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TIGARD WATER DISTRICT
BOARD OF COMMISSIONERS MEETING MINUTES
September 12, 1994
1. Call to Order
Chair Froude called the regular meeting of the Tigard Water District Board of
Commissioners to order at 7:05 p.m.
Commissioners Present: Chair Froude,Commissioners Morgan,Mortensen,and
Pederson. Commissioner Haunsperger arrived at
approximately 7:35 p.m.
Staff Present: Sherrie Burbank, Mike Miller, Randy Volk, and Ed
Wegner
2. Visitors
No visitors were present.
3. Approve August 8, 1994 Regular Meeting Minutes
Commissioner Mortensen motioned to approve the meeting minutes as submitted
and Commissioner Pederson seconded the motion. A voice vote was taken and
the motion was passed unanimously.
4. Financial Statement 1993/94 Fiscal Year
• Maintenance Services Director Ed Wegner referred the Board to the Financial
Statement provided by Finance Director Wayne Lowry. A copy of this report
for.January 1 through June 30, 1994 will be forwarded to the State to meet
financial audit requirements. Mr. Wegner also informed the Board that if they
had any additional questions, they could either contact Mr. Lowry or he could
forward their questions to him.
• A copy of the June 30, 1994 Income Statement and Balance Sheet was also
part of the Commissioners' packets for their review.
Chair Froude verified that the total June 30, 1994 ending balance was
$34,972.25. The Board questioned whether an official audit was necessary.
Mr. Wegner indicated that all that was necessary was for the Board to-accept
this information and a final report and it would be forwarded to the State.
Commissioner Morgan motioned to accept the report presented and to request
staff to file the report with appropriate agencies; Commissioner Mortensen
TIGARD WATER DISTRICT BOARD MEETING — September 12, 1994 Page 1
sou I
. r
seconded the motion. A voice vote was taken and the motion passed
unanimously.
Commissioner Morgan also voiced the concern that the Board would like to
receive a monthly or quarterly report for expenditures in order to keep abreast
of non-routine items. Mr. Wegner informed the Board he would be addressing
this matter when he presented his report (Agenda Item #9).
5. Division of Assets Update
Mr. Wegner indicated that since the last meeting when Mr. Meigs (Economic and
Engineering Services, Inc.) presented his proposal to the Board staff has reviewed
the proposed changes in order to address questions and/or concerns identified
by the Board.
• Page 16 -- The question was about deferred compensation adjustment (legal
the way it should be done). It is right to change this to be an asset and liability
for the City of Tigard since all former Water District employees are now
employees of the City of Tigard. This means all the figures have been dropped
from King City, Durham, and TWD and have become an asset of the City of
Tigard. This in turn means some minor adjustments on the bottom of the page
to reflect this adjustment which Mr. Wegner explained to the Board.
Board decided that this matter should be acted upon to at least indicate they
understand the process and meaning of the adjustment Mr_ Wegner then
stated that the agreed-upon changes will be conveyed to Mr. Meigs so the
necessary pages of the report can be revised.
Commissioner Morgan moved to approve the amendments to Table 4-2 and
to advise the consultant to include these changes in final report. Commissioner
Mortensen seconded the motion. A voice vote was taken and the motion was
unanimously.
• Page 11, Section D.1-a -- Evaluations must total the amounts shown by
Coopers and Lybrand December 31, 1993 Audit Report. According to the
financial reviewers you want to compare these figures with the Coopers and
Lybrand report. The financial reviewers point out that it is the percentages that
count so no matter what the figures are of the valuation the percentages need
to be consistent throughout the report. In reviewing some of the Board's
previous minutes, that is what you instructed Coopers and Lybrand to do — to
Use those figures that they had. Just always remember that this is based on
the Cooper and Lybrand's Audit Report of December 31, 1993. This particular
item did not require any action. - . .
TIGARD WATER DISTRICT BOARD MEETING -- September 12, 1994 Page 2
• Page 21 -- Corrections were made:
- Adjustments were made under Deferred Compensation Liabilities to reflect
the changes to City of Tigard.
- Retained Earnings and Combined Capital is what is equal to the agencies'
equity. 'Total Agency Equity" is the only line that will appear. 'Total Agency
Equity" is either addition or subtraction of the Combined Capital and
Retained Earnings. This will, however, change the Total Liabilities and
Agency Equity figures.
Commissioner Morgan made a motion to make the same motion as made
with regard to Exhibit 4.2 as it applies to Exhibit 5.2 and the allocation of
Liabilities and Agency Equities. Commissioner Pederson seconded the
motion. A voice vote was taken and the motion was passed unanimously.
Mr. Wegner indicated that everything was driven off these two pages; that is
what we are telling him to change.
• Appendix B — Allocation of Land Values
- Mr. Wegner advised the Board that a "0" for Reservoir 2 and Reservoir 4
indicates there is no historical record of the cost of the property. He
advised the Board that they might want to consider instruct staff to have an
appraiser determine the land value at the time it was either purchased or
deeded to TWO and subsequently divide the allocation. It is important to
realize that we have to use historical value in order to conduct a true value
comparison -- we cannot use today's market value.
Discussion followed regarding what would be gained and other possible
avenues to use to determine the value of the land. Mr. Wegner informed
the Board that one result would be to assure that if there was a split that the
other parties might be eligible for a portion of the value.
Commissioner Morgan moved to accept the values as stated in the
Appendix B for purposes of allocation. Clarified retaining the valuation as
listed in the appendix.
- Mr: Wegner suggested discussing another question pertaining to the same
page before making a motion. Regarding the reservoir site at Scholls Ferry
Road and on the future reservoir site on 150th it was staff's
recommendation to request.Mr. Meigs to examine the potential for site
development and determine if assets should be noted in the report for,
future division of assets among the jurisdictions who would serve the area
if and when they are built.
TIGARD WATER DISTRICT BOARD MEETING -- September 12, 1994 Page 3
Commissioner Morgan clarified that these sites are not reservoirs which
means that if any party should withdraw at some future date then there will
be an evaluation of those changes that have been made since December 1,
1993.
