{"data":{"id":"us/43-cfr-3175.119","jurisdiction":"us","citation":"43 CFR 3175.119","heading":"Components to analyze.","body":"(a) The gas must be analyzed for the following components:\n(1) Methane;\n(2) Ethane;\n(3) Propane;\n(4) Iso Butane;\n(5) Normal Butane;\n(6) Pentanes;\n(7) Hexanes + (C6+);\n(8) Carbon dioxide; and\n(9) Nitrogen.\n(b) When the concentration of C6+ exceeds 0.5 mole percent, the following gas components must also be analyzed:\n(1) Hexanes;\n(2) Heptanes;\n(3) Octanes; and\n(4) Nonanes +.\n(c) In lieu of testing each sample for the components required under paragraph (b) of this section, the operator may periodically test for these components and adjust the assumed C6+ composition to remove bias in the heating value (see § 3175.126(a)(3)). The C6+ composition must be applied to the mole percent of C6+ analyses until the next analysis is done under paragraph (b) of this section. The minimum analysis frequency for the components listed in paragraph (b) of this section is as follows:\n(1) For high-volume FMPs, once per year; and\n(2) For very-high-volume FMPs, once every 6 months.","path":["Title 43—Public Lands: Interior","Subtitle B—Regulations Relating to Public Lands","CHAPTER II—BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR","SUBCHAPTER C—MINERALS MANAGEMENT (3000)","PART 3170—ONSHORE OIL AND GAS PRODUCTION","Subpart 3175—Measurement of Gas"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-43.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:15Z","sha256":"342bba8f1425115b4bece4f8cde7329123bd49ab9a10f1d100729c28b7b973ea","source_id":"us-cfr","stale":true,"prev":"us/43-cfr-3175.118","next":"us/43-cfr-3175.120"},"notice":"GroundRules: Original legal text. Not legal advice."}