Plaintiff-appellant V-l Oil Company (“V-1”) appeals an adverse summary judgment and an award of attorneys’ fees rendered by the district court. We affirm.
BACKGROUND
The district court, V-1 Oil Co. v. Wyoming, 696 F.Supp. 578 (D.Wyo.1988), found the following undisputed facts: Defendant-appellee Steven P. Gerber is an official of defendant-appellee the Wyoming Department of Environmental Quality (“DEQ”), an agency of defendant-appellee the State of Wyoming. He was aware that previous investigations of the V-l Oil Station in Lander, Wyoming revealed that it was a source of groundwater pollution. On April 28, 1988, he noticed, while driving by, that the concrete above the station’s underground storage tanks was being removed. Twice he tried to find out what was being done, and twice he was refused permission to enter the property. Informed of this, a senior assistant attorney general tried to obtain a court order allowing Gerber to inspect the premises, but no judge was available. The attorney then advised Gerber that the Wyoming Environmental Quality Act (“the Act”) authorized him to conduct a warrantless search. That evening, Gerber, accompanied by a policeman and the Lander City Attorney, returned to the gas station, visually inspected the tanks, and took a soil sample from the exposed area. Id. at 579-80.
On May 27, 1988, V-l filed suit under 42 U.S.C. § 1983, alleging that the search violated V-l’s Fourth Amendment rights. The district court granted summary judgment for each defendant. DEQ and the State were dismissed because of their Eleventh Amendment immunity from suit in federal court. Id. at 580. V-l does not appeal this holding. Gerber was deemed entitled to judgment because the statute authorizes warrantless searches, id. at 581, such searches are constitutional, id. at 582, and Gerber’s conduct fell within his qualified immunity because it violated no clearly established right, id. at 583. The judgment in favor of Gerber is the subject of No. 88-2691.
The defendants then filed a motion for attorneys’ fees under 42 U.S.C. § 1988. They documented the total time spent on the case, but did not state how many hours were spent on each particular issue. See R. Vol. I at Tabs 23, 32, 35. In an unpublished order, the court found that V-l’s claims against the State and DEQ were frivolous and that for a time V-l had relied upon an outdated version of the Act, and decided to award the defendants fees for time spent addressing those issues. Order, Jan. 19, 1989, R. Vol. I at Tab 37, at 2-3. V-l does not appeal these conclusions. The court then estimated that the defendants spent twenty-two hours responding to these claims, and awarded fees based upon that estimate. Id. at 2. Whether the court was entitled to estimate how much time was spent on the issues upon which it awarded attorneys’ fees, or instead should have required that the movants’ records be broken down by issue, is the subject of No. 89-8011.
DISCUSSION
I. WARRANTLESS SEARCH
A. Whether The Wyoming Environmental Quality Act Authorizes Warrantless Searches
Gerber claims that section nine of the Act authorizes warrantless inspections of suspected sources of pollution. That section empowers certain officers, including Gerber, to
“enter and inspect any property, premise or place, except private residences, on or at which an air, water or land pollution source is located or is being constructed or installed.... Persons so designated may ... inspect any monitoring equipment or method of operation required to be maintained pursuant to this act ... for the purpose of investigating actual or potential sources of air, water or land pollution and for determining compliance or noncompliance with this act....”
Wyo.Stat. § 35-ll-109(a)(vi) (1988).
V-l contends that this section did not authorize the search which took place, *1485either because it does not authorize war-rantless searches or because it only authorizes warrantless searches of monitoring equipment and methods of operation required by the Act, and underground storage tanks do not fall into this category. We disagree.
V-l’s first contention seems to be “that a warrant was required since the statute nowhere mentions the words ‘warrantless search.’ ” V-l Oil Co. v. Wyoming, 696 F.Supp. at 581. Courts do not infer a warrant requirement from statutes which authorize inspections but do not discuss the necessity of warrants. Instead, a bare authorization for inspections is construed to authorize warrantless inspections. See, e.g., Exotic Coins, Inc. v. Beacom, 699 P.2d 930, 940 (Colo.), appeal dismissed, 474 U.S. 892, 106 S.Ct. 214, 88 L.Ed.2d 214 (1985); State v. Williams, 8 Kan.App.2d 14, 648 P.2d 1156, 1160-61 (1982); State v. Galio, 92 N.M. 266, 587 P.2d 44, 47 (Ct.App.1978); State ex rel. Industrial Comm’n v. Wasatch Metal & Salvage Co., 594 P.2d 894, 897 (Utah 1979). We see no reason to believe that the Wyoming Supreme Court would construe this statute any differently.
