Oklahoma Audits regulations & environmental compliance analysis

Oklahoma Audits: What you need to know

Governing Law and Regulations

Self-reporting of noncompliance: Oklahoma Administrative Code (OAC) 252:4-9-5

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Partial immunity: OAC 252:4-9-5(b)

Regulatory Agency

Oklahoma Department of Environmental Quality (DEQ)

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Oklahoma will not seek administrative or civil penalties when a regulated entity promptly and fully discloses an apparent failure to comply with applicable state environmental rules and meets several other requirements.

Administration and enforcement. DEQ conducts enforcement activities for violations of state environmental laws and rules in Oklahoma.

State Requirements


Oklahoma provides full or partial immunity from civil or administrative penalties for certain environmental violations that are discovered and disclosed to DEQ by the facility owner or operator where the violation occurred. Many companies in states that provide similar incentives for disclosure discover existing or potential violations through facility or companywide environmental audits. In many cases, potential violations are quickly discovered and corrected before they are reported. The U.S. Environmental Protection Agency (EPA) provides guidance for conducting environmental audits and developing audit reports. See the national section AUDITS for EPA and other guidance materials.


OAC 252:4-9-5(a)

Oklahoma will not seek administrative or civil penalties in evaluating an enforcement action against a facility owner or operator who violates environmental rules, except when the violation is habitual or repeated, if the following conditions are met:

  • The owner or operator voluntarily, promptly, and fully discloses an existing or potential violation to the appropriate DEQ division in writing before the division learns of it or is likely to learn of it imminently.

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