Checked October 20, 2026 against the permit text published by Louisiana Department of Environmental Quality. Sources and sections are listed at the end of this page.
In Louisiana, construction stormwater coverage comes from LPDES Storm Water General Permits: LAR100000 (5+ acres) and LAR200000 (1-<5 acres) (permit no. LAR100000 / LAR200000), issued by Louisiana Department of Environmental Quality (LDEQ). It took effect LAR100000 October 1, 2024; LAR200000 August 25, 2023 and expires LAR100000 September 30, 2029; LAR200000 August 24, 2028.
At a glance
| Item | What the permit says |
|---|---|
| How coverage is obtained | Large: NOI (Form CSW-G) with prepaid fee (LAR100000 Part I.C). Small: no NOI; automatic coverage once the SWPPP is completed, signed and certified before work (LAR200000 Part II.G) |
| Agency fee | Large: $291 (1 yr), $582 (2), $873 (3), $1,164 (4), $1,455 (5) prepaid; small: no fee |
| Who may prepare the plan | No license or seal |
| Who inspects | Qualified personnel provided by the permittee |
| Inspection frequency | Every 7 days, or every 14 days before anticipated storms and within 24 h after 0.5 in (LAR100000 Part IV; LAR200000 Part III) |
| State forms and templates | LDEQ SWPPP templates at deq.louisiana.gov/page/storm-water-protection |
Points that are easy to miss
- Coverage ends automatically when the prepaid years run out: file an NOE 30 days before.
- Small sites: coverage starts only when the SWPPP is signed and work begins.
What a SWPPP Desk plan covers here
We prepare a site-specific plan written to LAR100000 / LAR200000, with each section mapped to the permit part it answers. You, the operator, review and sign it and keep it on site.
Checkout open in Louisiana. State ruling: Sell. The site check on the plan page applies these conditions before payment. See coverage.
What we do not do
- Our plans are not sealed or stamped. BMPs that need design calculations, such as sediment basins and post-construction practices, come from your design professional.
- The operator signs the plan and is responsible for it.
- We do not visit or inspect sites.
- We do not file the NOI or any permit application for you. We tell you which form and portal the permit names.
Sources
- Permit text: deq.louisiana.gov (LAR100000 Part I.C, Part IV; LAR200000 Part II.G, Part III). Checked 2026-10-20.
- Agency page: deq.louisiana.gov. Checked 2026-10-20.
SWPPP Desk is not affiliated with Louisiana Department of Environmental Quality. If a rule here has changed, write to support@swpppdesk.com and we will correct this page.