Discussion followed regarding gains from assigning additional research of
assets and the basis for the validity of the figures. It was recognized that
due to the lack of historical information Mr. Meigs and the Board would
operating on incomplete information and that it was important to remain
consistent. It was recommended that a footnote be used to identify that
historical data was unavailable.
Mr. Wegner informed the Board that if a party pulled out, there would need
to be an evaluation of the current values to revise the "0" value.
With the arrival of Commissioner Haunsperger, Mr. Wegner reviewed the
current discussion items:
1) Ask for a projection of allocations for the three zeros identified in
Appendix B to reflect the value of future reservoirs.
2) Since a value could not be identified for Reservoirs 2 and 4, an
appraiser would need to conduct research to determine a value in
order to eliminate the noted "0". It will have to be done — either now
or when a party decides to withdraw from TWD.
Commissioner Morgan contended that if you assume the best
possible/available data has been provided and that the undeveloped sites
are the exclusive property of TWD, it would be best to evaluate the values
at that time insteadof spending the money now to get a "best" judgement
decision.
Commissioner Morgan repeated his motion to accept the allocation of land
value as shown in Appendix B. Commissioner Haunsperger seconded the
motion.
Additional Discussion: Commissioner Pederson pointed out that if someone
came across this report and was not a part of the discussion, they might
question how there could be land with no value. It was suggested a
footnote would be appropriate to clarify the meaning of the "0" value.
Commissioner Morgan added as part of his motion to include a footnote
indicating the absence of an allocation. Commission Haunspergee accepted
the change as part of the motion. A voice vote was taken and the motion
passed unanimously.
TIGARD WATER DISTRICT BOARD MEETING -- September 12, 1994 Page 4
• Mr. Wegner indicated staff found the rest of the report acceptable and believes
it meets the requirements of the agreement.
Commissioner Morgan pointed out that TWD Board has had more opportunity
to review the report than the other participants at the upcoming joint water
meeting. He stated he believed it would facilitate the meeting if the TWD Board
establishes a position regarding the plan prior to the meeting. He then read a
policy position which if accepted by the Board could be presented at the joint
meeting and made part of the official record. This would assure that if there
was a challenge, TWD would have their position on record.
Commissioner Morgan moved that the policy position of the TWD be stated
and conveyed to the other agencies (see Exhibit A).
Commissioner Haunsperger seconded the motion. Discussion continued
recognizing that the TWD Board commissioned to have the Asset and Liability
Report completed to comply with the ORS and that it was their responsibility
to accept the report. A voice vote was taken and passed unanimously.
Mr. Wegner stated in his opinion the Board has affirmed that the sole purpose
of the Asset/Liability Report is to provide a record for the future when a party
decides to withdraw from TWD. Legally the Board had to provide the basis for
future challenges or withdrawal.
6. Water Supply Plan
Mr. Wegner updated the Board on the Water Supply Plan and the upcoming joint
water meeting. He summarized the agenda for Wednesday's night meeting. This
meeting is designed to be an informational meeting to share the two topics —
Division of Assets and Water Supply Plan. He also informed the Board that staff
has not heard any negative comments regarding either topic.
Reviewed the seven options reviewed by Murray Smith and the process they used
for developing their report. Identified the top two options as City of.Portland and
a partnership with Lake Oswego. Bottom line -- Murray Smith recommends that
IWB begin negotiations with Lake Oswego to become a partner in the water
business. Informed the Board of a meeting with staff from both jurisdictions and
that a negotiation team for both jurisdictions was established.
After a favorable presentation to the COT Council by Murray Smith, staff is
recommending that work begin with Lake Oswego after the 9/14/94 meeting. At
the same time, staff will be keeping in mind the importance of a regional,focus for
future development. Staff is also determining operational responsibilities Must
remember that even if we agree upon this partnership right now, it will still take
three to five years to be fully operational. In the meantime, we must work out an
interim plan especially to meet our summer requirements..
TIGARD WATER DISTRICT BOARD MEETING — September 12, 1994 Page 5
Discussion followed regarding past negotiation of contracts. Mr. Wegner
emphasized that Lake Oswego is open to negotiating a partnership now--the time
is right. The discussion also included issues raised in relation to issuing of bonds,
Measure 5 impacts, future regional focus, politics, interest (or lack of) by involved
parties, and long term water contracts and usage.
Mr. Wegner presented two possible scenarios for future action after the
September 14 water meeting:
- If there is a recommendation from IWB to accept the Murray Smith plan and to
forward the plan to the COT Council, then it will be placed on either September
27 or October 11 agenda.
- If IWB is not prepared to accept the plan and decide to hold it over, they could
possibly meet on September 28 to approve it and pass it on to the COT
Council for their October 11 or October 25 agenda.
In response to Commissioner Morgan's question about TWD approval, Mr.Wegner
indicated that it is not necessary for the Board to approve the plan separately since
they have given the authority to their IWB representative.
7. Easement Extinguishment
Commissioner Morgan moved that the City of Tigard relinquish the existing water
main (Resolution 94-03) and Commissioner Haunsperger seconded the motion.
A voice vote was taken and the motion passed unanimously.
8. Intergovernmental Water Board Update
Commissioner Morgan indicated-that the substance of his report was covered in
Mr. Wegner's comments about the water supply plan.
The IWB meeting on August 17 was devoted to receiving the water consultant's -
report and recommendation. He indicated that Mr. Wegner was present to review
the timetable for water issues as he had at the TWO Board meeting on August 8.
The Murray Smith report identified some of the capital costs that would be required
if the recommended plans were implemented. The key issue is whether the City
'of Tigard would be a partner with an equity interest. It also identified the necessity
for a short-term (3-5 years) plan to cover thewater needs while the larger plan was
being constructed. From the information presented, it is quite evident that this last
year was a warning about our inadequate water supply source.
He stated that the Murray Smith concluded IWB is not in a strong bargaining
position except with the City of Lake Oswego because they need us. He believes
the plan is acceptable, but there is no way to evaluate the costs.
TIGARD WATER DISTRICT BOARD MEETING -- September 12, 1994 Page 6
Commissioner Morgan voiced a concern about the staffs capacity to meet major
time requirements including public information, negotiating requirements with Lake
Oswego, Portland, and Tualatin Valley regarding the needs and interests of
IWB/TWD. He wants to recognize the possible need for assistance to assure
deadlines are met especially during peak workload periods.
