| Operation or Activity | Nutrients | Metals | Oil / Hydrocarbons | Toxics | Others |
|---|---|---|---|---|---|
| Vehicle Repair | Minor | Major | Major | Major | |
| Vehicle Fueling | Minor | Major | Major | Major | (MTBE not used in MN) |
| Vehicle Washing | Major | Moderate | Moderate | Major | Water Volume |
| Vehicle Storage | Not Pollutant | Moderate | Major | Minor | Trash |
| Outdoor Loading | Moderate | Moderate | Minor | Minor | Organic Matter |
| Outdoor Storage | Moderate | Moderate | Moderate | Moderate | |
| Liquid Spills | Moderate | Moderate | Major | Major | |
| Dumpsters | Moderate | Moderate | Moderate | Major | Trash |
| Building Repair | Minor | Moderate | Moderate | Moderate | |
| Building Maintenance | Not Pollutant | Major | Minor | Moderate | |
| Parking Lot Maintenance | Minor | Moderate | Major | Moderate | Chloride |
| Turf Management | Major | Not Pollutant | Not Pollutant | Major | Pesticides |
| Landscaping | Major | Not Pollutant | Not Pollutant | Major | Pesticides |
| Swimming Pool Discharges | Not Pollutant | Not Pollutant | Not Pollutant | Not Pollutant | Chlorine |
| Golf Courses | Major | Minor | Not Pollutant | Major | Pesticides |
| Hobby Farms/Race Tracks | Moderate | Not Pollutant | Not Pollutant | Not Pollutant | Bacteria |
| Construction | Moderate | Minor | Minor | Moderate | Trash, Sanitary Waste, Sediment |
| Marinas | Moderate | Moderate | Moderate | Major | Bacteria |
| Restaurants | Moderate | Not Pollutant | Major | Not Pollutant | Grease |