All Permits
NPDES: Individual Permits
WPCF: Individual Permits (including Onsite)
WPCF: Individual Permits (excluding Onsite)
WPCF-OS: Individual WPCF Onsite Permits
General Permits - NPDES and WPCF
Storm Water General Permits - NPDES
Onsite General Permits - WPCF
GEN01, Industrial Wastewater; NPDES cooling water
GEN02, Industrial Wastewater; NPDES filter backwash
GEN03, Industrial Wastewater; NPDES fish hatcheries
GEN04, Industrial Wastewater; NPDES log ponds
GEN05, Industrial Wastewater; NPDES boiler blowdown
GEN06, Industrial Wastewater; WPCF offstream placer mining
GEN07PM-GS, Industrial Wastewater; 700PM-GS, NPDES gravity/siphon suction dredges
GEN07PM-M, Industrial Wastewater; 700PM-M, NPDES motorized suction dredges
GEN09, Industrial Wastewater; NPDES seafood processing
GEN10, Industrial Wastewater; WPCF sand & gravel mining
GEN12A, Stormwater; NPDES sand & gravel mining
GEN12C, Stormwater; NPDES construction more than 1 acre disturbed ground
GEN12C(AGENT), Stormwater; NPDES construction more than 1 acre disturbed ground, issued by agen
GEN12CA, Stormwater; NPDES government agency construction, more than 1 acre disturbed gro
GEN12U, 1200-U UIC General Permit - Water Quality WPCF General Permit
GEN12Z, Stormwater; NPDES specific SIC codes
GEN13, Stormwater; NPDES oily stormwater, oil & water separators
GEN14A, Industrial Wastewater; WPCF seasonal wine & fresh food packing
GEN14B, Industrial Wastewater: WPCF wineries and small food processors
GEN15A, Industrial Wastewater; NPDES petroleum hydrocarbon cleanup
GEN15B, Industrial Wastewater; WPCF petroleum hydrocarbon cleanup
GEN17, Industrial Wastewater; NPDES wash water
GEN17A, Industrial Wastewater; NPDES wash water
GEN17B, Industrial Wastewater; WPCF wash water
GEN19, Industrial Wastewater; NPDES geothermal heat exchange
GEN19B, WPCF 1900B permit fee for Class V geothermal fluids injection during geothermal
GEN20, 2000J Irrigation System General Permit - Water Quality NPDES General Permit.
GEN22, Domestic Wastewater; NPDES floating residences in Lower Columbia-Youngs Subbasin
GEN23, Pesticide General Permit - Water Quality NPDES General Permit
GEN2401, Domestic wastewater, Tier 1 graywater reuse and disposal system general permit.
GEN2402, Domestic wastewater, Tier 2 graywater reuse and disposal system general permit.
GEN2501, 2501 Seasonal Irrigation General Permit - Water Quality WPCF General Permit.
GEN40, 4000 MS4-Phase 2 General Permit – Water Quality NPDES General Permit
NPDES-DOM-A1, Sewage - 50 MGD or more
NPDES-DOM-A2, Sewage - 25 MGD or more but less than 50 MGD
NPDES-DOM-A3, Sewage - 10 MGD or more but less than 25 MGD
NPDES-DOM-Ba, Sewage - 5 MGD or more but less than 10 MGD
NPDES-DOM-C1a, Sewage - 2 MGD or more but less than 5 MGD
NPDES-DOM-C1b, Sewage - 2 MGD or more but less than 5 MGD with discharging lagoons
NPDES-DOM-C2a, Sewage - 1 MGD or more but less than 2 MGD
NPDES-DOM-C2b, Sewage - 1 MGD or more but less than 2 MGD with discharging lagoons
NPDES-DOM-Da, Sewage - less than 1 MGD
NPDES-DOM-Db, Sewage - less than 1 MGD with discharging lagoons
NPDES-DOM-MS4-1, Municipal Separate Storm Sewer System - Phase I
NPDES-DOM-MS4-2, Municipal Separate Storm Sewer System - Phase II
NPDES-IW-B01, Pulp, paper, or other fiber pulping industry.
