2009 Comprehensive Sewer Plan identifies the need for broad inflow
(surface water entering the sewer system) and infiltration (groundwater)
reduction efforts. The Central Basin Inflow and Infiltration (I&I) Project
is designed as a pilot project to study I&I contributions and evaluate
techniques and cost for rehabilitation of the sewer system. The
rehabilitation will consist of replacing and relining sewer mains and
individual sewer service laterals by trenchless methods. Trenchless
rehabilitation will minimize digging and trenching disturbances.
The Central Basin (Sunnyland) Project area was identified due to the high amounts of I&I in the sewer basin, a significant number of sewer mains in the basin already identified for replacement, and large amounts of I&I from private laterals. The project would reduce I&I by replacing sewer mains, repairing manholes, and replacing private laterals.
Accomplishments: Continuing sewer service and main
replacement. The blocks between Illinois and Kentucky, Ellis and Grant, have
been completed. Project is currently 80% completed.
Next Milestones: Continue to move south from North Street to replace sewer services and mains between Dean and Ellis Streets. Anticipated project completion at the end of May 2013.
Craig Mueller, P.E.
Phone: (360) 778-7922
Email Public Works