STATEHB2976 OFFA1 OKLAHOMAGiseEm-MAH(Untimely 2ndFiled) Session3/11/2026 of8:59:18 thepm 60thFLOOR LegislatureAMENDMENT (2026)HOUSE POLICYOF COMMITTEEREPRESENTATIVES RECOMMENDATIONState FORof HOUSEOklahoma BILLSPEAKER: NO.

2976CHAIR: By:

GiseI 6move 8to POLICYamend COMMITTEEHB2976 RECOMMENDATIONOf Anthe Actprinted relatingBill toPage Section Lines Of the DepartmentEngrossed ofBill EnvironmentalOn Quality;page 2, line 3-6, by deleting paragraph 2 in its entirety and renumbering subsequent paragraphs;

requiringOn page 2, lines 10-12, by deleting all language beginning with the promulgationcapitalized ofword rules"The" establishingon waterline quality10, criteriathrough forthe aluminum;period "." on line 12;

listingOn criteriapage for3, promulgatedlines rules;9-12, by deleting all language beginning with the capitalized word "The" on line 9 through the period "." on line 12;

authorizingOn adoptionpage or3, incorporationline 12 1/2, by referenceinserting ofa certainnew criteria;Section 2 to read as follows:

requiring"SECTION criteria2. be applied to certain permitting;

listingNEW requirementsLAW forA applicationnew section of law to permits;be codified in the Oklahoma Statutes as Section 2-6-112.1 of Title 27A, unless there is created a duplication in numbering, reads as follows:

requiringThe criteriaprovisions of this act shall only be includedapplicable inwith certainrespect triennialto review;existing public ports." AMEND TITLE TO CONFORM TO AMENDMENTS Amendment submitted by:

authorizingEmily updatesGise toAdopted: criteria;

providing_____________________________ for______________________________________ codification;Reading Clerk

and providing an effective date.

BE IT ENACTED BY THE PEOPLE OF THE STATE OF OKLAHOMA:

SECTION 1.

NEW LAW A new section of law to be codified in the Oklahoma Statutes as Section 2-6-112 of Title 27A, unless there is created a duplication in numbering, reads as follows:

A.

By December 31, 2028, the Department of Environmental Quality shall promulgate rules that establish numeric water quality Req.

No.

16355 Page 1 criteria for aluminum applicable to surface waters of the State of Oklahoma.

The criteria shall:

1.

Be developed in accordance with Section 303(c) of the federal Clean Water Act and its implementing regulations;

2.

Be consistent with current U.S.

Environmental Protection Agency (EPA) guidance, including use of any recommended hardness- based or water-chemistry-based criteria equations, bioavailability models, or site-specific adjustment procedures;

and 3.

Incorporate site-specific conditions, where scientifically appropriate, including water hardness, pH, dissolved organic carbon, or other parameters affecting aluminum toxicity.

The Department may adopt or incorporate by reference any EPA criteria, guidance documents, or calculation tools necessary to implement the provisions of this section.

B.

Following promulgation of the rules required in subsection A, the Department shall apply the numeric aluminum water quality criteria in all Oklahoma Pollutant Discharge Elimination System (OPDES) permits where aluminum may be discharged.

The Department shall, consistent with federal and state law:

1.

Require permittees to conduct monitoring and reporting of aluminum and related parameters necessary to evaluate compliance with water-quality-based standards;

2.

Establish water-quality-based effluent limits where needed to ensure compliance with the numeric criteria;

Req.

No.

16355 Page 2 3.

Consider site-specific conditions, mixing zones, dilution allowances, and receiving-water characteristics in calculating any water-quality-based effluent limits;

and 4.