HomeMy WebLinkAboutMemo - Mail Packet - 11/10/2020 - Memorandum From Eileen Dornfest Re: Halligan Water Supply Project Status Update: Third Quarter, 2020
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700 Wood Street
PO Box 580
Fort Collins, CO 80522
970.212.2900
V/TDD 711
utilities@fcgov.com
fcgov.com/utilities
M E M O R A N D U M
DATE: November 3, 2020
TO: Mayor Troxell and Councilmembers
FROM: Eileen Dornfest, Special Projects Manager
THROUGH: Darin Atteberry, City Manager
Theresa Connor, Interim Utilities Executive Director
Liesel Hans, Interim Deputy Director – Water Resources and Treatment
Operations
RE: Halligan Water Supply Project Status Update: Third Quarter, 2020
Bottom Line
Please find attached a quarterly Status Update on the Halligan Water Supply Project. This report
provides a summary of work in progress and recent accomplishments.
CC: Water Board
DocuSign Envelope ID: 7861A14D-BCF8-466B-A09D-C4EC41F703EE
HALLIGAN WATER
SUPPLY PROJECTUPDATE
BACKGROUND
The Halligan Water Supply Project would
enlarge Halligan Reservoir, an existing
reservoir on the North Fork of the Poudre
River, to meet the demand of future Fort
Collins Utilities’ water customers and provide
increased reliability for existing customers
in the event of emergencies, drought and
climate-change uncertainties. The project
would expand the reservoir by about 8,100
acre-feet by increasing the height of the
existing 70-foot dam by 25 feet. For context,
an average single-family home uses almost
a third of an acre-foot of water each year
(about 108,000 gallons).
The project reached a milestone in November
2019 after many years of hard work, when
the draft EIS was released. The final EIS
should be released in 2021.
Permits are required from the U.S.
Army Corps of Engineers (Corps) and
other federal, state and county agencies
to enlarge Halligan Reservoir. Staff continue
to support preparation of a final EIS by the
Corps. Additionally, staff are working toward
other permitting processes, including the
Fish and Wildlife Mitigation Plan and the 401
Water Quality Certification.
PROGRESS UPDATE
Permitting and Mitigation
• The Corps is addressing comments on the draft EIS and working
toward preparation of the final EIS, which is anticipated mid-2021.
• Staff are working closely with Colorado Parks and Wildlife to
develop concepts for the Fish and Wildlife Mitigation Plan.
• Work toward the 401 water quality certification continues,
including additional water quality sampling this year.
Public Engagement & Communication
• City staff prepared a short animation in response to
comments received on the draft EIS. Watch at:
fcgov.com/halligan-comments
• Project-specific communications and engagement since January:
Property Acquisition and Easements
• Staff continue to work with several landowners to develop
easement agreements for permitting and design access.
Preliminary Design
• Preliminary design activities are underway. See images below.
November 2020
Drilling to evaluate ground conditions for the enlarged dam Extracting cores to evaluate structural integrity of the 111-year-old dam
477
4,670
459
4
3,609
Website (pageviews)
Social Media (reach)
Events (booth visitors)
Presentations (attendees)
Media (articles/ads)
DocuSign Envelope ID: 7861A14D-BCF8-466B-A09D-C4EC41F703EE
For more information, visit fcgov.com/halligan
Eileen Dornfest, Special Projects Manager • 970-416-4296 • halligan@fcgov.com
Auxiliary aids and services are available for persons with disabilities, V/TDD 711.Esta información puede ser traducida, sin costo para usted, 970-212-2900.Utilities
Figure 1: Cost Range
Figure 2: $ Spent vs. Projected Costs
ANTICIPATED COSTS
Project costs were updated in 2019 pending the
release of the draft EIS and with information
learned over the previous two years. The
estimate is presented as a range due to the
long-term nature of the project, the conceptual
nature of the current design and the uncertainty
associated with a complex water supply project.
As noted in previous quarterly updates, costs
are anticipated to change and likely grow as the
scope is refined and permitting requirements
and design elements are better understood.
Costs will be updated again in 2022 after
preliminary design is complete and more is
known about the project design, permitting and
mitigation elements. Costs will continue to be
updated as new information is obtained.
Updated cost estimates and other decision
factors will be evaluated at project milestones
to verify that the Halligan Project remains the
most cost-effective water supply solution for
Utilities’ customers.
Currently, the Halligan Project is anticipated
to provide firm yield at about $15,000 per
acre-foot and is the most cost-effective project
to meet the City’s water supply needs. For
comparison, the market rate for firm yield
from the Colorado-Big Thompson (CBT)
Project is approximately $60,000. Also, the
Northern Integrated Supply Project (NISP)
and Windy Gap Firming Project unit costs are
currently $30,000 and $20,000 per acre-
foot, respectively.
Figure 3: Regional Water Supply Projects Unit Cost through Time
Windy Gap NISP Halligan
1990 1995 2000 2005 2010 2015 2020 2025
$5K
$10K
$15K
$20K
$25K
$30K
$35K
$0
Moffat Collection
DEIS Released
All permitting & design complete
DEIS in Preparation
FEIS Complete
DEIS Released
All permitting & design complete
DEIS Released
$33,143
$30,000
$20,000
$15,000
2019 costs shown for other projects were published information at that time and may not represent actual 2019 cost estimates.Unit Cost of Water (Per Acre-Foot of Firm Yield)Spent to date: $19.5M Projected future costs Appropriated funds remaining: $17.8M
$120M$100M $150M
Range of Probable Cost
Range of Possible Cost
Cost in Millions0
10
20
30
40
50
60
70
80
MITIGATIONDESIGN & CONSTRUCTIONPUBLIC OUTREACHPROPERTY ACQUISITION PERMITTING
$28M
$5M $1M
$70M
$16M
DocuSign Envelope ID: 7861A14D-BCF8-466B-A09D-C4EC41F703EE