Texas SWPPP requirements apply to any construction project that disturbs at least one acre of land and to industrial facilities whose operations fall under certain Standard Industrial Classification codes. The Texas Commission on Environmental Quality administers these stormwater pollution prevention plans under the Texas Pollutant Discharge Elimination System, and the obligations run from before you break ground through final site stabilization.1Texas Commission on Environmental Quality. What Is the Texas Pollutant Discharge Elimination System (TPDES)? If you fit either category, you need a written plan on site, authorization under the correct general permit, a documented inspection routine, and a formal close-out when the work is done.
Who Needs a SWPPP in Texas
The Construction General Permit (TXR150000) covers two tiers. Large construction activities disturb five or more acres. Small construction activities disturb at least one acre but less than five.2Texas Commission on Environmental Quality. Stormwater General Permit for Construction Activities Both tiers require a SWPPP developed and implemented before any earth moves.
The acreage count is not just the dirt you personally touch. If your work is part of a “larger common plan of development or sale,” the full acreage of that plan is what counts. A developer who buys 20 acres, puts in roads and utilities, and sells half-acre lots to builders has created a common plan, and every builder on those lots needs permit coverage because the overall development exceeds the threshold.3Texas Commission on Environmental Quality. Storm Water – Common Plan of Development or Sale A plan can be established by an announcement, permit application, zoning request, public notice, sales advertisement, physical survey marking, or boundary sign indicating that construction may occur on a plot. Once the original development is fully built out and stabilized, later redevelopment on that parcel starts fresh with its own acreage calculation.
Industrial sites follow a different general permit. The Multi-Sector General Permit (TXR050000) covers 30 industrial sectors, from timber products and chemical manufacturing to metal mining, land transportation, food processing, and scrap recycling.4Texas Commission on Environmental Quality. Industrial Sectors Under the Industrial Multi-Sector General Permit If stormwater at your facility can contact manufacturing areas, material storage, or waste disposal, you likely need coverage.
What the Written Plan Must Contain
A Texas SWPPP is a living document. It must be developed before construction begins and updated whenever site conditions change. Three things sit at the core: what the site looks like, where pollutants could come from, and what you are doing to keep them out of waterways.
Site Description and Map
The plan opens with a description of the construction or industrial activity and the planned sequence of work. A site map has to show drainage patterns, soil types, slopes, discharge points into state waters, and the boundaries of areas you plan to disturb. Inspectors look here first, because a map that doesn’t match the ground is an immediate red flag.
Pollutant Sources
Identify every potential source of pollution. On construction sites that means exposed soil and stockpiles, fuel and chemical storage, concrete washout zones, equipment maintenance spots, and waste containers. The 2023 Construction General Permit prohibits discharging concrete truck washout water into any surface water, including storm drains. Washout must go into containment areas with berms, shallow pits, or temporary storage tanks that prevent runoff.5Texas Commission on Environmental Quality. 2023 Construction General Permit TXR150000
Best Management Practices
The plan has to spell out the Best Management Practices you’ll use to control erosion and trap sediment. Physical barriers like silt fences and stabilized construction entrances are the common ones, but the permit asks for more. You must minimize exposure of building materials, pesticides, fertilizers, and waste to precipitation. Waste container lids need to be closed at the end of each workday and during storms. Spill prevention and response procedures are required for any chemicals on site.5Texas Commission on Environmental Quality. 2023 Construction General Permit TXR150000 The TCEQ publishes SWPPP templates and forms through its Small Business and Local Government Assistance program.6Texas Commission on Environmental Quality. Forms and Tools
Getting Authorized Before You Break Ground
Large Construction and Industrial Sites
Large construction projects and industrial operations file a Notice of Intent electronically through the State of Texas Environmental Electronic Reporting System, known as STEERS.7Texas Commission on Environmental Quality. Submitting Stormwater General Permit Forms and Fees Electronically The authorization fee is $225, paid online by credit card or bank draft during the application.8Texas Commission on Environmental Quality. Assistance Tools for Construction Stormwater General Permits A legally authorized representative must digitally sign the submission. File at least seven days before any earth-moving begins. The TCEQ then issues an authorization number confirming the project is officially registered to discharge stormwater under the general permit, and you’ll need that number to pass most local municipal inspections during early phases.