The Board agreed that all involved parties need to recognize that additional people
might be needed to accomplish the various tasks.
9. Director's Report
Mr. Wegner informed the Board that the Finance Department has had numerous
calls regarding the joint water/sewer bills. In addition, calls have been received as
a result of customers' payments mailed from one of the pick-up points being
incorrectly forwarded to San Francisco and the implementation of the new hand-
held computers at the same time as new joint billing process. It was recognized,
however, that USA experienced additional calls during the first two months of their
new consumption-base billing process.
Mr. Wegner also outlined the reorganization of the Maintenance Services
Department: Randy Volk will oversee Field Operations for water, sewer, and part
of storm water; Mike Miller will be responsible for water supply; and John Acker
will manage the Property Division. Fleet Maintenance has physically moved to the
Water Building. The City is anticipating a reduction in expenditures since all vehicle
maintenance will be performed internally rather than contracting these services with
an outside vendor.
Mr. Wegner also informed the Board that as soon as IWB makes a
recommendation regarding the Water Supply Plan, he has a contract with Murray
Smith to carry through the negotiation phase and an engineering consultant to be
used on water matters. He stated he recognizes that staff will need additional help
due to the numerous tasks associated with the project and ongoing duties. The
City of Tigard is gearing up by using both internal and external consultants.
Mr. Wegner also included two monthly financial statements for July and August.
The first page identifies current expenditures, year-to-date expenditures, and prior
year-to-date information for historical purposes. The second page lists current
month expenditures.
He also explained that billing for staff services will be done on a quarterly basis and
provided examples on how these services were charged.
Chair Froude noted that there $4,302.69 was listed under Accounts Payable and
questioned what this was for. Mr. Wegner explained that it was a partial payment
for the Division of Asset Report. However, since they were not responsible for
TIGARD WATER DISTRICT BOARD MEETING -- September 12, 1994 Page 7
financing the contract itself, the money which was removed in error was put back
into the TWD account.
10. Non-Agenda Items
There were no new agenda items introduced at this time.
11. Commissioners' Comments
Commented that they like to have the meeting dates on the agendas. Also
requested that staff sign-off on minutes.
12. Next Meeting
The next meeting of The TWD Board will be held on October 10, 1994 at 7:00 p.m.
13. Adjournment
The meeting adjourned at 9:29 p.m.
sb\twd912
TIGARD WATER DISTRICT BOARD MEETING — September 12, 1994 Page 8
EXHIBIT A
TIGARD WATER DISTRICT
(From 9/12/94 Meeting)
System Assets and Liability Allocation Report
(Draft 8/8/94)
Findings and Conclusions:
1. Report appears to represent fairly and completely the assets
and liabilities of the TWD as of January 1, 1994.
2. Report appears to represent and provide reasonable and
equitable allocation methods of the principal components of
the District's assets and liabilities among the four agencies.
(The absence of definitive records and proven methodology of
distributions are not considered significant or important to
the results reported. )
3. Report includes, identifies, and/or references invaluable
information regarding the resources of the agencies in the
water service area and imposes a major responsibility on the
Water Department's management to utilize this data and
information in its planning and operational functions.
Recommendations:
1. TWD accepts the report as an adequate response to the
requirements of the Intergovernmental Agreement and the
provisions of the District's contract with Economic and
Engineering Services, Inc.
2. TWD approves the methodologies employed in the identification
of all the assets and liabilities of the District on
January 1, 1994, and further approves the allocation
recommendations advanced by the consultant to the agencies
involved.
3. TWD recommends the acceptance of approval of the report to the
cities of Tigard, King City, and Durham as a document to be
utilized in the identification of the interest of each agency
in the assets and liabilities of the district as of January 1,
1994.
4. TWD recommends that the City of Tigard in the operational
management of the Water Department maintain an accounting and
recordkeeping system which would allow (permit). ,the updating
of the report at such time as may be required by reason of
termination of the Intergovernmental Agreement by one or more
of the signatory agencies.
MEMORANDUM
CITY OF TIGARD, OREGON
TO: Intergovernmental Water Board
Tigard Water District
FROM: Ed Wegner, Director of Maintenance Services
DATE: October 10, 1994
SUBJECT: Various Water Issues
1. WATER QUALITY
a. Taste and Odor. Attached are memos regarding the Lake
Oswego Water Supply. Many calls have been received from
our customers questioning the quality of our water. As
the memo explains, we are experiencing a temporary
situation which will occur to some degree annually.
b. Crptosporidium. Recent national news programa are making
the public aware of a relatively new problem that effects
water systems. The attached memo from the Chief Water
Plant Operator for Lake Oswego is provided to you so that
you are aware of the issue. The plant is not presently
testing for crptosporidium, but is taking prevention
steps to keep the problem out of our treated water.
2. ANNEXATIONS
The City is preparing and ordinance for the withdrawal of
approximately sixty acres from the Tigard Water District.
These parcels have been before the Boundary Commission
and approved. Those parcels are the same as we indicated
last month.
3. WATER CONSERVATION
a. The Columbia-Willamette Water Conservation Coalition (we
are a participating agency) is attempting to create a
working relationship with schools throughout the region.
The programs are broken down according to grade level and
are funded through our own budgets at no cost to the
schools.
b. Northwest Gas Company Water Conservation Program, at last
count, 2,694 water conservation kits have - been
distributed to customers within our service area as of
September 2nd.
4. WATER SUPPLY PLAN - Various activities are starting as we
begin this project.
a. Staff is developing a newsletter that will be a stuffer
in the bills being updated monthly to cover the billing
cycle.
b. MSA is preparing contracts to assist the City of Tigard
in further developing the Water Supply Plan.
c. Initial talks with Tualatin Valley Water District,
regarding an interim water supply plan have begun.
d. The City Administrator is preparing for his initial
meeting with the City Administrator for City of Lake
Oswego on a water partnership.
kathyVnema.iwb
InterOffice Memo
To: Randy Volk
From: Richard C. Sattler
Date: September 26, 1994
Subject: Water Quality Complaints
As you are well aware of I have been spending a majority of my time answering
questions about the quality of the water. I would venture to guess that the duration has
been over the last month and a half. The amount of calls have ranged form 50-75 calls
per day regarding this issue. Of these 50-75 calls per day, 1-12 require my attention.
