



Bissell & Lemay Wastewater Treatment Facility - Fluidized Bed Incinerators (Design-Build)
St. Louis, Missouri
Dynotec is providing architectural and structural engineering services for a large design-build project focused on the selective demolition and renovation of two key campus facilities: the Maintenance Building and the I&F Building.
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Both buildings required strategic partial demolition to make way for a new Receiving Building while preserving critical connections to existing infrastructure. This included removal of the upper two floors of each building and the northern half of the I&F Building, while maintaining the lower floors to act as a connector to the facility’s tunnel system.
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Dynotec’s design scope modernized the remaining Maintenance Building, transforming it into the new Receiving Building with an 8,000 sf Receiving Area, offices, mechanical/electrical rooms, and supporting amenities. New roofing systems, plumbing, electrical, and HVAC were integrated into both buildings, with additional outdoor covered and fenced storage totaling more than 12,000 sf. The existing two floors of the I&F Building, along with its elevators and stairs, were retained and incorporated into the new layout.
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Dynotec managed the project through every stage of design, from Basis of Design to final approvals. This included 60%, 90%, and 100% design submissions, responses to AHJ comments, preparation of final drawings/specifications, and construction submittal reviews. During construction administration, Dynotec continues to support the client with on-site observations, field reports, RFI responses, punch list reviews, and closeout documentation.
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The Result: By balancing demolition with adaptive reuse, Dynotec’s approach preserves valuable infrastructure while delivering a modern, functional Receiving Building tailored to the facility’s operational needs. The outcome is a cost-effective solution that enhances efficiency, integrates seamlessly with existing systems, and extends the useful life of the site’s critical assets.
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