Colorado Property Tax Administrator v. CO2 Committee, Inc.Annotate this Case
CO2 Committee, Inc. (“CO2”) was a nonprofit corporation whose membership was comprised of nonoperating owners of fractional interests in the McElmo Dome unit, a consolidation of working interests in a large deposit of pure carbon dioxide in Montezuma County and Dolores County, near the Four Corners area of Colorado. Kinder Morgan CO2 Company, L.P. (“Kinder Morgan”) was the operator of the unit. Following an audit for the 2008 tax year, Montezuma County determined that Kinder Morgan had underreported the value of gas produced at the unit’s leaseholds by improperly deducting certain costs that it, as the unit operator, was not entitled to deduct. The county ultimately increased its valuation of the entire unit by approximately $57 million. The Montezuma County assessor then imposed a retroactive tax assessment on the unit totaling more than $2 million based on that increased value. That prompted Kinder Morgan to challenge—ultimately unsuccessfully—the county’s authority to impose the retroactive tax. The issue this case presented for the Colorado Supreme Court's review centered on whether CO2 had standing to independently challenge the county's retroactive property tax increase. Finding that it did not, the Court dismissed its appeal.