Kinder Morgan CO2 Co., L.P. v. Montezuma County Board of Commissioners
396 P.3d 657
Colo.2017Background
- Kinder Morgan operated the McElmo Dome CO2 unit and filed annual property-tax statements for multiple leaseholds in Montezuma County.
- For tax year 2008 Kinder Morgan reported a wellhead selling price of $0.52/MCF using an unrelated-parties netback that deducted a $0.22/MCF transportation tariff paid to Cortez Pipeline.
- Kinder Morgan owned a 50% interest in Cortez Pipeline Company, which charged a uniform $0.22/MCF tariff.
- A county audit concluded the pipeline was a related party, disallowing the full transportation deduction, raising the leasehold valuation by ~$57 million and Kinder Morgan’s tax liability by ~$2.03 million; the assessor issued retroactive corrective assessments.
- Kinder Morgan paid under protest and argued the assessor lacked authority to retroactively assess because no property had been omitted—only the selling price was underreported. The Board of Assessment Appeals, the court of appeals, and the Colorado Supreme Court all upheld the assessment.
Issues
| Issue | Plaintiff's Argument (Kinder Morgan) | Defendant's Argument (Montezuma County / State) | Held |
|---|---|---|---|
| Whether an operator's underreporting of wellhead selling price (but not omission of a leasehold) qualifies as "omitted property" authorizing retroactive assessment under §§ 39-5-125 / 39-10-101 | Retroactive assessments apply only where property itself was omitted from the roll; here leaseholds were reported so assessor lacked authority | Colorado's oil-and-gas tax scheme is self-reporting; legislature treated underreporting of selling price/quantity as a form of omitted property and enabled corrective assessments | Held: Underreporting selling price/quantity can constitute "omitted property"; assessor had statutory authority to issue retroactive assessments |
| Whether legislative amendments (House Bill 90-1018) support treating underreporting as omitted property | HB 90-1018 did not amend omitted-property statutes; thus it cannot authorize corrective assessments for underreported value | The amendments (in §§ 29-1-301 and 39-10-107) show legislative intent to treat underreporting of selling price/quantity as omitted property and to allow retroactive collection | Held: The 1990 amendments demonstrate intent to treat underreporting as omitted property and justify retroactive assessments |
| Whether the audit scheme and statutory timeline require authority to correct underreported values | Even with audits, assessor lacks power to change reports once filed; retroactive assessment would overstep statutory bounds | The compressed valuation timeline (statements due Apr 15; notices by Jun 15) and mandated audit procedures require the ability to issue corrective assessments to avoid under-taxation | Held: Practical valuation timeline and audit framework support assessor authority to issue corrective retroactive assessments |
| Whether Kinder Morgan was entitled to deduct the full $0.22/MCF transportation tariff (i.e., whether Cortez Pipeline was an unrelated party) | Cortez Pipeline was an independent service provider; the full transportation deduction was allowable | Kinder Morgan owned 50% of Cortez Pipeline (a partnership interest), making it a related party under ARL definition; full deduction not allowed | Held: Substantial evidence supports that Kinder Morgan and Cortez Pipeline were related parties; full transportation deduction disallowed |
Key Cases Cited
- Petron Dev. Co. v. Washington County Bd. of Equalization, 109 P.3d 146 (Colo. 2005) (describes wellhead pricing, netback method, and valuation of oil & gas leaseholds)
- Yuma County Bd. of Equalization v. Cabot Petroleum Corp. (Cabot II), 856 P.2d 844 (Colo. 1993) (construed related assessment statutes and reversed prior appellate ruling; relevant to treatment of willfully false or misleading statements)
- Bd. of Assessment Appeals v. E.E. Sonnenberg & Sons, 797 P.2d 27 (Colo. 1990) (discusses relevant-market/netback valuation concepts)
- Hagood v. Heckers, 513 P.2d 208 (Colo. 1973) (recognizes mineral estates as real property)
- Bd. of County Comm’rs v. Vail Assocs., Inc., 19 P.3d 1263 (Colo. 2001) (addresses legislative authority to tax and constitutional actual-value requirement)