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Scope of Service
Ashland Water Supply Study
Attachment A
October 20, 1988
Page 1
The following work scope has been established for the Ashland Water
Supply Study. The scope identifies four tasks which will be completed ini-
tially.
Task 1 - Water Demands
The purpose of this task is to prepare a tabulation of water system
demands for the 1989 to 2010 time period. These demands will be based upon
population data provided by the City of Ashland. Specific tasks include:
2.
3.
4.
5.
Tabulation of population estimates.
Analysis of per capita usage.
Estimate of delivered water demand.
Estimate of treated water demands.
Estimate of raw water demands.
Task 2 - Annual Raw Water Yield from Existin9 Sources
This task will focus on making an updated estimate of the water
supply available from the City's existing diversions, Reeder Reservoir and
from water purchased from the Talent Irrigation District (TID). The analysis
will utilize historical records to determine the probability of the system
yielding a firm water supply. Specific tasks include:
Tabulation of historical stream flow records and synthesis of miss-
ing records.
Evaluation of yield from Reeder Reservoir, including allowances for
downstream rights, evaporation, and sluicing; yields will be based
upon historical flow records using probabilities based upon these
past events.
The supply from the TID will be evaluated based upon the existing
contract and the hydrology of the TID system. The yield of the
combined TID and City system will be determined.
The above results will be compared with the raw water demands from
Task 1 to determine present and future water supply deficiencies.
Statistical probabilities of water shortages occurring will be pre-
sented.
(L4131e)
Scope of Services
Ashland Water Supply Study (cont'd)
Attachment A
October 20, 1988
Page 2
Task 3 - Winburn Reservoir Evaluation
The proposed Winburn Dam and Reservoir will be evaluated as a
source of water to meet expected water shortages. Existing data will be util-
ized extensively and no new field data will be developed. Tasks include:
Compilation of physical data (area vs. capacity, drainage area,
runoff, dam embankment volumes, spillway design data, etc.).
Annual system yields will be developed using the same statistical
basis used in Task 2. The yield for several reservoir sizes will
be compared with the projected water demands. Reservoir capacities
will be selected to meet water demands for several drought occur-
rence probabilities.
e
The existing cost estimate for the dam project will be reviewed and
updated and extrapolated to cover several reservoir sizes.
e
The potential for generating supplemental hydropower from the res-
ervoir will be briefly evaluated.
Task 4 - Implementation Schedule - Report
A schedule for completing additional studies, obtaining peri, its,
designing, and constructing Winburn Dam will be prepared and included in the
study report. A number of scenarios will be presented; this will al low Ash-
land to evaluate options based upon the availability of the various water
sources and the probability of meeting projected demands.
All of the above tasks will be compiled into a draft project report
which will be submitted to Ashland for review. The final report will include
an Executive Summary suitable for distribution to a non-technical audience.
The results of the study will be presented at a meeting of the City Council.
In addition, the results of Tasks 1 and 2 will be presented to the City staff
when they are completed.
A total of ten (10) copies of the draft report and fifty (50)
copies of the final report will be provided to the City.
(L4131e)
Attachment B
October 20, 1988
Payment Schedule
Ashland Water .Supply St.u.dS
Per Part II, the estimated total amount to be paid for services and
expenses by the client shall not exceed ~21,150.
The following is an itemization of personnel expected to work on
the project with hourly salary costs estimated hours and expenses.
Individual or Estimated Hourly
Task Activity Hours SalarS Cost Total Cost(l)
1 Mike Stansbury 24 36 $ 2,070
Brad Einfeld 8 33 630
Expenses 500
Subtotal $3,200
Mike Stansbury 40 36 $ 3,460
Brad Einfeld 8 33 630
Mike Giseburt 40 21 2,020
Graphics 12 16 460
Typing 8 12 230
Expenses 1,500
Subtotal $ 8,300
Mike Stansbury 30 36 $ 2,590
Graphics 4 16 150
Typing 8 12 230
Expenses 170
Subtotal $ 3,140
o
Mike Stansbury 32 36 $ 2,770
Graphics 24' 16 920
Typing 32 12 920
Expenses 400
Printing Costs 1,500
Subtotal $ 6,510
Total Estimated Cost
$21,150
(1)Includes 2.4 multiplier on salary costs.
(L4131e)
R.W. BECK
UU-OOOO-BD-AB
November 3, 1988
Mr. Steven M. Hall, P.E,
Public Works Director
City of Ashland
City Hall
20 East Main Street
Ashland, Oregon 97520
Dear Mr. Hall:
Subject:
Addendum to Water Supply Study
Profe~sionQ.l: Servic)} Agreement
As we discussed on the telephone yesterday, three additional tasks
are to be added to our Agreement. The tasks are as follows:
Task 1 - The impact of water usage due to visitors to Ashland during the
tourist season will be evaluated.
Task ~ - The impact of maintaining minimum flows in Ashland Creek upon
existing and future yields will be evaluated.
Task
A brief, reconnaissance level appraisal of obtaining water from
Medford will be undertaken. The cost of a pipeline and pumping
station will be prepared.
The additional cost of including these tasks in our work scope is
as follows:
Task 1 - No additional cost; this information will be developed concur-
rent with existing water usage data.
Task 2 -
Task 3 -
Four additional hours for Mike Giseburt at a cost of $200.00.
Six additional hours for Mike Stansbury and 2 hours of graphics
for a cost increase of $600.00.
The increase cost of $800.00 brings the total estimated cost for
the contract to $21,950,
Mr. Steven M. Hall, P.E. -2- November 3, 1988
If you have any questions or need additional information,
give me a call.
Very truly yours,
R. W. BECK AND ASSOCIATES
please
MRS/ato
(A431 Se)
Michael R.-St~ansb'u'Fx [ .......
Executive Engineer
Approved on:
STEVEN M. HALL, P.E.
PUBLIC WORKS DIRECTOR
CITY OF ASHLAND