Understanding the Texas Stormwater Pollution Prevention Plan (SWPPP) Requirements
- joeyruse
- Jan 5
- 3 min read
Updated: Jan 29
Understanding the Texas Stormwater Pollution Prevention Plan (SWPPP) Requirements
If you're involved in construction activities in Texas, understanding the requirements for a Stormwater Pollution Prevention Plan (SWPPP) is essential. A SWPPP ensures compliance with the Texas Commission on Environmental Quality (TCEQ) regulations to minimize water pollution from stormwater runoff. The requirements differ based on the size of the construction site, with distinct guidelines for sites under 5 acres and those disturbing 5 acres or more.
What Is an SWPPP?
An SWPPP is a comprehensive document that outlines measures to reduce pollution from stormwater runoff on construction sites. It identifies potential sources of pollution, describes practices or controls needed to minimize discharges, and includes specifications for maintaining these practices. The creation and compliance to a SWPPP narrative is necessary to obtain coverage under the Construction General Permit (CGP) TXR150000 issued by the TCEQ.
SWPPP Requirements for Sites Under 5 Acres
Construction sites that disturb less than 5 acres are classified as "small construction activities" and follow simplified requirements:
1. TCEQ Small Construction Site Notice (CSN): Small sites typically do not require filing aNotice of Intent (NOI) with TCEQ. Instead, operators can self-certify compliance by maintaining an SWPPP onsite, posting a TCEQ Small CSN at the Site, and turning in a signed copy of the CSN to the regulating MS4 Operator, usually the City or County that has jurisdiction of the project. A Low Rainfall Erosivity Waiver may also be applicable if the Rainfall Erosivity Factor (R-factor) is below a certain threshold during the construction period.
2. SWPPP Content: The SWPPP for small sites must include:
Site Description: Details about the project, including location, size, and soil type.
Erosion and Sediment Controls: A description of Best Management Practices (BMPs) like silt fences, wattles, or stabilized entrances (trackpads) to prevent soil erosion.
Good Housekeeping Practices: Steps to minimize pollutants like proper waste disposal and spill prevention measures & contingency actions.
Inspection Procedures: Regular inspections, at least once every two weeks or within 24 hours of a storm event greater than 0.5 inches.
Onsite SWPPP Maintenance: The SWPPP document must remain onsite and be readily available for TCEQ or MS4 Operator inspection.
SWPPP Requirements for Sites 5 Acres or More
Sites disturbing 5 acres or more fall under "large construction activities" and have more stringent requirements:
1. Notice of Intent (NOI): Operators must file an NOI with TCEQ using the online portal “STEERS” and pay a $225 application fee to obtain permit coverage.
2. SWPPP Content: The SWPPP for large sites includes:
Detailed Site Description: A map showing project boundaries, drainage patterns, and areas of soil disturbance.
Comprehensive BMPs: Erosion and sediment controls, stabilization measures, and stormwater controls such as sediment traps & ponds.
Post-Construction Measures: Long-term strategies to manage stormwater after construction, like vegetative buffers, drainage swales, retention basins, or underground detention systems.
Inspection and Reporting: Weekly inspections and documentation of BMP effectiveness. During rainfall events greater than ½ inch precipitation, inspections are required within 24 hours of rainfall completion.
Signage Requirements: Large sites must post signage with NOI information and the TCEQ Large CSN at a publicly accessible location.
Annual Reporting: Some large sites may require additional reporting to TCEQ after completion of construction, depending on the project’s complexity and impact.
Why Compliance Matters
Failing to implement an SWPPP or comply with TCEQ requirements can result in hefty fines, project delays, and environmental damage. Proper planning and adherence to regulations not only protect Texas’ waterways but also demonstrate a commitment to sustainable construction practices.
Final Thoughts
Whether your project disturbs less than 5 acres or spans a larger area, ensuring your SWPPP is comprehensive and compliant with TCEQ guidelines is essential. Understanding the specific requirements for your site size will streamline the permitting process and help you avoid potential delays and fines.
Contact the qualified stormwater compliance professionals at Eco Permit Pros today to ensure your SWPPP meets all regulatory requirements.
Or reach out directly at: info@ecopermitpros.com | (404) 858-8728