Finding of No Significant Impact - Thayne Water Storage Project

Wyoming Department of Environmental Quality  | view as a webpage

Wyoming Department of Environmental Quality



TO ALL INTERESTED GOVERNMENTAL AGENCIES AND PUBLIC GROUPS: As required by guidelines for the Wyoming State Environmental Review Process, the Wyoming Department of Environmental Quality (DEQ) has performed an environmental review on the proposed State Revolving Fund (SRF) supported action below:

Project:  Thayne Water Storage Project

Location:  Thayne, Lincoln County, Wyoming 

Total Cost/SRF share: $1,077,600/$488,000

The Town of Thayne's existing water tank is in need of repair and recoating, and additional storage is needed to continue to meet the Town's water demand.  The proposed project consists of the construction of a new 300,000-gallon concrete culinary water storage tank at a location approximately 0.5 miles east of the existing tank and repair of the existing 340,000-gallon steel water storage tank.  It is estimated that the new tank will cost $880,000 to construct while the repair of the existing tank is estimated at $197,000. The repairs to the existing tank will consist of recoating the inside and outside of the tank.

The project will be financed through a Wyoming Water Development Grant, in the amount of $589,000 and a Wyoming State Revolving Fund Loan in the amount of $488,000. The loan will have a term of 30 years with an interest rate of 2.5% and 75% principal forgiveness.  The loan will be repaid from user fees, which may require a rate increase estimated at $1.79 per month per customer.

No significant adverse environmental impacts will occur due to this project. The proposed project will not adversely affect wetlands, prime agricultural lands, threatened or endangered species habitat, historical sites, or sites with environmentally sensitive characteristics.  The primary impacts of the project will be short-term and construction related. 

The review process did not indicate significant environmental impacts would result from the proposed action.  Consequently, DEQ has made a preliminary decision not to prepare an Environmental Impact Statement (EIS).  DEQ has taken this action on the basis of a review of the environmental assessment document and other supporting data, which are on file at the DEQ Casper Field Office.  The public may review these documents upon request.

Comments supporting or disagreeing with this decision may be submitted for DEQ consideration. Address all questions and comments to Brian Mark, SRF Principal Engineer, WDEQ/WQD, 200 W. 17th St., Cheyenne WY 82002, Tel 307-777-6371, Fax 307-777-5973, email:  After evaluating comments received, DEQ will make a final decision; however, DEQ will take no administrative action for at least 30 days after publication of this Finding of No Significant Impact.

Publish Date:  3-22-17