Water Quality Volume (WQv) shall be the equivalent to the volume of runoff from a 3/4-inch rainfall. This shall be determined according to the methods and specifications outlined in the most recently amended Construction General Permit for storm water discharges associated with construction activities in addition to the following criteria:
(a) The storm water quantity volume must be stacked on top of the storm water quality volume for any storm water facility that will also serve as the post-construction water quality facility.
(b) The water quality orifice cannot be less than 2-1/2 inches in diameter.
(c) Non-structural practices must be protected in perpetuity through the use of appropriate legal tools. All legal easements or buffer areas must appear on the final plat per the City Subdivision Regulations and be disclosed to potential buyers.
(d) Any manufactured water quality practice must be construction certified by a representative of the company or engineer representing the developer of its correct installation.
(Ord. 37-09. Passed 12-15-09.)