HomeMy WebLinkAboutItem 7.2 StatusDroughtRestrictions CITY OF DUBLIN
AGENDA STATEMENT
City Council Meeting Date: May 13, 1991
SUBJECT: Status Report on Drought Restrictions
(Report by Public Works Director Lee Thompson)
EXHIBITS ATTACHED: 1) Dublin-San Ramon Services District (DSRSD)
Draft Proposal for Recycled Water for the
Dublin Sports Grounds.
2) Copy of exception in Shannon Park deed for
water rights.
3) Memo from Mehran Sepehri, Sr. Civil Engineer,
to Lee Thompson, Director of Public Works,
regarding well at Shannon Park.
RECOMMENDATION: 1) Accept report and authorize Staff to prepare a
i counter proposal to DSRSD' s proposal for use of
//1\17--Air-1 recycled water Dublin Sports Grounds.
2) Authorize Staff to advertise for bids for test
bore, drilling and hook-up of a well at Shannon
Park, if water rights can be obtained.
FINANCIAL STATEMENT: Well cost is estimated to be $50,000 to $60,000.
Funds would be required in the 1991-92 Budget.
It is possible after a test bore (estimated at $10,000
to $15,000) that not enough water would be available,
or that the quality or quantity of water would not be
suitable for irrigating Shannon Park. In this case,
the money expended would be a loss to the City.
If a well is successful at Shannon and it produces for
ten years, there would be a net savings to the City of
approximately $40,000 for irrigation water.
DESCRIPTION: This report is a summary of the drought-related
actions and information collected since the Council's last regular meeting
on April 22, 1991.
A) DSRSD Action
DSRSD Board of Directors, at their regular meeting of May 7, 1991,
discussed the following drought-related items:
1) The Phase 1 voluntary water reductions are working, and if the water
customers continue their reductions at the same rate, the District
will not need to advance to the mandatory rationing phases.
2) The DSRSD Board did honor Dublin's request to eliminate streetsweeping
from their proposal to require the use of recycled water and did
exempt pre-existing grading operations from the use of recycled water,
as well as limited this requirement to just the drought period.
3) The Board discussed a surcharge of $1 per equivalent 5/8 meter to
finance a new well, as well as the study and funding of recycled
water projects (including the proposed Dublin Sports Grounds project) .
This surcharge would cost Dublin $2,754 per year based on Dublin' s
present 229 1/2 equivalent 5/8 meter units.
ITEM NO. 1740 2 COPIES TO: DSRSD Board of Directors
Zone 7
�. /00—8o
4) A previously proposed change in the emergency drought restrictions to
reduce residential allocations and increase the City' s park allocation
for drought phases 2 and 3 was discussed but no change was made,
partly because the item was moot if phase 1 reductions continued.
5) The Board did authorize a proposal to the City of Dublin for the
use of recycled water at the Dublin Sports Grounds (attached as
Exhibit 1) . Staff has been analyzing this proposal and hopes to
have a recommendation to the City Council at Council's next regular
meeting.
B) Use of Wells at Parks
Staff has prepared specifications for bidding for the drilling of a
well at Shannon Park to reduce the City's reliance on potable water for
irrigation at this park. Staff has delayed the work to install a well at
the Dublin Sports Grounds until the proposal to use recycled water at the
Sports Grounds has been acted upon.
In researching the deed to Shannon Park, it appears that there is an
exception to title which would prohibit Dublin from using the underground
water via well. The original owners of the land, Volk-McLain, held back
the -water-rights when deeding out the land. Staff and the title company
are researching this possible exception to see it it does exist on the
Shannon Park property, and if so, whether the exception can be eliminated
from title through a quitclaim deed.
C) City Maintenance Water Cutbacks
The City Maintenance Staff has cut back irrigation usage and has been able
to meet DSRSD' s voluntary 25% cutbacks. In fact, a 40% reduction over
last year at this time has been obtained at the Dublin Sports Grounds .
Aerations are scheduled for the week of May 13. These aerations help to
allow water to get to the lawn root system, rather than sit on top and
evaporate, thus reducing the demand for water.
Drip irrigations are being installed in median shrub areas to help cut
back on needed water.
The water cutbacks on some of the turf areas have caused some discoloring
(yellowing out in patches) ; however, the turfs are not in danger of dying
and will green up again once normal watering is resumed.
