UST Compliance Testing & Verification

Independent Tank Tightness Testing — 0.1 GPH Precision

USTEX provides independent underground storage tank compliance testing under EPA 40 CFR Part 280 and Wisconsin ATCP 93. As WIDATCP Specialty Firm #560989, we conduct required testing with no repair conflicts — every result reflects objective system performance.

UST Compliance Testing Services

• Tank Tightness Testing — Precision volumetric testing at 0.1 GPH detection sensitivity. Meets EPA 40 CFR Part 280 periodic testing requirements for single and double-wall tank systems.
• Line Leak Detector Testing — Annual functional verification of mechanical and electronic line leak detectors at 3.0 GPH at 10 PSI per EPA 40 CFR §280.40.
• Cathodic Protection Evaluation — Assessment of impressed-current and sacrificial-anode systems for buried metallic tank and piping components.
• Overfill Prevention Verification — Functional testing of automatic shutoff devices and ball float valve systems per EPA 40 CFR §280.43.
• Spill Containment Inspection — Hydrostatic and visual assessment of spill catchment basins and fillport manholes for liquid-tight integrity.
• ATG System Verification — Automatic tank gauge console, probe, and sensor verification including leak alarm and overfill alarm functionality.

Regulatory Standards

EPA 40 CFR Part 280 • Wisconsin ATCP 93 • WIDATCP Specialty Firm #560989 • PEI RP100 • STI SP001

Annual vs. On-Demand Testing Programs

USTEX structures both scheduled annual compliance programs (line leak detector testing, triennial tank tightness, cathodic protection monitoring) and priority on-demand testing for facilities facing enforcement actions, failed tests, or DNR BRRTS case requirements.

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