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� � d <br /> ' G17 <br /> 7080. Holding tanks are constructed of the same materials and by ' <br /> the same procedures as septic tanks. , <br /> �� <br /> For a single family dwelling, not located in a flood plain, holding <br /> tank capacity should be 1,000 gallons or 400 gallons times the <br /> number of bedrooms, whichever is greatest. In floodplain areas, <br /> the capacity is 100 times the number of bedrooms, times the <br /> number of days the site is flooded during a ten-year flood, or <br /> 1,000 gallons, whichever is greater. Information regarding the <br /> number of days of flooding is available from the 100-year <br /> hydrograph or by contacting the local planning and zoning <br /> agency. <br /> For other establishments, the capacity should be based on <br /> measured flow rates or estimated flow rates. The tank capacity <br /> should be at least five times the average design flow. � <br /> Holding tanks may be allowed by the local unit of government <br /> only as rep.lacements for existing failing systems which pose an <br /> imminent threat to public health and safety, or on existing lots. <br /> Holding tanks may only be installed where it can be conclusively <br /> shown that no other options are available. <br /> .� Holding tanks are prohibited for r�w construction unless <br /> approved by the local unit of govemment. A monitoring and <br /> mitigation plan must be submitted, signed by the owner and a <br /> licensed pumper. A contract for disposal and treatment of the <br /> sewage wastes should be maintained by the homeowner or <br /> pumper with a municipality, agency or firm established for that <br /> purpose. <br /> Holding tanks can only be installed: <br /> • in an area readily accessible to the pump truck under all <br /> weather conditions, <br /> � at least ten feet from property lines, buried pipe <br /> distributing water under pressure, and occupied buildings <br /> at least 50 feet from any source of domestic water supply <br /> or buried water suction line, and <br /> • where accidental spillage during pumping will not <br /> create a nuisance. <br /> The tank should be protected against flotation under high water <br /> table conditions by weight of tank, earth anchors or shallow bury <br /> ; depth. <br /> � <br />