A Smarter Approach to Tank Inspections: What Engineers Should Know
By Sam Horstmann, Vice President, Mass Tank Inspection Services Storage tanks are a critical part of infrastructure across countless industries—water treatment, fuel distribution, agriculture, chemical processing, and beyond. Whether fabricated from steel,...
NYSDEC Issues Revised Program Policy DER-40
Did you know that NYSDEC recently updated Program Policy DER-40? On April 14, 2025, New York State Department of Environmental Conservation (NYSDEC) Division of Environmental Remediation (DER)-40, which provides guidance regarding the regulatory requirements under 6...
NYSDEC Issues Revised Program Policy DER-12
Did you know that NYSDEC recently updated Program Policy DER-12? New York State Department of Environmental Conservation (NYSDEC) Division of Environmental Remediation (DER)-12, which provides guidance regarding the regulatory requirements under 6 New York Codes,...
Understanding DER-25: Key Updates and What They Mean for PBS Facilities
What Is DER-25? This policy was first issued April 20, 2011, in New York State. It applies to petroleum bulk storage (PBS) facilities, including both underground (UST) and aboveground (AST) tanks, ensuring compliance with ECL Article 17, Title 10 (state law), 6 NYCRR...
Connecticut’s Newest Underground Storage Tank Proposal
At the time of conception of underground storage tanks (USTs), inventory losses were the lone inspiration for tank regulation. The year 1984 marked a shift in focus from financial losses to environmental and health protection; the Subtitle I RCRA amendments developed...
NYSDEC Releases Revised Petroleum and Chemical Bulk Storage Regulations
The New York State Department of Environmental Conservation (DEC) announced it adopted revised petroleum bulk storage (PBS) and chemical bulk storage (CBS) regulations in June 2023. The primary goal of these revisions is to make the language between existing federal...
Walden Removes a Gasoline Underground Storage Tank
Walden Environmental Engineering recently completed a project for the Town of Hempstead, Department of Parks & Recreation. The work, which took place at Market Lane Garage (“Site”), called for the removal of an old gasoline underground storage tank (“UST”) in...
Six Things to Know If You Uncover an Underground Storage Tank at Your Site
Did you find an Underground Storage Tank (UST) at your construction site? Don’t panic! While you may think uncovering a UST can lead to delays in your construction schedule, planning ahead and knowing what to do in the situation will simplify things. Check out these...
THE NYSDEC PROPOSES INCREASED REGULATION FOR BURNING WASTE OILS IN NEW YORK STATE
Proposed Subpart 225-2, Fuel Composition and Use - Waste Oils The Department is proposing to repeal 6 NYCRR Part 225-2 Fuel Composition and Use - Waste Fuel and replace it with 6 NYCRR Subpart 225-2, Fuel Composition and Use - Waste Oils. The proposed revisions to...
The Benefits of Using the Same Engineering Company for Tank Design, installation oversight, and As-Builts.
Throughout Walden’s existence, some of the most common jobs have involved tanks. Walden is often hired to perform many different jobs related to tanks but there are three types of jobs which many of our clients do not know are directly related. These are the design,...