STATE, DEPT., HEALTH v. THE MILL, 887 P.2d 993 (Colo. 1994)

State of Colorado, Department of Health, Petitioner, v. The Mill, a limited partnership, Respondent.

No. 93SC418Supreme Court of Colorado.
Decided December 19, 1994. Petition for Rehearing DENIED, January 17, 1995.

Certiorari to the Colorado Court of Appeals.

JUDGMENT REVERSED AND CASE REMANDED WITH DIRECTIONS.

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Gale A. Norton, Attorney General, Stephen K. ErkenBrack, Chief Deputy Attorney General, Timothy M. Tymkovich, Solicitor General, Jerry W. Goad, First Assistant Attorney General, Natural Resources Section Denver, Colorado, Attorneys for Petitioner.

Holley, Albertson Polk, P.C., George Alan Holley, Eric E. Torgersen, Denver, Colorado, Attorneys for Respondent.

EN BANC

(JUSTICE SCOTT would grant the petition.)

JUSTICE ERICKSON specially concurs.

JUSTICE SCOTT dissents.

JUSTICE MULLARKEY delivered the Opinion of the Court.

[1] This case is a consolidation of two cases. The first was a regulatory taking action initially brought by respondent, The Mill, against petitioner, the Colorado Department of Health (CDH). While that case was pending in the court of appeals, it was consolidated with an appeal by The Mill in an eminent domain action brought by CDH pursuant to the federal Uranium Mill Tailings Radiation Control Act (UMTRCA), 42 U.S.C. §§ 7901
to 7942 (1988), and the corresponding state statute, sections 25-11-301 to -305, 11A C.R.S. (1989). [2] In the regulatory taking action, the court of appeals upheld the trial court. It ruled that use limitations recommended by CDH in correspondence with the Mill during 1983 constituted a total regulatory taking and remanded for a new determination of just compensation. The Mill v. State of Colorado, Department of Health, 868 P.2d 1099 (Colo.App. 1993). In the eminent domain action, the court reversed the trial court and held that Colorado’s rule against enhanced value[1] did not apply in condemnation actions under UMTRCA and that evidence of the decontaminated value of the Mill’s property must be admitted in order to determine its fair market value. Id. For the reasons discussed below, we reverse the court of appeals’ rulings on both issues and remand with directions.

I.
[3] The property at issue in this case is a 61-acre parcel on which uranium milling operations were once conducted pursuant to an Atomic Energy Commission (AEC) license. Thirty-six acres of the property were covered by uranium mill tailings. The remaining twenty-five acres were used as the mill yard. After milling operations ceased, the property was used as an uranium mill tailings disposal site, also pursuant to an AEC license. In 1968, the AEC delegated authority to the State of Colorado to regulate radioactive materials and jurisdiction over the AEC license was transferred to the state. Then, in 1971, the state terminated the license. The tailings pile remained subject to state uranium mill tailings regulations. In 1973, after reviewing the available state records,[2] The Mill

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purchased the entire 61-acre parcel. From 1973 to 1983 the site was used for storage. During this time, CDH actively monitored The Mill’s maintenance of the tailings pile and the condition of the mill yard.

[4] In 1978, Congress passed the Uranium Mill Tailings Radiation Control Act. UMTRCA mandated the designation and clean up of uranium processing sites. Pursuant to UMTRCA, the entire 61-acre parcel belonging to The Mill was designated as a uranium processing site. In 1980, testing on the entire parcel indicated that contamination existed in both the tailings pile and the mill yard sufficient to qualify the site for clean up under UMTRCA. [5] In 1983, The Mill leased the mill yard to O.C. Coal Company for $7,000 per month for coal storage. The Mill notified CDH of the lease and CDH met on March 11, 1983, with both parties to discuss certain precautions to avoid the spread of radioactive contamination from the property. The agreed-upon precautions were confirmed in letters sent by CDH to The Mill and O.C. Coal Company on March 15, 1983. These precautions limited the area available for storage to those portions of the property where contaminated soils would not mix with the coal. On July 15, 1983, CDH sent The Mill a summary of a routine inspection which indicated non-compliance with CDH tailings regulations including failure to post warning signs on the property, no gates to secure the tailings pile, and signs of horses grazing on the piles. In addition, CDH notified The Mill that coal had been stored contrary to the terms of the agreement documented in the March 15 letter. These letters are the basis for the alleged regulatory taking. [6] O.C. Coal prematurely terminated its lease in May 1984. After that time, under the use restrictions urged by CDH, the income from the mill yard fell to between $500 and $700 per month. The Mill argues that this was not a reasonable economic return on the property. [7] In 1986, The Mill filed an action against CDH claiming that, because of the restrictions placed on the use of the mill yard, the property could not be put to any reasonable economic use. The Mill pled as grounds for relief inverse condemnation, regulatory taking, and estoppel. The trial court dismissed the inverse condemnation claim but found that the state had effected a regulatory taking and awarded $200,000 to The Mill in lost-use value during the period necessary for decontamination. On appeal, the court of appeals reversed the dismissal of the inverse condemnation claim and held that all other claims were subsumed in the inverse condemnation claim. The Mill v. Department of Health, 787 P.2d 176 (Colo.App. 1989) (The Mill I). This court reversed the court of appeals’ decision and remanded the case for consideration of The Mill’s regulatory taking and estoppel claims. Department of Health v. The Mill, 809 P.2d 434 (Colo. 1991) (The Mill II). [8] While those issues were on appeal, CDH filed an action to condemn The Mill’s property under section 25-11-303(1)(d), 11A C.R.S. (1989). In this action, the parties stipulated that the market value of the property in its contaminated state was zero, and the trial court entered a judgment vesting title to the property in the state. The Mill appealed the judgment. The condemnation action and the regulatory taking action were consolidated for consideration by the court of appeals. [9] In the consolidated action, the court of appeals found that both The Mill’s regulatory taking and estoppel claims were “subsumed” in its disposition of the eminent domain proceeding because the monetary award arising from any of the claims could not exceed the fair market value of the property. The court found that the regulatory taking issue was relevant to the eminent domain action only as it determined at what point the property was taken. The court (1) affirmed the trial court’s ruling that there had been a regulatory taking; (2) sua sponte set aside the stipulation of zero value on grounds that, for purposes of condemnation pursuant to

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UMTRCA, fair market value must take into account the decontaminated value of the property; and (3) remanded for a new determination of just compensation. The Mill v. Department of Health, 868 P.2d 1099, 1105 (Colo.App. 1993) (The Mill III). CDH petitioned for review and we granted certiorari to review both the regulatory taking and eminent domain rulings.