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DUBLIN ((l'
%051 Dublin Boulevard•
SAN RAMON N • �� Dublin.California 9.4568 •
FAX: 415 429 1180
SERVICES .6*Pp''�'e4j+etnNC• ~G
DISTRICT `CES 1/ , 415 824 0515
May 8, 1991 4f�
• C'F
Mr. Richard Ambrose ?j-
City Manager, City of Dublin k's, ci7g9 4
100 Civic Plaza C'
Dublin, CA 94568 '13,Q,
'tS
Dear Mr. Ambrose:
Following our preliminary discussion April 19th of a proposal to replace potable water with
advanced treated recycled water for irrigation of the Dublin Sports Grounds, I presented this
matter to the District Board of Directors. This letter is to offer for your consideration a.draft
proposal that received strong support when discussed at the regular Board meeting of May 7,
1991.
The provisions of the District's offer are as follows:
• DRAFT PROPOSAL
FOR
RECYCLED WATER FOR THE DUBLIN SPORTS GROUNDS
MAY 8, 1991
By: Dublin.San Ramon Services District •
To: City of Dublin
PROJECT:
Service: To provide recycled water to meet California Department of Health
Services Standards for Unlimited Public Contact (Title 22: 2.2 MPN,
2.0 NTU)._, Water to be coagulated, filtered, twice disinfected after
secondary treatment.
Quantity: Minimum amount - 57 AC-FT/year
- Equal to current use -
Flow: Maximum Daily - 185,000 gallons
Peak flow - 515 gpm at 55 psig.
COST: $40,072/year to escalate at one half the rate of drinking water quantity charge
increases. To be billed in equal bi-monthly invoices.
ADDITIONAL
QUANTITIES: Water in excess of 57 acre feet per year will be supplied at 90% of the prevailing
cost of drinking water.
H I
if
Mr. Richard Ambrose
May 8, 1991
Page 2
:.: TERM: • A 10 year purchase commitment is required.
PERMIT: • District must obtain a permit from the Regional Water Quality Control
Board (RWQCB).
• When obtained, permit will require signing of grounds indicating use of
recycled water, District must monitor operation for control of runoff and
- -- ponding and water quality must be monitored and reported by the
District to the RWQCB.
NEXT STEPS: • Gain Zone 7 support for 10 year use of recycled water at no financial
cost nor penalty in access to water.
• Obtain easement to cross I-580 at reasonable cost.
• Consider fee to support District contribution.
MAINTENANCE: • The District shall operate and maintain all treatment and pumping
equipment and piping upstream of the point of connection to the City's
irrigation system. The City shall operate and maintain all facilities and
equipment downstream of the point of connection to the irrigation
equipment.
COST DETAILS:
CAPITAL: FILTRATION EQUIPMENT $225,000
With Pumps, Chemical Feed,
Equipment, etc.
DISTRIBUTION PIPING $160,000
TOTAL CAPITAL $385,000
Principal and Interest
10 yrs. @ 8.5% $57,300
OPERATION: TREATMENT PLANT OPERATOR $11,870
2 Hrs./Day 180 Days/Yr. @ $32.97
CHEMICALS AND ELECTRIC POWER $12,000.
LAVWMA ENERGY CREDIT -$1,026
57 AF @ $45.00 - 40%
$22,844
•
•
Mr. Richard Ambrose
May 8, 1991
Page 3
Further explanation of a few points may be helpful.
COST SHARING - In order to improve the reliability of our water supply, and make the
best use of imported drinking water, the District offers to fund one half the initial operating
and capital cost of supplying recycled water to the Sports Grounds. The engineer's report
estimates an annual capital cost of$57,300 and an operating cost of$22,844 per year for a
total annual estimate of$80,144.. The City's initial annual contribution would therefore be
$40,072 to be escalated at one half the rate of future increases in the quantity charge for
drinking water.
•
TERM OF AGREEMENT -The District is willing to make the necessary capital investment
if the City will commit to a 10 year agreement for purchase of recycled water at the annual
fee noted above. Amortizing the capital cost of nearly $400,000 over a shorter period
produces a unit cost of water that is hard to justify.
•
LAVWMA ENERGY CREDIT - At present energy prices the cost for the Livermore
Amador Valley Water Management Agency (LAVWMA) facilities to pump one acre-foot of
water over the Dublin Grade is about $45. Since this cost can be avoided by reusing water
in the valley a credit has been included in the $23,015 annual operating cost. Because the
flow meters used to calculate the District's contribution to LAVWMA operating expense
cannot distinguish between the District's flow and water from Pleasanton, only 40% of the
energy credit has been applied to the calculation of operating cost for the Sports Grounds.
