BEFORE THE ENERGY AND CARBON MANAGEMENT COMMISSION OF THE STATE OF COLORADO IN THE MATTER OF AN APPLICATION FOR RENEWING THE PERMIT TO ALLOW CONTINUED DISCHARGE OF TREATED PRODUCTION WATER FROM THE WELLINGTON MUDDY UNIT INTO THE BOXELDER CREEK ALLUVIUM, LARIMER COLORADO CAUSE NO. 1 DOCKET NO. 260400126 TYPE: GENERAL ADMINISTRATIVE NOTICE OF HEARING Wellington Operating Company (Operator No. 95233) ("Wellington" or "Applicant") filed an Application with the Commission for an order to renew its permit to allow the Welling Production Water Treatment Facility's continuned treatment of production water and discharge of treated production water from the Wellington Muddy Unit into the Boxelder Creek Alluvium in Larimer County relating to the Facility and Basins below (the "Application Lands"). This Notice was sent to you because the Applicant believes you may be entitled to notice pursuant to Commission Rule 504. APPLICATION LANDS Facility: Township 9 North, Range 68 West, 6th P.M. Section 7: SW¼SE¼ Rapid Infiltration Basins: Township 9 North, Range 68 West, 6th P.M. Section 8: SW¼SW¼ Township 9 North, Range 68 West, 6th P.M. Section 17: NW¼NW¼ DATE, TIME, AND LOCATION OF HEARING (Subject to change) A Commission hearing on the above-referenced docket number is currently scheduled for the following date, time, and location: Date: August 26, 2026 Time: 9:00 a.m. Location: Virtual Hearing with Remote Access via Zoom To participate virtually navigate to https://ecmc.state.co.us/#/home and locate the Zoom meeting link on the left side of the webpage. Energy and Carbon Management Commission The Chancery Building 1120 Lincoln Street, Suite 801 Denver, CO 80203 Parties to this hearing will be notified if this date, time, or place changes. For the most up-to-date information regarding the Commission's hearing schedule, please visit https://ecmc.state.co.us/#/home , click on "Commission Hearings," and click on "Preliminary Agendas." PUBLIC COMMENT Any party may file a public comment for the review of Commission Staff related to the above-described OGDP. All public comments will be included in the administrative record for the OGDP proceeding. Parties wishing to file a public comment on the above-described OGDP may find the "eFiling Public Comment Portal" under "Hearings" on the ECMC homepage or use the eFiling system outlined below. PETITIONS DEADLINE FOR PETITIONS BY AFFECTED PERSONS: July 27, 2026 Any interested party who wishes to participate formally in this matter must file a written petition with the Commission no later than the deadline provided above. Please see Commission Rule 507 at https://ecmc.state.co.us/#/home , under "Regulation," then select "Rules." Please note that, under Commission Rule 510.l, the deadline for petitions may only be continued for good cause, even if the hearing is continued beyond the date that is stated above. Pursuant to Commission Rule 507, if you do not file a proper petition, the Hearing Officer will not know that you wish to formally participate in this matter and the date and time of the hearing may change without additional notice to you. Parties wishing to file a petition must register online at https://oitco.hylandcloud.com/DNRCOGExternalAccess/Account/Login.aspx and select "Request Access to Site." Please refer to our "eFiling Users Guidebook" at https://ecmc.state.co.us/documents/reg/Hearings/External_EfilingSystemGuidebook_2023_FINAL.pdf for more information. Any Affected Person who files a petition must be able to participate in a virtual prehearing conference during the week of July 27, 2026 , if a virtual prehearing conference is requested by the Applicant or by any person who has filed a petition. ADDITIONAL INFORMATION For more information, you may review the Application, which was sent to you with this Notice. You may also contact the Applicant at the phone number or email address listed below. In accordance with the Americans with Disabilities Act, if any party requires special accommodations as a result of a disability for this hearing, please contact Margaret Humecki at Dnr_ECMC_Hearings_Unit@state.co.us , prior to the hearing and arrangements will be made. ENERGY AND CARBON MANAGEMENT COMMISSION OF THE STATE OF COLORADO By: Elias J. Thomas, Commission Secretary Dated: June 24, 2026 Applicant Wellington Operating Company ATTN: Randy Evans 1590 East County Road 70 Wellington, CO 80549 Rgrevans477@gmail.com Attorneys for Applicant Kearney, McWilliams & Davis, PLLC Scott C. Kearney 1625 Broadway #2950 Denver, CO 80202 skearney@kmdlaw.com July 8 2026 LCOL0545528