News & Events

Latest News - August, 2015

Maxym Lachance is presenting at the 2015 ISA Water/Wastewater and Automatic Controls Symposium in Orlando, Florida. He and Sreekanth Lalgudi, P.Eng., the Process Control Manager at EPCOR Utilities, will talk about the project to Develop Optimum Control Strategies for Controlling Wastewater Plant Inflows at the Gold Bar Wastewater Treatment Plant, which is operated by EPCOR and located in Edmonton, Alberta.

For more information, click here.



May, 2015

Diana Qing Tao co-presented with John Loechle, Infrastructure Manager for Louisville Metropolitan Sewer District, at the Wet Weather Partnership Conference on “Lessons Learned from Long Term Real Time Control Operations – Highlighting Louisville MSD RTC System”.

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Latest News

Diana Qing Tao will present Connecting Wastewater Treatment Plants to the Collection System: A Learning Experience Drawn from Quebec City’s Story of Addressing CSOs at WEFTEC 2013 in Chicago, IL. This conference will take place October 5-9, 2013, and Diana will present her paper as part of Session 417: Wet Weather Operation and Control of Integrated Sewer and Wastewater Treatment Plant Systems.


September 2013

Tetra Tech CSO has been awarded a project for the City of Thetford Mines.

A previous study performed by Tetra Tech CSO responded to the City’s urgent need to demonstrate to the “Ministère du développement durable, de l’Environnement, de la Faune et des Parcs” or MDDEFP (the province of Quebec’s environment authority) their desire and interest in controlling sewer overflows at their 30-plus overflow points. The study, delivered in 2011, identified solutions that would allow the City to reduce the number of sewer overflows to 7 between May and December, while respecting the limited capacities of the interceptors already in place. For this new project, the City has asked Tetra Tech CSO to analyse in greater detail the solutions proposed in the 2011 study for four retention sites, addressing eight overflow structures.


August 2013

Maxym Lachance will be presenting his paper entitled Simulate Your Way out of a Difficult Real Time Control Problem: Automatically Controlling Gates to Reduce Combined Sewer Overflows at the International Society of Automation’s Water/Wastewater and Automatic Controls Symposium, taking place in Orlando, Florida, on August 6-8, 2013. Click here for more information.


July 2013

The City of Winnipeg, Manitoba has awarded Tetra Tech CSO with Phase 4 of the Winnipeg Overflow Monitoring Project, which will begin in September. To comply with the recommendations of the Manitoba Clean Environment Commission regarding the instrumentation of CSO outfalls, the City of Winnipeg has implemented a citywide comprehensive centralized CSO outfall monitoring program. This program consists of a permanent monitoring system and a data analysis and reporting tool, enabling real-time reporting of overflow events. Phase 4 of the program will complete the permanent instrumentation of the remaining primary CSO sites.


June 2013

Tetra Tech CSO will present two papers at the WEF Collection Systems Conference, June 8-12, 2013. The first paper is Wilmington’s LTCP Story: Proven Track Record of Addressing CSOs, which discusses the City of Wilmington’s development of a series of increasingly improved long term control plans. Their approach to addressing combined sewer overflow control and total maximum daily requirements is to keep their focus on key project implementations and performance monitoring, which has led to considerable progress in reducing pollution. To read more about this presentation, click here.

The second paper is entitled Simulate Your Way out of a Difficult Real Time Control Problem: Automatically Controlling Gates to Reduce Combined Sewer Overflows.To resolve operational issues, such as process instability and excessive gate movements seen at the City of Edmonton real time control site RTC#4, an external MATLAB® simulator was developed to allow for off-site testing and development of a stable control solution that would account for all of the equipment specifications and on-site configurations. For more information about this paper, click here.


May 2013

Diana Qing Tao has been officially appointed to the Canadian Water and Wastewater Association ’s Board of Directors, effective immediately and expiring at the Annual General Meeting in 2016.


May 2013

Tetra Tech CSO is proud to publish the paper Potential and Limitations of Modern Equipment for Real Time Control of Urban Wastewater Systems in the Urban Water Journal. After identifying and briefly discussing the basic components of real time control systems for urban drainage systems, this paper describes the specific components in detail. To read more about this article, click here.


April 2013

Diana Qing Tao has been nominated by "Réseau Environnement" to be appointed to the Board of Directors of the Canadian Water and Wastewater Association as the "Réseau Environnement" representative for a 3-year term.


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Key Contact

Diana Tao

Director of Business Development
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