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Technical Memo  Page 9 August 16, 2024 <br />Peabody – CDPS Permit Supplement <br />5.References <br />GEI Consultants, Inc. (GEI). 2014. Use-Attainability Analysis for Selected Tributaries to the <br />Yampa River, Routt County, Colorado Segments 13b, 13d, and 13e. Submitted as Exhibit <br />3, 2014 Upper Colorado River Basin, Regulation #33 (5 CCR 1002-33). <br />GEI. 2017. Use Attainability Analysis for Upper Dry Creek and Upper Grassy Creek Upper <br />Colorado River Basin, Segments 13d and 13i. Submitted as Exhibit 3, Proponent <br />Prehearing Statement for the 2017 Temporary Modifications Hearing for the Upper <br />Colorado River Basin, Regulation #33 (5 CCR 1002-33). <br />GEI. 2020. Technical Memorandum: Update on selenium study for Yampa River Basin <br />segments COUCYA13b, -13d, -13e, -13g, -13h, -13i, and -13j. June 18, 2020. <br />GEI. 2021. Technical Memorandum: Update on selenium study for Yampa River Basin <br />segments COUCYA13b, -13d, -13e, -13g, -13h, -13i, and -13j. June 2021. <br />GEI. 2022. Technical Memorandum: 2022 Update on selenium study for Yampa River Basin <br />segments COUCYA13e, -13g, -13i, and -13j. October 2022. <br />GEI. 2023. Technical Memorandum: 2023 Update on selenium study for Yampa River Basin <br />segments COUCYA13e, -13g, -13i, and -13j. August 2023. <br />U.S. Environmental Protection Agency (EPA). 2016. Aquatic Life Ambient Water Quality <br />Criterion for Selenium – Freshwater 2016. EPA 822-R-16-006. Office of Water 4304T, <br />Washington, D.C. <br />EPA. 2021a. DRAFT. Technical Support for Adopting and Implementing EPA’s 2016 <br />Selenium Criterion in Water Quality Standards. EPA-823-D-21-001. Office of Water, <br />Washington, D.C. October 2021. <br />EPA. 2021b. DRAFT. Technical Support for Fish Tissue Monitoring for Implementation of <br />EPA’s 2016 Selenium Criterion. EPA-823-D-21-002. Office of Water, Washington, D.C. <br />October 2021. <br />EPA. 2021c. DRAFT. Frequently Asked Questions (FAQs): Implementing Water Quality <br />Standards Based on EPA’s 2016 Recommended Selenium Criterion in Clean Water Act <br />Section 402 NPDES Programs. EPA-823-D-21-004. Office of Water, Washington, D.C. <br />October 2021. <br />EPA. 2021d. DRAFT. Frequently Asked Questions (FAQs): Implementing the EPA's 2016 <br />Selenium Criterion in Clean Water Act Sections 303(d) and 305(b) Assessment, Listing,