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?3 <br />MEMORANDUM <br />TO: Eddie Kirk, Planner II <br />FROM: Paul Thames. County Engineer <br />DATE: November 8, 1991 <br />SUBJECT: - Stonegate Mobile Home Park <br />As per your request, I have reviewed the site plans for the <br />above referenced project, particularly with regard to the <br />layout of the waste treatment system. <br />There are several aspects about this project that trouble me. <br />While I have not seen or reviewed any design or engineering <br />information on the spray irrigation treatment system for this <br />project, I have faith in DEM's permitting design review <br />procedure, in the treatment quality provided by spray <br />irrigation systems in general and in the treatment quality <br />provided by spray systems with pretreatment by package waste <br />treatment systems in particular. However, DEM has permitted <br />this particular system with relaxed buffer and setback <br />requirements. This is apparently because the applicant owns <br />all of the properties. except the railroad right -of -way, <br />surrounding the property parcel on which the spray system is <br />located. Generally, the wetted areas of spray irrigation <br />fields are required to be buffered 150 feet to property <br />lines, one hundred feet to right -of -ways. four hundred feet <br />to occupied dwellings not served by the sewer system in <br />question, 200 feet to occupied dwellings served by the <br />treatment system in question and 100 feet to water supply <br />wells. In addition, waste treatment units such as lagoons <br />are required to be at least fifty feet from property lines. <br />In the case of Stonegate's spray fields. the wetted areas <br />appear to come to within twenty -five feet of property lines <br />and the lagoon appears to come within ten feet of property <br />lines. I would recommend that the Planning Department make <br />some sort of requirement of the owner that waste treatment <br />easements and building setbacks be platted. deeded and <br />recorded for all property parcels surrounding the parcel <br />containing the proposed spray irrigation fields and the <br />lagoon. If surrounding properties are sold while the spray <br />system remains in operation and setbacks are not recorded, <br />the new owners could inadvertently build or plan unsuitable <br />activities within areas which should be reserved for waste <br />treatment setbacks. <br />