If your tank sits in the Houston-Galveston-Brazoria or Beaumont-Port Arthur area, or the Dallas-Fort Worth area, and held a volatile organic compound, TCEQ regulates how you degas it. This page states the rule in plain language, then explains how a water-based vapor-suppressing chemical reduces the vapor you have to control. Hasten supplies the chemical; your vapor-control contractor and your permit still run the job.
Bring your LEL meter to the demo. Response within one business day.
| Item | What 30 TAC 115, Subchapter F, Division 3 says |
|---|---|
| Where it applies | Houston-Galveston-Brazoria counties (Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery, Waller), Beaumont-Port Arthur (Hardin, Jefferson, Orange), and Dallas-Fort Worth; El Paso on contingency |
| Which tanks | Storage tanks, transport vessels, and marine vessels that held VOC with a true vapor pressure above 0.5 psia |
| Control requirement | Route all vapors to a control device of at least 90 percent efficiency until the vapor space is below 34,000 ppmv as methane or 50 percent of the lower explosive limit |
| Then | Vapors may be vented uncontrolled, and the tank must reach below 6,800 ppmv or 10 percent LEL |
| Who enforces | TCEQ; the rule text is at 30 TAC 115.541 to 115.549 |
This is a plain-language summary for planning. The rule text and your permit govern. Read the section before you rely on it.
Flammable vapor comes off the liquid hydrocarbon left in a tank. Ventilation dilutes the vapor. Hasten Cleanse goes after the source.
Surfactants and fatty acids attach to the residue and the free product on walls, floor, and in sludge.
Bound hydrocarbon vaporizes more slowly. Less vapor is generated in the first place, so LEL and VOC readings fall rather than being blown out.
The same wash that suppresses vapor lifts the residue into a water suspension for the vac truck. Cleaning and degassing happen together.
Water-based, no flash point. Nothing in the tank got more dangerous because of the product.
Hasten Cleanse is not a control device and does not replace one. It lowers the vapor the device has to handle.
Less vapor generated means fewer hours to reach 50 percent LEL with the oxidizer or scrubber running.
Reaching 10 percent LEL for entry comes sooner because the residue is bonded and being removed, not sitting there off-gassing.
Your meter readings and your contractor's logs are the record. We add nothing to the paperwork.
It will not strip bonded solids, and it will not satisfy the rule by itself. It is a chemical, not a compliance program.
Half the people who look up tank degassing under TCEQ rules want someone to do the work. The other half want what the workers use. Hasten Cleanse is the second thing, and we can help with the first. We supply tank cleaning contractors, refinery turnaround crews, vapor control vendors, and plant maintenance departments across the Gulf Coast, and we ship the same concentrate to operators who run their own entry program.
Entry permits wait on LEL, benzene, and H2S readings. A water-based vapor suppressant that bonds to the hydrocarbon lets the readings fall without steaming the vessel for days. Turnaround planners order by the tote and stage it at the unit before the outage.
Transport tanks that switch products or go in for repair need the vapor knocked down before hot work. A 1 to 20 solution sprayed or circulated through the tank does it without a flammable solvent in the truck bay.
Pigging, flushing, and vessel entry all end with the same question, what are the readings. Hasten Cleanse goes in with the flush water and leaves a non-hazardous rinse that can go to the wastewater system.
Crews that clean crude, product, slop, and produced water tanks add Hasten Cleanse to their circulation or spray water so the vapor space comes down while the residue lifts. One product covers the degassing step and the cleaning step, which is why contractors carry it in totes rather than two separate chemicals.
Ask us. Our customers are the contractors who do this work along the Gulf Coast, and we know who covers which plants and which districts. If you have a crew already, they can buy the concentrate from us direct; one tote covers a lot of tank bottoms at 1 to 20.
Houston-Galveston-Brazoria, Beaumont-Port Arthur, and Dallas-Fort Worth.
No. The rule requires vapor control until the threshold. The product reduces vapor generation so control finishes sooner.
Control until below 34,000 ppmv as methane or 50 percent LEL; the tank must reach below 6,800 ppmv or 10 percent LEL. Read 30 TAC 115.542.
Houston-Galveston-Brazoria, Beaumont-Port Arthur, and Dallas-Fort Worth areas, with El Paso on contingency.
Yes, marine and transport vessels are included in the division.
No. Water-based, no flash point.
County, tank, and date. A quote and a demo with your meter, back within one business day.
Call 832-655-7763