Section 327IAC19-11-2. Storm water management

   (a) When evaluating storm water management, CFOs must consider the following:

(1) All activities and significant materials that may reasonably be expected to add significant amounts of pollutants to storm water draining from the facility.

(2) The potential pollutant sources from the following:

(A) Immediate access roads and rail lines at the CFO used or traveled by carriers of raw materials, waste material, or byproducts used or created by the facility.

(B) Refuse sites.

(C) Sites used for the storage and maintenance of material handling equipment.

(D) Shipping and receiving areas.

(E) Paved, dirt, or gravel parking areas for storage of vehicles to be maintained.

(F) Materials that are treated, stored, or disposed of in a manner to allow exposure to storm water where that exposure may release contaminants into the storm water.

(G) The method and location of on-site storage or disposal of significant materials.

(3) The location of existing structural and nonstructural control measures to reduce pollutants in storm water runoff.

(4) Materials management practices employed to minimize contact of materials with storm water runoff.

  (b) The following storm water management practices must be implemented:

(1) Good housekeeping. All areas that may contribute pollutants to storm water discharges should be maintained in a clean, orderly manner.

(2) Preventative maintenance. A preventative maintenance program including timely inspection and maintenance schedule of storm water management devices.

(3) Sediment and erosion control. Identify areas that, due to topography, activities, or other factors, have a high potential for significant soil erosion and identify structural, vegetative, and initiate stabilization measures to limit erosion.

(4) Management of storm water runoff. Practices (other than those that control the generation or source or sources of pollutants) used to divert, infiltrate, reuse, or otherwise manage storm water runoff so as to reduce pollutants in storm water discharges from the site.

  (c) The owner/operator of the CFO must complete a certification on a form provided by the department that the requirements of this section have been met. This certification must be kept in the operating record.

  (d) If the implemented storm water pollution prevention practices are deemed ineffective by the department, the commissioner may require additional measures to be taken. The commissioner shall provide written documentation describing the basis for any required changes. (Water Pollution Control Division; 327 IAC 19-11-2; filed Feb 6, 2012, 2:58 p.m.: 20120307-IR-327090615FRA, eff Jul 1, 2012)