Stormwater BMP Installation, Maintenance, and Inspection Services in Louisiana
Louisiana's stormwater regulatory framework is administered by the Louisiana Department of Environmental Quality (LDEQ) under the Louisiana Pollutant Discharge Elimination System (LPDES). A notable distinction from most other states is Louisiana's large construction permit threshold: LDEQ's General Permit LAR100000 applies to construction activities disturbing five or more acres, compared to the one-acre standard used in most other states. Smaller construction sites that fall below this threshold do not require LPDES permit coverage, though post-construction BMP maintenance obligations can still apply through local MS4 programs. Louisiana's coastal geography, wetland-adjacent development patterns, and sensitivity around discharge to coastal water bodies create specific compliance considerations not found in inland states. Exact Stormwater Management provides stormwater BMP installation, maintenance, and inspection services across Louisiana.
Regulatory Context
Louisiana's stormwater construction permit program is administered by LDEQ under the LPDES General Permit LAR100000. The five-acre disturbance threshold that triggers mandatory LPDES permit coverage is the most significant regulatory distinction in Louisiana's stormwater framework. Sites disturbing between one and five acres may not require state permit coverage, though local MS4 programs may impose permit requirements in certain jurisdictions. Post-construction BMP maintenance obligations in Louisiana are implemented through local MS4 programs and vary by municipality and parish. Louisiana's coastal geography creates specific compliance considerations around discharge to sensitive coastal water bodies, wetland-adjacent detention systems, and development in low-lying areas with limited drainage capacity. Property owners and contractors operating near Louisiana's extensive wetland systems should be familiar with both LDEQ permit requirements and applicable Section 404 and coastal management rules that may affect stormwater BMP design and maintenance. Exact provides installation, maintenance, and inspection services that address LDEQ requirements and local MS4 post-construction obligations throughout Louisiana.
Need a certified stormwater inspection or maintenance plan in Louisiana? Call (804) 302-5151 or contact us to request a quote.
Who We Serve in Louisiana
Exact serves commercial property owners, HOAs, general contractors, municipalities, and land developers across Louisiana. Our clients include commercial property owners managing post-construction BMPs under local MS4 programs, construction contractors working under LDEQ LPDES permit coverage, coastal developers with discharge sensitivity concerns, and municipalities seeking qualified stormwater inspection and maintenance providers. We serve clients in the New Orleans metro, Baton Rouge, and throughout Louisiana.
Frequently Asked Questions: Louisiana Stormwater BMP Services
What is the Louisiana stormwater permit disturbance threshold?
Louisiana's LPDES General Permit LAR100000, administered by LDEQ, applies to construction activities disturbing five or more acres. This five-acre threshold is notably higher than the one-acre standard used in most other states, including neighboring Texas, Mississippi, and Tennessee. Construction sites disturbing between one and five acres may not require LDEQ LPDES permit coverage, though local MS4 programs may impose permit requirements in certain Louisiana jurisdictions. Post-construction BMP maintenance obligations can apply regardless of the construction permit threshold.
Who inspects stormwater BMPs in Louisiana?
Post-construction stormwater BMP inspections in Louisiana are governed by local MS4 programs, which establish their own requirements for inspection personnel and documentation. Because Louisiana's post-construction compliance framework varies by parish and municipality, property owners should confirm the specific requirements of their local MS4 program. Exact Stormwater Management provides BMP inspection and maintenance services throughout Louisiana. Call (804) 302-5151 to schedule an inspection or discuss a maintenance program for your Louisiana property.
What are the stormwater compliance considerations for coastal Louisiana development?
Coastal Louisiana development faces specific stormwater compliance considerations related to discharge to sensitive coastal water bodies, wetland-adjacent BMP design, and development in low-lying areas with limited drainage capacity. In addition to LDEQ LPDES requirements, coastal projects may be subject to Louisiana's coastal management program and federal Section 404 permitting for activities that affect wetlands. Property owners and contractors in coastal Louisiana parishes should verify all applicable state and federal compliance obligations before beginning construction or modifying existing stormwater systems.
What stormwater installation and maintenance services are available in Louisiana?
Exact Stormwater Management provides stormwater BMP installation, inspection, annual maintenance programs, erosion control, geomembrane liner installation, permeable pavement, pond management through our Aquatics Group, and green infrastructure throughout Louisiana. Our services address LDEQ LPDES permit requirements and local MS4 post-construction obligations. Contact (804) 302-5151 to discuss your Louisiana stormwater compliance needs.
How do local MS4 programs affect stormwater compliance in Louisiana?
Post-construction stormwater BMP maintenance in Louisiana is implemented primarily through local MS4 programs at the parish and municipal level. Louisiana's state-level LDEQ program focuses on construction permit coverage for sites disturbing five or more acres, leaving post-construction maintenance obligations to be established locally. This means compliance requirements for property owners managing detention ponds or other BMPs can vary significantly between New Orleans, Baton Rouge, Shreveport, and smaller Louisiana jurisdictions. Confirming local requirements is an essential first step for any Louisiana property owner with stormwater compliance obligations.
Exact Stormwater Management serves property managers, HOAs, developers, and contractors across Louisiana. Contact us today to discuss your stormwater compliance needs.
Corey Simonpietri
804-627-2942
corey@exactstorm.com
SPECIALTY INSTALLATIONS
• Geomembrane / Liner
• Underground Detention
• Permeable Pavement
• Green Infrastructure
• Bioretention
core areas:
With millions of cubic feet of underground detention installed, Exact Stormwater Management is your go-to partner to ensure proper installation of your detention system. We make sure the system is installed correctly, and can help navigate around common pitfalls. We install every system out there, including arched chambers (ADS’ StormTech and Cultec’s Recharger), modular box systems (Ferguons’s R-Tank, Brentwood’s StormTank, and ACO’s StormBrixx), and concrete vaults (StormTrap and StormCapture).
Underground Detention - More Info
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
INSTALLATION: Bioretention Facility, Biofilter, Dry Swale
Bioretention systems, biofilters, rain gardens, dry swales, compost amended grass swales, and many other variations of a semi-natural stormwater filter all serve to clean stormwater before it enters our streams. We specialize in proper installation of these systems - the right materials in the right arrangement at the right time - to make sure the system works as designed.
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
INSTALLATION: GREEN INFRASTRUCTURE
Green Infrastructure refers to a strategic approach that utilizes natural processes and systems to manage stormwater, enhance urban environments, and improve overall ecosystem health. This method emphasizes the preservation and restoration of natural landscapes while integrating them into urban design. Interventions such as rain gardens, permeable pavement, and bioswales work collectively to absorb, infiltrate, and filter stormwater runoff, reducing flooding risks and pollutant discharge into waterways.
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
We install many types of impermeable liners in the Southeast. Liners are typically 30 mil PVC, HDPE, LDPE, RPP, RPE, XR-5, and many other types of liner for the best fit for your application. With personnel in the liner business since 1992, we are the go-to company for liner installations. Underground Detention - More Info
Contact
Corey Simonpietri
804-627-2942
corey@exactstorm.com
INSTALLATION: Permeable Pavement
Permeable pavements are alternative paving surfaces that allow stormwater runoff to filter through voids in the pavement surface into an underlying stone reservoir, where it is temporarily stored and/or infiltrated. We install many types of permeable pavements from grass pavers to concrete brick-type pavers.
Example Installation of Permeable Pavers