This is based on the general distribution of treatment plant use.
METER CHARGE-The Dublin Sports Grounds are currently served potable water through
a 4" water meter. The City of Dublin pays a bi-monthly meter charge to defray
costs of the District to maintain equipment. These "readiness to serve" charges will
continue for the District and therefore the continued payment of the appropriate 4" meter
charge, currently $641.30 bi-monthly, would be a requirement of the agreement to provide
recycled water. Of course payment of this fee entitles the City to the potable water allocated
to this meter size in the event rationing becomes required. Under the pooled allocation
provision of the District's Water Use Reduction Plan this water would be available for use
at any City facility.
As we have discussed on a couple of occasions, it is very difficult for any utility district, or city
to provide a new supply of water whether recycled or not, at a cost competitive with our
drinking water. The potable water operations benefit from economies of statewide scale and
decades old investment in infrastructure. Nonetheless, it has been our objective in this proposal
to make the recycled water generally competitive with your cost of potable water. in evaluating
the proposal, consider the following:
• Current quantity charge for a year's supply, 57 acre-feet of potable water: $31,300.
• First 57 acre-feet of recycled water will cost $40,072. However trace amounts of
nitrogen and phosphorus will be left in the water as nutrients recommended for turf
•
Mr. Richard Ambrose
May 8, 1991
Page 4
grass.. These nutrients will reduce fertilizer demands by an average of$400 per acre
per year. Net value on 171 acres at the Sports Grounds: $7,000. Effective cost
of water $33,072/year.
• The District proposes to raise the cost of recycled water at one-half the increase in
the quantity charge of potable water. If the Zone 7 cost of treatment and District
cost of energy and chemicals increase at 3% per year in the 6th year of the
agreement the recycled water becomes less expensive than potable water if fertilizer
savings are considered.
• Additionally if the 5 acres at the Civic Center are irrigated at the same rate as the
Sports Grounds with recycled water purchased at 90% of potable water cost a
savings of about $895 per year would result on this additional water alone. The
savings increases to $2,895 per year if fertilizer savings are considered. This would
be recycled water used in addition to the 57 acre-feet per year base amount.
Please note that to date the District has invested more than $10,000 to study the additional
treatment needed, how it can best be provided and for field work to confirm or deny an available
conduit under I-580. The proposal is silent on recovery of the initial expenditure because, as
noted above, the District believes that this project makes best use of community water resources
and wishes to make it attractive to the City.
Any project will be contingent upon permitting by the Regional Water Quality Control Board,
gaining an easement to cross Interstate 580, and developing an equitable funding source for the
District's contribution to the project. With regard to funding, the Board has discussed imposing
a Water Reliability Fee on District water customers to augment water supplies for current
residents. A survey will be sent to the customers this week asking their opinion of uses of
recycled water, whether they support a fee for initial projects and if they support a fee, what
amount they are willing to pay. This fee will affect the City with its 47 current water services
and certainly every opportunity will be given for all customers to comment before any decision
is made. Consideration of this fee is independent of the Dublin Sports Grounds project and the
amount collected would be based on needs which are broader than can be met solely with
recycling projects.
We are open to discussion of the draft proposal. When it appears that agreement can be reached
District staff will resume work on permits and easements to support the project so that the
investment and enjoyment by our community in the playing fields and parks will not be
threatened by drought.
