Major Sewer Improvement Effort

Southeast Interceptor Sewer Augmentation (SEI) Project

The Pima County Regional Wastewater Reclamation Department (RWRD) and its contractor, KE&G Construction, Inc., will soon begin constructing the Southeast Interceptor Sewer Augmentation (SEI) project, a 2.6 mile project, which extends south from Simpson to 36th Streets and east along 36th Street between 7th and Euclid Avenues. The SEI project will upgrade a portion of the existing SEI to address capacity limitations between Simpson and 36th Streets. Ultimately wastewater flows from a new Old Nogales Highway interceptor, including developments along the planned Aerospace Corridor, will also be conveyed by the SEI project.

A new 36-inch to 42-inch diameter sewer interceptor pipeline will be installed, in addition to the sewer installation. Construction activities will also include drainage improvements, odor control facilities, bypass pumping, asphalt paving and waterline relocations.

Ultimately wastewater flows from a new Old Nogales Highway interceptor, including developments along the planned Aerospace Corridor, will also be conveyed by the SEI project.

Construction will take place along the eastside of Interstate 10 from 17th to 36th Streets and east along 36th Street from 7th to Euclid Avenues. There will also be some construction activities along the newly designed Greenway path.

RWRD is employing the Construction Manager at Risk (CMAR) approach, which relies on the construction expertise of the Contractor (KE&G) and ability to cooperatively work with the Design Consulting Engineer (Westland Resources) to avoid potential problems and to minimize costs wherever practical. It allows the Owner, Design Consultant and the Contractor to effectively work together as a team to complete the sewer interceptor augmentation project.

The SEI project is scheduled to begin Spring of 2016. The traveling public should expect delays and lane closures when driving, bicycling, or walking in the area. For your safety, please observe all traffic control signage, message boards and obey reduced speed limits.

For project updates or to find out more information, fill out our form below.

Pima County