I have listed a few of the descriptive terms used: sewer water; is this Tualatin River water
we are drinking; aquarium water;water with earthy smell; horrible water; etc..
Reasons for the increase of calls regarding water quality:
1). increase of water temperature of the Clackamas River
2). increase of growth on the river(algae)
3). rains of the labor day weekend stirred up the water in the river
We are not alone,the City of Lake Oswego has also noticed an increase of customers
complaining about water quality. Due to the increase of calls,Lake Oswego has added
carbon to their treatment of the water. Carbon is known for absorbing/removing
the taste and odor of the water. I have been told that this process is time consuming,
messy and costly. I would also like to note that this a yearly event,with this year being
particularly bad.
When I receive a call concerning the water quality I volunteer to take a bacteriological
sample from their location(usually inside the house from a kitchen or bathroom faucet).
My theory is that by having a piece of paper, (the bacteriological report from the
laboratory) I am able to give the customer documentation of the water quality. The
results are usually given via telephone, unless the customer requests a copy of the
bacteriological report.
CC: Mike Miller
FROG LAKE O5WEGO UTP 89.22. 1994 12=47 P. 1
StP-22-1994 10: ,
•
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•
To: Larry Sparring Date: September 21, 1994
From: Pete Kref. Reference: SPWB
Subject: Taste and Odor Problem
Tve been bearing about the taste and odor problems with Clackamas River water for about a
month now. All of the water providers(SPWR Clackamas WD,I ake Oswego)appear to be
having significant T&O problems and the customer complaints seem to be increasing as the
problem continues. rye had a few drinks of water from various places in the service community
and there is definitely a noticeable earthyhnusty taste and odor to the water.
We've had quite a bit of experience with T&O problems of this kind thoughout the country.
mese types of problems usually occur when the water is warm and are usually,but not always,
associated with algae blooms in reservoirs. Bruce Hemcnway said there is quite a large algae
bloom_in North Fork Reservoir right now. rye heard that the Clackamas River systems have
exledenced mild T&O problems like this 1n previous summers and early falls,but never to this
I wawa suspect that the long,hot,dry summer has the biggest impact on spurring the
bloom.
1,arthfmusty odors are usually caused-by the presence of very small concentrations(in the parts
per Mien range)of methylisoborneal(MIB)and/or gcosmin. These organic wuitwuuds are
formed as by-products of the metabolism of algae and w.: .,4+.fcetes. It is believed that the
compounds are created When the algae die. These compounds are very difficult to remove from
drinkinggpw�atear via
p normal /t,/t pproccesse�s••. Sometimes,the
�}addition
�o}ff chlorine
��wyilll�,increase
the intensity of the in odors. I would i 4v V�iI.�'av that some samples are taken to
verify the presence of MIBJgeosmin.
We have conducted many pilot and full-scale tests on the removal of these types of tastes and
odors. In summary,T&O controlcan be accomplished via oxidation or adsorption. The only
oxidant which has demonstrated a proven ability to destroy the compounds is ozone. Neither
chlorine,permanganate nor peroxide are sums enough to oxidize MIS and geosmin. This is
why I doubt whether KMnO4 will resolve your problem,but it is easy enough to try it and see
for yourself. As we discussed,I would suggest you add it at the intake to increase the contact
time and to minimize the potential for"pink water'if you overfeed it.
Activated carbon can adsorb MBlgeosmin, Powdered activated carbon(PAC)has been
successfully used in some WTPs,but the required doses are usually quite high(greater than IS
mg/L PAC !!). Many operators are reluctant to use such high doses for fear that the PAC will
carry over from the sedimentation basins and break through the filters. You can evaluate the
effects of PAC dose in jar tests,but you'll have to be careful how you conduct your"sniff test".
RECEFUED FROM 99.22. 1994 18=35 P. 1
- SEP-22-1994 10:57 MONTGOMERY WATSON POR-1 P.02
For plants without ozone systems,granular activated carbon(GAC)has been the most spcessful
method of removing MIB/geosmin. However,in order to provide the necessary contact time,the
anthracite in the filters is typically replaced with GAG. Many WTPs have added a GAC cap to
their filters and this has been able to significantly reduce T&O complaints. The OACs useful
adsorption life can be 5 years or more depending on the background TOC and frequency of T&O
episodes. The one problem with this method is that it must be used all the time at a significant
rust-time cost,but the T&O problem isn't present throughout the year. The cost to replace your
anthracite with GAC would be approximately$150,000. For comparison purposes,the
construction cost of a new ozone system would be approximately$1,000,000_
The City of Corvallis has been experiencing various kinds of tastes and odors from their
Willamette River source for many years including earthy/musty odors during the summer. They
are currently evaluating methods for reliably controlling T&O at the WTF. I believe they are
seriously considering replacing the anthracite with GAC. Perhaps you should call Dan Scottie
and discussion the situation further with him.
Unfortunately,there does not appear to be a"quick fix"for this type of problem. It may be
difficult to resolve the T&O problem this year and it will resolve itself eventually when the
weather cools off and the rains come. However,you may want to consider the options for
resolving the problem should they re-occur in future years.
Please call me if you have any questions or comments_ Thank you.
cc: Bob Jossis
Visa Obermayer
Becky Glenn
TOTAL P.02
RECEIVED FROM 99.22.1944 18:37 P. 2
***END***
•
TO: RANDY VOLK, CITY OF TIGARD WATER
FROM: GARY C. DEADMOND, CHIEF WATER PLANT OPERATOR
DATE: September 28, 1994
RE: CRYPTOSPORIDIUM
444•••••••4444444444444414144•414444144444444144414)4 44
WHAT IS CRYPTOSPORIDIUM?
Cryptosporidium (crypto, meaning hidden and spore, meaning seed or germ)
is a parasitic protozoon that survives well in cold water and forms a cyst
(known as oocyst) in adverse conditions. It is similar to giardia (beaver
fever), microsporidium, and cyclospora. These organisms can commonly be
found in lakes and rivers.
WHY IS IT DIFFICULT TO KEEP OUT OF WATER SUPPLIES?
