Our tanks aren't just compliant — they're certified by the same independent organizations that US installers, regulators, and insurance companies require. Every tank ships with documentation.
UL (Underwriters Laboratories) listing is the baseline requirement for underground storage tanks in the United States. Our manufacturer's UL listings are confirmed and active.
The primary certification for underground steel storage tanks in the United States. Our inner steel tank (ASTM A-36 carbon steel) is manufactured and tested to UL 58 standards, covering structural integrity, pressure testing, and material requirements.
Covers the high-density polyethylene (HDPE) secondary jacket surrounding the steel primary tank. This double-wall design prevents soil corrosion of the steel inner tank — a key EPA requirement since 1998. Our HDPE jacket is dielectric, non-corrosive, and 360° air-pressure testable, providing a fully defined annular space for leak monitoring.
Beyond the tank-specific UL listings, our manufacturer holds the highest-tier quality certifications for oil & gas fabrication.
American Petroleum Institute quality management specification for design, manufacture, assembly, inspection, and delivery of welded tanks for the oil and gas industry. The gold standard for petroleum equipment manufacturing.
International quality management system standard. Covers design, manufacture, assembly, inspection, and delivery with documented processes, continuous improvement, and third-party annual audits.
API License for welded steel plate tanks — fabricated steel plates and shop-built tanks per Appendix J. Demonstrates highest-grade welding and fabrication processes under API oversight.
Member of PEI — the leading US association representing manufacturers and distributors of petroleum marketing equipment. PEI membership signals compliance with installation and operational best practices.
Affiliated with STI — the Steel Tank Institute, which develops the industry standards referenced in EPA 40 CFR Part 280. STI certifications are the benchmark US tank installers and regulators recognize.
Independent third-party testing and validation. SwRI is a leading non-profit research organization that performs independent safety and performance testing on petroleum storage equipment.
All Stealth Tanks USTs meet or exceed EPA federal underground storage tank regulations (40 CFR Part 280), including the 2015 updates requiring secondary containment, release detection, and corrosion protection. Our double-wall steel/HDPE construction satisfies all federal UST performance standards.
We can provide full UL listing certificates, API certification copies, and manufacturer documentation for your permit applications and TCEQ filings.
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