{"data":{"id":"us/43-cfr-3175.114","jurisdiction":"us","citation":"43 CFR 3175.114","heading":"Spot samples—allowable methods.","body":"(a) Spot samples must be obtained using one of the following methods:\n(1) Purging—fill and empty method. Samples taken using this method must comply with GPA 2166-05, Section 9.1 (incorporated by reference, see § 3175.30);\n(2) Helium “pop” method. Samples taken using this method must comply with GPA 2166-05, Section 9.5 (incorporated by reference, see § 3175.30). The operator must maintain documentation demonstrating that the cylinder was evacuated and pre-charged before sampling and make the documentation available to the AO upon request;\n(3) Floating piston cylinder method. Samples taken using this method must comply with GPA 2166-05, Sections 9.7.1 to 9.7.3 (incorporated by reference, see § 3175.30). The operator must maintain documentation of the seal material and type of lubricant used and make the documentation available to the AO upon request;\n(4) Portable gas chromatograph. Samples taken using this method must comply with § 3175.118; or\n(5) Other methods approved by the BLM (through the PMT) and posted at www.blm.gov.\n(b) If the operator uses either a purging—fill and empty method or a helium “pop” method, and if the flowing pressure at the sample port is less than or equal to 15 psig, the operator may also employ a vacuum-gathering system. Samples taken using a vacuum-gathering system must comply with API 14.1, Subsection 11.10 (incorporated by reference, see § 3175.30), and the samples must be obtained from the discharge of the vacuum pump.","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":"b27b48bf0ef0f9b4d7677a6cd2869697d801e03f389895b100b9162b87f435af","source_id":"us-cfr","stale":true,"prev":"us/43-cfr-3175.113","next":"us/43-cfr-3175.115"},"notice":"GroundRules: Original legal text. Not legal advice."}