5.7 SR 07-12-1999'ity of
ElkRiver
TO:
FROM:
DATE:
MEMORANDUM
Pat Klaers
City Administrator
Darrell Mack od",
W WTF Superintendent
July 7, 1999
Item 5.7.
SUBJECT: Emergency Power Supply For Lift Stations
After meeting with utilities manager Bryan Adams, it appears that in a major power
outage the utilities generating facility will be able to supply power to the wastewater
treatment facility. The generating facility would not be able to supply power to any
lift stations except on a four hour rotation, which is not often enough to prevent
sewage backups. To keep the collection system from backing into homes we need four
additional generators. Three generators would be set up at stations that cannot be
down for any length of time and one generator would be used to keep the rest of our
stations pumped down. The following quotes were received with Ziegler Power
Systems being the lowest:
Ziegler Power Systems $57,430 Used
(year of used units)
50kw 1995
(2)30kw 1996
20kw 1997
Katolight $59,300 New
Cummins North Central $64,118.40 New
Long Lake Tractor $90,210 New
(Price does not include sales tax)
Even with Ziegler quoting used generators, I feel they are the best buy for three
reasons:
1) they have been checked out and repairs were made if they were
needed,
2) they are set up for all 3 voltages that we have in Elk River, which
makes them a lot more versatile and can be used at other locations.
3) the generator we have is 23 years old, only has 135 hours on it, and
most of those are from exercising it. I believe spending the extra
money on a new generator would be a waste.
13065 Orono Parkway 0 P.O. Box 490 0 Elk River, MN 55330 0 TDD & Phone: (612) 441-7420 0 Fax: (612) 441-7425
The other generators that were quoted can be wired for dual voltages (120/240 and
120/208), but at an additional cost of approximately $2,000.00 each. Also, it is my
understanding that Elk River Utilities wants to change some of our lift stations over
to 120/208 voltage so if that happens we will have to have three of the four
generators wired for dual voltages.
Because no single generator is over $25,000, we do not have to go through the bid
process. Therefore, it is my recommendation to purchase the generators quoted by
Ziegler Power Systems.
wwtp\quotegen.doc