§3175.114. Spot samples—allowable methods.
43 C.F.R. § 3175.114
Spot samples must be obtained using one of the following methods:
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);
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;
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;
Portable gas chromatograph. Samples taken using this method must comply with § 3175.118; or
Other methods approved by the BLM (through the PMT) and posted at www.blm.gov.
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.
Notes, amendments, and revision history
Source
Source: 81 FR 81609, Nov. 17, 2016, unless otherwise noted.
Authority
Authority: 25 U.S.C. 396d and 2107; 30 U.S.C. 189, 306, 359, and 1751; and 43 U.S.C. 1732(b), 1733, and 1740.
Source
Source: 81 FR 81421, Nov. 17, 2016, unless otherwise noted.