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§147.303 Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. RegSenseSafe Drinking WaterCFR RegulationsWater QualityWater ProgramsEnvironmental Protection Agency (EPA)ColoradoEnvironmentalWater QualityCFR SectionEnglishUnderground Injection ControlFocus Area
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 §144.28(f)(3)(i) or (ii) as applicable; or(b) A value for wellhead pressure calculated by using the following formula;Pm = (0.733 – 0.433 Sg)dwhere:Pm = injection pressure at the wellhead in pounds per square inchSg = specific gravity of injected fluid (unitless)d = injection depth in feet.READ MORESHOW LESS['Water Programs']['Water Quality', 'Underground Injection Control', 'Safe Drinking Water']