Second, because the Wyoming Environmental Quality Act should be construed liberally, People v. Platte Pipe Line Co., 649 P.2d 208, 212 (Wyo.1982); Roberts Constr. Co. v. Vondriska, 547 P.2d 1171, 1182 (Wyo.1976), we hold that underground gasoline storage tanks are a “method of operation required to be maintained pursuant to th[e] act.” The phrase “pursuant to” has a broader meaning than the word “by.” See Black’s Law Dictionary 647 (abr. 5th ed. 1983). The statute authorizes the inspection, not only of facilities which the Act specifically requires, but also of any mechanism which is necessary to avoid committing a violation. Without proper storage equipment, gasoline could escape and pollute the surrounding land and groundwater. This is prohibited by, inter alia, Wyo.Stat. § 35-11-301 (1988). Therefore, the Act authorized Gerber to inspect V-l’s tanks.
B. Whether a Warrantless Search Pursuant to the Wyoming Environmental Quality Act Is Constitutional
The warrant requirement of the Fourth Amendment applies to commercial premises. See v. City of Seattle, 387 U.S. 541, 543, 87 S.Ct. 1737, 1739, 18 L.Ed.2d 943 (1967). An exception to this requirement has developed, however, for “pervasively regulated businesses],” United States v. Biswell, 406 U.S. 311, 316, 92 S.Ct. 1593, 1596, 32 L.Ed.2d 87 (1972), or “ ‘closely regulated’ industries,” Marshall v. Barlow’s, Inc., 436 U.S. 307, 313, 98 S.Ct. 1816, 1820, 56 L.Ed.2d 305 (1978) (quoting Colonnade Catering Corp. v. United States, 397 U.S. 72, 74, 90 S.Ct. 774, 776, 25 L.Ed.2d 60 (1970)). To be reasonable, the warrantless inspection of such a business must meet the three-part test enunciated in New York v. Burger, 482 U.S. 691, 107 S.Ct. 2636, 96 L.Ed.2d 601 (1987):
“First, there must be a ‘substantial’ government interest that informs the regulatory scheme pursuant to which the inspection is made....
Second, the warrantless inspections must be ‘necessary to further [the] regulatory scheme.’
Finally, ‘the statute’s inspection program, in terms of the certainty and regularity of its application, [must] provid[e] a constitutionally adequate substitute for a warrant.’ In other words, the regulatory statute must perform the two basic functions of a warrant: it must advise the owner of the commercial premises that the search is being made pursuant to the law and has a properly defined scope, and it must limit the discretion of the inspecting officers. To perform this first function, the statute must be ‘sufficiently comprehensive and defined that the owner of commercial property cannot help but be aware that his property will be subject to periodic inspections undertaken for specific purposes.’ In addition, in defining how a statute limits the discretion of the inspectors, ... it must be ‘carefully limited in time, place, and *1486scope.’ United States v. Biswell, 406 U.S., at 315 [92 S.Ct., at 1596].”
Id. at 702-03, 107 S.Ct. at 2644 (quoting Donovan v. Dewey, 452 U.S. 594, 600, 602, 603, 101 S.Ct. 2534, 2538, 2539, 2540, 69 L.Ed.2d 262 (1981)). The two major questions relevant to the constitutionality of Gerber’s search are whether V-l is pervasively regulated and whether the Act provides a constitutionally adequate substitute for a search warrant.1
1. Whether V-l Is Pervasively Regulated
A pervasively regulated industry is one which has “such a history of government oversight that no reasonable expectation of privacy could exist....” Marshall v. Barlow’s, Inc., 436 U.S. at 313, 98 S.Ct. at 1821 (citation omitted). “[T]he doctrine is essentially defined by ‘the pervasiveness and regularity of the ... regulation’ and the effect of such regulation upon an owner’s expectation of privacy.” New York v. Burger, 482 U.S. at 701, 107 S.Ct. at 2643 (quoting Donovan v. Dewey, 452 U.S. 594, 606, 101 S.Ct. 2534, 2542, 69 L.Ed.2d 262 (1981)). Pervasively regulated industries “represent the ‘exception’ rather than the rule.” Marshall v. Horn Seed Co., 647 F.2d 96, 99 n. 1 (10th Cir.1981) (quoting Marshall v. Barlow’s, Inc., 436 U.S. at 313, 98 S.Ct. at 1820); see also McLaughlin v. Kings Island, 849 F.2d 990, 994 (6th Cir.1988).
