Bluewater Gas Storage, LLC submits Supplemental Information under CP12-51.

James D. Seegers jseegers@velaw.com Tel +1.713.758.2939 Fax +1.713.615.5206 February 14, 2012 Ms. Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, N.E. Washington, DC 20426 Re: Bluewater Gas Storage, LLC, Docket No. CP12-51-000 Supplemental Information Submittal Dear Ms. Bose: Bluewater Gas Storage, LLC (Bluewater) submitted an Application for Section 3 Authorization and Presidential Permit and Related Authorizations for its St. Clair River Crossing Replacement Project (Application), pursuant to Section 3 of the Natural Gas Act (NGA), as amended,1 and Part 153 of the regulations of the Federal Energy Regulatory Commission (Commission)2 on January 27, 2012 in the above reference docket. Bluewater hereby submits for filing supplemental information to the Application. Specifically, Bluewater hereby submits Attachment 6J to Resource Report No. 6, HDD Design Report, and Attachment 9D to Resource Report No. 9, HDD Noise Report.3 This filing consists of public information and Critical Energy Infrastructure Information (CEII). In accordance with the Commissions Orders regarding CEII,4 Bluewater respectfully requests CEII designation for those sheets removed and marked as CEII, 1 15 U.S.C. 717b. 2 18 C.F.R. Part 153 (2011). 3 These documents were previously filed as privileged as part of Bluewaters January 27, 2012 Application. 4 Critical Energy Infrastructure Information, Order No. 630, 2001-2005 FERC Stats. & Regs., Regs. Preambles 31,140, order on rehg, Order No. 630-A, 2001-2005 FERC Stats. & Regs., Regs. Preambles 31,147 (2003) (codified at 18 C.F.R. pts. 375 and 388); Critical Energy Infrastructure Information, Order No. 662, 2001-2005 FERC Stats. & Regs., Regs. Preambles 31,189 (2005) (codified at 18 C.F.R. pt. 388); Critical Energy Infrastructure Information, Order No. 683, 2006-2007 FERC Stats. & Regs., Regs. Preambles 31,228 (2006), order on rehg, Order No. 683-A, 119 FERC 61,029 (2007) (codified at 18 C.F.R. pt. 388); Critical Energy Infrastructure Information, Order No. 702, 2006-2007 FERC Stats. & Regs., Regs. Preambles 31,258 (2007) (codified at 18 C.F.R. pt. 388); see also Amendments to Conform Regulations With Order No. 630 (Critical Energy Infrastructure Information Final Rule), Order No. 643, 2001-2005 FERC Stats. & Regs., Regs. Preambles 31,149 (2003). Vinson & Elkins LLP Attorneys at Law First City Tower, 1001 Fannin Street, Suite 2500 Abu Dhabi Austin Beijing Dallas Dubai Hong Kong Houston London Houston, TX 77002-6760 Moscow New York Palo Alto Riyadh Shanghai Tokyo Washington Tel +1.713.758.2222 Fax +1.713.758.2346 www.velaw.com Ms. Kimberly D. Bose February 14, 2012 Page 2 because these pages contain information of such detail and specificity that, when combined with publicly-available information, qualifies as CEII as that term is defined in 18 C.F.R. 388.113(c)(1). The documents in Volume III are marked CONTAINS CRITICAL ENERGY INFRASTRUCTURE INFORMATIONDO NOT RELEASE.5 Questions pertaining to confidential information should be addressed to either