stormwater bmps for SIC Code 3421

Stormwater BMPs for SIC Code 3421, Stormwater Permitting Guide

SIC Code 3421


2026 Stormwater Permit Compliance for SIC Code 3421 and applicable BMPs




Common Type-Based, Structural BMPs

  • Point BMP
    • Constructed Wetland
    • Infiltration Basin
    • Bioretention
    • Sand Filter (surface)
    • Rain Barrel
    • Cistern
    • Wet Pond
    • Dry Pond
  • Linear BMP
    • Grassed Swale
    • Infiltration Trench
    • Vegetated Filter Strip
    • Sand Filter (non-surface)
  • Area BMP
    • Green Roof
    • Porous Pavement


Common Pollutant Sources:

  • Exposure of lumber, residues, and vehicles/equipment to precipitation
  • Parts cleaning
  • Waste disposal of oily rags, oil and gas filters, batteries, coolants, degreasers
  • Fluid replacement including hydraulic fluid, oil, transmission fluid, radiator fluids, and grease
  • Diesel fuel


Common Toxicants

  • Nutrients
    • nitrates
  • Pesticides
    • 2,4-D γ -BHC (lindane)
    • malathion
    • atrazine
    • chlordane
    • diazinon
  • Other organics
    • VOCs
    • 1,3-dichloro-benzene
    • anthracene
    • benzo(a) anthracene
    • benzo(b) fluoranthene
    • benzo(k) fluoranthene
    • benzo(a) pyrene
    • bis (2-ethylhexyl) phthalate
    • fluoranthene
    • fluorene
    • naphthalene
    • pentachlorophenol
    • phenanthrene
    • pyrene
  • Pathogens
    • enteroviruses
    • Shigella
    • Pseudomonas aeruginosa
    • protozoa
  • Heavy Metals
    • nickel
    • cadmium
    • chromium
    • lead
    • zinc
    • copper
  • Salts
    • chloride


Common Pollutants:

  • BOD, TSS, oil, and grease
  • Solvents, oil, heavy metals, acid/alkaline wastes
  • Oil, heavy metals, solvents, acids
  • Oil and grease, arsenic, lead, cadmium, chromium, COD, and benzene
  • Diesel, gasoline, oil

Factors that can affect water quality:

  • Geographic location
  • Hydrogeology
  • Topography
  • Type, duration, and intensity of precipitation events
  • Extent of impervious surfaces (e.g., concrete or asphalt)
  • Type of ground cover (e.g., vegetation, crushed stone, or dirt)
  • Size of the operation



This site focuses or refers to information and services regarding Non Detect Qualified Industrial Storm water Practitioner (QISP) Third Party Environmental Group (TPEG) Storm Water Systems (SWS) Clean Water Act (CWA) Stormwater Benchmarks Storm Wattles Structural Controls North American Industrial Classification System (NAICS) Standard Industrial Classification (SIC) Erosion Control BMPs Waste Discharge Identification Number (WDID) Non-Governmental Organization (NGO) Sediment Natural Background Notice of Non Applicability (NONA) Water Quality Standards pH Chain of Custody Non Storm Water Discharges (NSWD) Storm wattle Qualifying Storm Event (QSE) Storm Water Discharge Associated with Industrial Activity Method Detection Limit Division of Water Quality (DWQ) Ontario Industrial Storm wattles Industrial Materials Minimum Level Operator Stormwater Discharge Points Total Suspended Solids (TSS) Numeric Action Level (NAL) Water Quality Based Effluent Limitation (WQBEL) Southern California New Source Performance Standards (NSPS) Total Maximum Daily Load (TMDL) Runoff Control BMPs Total Dissolved Solids (TDS) Source Straw Wattles Plastic Materials Water Quality Objectives No Exposure Certification (NEC) Trade Secret Run-on Stormwater Guarantee Waters of the United States Sedimentation Best Practicable Control Technology Currently Available (BPT) Exceedance Response Action (ERA) Effective Date New Source Performance Standards Oil and Grease (O&G) Stormwater Permit Flocculant Socks Total Organic Carbon (TOC) Biochemical Oxygen Demand (BOD) Monitoring Implementation Plan Regional Water Board Scrap Metal Permit Debris Effluent Wattle State Water Resources Control Board (SWRCB) Third Party Environmental Lawsuit (TPEL) Non stormwater New Discharge(r) Multi Sector General Permit (MSGP) Quality Assurance/Quality Control (QA/QC) Discharger Toxicity Storm Water Pollution Prevention Plan (SWPPP) Drainage Area Numeric Effluent Limitation (NEL) Good Housekeeping BMPs Numeric Action Level (NAL) Exceedance New Industrial General Permit Erosion Wattles Field Measurements Northern California Legally Responsible Person (LRP) Monitoring Requirements Effluent Limitation Turbidity Technology Based Effluent Limitation (TBEL) United States Environmental Protection Agency (U.S. EPA) National Pollutant Discharge Elimination System (NPDES) Scheduled Facility Operating Hours Notice of Intent (NOI) Best Management Practices (BMP) Municipal Separate Storm Sewer System (MS4) Storm Water Multiple Application and Report Tracking System (SMARTS) Effluent Limitations Guidelines (ELGs) Detected Not Quantifiable State water Board Stormwater Industrial General Permit (IGP) Sheet Flow Permit Registration Documents (PRDs) Sediment Control BMPs Best Available Technology Economically Achievable (BAT) Facility Stormwater Drainage Areas of Special Biological Significance (ASBS) Notice of Termination (NOT) Best Conventional Pollutant Control Technology (BCT) and more.

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Do businesses with sic code 3421 need a stormwater permit to comply with NPDES? Learn More.

Stormwater Permits for SIC Codes:


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