II.
[10] The court of appeals affirmed the trial court’s ruling that CDH correspondence issued to O.C. Coal and The Mill effected a total regulatory taking of The Mill’s property. The Mill III, 868 P.2d at 1110. On certiorari review to this court, CDH argues that its letters to O.C. Coal and The Mill did not rise to the level of regulation and thus The Mill’s regulatory taking claim must fail because it is not ripe. Furthermore, CDH argues, The Mill’s inability to put the property to reasonable economic use was not a result of CDH’s actions, but rather of the contamination on the property. For that reason, it argues, the claim should fail for lack of causation. CDH also contends that viable economic uses for the property remain, but, even if there were no remaining economic uses, any restrictions placed on the property by CDH did not effect a compensable taking under Lucas v. South Carolina Coastal Council, 112 S.Ct. 2886, 2901 (1992), because (1) the restrictions were consistent with background principles of nuisance and property law, and (2) the restrictions reflected recent scientific recognition of the hazards presented to human health by radioactive materials.

[11] The Mill counters that because CDH records indicated that its property was not under license by CDH at the time of purchase and that the property had no use restrictions in place, the restrictions later imposed by CDH did not inhere in its title to the property. Furthermore, The Mill argues, its actual use of the property did not constitute common law nuisance because it complied with all of the CDH guidelines. The Mill also argues that even if CDH action did not effect a per se taking by depriving The Mill of all economic use of its property, a court must balance the competing public and private interests to determine whether a regulatory taking nevertheless occurred. Under this balancing test, The Mill asserts that the letters issued by CDH constituted a regulatory taking. [12] The court of appeals rejected CDH’s ripeness argument and, upon weighing the public and private interests affected by regulation of The Mill’s property, found that the restrictions placed on the use of the property by CDH effected a regulatory taking. We do not agree with the court of appeals’ analysis. [13] A land-use regulation constitutes a taking under the Colorado and United States constitutions if it prevents all economically viable use of the property. Lucas, 112 S.Ct. at 2893; Van Sickle v. Boyes, 797 P.2d 1267, 1271 (Colo. 1990). Regulation which does not prevent all economic use may also constitute a taking if it goes “too far.” Pennsylvania Coal Co. v. Mahon, 260 U.S. 393, 415 (1922). The determination of whether a regulation goes “too far” for purposes of the Fifth Amendment is essentially an “ad hoc, factual” inquiry. Golden Pacific Bancorp v. United States, 15 F.3d 1066, 1072 (Fed. Cir. 1994) (citation omitted), cert. denied, 1994 WL 388213 (U.S. Oct. 31, 1994).

The [Supreme Court], however, has identified several factors that should be taken into account when determining whether a governmental action has gone beyond “regulation” and effects a “taking.” Among those factors are: “the character of the governmental action, its economic impact, and its interference with reasonable investment-backed expectations.”

[14] Id. (citing Pruneyard Shopping Center v. Robins, 447 U.S. 74, 83
(1980); Kaiser Aetna v. United States, 444 U.S. 164, 175 (1979); Penn Central Trans. Co. v. New York City, 438 U.S. 104, 124
(1978)); Kirk v. Denver Publishing Co., 818 P.2d 262, 268 (Colo. 1991). The Supreme Court has recognized that in weighing these factors the force of the third factor may be

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“so overwhelming . . . that it disposes of the takings questions.” Ruckelshaus v. Monsanto Co., 467 U.S. 986, 1005 (1984). That is the case here.[3]

[15] The “reasonable investment-backed expectations” of the regulated party is the dispositive factor in takings analysis when the regulated party is “on notice” of the extent of the government’s regulatory authority over its property. For example, in Monsanto, the Supreme Court found that Monsanto had no reasonable investment-backed expectations that data submitted to EPA would be kept confidential because “Monsanto was on notice of the manner in which EPA was authorized to use and disclose any data turned over to it by an applicant for registration.”467 U.S. at 1006. Similarly, the Golden Pacific court found “the highly regulated nature of the banking industry” to be dispositive of the taking issue. 15 F.3d at 1074. “Put most simply,” the court wrote, “Golden Pacific could not have reasonably expected that the government `would fail to enforce the applicable statutes and regulations.'” Id. (citation omitted). In short, expectations of unregulated use are unreasonable when an extensive regulatory scheme is in place at the time of investment.[4] [16] The Mill was “on notice” that the radioactive materials present on the property were dangerous and highly regulated at both the state and federal level as was the use of the property itself.[5] While at the time The Mill purchased this property, scientific knowledge concerning the hazards of radiation was not as sophisticated as it is now, there nevertheless existed an awareness that the hazards posed by radiation were severe. The Colorado radiation control statute in effect at the time acknowledged that sites where radioactive materials are present “will represent a continuing and perpetual responsibility involving the public health, safety and general welfare.” 1963 C.R.S. § 66-26-3(h) (1967 Supp.). As early as 1971, a Congressional subcommittee began to investigate the dangers presented by the use of uranium mill tailings for construction purposes. The evidence presented at those hearings led to a program in Colorado to remove tailings from sites and structures in Grand Junction in 1972. See H.R. Rep. No. 1480(I), 95th Cong., 2d Sess. 11-12 (1978), reprinted in 1978 U.S.C.C.A.N. 7434. Moreover, the facts stipulated to by the parties in the regulatory taking action indicated that The Mill knew that the entire property, including the mill yard, had been subject to federal licensing and regulation since 1962 due to the presence of radioactive contamination. [17] Although the parties also stipulated that, at the time The Mill purchased the property in 1973, the mill yard was authorized for

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unrestricted use, it is important to view that stipulation in context. Testimony in the record indicates that no specific restrictions were imposed on the mill yard insofar as CDH did not require The Mill to obtain a specific license for any portion of the property because CDH preferred to obtain compliance through voluntary means. The record also shows that there was some confusion in the department concerning whether the mill yard was subject to a general license. However, the authority to regulate this site was in place at the time of the purchase, whether or not it was exercised at that time.

[18] To the extent that radioactive contamination in fact still existed on the property, it remained subject to broad regulatory authority. The Colorado radiation control statute gave CDH authority to “develop and conduct programs for evaluation and control of hazards associated with the use of any and all radioactive materials and other sources of ionizing radiation.” 1963 C.R.S. § 66-26-3 (1967 Supp.) Comprehensive state regulations governing radioactive materials, specifically, maintenance of uranium mill tailings piles and the possession of radioactive material, were already in effect at the time the Mill purchased the property. See 6 C.C.R. 1007-1 (1970). At the time The Mill purchased the site, CDH sent copies of these regulations to the new owner and, after that, continued to monitor both the mill yard and the tailings pile. [19] Under these radiation control regulations, “[n]o person shall receive, use, possess, transfer or dispose of radioactive material except as authorized in a specific or general license issued pursuant to these regulations.” RH 3.1, 6 C.C.R. 1007-1
(1970). The regulations imposed a “general license” that was “effective without the filing of applications with [CDH] or the issuance of licensing documents to particular persons” upon receipt of title to source material, e.g., “uranium or thorium, or any combination thereof, in any physical or chemical form.” RH 1.6; RH 3.2; RH 3.3.3. Uranium mill tailings were exempt from these licensing requirements “provided they are in compliance with the provisions set forth in [the CDH regulations governing mill tailings].” RH 3.19.2.4. Under the regulations, CDH was authorized to “impose upon any licensee . . . such requirements in addition to those established in these regulations as it deems appropriate or necessary to minimize danger to public health and safety or property.” RH 1.14. Likewise, licensees were required to allow CDH to inspect their facilities and sources of radiation on their property. RH 1.10. Given this regulatory environment, it is unreasonable for The Mill to claim it had no notice of the significant risk of further regulation of the site.[6] [20] Just as a property owner “on notice” of government regulatory authority cannot reasonably expect to avoid regulation, neither can a property owner reasonably expect to put property to a use that constitutes a nuisance, even if that is the only economically viable use for the property. “In accord with ordinary intuition, government need not pay even for complete takeover or destruction if the latter is justified by the owner’s insistence on using his property to injure other people or their property.” Laurence H. Tribe, American Constitutional Law 593 (New York 1988) (citations omitted) (emphasis added). In particular, the Supreme Court holds that where a regulatory action

