Title
Contract with Braun Construction and Design LLC for Construction of the Hazelwood Drive Sewer Replacement Phase 1 Project
Body
RECOMMENDED ACTION (Motion):
Award the bid and authorize the City Manager to execute the Contract Agreement in the amount of $849,485.00 with Braun Construction and Design LLC to provide construction services to complete the Hazelwood Drive Sewer Replacement Phase 1 Project.
BACKGROUND:
The City of Oregon City's Sanitary Sewer Master Plan (SSMP) became effective November 1, 2014. The Hazelwood Drive basin was one of the moratorium areas identified for development restriction until sewer system improvements were made. The current moratorium expires October 1, 2018, and is planned to be presented to the City Commission with a recommendation to extend to October 1, 2019. Completing construction of planned sewer improvements will allow the Hazelwood Drive Sewer Moratorium to be lifted. Hazelwood is the last moratorium area currently enforced under the Public Facilities Strategy. It is the City’s goal to have serviceable sewer improvements in place to lift the Public Facilities Strategy prior to October 2019.
The existing sewer system is complicated by its alignment through private backyards and its proximity to Coffee Creek. Multiple access concerns exist within the area of the existing sewer alignment where the piped system meanders through creek crossings, under trees and structures all within multiple backyards between 923 Hazelwood Drive and 1012 Hazelwood Drive. Performing deep excavation work in these quarters would be very costly and disruptive to residents and the stream.
The design team considered several design options including replacement in place, moving to new alignments and several intermediate options. Geotechnical investigations revealed that subsurface conditions were favorable for a trenchless Horizontal Directional Drilled (HDD) installation of a new pipeline in the Hazelwood Drive right of way. HDD was recomm...
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