The Honouliuli Wastewater Treatment Plant (WWTP) Phase 1C – Headworks, HRBC, Solids Process and Miscellaneous Improvements project is part of a long‑term, multi‑phase initiative led by the City and County of Honolulu Department of Environmental Services. The program delivers major upgrades to both liquid and solids treatment processes, supporting wastewater treatment and environmental protection for Central and West Oahu.

Liquid stream improvements include modifications to the existing Influent Screening Facility, including the addition of two new screening channels and five new screens; construction of a new cast‑in‑place concrete grit removal facility; and conversion of the existing grit removal and aeration tank structure into a High‑Rate Biological Contactor (HRBC) process facility. The biologically enhanced primary treatment system includes five contactor tanks and ten dissolved air flotation (DAF) tanks, improving treatment performance and increasing sludge quality prior to solids processing.

Upgrades to the solids stream introduce a thermal hydrolysis process (THP) ahead of anaerobic digestion. This improvement increases biogas production while reducing digester residence time. Biogas generated through digestion will be used to power two 2.0‑MW cogeneration generators at the combined heat and power (CHP) faciltiy, supplying renewable energy back to the plant and reducing overall energy demand. Supporting these process improvements are significant electrical and controls upgrades, including new low‑voltage switchgear, motor control centers, programmable logic controllers (PLC) and enhancements to the SCADA system—supporting increased biogas generation and cogeneration at a combined heat and power facility.

The project is constructed through a sequenced, three‑phase program to support efficient commissioning: Phase 1, Liquid Stream Improvements; Phase 2, Solids Stream Improvements; and Phase 3, Perimeter and Site Facilities. Scheduled for completion in November 2029, the project will be part of a roadmap to address long‑term growth, resiliency, energy efficiency and environmental stewardship for the City and County of Honolulu.

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Lockheed Martin’s fourth Missile Assembly Building (MAB 4) on its Courtland, Alabama campus expands its presence in the Northern Alabama region.

This pre-engineered metal building (PEMB) comprises a 40,000 SF, 40’ tall high-bay assembly space and an 18,000 SF 14’ tall low-bay space. In addition to the low and high-bays, MAB 4 also includes an 8,000 SF airlock/loading dock area, a 12,000 SF paint booth annex, a 400 SF air compressor PEMB building, a standalone 100-person capacity tornado shelter, a parking lot and miscellaneous civil and site work.

The low-bay houses roughly 20-50 employees and comprises offices, conference space, restrooms, locker space, and additional assembly space for ground support equipment and payload vehicle assembly. The high bay consists of two bridge cranes spanning the south bay with 5-ton and 25-ton capacities, with the opportunity to install future cranes in the north bay. These cranes, in conjunction with the super-flat concrete slab tolerances, allow air pallets to glide across the conductive epoxy flooring installed throughout the high bay assembly area.

Due to the sensitive nature of the assembly material, the entire facility is heavily grounded to prevent any static electricity or energy within the high bay. The epoxy system that covers the floor is conductive epoxy, which has upwards of a 500,000 Ohms resistance, and the entire structure is surrounded by a catenary lightning protection system made up of roughly twenty, 75’ tall poles.

·¬ÇÑÉçÇø¹ÙÍø constructed the base building of the MAB4 from contract award to substantial completion in an aggressive nine-month schedule. This enabled Lockheed Martin to take ownership of the facility to meet its program’s needs.

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The City and County of Honolulu’s Sand Island Wastewater Treatment Plant (WWTP) Secondary Treatment Phase 1 project represents a major investment in Hawaii’s critical water infrastructure and environmental stewardship. This large‑scale upgrade modernizes the existing Sand Island WWTP to provide secondary wastewater treatmentÌýcompliantÌýwith aÌý2010 U.S. Environmental Protection Agency Consent Decree.ÌýÌý

Located on a 24‑acre site between Honolulu’s downtown business district and the airport, the project involves both new construction and significant rehabilitation of existing facilities. Once complete, the upgraded plant will treatÌý20 million gallonsÌýper day (MGD) using advanced membrane bioreactor (MBR) technology, significantly improving effluent quality before discharge through the existing ultraviolet disinfection system and ocean outfall.ÌýÌý

Key elements of the project include construction of a new Intermediate Pump Station and Blower Building, MBR service and processing facilities, sludge thickening and processing systems, enhanced odor control and new effluent flow routing, including tunnels and channels. The project combines new facilities with extensive renovations to the active treatment plant. Ìý