The cryptosporidium cyst is very resistant to disinfection by chlorine. It has
reportedly resisted chlorine several times stronger than the normal dosage
used in water treatment plants for several hours.
WHAT IS ITS HISTORY AND HOW SERIOUS IS IT?
Cryptosporidium was first identified by a veterinary scientist in 1974 as the
organism causing gastroenteritis in a Tennessee farm girl named Regina
Gibbs. Later outbreaks of cryptosporidiosis include San Antonio (1984, 2000
ill.), Carrollton Ga. (1987, 13,000 ill), Jackson County, Ore. (1992, 15,000 ill)
and Milwaukee, Wis. (1993, 370,000 ill). In the last mentioned outbreak
several people died. People most susceptible include those infected with
AIDS and cancer patients undergoing chemotherapy. Symptoms include
diarrhea and vomiting lasting for up to a month in healthy individuals.
Some women sufferers have developed antibodies that attack their own'blood
platelets causing serious bleeding disorders. Obviously cryptosporidiosis is a
more serious disease than the better known giardiasis.
HOW CAN THE PUBLIC BE PROTECTED?
The cysts can be removed by good filtration. The outbreaks in
Carrollton, Ga. and Milwaukee, Wis. are of interest to us because both were
caused by filtration plants that allowed the cysts to pass through the
filters into the distribution system. Given that the cysts are very resistant
to disinfection by chlorine, good filtration is the primary protection against
disease outbreaks of this type. In the Carrollton, Ga. plant, for example, the
combined filter effluent met all federal turbidity standards, but because
monitoring of individual filters is not required it was not discovered that one
filter was not operating efficiently. That filter allowed enough
cryptosporidium cysts through to contaminate the finished water without
violating the federal turbidity standard.
LAKE OSWEGO FILTRATION PLANT PREVENTION STRATEGY
What is done at the Lake Oswego filtration plant to keep cryptosporidium
and other protozoa cysts out of the treated water?
• Each filter is fitted with its own turbidimeter. Each filters effluent
turbidity is prominently displayed on the filter backwash control board
and recorded in the computer. High turbidities produce an alarm. A
record of each filter's performance for the past day, week, or month can be
printed from the computer for examination.
• Plant "target" for turbidity is less than 0.1 NTU as opposed to 0.5 NTU
required by federal standards.
• "Filter to waste" operation is required when filters are not producing at
least 0.3 turbidity. This can happen during the short 'conditioning'period
just after a backwashed filter is returned to service.
• A Streaming Current Monitor controls coagulant dosage to optimize floc
size for filtration.
WHAT ELSE CAN BE DONE?
A particle counter will be purchased to monitor particle numbers and sizes in
filter effluents. Particular attention will be paid to inhibiting passage of
particles the size of protozoa cysts through the filters.
DOES LAKE OSWEGO TEST FOR CRYPTOSPORIDIUM?
Not at present. We have contacted Nielson Research in Medford about
testing for giardia and cryptosporidium. We will be required by law to test
every other month for eighteen months beginning October 1995. Each test
requires filtration of 1000 to 1800 gallons of water, mailing the filter to
Medford and a fee of$389.00. The required tests will be mainly for EPA
research purposes. Because protozoa cysts are so widely interspersed in
raw and much more so in finished water a negative test does not necessarily
prove that no organisms exist. The best protection is to maintain good
filtration techniques.
CONCLUSION
No water treatment facility can guarantee that a water borne disease
outbreak will not occur. What it can do is do the best job possible by keeping
abreast of current technology, maintaining operator training at a high level,
and keeping equipment operating at peak efficiency. The staff at the Lake
Oswego Water Drinking Water Plant is dedicated to doing just that.
AUGUST 1994
WATER MONTHLY REPORT
Revenues/Expenditures:
Month of August Year to Date Prior Yr. to Date %of Budget
Revenues:
Water Sales $477,535.63 $851,339.81 $635,610.62
Meter Sales 35,285.00 70,640.00 121,270.93
Developer Fees 11,199.72 11,199.72 1,316.66
Other Income 5,241.35 13,128.17 31,515.53
Total Revenue $529,261.70 $943,307.70 $789,713.74 25%
Expenditures:
Personal Services $59,715.00 $123,466.00 $139,761.45
Material Services 248,304.13 263,463.85 416,871.67
Capital Outlay 27,319.67 54,256.44 60,581.92
Cap. Proj. Res. Fund 00.00 00.00 300,000.00
*Total Expends. $335,338.80 $441,186.29 $917,215.04 12%
SDC Fund: $37,465.00 $81,728.00 N/A 21%
* City accounting system is on a cash basis
Meter Installations: 5/8" x 3/4" 1" 1 1/2" 2" Total
Durham 5 3 0 1 9
King City 0 0 0 0 0
Unincorporated Area 15 4 0 0 19
City of Tigard 15 8 0 0
Total for August 51
Work Accomplished:
Durham
• Water Division personnel extended two 3/4-inch water services behind a
proposed new sidewalk. Water staff also responded to a few requests to
check for water leaks at the customers service due to high consumption.
• Water Division personnel installed a two inch water service and meter for
Durham Park.
King City
• Water Division personnel replaced three 5/8" x 3/4" water meters that
were damaged or stuck. Also, Water staff responded to a few requests
to check routine pressure problems and determine if water leaks were on
• the customer's side of meter, on our side of the meter or whether a water
leak actually exists.
Unincorporated Area
• Water Division personnel repaired two water services that were damaged
or needed to be relocated to the proper location. Also, Water staff
replaced.two 5/8" x 3/4" water meters that where malfunctioning and
adjusted the water pressure at a few individual homes throughout the
service area.
• Water Division personnel installed nine 3/4-inch water services for
Chardonnay Estates, a single family residential development located at the
terminus of SW Chardonnay Avenue, south of SW Bull Mountain Road.
• Water Division personnel installed 8 -3/4" water services and one water
sampling station for Crest Ridge, a single family residential development
located at the north end of SW Chardonnay Avenue just south of SW Bull
Mountain Road.
• Water Division personnel continued with adjusting valve boxes along SW
Bull Mountain Road for the Bull Mountain Road Bike and_Pedestrian Path
improvement project.
