On January 2, 2015, MassDEP adopted a new Underground Storage Tank Regulation ("UST", 310 CMR80.00) that addresses design/construction/installation, registration, operation, maintenance and inspection ofUST systems used to store petroleum fuels and hazardous substances. These new rules have beendeveloped to implement M.G.L. c 21O, which was established by Section 7 of Chapter 4 of the Acts of 2009.This law also transferred regulation of most aspects of the Commonwealth's UST Program from theDepartment of Fire Services (DFS) to MassDEP. The new regulation maintains the basic requirementsestablished by DFS's regulation (527 CMR 9.00, which was rescinded on January 1, 2015) and by the U.S.Environmental Protection Agency. MassDEP has also updated and streamlined requirements designed toprotect groundwater from UST system leaks.310 CMR 80.00: New MassDEP Underground Storage Tank (UST) RegulationsFact Sheet: New MassDEP Underground Storage Tank (UST) RulesUnderground Storage Tank (UST)/Stage I & II Enforcement Discretion DirectiveMassDEP is giving the regulated community 120 days to learn about and implement the new requirements before the agency begins actively enforcing most provisions. This "grace period" runs through April 30, 2015. For more information about the MassDEP Underground Storage Tank Program:Visit MassDEP's web site for the final regulation, associated documents about implementation, anda schedule of MassDEP workshops about the new program:http://www.mass.gov/eea/agencies/massdep/toxics/ust/newregs.html• Call the UST/Stage I & II Hotline: 617-556-1035UST RegulationsUST ComplianceState Regulationstank regulationsUnderground Storage Tank Regulationssecondary containmentRegulationsMassachusettsMA UST RegulationsMA USTDispensersDecommissioningCompliance