Very truly yours,
� 0-/9---
IJ I?� v
ROBERT D. BEEBE
General Manager
RDB:gb
i. '•/WHEN. RECORDED MAIL TO 88- I 58845
CITY OF DUBLIN 01 ,
P.O.Box 2340
Dublin, CA 94568 ! `1
RECu J O IN OFFICIAL RECOP.DS
OF ALAMEDA COUNTY, CALIF
RENE C. DAVIDSON. County Recorder No Tax Required
JUL - 1 1988
PM
1 81910111112111213141516 Li:G� , ,i
�iJCit Attorney of Dublin,
. D- /tt A Declarant
QUITCLAIM DEED
For valuable consideration , DUBLIN SAN RAMON SERVICES
DISTRICT, A Public Agency does hereby remise, release and forever
quitclaim to CITY OF DUBLIN, a Municipal Corporation, the
following described Real Property in the State of California,
County of Alameda, City of Dublin more particularly described as
follows:
Beginning at a point on the western line of State Highway 21, as
said highway existed on July 14, 1955 , distant thereon North 12°
41 ' 25" West 391 . 70 feet from the southern end of the course
designated as "South 13° 13 ' 44" East 1042. 46 feet" in the deed
by Charles A. Gale, et al. , to State of California, dated July
14 , 1955 , recorded December 8 , 1955 in Book 7869 of Official
Records of Alameda County, at page 425 , (AK/134140) ; thence from
said POINT OF BEGINNING along the western line of said State
Highway as established by said deed to State of California South
12° 41 ' 25" East 391 . 70 feet; thence South 47° 18 ' 35" West 23 . 09
feet; thence South 12° 41 ' 25" East 20 . 00 feet; thence South 72°
41 ' 25" East 34 . 63 feet; thence South 12° 41 ' 25" East 235 . 85
feet to a point on the general northern line of Shannon Avenue,
as described in the instrument to the County of Alameda, recorded
June 1 , 1967 , Reel 1973 , Image 585 Alameda County Records , as
Series No. AZ/51425; thence along the last named line on the arc
of a tangent curve to the right with a radius of 20 . 00 feet a
distance of 31. 42 feet; thence South 77° 18 ' 35" West 20 . 00 feet;
thence along the arc of a tangent curve to the right with a
radius of 206 . 00 feet a distance of 74 . 27 feet; thence North 82°
02 ' West 58 . 47 feet; thence North 86° 36 ' 26" West 50 . 16 feet;
thence North 82° 02 ' West 11 . 53 feet; thence along the arc of a
tangent curve to the left with a radius of 570 . 00 feet a distance
of 266 . 12 feet; thence South 71° 13 ' West 121 . 95 feet; thence
along the arc of a tangent curve to the right with a radius of
. . __,_________, _ ___ _ . _____.. 4
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, _ _ _ _ _ , ,4:: ..g ,, .,.... • _ _ . . .
r . •
• • 89- 1 58845
210. 00 feet a distance of 80. 15 feet; thence North 86° 54 ' 59"
West 60 . 58 feet; thence along the northern line of Shannon
Avenue, as established by Resolution No. 121922, of the Board of
Supervisors of the County of Alameda, a certified copy of which
was recorded August 29 , 1967 , Reel' 2027 , Image 513 , Alameda
County Records, Series No. AZ/86459 , North 86° .54 ' 59" West 5. 00
feet to a point on the exterior boundary line of Tract 2749 ,
filed August 10 , 1967, Map Book 55 , page 50 , Alameda County
Records; thence along the last named line and its prolongation
North 3° 05 ' 01" East 549. 75 feet; thence North 21° 13 ' 31" East
84. 66 feet until intersected by a line drawn South 77° 18 ' 35"
West from the point of beginning; thence North 77° 18 ' 35" ,East
544. 95 feet to the POINT OF BEGINNING.
Excepting therefrom: One-half of all oil, gas and other
hydrocarbon substances in and under or that may be produced from
a depth below 500 feet of the surface of said land without right
of entry upon the surface of said land for the purpose of mining,
drilling, exploring • or extracting such oil, gas and other
hydrocarbon substances or other use of or rights in or to any
portion of the surface of said land to a depth of 500 feet below
the surface thereof as reserved in the deed from Volk-McLain
Communities Inc. , formerly the Volk-McLain Co. , a corporation to
The Roman Catholic Archbishop of San Francisco, a corporation
sole, recorded December 29 , 1961 on Reel 483, Image 613, Official
Records, as Instrument No. AS/161891.
Excepting therefrom all water rights, including the right to use
subterranean waters together with any pipes , wells or other
equipment relating to the use of or extraction of water from or
under said property, as reserved in the deed of gift by
Volk-McLain Communities Inc. , formerly the Volk-McLain Co. , a
corporation, to The Roman Catholic Archbishop of San Francisco, a
corporation sole, dated October 17 , 1961 , recorded December 29,
1961, Reel 483 , Image 613 , Official Records , as Instrument No. j
AS/161891.
RESERVING AND EXCEPTING from the aforedescribed premises
(hereinafter referred to as "Premises" ) an exclusive easement and
right, from time to time, to construct, maintain, operate,
replace, remove, repair, alter and add to a pump station,
pipeline and appurtenant equipment and fixtures for the delivery
of water in, under, and along a portion of the Premises together
with the right of ingress to and egress from said easement for .
