Categorical Exclusion Determination
Office of NEPA Policy and Compliance
October 26, 2016
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The replacement pipeline will be constructed of internally lined steel line pipe that meets the flow and pressure requirement for the current Big Hill SPR mission. The pipeline will be placed within the existing right- of-way. The requirement of the pipeline is to assure approximately 1.20 million barrels per day can be pumped to the Big Hill Site providing an inlet pressure of at least 100 psi to the suction of the Raw Water Injection pumps and that can withstand the maximum discharge pressure of the Raw Water Intake pumps. The new line pipe will conform to ANSI/ASME B31.4, constructed of 42-inch outside diameter, 0.375-inch wall, API 5L, X60, grade material with internal ½-inch cement lining and an external fusion bonded epoxy (FBE) corrosion preventative coating. The maximum fluid velocity will be less than 9 feet per second (fps).