CATEGORICAL EXCLUSION DETERMINATION - For the TOWN OF BYRON, WYOMING - SEWER, WATER AND WASTEWATER IMPROVEMENTS PROJECT

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Wyoming Department of Environmental Quality

CATEGORICAL EXCLUSION DETERMINATION

For the TOWN OF BYRON, WYOMING 

SEWER, WATER AND WASTEWATER IMPROVEMENTS PROJECT

Big Horn County, Wyoming

The Department of Environmental Quality/Water Quality Division (DEQ) has conducted a review of the proposed SEWER, WATER AND WASTEWATER IMPROVEMENTS 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 project includes replacement of sewer and water lines crossing Highway 14A to be completed prior to WYDOT’s upcoming improvement project, replacement of the sewer main line along Mountain View Avenue to the Wastewater Treatment Plant (WWTP), and various upgrades a the WWTP.  Estimated costs for the sewer and wastewater treatment project are $2,782,000, which will be funded by a $1,391,000 Mineral Royalty Grant from Wyoming State Lands and Investments Board and a $1,391,000 Clean Water State Revolving Fund (CWSRF) Loan.  Estimated costs for the water lines is $415,000 which will be paid by the Town of Byron.  Other funding for sidewalks and street light improvements will be paid for by WYDOT and the Town of Byron.  

The CWSRF loan will include 50% principal forgiveness, and the remaining balance of $695,500 will be refinanced by USDA-RD at 2.5% over 20 years.  An existing USDA-RD loan up to $200,000 will be included in the refinance.  The loan cost will be repaid by sewer user fees, which will be increased upon completion of the project.  

The Town of Byron 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.  The Town of Byron is aware of and accepts the fact that they will be responsible for any mitigative actions associated with and including all necessary permitting, stormwater runoff, erosion control, archeological/historic artifacts, air quality, solid and hazardous waste, compliance with NWP 12, and floodplain permitting.  These items will be part of the standard State Revolving Loan Funds Program contract conditions.

DEQ is granting an exclusion because the project replaces or rehabilitates existing infrastructure. This project will be completely constructed in previously disturbed ground, specifically ground disturbed by previously installed water and sewer lines and an existing wastewater treatment facility.  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 Town of Byron in Big Horn County, Wyoming.

The documentation to support this decision will be on file in the DEQ Cheyenne Office and is available for public scrutiny upon request.  Comments concerning this decision may be addressed to Stan Miller, SRF Project Engineer, Department of Environmental Quality, 200 W. 17th St. Suite 200, Cheyenne, WY 82002, Tel. (307) 777-6371, FAX (307) 777-1784, email: stanley.miller@wyo.gov.

Publish Date:  February 1, 2018