Section 191.11 - Distribution system: Annual report(a)General. Except as provided in paragraph (b) of this section, each operator of a distribution pipeline system must submit an annual report for that system on DOT Form PHMSA F 7100.1-1. This report must be submitted each year, not later than March 15, for the preceding calendar year.(b)Not required. The annual report requirement in this section does not apply to a master meter system, a petroleum gas system that serves fewer than 100 customers from a single source, or an individual service line directly connected to a production pipeline or a gathering line other than a regulated gathering line as determined in § 192.8 . 75 FR 72905 , Nov. 26, 2010, as amended at 86 FR 2237 , Jan. 11, 2021 86 FR 2237 , 12834, 3/21/2021