OPINION BY
Judge LEAVITT.
Transportation Services, Inc. petitions for review of the adjudication of the Board of the Pennsylvania Underground Storage Tank Indemnification Fund denying its claim for reimbursement of expenses incurred in cleaning up contamination caused by a leak from one of its underground storage tanks. The Board denied the claim for the stated reason that Transportation Services was not current on its storage tank capacity fees when the contamination was discovered. Transportation Services argues that because it pumped out and closed its tanks in the fall of 1997, it was not required to pay any fees to the Fund after January 1, 1998. Further, the parties agree that Transportation Services had timely paid all capacity fees assessed by the Fund through the middle of 1998, well past the date the tanks were emptied. Accordingly, Transportation Services argues that it was current on its fees when, in 2005, the contamination was discovered. We agree and reverse and remand.
The background to this appeal was established by stipulation of the parties. Transportation Services is a corporation that did a commercial trucking business in several states from a facility located at 3025 West 17th Street in Erie, Pennsylva[145]*145nia.1 The West 17th Street property was owned by Joseph Benacci and his wife, Berit Benacci, when, in 1977, they installed four large underground storage tanks on the property. Two of the storage tanks, each with a capacity of 10,000 gallons, were used to store diesel fuel. The third tank had a capacity of 10,000 gallons and stored gasoline. The fourth tank had a capacity of 8,000 gallons and stored new motor oil. Reproduced Record at 25a (R.R. —).
From 1982 to 1992, the Benaccis rented the West 17th Street property to Ryder Truck Rental, which used the four storage tanks in its business. In 1987, a leak of diesel fuel was discovered, and Ryder did the remediation. In May of 1995, the Pennsylvania Department of Environmental Protection (Department) issued a “no further action” letter, confirming that the remediation had been successfully completed. R.R. 2a. After Ryder closed its business in 1992, Transportation Services began using the West 17th Street property for its own trucking operations, which shut down in 1997.
On July 25, 1997, the Benaccis conveyed the West 17th Street property to Transportation Investment Group, a partnership of the Benaccis’ five children (Partnership). Joseph Benacci and his son, Raymond, serve as general managers for the Partnership. The Partnership decided to develop the West 17th Street property by constructing a new building for Federal Express. This construction necessitated pumping out the four storage tanks and removing the fuel island and pumping equipment. These steps rendered the four underground storage tanks empty and inoperable by the fall of 1997.
Because of their proximity to the FedEx building, the storage tanks could not be removed but had to be closed permanently in situ. The Partnership contracted with United Environmental to do a permanent closure by filling them with concrete, but the closure was delayed by construction at the site and by United Environmental’s other commitments in 1998. Federal regulation required all underground storage tank owners to upgrade their tanks, remove them or permanently close them no later than December 22, 1998. 40 C.F.R. § 280.21.2 On December 22, 1998, United Environmental completed the permanent closure of the storage tanks on the West 17th Street property, and on December 23, 1998, the Partnership notified the Department that the tanks had been permanently closed in accordance with 40 C.F.R. § 280.21.
When the tanks were emptied in the fall of 1997, approximately one inch of a fuel and water residue remained in each tank. United Environmental removed this residue as part of the December 1998 permanent closure. The total residue from all four tanks, which had a total storage capacity of 38,000 gallons, was able to be contained in a single 55-gallon drum.
In January of 2002, the Department directed the Partnership to install three monitoring wells and to do groundwater sampling at the West 17th Street property. [146]*146A sample done in March of 2002 satisfied the applicable environmental standards, but a sample done in June of 2002 did not; it showed a measurable amount of “phase liquid.” Benacci believed that this phase liquid related to the 1987 release and, thus, its remediation was the responsibility of Ryder. However, Benacci did not succeed in convincing the Department to pursue Ryder, and the responsibility fell on Transportation Services.
