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Annual Conference Webinar Series #6: Corrosion
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Annual Conference Webinar Series #6: Corrosion

Bringing the Annual Conference to you Virtually!

 Export to Your Calendar 8/19/2020
When: Wednesday August 19th
12:00 noon - 1:00 pm
Where: Webinar! Bringing the Annual Conference to you Virtually!
Contact: Stacy Cacallori

Online registration is available until: 8/19/2020
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Join us for a lunch time webinar on August 19, 2020 from 12:00 - 1:00 pm!   

This webinar is the 6th in the Conference Webinar Series ... Bringing the Annual Conference to you Virtually!

Registration will be open until 10 AM on August 19, 2020!

Topic: Corrosion


"Crisis to Success: Lessons for Utilities from the Tucson Water Turnaround"
Michael J. McGuire, MJM, Inc; Marie S. Pearthree, Central Arizona Project (retired)

A debacle of corrosive water destroying pipes preceded the events in Flint, Michigan by over two decades. In November 1992, the water department for Tucson, Arizona, (Tucson Water or TW) began delivery of a new water supply: treated surface water from the Central Arizona Project (CAP) primarily Colorado River water. Putting treated CAP water into the TW distribution system caused a devastating corrosion problem that resulted in colored water (e.g., red, orange, yellow and brown) flowing from customer taps. The purpose of this presentation is to summarize the results of an exhaustive investigation into the debacle and to chronicle how TW changed its management practices, dramatically improved its abysmal credibility, ended over pumping of its groundwater and created a sustainable water supply for the TW service area. The mistakes that Tucson Water and other utilities have made when changing water supplies and water quality, and the successful steps that Tucson Water took to regain credibility and public trust, provide lessons for all water utilities when contemplating similar actions. The "lessons learned" presented from this investigative study cover many aspects of utility management including technical research, organizational culture and structure, open and effective management, financial prioritization, and public outreach and engagement.

"Newark #nofilter: Point-of-Use Filter Study"
Matthew Young, CDM Smith; Tosin Adetutu, City of Newark

 After the City of Newark exceeded the Lead Action Level (LAL) set by the Lead and Copper Rule (LCR) in 2017, a corrosion control study was performed to determine why the system was not meeting regulations and the best course of action to fix the issue. Based on sequential sampling and lead scale analysis performed on lead service lines in Newark's Pequannock system, it was determined that Newark had tetravalent lead scales that were in the process of breaking down. To protect residents from the high lead levels caused by the unstable scales, Newark initiated a program to distribute 40,000 NSF-certified point-of-use (POU) filters and replacement cartridges as a temporary measure to protect residents while the permanent solutions, a new zinc orthophosphate chemical feed system and a lead service line replacement program, were implemented. The topics discussed will include sampling protocol and coordination across multiple agencies and stakeholders. Public outreach methodology and scheduling logistics will also be included. The tools and process used to quickly deploy a mobile sampling application will be shown. The variety of criteria (filter usage, installation, and maintenance) that disqualified data will be discussed. Most importantly, the final results of the study will be analyzed.

Professional Development Credits:

This webinar is approved for the following Professional Development Credits (1 TCH for Water Operators, 1 CPC for NJ PE, 1 PDH for NY PE).

Credits will be awarded after successful completion of the Webinar, Quiz, obtaining an acceptable interest level as calculated by GoToWebinar, and completion and submitted Participant's Statement of Attendance and Participation.  

Member Cost $15;  Non-Member Cost $25


Michael J. McGuire has a B.S. in civil engineering from the University of Pennsylvania (1969), and M.S. and Ph.D. (1977) degrees in environmental engineering from Drexel University. McGuire has worked for drinking water utilities and consulting firms advising water utilities his entire career. He has worked for the Philadelphia Water Department the Metropolitan Water District of Southern California and national consulting engineering firms. He founded and managed McGuire Environmental Consultants, Inc. from 1992 to 2005. He has been active in the American Water Works Association (AWWA) over the past 48 years. He received the George Warren Fuller Award in 1994. In 2009, AWWA presented him with the A.P. Black Research Award, and he was elected to the National Academy of Engineering. In 2016, he was presented the Abel Wolman Award by AWWA.

Marie S. Pearthree has over 38 years of experience in the water industry. A registered Professional Engineer (Civil) in Arizona, she has held a wide variety of positions in consulting engineering, hydrology and water utility management including Program Manager, Water Treatment Administrator and Deputy Director at Tucson Water (1996-2008), and Deputy General Manager at the Central Arizona Project (2009-2016). She received the City of Tucson Public Service Excellence Award in 2003 and the George Warren Fuller Award in 2018. She holds a B.A. in Geology from Oberlin College and an M.S. degree in Geosciences from the University of Arizona.

Matthew Young is a civil and environmental engineer with 15 years experience in the water/wastewaster industry. He received is B.S. in Civil/Environmental Engineering from the University of Maryland. Mr. Young specializes pipeline/conveyance and disaster recovery projects.

Thank you to our Conference Sponsors for their ongoing dedicated support!




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