Petroleum Compliance Services, LLC

05/29/2026

Our updated UST Compliance Testing Requirements document. Rules apply to Oregon sites.

05/18/2026

Our preferred utility locators!

04/28/2026

Video of an instant off measurement with the current interrupter cycling at 10 sec On and 2.5 sec Off. At the end of the 2.5 sec cycle the potential dips below -850 mV CSE to -847 mV CSE. I've read before that you wait about 2 seconds before recording the instant off potential. With my meter though you can see where the inflection point of the IR drop occurs and at that point you are just getting potential decay. My question: is the instant off potential -888 mV CSE or -847 mV CSE (which can be seen toward the bottom of the meter after I record the waveform)? And do you think this point meets the -850 mV CSE I/O criteria?

04/28/2026

Anode header splice with a 3M 90-B1N splice kit.

04/28/2026

04/17/2026

Here we see a, interesting, mechanical 'wedge' attachment of a anode to steel product pipe found during a system survey. Mechanical attachment points can develop high resistance over time due to the build up of corrosion products between the clamp/structure and should be avoided is possible. In the UST industry, mechanical attachment is common though because thermite welding on metal with an unknown thickness is dangerous and pin brazing has high initial tool costs. This leaves mechanical attachment as an economical and safe connection method for CP. The continuity of these connection types should be verified during inspections to ensure CP current is reaching the target structure.

04/12/2026

Why did the electron cross the road? Because there wasn't one on the other side.

03/14/2026

About a 2 hour video that explains most of the compliance testing that takes place at a UST facility.

Good information for anyone responsible for their site compliance.

"This introductory webinar provided by the Release Prevention Task Force covers a variety of inspection topics, including, spill buckets, containment, overfill, CP, ATGs, interstitial monitoring, and shear valves."

UST 101 Webinar Tanks, Underground Storage Tank Task Force, Webinars Published on November 10, 2025 This introductory webinar provided by the Release Prevention Task Force covers a variety of inspection topics, including, spill buckets, containment, overfill, CP, ATGs, interstitial monitoring, and s...

03/01/2026

Significant corrosion observed on a ATG riser.

02/05/2026

Oregon DEQ has released a new Tankline Bulletin for Jan 2026.