US lawFederal (United States)RegulationsTitle 43 CFR — Public Lands: InteriorChapter II — BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIORPart 3200 — GEOTHERMAL RESOURCE LEASINGSubpart 3252 — Conducting Exploration Operations3252.1543 C.F.R. § 3252.15When must I abandon a temperature gradient well?Last amended: 2016Year: 2026Length: 12 wordsOfficial source Cite as 43 C.F.R. § 3252.15 (2026)When you no longer need it, or when BLM requires you to.Previous43 C.F.R. § 3252.14Next43 C.F.R. § 3252.16