Small Construction Sites
Small construction (one to five acres) is simpler. No Notice of Intent, no STEERS account, and no filing fee. Instead, the operator completes a Small Construction Site Notice (TCEQ Form 20963) and posts it at the construction entrance where the public can see it before work begins.9Texas Commission on Environmental Quality. Stormwater Discharges from Small Construction Activities – Site Notice Steps It stays posted until construction is complete. A separate form exists for small sites with a low potential for erosion.6Texas Commission on Environmental Quality. Forms and Tools
Some small sites qualify for a Low Rainfall Erosivity Waiver, which uses an erosivity factor calculation to identify construction with low potential to wash away soil.2Texas Commission on Environmental Quality. Stormwater General Permit for Construction Activities Worth checking if your project is small, on flat terrain, and scheduled during a dry season.
Inspection Schedules on Construction Sites
Inspections are where most violations happen. The 2023 Construction General Permit offers two schedule options, and your SWPPP must document which one you follow.
The default schedule requires a site inspection at least once every 14 calendar days, plus an added inspection within 24 hours of any storm that drops half an inch or more. If the 24-hour window falls entirely outside normal business hours, the inspection has to happen by the end of the next business day.5Texas Commission on Environmental Quality. 2023 Construction General Permit TXR150000
The alternative schedule requires inspections every seven calendar days regardless of rainfall. Under this option, you skip the post-storm trigger, but you cannot go more than a week between inspections.5Texas Commission on Environmental Quality. 2023 Construction General Permit TXR150000 You can switch schedules, but only once per calendar month, and the change must happen within the first five business days of that month.
Reduced frequencies apply in limited situations. Areas that have reached final or temporary stabilization only need monthly inspections. The same monthly frequency applies during frozen conditions and in arid or drought-affected areas, though a post-storm inspection is still required after any half-inch rainfall event in those areas.5Texas Commission on Environmental Quality. 2023 Construction General Permit TXR150000
The permit does not require a specific professional certification for inspectors. Personnel must be “knowledgeable” about the general permit, the construction activities at the site, and the SWPPP.5Texas Commission on Environmental Quality. 2023 Construction General Permit TXR150000 Inspector names and qualifications can be documented once in the SWPPP rather than repeated in every report.
Each inspection report must document the condition of every erosion and sediment control on the site, identify any needed repairs, and note any improvements made. Dewatering operations require a separate daily evaluation on every day that dewatering discharges occur. All inspection records, along with the current SWPPP, must be kept at the project site and available for immediate review by state or local officials.
Monitoring at Industrial Facilities
Industrial permit holders face monitoring obligations construction sites don’t. The Multi-Sector General Permit requires benchmark sampling once every six months for the first two years after permit coverage begins. If all those results come in below benchmark levels, the facility can request a waiver from sampling during years three and four. Every facility must also conduct quarterly visual examinations of stormwater discharges from each outfall and perform at least one comprehensive site compliance inspection per year.10Texas Commission on Environmental Quality. TPDES General Permit TXR050000 – Multi-Sector General Permit Results must be reported to the TCEQ by March 31 of the year following sample collection.
Keeping the Plan Current
Your SWPPP must be modified whenever site conditions change in a way that affects stormwater controls. New grading that alters drainage, additional pollutant sources brought on site, and controls that fail during a storm all require a plan update. If an inspection shows that existing BMPs aren’t working, the fix and the updated plan should happen quickly, not at the next scheduled review. An accurate change log is your main defense during an unannounced TCEQ audit. Inspectors look for the gap between what the plan says and what the site shows, and an outdated SWPPP is the easiest violation to write up.
Closing Out With a Notice of Termination
When construction wraps up, you can’t simply walk away. Operators must submit a Notice of Termination through STEERS once the site has been permanently stabilized or once control has been transferred to another permitted operator.2Texas Commission on Environmental Quality. Stormwater General Permit for Construction Activities Permanent stabilization generally means adequate vegetative cover or other permanent controls are in place across all previously disturbed areas so erosion is no longer a concern. Until you file that termination, you remain the responsible party for any discharge violation at the site, even if no workers have been there in months.
Penalties for Noncompliance
Texas Water Code Chapter 7 authorizes civil penalties from $50 to $25,000 for each violation and for each day a violation continues.11Texas Statutes. Texas Water Code Chapter 7 – Enforcement The math adds up fast. A missing SWPPP found during a week-long follow-up could generate penalties covering every day the site operated without one. The TCEQ weighs factors like the operator’s history of previous violations and the degree of environmental harm when setting amounts.
The most common violations are not dramatic spills. They’re documentation failures: an outdated site map, inspection reports that lack required detail, a SWPPP that doesn’t match the controls actually installed, or a Small Construction Site Notice that was never posted. Staying current on inspections, keeping your plan accurate, and filing termination when the job is done will keep you on the right side of the TCEQ.