does not proscribe a productive use that was previously permissible under relevant property and nuisance principles . . . [t]he use of these properties for what are now expressly prohibited purposes was always unlawful, and (subject to other constitutional limitations) it was open to the State at any point to make the implication of

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those background principles of nuisance and property law explicit.

[21] Lucas, 112 S.Ct. at 2901. Accordingly, the state may always restrict uses by regulation or statute when such uses previously were forbidden under common law principles. These uses were never part of the landowner’s “bundle of rights that are commonly characterized as property.” Kaiser Aetna, 444 U.S. at 176. Thus, it is unreasonable for a landowner to expect that such uses would never be formally prohibited. [22] The relevant Colorado common law principles would not permit a landowner to engage in activities that spread radioactive contamination.[7] Under Colorado common law, landowners have a duty to prevent activities and conditions on their land from creating an unreasonable risk of harm to others. Moore v. Standard Paint Glass, 145 Colo. 151, 155, 358 P.2d 33, 36
(1960) (emphasis added). A public nuisance is the doing or failure to do something that injuriously affects the safety, health, or morals of the public or works some substantial annoyance, inconvenience, or injury to the public. Specifically, under Colorado common law, land uses that cause pollution constitute a nuisance. Wilmore v. Chain O’ Mines, 96 Colo. 319, 325-26, 44 P.2d 1024, 1027 (1934) (“Whatever rights might be claimed by the defendant owners, they cannot justify the claim of a right to pollute the stream.”). Under Colorado’s nuisance statute enacted a year before The Mill purchased the processing site, “[a]ny unlawful pollution or contamination of any surface or subsurface waters . . . or of the air” constitutes a nuisance. 1963 C.R.S. § 39-13-305. Improperly handled, radioactive materials in particular were treated as a public nuisance under Colorado solid waste laws enacted before The Mill purchased the site. See 1963 C.R.S. § 36-23-10(d), -14 (1967 Supp.). [23] Under these principles of Colorado nuisance law, the right to make any use of the property that would create a hazard to public health by spreading radioactive contamination was excluded from The Mill’s title at the onset. The radioactive contamination at the site was present as a result of prior uranium milling activities. It was a condition of the property that did not either arise or disappear as a result of any classification or correspondence issued by CDH. Accordingly, any use limitations suggested by CDH to avoid the spreading of radioactive contamination could not have constituted a taking because those uses were never lawfully available to The Mill even in the absence of CDH action.[8] [24] Based on this analysis, we conclude that the right to use the processing site in a way that would spread radioactive contamination did not constitute a reasonable investment-backed expectation.[9] Because we find The Mill’s expectations to have been highly unreasonable, this factor is “so overwhelming” as to dispose of the taking issue for purposes of determining just compensation. Monsanto, 467 U.S. at 1005.

III.
[25] Sections 25-11-301 to 305, 11A C.R.S. (1989), govern the state’s participation in federal implementation of UMTRCA. Under section 303(d)(III), CDH is authorized to acquire a processing site by condemnation proceedings if necessary. § 25-11-303(d)(III). Fair market value in these proceedings is to be determined “in accordance with the criteria established in section 24-56-117(1)(c), C.R.S., and the provisions of the

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federal `Uranium Mill Tailings Radiation Control Act of 1978.'” Id. Section 24-56-117(1)(c), 10B C.R.S. (1988), codifies the Colorado rule against enhanced value. The rule requires the state to disregard any change in the fair market value of the property caused by the public improvement for which the property is being acquired in determining just compensation for the property. § 24-56-117(1)(c).[10]

[26] In the eminent domain action, the court of appeals found that the stipulation entered into by The Mill and CDH setting the fair market value of The Mill’s property in its contaminated state at zero was dictated by the rule against enhanced value and set aside the stipulation. Because application of the rule would limit The Mill’s compensation to the value of the property in its contaminated state, the court concluded that the rule against enhanced value was contrary to the intent of UMTRCA and resulted in unfair and disparate treatment of the owners of designated sites. The Mill III, 868 P.2d at 1103. Specifically, the court found that the financing scheme of UMTRCA indicated an intent that property owners pay nothing for cleanup, and thus, for the state to collect the difference between the contaminated and decontaminated property values would be contrary to the intent of the statute. Id.[11] It found further that the Colorado implementation scheme under UMTRCA resulted in disparate treatment of similarly-situated property owners, since those whose property is cleaned up by consensual agreement pay nothing, while property owners whose property is acquired by the state must repurchase their property at its market value in a decontaminated state. Id. The court of appeals declined to follow its prior decision in Department of Health v. Hecla Mining Co., 781 P.2d 122 (Colo.App. 1989), to the extent

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it was inconsistent with its ruling in this case. We do not agree.

[27] In addressing and rejecting the court of appeals’ analysis, we will examine first the alleged conflict between Colorado’s enhanced value statute and the federal law. Then we will consider the equal protection implications caused by application of the rule against enhanced value.

A. [28] Inconsistency with the Federal Statute
[29] Under the Supremacy Clause of the United States Constitution, state statutes that conflict with federal statutes are invalid. Brubaker v. Board of County Comm’rs, 652 P.2d 1050, 1054 (Colo. 1982); Housing Auth. v. United States, 980 F.2d 624, 631 (10th Cir. 1992). Federal law preempts state law when Congress expresses clear intent to preempt state law; when there is outright or actual conflict between federal and state law; when compliance with both federal and state law is physically impossible; when there is an implicit barrier within federal law to state regulation in a particular area; when federal legislation is so comprehensive as to occupy the entire field of regulation; or when state law stands as an obstacle to the accomplishment and execution of the full objectives of Congress. Frontier Airlines, Inc. v. United Airlines, Inc., 758 F. Supp. 1399, 1407 (Colo. 1989). However, exercise of federal supremacy is not to be presumed lightly. Brubaker, 652 P.2d at 1055. We must begin by assuming that the historic police powers of the state are not to be superseded by any federal laws or regulations unless that congressional purpose is clearly shown. Dantus v. First Federal Savings Loan Ass’n, 502 F. Supp. 658, 660 (D. Colo. 1980).