The Fund’s billing records listed Joseph Benacci as the owner of the tanks and Transportation Services as the facility using the tanks. The Fund began charging Transportation Services fees on the West 17th Street storage tanks in 1994 and continued to do so through 1999. The Storage Tank and Spill Prevention Act (Storage Tank Act)3 imposes different types of fees on underground storage tanks, such as “tank fees,” “gallon fees” and “capacity fees.” A “capacity fee” is one calculated on the size, or capacity, of a tank whereas a “gallon fee” is one calculated on the number of gallons that pass through a tank. The only fee at issue in this appeal is the capacity fee owing by Transportation Services under the Storage Tank Act.
Transportation Services paid all invoiced fees through the first half of 1998. However, when Benacci received the second 1998 invoice for capacity fees, he returned it with a note stating that the tanks were not in service and no fee was owed. He wrote “please advise” on the invoice but received no response. He spoke with a Fund representative on August 18, 1998, and January 26, 1999, but the issue of the capacity fee remained unresolved. The Fund did withdraw its demand for payment of the 1999 fees, but it sent a letter to Benacci stating that the 1998 fee was owed and notifying him of his right of appeal; Benacci denies ever receiving the letter.
The Fund then referred Transportation Services’ unpaid 1998 capacity fee to the Office of Attorney General for collection. The Attorney General notified Transportation Services on November 16, 2005, and on December 1, 2005, that legal action would be taken if the outstanding capacity fee were not paid. On December 6, 2005, the Partnership paid the disputed fee of $1,000 for the second half of 1998.
On August 29, 2002, Transportation Services filed a claim for its remediation costs with the Fund. On November 30, 2005, ICF Consulting, the Fund’s third-party administrator, denied Transportation Services’ claim for the stated reason that it had not been current on its fees when the contamination was discovered. Transportation Services sought a review of the claims manager’s decision from the Insurance Department’s Bureau of Special Funds. On February 7, 2006, the Bureau notified Benacci that because “capacity fees for the last half of 1998 were never paid by your company,” it was upholding the decision of the claims manager “under [authority of] 25 Pa.Code § 977.31(2).” R.R. 102a, 103a. The Bureau advised Be-nacci of his right to further review from the Administrative Hearings Division of the Insurance Department, which Transportation Services pursued. The parties agreed to a stipulation of facts, and then briefed the legal question of whether Transportation Services owed a capacity fee to the Fund after 1997.
On May 31, 2011, four years after the last brief was filed, the presiding officer issued a proposed report and a recommendation that the claim be denied. The Storage Tank Act requires all storage tank fees to be paid before a need for remedia[147]*147tion is discovered, and the presiding officer held that Transportation Services had not satisfied this requirement when, in July of 2002, contamination was discovered. The presiding officer rejected Transportation Services’ argument that no fee was owing for the second half of 1998 after the tanks had been emptied and rendered inoperable in 1997. In reaching this conclusion, the hearing officer cited the Fund’s regulation at 25 Pa.Code § 977.12(d),4 which requires the payment of capacity fees by owners or operators of tanks that store “regulated substances.” The tanks contained a small amount of residual fuel and water mixture in 1997, which the presiding officer found to be a “regulated substance” under Section 108 of the Storage Tank Act.5 She also agreed with the Fund that capacity fees must be paid until a permanent closure report is filed with the Department of Environmental Protection, and this event did not occur until December of 1998. The presiding officer recommended denying Transportation Services’ claim for remediation costs.
