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(f 3 t,Pa.Y, and 54* Thereon-s to septics 4 (s). There have been no repairs/ replacements of septic systemsthin a mile radius of the subject property. This may be attributable to the indigenous sandy/silty soils at leachline and deeper depths, as evidenced by the obtained percolation test results. (�3.4) The subject property is in an area designated as "High Water Table Areas" by EHD's soil/groundwater map denoting the various soil types and septic system requirements throughout the County. However, as referenced below, the water table is deeper in this locale than it is further to the northeast where it is much shallower. EHD requirements in this area are leachlines exclusively, with an equivalent of 100 feet of leachline per bedroom. In addition, because of the "estate-type" zoning of the property, it may be the requirement of the EHD to install a double leachfield system with an alternating distribution box to be installed at the time of construction (Section 10.1). 6 5.4) Since the water table is comparatively deep in this area at approximately 50 feet (discussed in the following Section), and the fact that the shallow(42") soil characteristics are a silty, fine sand and adequate for acceptable effluent management, sumps and seepage pits should not be considered for installation in this location. a 3.5 and .6) As noted above, a review of Application Permits on file at EHD reveals there have been no Applications or Permits for Repairs/Additions/Replacements to septic systems on Linne Road within the study area. 5.4 sud 6.0) SOIL PROFILE AND PERCOLATION TESTING t§ 5§ 5.4))The USDA Soil Map shows the property to consist of a Stomar clay loam (#252). ally, these soil types have slow permeability according to the N.R.C.S. However, a relatively rapid permeability was confirmed by the perc tests in this soil type at the typical leachline depth of approximately 40 inches. Sufficient soil "fines" (silt and clay particles)exist to impede rapid percolation that would occur with an extremely sandy soil. Therefore, treatment of septic effluent can take place before reaching the water table at approximately 50 feet below grade. ( 5"Viand L4�A Log of Boring using the Unified Soil Classification System(U.S.C.S.), as observed in the 42-inch deep perc test borings, is found on the EHD PERCOLATION TEST DATA SHEET. Generally, the underlying surface soils show a consistent lean clay soil with a high degree of stickiness to a depth of 2.5 ft. From this depth to 42 inches exists a fine sandy silt material. No cemented silts hardpan soil stratum was discernible at depths down to the typical leachline depth of 42 inches. ( 6 ercolation testing was conducted at the site illustrated on the Tentative Map found in Appendix C. Aese test locations maintain sufficient distance requirements between property CVis,easements, etc. One test was conducted on proposed Parcel 1 and two tests were conducted on proposed Parcel 2 so that the entire area is covered for percolation testing, as illustrated on the attached Tentative Map. The following information describes the preparation of the percolation test borings and the actual percolation testing: Page -2-