[30] In construing statutes to make this determination of Congressional objectives in enacting UMTRCA, we must give effect to the intent reflected in the language of the enactment and the legislative process. Colorado v. Idarado Mining Co., 916 F.2d 1486, 1494 (10th Cir. 1990). Congressional intent is determined primarily from the plain language of the statute, and secondarily from the statute’s legislative history. Mass. v. Martin Marietta Corp., 805 F. Supp. 1530, 1534 (D. Colo. 1990). [31] The court of appeals found that the Colorado rule against enhanced value is an obstacle to the accomplishment and execution of the objectives of UMTRCA. We do not agree. We find that both the plain language of UMTRCA and its legislative history indicate a legislative intent not inconsistent[12] with the Colorado rule against enhanced value which requires that property subject to condemnation proceedings be valued in its unimproved state. Williams, 147 Colo. at 198-202, 363 P.2d at 173-75; § 24-56-117(1)(c).

1. [32] The Language of the Federal Statute
[33] Turning first to the plain language of the statute, the stated purpose of UMTRCA is to clean up and stabilize uranium processing sites to alleviate the danger to the public posed by radiation emitted from mill tailings and other radioactive waste at such sites, 42 U.S.C. § 7901. To this end, the federal government “shall pay 90 per centum of the actual cost of such remedial action, including the actual costs of acquiring such site (and any interest therein) . . . and the state shall pay the remainder of such costs from non-Federal funds.” § 7917(a).

[34] The act addresses two possible cleanup scenarios: cleanup with the consent of the property owner, section 7913(c), and cleanup accomplished after the acquisition of the site by the state in which the property is located, section 7914(a). In deciding whether to proceed by one method or the other, the sole factor enumerated in the statute to which the federal Secretary of Energy and the Nuclear Regulatory Commission must give consideration is the “prevention of windfall profits” to the property owner. Id. If

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the cleanup will result in a windfall to the property owner, the state will be directed to acquire the site, id., with the option to sell the decontaminated property back to the original owner at fair market value. § 7914(e)(2). If the state is not directed to acquire the site, the state may enter into a consent agreement with the property owner which will “releas[e] the United States of any liability or claim thereof” and “hold the United States harmless against any claim . . . arising out of the performance of any such remedial action.” § 7913(c)(2). UMTRCA thus distinguishes between property owners to whom a windfall benefit would accrue and property owners to whom a windfall would not accrue in determining which cleanup scenario to follow.

The Mill argues that

[t]he perceived `windfall’ is the cost associated with the remedial action undertaken by DOE which otherwise could have been borne by the property owner. However, [UMTRCA’s] specific purpose is to obligate DOE to absorb these costs, since `but for’ the Federal contracts which gave rise to the tailings which contaminate these sites, the properties would likely be free from uranium contamination.

[35] According to The Mill, the admonition against windfall profits in section 7914(a) is merely an attempt to limit costs. It does not mandate differential treatment of property owners whose property is remediated by consent and those whose property is acquired by the state before remediation. [36] UMTRCA does not define “windfall profits.” Neither the Department of Energy nor the Nuclear Regulatory Commission has issued regulations enunciating the factors on which it bases its determination to require a state to acquire a processing site, or elaborating how “windfall profits” may be identified. Thus, we must interpret the term without statutory or regulatory guidance. [37] In reading a statute we are required to adopt an interpretation that gives “consistent, harmonious and sensible effect” to all of the statute’s provisions. Colorado State Bd. of Medical Examiners v. Saddoris, 825 P.2d 39, 42 (Colo. 1992) (citation omitted). Furthermore, the court must give words their commonly accepted and understood meaning. East Lakewood Sanitation Dist. v. District Court, 842 P.2d 233, 235 (Colo. 1992). [38] The Mill’s interpretation fails to “sensibly” and “harmoniously” construe the statute. First, if the windfall profit addressed by UMTRCA is merely the cost of remedial action, including acquisition costs, then it would be impossible to consider “prevention” of windfall profits as required by section 7914, since all cleanup effort would result in some windfall to the property owner. The Secretary of Energy and the Nuclear Regulatory Commission could only consider “limitation” of windfall profits. Second, to treat “windfall profits” as the cost of cleanup, as The Mill recommends, would read consensual cleanup under section 7913(c) out of the statute. Since all remedial action would result in some windfall profit, prevention of which is the sole enumerated factor for consideration under section 7914(a), presumably the Secretary of Energy and the Nuclear Regulatory Commission would require acquisition of most, if not all, sites. Finally, The Mill’s interpretation also fails to acknowledge that property owners may benefit not only from avoiding the cost of cleanup (including future liability arising from on-site pollution), but also from the increased value of the property after the government-funded cleanup is complete. While the statute clearly is designed to require federal and state government to bear the cost of cleanup, there is no evidence that it was intended to provide these secondary benefits to landowners as well. Accordingly, we must identify a satisfactory alternative construction. [39] A “windfall” is commonly understood to mean “an unexpected or sudden gain or advantage.” Webster’s Third New International Dictionary 2619-20 (1986). “Profit,” in the context of financial matters such as these, generally means the “the excess of returns over expenditure in a transaction or series of transactions.” Id. at 1811. Thus, “windfall profit” must occur where a transaction produces some unexpected excess of returns over expenditures. In the context of this statute, the transaction in question must be the acquisition of property by the state

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since, under section 7914(a), it is “[i]n determining whether to require the State to acquire a designated processing site or interest therein, [that] consideration shall be given to the prevention of windfall profits.” § 7914(a) (emphasis added).

[40] Under this definition, windfall profits would accrue to a property owner as a result of cleanup only where the property owner purchased the property in its contaminated state at a price which reflected the presence of contamination and then, without making any expenditures for cleanup, could resell the property, or interest therein, at a price reflecting an increase in value due to the cleanup. Such an increase in market value due to cleanup would necessarily be unexpected, and thus a “windfall,” because if government-funded cleanup plans had been publicly known, the market price of the property in a contaminated state would have been comparable to that of similar, uncontaminated property. [41] Not all cleanups would result in such a windfall to the property owner. For example, where the property owner purchased the tract in an uncontaminated state before the milling operations took place pursuant to federal contracts, cleanup of the property merely returns the property to its state at the time of initial purchase.[13] The same would be true where the property owner purchased the tract after the decision to take remedial action had been made or after remedial action had begun, so that the purchase price reflected the decontaminated value of the property. Presumably, in these circumstances the Secretary of Energy and the Nuclear Regulatory Commission would not require the state to acquire the processing site prior to performing remedial action. [42] The rule against enhanced value is not inconsistent with UMTRCA’s policy of preventing windfall profits to the property owner. In fact, the rule furthers UMTRCA policy. If the property owner were allowed to collect the value of the property in its decontaminated state, the property owner would not only be spared the expense of the cleanup, but would also receive the increase in market value resulting from the cleanup. While the statute does not require property owners to pay for the cleanup itself, as indicated by placing the full cost on the federal and state governments in section 7917(a), the rule against enhanced value assures that the property owner cannot collect through condemnation proceedings the “windfall profits” that state acquisition of the property was intended to prevent.