Transportation Services filed exceptions to the hearing officer’s proposed report, and the Board rejected them. It rejected Transportation Services’ challenge to the Fund’s rule that a fee must be paid until a closure report is filed with the Department, even if the tank is empty. The Board explained that until a tank is permanently closed it may be susceptible to leaks, and it agreed with the presiding officer that the residual fuel and water mixture found in the tanks constituted a “regulated substance” that subjected Transportation Services to the $1,000 capacity fee for the second half of 1998. Because this 1998 fee had not been paid prior to the 2002 discovery of a release, Transportation Services was held ineligible for its claim for reimbursement from the Fund. Transportation Services then petitioned for this Court’s review.6
Transportation Services presents three issues for our review. First, it argues that the Board erred in relying upon Section 977.12(d) of Title 25 of the Pennsylvania [148]*148Code because this regulation was promulgated in 2002 and had no application to the calculation of capacity fees owed by Transportation Services in the second half of 1998. Second, it argues that the regulation that was in effect in 1998, i e., 25 Pa.Code § 971.2(3), did not impose a capacity fee on empty tanks containing a small amount of residue but only on tanks storing home heating oil product and diesel fuel product. The “residual mixture” in the tanks at issue here was neither type of product. Further, it is clear that the Fund’s regulation, read as a whole, imposes a capacity fee only on tanks actually in use and not those that are empty. Third, the Board’s “permanent closure” rule is void as a de facto regulation adopted in violation of the act commonly known as the Commonwealth Documents Law7 and, thus, invalid.
We begin with a review of the relevant provisions of the Storage Tank Act. Section 706 establishes the eligibility requirements for a claimant seeking to recover its remediation costs from the Fund. A claimant must meet the following requirements:
(1)The claimant is the owner, operator or certified tank installer of the tank which is the subject of the claim;
(2) The current fee required under section 705 has been paid;
(3) The tank has been registered in accordance with the requirements of section 503;
(4) The owner, operator or certified tank installer has obtained the appropriate permit or certification under sections 108, 501 and 504;
(5) The claimant demonstrates to the satisfaction of the Board that the release that is the subject of the claim occurred after the date established by the Board for payment of the fee required by section 705(d);
(6) Additional eligibility requirements which the Board may adopt by regulation.
35 P.S. § 6021.706 (emphasis added). Section 705(b) obligates the Board to establish the procedures by which “owners, operators and certified tank installers may make claims” for costs incurred in responding to a “sudden or nonsudden release from underground storage tanks.” 35 P.S. § 6021.705(b).8 Section 705(d) obligates the Board to establish the amount of fee necessary to “pay outstanding and anticipated claims against ... the Fund” by the “owner, operator or certified tank installer ... of underground storage tanks.” 35 P.S. § 6021.705(d)(1).9 Significantly, the [149]*149Storage Tank Act directs the Board to establish the Fund’s fees “by regulation.” Id.
In its first issue, Transportation Services argues that it had paid the “current fee required under section 705” when it submitted its remediation claim. 35 P.S. § 6021.706(2). In holding otherwise, the Board relied, erroneously, upon Section 977.12(d) of Title 25 of the Pennsylvania Code, which was adopted four years after the Fund assessed Transportation Services for the 1998 fee. The Fund responds that Transportation Services waived this issue because it did not point out to the Board that the presiding officer had applied the wrong regulation.
From the beginning, the Fund’s claims manager and the Bureau of Special Funds directed Transportation Services to the regulation at 25 Pa.Code § 977.12(d). This regulation states as follows:
(d) Capacity fee. An owner or operator which stores regulated substances including diesel, heating oil, used motor oil, kerosene and unknown substances based on the tank registration information maintained by the DEP may be assessed a capacity fee of $.0825 per gallon of capacity, which amount is established in accordance with section 705(d)(2) of the act (35 P.S. § 6021.705(d)(2)). (For example, 10,000 gallons at $.0825 per gallon equals $825).
25 Pa.Code § 977.12(d) (emphasis added). This regulation was adopted in 2002 and replaced an earlier regulation on capacity fees promulgated in 1993, which stated as follows:
(3) [Underground storage tanks] which store regulated substances limited to heating oil products and diesel fuel products. A per gallon of capacity fee on regulated [underground storage tanks] storing heating oil or diesel fuel products set at 150 per gallon of capacity, which amount is calculated in accordance with section 705(d)(2) of the act.[10]
[150]*15025 Pa.Code § 971.2(3) (emphasis added). It is beyond peradventure that the version of the fee regulation relied upon by the Board in its analysis, i.e., 25 Pa.Code § 977.12(d), was not in effect in 1998.
