As part of a large sewer system program being performed by the Sewerage and Water Board of New Orleans, Trigon was a sub-consultant for design and construction phase services of multiple projects for the rehabilitation of sewer facilities in two sewerage basins of New Orleans – the South Shore Basin and the Ninth Ward Basin.
The rehabilitation measures designed were intended to restore structural integrity and eliminate significant sources of infiltration/inflow and included manhole rehabilitation (e.g., frame and cover replacements, horizontal and vertical adjustments, internal lining of manhole walls) and gravity sewer line rehabilitation (e.g., excavated point repairs, full line replacements, cured-in-place pipe lining, pipe bursting, service lateral replacements).
The general services provided as part of these projects include:
• Preliminary Design—development of remedial measures, construction contract packaging, development of a Preliminary Design Report, and presentation to a Technical Review Committee
• Final Design—preparation of plans and specifications, cost estimates, and obtaining permits for multiple construction contracts
• Bid Phase Services—advertisement of contracts, pre-bid conferences, addenda preparation, bid tabulations and award recommendations
• Engineering Services During Construction—reviewing submittals and shop drawings and responding to contractor requests for information and clarifications
Approximately $15M of rehabilitation construction will result in South Shore, while $25M of construction occurred in Ninth Ward. Construction in the Ninth Ward has been ongoing while repackaging of the South Shore design work is underway due to Consent Decree requirements.
A GIS was used to develop the rehabilitation plans for each construction project. Coupled with standard specifications, these plans formed the basis for the construction contract documents.
Trigon Associates, LLC provided engineering services through all project phases.
Saudi Arabia Trigon is building strategic partnerships in Saudi Arabia, providing expertise in water systems, urban infrastructure, and construction management for large-scale development programs.
Let’s collaborate on infrastructure that drives lasting impact across the Kingdom. Click below to see Trigon’s global impact and contact Greg Kolenovsky, Managing Partner and KSA Office General Manager.
Trigon’s Asia portfolio includes environmental remediation, water infrastructure, and capacity-building projects—most notably the Bien Hoa Airbase in Vietnam. There, we developed the Master Plan, built long-term storage for contaminated materials, designed site and infrastructure improvements, and delivered a War Remnants Museum. As Program Manager, we also provided engineering oversight, construction management, and environmental safeguards to address one of the region’s most complex contamination challenges.
Contact Greg Kolenovsky, PE, PMP, PgMP – Managing Partner, to learn how Trigon can support safe, sustainable development across Asia.
From Texas to Florida, Trigon has decades of experience advancing coastal protection, flood defense, hazard mitigation, disaster recovery, resilient architecture, and environmental solutions. Whether it’s expanding infrastructure for growing communities, fortifying them to withstand storms, or helping them come back stronger, our engineers and CFMs deliver practical, lasting results.
Reach out today to partner with the Trigon team. Greg Kolenovsky, PE, PMP, PgMP – Managing Partner, can show you how our expertise in coastal protection, hazard mitigation, disaster recovery, resilient architecture, and environmental solutions will enhance and complement your team. Together, we can strengthen Gulf Coast communities and build resilience that lasts. Use the contact button below to get started.
Jordan Our Jordan experience spans large-scale education, water, and municipal projects under USAID programs. From school rehabilitation to water resource management, we provide design oversight, QA/QC, and training to build sustainable local capacity.
Click “Learn More” to explore Trigon’s experience delivering results internationally, then connect with Sal Mansour – President to discuss how we can bring that same expertise to your next project.
D.C./Virginia Our team supports federal clients with water, environmental, and resiliency projects. With deep experience in compliance and stakeholder engagement, we deliver solutions that meet complex needs.
Discover more about our federal projects and see how Trigon’s expertise can strengthen your next initiative—contact Sal Mansour – President, to explore teaming opportunities.
Haiti/Caribbean In the Caribbean, Trigon provides design review, construction supervision, and disaster recovery expertise for vital infrastructure projects. Our team partners with governments and international agencies to build resilient ports, roadways, and community systems.
Click below to see our global project experience or contact Sal Mansour, President, to learn how Trigon can make your projects successful anywhere in the world.
Houston, TX Trigon supports Houston-area clients with critical infrastructure improvements, including wastewater, stormwater, and disaster recovery projects. Our services range from planning and design to construction management and compliance.
We’ve spent decades helping Gulf Coast communities rebuild stronger after storms—see how our experience can work for you through our Texas and Gulf South projects, or connect with Regina Cassanova, our Texas Regional Manager, using the buttons below.
New Orleans (HQ) Our New Orleans headquarters serves as the anchor for Trigon’s work, domestically and abroad.
From municipal infrastructure, disaster recovery, and community resilience to water and wastewater systems, hazard mitigation and capital improvements, our home office provides the technical leadership and support that powers our projects locally and around the world.
Ready to collaborate? Click below to explore our New Orleans project portfolio or connect directly with our CEO, Michelle Herbert, to start the conversation.
West Bank/Gaza Trigon has a proven track record of delivering USAID-funded water and wastewater infrastructure across the West Bank and Gaza, including reservoirs and packaged treatment plants. Every project is guided by our commitment to quality, safety, and building local capacity through training.
Connect with Souheil “Sal” Mansour – President, to explore how we can create infrastructure that transforms lives—together.
Our New Orleans headquarters serves as the anchor for Trigon’s work, domestically and abroad.
From water distribution, wastewater treatment, and disaster recovery to drainage, hazard mitigation, and program management, our home office provides the technical leadership and support that powers our projects locally and around the world.
Ready to collaborate? Click below to explore our New Orleans project portfolio or connect directly with our CEO, Michelle Herbert, to start the conversation.
