A Louisiana car wash seller should trace washwater, sanitary wastewater and any treatment reject water separately, then document how the operation recovers from storms and utility interruptions. The LAG750000 general permit has facility-specific coverage and discharge conditions. A storm-related revenue explanation needs dates, repair records and any recoveries—not just a regional disaster headline.
In this market guide
Identify the covered outfalls and actual waste streams
LDEQ lists the exterior vehicle washwater general permit LAG750000 for April 26, 2024 through April 25, 2029. The permit covers eligible exterior wash activities and distinguishes washwater from sanitary and other specified discharges. Obtain the facility’s individual authorization and applicable schedules; the statewide permit text by itself does not establish coverage for a particular location.
A wash with reverse-osmosis reject water, water-softener wastewater or a sanitary stream should show where each goes and which conditions apply. A sewer-connected facility must also address the receiving system’s requirements. Do not use the direct-discharge general permit as proof of local sewer acceptance.
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| Question | Evidence | What a buyer needs to know |
|---|---|---|
| Which streams and outfalls are covered? | Drain plan, individual authorization and applicable schedules | The actual operation matches the discharge record. |
| What changes at the sale? | Operator/entity details and NOC-1 process where applicable | The responsibility and notification dates are understood. |
| Who maintains treatment? | Inspection, sampling, cleaning and repair records | The ongoing service and reporting costs can be reproduced. |
The permit requires an NOC-1 transfer request before or no later than 45 days after a covered facility change such as ownership or operator change. Coordinate the transaction with LDEQ in advance rather than treating the outside deadline as a reason to leave continuity unresolved. The permit distinguishes these changes from a simple contact-address update.
References: LDEQ: LPDES general permits · LDEQ: exterior vehicle washwater general permit LAG750000
Explain the full path from shutdown to normal service
NOAA’s Louisiana summary describes hot summers, year-round precipitation and substantial hurricane and flooding exposure, with different conditions between the coast and northern areas. This supports a careful site review. It does not determine the flood risk, insurability or future interruption time of an individual property.
Create an event timeline with shutdown preparation, power or water loss, access-road closure, physical damage, inspection, partial reopening and return to ordinary hours. Include how staffing and supplies were restored. A business can be structurally undamaged and still lose operating time because utilities or its entrance are unavailable.
For repaired systems, retain invoices, photos, warranties, inspection results and remaining work. Where insurance paid for some loss, reconcile the receipt with the expense and the books. Keep business equipment, landlord components and site drainage responsibilities separate so the buyer can see who owns unfinished obligations.
Illustrative earnings issue: the business reopens with one bay still unavailable. A monthly sales comparison alone hides that reduced capacity. Record which bays or tunnel functions were usable, hours of operation and actual visits. Do not annualize the strongest reopening week as a normal full-year run rate.
References: NOAA: Louisiana State Climate Summary 2022
Separate recurring customer access from temporary recovery traffic
Louisiana DOTD’s monitoring program supplies annual-average traffic, vehicle classification and related observations. Select the correct station, direction and year. A highway count can include vehicles that do not fit the wash or have no convenient route to its entrance.
If the historical period includes construction crews, cleanup activity or an unusual fleet engagement, identify that revenue separately and retain the agreement or invoices. Such work may be valuable, but its recurrence is a different question from the everyday membership base. Do not assume every temporary customer will continue under a new owner.
Review lawful turns, shared entrances, drainage across the approach and any documented road project. Ask who is responsible for access-road maintenance and what happens when the usual entrance is unavailable. A sales presentation should distinguish a current right from an informal practice or a proposed improvement.
References: Louisiana DOTD: traffic monitoring
Give the buyer a costed continuity plan
Louisiana had 213 employer establishments in the 2023 washing/detailing extract, thirty-first among states and DC. This historical concentration measure cannot establish current wash throughput, buyer demand or a premium for storm resilience.
A stronger seller file connects the current wastewater authorization, event and repair history, equipment maintenance, utility accounts and property responsibilities. Document any backup equipment’s actual capacity and service history rather than describing the property as outage-proof. Obtain transaction-specific insurance and professional reviews when evaluating the buyer’s future costs.
- Match each material wastewater stream to its approved route.
- Plan ownership/operator reporting for the applicable permit.
- Reconcile closures, partial capacity, repairs and recoveries.
- Separate ongoing customer earnings from temporary recovery work.
References: Census: 2023 County Business Patterns datasets
Owner questions
Does LAG750000 cover every Louisiana car wash automatically?
No. Confirm the facility’s authorization, discharge route and applicable conditions. Sewer acceptance and other operating approvals are separate questions.
Should all hurricane-related costs be removed from earnings?
No automatic adjustment is appropriate. Reconcile the expense, any recovery, repair versus improvement and whether the buyer will continue to bear similar operating costs.
Sources and scope
Official sources support the local facts and agency responsibilities described above. The preparation steps are our educational analysis; they do not establish a parcel-level approval, valuation or professional opinion. Recorded source-check dates are shown where available.
- LDEQ: LPDES general permits
Lists LAG750000 exterior vehicle washwater effective April 26, 2024 through April 25, 2029. Individual authorization and discharge schedules remain necessary.
Source checked
- LDEQ: exterior vehicle washwater general permit LAG750000
2024 reissuance covers eligible exterior wash discharges, separate waste streams and NOC-1 ownership/operator changes. Applies to covered discharges, not blanket municipal sewer approval.
Source checked
- NOAA: Louisiana State Climate Summary 2022
Historical regional climate context from the 2022 publication. Not current weather, parcel exposure, a revenue forecast or current water restrictions.
Source checked
- Louisiana DOTD: traffic monitoring
AADT, vehicle classification and weight on public roads; station/time and entrance access must match the property.
Source checked
- Census: 2023 County Business Patterns datasets
2023 employer-establishment counts, NAICS 811192, all legal forms. This is business concentration, not vehicle throughput, a list of sale prospects or current buyer demand.
Source checked