HomeMy WebLinkAbout11/16/2004, C5 - NIPOMO STREET MINOR DRAINAGE IMPROVEMENT i
council Nov 16, 2004
j agenda RepoRt
CITY OF SAN LUIS OBISPO
FROM: Jay Walter, Acting Director of Public Wor
Prepared By: Barbara Lynch, Supervising Ci 1 Engineer`
SUBJECT: NIPOMO STREET MINOR DRAINAGE IMPROVEMENT
CAO RECOMMENDATION
1. Approve new Capital Improvement Project for a minor drainage improvement on Nipomo
Street in the amount of$28,000.
2. Transfer$28,000 from the CIP Reserve to fund the project.
DISCUSSION
During the summer of 2004, the City street maintenance staff replaced a large section of
sidewalk, curb and gutter along the west side of Nipomo Street between Higuera and San Luis
Obispo Creek. Trees in the area had lifted portions of the sidewalk and a series of low spots
developed generating complaints from the area. The low spots collect water and result in a series
of puddles.
The street crew determined it was not possible to create positive drainage from Higuera, north to
the creek, without major reconstruction of the whole street. This was confirmed by engineering
staff in the field. While there is good slope starting at Higuera and going north, the street quickly
flattens and then rises slightly at the bridge over San Luis Obispo Creek.
After reviewing the various options, staff opted to remove the individual low spots, correcting
damage to the sidewalk and curb from the street tree, and centralize the water at a single point.
If it was determined that water collection was significant in wet weather, an inlet could be
installed at that single low point and piped to the creek. With the first rains behind us now, we
have received notice from the property owner adjacent to the low spot that water is collecting in
the low point and rising to the top of the curb, coming up on the sidewalk at times.
Staff believes water accumulation is significant enough to warrant the installation of an inlet at
the low point to pipe the water to the creek.
FISCAL IMPACT
The time is approaching for the submittal of mid-year CIP requests. Staff considered this
approach, but believed this would postpone the installation of this drainage improvement until
summer. Approval at this time would allow staff to proceed with the project design and
environmental review immediately, with possible construction occurring this winter.
It is anticipated at this time, due to the proximity of the project to the downtown, mission
buildings and the creek, that some level of archeological review will be required. The last
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Nipomo Street Minor Drainage Improvement Page 2
project completed in this area did not find a significant amount of archeological materials, so
staff is planning for only a moderate expenditure for the necessary studies and monitoring.
Archeological study $3,600
Construction- $19,000
Construction Contingencies: $1,900
Total for Construction: $24,500
Miscellaneous: (printing): $500
Monitoring: $3,000
Total Cost: $28,000
The CIP Reserve currently has a balance of $48,412 available to support this project.. If the
Council approves this funding source for the project, there will be $20,412 remaining in the CIP
Reserve for other project overruns.
ALTERNATIVES
The project could be submitted and reviewed with the mid-year budget or as part of the 2005-07
Financial Plan. If approved through one of those processes, the project would be delayed for
approximately 4 to 9 months.
ATTACHMENTS
Attachment 1 - Location Map
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