map, the soil over the entire acreage consists of a Hollenbeck silty clay(#173), which is what was encountered in the surface soils during our drilling procedures. Typically, these soil types are well drained with slow permeability. There are sufficient soil "fines" to impede rapid percolation at leachline trench depth for treatment of pathogens to occur before the effluent reaches the water table. A Log of Boring designating the Unified Soil Classification System (USCS) soil classifications as observed from the percolation test borings are found on the EHD PERCOLATION TEST DATA FORMS. From the drilling of two test borings, it was found that heavy clay soils extend to depths of 25 feet on the south side of the dirt road (access easement) that divides the property into north half and south half sections. It was found from the perc test borings that the north half of the property possesses a sand stratum at the referenced depths encountered for percolation testing. The surface soils have a high clay content percentage and change color from dark brown to light brown at approximately 24 inches below ground surface (b.g.s.). The soil also has a high organic matter content and high moisture content. The USCS classifies the soil from the surface down to the encountered sand strata as CL-ML/CL-CH: a silty clay/lean clay and occasional fat clay, especially in the surface soil horizons. The sandier soils encountered at the deeper depths consist of an SM- SW: a silty sand and a well-graded fine-to-medium sand. Because the sand strata were encountered under the north half of the property at the noted depths,percolation testing was conducted near the north-center of each proposed Parcel. The test locations are measured and illustrated on the Tentative Map. The following information describes the preparation of the percolation test borings and the actual perc testing: On September 13, 2004, 0900 hrs, a truck-mounted B-24 Mobile Drill was used to drill one shallow and one deep perc test boring on each of the six designated Parcels, along with the two test borings referenced above. Solid stem, 4.5 inch dia. auger was used. After boring the shallow test holes, the sidewalls were scored with a pry-bar and the loose material removed with a hand auger. The deep borings could not be scored due to their depths. On September 23, 2004, 0800 hrs, the test borings were prepared for Parcels 4, 5 and 6 by placing two inches of fine gravel at the bottom of each boring, and then a three-inch dia. perforated PVC pipe was inserted. The test borings were pre-saturated with approximately 12 inches of clear water. Percolation testing for Parcels 4, 5 and 6 commenced on September 24, 0650 hrs, under EHD perc test Procedure#2. This four-hour test ensured maximum soil saturation. Page -2- Chesney Consulting