2. [43] The Legislative History of the Federal Statute
[44] The legislative history of UMTRCA does not define “windfall profits,” or address the criteria for acquisition of processing sites. However, nothing in the legislative history indicates that the Colorado rule against enhanced value is inconsistent with UMTRCA. In its “Section-by-Section Analysis and Committee Comments,” House Report No. 1480 states that the “affected State [shall] acquire the processing site before remedial action is initiated if such acquisition is determined appropriate by the Secretary and the NRC.” H.R. Rep. No. 1480(II) at 37, reprinted in 1978 U.S.C.C.A.N. 7464. The Report specifically indicates that “[s]uch acquisition is to be accomplished pursuant to State law.” Id. This reference to state law indicates that Congress intended for the state to utilize the same policies and

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procedures in this context as it uses in other types of land acquisition. In Colorado, the rule against enhanced value is generally applicable to the acquisition of land by the state in other contexts. See § 24-56-117 (“Any state agency or political subdivision of the state which acquires real property for a program or project for which federal financial assistance will be available to pay all or any part of the cost of such program or project shall comply with the following policies:”); Williams, 147 Colo. at 198-202, 363 P.2d at 173-75.

[45] The committee also noted that where cleanup is accomplished by consent,

the property owner will benefit from the voluntary remedial action provided by this act. Clearly, the committee does not want to find that at some later date the United States is faced with a claim from such owner, his heirs, successors or assigns concerning such remedial action or arising from such action.

[46] H.R. Rep. No. 1480(II) at 37, reprinted in 1978 U.S.C.C.A.N. 7464. Thus, the committee viewed the waiver of liability that is part of a consent agreement to be at least partial consideration for the benefit that accrues to the property owner. Under the interpretation urged by The Mill, the property owner would receive not only the benefit of the cleanup and the attendant increase in property value, but would also avoid providing a waiver releasing the United States from liability which otherwise would have been required if the site had been decontaminated under a consent agreement. Such an interpretation would create every incentive for a property owner to resist consensual cleanup, force the state to condemn the processing site in order to perform remedial action, and thus drive up program costs. Since the committee was “concerned about the cost of acquisition under this section and expect[ed] that it be utilized only when necessary,” H.R. Rep. No. 1480(II) at 38, reprinted in 1978 U.S.C.C.A.N. 7465, such a construction is clearly contrary to the legislative intent of UMTRCA as expressed in the Act’s legislative history. Application of the rule against enhanced value would eliminate this adverse incentive and thus be more consistent with Congressional intent.

B. [47] Equal Protection
[48] The court of appeals found that applying traditional condemnation rules, such as the rule against enhanced value, to property acquisitions under UMTRCA resulted in disparate treatment of similarly-situated property owners. This result, the court found, is “further evidence that the traditional enhancement rule was not intended to apply under UMTRCA.” The Mill III, 868 P.2d at 1105. Because we find that property owners whose property is subject to condemnation proceedings and property owners whose property is subject to consensual remedial cleanup are not similarly situated, we disagree.

[49] The equal protection guarantees under the Colorado and United States constitutions assure like treatment of all who are similarly situated. Colo. Const. art. II, § 25; U.S. Const. amend. 14.; Mayo v. National Farmers Union Property and Casualty Co., 833 P.2d 54, 57 (Colo. 1992). If persons alleging disparate treatment are not similarly situated, the equal protection challenge to a statute must fail. Western Medical Lath, Inc. v. Acoustical Constr. Supply, Inc., 851 P.2d 875, 880 (Colo. 1993). [50] As discussed above, the decision to acquire property, as opposed to entering into a consensual arrangement for cleanup, is based on the prevention of windfall profits to the property owner. By agreement with the federal government, the state is required to acquire only those processing sites where the Secretary of Energy and the Nuclear Regulatory Commission already have made a threshold determination that the owners would stand to make a windfall profit if remedial action were to proceed under a consensual agreement. This finding alone indicates that the two groups of property owners are not similarly situated. Accordingly, any equal protection challenge to the application of the rule against enhanced value must fail. [51] After this examination of the language and legislative intent of UMTRCA, we conclude

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that the rule against enhanced value codified in section 24-56-117(1)(c) is fully consistent with Congressional intent in enacting UMTRCA.

IV.
[52] For the foregoing reasons, we find that 1983 correspondence between CDH and The Mill did not constitute a regulatory taking in violation of the United States and Colorado constitutions. We also find that application of the Colorado rule against enhanced value in condemnation proceedings is not contrary to the intent of UMTRCA, and thus, that the stipulation of zero value entered into by The Mill and CDH may stand. Accordingly, we (1) reverse the court of appeals’ holdings on both issues, (2) return the case to the court of appeals for remand to the district court with instructions to dismiss The Mill’s regulatory taking and estoppel claims, and (3) return the case to the court of appeals for reinstatement of the judgment of the Gunnison County District Court granting title to the property to CDH.

[53] JUSTICE ERICKSON specially concurs. [54] JUSTICE SCOTT dissents. [55] JUSTICE ERICKSON specially concurring: [56] We granted certiorari to review both the regulatory taking and eminent domain rulings in The Mill v. State of Colorado, Department of Health, 868 P.2d 1099 (Colo.App. 1993).[14] I agree with the majority that the court of appeals erred in finding a regulatory taking of The Mill’s property. I also agree that the enhanced value statute, section 24-56-117(1)(c), 10B C.R.S. (1988), is dispositive in this case in determining whether the decontaminated value of a property should be considered for purposes of eminent domain pursuant to the Uranium Mill Tailings Radiation Control Act (UMTRCA), 42 U.S.C. §§ 7901–7942 (1993 Supp.). I concur in the majority opinion and write separately on the applicability of the enhanced value rule in this case.

I
[57] The 61-acre parcel of land (property) at issue in this case consists of a 25-acre mill yard and a 36-acre tailings pile. Pursuant to an Atomic Energy Commission (AEC) license, the property was operated as a uranium processing mill and for storage of uranium mill tailings from the late 1950s until 1962. In 1968, the AEC delegated regulatory authority of the radioactive materials and the AEC license to the State of Colorado, which terminated the license for the property in issue that adjoins the Gunnison Airport.

[58] The Mill purchased the property in 1973. At that time, the Colorado Department of Health (CDH) had imposed no restrictions on the use of the property. Radioactive contamination of the mill yard was found in 1976. In 1978, Congress enacted UMTRCA to decontaminate twenty-two inactive uranium mills to protect the public from the health hazards associated with the radioactivity of uranium mills. After radioactive contamination of the property was confirmed in 1980 and 1982, The Mill leased the property to O.C. Coal Company in 1983. The Mill notified CDH of the lease agreement, and CDH responded with a letter advising The Mill and O.C. Coal of safety precautions that were recommended because of the radioactive contamination of the property. [59] O.C. Coal terminated the lease in 1984. The Mill contends that the CDH letters setting forth safety requirements caused O.C. Coal to terminate the lease and brought an action against CDH in 1986, claiming a regulatory taking. While the regulatory takings case was on appeal, CDH initiated a condemnation proceeding in accordance with UMTRCA and the applicable Colorado statute. § 25-11-303(1)(d), 11A C.R.S. (1989 1994 Supp.). In the condemnation action under UMTRCA, the parties stipulated that the market value of the property in its contaminated state was zero, and the trial court vested title to the property in CDH. The

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Mill appealed both the regulatory taking and the condemnation decisions to the court of appeals.

