TO:
Honorable Mayor and Members of the City Council
THROUGH:
David N. Carmany, City Manager
FROM:
Jim Arndt, Public Works Director
Michael A. Guerrero, Principal Civil Engineer
SUBJECT:Title
Second Amendment ($13,000) to the Professional Services Agreement with Psomas for Additional Design Services for the Sepulveda Boulevard and 2nd Street Water Main Replacement Project.
APPROVE
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Recommended Action
RECOMMENDATION:
Staff recommends that the City Council authorize the City Manager to approve the Second Amendment to the Professional Engineering Services Agreement with Psomas for additional design services for the Sepulveda Boulevard and 2nd Street Water Main Replacement Project in the amount of $13,000.
Body
FISCAL IMPLICATIONS:
Funding for this project has been appropriated by the City Council in the amounts indicated in Attachment No.1.
BACKGROUND:
This project is part of the City’s ongoing program to replace aging water mains within the City’s water distribution system. This project provides for construction of replacement water mains and new fire hydrants along Sepulveda Boulevard from Manhattan Beach Boulevard to 2nd Street and along 2nd Street from the Larsson Street Pump Station to the 2nd Street Pump Station. In addition, new or replacement pipes crossing Sepulveda Boulevard would be constructed at 3rd, 9th, 10th, and 11th Streets.
The existing water mains on the west side of Sepulveda Boulevard are 70 to 80 years old. Replacing these mains and the main along 2nd Street will assure the longevity and dependability of the water system.
On April 3, 2012, the City Council awarded a professional engineering services agreement to Psomas for design services for the Sepulveda Boulevard and 2nd Street Water Main Replacement Project in the amount of $75,000, approved the First Amendment to the Agreement with Psomas in an amount not-to-exceed $5,000 for additional water system computer modeling, and appropriated Water Fund reserves in the amount of $25,000.
DISCUSSION:
The original design contract with Psomas includes potholing services to determine existing pavement structural sections and subsurface soil materials. The Second Amendment (Attachment No. 2) to the Psomas Agreement provides for additional pothole and pavement core services and associated technical soil observation. Based on review of the preliminary plans which detailed existing utilities and the proposed new water main alignment, the design engineer, Program Manager (VA Consulting), and City Engineer determined that additional potholes were needed to identify potential utility conflicts in order to minimize potential changes during construction. Additional consideration was given due to Sepulveda Boulevard being on CA State Department of Transportation (Caltrans) right-of-way and significant associated traffic impacts. The additional services proposed will be completed at a cost of $13,000.
CONCLUSION:
Staff recommends that the City Council authorize the City Manager to approve the Second Amendment to the Professional Engineering Services Agreement with Psomas for additional design services for the Sepulveda Boulevard and 2nd Street Water Main Replacement Project in the amount of $13,000.
Attachments:
1. Project Budget and Expenditures
2. Second Amendment to Psomas Agreement