The difference between the 1993 and 2002 versions of the “capacity fee” regulation is significant. The 2002 version is broader in scope than the 1993 version because it covers the storage of “regulated substances,” including unknown substances. By contrast, the 1993 regulation imposes a capacity fee on tanks that “store regulated substances limited to heating oil products and diesel fuel products.” 25 Pa.Code § 971.2(3) (emphasis added). Stated otherwise, it did not impose a capacity fee on every regulated substance, but only on heating oil and diesel fuel products. The fuel and water residue that remained in Transportation Services’ tanks throughout most of 1998 was not a heating oil product or a diesel fuel product. The residue was not even a “product” with commercial value but, rather, a type of residual waste.
The Fund responds that Transportation Services has waived this issue because it did not point out at the administrative hearing that 25 Pa.Code § 977.12(d) was not in effect in 1998. The Fund argues that the Pennsylvania Rules of Appellate Procedure and the Administrative Agency Law do not allow this Court to review an issue not preserved for appeal. Transportation Services responds that the Fund gives too narrow a read of “issue” and erroneously conflates it with “legal argument.” It contends that both parties labored under a mutual mistake about the applicability of 25 Pa.Code § 977.12(d). It was the Board’s obligation to invoke and apply the correct regulation when it turned down Transportation Services’ claim, and it erred. The Board cannot reap the benefit of its own error by invoking the doctrine of waiver.
The Board stated in its adjudication that the controlling issue was “whether all fees were current at the time the release giving rise to the claim was discovered.” Board Adjudication at 4. The parties stipulated that the issue in this case is whether the “current fee required under Section 705 of the [Act], 35 P.S. § 6021.705, had not been paid, which arises under eligibility requirement 25 Pa. Code § 977.31(2).”11 R.R. 11a. In reaching the conclusion that Transportation Services was in arrears on its “current fee,” the Board applied a regulation not in existence when the Fund invoiced Transportation Services in 1998. An administrative agency’s application of a law not in effect at the time of a claim is reversible error. See Whitehead v. Casey Building Wreckers, Inc., 6 Pa.Cmwlth. 256, 294 A.2d 215 (1972) (holding that agency erred in applying 1939 version of the Workmen’s Compensation Act instead of the language of the 1956 version).
We reject the Fund’s contention that this Court cannot address the Board’s error in applying the wrong regulation in its adjudication. The Pennsylvania Rules of Appellate Procedure direct that “[n]o question shall be heard or considered by the court which was not raised before the government unit.” Pa. R.A.P. 1551(a) (emphasis added).12 Similarly, Section 703 of [151]*151the Administrative Agency Law states that a “party may not raise upon appeal any other question not raised before the agency ... [except on] due cause shown.” 2 Pa.C.S. § 703(a).13 The “question” before this Court is whether Transportation Services owed a capacity fee for the second half of 1998 after its tanks were emptied of heating oil product and diesel fuel product. A “question” is not synonymous with a legal argument. If this were true, then appellate courts would not have the ability to affirm a lower court’s order on other grounds. See, e.g., Wilson v. Plumstead Township Zoning Hearing Board, 594 Pa. 416, 936 A.2d 1061 (2007) (affirming on different grounds Commonwealth Court’s denial of variance; Supreme Court held landowner failed to demonstrate unnecessary hardship and rejected this Court’s finding of self-inflicted hardship). Indeed, until the Board presented its legal analysis in its adjudication, Transportation Services could not know what error it might contain. In any case, the mutual mistake of the parties constitutes “due cause shown” under the Administrative Agency Law for reviewing the Board’s citation of the wrong regulation. 2 Pa.C.S. § 703(a).
