6. Any use that will render impervious more than fifteen (15%) percent or two
6. Any use that will render impervious more than fifteen (15%) percent or two thousand five hundred (2,500s.f.) square feet of any lot, whichever is greater. A system for groundwater recharge must be provided which does not degrade groundwater quality. For non-residential uses, recharge shall be by storm water infiltration basins or similar system covered with natural vegetation, and dry wells shall be used only where other methods are not feasible. For all nonresidential uses, all such basins and wells shall be preceded by oil, grease and sediment traps to facilitate removal of contamination. Any and all recharge areas shall be permanently maintained in full working order by the owner.