{"data":{"id":"us/40-cfr-table-w-6-to-subpart-w-of-part-98","jurisdiction":"us","citation":"40 CFR Table W-6 to Subpart W of Part 98","heading":"Table W-6 to Subpart W of Part 98—Default Methane Leaker Emission Factors","body":"Equipment components Emission factor (scf methane/hour/ component)\nIf you survey using Method 21 as specified in § 98.234(a)(2)(i) If you survey using Method 21 as specified in § 98.234(a)(2)(ii) If you survey using any of the methods in § 98.234(a)(1), (3), or (5)\nLeaker Emission Factors—LNG Storage and LNG Import and Export Equipment—Storage Components and Terminals Components, LNG Service\nValve 1.19 0.23 1.94\nPump Seal 4.00 0.73 6.54\nConnector 0.34 0.11 0.56\nOther 1 1.77 0.99 2.9\nLeaker Emission Factors—LNG Storage and LNG Import and Export Equipment—Storage Components and Terminals Components, Gas Service\nValve 2 14.84 9.51 24.2\nConnector 5.59 3.58 9.13\nOpen-Ended Line 17.27 11.07 28.2\nPressure Relief Valve 39.66 25.42 64.8\nMeter and Instrument 19.33 12.39 31.6\nOther 3 4.1 2.63 6.70\nLeaker Emission Factors—Natural Gas Distribution—Transmission-Distribution Transfer Station 4 Components, Gas Service\nConnector 1.69 2.76\nBlock Valve 0.557 0.91\nControl Valve 9.34 15.3\nPressure Relief Valve 0.27 0.44\nOrifice Meter 0.212 0.35\nRegulator 0.772 1.26\nOpen-ended Line 26.131 42.7\n1 “Other” equipment type for components in LNG service should be applied for any equipment type other than connectors, pumps, or valves.\n2 Valves include control valves, block valves and regulator valves.\n3 “Other” equipment type for components in gas service should be applied for any equipment type other than valves, connectors, flanges, open-ended lines, pressure relief valves, and meters and instruments, as specified in § 98.232(g)(6) and (7) and § 98.232(h)(7) and (8).\n4 Excluding customer meters.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 98—MANDATORY GREENHOUSE GAS REPORTING","Subpart W—Petroleum and Natural Gas Systems"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"ab9c2d41b7c3bd7ebb490b89ea887b04439b7eeaf00e4cd2d10f051bf40756bb","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-w-5-to-subpart-w-of-part-98","next":"us/40-cfr-table-w-7-to-subpart-w-of-part-98"},"notice":"GroundRules: Original legal text. Not legal advice."}