Wyoming state law2 requires a license and payment of a fee before one may do business as a gasoline dealer. Wyo.Stat. § 39-6-203(b) (1988). Violation of this requirement is a misdemeanor. Wyo.Stat. § 39-6-213(a) (1988). The price of the gasoline must be displayed conspicuously, Wyo.Stat. § 39-6-205 (1988), and gasoline tax must be collected, Wyo.Stat. § 39-6-209 (1988). However, while gasoline wholesalers and refiners must submit reports and keep special records, Wyo.Stat. §§ 39-6-204, -206, -208 (1989), gasoline dealers face no similar requirement. Under federal law, owners of underground gasoline storage tanks must furnish substantial and detailed information about the tanks and must permit certain inspections3 and monitoring. See 42 U.S.C. §§ 6991-6991i.
In Burger, the Supreme Court held that New York vehicle dismantiers were pervasively regulated because they were subject to the following circumscriptions: the requirement of a license and payment of a fee; the maintenance and availability for inspection of certain records; the display of the operator’s registration number; and the existence of criminal penalties for failure to comply with these provisions. Burger v. New York, 482 U.S. at 704-05, 107 S.Ct. at 2644-45. The aggregation of requirements to which Wyoming gas stations are subject is equally intrusive, so we affirm the district court’s holding that V-l was pervasively regulated.
2. Whether the Statute Provides a Constitutionally Adequate Substitute for a Warrant
The district court concluded, with no explanation, that the Act provided a constitutionally adequate substitute for a warrant. V-1 Oil Co. v. Wyoming, 696 F.Supp. at 582. We disagree. The statute is not so “ ‘comprehensive and defined that the own*1487er of commercial property cannot help but be aware that his property will be subject to periodic inspections undertaken for specific purposes.’ ” Burger v. New York, 482 U.S. at 703, 107 S.Ct. at 2644 (quoting Donovan v. Dewey, 452 U.S. 594, 600, 101 S.Ct 2534, 2539, 69 L.Ed.2d 262 (1981)).
First, because the Act applies to every business in Wyoming, it provides no notice whatsoever to the owner of any particular business that his or her property will be subject to warrantless inspections. The only warrantless administrative searches which have been upheld are those conducted pursuant to narrow statutes which regulate particular industries. Rush v. Obledo, 756 F.2d 713, 718-19 (9th Cir.1985); cf. Marshall v. Barlow’s, Inc., 436 U.S. at 321, 98 S.Ct. at 1825. Administrative searches conducted pursuant to statutes of general applicability require search warrants. See, e.g., Marshall v. Barlow’s, Inc., 436 U.S. at 313-14, 98 S.Ct. at 1820-21 (Occupational Safety and Health Act); See v. City of Seattle, 387 U.S. at 546, 87 S.Ct. at 1741 (Seattle Fire Code); Lone Steer, Inc. v. Donovan, 565 F.Supp. 229, 232 (D.N.D.1982) (Fair Labor Standards Act), rev’d on other grounds, 464 U.S. 408, 104 S.Ct. 769, 78 L.Ed.2d 567 (1984); Western Alfalfa Corp. v. Air Pollution Variance Bd., 510 P.2d 907, 909-10 (Colo.Ct.App.1973) (Colorado Air Pollution Control Act), rev’d on other grounds, 416 U.S. 861, 94 S.Ct. 2114, 40 L.Ed.2d 607 (1974); New Mexico Envtl. Improvement Div. v. Climax Chem. Co., 105 N.M. 439, 733 P.2d 1322, 1323 (Ct.App.1987) (New Mexico Hazardous Waste Act).
Second, the Act provides no “assurance of regularity” of inspections. Donovan v. Dewey, 452 U.S. 594, 599, 101 S.Ct. 2534, 2538, 69 L.Ed.2d 262 (1981). In both Burger, 482 U.S. at 711, 107 S.Ct. at 2648, and Dewey, 452 U.S. at 604, 101 S.Ct. at 2541, the inspections were conducted on a regular basis. The Wyoming Environmental Quality Act leaves inspectors free to inspect any business as often or seldom as he or she pleases. A warrant is required if searches are “so random, infrequent, or unpredictable that the owner, for all practical purposes, has no real expectation that his property will from time to time be inspected by government officials.” Donovan v. Dewey, 452 U.S. at 599, 101 S.Ct. at 2538; see also Serpas v. Schmidt, 827 F.2d 23, 29 (7th Cir.1987) (“To satisfy the ‘certainty and regularity’ requirement, an ‘inspection program must define clearly what is to be searched, who can be searched, and the frequency of such searches.’ ” (quoting Bionic Auto Parts & Sales, Inc. v. Fahner, 721 F.2d 1072, 1078 (7th Cir.1983)), cert. denied, 485 U.S. 904, 108 S.Ct. 1075, 99 L.Ed.2d 234 (1988).