[60] The court of appeals consolidated the regulatory takings case with the eminent domain case. In the consolidated appeal, the court of appeals held that a regulatory taking had occurred and set aside the stipulation of the parties that the fair market value of the property in its contaminated state was zero. On remand, the court of appeals directed that fair market value be determined based on the decontaminated value of the property, and ordered a new determination of just compensation.

II
[61] In Department of Health v. Hecla Mining Co., 781 P.2d 122, 125 (Colo.App. 1989), the court of appeals stated: “We do not find support in the federal law for [the] assertion that the purpose of [UMTRCA] is to meet an obligation to remedy government-initiated contamination.”[15] The legislative history of UMTRCA reflects a congressional intent not to overburden either the federal or state governments with the costs of clean-ups.[16]
Rather than protecting the investment of the property owner, Congress’ concern was to minimize the costs of the program in cleaning up radioactive uranium sites.[17]

[62] Hecla set out the key elements of the legislative history and stated:

The legislative history shows that the Radiation Control Act was enacted due to concern over the health threat posed by unstable and uncontrolled inactive uranium mill tailings and not to meet any legal obligation on the part of the federal government to remedy the hazardous situations at such sites. Concern over costs of the program prompted Congress to provide for state acquisition of mill sites, particularly if decontamination would result in windfall profits to an owner who retained the site after decontamination.

[63] Hecla, 781 P.2d at 124. The court of appeals in Hecla held that in a condemnation proceeding, property must be valued in its present condition, without regard to the governmental purpose supporting the necessity for condemnation or the radioactive contamination of the property. Accord, Williams v. City and County of Denver, 147 Colo. 195, 363 P.2d 171 (1961); § 24-56-117(1)(c). [64] In a condemnation proceeding, the property taken is valued at its fair actual cash market value at the time of trial or when the property is taken. § 38-1-114, 16A C.R.S.

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(1982 1994 Supp.); see Mulford v. Farmers’ Reservoir Irrigation Co., 62 Colo. 167, 161 P. 301 (1916). Market value is the price a property will bring when it is offered for sale by one who desires but is not obligated to sell, and is bought by one who desires, but is under no necessity to buy the property. Dep’t of Highways v. Schuloff, 167 Colo. 72, 445 P.2d 402 (1968). The value of the land taken is based on present conditions and not on the future development of the property. Id.

[65] When Congress enacted UMTRCA, it directed that acquisitions be accomplished pursuant to state law. H.R. Rep. No. 95-1480 (II), 95th Cong., 2d Sess. at 37 (1978), reprinted in 1978 U.S.C.C.A.N. 7464. When the Colorado General Assembly agreed to the financial commitments of UMTRCA and authorized the CDH to participate in its implementation, it specifically directed that such acquisitions be conducted pursuant to the eminent domain laws of Colorado. § 25-11-303(1)(d). In particular, the General Assembly directed that the enhanced value criteria in section 24-56-117(1)(c), be followed when condemning property under UMTRCA. Section 24-56-117(1)(c) provides in relevant part: “Any decrease or increase in the fair market value of real property prior to the date of valuation caused by the public improvement for which such property is acquired . . . shall be disregarded in determining the compensation for the property.” Section 24-56-117(1)(c) is the statutory codification of the rule against enhanced value. See Williams, 147 Colo. at 199-200, 363 P.2d at 173-74. The court of appeals dismissed section 24-56-117 as “general policy” that must yield to what the court stated was the “ends” of UMTRCA (protecting the owner’s investment). The Mill, 868 P.2d at 1106. [66] The UMTRCA is not an exception to the enhanced value rule, but rather incorporates the rule into its framework. In Hecla, the court of appeals held that evidence of the decontaminated value of the land, “because it fails to reflect the actual condition of the property at the time of the taking, is necessarily speculative or prospective and thus inadmissible.” Hecla, 781 P.2d at 126. The court of appeals in the present case declared that Hecla was dispositive of value determination of fair market value and of the issues raised at the immediate possession hearing, but held that the enhanced value rule in Williams was inapplicable and that Hecla would not be followed as inconsistent with the scheme established by UMTRCA. The court of appeals misinterpreted UMTRCA, and erred in not following Hecla.[18] [67] The enhanced value statute is dispositive of the condemnation issue. The contaminated value of the land was zero. The Mill, in acquiring the property, knew of the property’s prior use as a uranium processing mill, which contaminated both the building and the soil. The Mill was effectively limited in the use it could make of its land because of radioactive contamination. Such a limitation on use is not compensable, however, because the only value of The Mill’s property would be as the result of improvements effected by a clean-up that would restore the land to its former condition. The property was contaminated when it was acquired by The Mill. Because the cost of decontaminating the property exceeds the value of the property after the clean-up, the value of the property is zero, and the rule against enhanced value is applicable.

III
[68] The cost of decontaminating The Mill’s property is borne by the state and federal governments. A consideration of the property’s decontaminated state for purposes of calculating fair market value would grant The Mill more than it acquired when it purchased the property in 1973, and would grant the landowner “windfall profits,” profits which Congress intended to avoid in enacting UMTRCA.

[69] Because an application of the rule against enhanced value is in accordance with congressional intent and the intent of the General

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Assembly, the court of appeals erred in ordering a determination of the property’s decontaminated value and in not following Hecla. The court of appeals also erred in setting aside the parties’ stipulation that the property had no value in its present condition.

[70] JUSTICE SCOTT dissenting: [71] The majority holds that The Mill, the owner of real property, did not have “reasonable investment-backed expectations” as to the contemplated use of the “mill yard” because “an extensive regulatory scheme [was] in place at the time of investment,” maj. op. at 8-10, and, as a consequence, any taking by the State does not require compensation. Because I believe such a rule impermissibly blurs the distinction between takings of real and personal property and improperly permits takings without compensation in violation of constitutional mandates, and because I believe the record does not support a conclusion that The Mill’s expectations were “highly unreasonable,” I respectfully dissent. [72] Moreover, because the lower court’s determination that The Mill was deprived of its entire economic interest in the property is supported by the record, I would hold the actions of the State compensable, assuming The Mill can establish a regulatory taking premised upon its compliance with directives set forth in agency letters and similar communications. Accordingly, because the analysis I would employ requires that we examine the issues the majority fails to address, I respectfully dissent.[19]

I
[73] In 1973, respondent, The Mill, purchased a lot in Gunnison, Colorado, which had previously been used as a uranium mill and disposal site for uranium mill tailings. The lot was divided into two separate parcels: the “tailings pile” and the “mill yard.” Prior to purchasing the lot, The Mill searched the records of the Colorado Department of Health (CDH) and discovered that in 1971, the State of Colorado had removed the mill yard from licensure, authorized its unrestricted use, and considered the mill yard not contaminated and free for lawful uses such as those contemplated by The Mill.[20] Based on its review of the information in CDH’s files, which indicated that the mill yard parcel was decontaminated and safe for unrestricted use, The Mill purchased the subject property in July of 1973.