The waiver cases cited by the Board are distinguishable. In Dilliplaine v. Lehigh Valley Trust Company, 457 Pa. 255, 322 A.2d 114 (1974), it was held that by not lodging a timely objection to the trial court’s instruction, the appellant did not preserve the issue for appeal. In Wing v. Unemployment Compensation Board of Review, 496 Pa. 113, 436 A.2d 179 (1981), it was held that the employer waived the issue of a claimant’s willful misconduct by pursuing only the theory that claimant had resigned. Neither case deals with a situation where the legal “question” remained constant, and neither case deals with a mutual mistake.14 More [152]*152importantly, neither ease deals with a situation where the state agency has itself been the source of the mistake. A state agency should, and usually can, be relied upon to know its own regulation and when it became effective.
The Board might have confessed error to the Court rather than try to benefit from its error. The Fund wrongly advised Transportation Services that the operative regulation for determining a fee in 1998 was that quoted by the Insurance Department’s Bureau of Special Funds in its denial letter. The 1993 regulation in effect when the 1998 capacity fee was assessed upon Transportation Services was 25 Pa. Code § 971.2(3), and it is the one that must be considered in deciding whether the “current fee required under section 705 has been paid.” 35 P.S. § 6021.706(2). Even were it so inclined, the Court cannot make the 2002 regulation applicable in 1998 by the doctrine of waiver or any doctrine.15 The law is the law.
In its second issue, Transportation Services argues that neither the 1993 nor the 1998 regulation imposed a capacity fee on the owners or operators of empty, inoperable storage tanks. Each version of the fee regulation imposed a fee only on tanks actually in use. Transportation Services’ tanks were emptied, disabled and permanently removed from service in December of 1997, as acknowledged by the Fund in the stipulation. The Board’s finding that the residue in the tanks was a regulated substance was irrelevant because the appropriate regulation at 25 Pa.Code § 971.2(3) did not impose a capacity fee on tanks containing a small amount of residue. Accordingly, Transportation Services was current on its fee and is eligible to claim remediation costs.
The Board responds that after tanks are removed from service, they present a threat to the environment even if they contain no more than one inch of oil and water residue. Thus, fees must be paid until the owner of the tank files a permanent closure report with the Department. For its part, Transportation Services argues that the stipulation of fact did not provide that one inch of residue poses any threat to the environment.
Section 451(c) of Title 25 of the Pennsylvania Code differentiates between tanks being used for storage and tanks that are “empty.”16 Section 451(a) stated that a storage tank is
empty when all materials have been removed using commonly employed practices so that no more than 2.5 centime[153]*153ters (1 inch) of residue ... remain in the system.
25 Pa.Code § 245.451(a) (amended and re-promulgated at 25 Pa.Code § 245.451(c)) (emphasis added). Likewise, the applicable federal regulation defines “empty” in the same manner.
The [underground storage tank] system is empty when all materials have been removed using commonly employed practices so that no more than 2.5 centimeters (one inch) of residue ... remain in the system.
40 C.F.R. § 280.70(a). Finally, both state and federal regulations provide that release detection is not required for empty tanks. See 25 Pa.Code § 245.451(a) (“Release detection is not required as long as the underground storage tank system is empty.”); 40 C.F.R. § 280.70(a) (“[Release detection is not required so long as the [underground storage tank] system is empty.”).
The regulation distinguishes “empty” tanks from those “storing” a regulated substance that, by applicable law, are considered to pose a risk of release. It follows that capacity fees are not due on tanks that are empty and closed. The regulation provides that a tank is empty even if it contains one inch of “residue.” 25 Pa.Code § 245.451(a). Neither the 1993 nor the 2002 version of the fee regulation expressed an intent to impose a capacity fee on tanks that meet the legal definition of “empty.” We hold, therefore, that the Fund lacked authority to charge Transportation Services a capacity fee after 1997 once it was established, factually, that its tanks were empty as that term is defined in 25 Pa.Code § 245.451(a).
