Mills Engineering, LLC

Certificate of Completion and Discharge Authorization

Once the plant is constructed, operation and installation are reviewed by Mills Engineering. Once all punch list items are addressed, the Engineer’s Certificate of Completion is submitted to the regulatory agency along with test results.

Mills Engineering fills your needs for design of water and wastewater systems in Arizona.

Aquifer Protection Permit

An Individual Aquifer Protection Permit Application is also submitted to ADEQ, who reviews it for Administrative Completeness, Technical Completeness, issues a Draft Permit, gives Public Notice, and issues a final permit.

Mills Engineering fills your needs for design of water and wastewater systems in Arizona.

Plant Design

Once the plant has been approved by the government association, detailed Design of plant and sewer system will continue. Construction plans and specifications and a draft operation and maintenance manual are prepared for review by the delegated County or Arizona Department of Environmental Quality (ADEQ)

Mills Engineering fills your needs for design of water and wastewater systems in Arizona.

Wastewater Treatment Plant or Treatment Plant

Expansion 208 Plan Small Plant Review or Amendment
The permitting process that is required to expand a wastewater treatment facility or construct a new one includes the 208 Amendment or Small Plant Review. The concept for the plant must follow the 208 Plan, a regional wastewater plan to protect the environment, following Section 208 of the Clean Water Act.

Mills Engineering fills your needs for design of water and wastewater systems in Arizona.