AWWA ACE70586

This powerpoint presentation begins by providing a brief overview of the Regional Municipality of Waterloo, and the Middleton Water Supply System's problem with low-level contamination by Trichloroethylene (TCE). Treatment alternatives are presented, and Advanced Oxidation Process (AOP) using ultraviolet (UV) plus hydrogen peroxide (H₂O₂) was selected as the preferred alternative by the Region. Implementation of Interim Treatment approach is presented, along with design general concept, implementation timeline, fabrication/preparation, G3 preparation, site modifications, permitting, installation, and start-up. Presentation summary includes: unique delivery with Region acting as contractor for site and supplier acting as contractor for a "turn-key" process; five months from date of PO issuance to having finished containers on site for final hook-up; water running on June 8, 2009; less intensive permitting required due to temporary nature of works; coordination of supplier, fabricator, and site trades was critical; required balance of long-term vs temporary decision-making for several items - well pumping, VFD, well control, PLC and SCADA, drain lines and service water, reusability of equipment for long term use; and, success was achieved by effective communication between all stakeholders. Includes figures.