In its third issue, Transportation Services argues that the Fund’s “permanent closure” rule is not authorized by the Storage Tank Act and constitutes a de facto regulation adopted in violation of the Commonwealth Documents Law.17 Neither the 1993 nor the 2002 version of the Fund’s fee regulation makes any reference to the filing of a closure report with the Department of Environmental Protection; each regulation was binding on the Fund at all relevant times. Transportation Services also challenges the Fund’s proffered rationale for the permanent closure rule, i.e., that it would be “logistieally difficult, resource intensive, and highly impractical” for the Fund to investigate a claimant’s tanks as part of determining eligibility. Board’s Adjudication at 7.
The Board responds that the permanent closure rule is a valid interpretative rule that closely tracks the language and intent of the fee regulation and the Storage Tank Act. It is reasonable to tie fees to closure reports filed with the Department, and this rationale also applies to every version of the fee regulation. Further, the Fund argues that interpretative rules do not need to be promulgated in accordance with the Commonwealth Documents Law so long as they track the meaning of the underlying statute.
A regulation has the force and effect of law. City of Pittsburgh, Department of Personnel and Civil Service Commission v. Pennsylvania Human Relations Commission, 157 Pa.Cmwlth. 564, 630 A.2d 919, 921 n. 4 (1993). The same is not true of a statement of policy, which expresses, at most, an agency’s interpretation of law, as that law is expressed in a statute or a regulation. It is the agency’s burden to demonstrate that its interpreta[154]*154tion of the statute or regulation is correct, whether or not a statement of policy has been published. Borough of Bedford v. Department of Environmental Protection, 972 A.2d 53, 61 (Pa.Cmwlth.2009). A statement of policy need not be promulgated in accordance with the Commonwealth Documents Law. Eastwood Nursing and Rehabilitation Center v. Department of Public Welfare, 910 A.2d 134, 141-42 (Pa. Cmwlth.2006).18
The effect of an agency’s failure to promulgate a regulation in accordance with the Commonwealth Documents Law is to have the regulation declared a nullity. Germantown Cab Company v. Philadelphia Parking Authority, 993 A.2d 933, 937 (Pa.Cmwlth.2010), affirmed, 614 Pa. 133, 36 A.3d 105 (2012). If an interpretative rule or statement of policy functions as a regulation, then it will be nullified due to the agency’s failure to obey the processes applicable to the promulgation of a regulation. Department of Environmental Resources v. Rushton Mining Company, 139 Pa.Cmwlth. 648, 591 A.2d 1168, 1171 (1991).19
Our Supreme Court has explained that a regulation has the effect of a “binding norm” and a statement of policy does not. In Pennsylvania Human Relations Commission v. Norristown Area School District, the Court explained:
A general statement of policy is the outcome of neither a rulemaking nor an adjudication; it is neither a rule nor a precedent but is merely an announcement to the public of the policy which the agency hopes to implement in future rulemakings or adjudications. A general statement of policy, like a press release, presages an upcoming rulemaking or announces the course which the agency intends to follow in future adjudications.
The critical distinction between a substantive rule and a general statement of policy is the different practical effect that these two types of pronouncements have in subsequent administrative proceedings. ... A properly adopted substantive rule establishes a standard of conduct which has the force of law .... [155]*155A general statement of policy, on the other hand, does not establish a ‘binding norm’.... A policy statement announces the agency’s tentative intentions for the future. When the agency applies the policy in a particular situation, it must be prepared to support the policy just as if the policy statement had never been issued.
473 Pa. 334, 349-50, 374 A.2d 671, 679 (1977) (quoting Pacific Gas & Electric Co. v. Federal Power Commission, 506 F.2d 33, 38 (D.C.Cir.1974)) (emphasis added). In applying these principles, this Court has explained that a
“[blinding norm” means that the agency is bound by the statement until the agency repeals it, and if the statement is binding on the agency, it is a regulation.
