Southern Star Central, Response to Data Request dated 6-18-12, CP12-285, McLouth Storage Field

Southern Star Central Gas Pipeline, Inc. 4700 Highway 56 P.O. Box 20010 Owensboro, Kentucky 42304-0010 Phone 270/852-5000 David N. Roberts Staff Analyst, Regulatory Affairs Phone: (270)852-4654 Fax: (270)852-5010 Email: david.n.roberts@sscgp.com July 17, 2012 Ms. Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, N.E. Washington, D.C. 20426 Re: OEP/DPC/CB-2 Southern Star Central Gas Pipeline, Inc. Docket No. CP12-285-000 375.308(x)(3) Dear Secretary Bose: Southern Star Central Gas Pipeline, Inc. (Southern Star) e-files herein its response to the above- referenced data request dated June 18, 2012. The written responses reference various exhibits providing additional information with certain exhibits designated as Privileged and Confidential due to the proprietary nature of the information provided. The Privileged and Confidential exhibits have been designated and filed separately. As such, Southern Star requests that the Commission accord treatment to the enclosed documents concerning Privileged and Confidential information in a manner consistent with Docket No. PL02-1-001 and Section 388.112 of the Commissions Regulations. The responses are being filed in accordance with the provisions of the Commissions Rules and regulations of Practice and Procedure. Southern Star will serve those parties appearing on the official service list a copy of the public portion of this filing. Also included is information about the respondent and a verification statement as required pursuant to 18 CFR 385.2005. Any correspondence regarding this submission should be directed to the undersigned at 270-852- 4654. Sincerely, /s/ David N. Roberts Staff Analyst, Regulatory Affairs c Todd Ruhkamp Southern Star Central Gas Pipeline, Inc. McLouth Gas Storage Field Docket No. CP12-285-000 OFFICE OF ENERGY PROJECTS REQUEST Question No. 1: Are the McLouth Sandstone and the Mississippian Limestone hydraulically connected? If so, does Southern Star store gas in both the McLouth Sandstone and the Mississippian Limestone? Are the storage injection/withdrawal (I/W) and observation wells at the McLouth Natural Gas Storage Field completed only in the McLouth Sandstone or the Mississippian Limestone as well? Generally, provide a more complete description of the active storage reservoir at the McLouth Gas Storage Field and the relationship between the McLouth Sandstone and the Mississippian Limestone. Response: To Southern Stars knowledge, the McLouth Sandstone and Mississippian Limestone formations are not hydraulically connected. Several of the storage injection/withdrawal wells in the McLouth Sandstone were hydraulically fractured in the early 1980s, but there is no evidence that this resulted in a hydraulic connection between the McLouth Sandstone and the ...