Sitka Wastewater Treatment Plant Effluent Disinfection System Determination of Categorical Exclusion

Wastewater Treatment Plant (WWTP) Effluent Disinfection System (SRF Loan # 783551-S) City and Borough of Sitka Sitka, Alaska The Alaska Department of Environmental Conservation’s (Department) State Revolving Fund Program has conducted a review of the above referenced project in accordance with the Operating Agreement between the Department and the U.S. Environmental Protection Agency (EPA) for implementing the Clean Water State Revolving Fund (CWSRF) loan program. The Department has determined that this project is eligible for a Categorical Exclusion (CE) in accordance with 18 AAC 76.040. Accordingly, the Department is exempting the project from further environmental review requirements under the Department’s EPA-approved State Environmental Review Process. The project will design an effluent disinfection system proposed to be located at the existing wastewater treatment plant. A CWSRF loan in the amount of $1,000,000 has been requested for this project. The project is eligible for a CE because undertaking this action: • Will not significantly affect the degree of treatment or capacity of the existing facility; • Will not directly or indirectly affect cultural resources, habitats of endangered or threatened species, or environmentally important natural resources area; • Will not have a significant effect on the quality of the human environment; • Will not cause significant public controversy. The determination shall become effective upon distribution by the Department and can be revoked at any time that adverse information is made available. The documentation to support this decision will be on file with the State Revolving Fund Program. To request a copy of the CE, contact: Adele Fetter, Environmental Impact Analyst Alaska Department of Environmental Conservation - State Revolving Fund Program 555 Cordova Street Anchorage, AK 99501 Phone: (907) 269-7428 Email: adele.fetter@alaska.gov The State of Alaska, Department of Environmental Conservation complies with Title II of the Americans with Disabilities Act of 1990. If you are a person with a disability who may need a special accommodation in order to participate in this public process, please contact ADA Coordinator Kristin Mabry, via e-mail at Kristin.mabry@alaska.gov or by phone, (907) 334-0884 or Alaska Relay Service/TTY/TDD 1-800-770-8973/TTY or dial 711 to ensure that any necessary accommodations can be provided. Issued on the 14th day of October 2026 in Anchorage, Alaska.