HomeMy WebLinkAbout2005-0202 Study Session Packet
CITY OF
ASHLAND
CITY COUNCIL STUDY SESSION
AGENDA
Wednesday, February 2, 2005 at 12:00 p.m.
Council Chambers, 1175 East Main Street
1. Talent Ashland Phoenix (TAP) Intertie Pipeline Update on Preliminary Engineering
and Future Water Line Construction from Talent to Ashland.
In compliance with the Americans with Disabilities Act, if you need special assistance to participate in
this meeting, please contact the City Administrator's office at (541) 488-6002 (TTY phone number
1-800-735-2900). Notification 72 hours prior to the meeting will enable the City to make reasonable
arrangements to ensure accessibility to the meeting (28 CFR 35.102-35.104 ADA Title 1).
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CITY OF
ASHLAND
Council Communication
Study Session
Talent Ashland Phoenix (TAP) Intertie Pipeline Update on Preliminary
Engineering and Future Water Line Construction from Talent to Ashland
Meeting Date:
Department:
Contributing Departments:
Approval:
February 2,2005
Public Works ~
Community Dev ment
Gino Grimaldi
Primary Staff Contact: Paula Brown, 552-2411<flr
brownp@ashland.or.us jr
Secondary Staff Contact: John McLaughlin,
552-2043; mac@ashland.or.u~
Statement:
This item provides an update on the preliminary engineering for the TAP (Talent Ashland Phoenix
water intertie) pipeline project. This information is being presented to Council at a study session in a
workshop format to discuss staff recommendations for the TAP reservoir placement and system
integration to meet the future water needs for the City of Ashland. Consistent with past updates, this
item also provides updated background information on the City's water supply, water demand, water
rights, and conservation.
Background:
Water has been, and will continue to be, a concern for the Rogue Valley. The City of Ashland will
have intermittent drought years followed by periods of sufficient water for the foreseeable planning
period. However, as we look at reasonable projections for growth, water use and successful
conservation programs, staff is concerned that we ensure timely planning and construction of the
TAP project to guarantee adequate water supply for successive drought years or for emergency
situations. Although the water need is not until 2016, staff is recommending that the City continue to
plan for and develop a funding mechanism so that construction of the TAP Pipeline, ancillary
improvements and connections to the City's distribution system can be completed by July 2010.
Based on the Council's decision in December 1998, the City participated with the cities of Talent and
Phoenix and with the Medford Water Commission for the design and construction of the 24-inch
TAP water pipeline construction to the City of Talent. In addition to the initial construction, Council
has asked staff to complete the following:
1. Complete pre-design for the future extension of the TAP Pipeline
2. Continue with an emphasis on conservation programs in an effort to meet the goals for 20%
peak day summer time reductions
3. Continue with negotiations for other water supply opt~ons including:
. Purchase Lost Creek Water Rights
. Review the options of exchanging the City's Talent Irrigation District (TID) water rights
from the City's "Imperatrice Property" for beneficial use within the City
. Begin discussions with TID and BOR for additional municipal water rights
I
Although the primary purpose of this Council study session is to discuss the TAP pre-design and
system improvements, the attached document discusses the remaining elements of the Council's
goals.
Costs: The following summarizes the anticipated costs of the project:
TAP Pipeline Construction Medford to Talent (2002)
Purchase Water Rights (2002)
Engineering
Preliminary (2004)
Final
Future Connection of TAP from Talent to Ashland (incl engr)
Future SDCs to Medford Water Commission (assumed)
Paid Future Costs
$1,450,000
931,000
75,000
$350,000
2,000,000
1,500,000
750,000
1,000,000
400.000
$8,456,000
2,456,000
$6,000,000
Future Ashland Pump Station
Future Ashland Distribution System Upgrades
Additional Lost Creek Water (increased costs)
TOTAL Costs:
Paid to date:
Total Future Costs:
These costs could be funded through a combination of funding sources including
Water Supply SDCs approximately 75% ofT AP Pipeline,
& 100% of the purchased water rights
Water Distribution SDCs approximately 75% of the dist upgrades
Water Rates approximately
Bonds, loans or other initial funding may be required to cover the collection of SDCs.
$3,287,500
1,312,500
1,400,000
Related City Policies
2004-2005 Council Goals
Budget
Council Options:
Although this does not require current council decisions, there are a few future decision points that
will be brought to Council. Staff will continue with the schedule as outlined below with the first
TAP action being the land siting and purchase for the receiving reservoir. The next formal Council
decision for the TAP project is the timing for final design, which will be brought to Council in the
2007, separately and during the budget process.
