§ 27½-5. Storm water management plans prepared by permit applicants.

(a)

Any nonresidential user applying pursuant to any chapter of the Columbus City Code for authorization, permission, or a permit to construct improvements or conduct other activities on real property shall prepare a detailed written storm water management plan for the management of the volume, velocity, and quality of storm water that has the reasonable potential to be released off site. Storm water management plans shall apply to all contiguous land under common ownership or control, and shall specifically state the address of each parcel of property subject to the plan. The plan shall include a description of the types of all significant materials that will be on the property; the land use and materials management practices that could lead to the pollution of storm water during all phases of existing and proposed land use; the manner in which significant materials will be used, stored, treated or disposed of; the methods to minimize, to the maximum extent practicable, the pollution of storm water; and any additional information concerning storm water management and pollution prevention efforts that are or will be prepared to comply with any rules of permits promulgated pursuant to the portion of 40 Code of Federal Regulations Part 122, that relate to discharges of storm water. The storm water management plan shall be provided to the mayor or his designee.

(b)

A storm water management plan may cover more than one (1) parcel of property so long as the activities are sufficiently similar that the plan is appropriate. Storm water management plans need not be resubmitted where the new permits relate to activities that will not affect the applicability of a previously submitted plan.

(c)

Permits, approvals or other authorizations to construct improvements to real property shall not be issued to nonresidential users pursuant to the Columbus City Code until the city mayor or his designee has on file an applicable storm water management plan. Any permits, approvals or other authorizations shall be granted upon the conditions that, and be revocable if; the permittee fails to at all times manage significant materials in conformity with the storm water management plan, or if the permittee is responsible for violations of the chapter. There shall be an enforceable commitment that the persons described in section 27½-5(a) will update the storm water management plan as necessary if activities at the affected property are modified in a manner that may either cause a material detrimental change in the volume, velocity, or quality of storm water released off site.

(d)

Storm water management plans shall include practicable measures for managing litter; the use, storage, and disposal of significant materials; the use and disposal of pesticides and herbicides; reducing the velocity of releases to a public storm drain system; the use of landscape features to reduce the quantity and velocity of releases to a pubic storm drain system; the use of landscape features to reduce the quantity and velocity of [releases to] storm water management devices; maintenance and cleaning of parking lots and buildings; and ensuring that significant materials are not exposed to direct contact with storm water.

(e)

Erosion and sediment control plans shall be required prior to any grading or other earthwork which affects a land area larger than two thousand (2000) square feet, but less than five (5) acres. In the case where the development exceeds five (5) acres, a storm water pollution control permit from the Mississippi Department of Environmental Quality shall be required. A copy of the approved permit shall be submitted to the department of public works prior to construction.

(1)

The location and types of erosion and sediment control measures shall be graphically indicated on the plans.

(2)

All erosion and sediment control measures shall comply with or be equivocal to the methods outlined in the Planning & Design Manual for the Control of Erosion Sediment & Storm Water, available through the Mississippi Department of Environmental Quality.

(Ord. of 10-1-96(2), § V)