City of Tigard
• Water Division personnel installed 25 - 3/4" water services and one water
sampling station for Rose Meadows, a single family residential
development, located between SW Fern Street and SW Walnut Street.
• Water Division personnel repaired the 24-inch water transmission main on
SW Tiedeman Street,just north of SW Walnut Street. A leak developed
from the failure of a stainless steel band that was installed to seal a leak
when a boring machine for cable TV struck the water main ten years
earlier.
• Water Division personnel installed 29 - 3/4" water services and one water
sample station for Renaissance Summit. This development is located at
SW 109th Avenue and SW Naeve Road.
• Water Division personnel installed 34- 3/4" water services and one water
sample station for MorningStar Phase 1 and 2. This development is
located south of the terminus of SW 132nd Avenue, south of the ~ --
Benchview subdivision.
•
• Water Division personnel replaced a fire hydrant that was damaged on SW
Morning Hill Drive and SW 135th Avenue.
• Water Division personnel replaced ten 3/4-inch pressure regulators, eleven
5/8" x 3/4" water meters that were damaged or malfunctioning. Also,
Water staff repaired five 3/4-inch water services that were damaged.
• Water Division personnel replaced and upgraded the existing air release
valves located on SW 121st Avenue and SW Rose Vista Drive.
Water Consumption and Loss:
Total 100 cubic feet of water purchased or produced 378,736 ccf
Plus amount of water from storage during August and
consumption not billed in July 147,000 ccf
Total 100 cubic feet of water billed <398,521 ccf>
Net amount of water in storage < 4,045 ccf>
Amount of water consumed but not yet billed <103.000 ccf5
Total Water loss 20,170 ccf 3.84%
Status Report:
MSA (Murray Smith and Associates) to released the first draft of the Water Supply
Update study in mid August.
Phase II of the SCADA (Supervisory Control and Data Acquisition) system is 80%
complete. Phase II included the purchase of a new software program, "Wonderware
InTouch", that provides an graphical interface between the raw data that is collected
and the operator. The Wonderware InTouch program will not replace the existing
SCADA program, but provides an enhancement to the data gathering and
manipulation capabilities of the SCADA program. The most important feature of the
Wonderware InTouch program is its ability to provide real time and historical
trending,which we did not have with the original purchase of the SCADA system.
• Training of Water personnel on the usage of the Wonderware InTouch software was
completed mid August by factory personnel.
• RTU's (Remote Transmitting Units) were installed, but a couple. of the RTU's had
malfunctioning computer boards that had to be sent to the manufacturer to be
reprogrammed or replaced. Completion of Phase II of the SCADA system is expected
to occur in September or early October.
Complaint Summary:
During the last week of August, we have started to receive a few complaints regarding
taste and odor problems with the Lake Oswego supply. This is earlier than usual, but
due to the low river conditions and warmer river temperature, algae growth has
developed. The Lake Oswego Treatment plant has started to use activated charcoal in
the treatment process to control the taste and odor problem.
Operational Changes:
John Acker was named Property Manager for the new Property Division that includes
grounds, streets and building maintenance.
At the end of August, Fleet Maintenance began to move its operations into the Water
Building. One of the reasons for this move is so that Fleet Maintenance can utilize
the two bays of the shop/mechanic area at the north end of the building which are
more modem than the existing shops at Maintenance Services.
TIGARD WATER DISTRICT
INCOME STATEMENT & BALANCE SHEET
As of September 30, 1994
INCOME STATEMENT
Accounts I I Prior Y -T-D l I Monthly I I Y-T- D I
REVENUES
1%PY Water Sales Revenue 0.00
Interest Earned 104.00 104.00
Recovered Expenditures 0.00
Total Revenues 104.00 0.00 104.00
EXPENDITURES
Professional Services 0.00
Contractual Services 0.00
Office Supplies&Expenses 0.00
Advertising& Elections 0.00
Dues & Subscriptions 3,326.00 3,326.00
Insurance 487.05 487.05
Total Expenditures 3,813.05 0.00 3,813.05
BALANCE SHEET
ASSETS
Cash& Investments 26,960.51 26,960.51
Net Fixed Assets 0.00
Total Assets 26,960.51 0.00 26,960.51
LIABILITIES & FUND BALANCE
Liabilities
Accounts Payable 0.00
Due Other Funds 0.00
Total Liabilities 0.00 0.00 0.00
Fund Balance
Fund Balance 30,669.56 0.00 . • _30,669.56
Excess of Revenues/(Expenditures) (3,709.05) 0.00 (3,709.05)
Total Fund Balance 26,960.51 0.00 26,960.51
Total Liabilities and Fund Balance 26,960.51 0.00 26,960.51
g:\Excel\TVVD\Monthly\94-5isbs.xls
EXECUTIVE SUMMARY
General
This document is an update of a water supply plan prepared for the Tigard Water
District in 1990. This update includes an evaluation of seven long term water supply
alternatives. These alternatives are:
1. City of Lake Oswego Supply (Clackamas River)
2. City of Portland Supply (Bull Run River and Columbia River Well Fields)
3. City of Tualatin Supply (Bull Run River and Columbia River Well Fields)
4. Hillsboro-Forest Grove-Beaverton Joint Water Commission Supply
(Tualatin and Trask Rivers)
5. South Fork Water Board Supply (Clackamas River)._,
6. Tualatin Valley Water District Supply (Bull RunRiver and Columbia
River Well Fields)
7. Willamette River Supply above Wilsonville.. `<:.
Water Demand Estimates
Estimated water demands for the water service area'were developed using City of
Tigard population estimates for the years 2000, 2010, aixd:2020. Also developed were
d:
estimates of anticipated 1994 demands ana` :994 population estimate. Tigard's year
1990 population of 30,800 is included as abase li. year. Population estimates and
water demand estimates are summarized in fbe following table.