NPDES-IW-B02, Food/beverage processing - Washing/Packing only
NPDES-IW-B03, Food/beverage processing - Small. Flow less than or equal to 0.1 MGD or flow le
NPDES-IW-B04, Food/beverage processing - Medium. Flow between 0.1 MGD and 1 MGD, or flow great
NPDES-IW-B05, Food/beverage processing - Large and complex. Flow greater than or equal to 1 M
NPDES-IW-B06, Primary smelting and/or refining - Aluminum
NPDES-IW-B07, Primary smelting and/or refining - Non-ferrous metals utilizing sand chlorinatio
NPDES-IW-B08, Primary smelting and/or refining - Ferrous and non-ferrous metals not elsewhere
NPDES-IW-B09, Chemical manufacturing with discharge of process wastewater
NPDES-IW-B14, All facilities not elsewhere classified which dispose of process wastewater (inc
NPDES-IW-B15, All facilities not elsewhere classified which dispose of process wastewater (inc
NPDES-IW-B16, All facilities not elsewhere classified which dispose of non-process wastewaters
NPDES-IW-B17, Dairies, fish hatcheries and other confined feeding operations on individual per
NPDES-IW-B19, Timber and Wood Products - Sawmills, log storage, instream log storage.
NPDES-IW-B20, Timber and Wood Products - Hardboard, veneer, plywood, particle board, pressboar
NPDES-IW-B21, Timber and Wood Products - Wood preserving
WPCF-DOM-Ba, Sewage - 5 MGD or more but less than 10 MGD
WPCF-DOM-C1a, Sewage - 2 MGD or more but less than 5 MGD
WPCF-DOM-C2a, Sewage - 1 MGD or more but less than 2 MGD
WPCF-DOM-Da, Sewage - less than 1 MGD
WPCF-DOM-E, Sewage treatment lagoons with no discharge to surface waters
WPCF-DOM-F, Septage alkaline stabilization facilities
WPCF-DOM-UIC, Municipal Stormwater Permits - UIC
WPCF-IW-B03, Food/beverage processing - Small. Flow less than or equal to 0.1 MGD or flow le
WPCF-IW-B04, Food/beverage processing - Medium. Flow between 0.1 MGD and 1 MGD, or flow great
WPCF-IW-B05, Food/beverage processing - Large and complex. Flow greater than or equal to 1 M
WPCF-IW-B09, Chemical manufacturing with discharge of process wastewater
WPCF-IW-B10, Cooling water discharges in excess of 20,000 BTU/sec
WPCF-IW-B12, Mining operations(includes aggregate/ore processing) - Medium (100,000 to 500,00
WPCF-IW-B13, Mining operations(includes aggregate/ore processing) - Small (less than 100,000
WPCF-IW-B15, All facilities not elsewhere classified which dispose of process wastewater (inc
WPCF-IW-B16, All facilities not elsewhere classified which dispose of non-process wastewaters
WPCF-IW-B18, All facilities which dispose of wastewaters only by evaporation from watertight
WPCF-IW-B19, Timber and Wood Products - Sawmills, log storage, instream log storage.
WPCF-IW-B20, Timber and Wood Products - Hardboard, veneer, plywood, particle board, pressboar
WPCF-IW-B21, Timber and Wood Products - Wood preserving
WPCF-IW-N, Facilities not elsewhere classified which dispose of process wastewater
WPCFOS-A, On-Site sewage lagoon with no discharge
WPCFOS-Bi, Standard or alternative subsurface system with design flow of 20,000 gpd or more
WPCFOS-Bii, Standard or alternative subsurface system with design flow less than 20,000 gpd
WPCFOS-BiiiAS>, Aerobic systems, 2,500 gpd or more
WPCFOS-BiiiRGF>, Recirculating Gravel Filter, 2,500 gpd or more
WPCFOS-BiiiSF>, Sand Filter, 2,500 gpd or more
WPCFOS-BivAS<, Aerobic systems, less than 2,500 gpd
WPCFOS-BivRGF<, Recirculating Gravel Filter, less than 2,500 gpd
WPCFOS-BivSF<, Sand Filter, less than 2,500 gpd
WPCFOS-Bix, Holding tanks