In 2018, when the Blue Plains Tunnel was brought online, the Tunnel Dewatering Pump station (TDPS) and Enhanced Clarification Facility (ECF) began accepting the millions of gallons of combined sewage that previously flowed into the District’s waterways during heavy rain storms. That flow will now receive treatment. To that end, DC Water undertook a massive $215 million construction project including a multi-story 165-foot deep pump station housing the main tunnel dewatering pumps and other supporting mechanical and electrical equipment, and instrumentation and control systems. The ECF includes a process treatment system, together with mechanical, electrical and instrumentation control equipment.
In support of this effort, F&R conducted materials testing and inspections of the various construction elements including:
• Driven H-Piles
• Drilled Piers
• Soils
• Concrete Formwork
• Reinforcing Steel
• Cast-in-Place Concrete
• Precast Plant Inspections & QC Review
• Structural Steel
• Welding
• Steel Decking
• Light Gauge Steel Framing
• Masonry
• Aggregate
• Asphaltic Pavements