[74] From 1973 to 1978, CDH conducted various tests of the tailings pile located on property adjacent to The Mill. At some point, CDH also conducted tests of the mill yard. In 1976, CDH found radioactive contamination throughout the mill yard. At that time, CDH informed The Mill of its finding and advised it to take precautionary measures with regard to the mill yard. Both the mill yard and the tailings pile were designated for radiation clean-up under the Uranium Mill Tailings Radiation Control Act of 1978, Pub.L. No. 95-604, 42 U.S.C. § 7901 (1991) (“UMTRCA”). The Mill was informed that it was a “candidate for remedial action” in 1978. [75] In 1983, The Mill notified CDH that it had leased the mill yard to O.C. Coal. CDH then sent several letters to both The Mill and O.C. Coal informing them of the “existing mill yard radioactive contamination” and the limited uses to which the mill yard could be put. The trial court found that there had been a taking because of the letters and other actions of CDH, and awarded compensation in the amount of $200,000, based on a total loss of use, rather than a loss of property valuation.

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[76] The court of appeals affirmed the trial court’s ruling that the CDH correspondence amounted to a total regulatory taking. A majority of this court now reverses, and, in effect, ignores the distinction so clearly drawn between real and personal property in federal takings jurisprudence and, in its place, holds that the adoption of “an extensive regulatory scheme” trumps the fundamental constitutional right to just compensation as a consequence of a government taking. It is to that conclusion of the majority that I take exception.

II
[77] In Lucas v. South Carolina Coastal Council, 112 S. Ct. 2886
(1992), the United States Supreme Court reaffirmed its holding in Pennsylvania Coal Co. v. Mahon, 260 U.S. 393 (1922), where Justice Holmes, writing for the Court, opined that “while property may be regulated to a certain extent, if regulation goes too far it will be recognized as a taking.” Lucas, 112 S. Ct. at 2893
(citing Mahon, 260 U.S. at 415). Writing for the majority in Lucas, Justice Scalia acknowledged that the seventy years of Supreme Court takings jurisprudence has been essentially by ad hoc, factual inquiries. The Court has, however, found regulatory takings “compensable without case-specific inquiry into the public interest advanced in support of the restraint” in instances in which it has “found . . . regulation [by the state] denied all economically beneficial or productive use of land.” Id. (citing Agins v. Tiburon, 447 U.S. 255, 260 (1980); Nollan v. California Coastal Comm’n, 483 U.S. 825, 834 (1987); Keystone Bituminous Coal Ass’n v. DeBenedictis, 480 U.S. 470, 495 (1987); Hodel v. Virginia Surface Mining Reclamation Ass’n, Inc., 452 U.S. 264, 295-96 (1981) (footnote omitted)).

[78] In fact, the Court has categorically held that takings which deny all economically beneficial use require compensation. Noting this categorical rule, Justice Scalia suggested the justification for the rule was “simply, as Justice Brennan suggested, that total deprivation of beneficial use is, from the landowner’s point of view, the equivalent of a physical appropriation.” Lucas, 112 S. Ct. at 2894 (citing San Diego Gas Elec. Co. v. San Diego, 450 U.S. 621, 652 (1981) (Brennan, J., dissenting)). Essentially, then, Justice Scalia opined, “when the owner of real property has been called upon to sacrifice all economically beneficial uses in the name of the common good, that is, to leave his property economically idle, he has suffered a taking.” Lucas, 112 S. Ct. at 2895. [79] On appeal to this court, CDH argued, and the majority agreed, that the court of appeals erred by failing to apply the exception stated in Lucas that no compensation is due if the restrictions merely duplicate the result that could have been achieved in the courts through nuisance or property law. Lucas, 112 S. Ct. at 2901. That exception only applies, however, where the “owner is barred from putting land to a use that is proscribed by those existing rules or understandings.” Id. The Lucas Court established that “[w]here the State seeks to sustain regulation that deprives land of all economically beneficial use, we think it may resist compensation only if the logically antecedent inquiry into the nature of the owner’s estate shows that the proscribed use interests were not part of his title to begin with.” Id. at 2899 (emphasis added). At the time The Mill purchased the land in 1973, the contemplated use of the land (storage) was not proscribed by any rules or understanding that existed at that time. The anticipated investment-backed use of The Mill property was not unlawful, since the State itself had declared the property authorized for unrestricted use. By its actions in 1983, however, the State was in effect changing the uses and hence, in effect, understandings that reflect a more developed understanding of the hazards of radiation — all of which occurred years after the purchase. Thus, the Lucas exception that “the proscribed use interests were not part of [The Mill’s] title to begin with,” i.e. in 1973, has no application to the case at hand.

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[80] Importantly, despite its early infatuation with “harmful or noxious uses,” or reliance upon nuisance law, the Lucas Court reversed the South Carolina Supreme Court because its judgment was premised upon a determination that the property owner’s proposed use was a nuisance, harmful to the public, and, as a consequence, would render a taking not subject to compensation. Lucas, 112 S. Ct. at 2897-98. Instead, the Court reasoned, “noxious-use logic cannot serve as a touchstone to distinguish regulatory `takings’ — which require compensation — from regulatory deprivations that do not require compensation.” Id. at 2899. Continuing, the Court held: “A fortiori the [state’s] recitation of a noxious-use justification cannot be a basis for departing from our categorical rule that total regulatory takings must be compensated.” Id. (emphasis added). The majority fails to take this holding into account.[21]

III
[81] The United States Supreme Court has identified several factors that should be taken into account when determining whether a governmental action amounts to a taking. Among those factors are “the character of the governmental action, its economic impact, and its interference with reasonable investment-backed expectations.” Pruneyard Shopping Ctr. v. Robins, 447 U.S. 74, 83 (1980). I would agree with the majority that the reasonable investment-backed expectations of the regulated party is a dispositive factor in this case. I would disagree, however, with the majority’s conclusion that The Mill’s expectations in 1971 were unreasonable, in light of the CDH determination that the property was not contaminated and was available for unrestricted use. With respect to owner expectations, the Lucas Court stated:

Where the State seeks to sustain regulation that deprives land of all economically beneficial use, we think it may resist compensation only if the logically antecedent inquiry into the nature of the owner’s estate shows that the proscribed use interests were not part of his title to begin with. This accords, we think, with our “takings” jurisprudence, which has traditionally been guided by the understandings of our citizens regarding the content of and the State’s power over the “bundle of rights” that they acquire when they obtain title to property.

