[Code of Federal Regulations] [Title 40, Volume 19] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR147.503] [Page 743] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 147--STATE UNDERGROUND INJECTION CONTROL PROGRAMS--Table of Contents Subpart K--Florida Sec. 147.503 Existing Class II (except enhanced recovery and hydrocarbon storage) wells authorized by rule. Maximum injection pressure. To meet the operating requirements of Sec. 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: Pm=(0.733-0.433 Sg)d where: Pm=injection pressure at the well head in pounds per square inch Sg=specific gravity of injected fluid (unitless) d=injection depth in feet. [49 FR 45306, Nov. 15, 1984] [[Page 744]]