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Groundwater Discharge General Permit Categories
GW1510000 - Above Ground Sewage Disposal Systems issued April 1, 2023
GW1520000 - Vehicle Wash - Non-Public issued April 1, 2024
GW1530000 - Meat Processing, issued April 1, 2015
GW1530000 - Meat Processing, issued November 1, 2022
GW1540000 - Gravel, Sand, Limestone, or Dolomite Mining issued April 1, 2020
GW1540000 - Gravel, Sand, Limestone, or Dolomite Mining issued August 1, 2025
GW1550000 - Application of Brine issued April 1, 2020
GW1570000 - Hydrodemolition issued April 1, 2020