Scope_of_Work_final.pdf

Scope of Work RFP194078 – 3-Year Water System Leak Detection Services

INTENT OF REQUEST FOR PROPOSALS

The City of Palo Alto (“CPA”) invites sealed proposals for leak detection services for the City’s water distribution system. This project aims to identify leaking drinking water pipelines in the CPA Water distribution system and locate sub-surface leaks. The services will help the CPA Utilities Department reduce water loss and meet the California State’s water loss requirements. The scope of the work shall include a leak survey of the entire water distribution network, see Table #1 in “City of Palo Alto Distribution Network Information” for system information.

OVERVIEW

In October of 2015, the Governor of California signed Senate Bill (SB) 555 into law to improve water system auditing and create water loss standards throughout the state. SB 555 requires all California Urban Retail Water Suppliers to analyze the economic benefits of leak detection. The City of Palo Alto completed the economic analysis in 2023, and the CPA has decided to move forward with soliciting a service provider to perform the leak detection work of the City’s water distribution network.

The City of Palo Alto owns and maintains potable water distribution and water pumping facilities for drinking water across the City’s boundaries. Palo Alto manages 231 miles of water mains. The water main sizes range from 4” to 24”. Over the half of the system is ACP water main. In addition to ACP the system also includes the following materials:

HDPE, Ductile Iron, Cast Iron, PVC, Concrete Cylinder, Copper, Steel, and Galvanized Steel pipes.

In response to ongoing drought conditions, the City is dedicated to decreasing water loss within its distribution system. Early detection of sub-surface water leaks will allow the city to promptly repair water assets and prioritize pipelines for replacement.

Respondents shall request a copy of the City’s Utility Map Request Form and submit the completed Utility Map Request Form to utilitymaprequest@cityofpaloalto.org. Include “Water System Leak Detection Services” in the title of the subject line.

mailto:utilitymaprequest@cityofpaloalto.org

Table 1: City of Palo Alto Distribution Network Information

PROJECT SCOPE AND DELIVERABLES

The project purpose is to complete a leak detection survey and report for each of the three project years to provide the city with an annual report documenting system leak location and estimate of leak rate.

1) TASK A: For a three-year duration of the project, develop a leak detection plan to cover the entire City of Palo Alto’s water distribution system. The plan should include timeline, project phasing, project procedures and leak detection methodology.

Deliverables for this task shall include: a draft plan for city review and a final plan based on city review comments.

2) TASK B: For each year, provide the necessary services and or equipment to identify system leaks. Results of this task shall be documented in task C.

3) TASK C: For each year, provide a report summarizing the methodology and provide leak system results and prioritization of identified leaks.

PROJECT PROPOSAL RESPONSE shall include

• Cover letter (1 page)

• Description of technology and equipment methodology for performing leak survey detection, including a performance matrix for accuracy of the approach and a plan for traffic control.

• Proposal shall include:

1. Responder’s project understanding

2. Responder’s specific approach to the project.

3. Responder’s proposed scope of work.

• Fee and schedule to perform the three-year project scope.

• References, at least five references from previous relevant projects of similar scope, and within the past five years.

Miles of Water Main 231 Miles

Average Daily System Demand 8.8 MGD

Number of Pressure Zones 9

Number of Services 23,787

Number of Wells, Reservoirs, Pump Stations 8, 7, 7

Number of Hydrants 1,947

CITY’s RESPONSIBILITIES:

1) Public notification

2) Furnish service providers with signage (service provider to post the provided signage)

3) Provide site access to city facilities

4) Coordination with other city projects

ADDITIONAL SCOPE

The City of Palo Alto reserves the right to add or subtract potential leak sites to this Contract as the need arises. In the event the City adds or removes leak sites to this Contract, the pricing for any additions or reductions to services shall be applied per the applicable Contract unit costs. Any additions or subtractions to the Contract shall be done via a written change order and be a MINIMUM of thirty (30) days notification prior to the changes taking effect.