Cities Index.
agenda-report NOTICE OF COMPLETION FOR THE GROUNDWATER DRAINAGE IMPROVEMENTS AT COPLEY DRIVE AND AT MOONLAKE STREET, PROJECT NO. PW23401).

Diamond Bar City Council
June 4, 2024

Document
agenda-report NOTICE OF COMPLETION FOR THE GROUNDWATER DRAINAGE IMPROVEMENTS AT COPLEY DRIVE AND AT MOONLAKE STREET, PROJECT NO. PW23401).
Meeting
June 4, 2024
Body
Diamond Bar City Council
Original file
191 KB
Text extracted from the city's file for reading and search. Open the original on diamondbarca.iqm2.com. That file is the official record.

Agenda #: 5.6
Meeting Date: June 4, 2024
TO: Honorable Mayor and Members of the City Council
FROM: Daniel Fox, City Manager
TITLE: NOTICE OF COMPLETION FOR THE GROUNDWATER DRAINAGE

IMPROVEMENTS AT COPLEY DRIVE AND AT MOONLAKE STREET,
PROJECT NO. PW23401).

STRATEGIC
GOAL: Safe, Sustainable & Healthy Community
RECOMMENDATION:

Approve, and authorize the Director of Public Works/City Engineer to file the Notice of Completion.

FINANCIAL IMPACT:

The Fiscal Year 2022/2023 Capital Improvement Program (CIP) included $530,000 in Measure W funds for the construction phase of this Project. The final cost of the construction, including one change order, is $246,044.83, which is just under the total contract authorization amount of $246,166.80.

BACKGROUND/DISCUSSION:

On July 18, 2023, the City Council awarded G&A Nelos Construction Inc. (G&A) a construction contract for a total authorization amount of $244,166.80 including a 10% contingency of $22,378.80. The City issued the Notice to Proceed for the construction work on August 29, 2023.

The Project goal was to eliminate groundwater and nuisance drainage in front of the City Hall on Copley Drive and in front of 20834 Moonlake Street just north of the SR 60 Freeway. The improvements were part of the multiphase 2015 Citywide Comprehensive Drainage Study recommendations. The Study identified eleven (11) locations throughout the City that have been experiencing groundwater discharge onto public sidewalks and/or roadways, impacting vehicular and pedestrian traffic. A priority list, preferred design scenarios, and projected costs were developed for each location, with those with the highest potential impacts on vehicular/pedestrian uses given the highest

priority. With the completion of these two (2) locations, four (4) locations remain to be addressed.

G&A completed all necessary improvements on May 9, 2024. A single change order in the amount of $22,256.83 was authorized by the City. This change order was for opencut trenches across driveways to lay down pipes, while the originally planned boring was not possible due to soil conditions and the presence of rocks.

PREPARED BY:

REVIEWED BY:

Attachments:

1. 5.6.a Notice of Completion

← All documents from this meeting