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However, these soil types are moderately drained with slow permeability. In this area, slow permeability occurring in the shallow soils is best counteracted by sumps or seepage pits. Table 1 on Page 6 indicates the potential septic system structures to be installed based on the percolation test results. In addition,because of this high clay content soil, a soils engineer should assess the on-site soils to provide foundation recommendations. Logs of Boring using the Unified Soil Classification System (USCS) as observed from each of the shallow and deep perc test borings, are found on the respective EHD PERCOLATION TEST DATA SHEETS. Generally, the on-site surface soils (<42 inches) are a lean clay with varying degrees of silt content. The deeper subsurface soils show variability from a silty, fine-to-medium sand at the northeast and southern ends of the property, to a silt with some clay at the west side of the property. Significant gravel content soil was encountered only under proposed parcel 7 at 8.5 feet in depth. It is noted that the deeper percolation test depths were set at the minimum depth where favorable soil material was encountered. In other words, instead of automatically drilling the deep perc test borings to 25 feet in depth,wherever higher porosity soil was encountered, is the depth that the respective boring was terminated. This was done to mitigate nitrate loading potential emanating from future septic system. Septic system sump structures have been specified for those Parcels with acceptable perc rates at typical sump depth, as noted in Table 1. Since it is unknown at this time where purchasers of each Parcel will build their homes, and the fact that each parcel is approximately 40 acres in size,percolation testing was conducted on each parcel in Iogical locations, taking underground pipelines into consideration. This was done with concurrence from Mike Huggins of EHD. For example, Parcels 8, 9 10, 11 are adjacent to Chrisman Road. Percolation testing was done 200 feet from Chrisman Road and between the southern and northern property lines on the premise that purchasers of these parcels will probably build near Chrisman Road. The premise also applies to parcels 3, 4, 5, 6 and 7 which also front MacArthur Drive. The remaining parcels I and 2 front a dirt road at the south end of the property where access is easily obtained. These test locations maintain sufficient distance between future septic systems and domestic wells to be installed for each Parcel. Perc test locations were determined by pacing from roads or parcel corners. A measure wheel could not be used due to rough terrain. The following information describes the preparation of the percolation test borings and the actual percolation testing: On May 19, 2005, one shallow perc test boring and one deeper test boring were drilled on all 11 of the proposed parcels in the locations referenced on the Tentative Map found in Appendix D. The sidewalls of the shallow borings 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 all of the test borings. Chesney Consulting 4