As shown below in the staff recommendation section, staff continues to push for an earlier than
absolutely necessary design and construction schedule. This is a conservative approach from staff to
allow some additional time for unforeseen issues, design complications and potential severe drought
situations that would allow some flexibility in an otherwise very stringent curtailment program.
However, those specific decision points will be brought back to council with that recommendation
and an actual date for the timing of those steps. Other than these precautionary moves, there is no
absolute reason to engage in the earlier design from a water supply standpoint. The date provided in
the 1988 water study is valid. Water conservation remains a viable option for gaining 10%
reductions (see the attachment) in maximum water use, and has been progressing well. Staff is
cc TAP Future 2Feb05
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committed to aggressively pursue education for wise irrigation efforts to reduce summer water use,
and also explore better use of TID water for irrigation needs to enhance the conservation
achievements.
Staff Recommendation:
Staff recommends continuing to pursue the TAP project as shown on the following schedule. As
mentioned above, the next TAP action is to identify and site the receiving reservoir for the TAP
pipeline, which is schedule to be completed between April 2005 and January 2006.
There is a related but separate issue that will need to be resolved for better water distribution of our
current system and will help once the TAP pipeline is in place; that is the Zone 5 reservoir for better
system distribution and to meet deficits in current distribution and fire flow demands. This reservoir
is already in the budget for funding and will continue to be designed and constructed in the FY06
through FY07 budget process.
TAP Pre-Design
TAP Reservoir Siting/Land
TAP Final Design
TAP Pipeline/System
Construction
Zone 5 Reservoir Design
Zone 5 Reservoir Construction
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Potential Motions: None - study session
Attachments: Additional TAP and Water Program Background
CC TAP Future 2Feb05
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Additional TAP and Water Program Background:
The following information has been provide in the past, but has been updated as of January 2005.
Review of the Water Master Plan Assumptions and Recommendations
Carollo Engineers was hired in July 1998 to assist the City in developing a long-term comprehensive
water supply study. While the City has an adequate water supply during non-drought years, the
construction of the TAP Intertie pipeline from Medford to Talent required Ashland's decision to
participate in the construction in 2001. The Master Plan looked at the City's supply and demand for
water through the year 2050 (Carollo - Technical Memorandum # 1). The report indicates that as Reeder
Reservoir is significantly undersized, the City does not have adequate water supply during severe drought
conditions. The water supply deficit reaches 450 million gallons in the design year of 2050. Aggressive
summer conservation could theoretically achieve a 20% reduction, however, the recommendation is that
the City implement a voluntary curtailment program that targets a 10% reduction during the high
use summer months - every year. Mandatory curtailment would be used to achieve the additional 10%
(total 20%) reductions during severe drought conditions.
The Comprehensive Master Plan evaluated and discussed several different options. The TAP pipeline
was the only "stand-alone" alternative that could supply the City with the necessaty 450 million gallon
deficit that is projected (technical memorandum #2). Carollo summarized the findings and
recommendations in Technical Memorandum #3. These recommendations were the basis of Council's
decision in December 1998 to cooperate in the construction of the TAP Pipeline and evaluate other water
supply needs.
The timing of the construction of the TAP Pipeline to Ashland and overcoming even short-term deficits
are highly dependent upon drought conditions. The reports suggest that with ((...aggressive summer
conservation, the City can theoretically reduce the overall/water supply) deficit through the year 2020.
((However, demand reduction conservation would need to be achieved every year during the highest
demand months to adequately protect against unanticipated drought. Demand reduction by summer
conservation alone is therefore not considered a suitable planning strategy for deficit reduction." The
amount of projected deficit is a strong function of projected population growth and other factors including
drought conditions. The year 2016 has been used as a planning target for overcoming the additional
growth related deficit and completion of the TAP Pipeline to Ashland.
Construction of the TAP Intertie Pipeline to Talent
The TAP Intertie Project includes a 24-inch pipeline from Medford to Talent. The cities of Talent,
Ashland and Phoenix, hired Montgomery Watson (MW - now Montgomery Watson Harza - MWH)
Engineering to complete the final engineering design and also to provide construction management
services during the construction of the TAP Intertie pipeline. The Rogue Valley Council of Governments
(RVCOG) assisted in contract oversight during construction and will continue to act as the coordinator.for
the three cities during the operation of the pipeline.
Construction is complete and includes the pipeline along Hwy 99, a Regional Pump Station at Belknap
Road and Hwy 99, and the system telemetry links with the City of Medford, Talent and Phoenix (and
eventually will include Ashland). Both Talent and Phoenix have has ancillary water system improvements
designed and constructed as a part of their funding through a combination grant and roan program through
the Rural Development that are not specifically part of the TAP Intertie costs.
