CONCERN: Water Supply and Wastewater ====================================== 1. PROCESS / COOLING WATER — Wasatch Energy Management reuse water Document: duchesne-nine-mile-data-findings-report-2026-04-02.pdf (Contained project narrative by Jones & DeMille Engineering, Project #2509-064) Agency: Duchesne County Planning Commission (applicant narrative submitted with CUP application) Date: March 11, 2026 (narrative date); findings report dated April 2, 2026 Location: Section 4.1 "Site Utilities," page A-4 (PDF page 10) Relevant text: "Process and cooling water will largely come from Wasatch Energy Management through a process water system shared with the nearby natural gas power generation plant also planned on being build by Energence Utah." Document: duchesne-wells-draw-natural-gas-findings-report-2026-04-02.pdf (Contained project narrative by Jones & DeMille Engineering, Project #2509-064) Agency: Duchesne County Planning Commission (applicant narrative submitted with CUP application) Date: March 10, 2026 (narrative date); findings report dated April 2, 2026 Location: Section 4.2 "Utilities," page A-3 (PDF page 10) Relevant text: "Energence Utah plans to obtain process water for power generation from Wasatch Energy Management. This water is planned to be reuse water." 2. CULINARY WATER — Pleasant Valley area infrastructure Document: duchesne-wells-draw-solar-findings-report-2026-04-02.pdf (Contained project narrative by Jones & DeMille Engineering, Project #2509-064) Agency: Duchesne County Planning Commission (applicant narrative submitted with CUP application) Date: March 10, 2026 (narrative date); findings report dated April 2, 2026 Location: Section 4.2 "Utilities," page A-3 (PDF page 16) Relevant text: "Culinary water utilities for this development is planned to be provided and delivered through existing utilities to the Pleasant Valley area where Energence Utah will extend existing infrastructure to service the development. Culinary water will only be used to service O&M personnel and landscaping, meaning that use will be low." Document: duchesne-wells-draw-natural-gas-findings-report-2026-04-02.pdf (Contained project narrative by Jones & DeMille Engineering, Project #2509-064) Agency: Duchesne County Planning Commission (applicant narrative submitted with CUP application) Date: March 10, 2026 (narrative date); findings report dated April 2, 2026 Location: Section 4.2 "Utilities," page A-3 (PDF page 10) Relevant text: "Culinary water utilities for this development are planned to be provided and delivered through existing utilities to the Pleasant Valley area, where Energence Utah will extend existing infrastructure to service the development. Culinary water will only be used to service O&M personnel and landscaping, meaning that use will be low." Document: duchesne-nine-mile-data-findings-report-2026-04-02.pdf (Contained project narrative by Jones & DeMille Engineering, Project #2509-064) Agency: Duchesne County Planning Commission (applicant narrative submitted with CUP application) Date: March 11, 2026 (narrative date); findings report dated April 2, 2026 Location: Section 4.1 "Site Utilities," page A-3 to A-4 (PDF pages 9-10) Relevant text: "Culinary water use on site will be limited to supporting the needs of O&M personnel (Restrooms, sinks, breakrooms, etc), and watering landscaping." Note: The data center narrative does not name "Pleasant Valley" explicitly; it states culinary water will be provided but does not specify the provider. The solar and natural gas narratives name Pleasant Valley. 3. WASTEWATER — Septic systems coordinated with Tri-County Health Department Document: duchesne-nine-mile-data-findings-report-2026-04-02.pdf Agency: Duchesne County Planning Commission (applicant narrative submitted with CUP application) Date: April 2, 2026 Location: Section 4.1 "Site Utilities," page A-4 (PDF page 10) Relevant text: "Energence Utah plans to utilize septic systems to handle on site wastewater. Energence Utah will work with Tri-County Health Department to ensure that on-site facilities are built in compliance with relevant regulations." Document: duchesne-nine-mile-data-findings-report-2026-04-02.pdf Agency: Duchesne County Planning Commission (staff findings report) Date: April 2, 2026 Location: Recommendation condition #9, page 4 of 5 (PDF page 4) Relevant text: "All permits required with TriCounty Health shall be approved prior to operation." Document: duchesne-wells-draw-natural-gas-findings-report-2026-04-02.pdf Agency: Duchesne County Planning Commission (staff findings and recommendation) Date: April 2, 2026 Location: Recommendation condition #10, page 4 of 4 (PDF page 4) Relevant text: "All permits required with TriCounty Health shall be approved prior to operation." 4. STATE WATER REPORTING REQUIREMENT Document: duchesne-nine-mile-data-findings-report-2026-04-02.pdf Agency: Duchesne County Planning Commission (staff findings report) Date: April 2, 2026 Location: "State Code 73-5-8-3" section, page 4 of 5 (PDF page 4) Relevant text: "State code requires reporting from data centers with an annual water withdrawal of 75-acre feet and with facilities that expand beyond 10,000 square feet. This requirement is for all new data centers that begin operation after July 1, 2026." 5. WASATCH ENERGY MANAGEMENT / reWATER RELATIONSHIP Document: utah-deq-daq-2025-002431-air-permit.pdf Agency: Utah Division of Air Quality (DAQ), Department of Environmental Quality Date: Correspondence dated May 1–7, 2025; registration DAQE-EN162690001-25 Location: Email thread, pages 3-5 (PDF pages 3-5) Relevant text: Lynn Hadlock (Utah Field Superintendent, Wasatch Energy Management): "ReWater and WEM Operating are both owned by Wasatch Energy Management. The two LLC's operate as separate entities... Rewater owns all of our midstream assets, and WEM Operating is everything upstream." Note: This confirms the corporate relationship between reWater LLC and Wasatch Energy Management referenced in the project narratives.