HomeMy WebLinkAbout07/18/1989, 2 - 1989-90 ANNUAL WATER OPERATIONAL PLAN Uy �, O� San �U,� OU,��O MEETWG DATE:
Warms Jul 18 1989
COUNCIL AGENDA REPORTR ECMveff-
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FROM: JUL1 4P9
William T. Hetland Allen Short
Utilities Director Water Division Manager
SAN 99MV00F,*lead F on
SUBJECT: Respond by:
1989-90 Annual Water Operational Plan M QD001
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CAO RECOMMENDATION: Any.
Receive and file report. Provide direction to staff as necessary.
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Summary
The City is finishing up its third dry year with minimal rainfall and reservoir
inflows. It is also continuing to develop additional water resources, and a brief
status report on each of the projects is provided. The water conservation program has
been very effective, which has resulted in a reduction in water use of 35% to 40%
since its inception. Public relations aspects and additional incentive programs are
being pursued. The Annual Water Operational Plan each year projects reservoir storage
to make sure that the City is able to adequately meet its water commitments. This
year the curve has been adjusted to use last year's historical Inflow data and to
include groundwater development. The curve shows that the City does not have to go to
50% mandatory water conservation, and that even at 20% conservation there is adequate
water to sustain us beyond the end of the six year dry cycle.
I. Introduction
In 1985 the City Council adopted the Annual Water Operational Plan Policy Statement.
This established a procedure to monitor the City's water supply situation and implement
certain programs at specific action levels as City reservoir levels diminished.
The Annual Water Operational Plan looks at the current reservoir storage situation,
projects future storage based on a worse case scenario, and then evaluates supply and
demand management options. The end result is a reservoir storage curve showing the
estimated reservoir levels during the City's worst case historical dry cycle of six years.
11. Existing Water Supply Status
As of July 1, 1989 the Salinas Reservoir had 4742.3 acre feet of water in storage. This
represents 20.4% of the reservoir capacity. The Whale Rock Reservoir has 22,383.8 acre
feet of water in storage•which represents 55.1% of the reservoir's capacity. The City's
share of its storage at Whale Rock is 50.6% or 11330.7 acre feet. Together the two
reservoirs provide the City with a total storage amount of 16,073.0 acre feet of water,
which is 35.2% of the City's total storage capacity. Exhibit A and B show the change in
lake elevation at each of the reservoirs over the past four years. This correlates
directly to storage capacity.
During the last year the City has been developing groundwater wells to supplement the
City's surface water supplies. We currently have two domestic wells operational. They
are producing approximately 43 acre feet per month. Exhibit C shows the monthly
production for the wells since they have been operational. One irrigation well at Laguna
Lake Golf Course is operational and has produced 8.5 acre feet of water. This represents
about 50% of the golf course's total irrigation needs. In addition, a construction well
at the City's Corporation Yard has produced 4.6 acre feet of water.
�� city of San-Luis osispo
COUNCIL AGENDA REPORT
Page 2
Ill. Water Supply Development Projects
The City is looking at the development of both long-term and short-term water supply
projects. The following is a brief status report of those projects currently under
development.
Salinas Reservoir Expansion
The feasibility study for this project is approximately 85% complete. The geotechnical,
siemic and dam stability portions have been completed. This analysis shows that an
earthquake fault located within one mile of the dam is now considered active. Prior
studies had felt that this fault was not active. This results in higher ground
accelerations at the dam site which means larger forces on the dam during an earthquake.
The consultant feels that these higher forces are not significant but that additional
testing of the dam concrete strength is necessary to verify this conclusion. The State
Division of Dam Safety and the Army Corps of Engineers have concurred informally with this
recommendation.
Analysis on the probable maximium flood (PMF) that the dam may experience has also shown
the value to be higher than previoulsy determined. This is because of changes in how the
PFM is now calculated. This will most likely require some additional downstream
protection of the dam foundation. The consultant is reviewing this further and at this
time does not see this as a major obstacle to the feasibility of the project.