Construction Costs: The engineer's estimate for the construction work was $10,660,060. James W.
Fowler's final construction costs were $9,260,255. The City of Ashland participated in only three
portions of the project including the project mobilization, the 24" diameter pipeline from Medford to
Talent, and the Regional Pump Station. The total construction estimate for those portions was $5,410,243
and the flow-based portion for Ashland is 19.39% or $1,049,046. The City of Ashland participated in 5
of the 13 change orders (the other 8 were specific to Talent or Phoenix), which increased the total cost to
$5,442,636, with Ashland's portion totaling $1,058,256. The Capital Improvements Budget allowed for
$1,245,000 for the TAP construction and engineering / construction management costs.
CC TAP Future 2Feb05 4 -~ W
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Non-Construction Costs to Date: Ashland has participated in the MWH design, construction
management, and bidding services at an authorized contract cost of$137,737. RVCOG administrative
oversight and management services are authorized to a total of $30,000. The Regional pump station land
acquisition cost $12,000. The total Ashland participation estimate of these non-construction or land
acquisition costs is just under $180,000. The annual costs for RVCOG are expected to be less than
$5,000 for Ashland's portion.
Lost Creek Water Ri!!hts
Based upon Carollo Engineer's evaluation for the Comprehensive Water Master Plan, the total annual
deficit during a drought year for the planning horizon of the year 2050, with recommended aggressive
conservation and curtailment in drought year, and with some reallocation of water rights, is 430 million
gallons (Technical Memorandum #1). Carollo recommended obtaining 450 million gallons (or 1380 acre-
feet) of water from Lost Creek Lake at a cost of $674 per acre/foot or a total of $931 ,000. The City
formally initiated the process and purchased water rights for a total of $931 ,000 in June 2001.
Subsequent to that authorization, the Corps of Engineers has discovered an error in their interest
calculations so that the amount of water the City purchased is significantly less than anticipated. For the
$931,000, the City has purchased approximately 920 acre feet of water. The difference in needed water
rights has been budgeted for FY09 purchase.
TID Water Ri!!hts Reallocation - "Imperatrice Propertv"
During the water master planning efforts, there was a proposal to look at the City's water rights on the
newly purchased Imperatrice Property. The City was able to shift a portion of these water rights to other
City use late in the summer of2001 to help offset the City's need for additional allocation for TID
supplemented drinking water. This was a one-time allocation.
At one time, there was discussion by the Council to explore the possibility of providing "leased" water for
in-stream beneficial use to replace a portion of the wastewater treatment plant effluent. The ability to
lease the water for in-stream use to meet a targeted flow is possible, but may not be possible after the end
of irrigation season when the creek flows are the lowest. This issue was discussed with TID and the State
Water Master without much possibility of success and would most likely require the Federal Bureau of
Reclamation (USBOR) approval. This option will continue to be discussed as staff researches solutions to
the wastewater temperature concerns.
Water Supplv and Demand
Reeder Reservoir is relatively small as the maximum storage behind the dam is 860 acre-feet or 280
million gallons of raw water with the overflow weirs in place. Reeder Reservoir is fed from snow melt
and watershed rain runoff from Mount Ashland. Typically, the reservoir fills to the top and reaches
capacity in April, stays full and spills over the overflow weirs at the dam through to the end of May, and
then the water level behind the dam slowly starts to fall until the rains begin again usually sometime in
October. Theoretical drawdown of the reservoir begins the first of June and goes to "empty" in March.
The reservoir never reaches "empty" because of rains that usually start in October. The predicted 50%
reservoir level is October 15th. Anytime after October 15th without rains and with the reservoir at or
below 500/0 would cause concern for water supply.
Water use in the summer months is highly dependant upon weather conditions; the warmer the weather,
the higher the use. When the late spring / early summer temperatures are in the 70s, the averaging use is
4-4.5 million gallons a day (mgd). With temperatures in the 80s, water use reaches 5-5.5 mgd, and with
temperatures in the 90s, average water use is 6-6.5 mgd. Peak temperatures result in peak water use of
about 7.5 mgd. We have had days in prior years with use as high as 8 mgd. The 2001 drought year
showed that our community was willing to monitor their use. During the voluntary conservation periods,
the average use in August dropped to 5.3 mgd. During September, the month of mandatory curtailment,
the average use dropped to 4.1 mgd. As soon as temperatures cooled off in mid October, the average use
dropped to 2.0-2.4 and stayed in that range.
