Case Studies

DC Water Clean Rivers- Combined Sewer Overflow (CSO) Study, Washington DC

District of Columbia Water and Sewer Authority (DCWASA)

CSL was hired by DC Water to perform post-construction monitoring as a part of their Clean Rivers project. The Combined Sewer Overflow (CSO) study includes 70 temporary flow meters for a period of one year. The project involves all aspects of flow meter installation, calibration, operation and maintenance, data collection, data analysis, and monthly reporting for the set of flow meters installed in fall 2014. The project involves pipe sizes ranging from 18 inches to 20 feet in diameter, and a wide range of challenging hydraulic conditions. CSL ended up using five different types of flow meter technologies to handle the wide range of hydraulic conditions presented by this project.

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“I have worked with CSL on several different projects, including flow monitoring and smoke testing studies, throughout the past few years and have been very pleased with the results I have received. I would highly recommend CSL to any consulting firm looking for a professional flow metering service company.”

-- Al Sessa, T.Y. Lin International | Medina