BCF = Billion cubic feet at 14.73 psia pressure base. Working gas means the maximum gas that can be cycled in and out of storage. Base Gas means gas that is not cycled in and provides pressure support.
CMS Gas Transmission Company's Kalkaska 13/35 field was not fully developed.
Consumers Energy's Marsac Creek field was abandoned during the first injection cycle.
Consumers Energy's Northville (Trenton) field is scheduled for abandonment and is currently withdrawing gas, which may take up to a decade to deplete the reservoir. The field is partially abandoned with some of the wells plugged. This field is not included in the Consumers Energy total for Working Gas.
ANR Pipeline sold Capac field to Mid Michigan Gas Storage and the field is being depleted for abandonment.
SEMCO Energy's Yankee field was not fully developed.
Mid Michigan Gas Storage Company purchased the Norwich, Orient, Coldwater, Croton, and N. Hamilton storage fields from affiliate ANR Pipeline Company in December 1998. Sale approved by FERC order dated October 23, 1998 in docket number CP98-547-000. Norwich and Croton are abandoned. N. Hamilton, Orient, and Coldwater are being depleted for base gas and readied for abandonment. No rates are on file. FERC order dated August 9, 2004 in docket number CP04-79 authorized the sale of the Capac field to be depleted and readied for abandonment.