Agrichemical Facilities


In 1972, the U.S. Congress passed the Clean Water Act requiring a permit to discharge water that had any amount of contamination in it but regulations did not govern Stormwater discharges.  Stormwater discharges were exempt from the regulations.  The Clean Water Act was amended to include the regulation of Stormwaters in 1987. EPA delegated authority for the National Pollutant Discharge Elimination System, or NPDES, permitting program to the Missouri Department of Natural Resources. Under this authority, Missouri published its own stormwater regulations (10 CSR 20-6.200) and under state regulations passed in August 1992, a Missouri State Operating Permit is required for agrichemical facilities.

An agrichemical facility is any site, with the exception of chemical production facilities, where bulk agrichemicals are stored in nonmobile containers or dedicated containers and are being mixed, applied, repackaged or transferred between containers for more than 30 consecutive days per year. Agrichemicals include both fertilizers and pesticides.  Bulk fertilizers include undivided quantities of 5,000 pounds of dry weight or 500 gallons of liquids. Bulk pesticides include undivided quantities greater than 100 pounds dry or 56 gallons liquid.

Department publications


Report Forms for operations under general permit MO-R240000



A fee is required for each type of permit. These fees must be paid before a permit can be processed and issued. Fees for each type of permit are as follows:

Construction Permit
$ 750
Land Disturbance Permit
$ 300
General Operating Permit
$ 50 per year

Other Information

No exposure exemption: The entire operation must have no exposure to rainfall, including the loading and unloading areas.

Statutes and Regulations

Agrichemical related websites