Because the Act does not provide a constitutionally adequate substitute for a warrant, Gerber’s warrantless search violated V-l’s Fourth Amendment rights.
C. Whether Gerber Was Qualiftedly Immune From Suit
Government officials performing discretionary functions have a qualified immunity from suit.
“[Wjhether an official protected by qualified immunity may be held personally liable for an allegedly unlawful official action generally turns on the ‘objective legal reasonableness’ of the action, assessed in light of the legal rules that were ‘clearly established’ at the time it was taken.
The contours of the right must be sufficiently clear that a reasonable official would understand that what he is doing violates that right. This is not to say that an official action is protected by qualified immunity unless the very action in question has previously been held unlawful, but it is to say that in the light of pre-existing law the unlawfulness must be apparent.”
Anderson v. Creighton, 483 U.S. 635, 639, 640, 107 S.Ct. 3034, 3038, 3039, 97 L.Ed.2d 523 (1987) (quoting Harlow v. Fitzgerald, 457 U.S. 800, 818, 819, 102 S.Ct. 2727, 2738, 2739, 73 L.Ed.2d 396 (1982)) (citations omitted). “Once a defendant raises the defense of qualified immunity as a defense to an action, ‘[t]he plaintiff carries the burden of convincing the court that the law was clearly established.’ ” Powell v. Mikulecky, 891 *1488F.2d 1454, 1457 (10th Cir.1989) (quoting Pueblo Neighborhood Health Centers, Inc. v. Losavio, 847 F.2d 642, 645 (10th Cir.1988)).
“If the law was clearly established, the immunity defense ordinarily should fail, since a reasonably competent public official should know the law governing his conduct. Nevertheless, if the official pleading the defense claims extraordinary circumstances and can prove that he neither knew nor should have known of the relevant legal standard, the defense should be sustained. But again, the defense would turn primarily on objective factors.”
Harlow v. Fitzgerald, 457 U.S. 800, 818-19, 102 S.Ct. 2727, 2738, 73 L.Ed.2d 396 (1982). The defendant bears the burden of proving such circumstances. See Pleasant v. Lovell, 876 F.2d 787, 794 (10th Cir.1989).
1. Whether The Right Was Clearly Established
When the search here at issue took place, the Burger decision was almost a year old. The Dewey decision, upon which Burger relied heavily, was almost seven years old. The Barlow’s decision was almost ten years old. At the same time there was no precedent for the proposition that a generally applicable statute which permitted irregular inspections could constitutionally authorize a warrantless search. We hold that V-l’s right not to be inspected without a search warrant pursuant to a statute such as the Wyoming Environmental Quality Act was clearly established.
2. Whether Extraordinary Circumstances Existed4
As its name suggests, the “extraordinary circumstances” exception to the rule that a qualified immunity defense fails where the defendant violated a clearly established right applies only “rarely.” Skevofilax v. Quigley, 586 F.Supp. 532, 539 n. 6 (D.N.J.1984). The circumstances must be such that the defendant was so “prevented,” Fernandez v. Leonard, 784 F.2d 1209, 1216 (1st Cir.1986); Student Servs. for Lesbians/Gays & Friends v. Texas Tech Univ., 635 F.Supp. 776, 781 (N.D.Tex.1986), from knowing that his actions were unconstitutional that “he should not be imputed with knowledge of an admittedly clearly established right,” Robinson v. Bibb, 840 F.2d 349, 350 (6th Cir.1988).
