Upstream Disputes Series #1: When ONRR Gets the Audit Wrong: Why GAGAS Compliance Matters in Federal Royalty Disputes

Upstream Disputes Series Blog Post #1

Federal oil and gas royalty disputes rarely begin in a courtroom. They begin in accounting entries, transportation allowance calculations, and internal spreadsheets that, at first glance, appear technical and routine. Yet those spreadsheets often form the foundation for some of the most consequential financial disputes in the upstream oil and gas industry.

Why This Matters for Royalty Dispute Resolution

Disputes involving federal oil and gas royalties frequently require expert analysis of accounting methodology, transportation allowances, and regulatory compliance. In many cases, the critical questions are not geological but financial, how royalties were calculated, how post-production costs were allocated, and whether federal audit procedures were properly followed. These issues commonly arise in arbitration, litigation, and administrative appeals, where expert testimony is often necessary to explain valuation methodology and regulatory frameworks governing federal mineral leases.

When the Office of Natural Resources Revenue (ONRR) questions a royalty calculation, the issue can escalate quickly. A refund request becomes an audit. An audit becomes a restructured accounting order. A restructured accounting order can expose an operator to millions of dollars in alleged underpayments, recalculated allowances, and revised methodologies applied retroactively across multiple production years.

A recent decision by the Interior Board of Land Appeals (IBLA) in EPL Oil & Gas, LLC, 200 IBLA 66 (2025), underscores an important but often overlooked principle: in federal royalty disputes, procedural discipline is as important as substantive methodology. When ONRR fails to comply with Generally Accepted Government Auditing Standards (GAGAS), its enforcement authority may be compromised regardless of the underlying accounting debate.

Federal Royalty Disputes Often Begin in Accounting Entries

Federal oil and gas royalty disputes rarely begin in a courtroom. They begin in accounting entries, transportation allowance calculations, and internal spreadsheets that appear routine but ultimately drive high-stakes financial outcomes.

Transportation allowances, affiliate transactions, and post-production cost allocations are highly technical matters. They require detailed financial modeling and familiarity with federal royalty regulations. When disagreements arise, they are often discovered years later through federal audit activity conducted by ONRR. These disputes frequently involve large financial exposure, not because of a single accounting entry but because methodologies are applied across multiple wells, leases, and production periods.

Increasingly, these disputes require professionals capable of explaining complex royalty

accounting to courts, arbitrators, and regulatory tribunals. In many instances, parties retain an oil and gas royalty expert witness to evaluate valuation methodology, audit procedures, and regulatory compliance under federal leasing regimes.

The Background: Transportation Allowances and Refund Requests

In EPL Oil & Gas, the operator produced oil from federal leases on the Outer Continental Shelf. Over several years, EPL submitted multiple refund requests totaling more than $19 million, asserting that it had previously understated transportation allowances associated with non-arm’s- length transportation charges.

ONRR approved several of those refund requests but later raised concerns regarding the

methodology used in calculating the allowances. ONRR initiated an audit and ultimately

concluded that EPL’s approach was incorrect. On July 17, 2020, ONRR issued an Order requiring EPL to perform restructured accounting using a revised valuation methodology.

EPL appealed the Order to the IBLA

The dispute before the IBLA was not limited to whether EPL’s transportation allowance

methodology was correct. Instead, the central issue became whether ONRR had complied with mandatory audit procedures before issuing its enforcement Order.

GAGAS Audit Requirements and Federal Royalty Enforcement

Under prior IBLA precedent, the Office of Natural Resources Revenue must conduct a GAGAS-compliant audit before issuing an order requiring restructured accounting.

GAGAS establishes baseline procedural safeguards intended to ensure transparency, fairness, and accountability in government audits.

Among other requirements, GAGAS mandates that auditors:

1. Obtain and report the views of responsible officials of the audited entity regarding audit findings and conclusions; and

2. Include those comments in the audit report along with the auditor’s evaluation of any

disagreements.

In EPL’s case, ONRR did not provide a draft audit report to EPL or solicit the company’s

comments until more than six months after issuing the restructured accounting Order.

The IBLA concluded that this sequence violated GAGAS requirements. ONRR was required to comply with those procedural safeguards before issuing its enforcement Order. Because ONRR failed to do so, the IBLA vacated the Order. Importantly, the decision did not determine whether EPL’s valuation methodology was correct.

Instead, the ruling focused on whether the agency had followed mandatory audit procedures before exercising its enforcement authority.

