United States Environmental Protection Agency Petroleum and Natural Gas Systems &EFA Monitoring Checklist for Natural Gas Distribution Final Rule: Mandatory Reporting of Greenhouse Gases (40 CFR Part 98) What must be monitored? If emissions are going to flares, need data elements under the source flare stacks (see Monitoring Checklist for Onshore Petroleum and Natural Gas Production). Record these parameters on an annual basis, unless specified otherwise. 1. Above Ground Meters and Regulators at Custody Transfer City Gate Stations ~ Number of custody transfer gate ~ Total number of meter runs at all above stations grade M&R city gate stations at custody transfer A. Connector Equipment Leaks Using Leak Detection ~ Operating time of leaking ~ Total number of components found leaking component (hours) ~ Report CO2 emissions from all ~ Report CH4 emissions from all connectors connectors (standard cubic feet) (standard cubic feet) B. Block Valve Equipment Leaks Using Leak Detection ~ Operating time of leaking ~ Total number of components found leaking component (hours) ~ Report C02 emissions from all ~ Report CH4 emissions from all block block valves (standard cubic feet) valves (standard cubic feet) C. Control Valve Equipment Leaks Using Leak Detection ~ Operating time of leaking ~ Total number of components found leaking component (hours) ~ Report CO2 emissions from all ~ Report CH4 emissions from all control control valves (standard cubic valves (standard cubic feet) feet) D. Pressure Relief Valve Equipment Leaks Using Leak Detection Petroleum and Natural Gas Monitoring Checklist Natural Gas Distribution 40 CFR 98, subpart W Page 1 of 3 September 2010 ------- ~ Operating time of leaking ~ Total number of components found leaking component (hours) ~ Report CO2 emissions from all ~ Report CH4 emissions from all pressure pressure relief valves (standard relief valves (standard cubic feet) cubic feet) E. Orifice Meter Equipment Leaks Using Leak Detection ~ Operating time of leaking ~ Total number of components found leaking component (hours) ~ Report CO2 emissions from all ~ Report CH4 emissions from all orifice orifice meters (standard cubic feet) meters (standard cubic feet) F. Regulator Equipment Leaks Using Leak Detection ~ Operating time of leaking ~ Total number of components found leaking component (hours) ~ Report CO2 emissions from all ~ Report CH4 emissions from all regulators regulators (standard cubic feet) (standard cubic feet) G. Open Ended Line Equipment Leaks Using Leak Detection ~ Operating time of leaking ~ Total number of components found leaking component (hours) ~ Report CO2 emissions from all ~ Report CH4 emissions from all open ended open ended lines (standard cubic lines (standard cubic feet) feet) 2. Above Ground Meters and Regulators at Non-custody Transfer City Gate Stations ~ Number of non-custody transfer ~ Number of meter runs at non custody gate stations transfer city gate stations. ~ Custody transfer gate station meter ~ Total time the meter run was operational run leak factor (hours) 3. Below Ground Meters and Regulators and Vault Equipment Leaks ~ Number of stations with inlet ~ Number of stations with inlet pressure pressure greater than 300 psig between 100 and 300 psig. ~ Number of stations with inlet ~ Total time the station was operational pressure less than 300 psig (hours) Petroleum and Natural Gas Monitoring Checklist Natural Gas Distribution Page 2 of 3 40 CFR 98, subpart W September 2010 ------- 4. Pipeline Main Equipment Leaks ~ Number of miles of mains 5. Service Line Equipment Leaks ~ Number of services 6. Stationary Fuel Combustion Emissions Cumulative number of external fuel combustion units with a rated heat capacity equal to or less than 5 MMBtu/hr, by type of unit Cumulative emissions from external fuel combustion units with a rated heat capacity larger than 5 MMBtu/hr, by type of unit (cubic feet) Cumulative number of all internal combustion units, by type of units Cumulative mass/volume of fuel combusted in internal combustion units, by fuel type Total time the pipeline main was operational (hours) Total time the service line was operational (hours) Cumulative number of external fuel combustion units with a rated heat capacity larger than 5 MMBtu/hr, by type of unit Cumulative volume of fuel combusted in external fuel combustion units with a rated heat capacity larger than 5 MMBtu/hr, by fuel type (cubic feet) Cumulative emissions from internal combustion units, by type of unit (cubic feet) Concentration of gas hydrocarbon constituents (such as methane, ethane, propane, butane and pentanes plus) Petroleum and Natural Gas Monitoring Checklist Natural Gas Distribution Page 3 of 3 40 CFR 98, subpart W September 2010 ------- |