Envent Corporation has cleared storage tanks, pressure vessels, reactors, and marine vessels for refineries, chemical plants, terminals, and midstream facilities across the United States and Canada since 1992. The company holds a 0.0 TRIR safety record and meets EPA BACT, MACT, and state air quality standards on every project. Project-level regulatory documentation, emissions data, and compliance certifications are all available on the Compliance section.
For Dallas-area facilities, all work runs under Texas Commission on Environmental Quality (TCEQ) Chapter 115 and applicable Title V permit conditions. Envent Corporation also meets air permit requirements set by the South Coast Air Quality Management District (SCAQMD) Rule 1149 and the Louisiana Department of Environmental Quality (LDEQ), which matters if your company operates facilities across Texas, California, or Louisiana. VOC and hazardous air pollutant destruction runs at 99.9%+ efficiency on every project.
” They provided timely communication and, with the support of their teams, contributed to a safe Turnaround. Their quick response to events helped us maintain our commitments to safety and the environment. I would not hesitate to recommend them to lead crews on other jobs.”
“They deliver exceptional performance, over and beyond our expectations contractually.”
Based on this experience, I am comfortable recommending Envent Corporation for any degassing, vapor control, or related services. Their technical capability and consistent performance make them a dependable service provider.
Envent Corporation completed their scope ahead of schedule and under budget. Their planning, resource management, and execution met the needs of the project.
Safety remained a consistent focus during the project. Envent Corporation’s approach to identifying and addressing potential risks contributed to a safe work environment for personnel.
Envent Corporation mobilized promptly and reached the required degas threshold within 18 hours of startup, prior to any tank washing or cleaning.
Envent Corporation demonstrated professionalism and provided reliable engineering and operational support throughout the job.
Envent Corporation handles vapor clearance for the full range of industrial storage tanks and process vessels at Dallas-area refineries, terminals, and chemical plants. Before any crew mobilizes to your facility, the engineering team reviews your vessel type, product history, internal configuration, and site access conditions to plan the work correctly. Every project is run to meet Texas Commission on Environmental Quality (TCEQ) air permit requirements and your maintenance schedule.
For marine-specific vapor control work at Dallas-area terminals and ports, Envent Corporation’s Marine Vapor Recovery service covers vessel degassing operations for crude oil tankers, product barges, and chemical parcel tankers across North America.
Vapor destruction on every Dallas-area project runs at 99.9%+ destruction removal efficiency on volatile organic compounds and hazardous air pollutants. All work meets EPA Best Available Control Technology (BACT) standards under 40 CFR Part 60 and Maximum Achievable Control Technology (MACT) requirements under 40 CFR Part 63. For facilities operating under a Title V permit in Texas, all emission destruction data is documented and formatted for TCEQ reporting requirements.
VOC AND HAP DESTRUCTION:
TYPICAL DEGASSING PERFORMANCE:
Actual project timelines vary based on product vapor pressure, ambient temperature, and residual heel volume
HIGH-THROUGHPUT PROJECT COVERAGE:
SPECIALIZED CAPABILITY: During rapid tank refilling operations at Dallas facilities, Envent Corporation runs continuous vapor destruction while product loading proceeds, at rates up to 20,000 barrels per hour. This removes the waiting period between degassing completion and refill initiation, keeping your turnaround on schedule. Planned outages and multi-vessel turnarounds at Dallas-area facilities are covered under Envent Corporation’s Refinery Turnaround Vapor Control service.
REAL-TIME MONITORING:
DOCUMENTATION DELIVERABLES:
Envent Corporation’s engineering team reviews federal, state, and local air quality requirements for your Dallas facility before any equipment arrives on site. Permit conditions are confirmed and a site-specific degassing plan is in place before mobilization, keeping your project clear of work delays, permit violations, and agency enforcement actions.
Envent Corporation covers compliance for:
Envent Corporation is a U.S. EPA Natural Gas STAR Partner, recognized for mobile vapor recovery technology used across refining, terminal, and chemical plant operations. For Dallas-area facilities, Envent Corporation deploys EMTOS and EMECS units to handle high-volume vapor streams from the most demanding industrial tank and vessel projects, including sour service, high-reactivity compounds, and multi-vessel refinery turnarounds.
Envent Corporation has handled tank degassing at Dallas-area facilities since 1992. Call 888-997-9465
With over 30 years of tank degassing experience across Dallas-area refineries, terminals, and chemical plants, call Envent Corporation at 888-997-9465 or Request a Quote to discuss your next project.
