Storage Tank Emissions Calculation Tool

< back to Air Permits

DEQ has developed a tool for estimating emissions from working and breathing losses from volatile organic liquid storage tanks. The tool is based off EPA’s updated AP-42 calculation method, which also replaces the outdated TANKS emissions estimation software. The new AP-42 method corrects errors for more accurate estimates.

You may use the tool below or download it as a standalone .zip file. The tool opens in a compatible browser but does not require an internet connection. This first release of the tool only includes calculations for fixed roof and horizontal tanks. Floating roof tanks, landing, and cleaning calculations will be addressed in a future release. For any questions or comments, please contact Richard Kienlen / Phillip Fielder.