Title
Contract for Construction of 15th Street Storm Sewer Improvements Project
Body
RECOMMENDED ACTION (Motion):
Authorize the City Manager to execute the contract with Emery & Sons Construction Group for the 15th Street Storm Sewer Improvements Project (CI 17 - 009).
BACKGROUND:
In 2017, an inspection of the existing storm system was conducted as part of the Pavement Maintenance Utility Fee (PMUF) Roadway Reconstruction Project on 15th Street. Two sections of the piped stormwater system were found to be damaged enough to justify extensive repairs prior to roadway reconstruction. One of the damaged sections is approximately 260 linear feet between Jackson Street and JQ Adams Street where the pipe is aged; in several locations the pipe has structurally failed and collapsed. Repairs at this location include replacing a manhole at Jackson Street and 15th Street with a new manhole and replacing the 260 lineal feet of failed pipe.
The other location requires replacement and upsizing of approximately 110 linear feet of pipe between Center Street and Main Street. Repairs for this location include two new manholes in 15th Street and replacement of the 24-inch diameter pipe with 36-inch new pipe. Through our more detailed project scoping and deficiency research, it was determined that the existing catch basins at the corner of 15th and Main were plumbed into the sanitary system, so two new catch basins need to be installed and re-plumbed to the new manhole at Main Street. The initial discovery of the pipe deficiencies required the City to delay further paving work on these two sections of 15th Street until the stormwater system improvements could be designed, bid, and built.
In August, 2017, the City executed a design contract with Wallis Engineering. In March, 2018, the City solicited bids for the 15th Street Storm Sewer Improvements Project. Four responsive bids were received. City staff and consultant personnel from Wallis Engineering reviewed the bids and deter...
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