Protection of environment. Part98:Mandatory greenhouse gas reporting. Subpart NN:Suppliers of Natural Gas and Natural Gas Liquids. Section98.405:Procedures for estimating missing data.
(a) Whenever a quality-assured value of the quantity of natural gas liquids or natural gas supplied during any period is unavailable (e.g., if a flow meter malfunctions), a substitute data value for the missing quantity measurement must be used in the calculations according to paragraphs (b) and (c) of this section.