EPA has issued final updates to its 2012 VOC performance standards for storage tanks used in crude oil and natural gas production and transmission. The updates will ensure the tanks likely to have the highest emissions are controlled first, while providing tank owners and operators time to purchase and install VOC controls. The amendments reflect recent information showing that more storage tanks will be coming on line than the agency originally estimated. All tanks subject to the New Source Performance Standards (NSPS) must control VOC emissions by 95% or meet the alternative emissions limits set forth by EPA. Storage tanks used in oil or natural gas production and transmission are subject to EPA’s 2012 New Source Performance Standards (NSPS) for VOCs if they have the potential to emit 6 or more tons of VOCs per year.  The Fact Sheet for the rule can be found here.