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Categorical Exclusion Determination, Town of Pavillion, WY, Pavillion No. 9 Project

The Department of Environmental Quality/Water Quality Division (DEQ) has conducted a review of the proposed Pavillion Well No. 9 project in accordance with EPA and State of Wyoming procedures for implementing the State Environmental Review Process. DEQ has determined that this project is eligible for a categorical exclusion. Accordingly, DEQ is exempting the project from further substantive environmental review requirements under the State Environmental Review Process. Neither an Environmental Assessment/Finding of No Significant Impact nor an Environmental Impact Statement/Record of Decision will be required for the proposed action. The following is a brief description of the situation and the proposed action, and a brief statement of how the action meets the criteria for a categorical exclusion.

The Pavillion No. 9 Well project will include the installation of the submersible pump and motor in the recently drilled No. 9 well. This will also include the installation of the No. 9 well pump house and the connection of this well to the existing Pavillion water supply system. Well No. 9 will produce higher quality water for the town of Pavillion and provide an additional water source should the other supply wells fail. Based on current cost estimates, the Town of Pavillion plans to borrow $118,630.00 from the Wyoming Drinking Water State Revolving Loan Fund administered by the Wyoming Office of State Lands and Investments. Current user fees will repay the loan, but the town does not anticipate the need to increase the user fees. The loan terms will be 1.5% interest rate and 30 years.

The Town of Pavillion is aware of and accepts the fact that they will be responsible for any required mitigative actions associated with and including storm water runoff, erosion control, archeological/historic artifacts, and air quality concerns. These will be part of the standard State Revolving Funds Program contract conditions. During construction, there will be slight disturbance to the area in the form of noise and earthwork. There will be short-term increases in noise, air-particulate levels, and traffic in the immediate vicinity of the construction activities. Dust control measures will be required if the dust becomes a nuisance, and disturbed vegetation will be re-established in accordance with the local land-use type and as requested by the Landowner.

DEQ is granting an exclusion because the Well No. 9 project will be addressing system deficiencies, such as aging wells and water quality. This project will be completely constructed in previously disturbed ground, specifically ground disturbed the operations of the Midvale Irrigation District (storage yard), the drilling and completion of Pavillion’s No. 8 well and the installation of two municipal water lines that carry water from the wells up to the storage tanks and from the storage tanks out into the Pavillion distribution system. DEQ has determined that exempting the proposed project from further review under the State Environmental Review Process will not result in adverse impacts to the population or the area of Pavillion, Fremont County, Wyoming.

The documentation to support this decision will be on file in the DEQ Cheyenne Office and is available for public review upon request. Requests for information about the proposed decision may be directed to Timothy Eisenhauer, SRF Principal Engineer by email (*[email protected]*) or phone (307) 777-6371). Written comments shall be addressed to Timothy Eisenhauer, Department of Environmental Quality, 200 W. 17th St., Suite 200, Cheyenne, WY 82002 or via FAX (307) 635- 1785, and be postmarked on or before 5:00 p.m. on August 11, 2025, to be considered. Electronic comments may only be submitted through and accepted by the Wyoming DEQ comment portal provided at *[link removed]*. Phone or email comments will not be accepted.

*Para español, visite deq.wyoming.gov. [ [link removed] ]* Americans with Disabilities Act: special assistance or alternative formats will be made available upon request for individuals with disabilities. Please provide at least fourteen (14) days before the close of the public comment period for such requests.


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This email was sent to [email protected] using GovDelivery Communications Cloud on behalf of: Wyoming Department of Environmental Quality · 200 West 17th St.· Cheyenne, WY 82002 GovDelivery logo [ [link removed] ]
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