The Federal Oil and Gas Royalty Management Act and Refund Authority

The Federal Oil and Gas Royalty Management Act (FOGRMA) governs the federal

government’s collection and auditing of oil and gas royalties. Under FOGRMA, ONRR must act on refund requests within specified time periods. However, the statute also preserves the agency’s authority to audit previously submitted royalty calculations.

EPL argued that FOGRMA’s 120-day timeline for acting on refund requests prevented ONRR from later challenging previously approved refunds through restructured accounting. The IBLA rejected that argument. The Board held that FOGRMA expressly permits the agency to audit refunds after approval. In other words, approval of a refund request does not permanently insulate that methodology from later scrutiny.

The decision also reinforced the rigidity of statutory limitation periods.

The IBLA held that tolling agreements cannot retroactively extend FOGRMA’s seven-year statute of limitations unless executed within the statutory window itself.

Private agreements cannot revive expired agency authority. In federal royalty disputes, statutory time limits operate as firm legal constraints rather than flexible negotiation tools.

Why Procedural Compliance Matters in Federal Royalty Audits

The EPL decision highlights a recurring theme in upstream disputes: enforcement authority depends not only on accounting analysis but also on compliance with mandatory audit procedures.

GAGAS requirements exist to ensure transparency and fairness in government audits. When those procedural safeguards are bypassed, the resulting enforcement action may be vulnerable to challenge. For operators and royalty payors, this distinction can be critical. Even when regulators dispute valuation methodology, failure to comply with required audit protocols may invalidate the resulting enforcement order.

Strategic Implications for Operators and Royalty Payors

For upstream operators, the EPL decision offers several practical lessons.

Audit engagement strategy must begin early. Once ONRR initiates an audit, the administrative record is being constructed in real time. Operators should monitor not only the substantive questions raised by auditors but also whether required audit procedures are being followed.

The administrative record is the battlefield. Federal royalty disputes are reviewed under

deferential standards of administrative law. Courts and the IBLA review the agency’s record rather than retry valuation issues from scratch. Methodology and procedure are inseparable. Even a strong valuation methodology may be overshadowed by procedural vulnerabilities, and procedural defects may undermine otherwise well-supported agency conclusions.

Expert involvement should not be delayed. Valuation experts are frequently retained only after a restructured accounting order has issued. Earlier expert engagement during the audit phase can assist in clarifying methodologies, identifying weaknesses in agency analysis, and shaping the administrative record.

Professionals with experience in royalty valuation disputes, federal royalty audits, and post- production cost allocation can often assist counsel and operators in evaluating both methodology and regulatory compliance during these early stages of dispute development.

Part of a Larger Pattern in Upstream Disputes

The EPL decision reflects a broader pattern across the upstream sector. Increasingly, disputes turn on accounting architecture rather than geology. Transportation allowances, affiliate transactions, post-production deductions, and valuation

methodologies are highly technical. Agencies rely heavily on audit authority and retrospective review.

This article is part of the Upstream Disputes Series, which examines several structural sources of upstream controversy, including:

• transportation allowance methodology and the 50 percent cap

• state setbacks and regulatory takings claims

• venue and procedural leverage in upstream litigation

Each of these issues reflects the same underlying reality: upstream disputes frequently arise long before litigation begins, and their resolution often turns on financial methodology, regulatory interpretation, and administrative procedure.

Conclusion

The IBLA’s decision in EPL Oil & Gas is a reminder that federal royalty disputes are not merely debates over accounting formulas. They are exercises in administrative law, statutory interpretation, and procedural discipline.

ONRR possesses significant enforcement authority. But that authority is not unlimited. GAGAS compliance is not optional. It is a condition precedent to certain forms of enforcement action. For operators, the lesson is straightforward. In royalty disputes, process is leverage. Understanding how valuation methodology intersects with audit procedure, statutory limitations, and administrative review standards can materially affect both exposure and resolution strategy.

Upstream disputes are rarely simple. They operate at the intersection of finance, regulation, and property law. The EPL decision confirms that even in highly technical accounting controversies, adherence to foundational procedural standards can determine the outcome.

This article is Part 1 of Ralph Cantafio’s Upstream Disputes Series Explore the full series below.

• Read Part 2: Upstream Disputes Series – Blog Post #2

About the Author

Ralph A. Cantafio is an attorney, professor and expert witness focusing on upstream oil and gas disputes. He provides expert testimony in state and federal proceedings involving royalty valuation, post-production cost allocation, lease interpretation, and regulatory compliance. With more than four decades of experience in natural resources law, he assists courts, arbitrators, and counsel in analyzing complex accounting, valuation, and regulatory issues arising in upstream oil and gas development.