Delivered using a design‑bid‑build approach, the project requires complex sequencing and close coordination toÌýmaintainÌýcontinuous plant operations throughout construction. The work includes extensive cast‑in‑place concrete, below‑grade construction, dewatering and the installation of mechanical, electrical, instrumentation and process systems critical to wastewater treatment performance. Ìý

Scheduled for completion in December 2026, the Sand Island Wastewater Treatment Plant Secondary Treatment Phase 1 project will play a vital role in protectingÌýHawaii’s coastal waters, supporting publicÌýhealthÌýand setting the foundation for future wastewater treatment upgrades across the island.ÌýÌý

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·¬ÇÑÉçÇø¹ÙÍø delivered the $55 million Santa Cruz Facility (SCF) Transition project on Lockheed Martin’s secure campus in Courtland, Alabama. The job replaces the aging SCF with a modern, high-performance facility designed to support Lockheed Martin’s evolving operational needs in the Northern Alabama region.

The scope of work included the renovation of an existing 23,000 SF structure and the construction of a new 50,000 SF multi-purpose addition, housed within a pre-engineered metal building (PEMB) shell. The structural system incorporated robust concrete elements, including foundations, slab-on-grade, slab-on-metal-deck and cast-in-place blast walls, all designed to meet stringent safety and performance standards required by the facility’s secure nature.

A key component of the project involved installing blast-rated ammunition magazine structures, which required specialized procurement, installation and grounding protocols. The demolition scope was extensive, encompassing the removal of the existing catenary mast system, outdated site utilities and structural components.

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Located on Andersen Air Force Base in Guam, the design-build Aircraft Maintenance Hangar consists of a new 76,983-square-foot Type II aircraft maintenance hangar with high-bays, crew and equipment areas, administrative space and a Secure-A area to support the United States Marine Corps Aviation on the base.

The facility consists of three distinct areas: the hangar bay, a two-story maintenance and administration building, and the Secure-A area. Both the hangar and the maintenance/administrative building are constructed to Risk Category III standards. The Secure-A space is designed to meet Risk Category II requirements and is classified as Closed Storage in accordance with the Intelligence Community Directive, Department of Defense Special Access Program, Information Security Program and TEMPEST guidelines. In addition, the Secure-A room, built to Risk Category II criteria, occupies a one-story, 2,478-square-foot structure that is structurally independent from the hangar bay and the two-story building.

Building electrical systems include power, emergency power, lighting, telecommunications, grounding, lightning protection and electronic security systems. Building mechanical systems include fire suppression system, plumbing, heating and air conditioning and compressed air. Site development included airfield pavements, storm drainage structures, domestic water service line, fire water service line, sanitary sewer gravity main, and an industrial waste pipe connected to the hangar trench drain system. The project also includes one 7.5-ton overhead bridge crane with a hoist. The structural frame of the maintenance hangar was designed to accommodate 125% of loading from the overhead bridge crane.

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The Kailua Regional Wastewater Treatment Plant Electrical Improvements project is a key component of the Kailua Regional Wastewater Treatment Plant’s long-term master plan. It advances the City and County of Honolulu’s goal of modernizing operations to handle increased wastewater flows and comply with environmental regulations. By upgrading the plant’s electrical systems, the project enhances efficiency and reliability, minimizing the risk of failures and service disruptions. It also strengthens resilience against natural disasters and emergencies while supporting future expansions and upgrades to other systems. These improvements are essential to ensuring the plant’s long-term viability and its ability to protect water quality and public health throughout the east side of Oahu.

The Kailua Regional Wastewater Treatment Plant Electrical Improvements project included both electrical and control upgrades across 13 buildings in an active facility. The scope included the integration of a new 15kV medium-voltage paralleling switchgear located at the Plant’s Service Entrance, which distributed power to five pairs of medium-voltage substation transformers. This infrastructure provides stable and redundant 480V power to critical processing areas. New low-voltage switchgears with automatic power control sequences were installed at the Effluent Pump Station and the old Kailua Influent Pump Station. Motor control centers were installed downstream of the low-voltage switchgear to provide automated power monitoring and controls to the remaining facilities throughout the plant. These improvements facilitated the removal of the two separate unstable HECO Utility feeds and backup generators, allowing the redundant Utility feed, backed up by the Plants Service Entrance 3-4MW generators, to serve as the central backup power source in case of utility interruptions.

