{"data":{"id":"us/40-cfr-147.503","jurisdiction":"us","citation":"40 CFR 147.503","heading":"Existing Class II (except enhanced recovery and hydrocarbon storage) wells authorized by rule.","body":"Maximum injection pressure. To meet the operating requirements of § 144.28(f)(3)(i) of this chapter, the owner or operator shall use an injection pressure at the well head no greater than the pressure calculated using the following formula:\nPm = (0.733−0.433 Sg)d\nwhere:\nPm = injection pressure at the well head in pounds per square inch\nSg = specific gravity of injected fluid (unitless)\nd = injection depth in feet.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER D—WATER PROGRAMS","PART 147—STATE, TRIBAL, AND EPA-ADMINISTERED UNDERGROUND INJECTION CONTROL PROGRAMS","Subpart K—Florida"],"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":"6fa66d9077c3c80ca7036e8d1a750f182846bb41837354b2ccae31f394d49ec3","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-147.502","next":"us/40-cfr-147.504"},"notice":"GroundRules: Original legal text. Not legal advice."}