The Problem: A structural roof collapse on a gasoline storage tank released high levels of volatile organic compounds (VOCs). This created an immediate fire risk and potential community impact, requiring urgent stabilization to meet strict air quality rules.
What We Did: Envent deployed the EMTOS (Envent Mobile Thermal Oxidation System) within hours. We set up a custom vapor recovery line to pull hazardous gasses from the tank while maintaining safe internal pressure. Our crews provided 24/7 monitoring, achieving 99.99% destruction of all gasoline vapors.
The Result: The site was safely stabilized with zero safety incidents. Envent’s fast response guaranteed 100% compliance with environmental regulators and prevented hazardous odors from affecting the surrounding area.
Envent Corporation works on fixed-roof and floating-roof storage tanks, pressure vessels, process columns, reactors, LPG spheres, and railcar and truck loading equipment across Dallas-area refineries, terminals, and chemical plants. Each vessel type requires a different approach based on product history, internal configuration, and site access conditions, all of which are reviewed before mobilization. The full scope of vessel types Envent Corporation covers is listed on the Degassing and Vapor Control page.
All projects in Texas run in compliance with Texas Commission on Environmental Quality (TCEQ) Chapter 115 emission rules and applicable Title V or minor permit conditions. VOC and HAP destruction runs at 99.9%+ efficiency on every project, and all documentation is formatted to meet TCEQ reporting requirements before the project closes.
For vessels with heavy H2S content, wet scrubbers run ahead of the vapor destruction unit to protect crew and equipment before operations begin. All H2S management is reviewed and approved under the EPA Alternative Monitoring Plan (AMP), covering your facility’s permit conditions from the start. The full scope of H2S and sour gas handling is covered on the Scrubbers and Odor Control page.
Envent Corporation coordinates vapor control during planned turnarounds alongside shutdown planners, inspection crews, and hot work teams at Dallas-area refineries. Multi-vessel projects are handled under a single scope with coordinated scheduling, keeping your turnaround on track without separate contractor management. Full details are on the Refinery Turnaround Vapor Control page.
All field crews follow OSHA 29 CFR 1910.146 for permit-required confined space entry, along with facility-specific JSA requirements and hot work authorization procedures. Every crew member holds 40-hour HAZWOPER certification, H2S awareness training, and client-specific safety qualifications including ISNetworld, Avetta, and PEC SafeLand, which means your facility’s contractor qualification requirements are met before anyone sets foot on site. Envent Corporation’s full safety record is available at the Safety page.
Every project closes with a complete emissions monitoring package covering temperature logs, vapor flow totalization, destruction efficiency calculations, and regulatory compliance certification. All documentation is formatted for EPA, TCEQ, and local agency reporting requirements, so your permit file is complete without additional formatting work on your end.
When a tank contains contaminated water bottoms or process water that needs treatment before the vessel can be cleared, Envent Corporation’s mobile water treatment systems run as a parallel scope item on the same project. This removes the need to schedule a separate contractor for water treatment, keeping your maintenance window intact. The full scope of mobile water treatment is covered on the Water Treatment page.
The vapor stream composition, product type, tank dimensions, and your permit conditions all factor into the unit configuration selected for your project. Envent Corporation’s engineers review each of these before mobilization so the right equipment arrives on site the first time, without adjustments once work begins. Completed project examples are available at Our Work.
Envent Corporation works across the full North Texas region including terminals, pipeline facilities, and chemical plants throughout the corridor, not just within Dallas city limits. For Texas Gulf Coast projects, work is covered under the Texas Gulf Coast location page, and for pipeline-specific work across the region, the full scope is on the Pipeline Degassing page.
Envent Corporation has worked for ExxonMobil, Chevron, Shell, Phillips 66, Valero, Marathon, and other Tier-1 operators across Texas over more than 30 years of operation. These are facilities with strict contractor qualification standards, and Envent Corporation meets every one of them on every project. Client testimonials and completed project details are available at Our Work and the Compliance page.
Envent Corporation has handled tank degassing for refineries, terminals, and chemical plants across North Texas since 1992. Your project gets OQ-qualified crews, full regulatory documentation, and a 0.0 TRIR safety record on every scope.
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Hi, I’m Steve Sellinger, CEO of Envent Corporation. We make it our policy at Envent
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