[82] Lucas, 112 S. Ct. at 2899 (emphasis added). Continuing the concept of owner expectations, the Court noted a distinction between personalty and realty:

And in the case of personal property, by reason of the State’s traditionally high degree of control over commercial dealings, he ought to be aware of the possibility that new regulation might even render his property economically worthless. . . . In the case of land, however, we think the notion . . . that title is somehow held subject to the “implied limitation” that the State may subsequently eliminate all economically valuable use is inconsistent with the historic compact recorded in the Takings Clause that has become part of our constitutional culture.
Where “permanent physical occupation” of land is concerned, we have refused to allow the government to decree it anew (without compensation) no matter how weighty the asserted “public interest” involved. . . . We believe similar treatment must be accorded confiscatory regulations,

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i.e., regulations that prohibit all economically beneficial use of land. Any limitation so severe cannot be newly legislated or decreed (without compensation), but must inhere in the title itself . . . already place[d] upon land ownership.

[83] Id. at 2899-900 (citations and footnotes omitted) (emphasis added). The Court’s analysis is consistent with the sharp distinction historically drawn between the treatment of real property and personal property. See Property Tax Administrator v. Production Geophysical, 860 P.2d 514, 519 (Colo. 1993). For example, we apply the statute of frauds to interests in real property but not to interests in personal property (§ 38-10-108, 16A C.R.S. (1963)) and specific performance is generally directed in contracts concerning the sale of land but not in contracts concerning personal property. See, e.g., Atchison v. City of Englewood, 193 Colo. 367, 568 P.2d 13 (1977); Radetsky v. Palmer, 70 Colo. 146, 199 P. 490 (1921). The basis for drawing such a distinction is that every parcel of real property is unique. See Mt. Sneffels Co. v. Estate of Scott, 789 P.2d 464, 466
(Colo.App. 1989). Hence, when the property interest is that associated with the ownership of land, as opposed to personalty, our takings analysis must be guided by the landowner’s understandings regarding the bundle of rights he or she acquires with the title to the property. Id. at 2899. To the contrary, here, the majority assumes that the existence of a comprehensive regulatory scheme requires that we impute to land owners at the time of purchase, today’s knowledge of the harm caused by radiation. Such owner expectations are unreasonable years before the effects of radiation are fully understood; the majority’s position does not comport with our previous treatment of owner expectations. The inconsistency of the majority’s position is reflected by its statement in footnote 4. Maj. op. at 9-10 n. 4.[22] [84] There have been three important cases decided in this jurisdiction which deal with the concept of owner expectations. See Ford Leasing v. Board of County Comm’rs, 186 Colo. 418, 528 P.2d 237 (1974); Nopro Co. v. Cherry Hills Village, 180 Colo. 217, 504 P.2d 344 (1972); Gold Run, Ltd. v. Board of County Comm’rs, 38 Colo. App. 44, 554 P.2d 317 (1976). In each of these three cases, the harm was self-inflicted. For example, in Nopro, a zoning case, the court held “Nopro’s land investment was made in full knowledge of the zoning limitations. It took the calculated risk that it could break the zoning use barrier and thereby double the profit from its investment.” Nopro, 180 Colo. at 227, 504 P.2d at 349. The court concluded “if hardship exists . . . it was incurred voluntarily by the choice of Nopro and was self-inflicted.” Id. Likewise, in Ford Leasing and Gold Run, the court emphasized the fact that the owner bought the property having full knowledge of existing restrictive zoning, thus rendering a hardship self-inflicting. [85] In this case, the majority asserts that The Mill was on notice that the radioactive materials present on the property were highly regulated at both the state and federal level, stating “the facts stipulated to by the parties in the regulatory taking action indicated that the entire property, including the mill yard, had been subject to federal licensing and regulation since 1962 due to the presence of radioactive contamination.” Maj. op. at 11. The majority maintains that even in 1973, when The Mill purchased the lot, there “existed an awareness that the hazards posed by radiation were potentially severe.” Id. The majority’s observation fails to fairly take into account two important realities: (1) in 1973, the extent of the potential hazards posed by radiation was not fully understood; and (2) The Mill had no knowledge of the site’s

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contamination at the time of its purchase due to its reliance upon CDH findings that the mill yard was uncontaminated and available for uses contemplated by The Mill.[23] These and other facts found by the trial court cannot be ignored. Where the findings of the trial court are supported by the record, those findings must be accepted on review unless they are clearly erroneous. M.D.C./Wood, Inc. v. Mortimer, 866 P.2d 1380, 1384 (Colo. 1994). Because we have consistently disapproved of the substitution of new factual findings by reviewing courts for those made by the trial court, Page v. Clark, 197 Colo. 306, 313, 592 P.2d 792, 796 (1979), and because the record clearly supports the findings of the trial court, it would be inappropriate on review to fail to take such facts into consideration.

[86] The facts of this case deal with what was described during the trial as “a regulatory framework which has evolved over time to deal with our increase in knowledge of radiation and its dangers.” As found by the trial court, the need to clean up areas such as the Gunnison uranium mill site was not “an overriding concern” in the early 1970’s. Testimony shows that in 1971, cleanup efforts were done related to buildings and equipment, with an emphasis at that time on alpha contaminations. That same testimony indicates that since 1971, concerns have grown for other types of radiation contamination, including radon contamination, radon progeny called radon daughters and gamma radiation. Although there were proper tools and equipment for testing for these types of other radiation problems in 1971, there was not a sufficient concern at that time for the dangers from these other radiation hazards. Thus, they were not part of the examination that was done prior to the delicensure in 1971. In fact, testimony indicated that in 1971, when the property in question was removed from licensure, CDH did not even consider it important enough to regulate the tailings pile, let alone the mill yard. Today, on the other hand, according to testimony which was introduced at trial, radiation is considered potentially harmful in any degree. [87] Before purchasing the property in 1973, The Mill fully researched the possibility of contamination on that site by reviewing CDH files in February of 1973. The Mill found that the site had been regulated at one time, but that the State had delicensed the parcel, representing that it was not contaminated, and authorizing its unrestricted use. After regulatory examination, the State demonstrated its approval of the storage use contemplated by The Mill, as well as any other reasonable uses. The record reflects that The Mill purchased the property based on an expectation created by the government. Given the fact that “scientific knowledge concerning the hazards of radiation was not as sophisticated as it is now,” maj. op. at 10, the State’s representations were conceivable. It follows that The Mill’s reliance on those representations was reasonable. Thus, in 1973, despite the fact that the mill yard remained subject to federal regulation, The Mill’s contemplated use of the property for storage, a use also contemplated by government officials after regulatory examination, was reasonable. [88] It is not disputed that the mill yard is contaminated and should be regulated by the state. The issue comes down to who should bear the cost of the government’s intervention — the state or the private party. When a citizen relies on government records and the government later changes its position, the only logical solution is for the government to bear any costs involved.

IV
[89] I would therefore find that the investment-backed expectations of The Mill based upon information from CDH were not highly unreasonable. Since the trial court’s findings with respect to the remaining material facts are supported by the record, I would find a potentially compensable taking requiring that we determine issues not reached by the

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majority. For the foregoing reasons, I respectfully dissent.