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Pacific Southwest, Region 9

Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations

Douglas Wastewater Treatment Plant Upgrade and Bay Acres Colonia Wastewater Collection System Expansion - Public Notice for the Draft Finding of No Significant Impact, Douglas, AZ

The Bay Acres Colonia is currently serviced by inadequate, failing onsite wastewater treatment systems (septic tanks with leach fields). These onsite treatment systems are problematic in Bay Acres because the residential lots are small and the systems are either failing or near the end of their useful life. As a result, the small lots do not provide an adequate area for a new replacement leach field. The failing on-site wastewater systems are a public health concern due to various pathogenic microorganisms, ammonia and nitrate that may produce a health risk to humans and degrade the environment. The expansion of the wastewater collection system to the Bay Acres Colonia and adjacent areas, and expansion and upgrade of the Douglas Wastewater Treatment Plant are intended to provide improved health, sanitation, and security to the residents of the Bay Acres Colonia and the City of Douglas.

This project will increase the capacity of the wastewater treatment plant from 2.0 MGD under Aquifer Protection Permit (#APP-100831) to 3.1 MGD in order to accept and treat flows from the expanded wastewater collection system and modest growth in the City of Douglas. The project will provide capacity to meet needs of the Bay Acres Colonia and adjacent areas that may connect to the system, as well as allow for limited and controlled build out of the City and its associated colonias. Additionally, the project will help meet minimum Class B+ effluent standards to enable the reuse of the effluent on open access landscape areas in the project, and to meet the requirements for the Douglas Aquifer Protection Permit.

Copies of the EA and draft FONSI are also available for public review at the following location:

EPA Region 9 Headquarters
75 Hawthorne Street
San Francisco, CA

Interested persons, including those who disagree with this proposal may submit comments to EPA Region 9 within 30 calendar days from the date the EA is issued. No administrative action will be taken on this proposed project prior to the expiration of the comment period which ends at 5pm Pacific Time on February 27, 2014. Comments, via letter, fax or email, should be sent to Elizabeth Borowiec at the address listed below.

To obtain additional information about the project, please contact:

Elizabeth Borowiec (Borowiec.Elizabeth@epa.gov)
Environmental Protection Specialist
EPA Region 9 Headquarters
75 Hawthorne Street, WTR-4
San Francisco, CA 94015-3901
(415) 972-3419
Fax: (415) 947-3537

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