CC TAP Future 2Feb05
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Water Use Comparison
July 2000, 01, 02, 03, 04
Year 2004
avg 6.05
peak 6.8
2003
6.29
7.1
2002
5.87
6.6
2001 2000
5.58 6.13
6.2 7.4
8.0
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6.0
2003 high su:~ained peak ternfs
2000 hJ~h sustained peak use
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2002 rain periods; lower use
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2001 drought conditions
2004 pretty average
(solid line)
3.0
- 2004 use - - 2003 use - - 2002 use - - 2001 use - - - 2000 use
,2.0
-~~.~~~~~~~~~~~~~~~~~~~~~~~~~~~
date
Conservation Pro!!rams to meet the Goals for 20% Peak Dav Summer Time Reductions
The Comprehensive Water Master Plan adopted by the Council recommended continued efforts to
achieving conservation goals. The water deficit numbers used in planning for the water need in the future
depended upon achieving a 20% reduction in water use in the summer. With the drought conditions the
summer of 200 1, the City felt the impact of mandated water curtailment and the initial impacts of a
significant water conservation program. There were many complaints and concerns and the City achieved
only a 10.5% reduction during the summer months.
Since then, water use continues to be lower than those numbers experienced in 2000. Peak water use has
only been above 7 mgd on two occasions since 2000, and averages in July are down to 6.25 mgd or less
during the hottest month (July). Our maximum day in the year 2000 was 7.3 mgd, with figures of 6.4 mgd
in 2001,6.6 mgd in 2002, pegged at 7.1 mgd in 2003 (after 4 days of over 1000F temperatures), and 6.8
mgd in 2004. This quick result averages a maximum day of6.72, demonstrating 8.6% reduction just on
maximum day values. A 20% conservation program is extremely aggressive and is likely not attainable
without additional curtailment measures. Staff will continue to aggressively pursue education for wise
irrigation efforts to reduce summer water use, and also explore better use of TID water for irrigation needs.
cc TAP Future 2Feb05
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TID Suoolement: The City has an alternate water source to draw upon through an agreement for 769
acre-feet of perpetual domestic water rights from the Talent Irrigation District (TID). During drought
years or less than average water years, the City will use TID to augment water storage in Reeder
Reservoir.
Discussions with TID re!!:ardin!!: the City of Talent Municioal Water Ri!!:hts
The City of Talent relinquished their 300 acre-feet of stored water rights within the TID system and
suggested that Ashland pursue those rights. Staff has made contact with personnel at the Bureau of
Reclamation for an option on those rights and will also discuss this option with Oregon's Water Rights
personnel. As the City has lost the rights to prior 1966 TID water, this might be an option to regain a good
portion of those M&I rights. The discussion now is with the cost of that water. Staff is close to a solution
and will try to solidify the agreement for the FY05 water year.
Rene!!:otiatin!!: the 1966 TID Water Use A!!:reement
Staff has had no success with this agreement and expect that discussions will not continue as the basin has
been over allocated. With the Klamath Tribes now formally challenging the water diversions, it seems
even more unlikely that the City will be successful in re-negotiating these 1966 agreements and rights. It
may be more prudent to drop these discussions if the 300 acre-feet of Talent's relinquished water rights
can be secured and ask that the Bureau look at stream flow augmentation.