The environmental analysis and yield studies will be underway next week. A draft report
will be completed in September..
Coastal Streams Diversion Project
This past winter the inadequate rainfall did not produce enough runoff for the biologist
to do a complete fisheries analysis. That portion will have to be completed next year if
and when adequate rainfall is received. The institutional arrangements are currently
being performed. Staff from the Whale Rock Commission and City of Morro Bay will be
reviewing that information shortly before a preliminary document is developed for
distribution some time in October.
State Water Project
The State Department of Water Resources is currently doing the environmental analysis
and predesign on the coastal branch of the State Water Project. The draft Environmental
Impact Report is scheduled to be completed in November. It will be distributed and public
hearings will be held over the next year, with completion of the final document scheduled
for November of 1990.
San Bernardo Dam Project
I
The City of Morro Bay has informally requested the City to participate in their proposed
San Bernardo Dam Project. Staff has met with the Morro Bay staff and their consultant to
discuss the feasibility of this project. Additional information was requested of the
consultant before the City staff felt that a firm recommendation could be made. The Morro
Bay staff will provide the additional information and a formal request for participation
it city of San LUIS OBISpo
COUNCIL AGENDA REPORT
Page 3
Desalinization
The City was approached by a firm that was proposing to develop a desalinization plant
in Morro Bay. The project would furnish water to both the City of San Luis Obispo and
Morro Bay at a cost in the neighborhood of $1500 to $1800 per acre feet. Staff met a
couple of times with these people to review this concept. The firm was to finalize some
of their numbers and return them to the City with a formal proposal. To date they have
not been returned, but they have submitted a separate proposal to the City of Morro Bay.
Groundwater Wells
The groundwater development program first involved the identification of potential well
sites for development. Once the well sites are identified they are then drilled, cased,
gravel packed, air lifted and pump tested for volume. Additionally, the well is sampled
to determine water quality and compliance with the State of California Health Service's
maximum contaminant levels. If the water quality analysis meets or exceeds the State of
California maximum contaminant levels, the well pump is properly sized and installed.
A summary of what the groundwater program has accomplished to date is listed below.
Number of wells drilled 10
Number of sites augured 10
Number of wells sampled 14
Number of wells operational 4
Exhibit D shows the location of the different well development sites throughout the City.
The four wells that are operational and their yields are listed below.
GPM AFY
Pacific Beach # 1 Domestic use 165 266
Fire Station # 4 Domestic use 80 134
Golf Course Irrigation use 80 134
Corp Yard Construction use 150 242
Three additional wells will be on line by the end of September. They are:
GPM AFY
Dalidio Domestic use 500 807
Auto Parkway Domestic use 700 1129
Police Range Domestic use 80 134
By the end of September 2470 Acre feet per year of well water will be operational.
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Page 4
Water quality tests have shown that eight wells do not meet State Water Quality
Regulations. Those wells are:
Laguna Lake Golf Course
Auto Parkway
Dalidio
McBrides (Border Patrol)
Madonna Well #1
Fire Station #1
Mission Street Tot.Lot
Corporation Yard
Those wells which are not in compliance with the State of California Water Quality
Regulations will require some form of treatment prior to domestic consumption. Water
quality analyses have revealed the following constiuents in violation of the State
Regulations:
Iron and manganese.
Arsenic
Nitrates
PCE
TCE
It is estimated that treatment costs to remove the constituents listed above will range
from $100,000 to $250,000 depending on the well capacity and the amount of the
contaminant. In addition to the hardware requirements, manpower and ongoing chemical
testing requirements will also increase to ensure system reliability. It is anticipated
that the City will have on-line approximately 3350 acre feet by the end of October, 1989.
This represents approximately 43 percent of the water demand which has historically been
supplied by the existing surface water reservoirs.