In addition to the electrical improvements, new automated instrumentation and control systems were installed in the critical processing areas and integrated into the plant’s existing Supervisory Control and Data Acquisition (SCADA) system to improve operational management and monitoring. Architectural, structural, access controls, and HVAC enhancements were implemented to support the buildout of electrical rooms, ensuring they meet operational requirements and provide a safe, functional environment for new electrical equipment.

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The Limelight Boulder Hotel and Conference Center is a new hospitality destination located on the University of Colorado Boulder campus. This $164 million, 248,000 SF project brings modern design and convenience to the heart of Boulder. The hotel features 252 guest rooms, including 35 suites, and offers a comprehensive range of spaces for conferences, events and leisure stays.

The facility features a 15,000 SF main ballroom, a 3,500 SF junior ballroom and 5,500 SF of meeting rooms that support a variety of event needs. Amenities include a full-service restaurant, retail space, a fitness center, an outdoor pool and an event terrace that creates an active and welcoming environment for visitors and the surrounding community.

The project turned a vacant site into a new hub for the campus and the city. The work included roadway and utility improvements, as well as rebuilding a key bike and pedestrian path for safer access. The hotel resulted from close collaboration between the University, the City of Boulder and project partners. To further support the community, the city created a fund using hotel tax revenue to assist local nonprofits and civic groups in using the new conference facilities.

Limelight Boulder was built to meet LEED Gold standards and operates entirely on electricity. The design reduces energy use and supports Boulder’s climate goals.

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Located at Marine Corps Base Hawaii, the Repair Water Reclamation Facility (WRF) Secondary Clarifier involves significant upgrades to the base’s WRF secondary clarifier to enhance its operational efficiency and reliability.

The primary scope of work includes the removal and replacement of the rotating sludge collection rake mechanism within the existing secondary clarifier. This essential component is responsible for the effective collection and removal of sludge, ensuring the smooth operation of the water reclamation process. Additionally, the project encompasses the replacement of the scum skimmer, sludge valves, and isolation valves on the inlet and outlet pipes, which are crucial for maintaining the integrity and functionality of the clarifier system.

To address environmental and safety concerns, the project also involves lead paint remediation, floor grout replacement, and tank coating. These measures are vital for ensuring a safe working environment and prolonging the lifespan of the facility. Furthermore, temporary modifications to the chlorine contact tanks, including slide and scum removal, and the installation of temporary effluent filter systems, are part of the comprehensive upgrade plan. These temporary systems will supplement the existing filtration and treatment processes during periods of inoperability, ensuring continuous operation and compliance with environmental standards.

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The Repair Wastewater Treatment Plant Effluent Pump Station Building 1357 stands as the Pacific Region’s first federal wastewater infrastructure project. Situated at Joint Base Pearl Harbor-Hickam in Hawaii, this initiative involves the complete replacement of the above-ground portion of the existing effluent pump station, along with all associated support equipment currently housed within Building 1357 and its adjacent areas.

Central to the upgrade is the installation of three high-efficiency 10 million-gallon-per-day vertical turbine pumps and a modern motor control center, which has a fully integrated Supervisory Control and Data Acquisition (SCADA) system. This advanced system brings a transformative leap in operational efficiency, reliability and user functionality. It enables precise control of wet well levels and leverages predictive diagnostics to reduce maintenance needs and minimize downtime through automation and supervision.

The integration of real-time monitoring and advanced SCADA programming fosters a comprehensive awareness of system performance, empowering operators to manage the facility proactively and build long-term resilience. The facility’s clean and functional layout, paired with an intuitive interface, enhances productivity and simplifies maintenance and system overhauls. Moreover, the new design ensures full compliance with evolving environmental regulations and reporting requirements, positioning the station as a model of modern wastewater management.

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The Downtown Redmond Link Extension project is a $730 million design-build contract under Sound Transit, a Seattle-area public transit agency. The LEED Gold-certified project includes a 3.4-mile extension to their current light rail system, a 1,400-stall parking garage, traction power substations, associated utilities, street and trail improvements and two new light rail stations—one at-grade and one elevated—in southeast Redmond, WA. ·¬ÇÑÉçÇø¹ÙÍø is a super-trade partner on the project and is responsible for constructing the cast-in-place parking garage and two light rail stations. While the Downtown Redmond Link Extension spans 3.4 miles, the elevated-at-grade Downtown Station is considered the crown jewel of the entire project.

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