Section 80.47 - Standards for Cleaning and Closure(1) The Owner or Operator shall follow the applicable cleaning and closure procedures to comply with 310 CMR 80.41(4)(a), 80.42(4)(a) and 80.43(2)(a) and (3)(a)3.: (a) American Petroleum Institute (API) Recommended Practice 1604, 3rd Edition, March 1996 Closure of Underground Petroleum Storage Tanks, Sections 1, 3, and 4.1 through 4.5; and(b) United States Environmental Protection Agency standards for RCRA hazardous debris found at 40 CFR 268.45.Adopted by Mass Register Issue S1277, eff. 1/2/2015.Amended by Mass Register Issue 1453, eff. 10/1/2021.