IV. Water Conservation
Since the implementation of the mandatory water conservation program in April, the
City's water consumption has been reduced by approximately 35% to 40%. Exhibit E shows
the weekly reduction in water use over the same time frame in 1987, the base year for our
program. This is a very pleasant response since the City's initial goal was only a 20%
overall reduction in water use. Attachment 1 is a summary by Bill Statler, City Finance
Director, of the first billing cycle which includes the mandatory water conservation
regulations. This provides a good insight on which customers are conserving and which
customers are paying penalties.
Hotline
The Water Conservation Program which was approved by the City Council on April 5, 1989, is
fully functional and operational. The first phase of the program was to hire, train and
properly equip those individuals whose responsibility it would be to respond to public
comments, questions and concerns. These individuals have been identified as "hotline"
personnel.
C11y Of San LUIS OBISpO
COUNCIL AGENDA REPORT
Page 5
Their primary function is to answer all questions and provide information concerning the
water conservation and adjustment allocation programs. In addition, they must be well
versed in all aspects of the conservation program, billing cycles, industry terminology
and the allocation procedure and process.
From May 6, 1989 to date, the Hotline personnel have answered 8216 calls, and have sent
out 1917 allocation adjustment form requests and have received 1038. The largest number
of phone calls occurred after the target allocation letter had been sent out to each
customer. The single largest number of phone calls occurred on May 18, 1989: a total
number of 551 calls were logged that day.
Drought Patrol
The second phase of the program is the enforcement of the Water Conservation Ordinance.
This phase of the program over the past three years has been accomplished through the use
of a drought patrol. The drought patrol is actually in the field patroling the
community. The drought patrol's primary purpose is to educate customers to the importance
of water conservation and enforce the City's Water Conservation Ordinance and Municipal
Codes.
The drought patrol was officially on the road Wednesday, May 24, 1989. As of this writing
they have handed out approximately 60 warnings to those who are in violation of the Water
Conservation Ordinance and Municipal Codes. There have been no formal citations or fines
levied as a result of visible water waste.
Public Relations and Public Information Plan.
To implement an effective Water Conservation Program requires the public to be thoroughly
informed. Staff has been in the process of developing communication strategies and a long
term approach to addressing and informing the public. During the initial stages of the
program the Water Conservation Staff produced a pamphlet on the mandatory water
conservation program, "Every Drop Counts". The pamphlet was mass distributed to
approximately 28,000 mail boxes, business and Post. Office boxes within the City.
In addition, prior to each informational release, press releases are generated and
distributed to both T.V. and radio media. These include:
o The "Every Drop Counts" pamphlet.
o Introduction to the drought patrol.
o Water Allocation notices.
o Program success.
I
' 1 CMY Of SM LUIS OBISPO
COUNCIL AGENDA REPORT
Page 6
Staff has also been available and involved in presentations to community and business
groups. Staff has also written articles for various newsletters, Chamber of Commerce,
BIA, and the City's employee newsletter. The Staff has established an informational booth
at farmer's market on a bimonthly basis to pass out information, answer questions and
explain the goals and objectives of the Water Conservation Program.
Staff has been actively involved in the writing and production of public service
announcements which are approximately 30 seconds in length and which were distributed to
all of the County radio stations. Additionally, staff has developed a positive proacitive "
paid advertising campaign. This includes the following:
o Radio advertising -- Water Conservation jungle "cool water".
o Print advertising -- Ads have been developed and placed in the Cal Poly Mustang
Daily and soon will appear in the Telegram Tribune.
o Development of television commercials and storyboard. Actual production date has
been delayed and the project held in reserve, pending water conservation trends.
o A list of conservation materials and books for the
reference section of the library.
o Conservation tips room tents for hotel and motel use.
Finally, staff is in the process of developing a program to recognizing those individuals
or business who demonstrate significant water savings. To recognize those individuals
residents, staff has designed and ordered a special T shirt in titled "Drought Busters".