CC TAP Future 2Feb05
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Status of TAP Project
· Overview
· To-Date
- Model Updated
- Reservoir Analysis/Alternatives
- Permitting Requirements
· What's Next
- Pipeline Alignment & Pump Station Siting
- Surveying, Geotechnical, Environmental
Review
Ash1204i1-6891.ppI/3
Reservoir Storage Analysis
· Existing Condition (2004)
- Maximum Day Demand of 7.5 mgd
- Overall System Deficit of 0.65 MG
· Future Condition (-2050)
- Maximum Day Demand of 10 mgd
- Overall System Deficit of 2.52 MG
Ashl204iI-M91.ppI/4
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Reservoir Storage Analysis
Existing Condition - MDD of 7.5 mgd
Total
Service Max Day Existing Storage Storage Surplus
Reservoir Zone Demand Storage Required Deficit Storage
(mgd) (MG) (MG) (MG) (MG)
Alsing 4 0.35 2.1 0.44 1.66
Crowson 2,3,5 3.64 2.2 3.69 1.49
Granite 1,6,7 3.47 2.1 3.56 1.46
. Strawberry 8 0.04 0.5 0.21 0.29
System Wide All 7.5 6.9 7.55 0.65
"""I~'-6891.ppt /5
Reservoir Storage Analysis
Existing Condition - MDD of 7.5 mgd
2
Reservoir Storage Analysis
Future Condition - MDD of 10 mgd
Total
Service Max Day Existing Storage Storage Surplus
Reservoir Zone Demand Storage Required Deficit Storage
(mgd) (MG) (MG) (MG) (MG)
Alsing 4 0.37 2.1 0.46 1.64
Crowson 2,3,5 4.92 2.2 4.65 2.45
Granite 1,6,7 4.66 2.1 4.46 2.36
Strawberry 8 0.05 0.5 0.22 0.28
System Wide All 10 6.9 9.42 2.52
Ash1204i1-a191.ppt /7
Reservoir Storage Analysis
Future Condition - MDD of 10 mgd
3
Recommendation for Additional
Reservoir Storage
1. New 2.5 MG TAP Reservoir to
Service Zone 1 & 7
2. Reconfigure System for
Strawberry Reservoir to Service
Zone', 6
3. Additional 0.75 MG Reservoir to
Service Zone 5
4. Utilize Alsing Reservoir by
Ash1~I-eeglpp/g increasing size of Service Zone 2
Reservoir Storage Recommendation
4
TAP Reservoir Alternatives
1 . Alternative No.1 - Ashland
Mine Road, Elevation 1 ,970'
2. Alternative No.2 - Grandview
Drive, Elevation 2,160'
AshI2O<141-6891.1>I'I/11
TAP Reservoir Alternatives
Alternative No.1 - Ashland Mine Road,
Elevation 1 ,970'
Considerations:
· Less capital & operational costs ($14.9 million)
· Requires Isolation of Zone 1 & lower elevations of
Zone 7
· Supply TAP Reservoir with City water, effectively
mixing 2 sources
AshI2O<141__1.1>I'I/12
5
.
TAP Reservoir Alternatives
Alternative NO.2 - Grandview Drive,
Elevation 2,160'
Considerations:
· I ncreased capital & operational costs ($17.9
million)
· Service both Pressure Zones 1 & 7
· Allow for either reservoir to be temporarily out of
service for maintenance and/or repair
"'''''I~I-e891.ppt/13
TAP Reservoir Alternatives
Reservoir Service Base Elevation Pump Pipe
Alternative Zone Elevation Ditt. Size Length
(feet) (feet) (hp) (feet)
Alt. No.1 1 & lower 7 1,97() 405 235 23 - 24,000
Alt. No. 2 All of 1 & 7 2,160 595 335 26,000
Pump Station Costs
Reservoir Reservoir Operational Pipe
Alternative Cost Capital Cost
($ millions) ($ millions) ($ millions) ($ millions)
Alt. No. 1 $ 2.3 + $1.75 $ 5.68 $ 5.04 - $5.22
Alt. No. 2 $ 2.3 + 0.25 $1.75 $ 8.10 $ 5.71
Alh1~1-e891.ppt /14
6
Water Rights
· City will have a 450 MG water supply deficit in 2050
· Medford Water Commission is fed by Lost Creek Lake
· City endorsed the TAP decision and upsized the line
· City purchased 1000 Acre-Feet (325 MG) of stored
water in Lost Creek Lake
· City still needs to gain a "water right" to use the ~ater
· Staff has delayed the water right application pending
the results of litigation that challenges the need for
beneficial use within 5 years of gaining a permit
· City intends to purchase the remaining 125 MG (384
acre-feet) of water rights in FY09
AshI2O<4iI-6891.ppI II 5
Scheduling TAP Improvements
· TAP Pre-Design; complete March 'OS
· TAP Reservoir Siting & Land Purchase; July 'OS - Jan. '06
· TAP Final Design; April '08 - April '09
· TAP Pipeline & System Construction July '09 - July 110
· Zone 5 Reservoir: Design, July 'OS - Dec. 'OS
Construction, July 106 - May 107
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Water Use Comparison
July 2000, 01, 02, 03, 04
Year 2004
Ave. 6.05
Max. 6.8
2003 2002 2001 2000
6.29 5.87 5.58 6.13
7.1 6.6 6.2 7.4
2000 high sustained peak use
3.0
- 2004 use
- 2003 use - 2002 use
- 2001 use - 2000 use
2.0
1 2 3 4 5 6 7 1 9 10 11 12 13 14 15 16 17 11 19 20 21 22 23 24 25 26 27 21 29 30 31
date
AlI1t~1.6891.ppt/17
Q&A
AII11~1-M91.ppt/18
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