08/14/2019 - Minutes Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
MEETING DATE: Wednesday, August 14, 2019, 5:30 p.m.
MEETING LOCATION: Tigard Public Works Building
8777 SW Burnham Street
Tigard, OR 97223
Members Present:
Vice Chair Ken Henschel Representing the Tigard Water District (TWD)
Heidi Lueb Representing the City of Tigard
Members Absent:
Chair Keith Jehnke Representing the City of Durham
City of Tigard Staff Present:
John Goodrich Executive Manager
Sue Billings WAB Recorder
1. Call to Order, Roll Call, and Introductions
Ken Henschel called the meeting to order at 5:30 p.m.
2. Public Comments
There were no public comments.
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Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
3. Water Supply Update
Mr. Goodrich reported:
Average water use for the month of July was 8.9 million gallons per day
(mgd). This consumption water usage is low for this time of year, compared
to this time last year (10.4 mgd). Last year there were 17 days where
temperatures were above 90 degrees and water use was above 10 mgd. This
year for the month of July, there were only three days above 90, and one day
above 10 mgd.
For the month of July, 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 July 31 indicates a pH of 7.83 with 1.02 mg/L
chlorine residual, 31 mg/L alkalinity, and water temperature of 20.6
centigrade (69 degrees F).
For the month of July, staff received two water quality complaints related to
chlorinated taste/odor.
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 960 cubic
feet per second (cfs). These flows are above our conditional use parameters for
July and August. Water temperature is 72 degrees F, with a pH of 7.5, and
turbidity average at 1.3 NTU. These parameters appear seasonally normal. Last
year during this same time, flows were at 800 cfs.
4. WAB At Large Member Applicants —John Goodrich
• The city has closed the "on-line" applications for the two "At-large member"
positions for the WAB. There are currently two applicants, both within the
City of Tigard boundary.
• Mr. Goodrich will call applicants to schedule interviews at the October WAB
meeting.
• Suggested to extend the application time for "At-large member".
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Water Advisory Board (WAB) Minutes
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SERVING TIGARD WATER SERVICE AREA
5. Information Items
• An email will be sent out tomorrow morning (8/9/19) to WAB members
regarding an administrative rule amendment for water SDC's and meter
fees.
• A draft of revised WAB by laws will be emailed for review to WAB
members.
6. Non-Agenda Items
There were no non-agenda items.
7. Next Meeting
October 9, 2019, at 5:30 p.m.
Public Works 10 mil, 8777 Burnham Street, Tigard, Oregon
8. Adjournment
At 6:00 p.m.
Ken Henschel, WAB Vice Chair Sue Billings, WAB Recorder
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