A Facilities Master Plan, completed in 2004 identified the need for improvements to the City of Ann Arbor Wastewater Treatment Plant (WWTP) to upgrade, rehabilitate and/or replace aging facilities to meet future flow, loading and regulatory requirements. The current WWTP has a design capacity of 29.5 million gallons per day (MGD), and consists of an older West Plant (constructed in the 1930’s) and a newer East Plant (constructed in the late 1970’s). The City of Ann Arbor retained the engineering firm Malcolm Pirnie to provide engineering design services for this Facilities Renovations project. 
This project will develop detailed designs for improvements to the existing East Plant as well as demolition and reconstruction of the West Plant. Reconstruction of facility structures, such as the Administration and Maintenance Buildings, necessitated by the demolition of some of the West Plant facilities, will also be included in this project. The design phase of the project began in April, 2005 and is expected to continue through August, 2007.
The tasks of this project include:
-
Field investigations, such as site surveys, subsurface geotechnical and hydrological investigations, and infrastructure surveys will assess current conditions at the WWTP.
-
Preliminary design evaluations to develop a comprehensive plan for the plant improvements.
-
Detailed design of facility improvements, including development of construction sequencing and schedules, permit applications and opinions of probable cost.
For more information on this project, please contact
Mike Amicangelo at MAmicangelo@A2gov.org