The following BMPS shall apply to ministerial as well as discretionary approvals of the following new development or redevelopment projects. In addition, the Director is authorized to require additional BMPS which are listed in the NPDES MS4 Permit Order No. R4-2012-0175.
(A) Signage at storm drains. In the project area of new development or redevelopment subject to this chapter, a notice that dumping in storm drains and catch basins is illegal shall be:
(1) Stenciled in paint or other permanent means at all storm drain inlets and catch basins within the project area;
(2) Posted at all known public accesses to natural or artificial drainage channels within the project area; and
(3) Maintained to preserve the sign.
(B) Outdoor storage of materials.
(1) All materials stored outdoors in new development or redevelopment subject to this chapter which, if exposed to storm water, reasonably may be expected to add pollutants to storm water, shall be isolated from contact with storm water by:
(a) Enclosure in a structure; or
(b) By a surrounding curb or other containment structure.
(2) The storage area for materials referred to in division (1) above must be covered completely:
(a) By impermeable paving; or
(b) By an overhead covering that adequately diverts precipitation away from the ground between the material and the surrounding containment structure.
(C) Outdoor trash storage areas. Except where they serve only single-family residences, solid waste containers in new development or redevelopment subject to this chapter shall be placed between collections in areas that:
(1) Are isolated from contact with storm water flows originating outside the storage area; and
(2) Are surrounded with a barrier sufficient to prevent all trash from being transported out of the storage area, except during collection.
(D) Loading docks. In any 100,000 square foot industrial/ commercial facility or in any automotive service facility in new development or redevelopment subject to this chapter the design of any outdoor loading dock area shall:
(1) Use an overhead covering that prevents the entry of storm water; or
(2) Prevent the entry of storm water by diverting it away; and
(3) Not conduct storm water from any truck well directly into a storm drain system.
(E) Repair and maintenance bays. In any 100,000 square foot industrial/ commercial facility or in any automotive service facility in new development or redevelopment subject to this chapter repair or maintenance bays shall:
(1) Prevent the entry of storm water by diverting it away or by locating such bays indoors;
(2) Use a drainage system that collects all water from washing and from leaks or spills and stores the water in a sump for disposal; and
(3) Does not conduct storm water from the bay directly to a storm drain system.
(F) Wash area. Each wash area for motor vehicles or equipment in any new development or redevelopment subject to this chapter shall use:
(1) An adequate overhead covering;
(2) A device that clarifies or otherwise pretreats all wash water; and
(3) A drain conducting all treated wash water to a sanitary sewer.
(G) Restaurants. Each restaurant in any new development or redevelopment subject to this chapter shall include an area for the washing or cleaning of equipment, which:
(1) If indoors, shall:
(a) Be self-contained;
(b) Use a grease trap; and
(c) Use a drain conducting all waste water to a sanitary sewer;
(2) If outdoors, shall:
(a) Use an overhead covering adequate to prevent contact with storm water;
(b) Be covered with impermeable paving;
(c) Be surrounded by a curb or other containment; and
(d) Use a drain conducting all waste water to a sanitary sewer.
(Ord. 4654, passed 3-10-14)