Home Builders Association of Chester and Delaware Counties v. Department of Environmental Protection, 828 A.2d 446, 451 (Pa.Cmwlth.2003) (quoting Rushton Mining Company, 591 A.2d at 1173). A statement of policy, which announces a “tentative” intention for the future, “tracks a statute and does not expand upon its plain meaning.” Groce v. Department of Environmental Protection, 921 A.2d 567, 578 (Pa.Cmwlth.2007). A pronouncement that leaves the agency with discretion to deviate from its terms can be held to be a statement of policy, not a regulation. Home Builders Association of Chester, 828 A.2d at 451.
In sum, a regulation is binding on an agency, and a statement of policy is not. A statement of policy expresses what the agency hopes to implement in future rule-makings or “adjudications,” but has no immediate effect. Norristown, 473 Pa. at 349-50, 374 A.2d at 679. By contrast, a regulation “establishes a standard of conduct which has the force of law.” Id. at 350, 374 A.2d at 679.
The question here is whether the Fund’s permanent closure rule for assessing fees functioned as a regulation that had to be promulgated in accordance with the Commonwealth Documents Law or as a guideline. The Board argues that the permanent closure rule is merely an interpretative rule and, as such, exempt from the Commonwealth Documents Law. We disagree.
First, the Fund’s permanent closure rule establishes a standard of conduct which the Fund applies in all situations now and in the future, which is the hallmark of a regulation. Rushton, 591 A.2d at 1173. Indeed, the Fund argues that the permanent closure rule is essential to its fee assessment program because without it, tank owners will lie and say their tanks are empty when they are not.20 In other words, it is a norm binding on the Fund and on tank owners and operators.
Second, neither the Storage Tank Act nor the regulation say anything whatsoever about “permanent closure.” It cannot be argued, then, that the permanent closure rule “tracks” the applicable statute and regulation.
Third, Section 705(d)(1) of the Act specifies the procedure by which the Fund will establish its fees, i.e., by regulation. It states, in relevant part, as follows:
The board, by regulation, shall establish fees to be paid by the owner, operator or [156]*156certified tank installer, as appropriate, of underground storage tanks....
35 P.S. § 6021.705(d)(1) (emphasis added). This is a clear directive, and it is not limited to the amount of the fee; it applies with equal force to the occasion and duration of the fee obligation. The Fund wants to collect fees from tanks that contain any regulated substance, including residue, until a permanent closure report is filed with the Department of Environmental Protection. This requires a regulation. As a creature of statute, the Fund can exercise only those powers which have been conferred by the legislature in clear and unmistakable language. Aetna Casualty & Surety Insurance Company v. Insurance Department, 536 Pa. 105, 118, 638 A.2d 194, 200 (1994). The Fund has not been authorized to establish fees by interpretative rules or policy statements but only by regulation. 35 P.S. § 6021.705(d)(1).
The permanent closure rule operates as a binding norm, or standard of conduct, not an announcement of what the Fund intends for the future. Norristown, 473 Pa. at 350, 374 A.2d at 679. As such, the permanent closure rule must be promulgated as a regulation in accordance with the Commonwealth Documents Law. Because it was not, the rule is void and unenforceable. Further, the Fund lacks authority to establish the fees to be paid by the owners and operators of underground storage tanks in any way other than by regulation. 35 P.S. § 6021.705(d)tf).
For the above-stated reasons, we reverse the Board and remand for the return of the capacity fee paid by the Partnership and for computation of the amount of coverage for Transportation Services’ claim for remediation costs.
ORDER
AND NOW, this 24th day of April, 2013, the order of the Underground Storage Tank Indemnification Board dated December 16, 2011, in the above-captioned matter is hereby REVERSED and this matter is REMANDED in accordance with the attached opinion.
Jurisdiction relinquished.