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EIA Adjusts Storage Data For ANR Change

EIA Adjusts Storage Data For ANR Change

Working gas levels in storage at the end of the winter heating season have been revised by the Energy Information Administration (EIA) after a report from ANR Pipeline that 47 Bcf of working gas in its Michigan storage facilities was reclassified as base gas. The change means working gas levels at the end of the winter heating season were 3% lower than first reported by the EIA, or 1,430 Bcf compared to 1,477 Bcf.

The revised level still was 245 Bcf more than at the same time a year earlier and still was the highest level of working gas at the end of any heating season in the past seven years. In March 1992, there was 1,545 Bcf of working gas in storage. The record level was achieved in 1983 when 2,148 Bcf of total working gas was in storage at the end of March.

ANR Pipeline confirmed last week that it was responsible for the change. In its last rate case, ANR requested that 62.1 Bcf of working gas in its Michigan storage fields be reclassified as base gas, but following that five fields containing reclassified gas (15 Bcf) were abandoned or no longer used for storage: Coldwater, Croton, North Hamilton, Norwich and Orient.

"For accounting purposes it was effective [January] 1997, but in terms of operationally reporting it to EIA, we just got around to it April 1 of this year," said ANR spokesman Joe Martucci.

One other storage change that's likely to occur in Michigan and affect EIA's statistics this summer is the introduction of the Washington 10 storage field in Macomb County. The new field, which is owned and operated by MCN, started injecting gas in April and has 41.6 Bcf of working gas capacity and 400 MMcf/d of deliverability.

Rocco Canonica

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