HomeMy WebLinkAboutCity Council Meeting - Council Workshop - Agenda - 09/04/2001 •
KENT
W A S H I N G T 0 N COUNCIL WORKSHOP
CITY COUNCIL
Leona Orr September 4, 2001
Council President
220 Fourth Ave.S.
Kent,WA 98032-5895
The Council Workshop will be held in Chambers East in Kent City Hall at 5:00 PM
Phone: 253-856-5712 on Tuesday, September 4, 2001.
Fax:253-856-6712
Council Members: President Leona Orr, Tom Brotherton, Tim Clark,
Connie Epperly, Judy Woods, Greg Worthing, Rico Yingling
Speaker Time
1. Drought Update Public Works Staff 15 min.
2. Permit Center Activity Status Community Development 15 min.
Staff
The Council Workshop meets each month on the first and third Tuesdays at 5:OOPM in
Chambers East unless otherwise noted. For agenda information please call Jackie
Bicknell at (253) 856-5712.
ANY PERSON REQUIRING A DISABILITY ACCOMMODATION SHOULD
CONTACT THE CITY CLERK'S OFFICE AT (253) 856-5725 IN ADVANCE.
FOR TDD RELAY SERVICE, CALL THE WASHINGTON
TELECOMMUNICATIONS RELAY SERVICE AT 1-800-833-6388.
City of Kent
Water System Status Report
September 4, 2001
This report is an update on the status of the Kent Water System and the impacts of the
winter drought that we have been recovering from. The situation has the potential to
change on a weekly basis, however this report is intended to give the reader an idea of the
current status of the Water System, as well as identify for them any trends or changes that
have been developing recently(or are anticipated to occur).
• Conservation- Kent customers remain in a restricted water use status, primarily that
of alternate day irrigation cycles. There is an attached chart that shows the impacts
that our conservation and the weather have had on our water system demands for the
past 8 months. The months of July and August have shown an average decrease in
water use of approximately 9%to 11% from what we have seen in past years for
those two months.
• Weather- although a dryer than normal summer and fall was forecast for this area,
Kent has actually experienced more rainfall (measured at Clark Springs) in the three
months since May than we normally receive, with a high of 2.5 inches in a 3 day
period during August, reducing water usage and adding water to our aquifers.
Temperatures this summer have been somewhat cooler than normal, with no extended
hot, dry periods to drive up water usage. NOAA is forecasting a cooler and wetter
period now, however they expect the "moisture deficits to likely persist through
November". Longer-range forecasts predict somewhat dryer and warmer conditions
to persist through the coming winter and possibly summer for the Northwest,
although nothing indicates a drought as serious as last winter.
• Aquifer Levels-with the lower summer demands caused by conservation and the
cooler, wetter weather, the aquifer levels of Kent's sources have slowly recovered
from the effects of the winter drought. Some have improved to the extent that they are
at or above the levels recorded for last year at this time, while others are still
recovering. Shallow aquifers are often influenced within weeks or even days by
heavy rainfall, while deeper aquifers may take several years to show the same effects.
Overall, our aquifer levels have improved significantly, from where we were in the
winter months of this year.
• Supply- the two replacement wells that were drilled and completed as emergency
projects, one at Kent Springs and one at the 212th Treatment Plant, are operational.
They have both been shown to meet or exceed our expectations for water production,
and also reliability. Additional testing this year and next will allow us to determine if
there is a significant improvement in the net yield from each site, improving our
ability to meet the peaking demands of next summer. There is an attached Supply
Forecast that outlines the projected reliable supply available from each of Kent's
i sources presently as well as in the future.
• Interties- with the Seattle agreement in place, and the construction of the Soos Creek
Sewer and Water District intertie completed, up to 2 %million gallons of water per
day is available from the Everett water system through Seattle/Highline Water
District/Soos Creek Sewer&WaterDistrict as we need it, through the end of 2001.
• Rock Creek Resource Protection Plan- staff is closely monitoring stream flows at
Rock Creek, and so far this summer have not needed to augment flows as outlined in
the Rock Creek Resource Protection Plan. However,we may need to augment stream
flows beginning in mid-September by as much as 2 million gallons per day(3 CFS),
during the spawning season. It is expected that there is adequate water supply
available to meet demands, with additional supply available if needed from our
emergency interties, to make up the supply deficit created by the stream augmentation
program at Rock Creek.
• Future supply
• Soos Creek Well # 2-a second well is planned for the Soos Creek well site (at
118th and Kent-Kangley) this winter, to allow artificial recharge of the aquifer
during winter months, as well as the ability to withdraw as much as 400 gpm
additional supply from this site during the summer.
• Second Supply Pipeline(P5)-the upper portion of the pipeline (18 miles) is
expected to be completed by July 2002. This will bring Tacoma water to within
less than a mile of Kent Springs/Kent Springs Transmission Main. A small
intertie with Covington Water District is planned on Kent Kangley to allow the
use of up to 2 MGD from Tacoma, through Covington, to Kent as soon as the
upper section of P5 is completed. Also, construction of a small transmission main
is being planned jointly with the Covington Water District, in order to make use
of the full 5 million gallons per day available for purchase from Tacoma for both
Kent and Covington as an interim supply.
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2001 Kent Water Supply Forecast
9/4/01
Source 7/1 Forecast 8/10/01 4,6 9/1 to 11/30 4,6
Clark Springs 1,900 gpm ' 1,900 gpm 1,000 gpm 2
Kent Springs 1,200 gpm 3 1,600 gpm 2,400 gpm
Armstrong Springs 900 gpm 900 gpm 450 gpm
Soos Creek Well 550 gpm 550 gpm 550 gpm
East Hill Well 1,300 gpm 5 1,300 gpm 1,300 gpm
Garrison Creek 300 gpm 300 gpm 300 gpm
212th Treatment Plant 1,400 gpm 2,500 gpm 2,100 gpm
208th St. Well 900 gpm 900 gpm 900 gpm
O'Brien Well 243 gpm 243 gpm 243 gpm
Total Production 8,693 gpm 10,193 gpm 9,243 gpm
Forecasted Kent Peak Daily Demand 17.24 MGD 17.24 MGD 13.0 MGD
Total Kent Peak Daily Production 12.42 MGD 14.56 MGD 13.2 MGD
(Kent) Production Supply Shortfall 4.82 MGD 2.68MGD extra .2 MGD
Soos Creek Intertie 1.1 MGD 1.1 MGD 1.1 MGD
Highline Intertie 1.4 MGD 1.4 MGD 1.4 MGD
Renton Intertie 2.5 MGD 2.5 MGD 1.5 MGD
Intertie totals 5.0 MGD 5.0 MGD 4.0 MGD
Total Water Supply(Extra) .18 MGD (E) 2.32 MGD (E) 4.2 MGD (E)
1 CFS Rock Creek augmentation
2 Reduced supply due to 2.0 MGD (3 CFS) Rock Creek Augmentation (9/15 start)
3 Reduced supply due to lower summer aquifers
4 Reduced supply due to periodically resting sources to extend pumping
5 Based on 1,750 gpm 18 hours a day pumping to extend pumping through 11/30
6 Completed Emergency improvements for reliable water supply
P:\Water\WRC\Water\Forecast Doc4 2001.xls