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0 (SSS§ 4.2, 4.3,4.4,4.5, 4.6). As noted, there is one well o the subject property; a domesticlirrigationtyell at the new mobile home re deuce o t 2. On April 19, 2010, this well was sampled under EHD guidelines. The well was turned on and allowed to cycle twice, pumping water for 20 minutes prior to sampling to ensure that aquifer formation water was sampled and not stagnant well water. The well water was sampled from a hose bibb 20 feet east of the well and pump. A plastic bottle was used for the nitrate sample, and three VOC bottles with preservative were used for the DBCP sample. Both samples were placed in a cooled ice chest and then transported to A &L Agricultural Laboratories on the same day, under the Chain of Custody form found in Appendix 5, Table 2 below summarizes the test results for the sampled well: TABLE 2 WELL-WATER TEST RESULTS WELL TESTED,LOCATION NITRATE DIBROMOCHLOROPROPANE AND SAMPLE ID NUMBER CONCEN TION (DBCP)CONCENTRATION DomesticArrigation Well at X21 ppm as Nitra BDL New Mobile Home Residential (MCL 45ppm)- (MCL=0.2 ppb) Structure on Proposed Lot 2 SAMPLE ID: MCL=Maximum Contaminant Level BDL—Below Detectable Limits 26026 S.Kasson Rd. (§ 7.0) CONCLUSIONS The perc test results for all six proposed Parcels (Lots) indicate passing or acceptable permeability at the shallow depths of between 36 and 42 inches. This test depth and test results represent any future installation of leachlines or chambers. Pere tests were not conducted at sump or seepage pit depths because of shallow groundwater in this locale. EHD requires that there be sufficient distance for"treatment" of septic effluent before it encounters the groundwater table. This distance is normally regarded to be five feet for leachlines and ten feet for sumps and seepage pits. Therefore, sufficient distance exists between the bottom of a leachline trench or chambered structure at approximately three feet in depth, and the current groundwater depth of approximately 10 to 15 feet. If a septic system is eventually proposed to be installed, a backhoe test j pit should be performed to adequately assess underlying soil structures and depth to the water table. Potential homebuilders on the six subject Lots must be made aware that any future leachfields should be installed within 100 feet of the perc test locations. Otherwise, additional percolation testing in the proposed new leachfield area will in all likelihood be required by EHD. The underlying soils possess increasing moisture content with increasing depth, due to heavy rainfall this past winter. High moisture content soils are beneficial for the suppression of nitrification, and the promotion of denitrification of nitrate molecules that may have formed through nitrification in the upper soil environments. Page -6- Chesney Consulting