operation, maintenance and construction purposes over and across
the Premises , such portion of the Premises being a portion of
that certain parcel of land described in the deed to Valley
Community Services District (a political subdivision) recorded
August 10 , 1961 , as Exhibit "A" (page 1) in Reel 2191 , Image 417 ,
Official Records of Alameda County, more particularly described
as follows:
Commencing at a point on the southerly line of said Valley
Community Services District parcel (2191 OR 417) at the westerly
2
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a
, 85° 156845
end of a tangent curve concave to the south having a radius of
570 . 00 feet, a tangent bearing to said beginning of curve bears
North 71° 13 ' 00" East; thence easterly along said curve and said
southerly line (2191 OR 417) an arc distance of 28 . 26 feet
through a central angle of 2° 50 ' , 26" to the TRUE POINT OF
BEGINNING; thence continuing along said curve and said southerly
line (2191 OR 417) an arc distance of 58 . 26 feet through a
central angle of 5° 51 ' 21" ; thence leaving said southerly line
(2191 OR 417) North 12° 51 ' 05" West 36 . 71 feet; thence south 77°
08 ' 55" West 58 . 23 feet; thence South 12° 51 ' 05" East 36. 88 feet
to the TRUE POINT OF BEGINNING.
FURTHER RESERVING AND EXCEPTING from the Premises an easement
and right, from time to time, to construct, maintain, operate,
replace, remove, repair, alter and add to an existing water
pipeline, hydrant and appurtenant equipment and fixtures in,
under and along the Premises , such easement to be of sufficient
width for the aforedescribed purposes and to be located along the
actual centerline of said existing waterline for its full length
on the Premises, which centerline generally follows the following
described line:
Commencing at the northeast corner of said Valley Community
Services District parcel (2191/417) ; thence South 12° 41 ' 25"
East along the east line of said District parcel (2191/417) and
the west line of State Highway No. 21 a distance of 300 feet,
more or less , to an existing waterline and the TRUE POINT OF
BEGINNING for this description; thence leaving said east line
(2191/417) and the westline of State Highway No. 21 in a westerly
direction along the centerline of said existing waterline 56
feet, more or less , to an angle point, hereon referred to as
Point "A" ; thence northerly along said centerline 50 feet, more
or less, to an angle point; thence northwesterly along said
centerline 170 feet, more or less , to an existing fire hydrant;
thence continuing along the prolongation of the centerline of the
existing waterline 8 . 00 feet to the terminus of this description.
DUBLIN SAN ON SERVICES DISTRICT
By: Lf G / '(
OSEPH COVELLO, President
ACKNOWLEDGMENT:
3
e E
CITY OF DUBLIN
MEMORANDUM
DATE: May 7, 1991
TO: Lee S. Thompson, Public Works Director
FROM: Mehran Sepehri, Sr. Civil Engineer _
SUBJECT: Shannon Park Well
On April 8, 1991, the City Council directed Staff to prepare specifications
and -a cost estimate for the installation of a water well in Shannon Park.
The City needs 200 gallons per minute (GPM) at 35 psi to water the Park.
Watering will be done on a rotation basis.
According to Dublin-San Ramon Services District (DSRSD) , water in the Dublin
area is shallow (between 80 to 100 feet deep) . However, they recommended
the City drill a well at least 300 feet_deep to get better quality water and
longevity of the well. The depth of the water cannot be established until a
test well or the actual well is drilled. To drill a test well is less costly
than drilling the actual well. Therefore, the contractor will drill a test
well to establish if the well will produce water at 100 GPM and test the
quality of the water. If the quality and quantity of the water is good, a
sample of water bearing formation will be taken for a sieve analysis run and
a recommendation will be made for the size and amount of screen to prevent
sand from reaching the pump. Then the actual well will be drilled.
The well casing can be either steel pipe or PVC. Steel is stronger; however,
it does not last as long due to corrosion. Soil in the Shannon Park area has
a high acid and salt content. PVC pipe would be a less expensive and better
choice as it would not corrode.
Staff has estimated the cost to be approximately $155,000 for installation
of a 6" inch diameter, 500 feet deep well, including the pump and all
equipment necessary. The cost estimate is based on a well depth of 500 feet
as most of the wells that DSRSD has, or used to have, are that depth. The
cost of installing a well in Shannon Park can be made up within 6 years by
saving approximately $10,000 per year in water charges. The cost of
electricity to run the pump will be approximately $2,000 per year. The pump
may need to be replaced every 10 to 15 years at a cost of $6,000.
Staff is in the process of completing the specs with an expected completion
date of May 15th. If everything goes as expected, the well could be in
operation by July 1991.
The City will save money over the long term, use less potable water, and
maintain green lawns for the citizens of Dublin and Shannon Park visitors to
enjoy by installing the well.
MS/mb