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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 252. Department of Environmental Quality |
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Chapter 517. Disposal of Coal Combustion Residuals from Electric Utilities |
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Subchapter 11. Design Criteria |
SECTION 252:517-11-3. Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment
Latest version.
- (a) Applicability. New CCR surface impoundments and lateral expansions of existing and new CCR surface impoundments must be designed, constructed, operated, and maintained with either a composite liner or an alternative composite liner that meets the requirements of OAC 252:517-11-1(b) or (c).(b) Liner coverage. Any liner specified in this Section must be installed to cover all surrounding earth likely to be in contact with CCR. Dikes shall not be constructed on top of the composite liner.(c) Pre-construction requirements. Prior to construction of the CCR surface impoundment or any lateral expansion of a CCR surface impoundment, the owner or operator must:(1) Obtain a certification from a qualified professional engineer that the design of the composite liner (or, if applicable, alternative composite liner) system meets the requirements of this Section, and submit the certification along with design plans to DEQ for approval.(2) Submit a QA/QC plan to DEQ for review and approval to demonstrate the liner system will be installed in accordance with this Subchapter and the approved design plans. The plan shall include all information required for the applicable liner design, placement, construction, and testing, and describe how independent, third-party, QA and QC will be conducted during all phases of construction of the liner.(3) Obtain written approval from DEQ to construct.(4) Provide written notification of construction. The DEQ shall be notified at least two weeks before liner construction begins. The notification shall:(A) define the area to be constructed; and(B) include the names of the contractors and third party QA and QC officials.(5) A pre-construction meeting shall be held at the facility with the design engineer and QA and QC officials before liner construction begins. The DEQ shall be notified at least 48 hours in advance of the meeting.(d) LIT report. Upon completion, the owner or operator must obtain certification from a qualified professional engineer that the composite liner or if applicable, the alternative composite liner has been constructed in accordance with the requirements of this Section. The certification shall be submitted to the DEQ for review and approval as part of a Liner Installation and Testing (LIT) report. The LIT report shall include:(1) summaries of all construction activities;(2) testing data sheets and summaries;(3) changes from design and material specifications; and(4) all QA/QC documentation.(e) DEQ inspection required. Waste shall not be placed in a new surface impoundment until the DEQ inspects the liner system and provides written authorization to commence disposal.(f) Recordkeeping. The owner or operator of the CCR unit must comply with the recordkeeping requirements specified in OAC 252:517-19-1(f), the notification requirements specified in OAC 252:517-19-2(f), and the Internet requirements specified in OAC 252:517-19-3(f).