stormwater bmps for SIC Code 2421

Stormwater BMPs for SIC Code 2421, Stormwater Permitting Guide

SIC Code 2421


2026 Stormwater Permit Compliance for SIC Code 2421 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 No Exposure Certification (NEC) Water Quality Based Effluent Limitation (WQBEL) State water Board Stormwater Minimum Level Field Measurements New Industrial General Permit Plastic Materials Water Quality Objectives Clean Water Act (CWA) Effluent Limitations Guidelines (ELGs) Source Numeric Action Level (NAL) Water Quality Standards Storm Water Discharge Associated with Industrial Activity Third Party Environmental Group (TPEG) Runoff Control BMPs Non Detect Notice of Non Applicability (NONA) Municipal Separate Storm Sewer System (MS4) Run-on Exceedance Response Action (ERA) Industrial Storm wattles Standard Industrial Classification (SIC) Stormwater Drainage Non Storm Water Discharges (NSWD) Total Maximum Daily Load (TMDL) Oil and Grease (O&G) Division of Water Quality (DWQ) Storm wattle Total Organic Carbon (TOC) Chain of Custody Wattle Third Party Environmental Lawsuit (TPEL) Northern California Natural Background Regional Water Board United States Environmental Protection Agency (U.S. EPA) Method Detection Limit Storm Water Pollution Prevention Plan (SWPPP) Erosion Storm Wattles Storm Water Multiple Application and Report Tracking System (SMARTS) Flocculant Socks Numeric Action Level (NAL) Exceedance Areas of Special Biological Significance (ASBS) Best Available Technology Economically Achievable (BAT) Operator Numeric Effluent Limitation (NEL) Non stormwater Good Housekeeping BMPs Industrial Materials Detected Not Quantifiable Stormwater Benchmarks Multi Sector General Permit (MSGP) Ontario Waste Discharge Identification Number (WDID) New Source Performance Standards (NSPS) North American Industrial Classification System (NAICS) Notice of Intent (NOI) Sediment Total Suspended Solids (TSS) Quality Assurance/Quality Control (QA/QC) Notice of Termination (NOT) Non-Governmental Organization (NGO) Effluent Qualifying Storm Event (QSE) Waters of the United States Industrial General Permit (IGP) Structural Controls Best Practicable Control Technology Currently Available (BPT) Discharger New Source Performance Standards Stormwater Guarantee Technology Based Effluent Limitation (TBEL) State Water Resources Control Board (SWRCB) Scrap Metal Permit Storm Water Systems (SWS) Drainage Area Debris Straw Wattles Facility Permit Registration Documents (PRDs) pH National Pollutant Discharge Elimination System (NPDES) Effluent Limitation Stormwater Discharge Points Total Dissolved Solids (TDS) Sediment Control BMPs Turbidity Monitoring Implementation Plan Best Management Practices (BMP) Monitoring Requirements Erosion Control BMPs New Discharge(r) Biochemical Oxygen Demand (BOD) Sheet Flow Best Conventional Pollutant Control Technology (BCT) Trade Secret Southern California Qualified Industrial Storm water Practitioner (QISP) Legally Responsible Person (LRP) Wattles Stormwater Permit Toxicity Sedimentation Effective Date Scheduled Facility Operating Hours and more.

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Do businesses with sic code 2421 need a stormwater permit to comply with NPDES? Learn More.

Stormwater Permits for SIC Codes:


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