Underwater Acoustic Measurement of the Spartan 151 Jack-up Drilling Rig in the Cook Inlet Beluga Whale Critical Habitat

This report details underwater acoustic measurements in the vicinity of the Spartan 151 jack-up drilling rig in the Kitchen Lights Unit of Cook Inlet, Alaska, and the analysis of the collected data. The measurements were performed by Marine Acoustics, Inc. in September 2011 under contract to Furie Operating Alaska, LLC. Spartan 151 is an independent leg, cantilever jack-up rig, capable of drilling in up to 150 ft (45.7 m) of water depth 12 nm northeast of Nikiski Bay, Alaska, and started drilling an exploratory well in September 2011.