Title
Consider and take action on a resolution authorizing a Construction Manager at Risk Agreement with CSA Construction, Inc. to provide pre-construction phase services for the Southwest Water Reclamation Facility Expansion (WW2201) in an amount not to exceed $683,440 (Executive Director of Capital Projects)
Background
Approval of this resolution will authorize a Construction Manager at Risk (CMAR) Agreement with CSA Construction, Inc. to perform, or have subconsultants perform, pre-construction phase services associated with the Southwest Water Reclamation Facility Expansion (WW2201).
The City is in the design phase of the expansion to its Southwest Water Reclamation Facility (SWWRF) from 4.0 MGD to 8.0 MGD to serve the growth in the City’s southwest sector. The City’s consultant previously conducted a capacity and re-rating study of each current treatment unit. The study recommended re-rating the secondary treatment units, aerated sludge holding tanks, and dewatering system from the current permitted Annual Average Daily Flow (AADF) of 4.0 MGD to 5.4 MGD and submitted the re-rating study to TCEQ and received approval. Therefore, the scope of this expansion project is the additional component improvements that will be required to expand the SWWRF from 5.4 to 8.0 MGD. Some of the project features are:
- Study feasibility of possible addition of new coarse screening structure ahead of influent lift station
- New ultimate peak flow capacity influent lift station
- Expansion of headworks facility for ultimate capacity
- New aeration basin and blower system
- New secondary clarifier with scum pump station
- Expansion of return and waste activated sludge pump system
- New flow splitter structures
- Expansion of tertiary filtration system
- Expansion of ultraviolet (UV) system
- Expansion of post aeration basin
- Expansion of effluent pump station and improvement to existing effluent outfall
- New aerated sludge holding/aerobic digesters
- Expansion of sludge ...
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