Summary of Estf'mated Population and Water Demands
ISSISMOSE
1990 30,800 4.6 10.6
1994 33,500 5.0 11.5
2000 39,700 6.0 13.8
2010 45,500 6.8 15.7
2020 51,700 7.8 17.9
93-0292.101 E-1
•
Evaluation of Alternatives
Discussions were held with purveyors of each developed water source. Of those
providers under consideration, only the City of Lake Oswego and the City of Portland
provide Tigard the potential for a long range supply of water from an existing supply
system. A long range supply of water could be obtained from the Willamette River
through a City-owned or a jointly owned supply system. These four alternatives were
evaluated under a set of eight criteria and ranked in comparison each other. The
eight criteria are:
I. Opportunity for City Ownership of Supply System
2. Water Supply Agreements and Contract Provisions
3. Required Improvements and Estimated Project Costs
4. Estimated Cost of Water
5. Water Rights
6. Water Quality
7. Supply Implementation Timing
8. Certainty of Supply
A tabulation of the evaluation and ranking result*:* presented inthe following table.
Summary of Evaluation Criteria and Tabulation of Rankings
---------------
arikin Criteria
•
Take Cortland Will ett v ::St il ly .
Oswego
'iYgaxd' Regignal:
Opportunity for City Own rshiP< 1 2 1 1
of Supply System
Water Supply Agreements and:<` 1 2 1 1
Contract Provisions
Required Improvements arty* 2 1 4 3
Estimated Project Costs
Estimated Cost of Water 1 ( 1 3 2
Water Rights ( 1 ( 2 4 2
IWater Quality 1 ( 1 1 1
Supply Implementation Timing ( 2 1 4 3
ICertainty of Supply ( 1 2 4 3
Total Points I 10 I 12 I 22 I 16
4 '
Final Ranking 1 ( 2 + 4 ' 3 - I
93-0292.101 E-2
.3!
t:xi ,
'=
;F,
:ra
Recommendations =--;
-A.
The recommended alternative for Tigard's long term water supply is the Lake Oswego
supply alternative. Tigard should proceed immediately with the steps needed to 7,...
develop this supply. Interim water supplies are needed to supplement existing ;,
supplies as the recommended supply alternative is developed. Discussions should be
held with Portland and the Tualatin Valley Water District for these interim water ,}'�
supply needs. .
It is recommended that Tigard proceed with the following items. Items 1 through 11
should proceed immediately and concurrently and be concluded in approximately one
year. Items 12 and 13 should proceed immediately and continue indefinitely.
1. Formally adopt this plan and its recommendations
2. Incorporate this plan into the City's Comprehensive Pla <_i:::; ,,
3. Proceed with negotiations with the City of lake Oswego to develop a long term
supply of water. The negotiations should cons dei institutional, financial,
operational and other relevant matters. r
4. Develop and execute agreements wit .e;;Oswego upon successful completion :.a
of negotiations.
5. Prepare a comprehensive;water'system:master plan update. The plan will
identify those system iuyptoverr ts..;regt fired for implementation of the Lake r,
Oswego supply as well asterna system improvement requirements. Data
from this plan will k used lathe financial plan.
6. Prepare a fnan aa1 plan + r the City water system considering the financial
requirements o ';',.=-
..:.: ::::.: ,
t�e:Lake Oswego supply, interim water supply costs from
Portland and the T`u a,t, Valley Water District until completion of the Lake
Oswego supply expa. on, internal system capital improvement requirements, ?_.
operations and maintenance costs, and other items as appropriate. ="
7. Proceed with the recommendations of the financial plan including authorization
for and sale of bonds and water rate adjustments.
8. Review existing operational conditions with Lake Oswego to establish r,,
arrangements that allow Tigard and Lake Oswego to maximize the available
water supply prior to the completion of the proposed supply expansion.
9. Review with Portland Tigard's interim water supply needs during the period =
that the recommended long term supply alternative is being developed. These
discussions should include: ,
93-0292.101 E-3
A. An immediate review of transmission piping configuration and
capacities to confirm the actual capacity of the Bradley Corner
connection.
B. A review of water use patterns and system operations to provide
the most economical supply of water.
C. A further review of the impacts on anticipated water costs from
variations in system operations.
D. A review of the existing agreement for water service. This review
should include a discussion of the potential cost impacts of an
interim supply arrangement and the potential benefit to Portland
for Tigard's ultimate reduction in Portland water use.
' 10. Review with the Tualatin Valley Water District Tigard': interim water supply
needs. The discussions should include:
A. Review the potential for an agreement for watef service that
provides Tigard the opportunitto purchase surplus water to
supplement existing supplies`wh ile>the recommended long term
supply alternative is developed.
l ` ::::..
B. Determine the need for;``u 'provemenis to provide an adequate
interim water supply while te`T:ake Oswego supply is developed.
C. Review potential<connection.configurations of this interim supply
in addition to..pressure., flow, supply and the cost of service
associated with_:s zm an arrangement.
D. Reviewwtl e'epsts` ssociated with the development of this interim
:supply andssess its further consideration.
11. Maximize the use aidcapacity of City of Tigard ground water well supplies.
These supplies are limited, however, additional well capacity may be available
to supplement existing supplies as the recommended long term supply
alternative is developed.
12. Participate in the current regional water supply planning efforts, the Phase 2
Regional Water Supply Plan, and in the subsequent implementation of that
plan and other plans that may provide for Tigard's water supply needs beyond
the year 2020.
13. Periodically review the findings and conclusions of this supply plan update to
provide guidance for the supply of water to the City beyond the year 2020.
•
93-0292.101 E-4
EXECUTIVE SUMMARY
General
This document is an update of a water supply plan prepared for the Tigard Water
District in 1990. This update includes an evaluation of seven long term water supply
alternatives. These alternatives are:
1. City of Lake Oswego Supply (Clackamas River)
2. City of Portland Supply (Bull Run River and Columbia River Well Fields)
3. City of Tualatin Supply (Bull Run River and Columbia River Well Fields)
4. Hillsboro-Forest Grove-Beaverton Joint Water Commission Supply
(Tualatin and Trask Rivers)
5. South Fork Water Board Supply (Clackamas Riven):::::..
6. Tualatin Valley Water District Supply (Bull Run and Columbia
River Well Fields)
7. Willamette River Supply above Wilsonville_
Water Demand Estimates
Estimated water demands for the water service area were developed using City of
Tigard population estimates for the years 2000, 2010,•144,2020. Also developed were
estimates of anticipated 1994 demands and a_1994 population estimate. Tigard's year
1990 population of 30,800 is included as a base>liC�`.e year. Population estimates and
water demand estimates are summarized in the following table.
