Electrical T ransmission and SEPA Distribution Equipment Use United States Environmental Protection Agency Subpart DD, Greenhouse Gas Reporting Program What Must Be Monitoredfor Users of Electrical Transmission and Distribution Equipment Insulated with Sulfur Hexafluoride (SF6) and/or Perfluorocarbons (PFCs)? Measure or estimate these parameters annually For use in measuring SF6 emissions using the mass-balance monitoring method (for measuring PFCs, "PFCs" should be substituted for "SF6" in the parameters below): ~ SF6 stored in containers, but not in energized equipment, at the beginning of the year (pounds) ~ SF6 stored in containers, but not in energized equipment, at the end of the year (pounds) ~ SF6 purchased in bulk from chemical producers or distributors (pounds) ~ SF6 purchased from equipment manufacturers or distributors with or inside equipment, including hermetically sealed-pressure equipment (pounds) ~ SF6 returned to facility after off-site recycling (pounds) ~ SF6 in bulk and contained in equipment that is sold to other entities (pounds) ~ SF6 returned to suppliers (pounds) ~ SF6 sent off-site for recycling (pounds) ~ SF6 sent off-site for destruction (pounds) ~ Nameplate capacity and the number of pieces of new equipment, hermetically sealed-pressure switchgear (pounds) ~ Nameplate capacity and the number of pieces of new equipment, other than hermetically sealed-pressure switchgear (pounds) ~ Nameplate capacity and the number of pieces of retired hermetically sealed-pressure equipment(pounds) ~ Nameplate capacity and the number of pieces of retired equipment other than hermetically sealed-pressure equipment(pounds) Supplementary information required for data reporting requirements ~ Total nameplate capacity (pounds) of equipment containing SF6 or PFC s existing at the beginning of the year (excluding hermetically sealed-pressure equipment) ~ Transmission miles (length of lines carrying voltages above 35 kV) ~ Distribution miles (length of lines carrying voltages at or below 35 kV) ~ States and territories in which the facility lies Electrical Transmission and Distribution Equipment Use Monitoring Checklist 40 CFR 98, subpart DD Greenhouse Gas Reporting Program February 2018 Page 1 of 2 ------- For more information, see the information sheet for Electrical Transmission and Distribution Equipment Use at: https://www.epa.gov/ghgreporting/electronic-transmission-and-distribution- infosheet. This document is provided solely for informational purposes. It does not provide legal advice, have legally binding effect, or expressly or implicitly create, expand, or limit any legal rights, obligations, responsibilities, expectations, or benefits in regard to any person. This information is intended to assist reporting facilities owners in understanding key provisions of the Greenhouse Gas Reporting Program Electrical Transmission and Distribution Equipment Use Monitoring Checklist 40 CFR 98, subpart DD Greenhouse Gas Reporting Program February 2018 Page 2 of 2 ------- |