stormwater bmps for SIC Code 2121

Stormwater BMPs for SIC Code 2121, Stormwater Permitting Guide

SIC Code 2121


2026 Stormwater Permit Compliance for SIC Code 2121 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 United States Environmental Protection Agency (U.S. EPA) National Pollutant Discharge Elimination System (NPDES) Notice of Intent (NOI) State Water Resources Control Board (SWRCB) Turbidity Debris Qualified Industrial Storm water Practitioner (QISP) Effluent Limitation Storm Water Pollution Prevention Plan (SWPPP) Exceedance Response Action (ERA) Southern California Water Quality Objectives Best Management Practices (BMP) Notice of Non Applicability (NONA) Numeric Action Level (NAL) Total Dissolved Solids (TDS) Source Legally Responsible Person (LRP) Method Detection Limit Storm wattle Standard Industrial Classification (SIC) Stormwater Benchmarks Non-Governmental Organization (NGO) Total Maximum Daily Load (TMDL) Industrial Materials No Exposure Certification (NEC) Numeric Action Level (NAL) Exceedance Monitoring Implementation Plan Field Measurements Total Suspended Solids (TSS) Operator Qualifying Storm Event (QSE) Numeric Effluent Limitation (NEL) New Discharge(r) pH Storm Water Systems (SWS) Non stormwater Monitoring Requirements State water Board Stormwater Storm Water Discharge Associated with Industrial Activity Storm Water Multiple Application and Report Tracking System (SMARTS) Scrap Metal Permit Third Party Environmental Lawsuit (TPEL) Northern California Plastic Materials Stormwater Discharge Points Waste Discharge Identification Number (WDID) Sheet Flow Municipal Separate Storm Sewer System (MS4) Clean Water Act (CWA) Biochemical Oxygen Demand (BOD) Stormwater Permit New Source Performance Standards North American Industrial Classification System (NAICS) Toxicity Third Party Environmental Group (TPEG) Scheduled Facility Operating Hours Oil and Grease (O&G) Industrial Storm wattles Non Storm Water Discharges (NSWD) Minimum Level Sediment Facility Notice of Termination (NOT) New Industrial General Permit Total Organic Carbon (TOC) Sedimentation Detected Not Quantifiable Flocculant Socks Straw Wattles Non Detect New Source Performance Standards (NSPS) Wattle Sediment Control BMPs Stormwater Guarantee Best Practicable Control Technology Currently Available (BPT) Best Available Technology Economically Achievable (BAT) Erosion Control BMPs Quality Assurance/Quality Control (QA/QC) Industrial General Permit (IGP) Trade Secret Effective Date Stormwater Drainage Run-on Water Quality Standards Chain of Custody Effluent Best Conventional Pollutant Control Technology (BCT) Drainage Area Runoff Control BMPs Wattles Technology Based Effluent Limitation (TBEL) Structural Controls Permit Registration Documents (PRDs) Multi Sector General Permit (MSGP) Good Housekeeping BMPs Ontario Water Quality Based Effluent Limitation (WQBEL) Division of Water Quality (DWQ) Storm Wattles Effluent Limitations Guidelines (ELGs) Regional Water Board Waters of the United States Discharger Areas of Special Biological Significance (ASBS) Erosion Natural Background and more.

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Do businesses with sic code 2121 need a stormwater permit to comply with NPDES? Learn More.

Stormwater Permits for SIC Codes:


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