On February 23, the Northern California Chapter of the American Public Works Association awarded the City of San Mateo’s El Cerrito Relief Line Project with the 2017 Public Works Project Award in the "Environment - Between $5 and $25 Million" category.
Key challenges for this $9.6 million project stemmed from the sewer line path, which traverses a major artery at El Camino Real Boulevard (SR 82), crosses environmentally sensitive San Mateo Creek and passes under the busy Caltrain corridor to reach the treatment plant.
As designer for project, Harris & Associates’ Kourosh Iranpour, PE, QSD joined fellow colleagues and project team members in receiving the award at the chapter’s Annual Project Awards Luncheon in San Ramon, CA.
"For me, the most intriguing part of the project was to determine the most feasible method of construction through the creek," explains designer Kourosh Iranpour. "Open cutting through the creek would have created numerous environmental challenges and potentially delayed the construction of the project. We therefore decided to use an inverted siphon to tunnel beneath the creek using the trenchless method of Pilot Tube Guide Boring, which eliminated the environmental concerns and facilitated timely completion of the project."
The project included construction of approximately 4,150 linear feet of 27-inch and 5,700 linear feet of 30-inch sanitary sewer pipeline using trenchless and open-cut construction methods.
Congratulations to the entire project team on their win!