Oklahoma Administrative Code
Title 35 - Oklahoma Department of Agriculture, Food, and Forestry
Chapter 17 - Water Quality
Subchapter 9 - Agricultural Compost Facilities
Section 35:17-9-6 - Leachate and storm water control

(a) The owner or operator shall provide a total retention storage structure that is of sufficient size to contain all leachate and contaminated storm water, the 100 year/24 hour storm event, and maintain one foot of free board.

(b) The owner or operator shall construct a permanent marker that identifies the levels of the 100 year/24 hour storm event volume, the one foot of free board, and the bottom of spillway.

(c) The owner or operator shall provide a drainage system for storm water that prevents erosion at the facility.

(d) The owner or operator shall prevent contact between uncontaminated storm water and source material, composting amendment, composting mix, and final product isolating the material from surface drainage through the use of covers, ditches, dikes, berms, terraces, or other control structures.