Summary of Esd hated Population and Water Demands
...:�...nv::::;:.v:•::n....:.:i:.?.4::;,.:.: : .:�.?:J:\:v?::::ti•?:•?Y:;.:�:•:ti•:;iJ:ii:4t?•j::�:•
iv:\'::{:::i:ti::ti'::;;�i?'4?iii::::::i iiiii:':•:'''
:1: •',•iii:i'•::�:':?:::•?
kvn
•
1990 30,800 4.6 10.6
1994 33,500 5.0 11.5
2000 39,700 6.0 13.8
2010 45,500 6.8 15.7
2020 51,700 7.8 17.9
93-0292.101 E-1
Evaluation of Alternatives
Discussions were held with purveyors of each developed water source. Of those
providers under consideration, only the City of Lake Oswego and the City of Portland
provide Tigard the potential for a long range supply of water from an existing supply
system. A long range supply of water could be obtained from the Willamette River
through a City-owned or a jointly owned supply system. These four alternatives were
evaluated under a set of eight criteria and ranked in comparison each other. The
eight criteria are:
L Opportunity for City Ownership of Supply System
2. Water Supply Agreements and Contract Provisions
3. Required Improvements and Estimated Project Costs
4. Estimated Cost of Water
5. Water Rights
6. Water Quality
7. Supply Implementation Timing
8. Certainty of Supply
A tabulation of the evaluation and ranking results4 presented inthe following table.
Summary of Evaluation Criteria and Tabulation of Rankings
;<::Rankin ;Criteria::
W
v
d til�rxte x` u
...............
'IY Re onai .:
Opportunity for City Ownership ::::. :;. 2 1 1
of Supply System
Water Supply Agreements and • 1 2 1 1
Contract Provisions :.
Required Improvements and" 2 1 4 3
Estimated Project Costs
Estimated Cost of Water 1 1 3 2
Water Rights 1 2 4 2
Water Quality 1 1 1 1
Supply Implementation Timing 2 1 4 3
Certainty of Supply ` 1 2 4 3
I Total Points I 10 I 12 I 22 I 16- I
Final Ranking 1 y 2 4 f 3 f
93-0292.101 E-2
'7,i'"';''' i
p9�/
•yr
Erb
Recommendations '',z
The recommended alternative for Tigard's long term water supply is the Lake Oswego
supply alternative. Tigard should proceed immediately with the steps needed to rr'
develop this supply. Interim water supplies are needed to supplement existing §r•
supplies as the recommended supply alternative is developed. Discussions should be 0
held with Portland and the Tualatin Valley Water District for these interim water
3,
supply needs.
It is recommended that Tigard proceed with the following items. Items 1 through 11
should proceed immediately and concurrently and be concluded in approximately one ','`
year. Items 12 and 13 should proceed immediately and continue indefinitely. `•.
1. Formally adopt this plan and its recommendations. ;;::<` > :�,
b,,,
2. Incorporate this plan into the City's Comprehensive Plane;:::;::.. '..
-i,-
63. Proceed with negotiations with the CityofLake Oswego to cdevelo a longterm
• ,
supply of water. The negotiations should consider'institutional, financial,
operational and other relevant matters.
4. Develop and execute agreements with< e,Oswego upon successful completion
'of negotiations. -
-
AS&
5. Prepare a com rehensive;wateriis stem'masterplan u ,,V_,
P P y plate. The plan will
-. ::,-
identifythose system infi�'.rover 'er ts::re,` ired for implementation of the Lake
Oswego supply as well as' terrrnal•system improvement requirements. Data k _
from this plan wilt beused` i€ e financial plan. #3
-
6. Prepare a finarl" plarif the City water system considering the financial
t
requirements of t > ,akeflswego supply, interim water supply costs from
Portland and the T t at,n Valley Water District until completion of the Lake ,,,,1
Oswego supply expariion, internal system capital improvement requirements, k
operations and maintenance costs, and other items as appropriate. 'r'
s=
7. Proceed with the recommendations of the financial plan including authorization i
for and sale of bonds and water rate adjustments.
8. Review existing operational conditions with Lake Oswego to establish
arrangements that allow Tigard and Lake Oswego to maximize the available ''_
water supply prior to the completion of the proposed supply expansion.
9. Review with Portland Tigard's interim water supply needs during the period a`
that the recommended long term supply alternative is being developed. These
discussions should include: . ,-
93-0292.101 E-3 i`±
•
A. An immediate review of transmission piping configuration and
capacities to confirm the actual capacity of the Bradley Corner
connection.
B. A review of water use patterns and system operations to provide
the most economical supply of water.
C. A further review of the impacts on anticipated water costs from
variations in system operations.
D. A review of the existing agreement for water service. This review
should include a discussion of the potential cost impacts of an
interim supply arrangement and the potential benefit to Portland
for Tigard's ultimate reduction in Portland water use.
• 10. Review with the Tualatin Valley Water District Tigard` ;.:interim water supply
needs. The discussions should include:
A. Review the potential for an agreement for waterservice that
provides Tigard the opportunity;to ;urchase siirplus water to
supplement existing suppliessw e>ti e recommended long term
supply alternative is developed. <<< >.:,.
B. Determine the need foru` pxovemernts to provide an adequate
interim water supply while the T ake Oswego supply is developed.
C. Review potential connection configurations of this interim supply
in addition t4;pres&.ure, flow, supply and the cost of service
associated withe such<an arrangement.
D. Review the'costs associated with the development of this interim
g ply
anttipseSs its further consideration.
• 11. Maximize the use adreapacity of City of Tigard ground water well supplies.
These supplies are limted, however, additional well capacity may be available
to supplement existing supplies as the recommended long term supply
alternative is developed.
12. Participate in the current regional water supply planning efforts, the Phase 2
Regional Water Supply Plan, and in the subsequent implementation of that
plan and other plans that may provide for Tigard's water supply needs beyond
the year 2020.
13. Periodically review the findings and conclusions of this supply plan update to
provide guidance for the supply of water to the City beyond the year 2020.
93-0292.101 E-4