Section 109.04 - Applicability to Existing Pipelines(1) The siting, design, and construction requirements of 220 CMR 109.00 shall not apply to any pipeline constructed before February 19, 1999.(2) Any pipeline constructed before February 19, 1999 shall comply with 220 CMR 109.07: Pipeline Location Marking and 220 CMR 109.13: Operations and Maintenance within 180 days of February 19, 1999.(3) Any pipeline constructed before January 1, 1971 with an MAOP of 275 psig or less shall not be uprated to an MAOP greater than 275 psig.(4) Any pipeline constructed on or after January 1, 1971, but before February 19, 1999, with an MAOP of 275 psig or less may be uprated to an MAOP greater than 275 psig if the pipe itself and all associated fittings and valves are suitable for the higher MAOP.Amended by Mass Register Issue 1432, eff. 12/11/2020.