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CATEGORICAL EXCLUSION DETERMINATION
For the City of Gillette WWTP Phase II Project, Campbell County, Wyoming
The Department of Environmental Quality/Water Quality Division (DEQ) has conducted a review of the proposed WWTP Phase II 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 City of Gillette WWTP Phase II Project includes replacement of several equipment units within the existing plant that are beyond their useful life, and require replacement, as well as improvements to provide backup redundancy in case processes within the plant go offline. The total estimated cost of the Phase II Improvements is $20M. The SRF loan application will be requesting funding in the amount of $15M, with the remaining $5M to be funded by the City of Gillette. Loan repayment will be made based on the sewer utility rates.
The City of Gillette 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. No significant impacts are expected, as the projects are primarily replacement projects, and in areas within the existing plant that have previously been disturbed.
DEQ is granting an exclusion because this project replaces existing equipment and provides backup equipment within the existing plant, in areas of the property that have previously been disturbed. This project will be completely constructed in previously disturbed ground, specifically ground disturbed by construction of the existing treatment plant 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 the City of Gillette, Campbell 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 Shawn King, SRF Project Manager, Department of Environmental Quality, 200 W. 17th St. Suite 200, Cheyenne, WY 82002, Tel. (307) 777-6941, FAX (307) 635-1784, email: [email protected].
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