[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: 40CFR147.253]

[Page 737]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 147--STATE UNDERGROUND INJECTION CONTROL PROGRAMS--Table of Contents
 
                          Subpart F--California
 
Sec. 147.253  Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule.

    Maximum injection pressure. The owner or operator shall limit 
injection pressure to the lesser of:
    (a) A value which will not exceed the operating requirements of 
Sec. 144.28(f)(3) (i) or (ii) as applicable; or
    (b) A value for well head pressure calculated by 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 inject fluid (unitless)
d=injection depth in feet.

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