Headworks, aeration basins, clarifiers, digesters and disinfection systems, built within permit constraints and next to operating process trains.
Treatment, conveyance and resource recovery
Wastewater
*We expand and upgrade wastewater treatment plants while they keep running, and we build the pump stations and force mains that move flow to them. Permit compliance does not pause for construction.
- Largest plant expansion delivered
- 46 MGD
- Liquid-retaining concrete placed
- 180K CY
Overview
How we build for wastewater owners
A wastewater plant cannot be turned off. New aeration basins, clarifiers, digesters and headworks have to be built within feet of operating process trains, and every tie-in has to be coordinated with plant staff who are answerable to an NPDES permit. We plan these tie-ins as discrete, rehearsed events, with bypass pumping, temporary power and contingency plans in place before the work starts.
Our concrete crews have placed more than 180,000 cubic yards of liquid-retaining structures, with water-tightness testing and crack-control detailing that meets ACI 350 requirements. We install process piping, mechanical equipment and the electrical and instrumentation systems that tie into plant SCADA, working with the owner's controls integrator through factory acceptance testing, functional testing and commissioning.
Odor control, noise and truck traffic matter to the neighbors of every plant we work in. Our community relations plans, early-morning haul restrictions and odor-management measures have kept complaints at a minimum on projects that ran for three years or more.
Owner priorities
What matters on these projects
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01
Permit compliance during construction
Tie-ins, shutdowns and bypass operations are scheduled around permit-sensitive periods, with effluent quality protected by temporary process controls and daily coordination with plant operators.
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02
Capacity for growth
We help owners phase work so new capacity comes online when flows demand it, avoiding premature debt service and stranded assets.
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03
Controls and commissioning
SCADA integration, loop checks, functional testing and operator training are scheduled as deliverables rather than afterthoughts, with a commissioning lead assigned before notice to proceed.
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04
Safe work around hazardous atmospheres
Confined-space entry, H2S monitoring, lockout/tagout and hot-work permitting are managed under a written program audited monthly by our Director of Safety.
By the numbers
Wastewater work to date
- Largest plant expansion delivered
- 46 MGD
- Liquid-retaining concrete placed
- 180K CY
- Lift and pump stations built
- 63
- Permit violations caused by construction
- 0
Capabilities
What we self-perform
6 capabilities our crews deliver for wastewater owners.
Wet-well, dry-pit and submersible stations from neighborhood lift stations to regional raw water and stormwater pumping facilities.
Large-diameter water, sewer and force mains in ductile iron, steel, PCCP and HDPE, installed by open cut, trenchless and directional methods.
Cast-in-place and precast concrete for tanks, basins, structures and foundations, formed, reinforced and placed by our own crews.
Mass excavation, grading, soil improvement, stormwater and erosion control for plant sites, corridors and levees.
Design-build, progressive design-build and CM/GC delivery with early cost certainty, constructability input and a single point of responsibility.
Projects
Recent wastewater work
01 / Wastewater / Port Orchard, WA
Harbor Point WWTP Expansion
$100M–$250M · Progressive Design-Build · In progress
02 / Wastewater, Water / Boise, ID
Millrace Pump Station
$25M–$100M · Design-Bid-Build · 2018
03 / Wastewater / Salem, OR
Basin 7 Lift Station Program
$25M–$100M · CM/GC · In progress
Planning wastewater work?
Tell us about the project. We will share budget-level numbers, constructability ideas and a realistic schedule before you commit.