The circumstance most often considered for treatment as “extraordinary” is reliance upon the advice of counsel. See Carey, Quick Termination of Insubstantial Civil Right Claims: Qualified Immunity and Procedural Fairness, 38 Vand.L. Rev. 1543, 1444-55 (1985). Of course, such reliance is not inherently extraordinary, for few things in government are more common than the receipt of legal advice. Still, “reliance on the advice of counsel in certain circumstances rises to the level of extraordinary circumstances.” Ortega v. City of Kansas City, Kan., 659 F.Supp. 1201, 1211 (D.Kan.1987), rev'd on other grounds, 875 F.2d 1497 (10th Cir.), cert. denied, — U.S. -, 110 S.Ct. 325, 107 L.Ed.2d 315 (1989); cf. England v. Hendricks, 880 F.2d 281, 284 (10th Cir.1989), cert. denied, — U.S. -, 110 S.Ct. 1130, 107 L.Ed.2d 1036 (1990); Lavicky v. Burnett, 758 F.2d 468, 476 (10th Cir.1985), cert. denied, 474 U.S. 1101, 106 S.Ct. 882, 88 L.Ed.2d 917 (1986). But cf. Powell v. Mikulecky, 891 F.2d 1454, 1457-58 (10th Cir.1989); Melton v. City of Oklahoma City, 879 F.2d 706, 731 (10th Cir.), reh’g en banc granted, 888 F.2d 724 (10th Cir.1989).5
*1489Whether reliance upon legal advice “bars our imputation to [the defendant] of constructive knowledge concerning the laws allegedly violated by his conduct,” Polson v. Davis, 635 F.Supp. 1130, 1144 (D.Kan.1986), depends upon the circumstances of each case. Compare Arnsberg v. United States, 757 F.2d 971, 982 (9th Cir.1985), cert. denied, 475 U.S. 1010, 106 S.Ct. 1183, 89 L.Ed.2d 300 (1985); Burk v. Unified School Dist. No. 329, 646 F.Supp. 1557, 1568 (D.Kan.1986); Wells v. Dallas Indep. School Dist., 576 F.Supp. 497, 508 (N.D.Tex.1983); Alexander v. Alexander, 573 F.Supp. 373, 375 n. 4 (M.D.Tenn.1983), aff'd without opinion, 751 F.2d 384 (6th Cir.1984) with Watertown Equip. Co. v. Norwest Bank Watertown, 830 F.2d 1487, 1495-96 (8th Cir.1987); Ortega v. City of Kansas City, Kan., 659 F.Supp. at 1211. Relevant factors include how unequivocal, and specifically tailored to the particular facts giving rise to the controversy,6 the advice was, see Watertown Equip. Co. v. Norwest Bank Watertown, 830 F.2d at 1496; Ortega v. City of Kansas City, Kan., 659 F.Supp. at 1211, whether complete information had been provided to the advising attorney(s), see Burk v. Unified School Dist. No. 329, 646 F.Supp. at 1560-61; cf. Moore v. Marketplace Restaurant, Inc., 754 F.2d 1336, 1348-49 (7th Cir.1985) (separate opinion of Coffey, J.), the prominence and competence of the attorney(s), see Alexander v. Alexander, 573 F.Supp. at 375 & n. 4; cf. Johnston v. Koppes, 850 F.2d 594, 596 (9th Cir.1988), and how soon after the advice was received the disputed action was taken, see Tanner v. Hardy, 764 F.2d 1024, 1027 (4th Cir.1985); Green v. Brantley, 719 F.Supp. 1570, 1584 (N.D.Ga.1989).
We hold that a reasonable officer in Gerber’s position—that is, an officer who conducts a warrantless search on the same day he was advised by fully informed, high-ranking government attorneys that a particular statute, which had not yet been tested in any court, lawfully authorized that particular search—should not be expected to have known that the search was unconstitutional. This was not, as the dissent claims, “mere reliance on attorney’s advice” or “attorney’s advice without more.” Infra at 1490, 1491. Because Gerber was prevented by extraordinary circumstances from knowing the relevant legal standard, he is qualifiedly immune.
II. ATTORNEYS’ FEES
The amount of an award of attorneys’ fees under 42 U.S.C. § 1988 “is particularly within the discretion of the trial court.” Higgins v. Oklahoma ex rel. Oklahoma Employment Sec. Comm’n, 642 F.2d 1199, 1203 (10th Cir.1981). “Accordingly, an attorneys’ fee award ... will be upset on appeal only if it represents an abuse of discretion. Findings on underlying questions of fact are subject to the clearly erroneous standard of review.” Mares v. Credit Bur. of Raton, 801 F.2d 1197, 1201 (10th Cir.1986) (citations omitted).
