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Document ID us-repewr-2025-07-10 Title Resources for Permit Writers URL https://www.epa.gov/npdes/resources-permit-writers Jurisdiction /us Subdomain(s) none Language Status completed Analyzed at 2026-05-12 04:45:20.718214+00:00 Relevance inventory_targeted_fetch

Q Qualitative Requirements (0)

No qualitative requirements.

P Quantitative Requirements (0)

No quantitative requirements.

D Definitions (30)

Req ID Category Name Context Confidence
#D001NPDESNational Pollutant Discharge Elimination Systemhigh
#D002WETWhole Effluent Toxicityhigh
#D003CWAClean Water Acthigh
#D004EFDCEnvironment Fluid Dynamics Codehigh
#D005SWMMStorm Water Management Modelhigh
#D006SWMM-CATStorm Water Management Model Adjustment Toolhigh
#D007HAWQSHydrologic and Water Quality Systemhigh
#D008NPDES Permit Writers’ Clearinghousea searchable database containing resources such as permits, templates, and webinars that are shared by NPDES authorities.high
#D009CORMIXa U.S. EPA-supported mixing zone model and decision support system for environmental impact assessment of regulatory mixing zones resulting from continuous point source discharges.high
#D010Delft3Da modeling package that allows users to simulate flow, sediment transport, water quality in a range of water bodies.high
#D011Delft3D-FLOWthe hydrodynamic module in the Delft 3D package that applies to thermal modeling.high
#D012NPDES permit writers' manualprovides a comprehensive overview of the framework of the NPDES program.high
#D013CAFOConcentrated Animal Feeding Operationshigh
#D014CSOCombined Sewer Overflowshigh
#D015SWToolboxdesigned to assist NPDES permit writers and other practitioners estimate critical stream statistics such as the 7Q10.high
#D016CE-QUAL-W2can simulate thermal mixing in rivers, lakes, reservoirs, and estuaries, but is best suited for long and narrow water bodies because it assumes lateral homogeneity.high
#D017National Stormwater Calculatorestimates the annual amount of stormwater runoff from a specific location anywhere in the United States.high
#D018NPDES permit fact sheet checklistlists all of the elements of an NPDES permit fact sheet that are required by the NPDES regulations, with citations to the regulations.high
#D019Seafood ProcessingSeafood preserving and canning facilities receive raw or frozen seafood from harvesting operations (e.g. fishing, trapping, netting). The facilities prepare the seafood products by butchering and cleaning. Prior to packaging, the seafood may be preserved typically by curing, cooking, or freezing.high
#D020NPDESNational Pollutant Discharge Elimination Systemhigh
#D021NAICSNorth American Industrial Classification Systemhigh
#D022PSESPretreatment Standards for Existing Sourceshigh
#D023BPTBest Practicable Pollutant Control Technology Currently Availablehigh
#D024BATBest Available Technology Economically Achievablehigh
#D025NSPSNew Source Performance Standardshigh
#D026PSNSPretreatment Standards for New Sourceshigh
#D027.govA .gov website belongs to an official government organization in the United States.high
#D028HTTPSA lock (Lock A locked padlock) or https:// means you’ve safely connected to the .gov website.high
#D029*requiredhigh
#D030Canned and Preserved Seafood CategorySeafood Processing Effluent Guidelines and Standardsmedium