10/09/2019 - Minutes Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
MEETING DATE: Wednesday, October 9, 2019, 5:30 p.m.
MEETING LOCATION: Tigard Public Works Building
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8777 SW Burnham Street
Tigard, OR 97223
Members Present:
Commissioner Keith Jehnke Representing the City of Durham
Commissioner Ken Henschel Representing the Tigard Water District (TWD)
Councilor Heidi Lueb Representing the City of Tigard
Members Absent:
None
City of Tigard Staff Present:
John Goodrich Executive Manager
Sue Billings WAB Recorder
1. Call to Order, Roll Call, and Introductions
Commissioner Keith Jehnke called the meeting to order at 5:30 p.m.
2. Approval of Minutes —June 12, 2019 and August 14, 2019
Councilor Lueb moved to approve the June 12, 2019, and August 14, 2019
minutes. Commissioner Henschel seconded the motion. The motion passed by
unanimous vole of Lhe commissioners present, with Commissioners Henschel,
Jehnke, and Councilor Lueb voting yes.
3. Public Comments
There were no public comments.
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Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
4. Water Supply Update
Mr. Goodrich reported:
Average water use for the month of September was 6.2 million gallons per day
(mgd). This consumption water usage is lower compared to this time last year (7.2
mgd). The month saw heavy rainfall (3.85 inches for September in the Portland
area; 2.5 tunes normal 1.47 inches) which may account for the lower consutuption
and irrigation use.
For the month of September, there was no change in aquifer storage recovery
(ASR) conditions. Stored water for ASR-1 is approximately 53 days of supply
based on 1,000 gallons per minute (gpm) recovery rates. ASR-2 has 81 days of
supply based on 1,500 gpm recovery rates.
Bonita Pump Station data for September 29 indicates a pH of 7.81 with 1.0 mg/L
chlorine residual, 25 mg/L alkalinity, and water temperature of 13.2 centigrade (55
degrees F).
Water treatment plant operations continue to be normal. Ozone is fully functional
and operating without any problems reported by Lake Oswego Tigard Water
Treatment Plant staff.
Clackamas River USGS information reports that the river is flowing at 1,200 cubic
feet per second (cfs). These flows are above our conditional use parameters for
September. Water temperature is 54 degrees F, with a pH of 7.5, and turbidity
average at 2.0 NTU. Last year during this same time, flows were at 750 to 800 cfs.
Staff received 5 water quality complaints; one relating to turbidity due to TVF&R
operating a fire hydrant nearby; two with low chlorine residuals prior to flushing;
and two regarding taste/color that were follow-up phone calls with no action by
the Cily.
5. WAB AT Large Member Interview
• Candidate Jennifer Joe, was interviewed for one of the two WAB At-Large
Member position.
• The WAB members will continue to receive application for the At-Large
Member positions.
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Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
6. Information Items
• Mr. Goodrich shared that the area of SW 133rd Ave and SW Mountain Ridge
Ct, was recently flushed, due to a water quality complaint of the smell and taste
of chlorine in the water.
PRAB members discussed:
o Earthquake preparedness of various water tanks and pipes throughout
the City of Tigard.
o Fire Hydrant replacement.
o Water rate increases, and a water rate study.
■ Ken Henschel moved to delay the rate increase implementation
until July 1, 2020, and Heidi Lueb seconded the motion. The
motion passed with a unanimous vote of the commissioners and
councilor present, with Commissioners Henschel,Jehnke and
Councilor Lueb voting yes.
o Water Watch is requesting an extension on the water rights on the
Clackamas River.
7. Non-Agenda Items
There were no non-agenda items.
8. Next Meeting
December 11, 2019, at 5:30 p.m.
Public Works 10 mil, 8777 Burnham Street, Tigard, Oregon
9. Adjournment
At 6:40 p.m., Commissioner Ken Henschel moved to adjourn the meeting.
Commissioner Keith Jehnke seconded the motion. The meeting adjourned by
unanimous vote of the commissioners and councilor present, with Commissioners
Henschel,Jehnke and Councilor Lueb voting yes.
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Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
cith J nke, Mi Chair Sue Billings, WAB Recorder
Date: i�� Date: — 17
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