ADOPTED BUDGET RESOURCE ALLOCATION PLAN - City of ...

Project: 900252 Mountain View/Hetch-Hetchy Intertie
Origination Year: 2005-06
Planned Completion Year: 2010-11
Department: Public Works
Project Description / Scope / Purpose
Project Information Sheet
Type: Water
Category: Infrastructure
Project Manager: Hira Raina
Fund: 460 Water Supply and Distribution Fund
Sub-Fund: 300 Water Infrastructure Subfund
Project Coordinator: Jim Craig
This project would provide Sunnyvale's share for a feasibility study and subsequent design and construction of an intertie around an isolation valve in the Hetch Hetchy system. The City of
Mountain View initiated contact with Sunnyvale for this venture. Mountain View is eligible for grant funding and their grant application is pending approval. Other existing interties with the City
of Mountain View will also be studied.
Water is delivered to the cities of Mountain View and Sunnyvale through the Hetch Hetchy pipeline. An intertie, as an adjunct to existing inter ties in the Mountain View and Sunnyvale water
systems, would provide a means for the two cities to receive water supply during times when the Hetch-Hetchy system is down locally. If a section of the supply line is down, the other city could
receive water through its counterpart. Sunnyvale could receive water from the north through Mountain View, and Mountain View would receive water from the south through Sunnyvale. The
intertie, unlike existing ones, would be in the northern part of the City near the pipelines, and sized to provide larger quantities of water to the two systems than is now possible.
The feasibility study, is estimated to cost $100,000. Mountain View would pay for 25%, Sunnyvale's share would be 25%, and the rest would be paid with Prop. 50 grant money. Construction of
the intertie, if the grant is awarded, would follow the study. Estimated project construction cost is $1 million, with 50% of the cost borne by Sunnyvale and Mountain View (25% each). The other
50% would be paid by the grant.
Project Evaluation and Analysis
This project would maintain water supply to the Sunnyvale and Mountain View areas in case of an emergency resulting in the shutdown of the Hetch-Hetchy line on one side of the San Francisco
gate valve, or the other, such as due to an earthquake or some other localized problem. If the entire system is shut down, then this intertie can still be effective in moving water between our systems,
as long as there is sufficient supply from some other source, such as the Santa Clara Valley Water District, and groundwater wells.
Fiscal Impact
A feasibility study will determine the specific improvements needed to make the intertie. Mountain View applied for Prop 50 grant funding on behalf of both cities. The application is strengthened
by making it a combined project of two cities. The project is revenue dependent and will not move forward without Prop. 50 and Mountain View contributions.
Project Financial Summary
Unfunded Project
Financial Data Prior
Actual
Project Costs
Revenues
Total
Transfers-In
Total
Operating Costs
Current 2010-11 2011-12 2012-13 2013-14 2014-15 2015-16 2016-17 2017-18 2018-19 2019-20 Y11-Y20
2009-10
Total
Project
Life Total
0 0 250,000 0 0 0 0 0 0 0 0 0
0 250,000
0 0 0 0 0 0 0 0 0 0 0 0
0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0
Mountain View/Hetch-Hetchy Intertie 900252