Stormwater BMPs for SIC Code 4121, Stormwater Permitting Guide
SIC Code 4121
2026 Stormwater Permit Compliance for SIC Code 4121 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 Wattles Total Dissolved Solids (TDS) Stormwater Permit New Industrial General Permit Water Quality Based Effluent Limitation (WQBEL) Storm Water Discharge Associated with Industrial Activity Best Conventional Pollutant Control Technology (BCT) Legally Responsible Person (LRP) National Pollutant Discharge Elimination System (NPDES) Notice of Non Applicability (NONA) Exceedance Response Action (ERA) Industrial Storm wattles Stormwater Drainage Northern California Stormwater Benchmarks Waters of the United States New Discharge(r) Structural Controls Numeric Action Level (NAL) pH Non stormwater Sediment Control BMPs Numeric Action Level (NAL) Exceedance Monitoring Requirements Detected Not Quantifiable Source Quality Assurance/Quality Control (QA/QC) Numeric Effluent Limitation (NEL) Non-Governmental Organization (NGO) Facility Run-on Storm Water Multiple Application and Report Tracking System (SMARTS) Erosion Non Detect Stormwater Discharge Points Regional Water Board Biochemical Oxygen Demand (BOD) Sediment Flocculant Socks Storm Water Systems (SWS) Clean Water Act (CWA) Non Storm Water Discharges (NSWD) Industrial General Permit (IGP) Storm Wattles Notice of Intent (NOI) Sedimentation Wattle Qualified Industrial Storm water Practitioner (QISP) Erosion Control BMPs Drainage Area Storm wattle Effluent Limitation Effluent Method Detection Limit Industrial Materials Total Suspended Solids (TSS) Debris Turbidity Multi Sector General Permit (MSGP) Total Organic Carbon (TOC) Oil and Grease (O&G) Total Maximum Daily Load (TMDL) Runoff Control BMPs Natural Background Third Party Environmental Lawsuit (TPEL) Qualifying Storm Event (QSE) Best Management Practices (BMP) New Source Performance Standards Monitoring Implementation Plan Permit Registration Documents (PRDs) Effluent Limitations Guidelines (ELGs) No Exposure Certification (NEC) Municipal Separate Storm Sewer System (MS4) Division of Water Quality (DWQ) Toxicity Chain of Custody State water Board Stormwater Scrap Metal Permit Trade Secret Discharger Notice of Termination (NOT) State Water Resources Control Board (SWRCB) Standard Industrial Classification (SIC) Water Quality Objectives Stormwater Guarantee Water Quality Standards United States Environmental Protection Agency (U.S. EPA) Minimum Level Good Housekeeping BMPs Southern California Scheduled Facility Operating Hours Operator Field Measurements Storm Water Pollution Prevention Plan (SWPPP) Waste Discharge Identification Number (WDID) Straw Wattles North American Industrial Classification System (NAICS) Effective Date Areas of Special Biological Significance (ASBS) Best Practicable Control Technology Currently Available (BPT) New Source Performance Standards (NSPS) Best Available Technology Economically Achievable (BAT) Sheet Flow Technology Based Effluent Limitation (TBEL) Third Party Environmental Group (TPEG) Ontario Plastic Materials and more.
In addition, stormwater hazardous materials business plan california stormwater observation report united states health and safety consultation stormwater benchmarks stormwater environmental stormwater mechanical filtration plastic inlet filter oil solidifying pillows stormwater compliance audit stormwater expert consultation stormwater sand filters non-stormwater observation stormwater safety inspection plan stormwater regulations california stormwater vessels stormwater sampling california industrial wattle stormwater treatment stormwater osha stormwater discharge oil solidifying booms stormwater quarterly observation stormwater consultant stormwater osha safety and health inspection stormwater runoff sampling stormwater news california non-stormwater observation report stormwater rain information stormwater filtration media stormwater oil sheen sock stormwater annual report stormwater hmbp california stormwater plan of action stormwater regulations penalties stormwater expert witness california stormwater management services stormwater record keeping environmental management swppp stormwater engineer services and more.
Do businesses with sic code 4121 need a stormwater permit to comply with NPDES? Learn More.
Disclaimer: Informational and educational purposes. Self-help services (not legal advice). Site is not affiliated with any state agency. Note that site might not contain the most updated information. Your receipt of any information from this site does not create a relationship. Prior results do not guarantee or suggest a similar result in other matters. No promise is made with regard to services or content's reliability, availabilty, or ability to meet any needs. Information and services provided "AS IS."