The district court’s finding that twenty-two hours were spent on the issues for which fees were awarded is not clearly erroneous. Nor was it an abuse of discretion to reach that finding by means of estimation, “so long as there [was] sufficient reason for its use.” Id. at 1203. That the court was not granting fees for the entire litigation, but only for an indis-crete portion thereof, is sufficient reason for estimating hours. Other courts have approved similar methods. See, e.g., Jen*1490kins by Agyei v. Missouri, 838 F.2d 260, 264 (8th Cir.), cert. denied, -U.S. -, 109 S.Ct. 221, 102 L.Ed.2d 212 (1988); Aubin v. Fudala, 821 F.2d 45, 47 (1st Cir.1987); Foster v. Board of School Comm’rs, 810 F.2d 1021, 1023-34 (11th Cir.), cert. denied, 484 U.S. 829, 108 S.Ct. 99, 98 L.Ed.2d 60 (1987); Evers v. County of Custer, 745 F.2d 1196, 1204-05 (9th Cir.1984). Courts of Appeal have even been known on occasion to estimate how much time particular claims consumed. See, e.g., Raton Gas Transmission Co. v. FERC, 891 F.2d 323, 330-31 (D.C.Cir.1989); Ustrak v. Fairman, 851 F.2d 983, 989 (7th Cir.1988).
We have before us a request from the defendants for atorneys’ fees for work done on V-l’s appeal of the fee award. A party who successfully defends a section 1983 action and is awarded attorneys’ fees, then successfully defends an appeal of that fee award, may recover attorney's fees for services rendered on the appeal. See Glass v. Pfeffer, 849 F.2d 1261, 1266 & n. 3 (10th Cir.1988). The standard for awarding fees remains the same as below: whether the appeal is “ ‘frivolous, unreasonable, or without foundation.’ ” Coverdell v. Department of Social & Health Servs., 834 F.2d 758, 770 (9th Cir.1987) (quoting Hughes v. Rowe, 449 U.S. 5, 14-15, 101 S.Ct. 173, 178-79, 66 L.Ed.2d 163 (1980) (per curiam)). Because the appeal in No. 89-8011 meets this standard, we grant the request and “remand to the district court for the sole and limited purpose of determining a reasonable fee for the time spent defending on appeal the attorney fee award.” Glass v. Pfeffer, 849 F.2d at 1268.
No. 88-2691 is AFFIRMED. No. 89-8011 is AFFIRMED, but REMANDED for a determination of an appropriate attorneys’ fee award.
. The other two parts of the Burger test may be discussed summarily.
V-l concedes, Appellant’s Brief at 18, and we agree, that the protection of the environment and the public from pollution in general, and from leakage from underground gasoline storage tanks in particular, is a substantial governmental interest.
We cannot determine from the record whether warrantless inspections are necessary to the regulatory scheme, i.e., whether there will be times that DEQ cannot obtain a warrant promptly enough for the subsequent search to be effective, see McLaughlin v. Kings Island, 849 F.2d 990, 996 (6th Cir.1988); Blackwelder v. Safnauer, 689 F.Supp. 106, 139 (N.D.N.Y.1988). Fortunately, such a determination is not necessary to our disposition of this case.
. Gasoline stations also may be regulated by municipal authorities, Wyo. Stat. § 15-1-103(a)(xxvii) (1988), but the City of Lander has not done so.
. Gerber has not claimed that he was acting pursuant to the federal inspection provision, 42 U.S.C. § 6991d(a). Also, the constitutionality of that provision is not before us.
. The district court did not address this question. We may consider it, however, because “we are ‘free to affirm a district court decision on any grounds for which there is a record sufficient to permit conclusions of law, even grounds not relied upon by the district court.’ ” Griess v. Colorado, 841 F.2d 1042, 1047 (10th Cir.1988) (quoting Alfaro Motors, Inc. v. Ward, 814 F.2d 883, 887 (2d Cir.1987)).
. The dissent errs when it reads Melton as a bar to finding Gerber qualifiedly immune. That decision does not address the extraordinary circumstances exception, so it cannot be considered binding authority on the scope of the exception. Melton instructs us not to refer to legal advice the defendant received when we decide whether or not the governing law was clearly established; it gives no guidance in de*1489ciding when a defendant should not be expected to have known the governing law.
. We reject the position of the dissent that the advice must be couched in certain precise legal terms before an official is entitled to rely upon it. See infra at 1493. None of the cases cited above makes that suggestion. Such a requirement cannot be inferred from the statement in Watertown Equipment that the defendants were not qualifiedly immune because the advice "did not unequivocally assure [them] of the constitutionality of the South Dakota attachment statute,” 830 F.2d at 1495, because the problem there was not specificity (indeed, just like in this case, the attorney discussed the very statute under which the defendants acted), but equivocation: the attorney told the defendants that there was " ‘some risk’ that [the plaintiff] could successfully attack [the statute's] constitutionality.” Id. at 1496.