In addition, staff is investigating the use of the telegram tribune, certificates, and
council recognition. Staff is also investigation and developing concepts for the
development of plaque and certificates to recognize those in the business community.
Development and implementation of a public relations and Informational Plan is an ongoing
process which is constantly being reviewed, modified and improved to ensure that target
audiences are met and program goals and objectives are properly conveyed.
V. Projected Water Supply Situation
The basis for projecting the City's water supply situation is the development of the
reservoir storage curve. The curve is developed by starting with the current amount of
water in storage at the two reservoirs. The future levels are projected taking into
account the consumption, conservation, reservoir inflow, evaporation and the use of
alternate water supplies like wells.
Four wells representing approximately 400 acre feet per year are currently on line. It is
estimated that over the summer additional wells will become operational as they are
completed and the treatment units installed. Exhibit F shows the projected groundwater
amount and the months it will be operational. By the end of October there will be
operational 3340 acre feet per year of well water. These amounts are reflected in the
reservoir storage curve. Additional well water could be developed if necessary.
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Consumption and conservation for the curve was estimated using two assumptions. The first
was a 20% reduction is normal consumption with no allowance for growth. The 20% is the
City's current goal for its mandatory water conservation program. The second curve is
based on a 40% reduction in water consumption with no allowance for growth. The 40%
reflects the actual reduction in consumption that the City has experienced since the
mandatory water conservation program was adopted in April.
Reservoir inflow values are based on the historical 1988-89 amounts. This is a more
conservation approach since these values are less than the previously used average inflow
for the worst case six year dry cycle. Evaporation losses were caluculated based on the
historical evaporation data.
All this data was then inputted on a Lotus spreadsheet for each month for five years and
then plotted. Exhibit G shows the resulting reservoir storage curve for City.
There are a number of key points on the reservoir storage curve that need to be
highlighted. The first is that under the 20% conservation assumption there is adequate
water in the reservoirs, plus groundwater, to last the City until the beginning of 1994
before the Reservoir reaches the minimuim pools. This is well beyond the projected end of
the six year dry cycle that the City uses for water planning purposes. At a conservation
level of 40%, the level the City is currently maintaining, the reservoirs still have over
9000 acre feet of storage left by early 1994.
These curves demonstrate that with groundwater and the current reservoir storage the City
can meet its water commitments beyond the end of the City's worst case six year dry
cycle. It further shows that as long as the conservation level is maintain in the 20% to
40% level there is no need to establish more restrictive levels of mandatory water
conservation.
VI. Recommendation
Staff recommends that Council receive and file this report.
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Attachment $1
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July 10, 1989
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TO: Distribution
FROM: William C. Statler, Director of Financcwill�
SUBJECT: WATER USE
Attached for your use and information are the summary results of the first billing since
the adoption of the Mandatory-Water Conservation Program (April 5, 1989) that includes
target allocations and any related surcharges. The following is a summary of key
statistics:
• 3,996 accounts are included with this billing, representing approximately 32% of
all the City's customers. These accounts are primarily located in the Foothill,
Cal Poly, and Laguna Lake areas. Consumption periods range from April 10 to
June 5 through April 24 to June 22.
• For these customers, an overall reduction of 18% would have met conservation
goals for this period; actual water usage declined by 39%.
• Residential customers accounted for 80% of the decrease.
a 549 customers tentatively have incurred surcharges of 100% to 200% as summarized
below. However, it is anticipated that many of these customers will be eligible
for adiustments based on factors used in granting adjustments to other
customers.
Total With Surcharges Surcharge
Accounts 100% Level 200% Level Revenues
Residential
Single Family Detached 3,161 137 260 S 34,858
Other 577 27 48 13,278
Other Customers 258 23 54 26.514
Total 3.996 187 362 $74,650
If you have any questions concerning the attached summaries, or require additional
information, please do not hesitate to contact me.
Distribution:
John Dunn
Bill Hctland
Allen Short
Tina Metsger
Bernie Ries
Dixon Flynn
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