Glossary of Terms

Best Management Practices or BMP means structural devices or nonstructural practices that are designed to prevent pollutants from entering into storm water flows, to direct the flow of storm water, or to treat polluted storm water flows.

Department means the Michigan Department of Environmental Quality (MDEQ).

Division of Health Facility Services -- Health Facility Evaluation Section, Michigan Department of Consumer and Industry Services mailing address is P.O. Box 30195, Lansing, Michigan 48909.

Drainage System Operator: See "Municipal Separate Storm Water Drainage System Operator".

Municipal Separate Storm Water Drainage System Operator means a public body that owns a separate storm water drainage system, or has the power or authority to implement or carry out any of the minimum measures for storm water pollution control as listed in Part I.B. of this general permit. There may be multiple drainage system operators within the same geographic area or for the same separate storm water drainage system.

On-Site Sewage Disposal System (OSDS) means a natural system or mechanical device used to collect, treat, and discharge or reclaim wastewater from one or more dwelling units without the use of community-wide sewers or a centralized treatment facility.

Phase I Permittees include the cities of Ann Arbor, Flint, Grand Rapids, Livonia, Sterling Heights, and Warren, the University of Michigan - Ann Arbor campus, and the Michigan Department of Transportation for its rights-of-way within the political or territorial boundaries of the Phase I cities and university.

Point source means an outfall from a drainage system to waters of the state, or a point where a storm water drainage system discharges into a system operated by another public body.

POTW is a publicly owned treatment works as defined at 40 C.F.R. §403.3.

Public Body means the United States, the State of Michigan, city, village, township, county, public school district, public college or university, single purpose governmental agency; or any other governing body which is created by federal or state statute or law.

Regional Administrator is the Region 5 Administrator, U.S. EPA, located at R-19J, 77 W. Jackson, Blvd., Chicago, Illinois 60604.

Separate Storm Water Drainage System means a system (including but not limited to roads, catch basins, curbs, gutters, parking lots, ditches, conduits, pumping devices, or man-made channels) that is designed or used for collecting or conveying storm water; is not a combined sewer where storm water mixes with sanitary wastes; and is not part of a POTW. The term does not include separate storm water drainage conveyances that serve an individual building or comparable discrete area. The system may convey the non-storm water discharges specified in Part I.A.1.d. and e.

Storm water means storm water runoff, snow melt runoff, and surface runoff and drainage.