CC 2017-09-12_09i Replacement of VFD_Lift Station No 1
MEMORANDUM
TO: CITY COUNCIL
FROM: SHANE TAYLOR, UTILITIES MANAGER
SUBJECT: CONSIDERATION OF AN APPROPRIATION OF FUNDS TO REPLACE
A VARIABLE FREQUENCY DRIVE AT LIFT STATION NO. 1
DATE: SEPTEMBER 12, 2017
RECOMMENDATION:
It is recommended the City Council approve an appropriation of $15,000 from the Sewer
Fund balance to replace a Variable Frequency Drive (VFD) at Sewer Lift Station No. 1.
SUMMARY OF ACTION:
Approve funds to replace a Variable Frequency Drive at Sewer Lift Station No. 1.
IMPACT ON FINANCIAL AND PERSONNEL RESOURCES:
The replacement VFD which was not budgeted in FY 2017/18 will deplete the Sewer
Fund Balance of $1,640,499.25 by $15,000.00.
BACKGROUND:
Sewer Lift Station No. 1 was rebuilt in 2007. As part of the rebuild, new pumps/motors
were installed powered by variable frequency drives to improve efficiency and to reduce
energy use. There are two (2) pumps and two (2) VFD’s. Earlier this year one VFD
failed and was replaced with a new spare drive already in our inventory. Since both
drives were the same age, staff believes the best practice is to replace the other VFD
before it fails.
ANALYSIS OF ISSUES:
Sewer Lift Station No. 1 is the City’s largest sewer lift station. It pumps approximately
200,000 gallons/day of raw sewage from Oak Park/West Branch Street up to the top of
West Branch Street by the theater and then under Highway 101, ending up in a
manhole on El Camino Real. A failure of this station would cause an overflow into
Meadow Creek.
ALTERNATIVES:
1. Appropriate $15,000 from the existing FY 2017/18 budget of $25,000 to replace
the drive;
2. Do not approve the appropriation; or
3. Provide other direction to staff.
Item 9.i. - Page 1
CITY COUNCIL
CONSIDERATION OF AN APPROPRIATION OF FUNDS TO REPLACE A VARIABLE
FREQUENCY DRIVE AT LIFT STATION NO. 1
SEPTEMBER 12, 2017
PAGE 2
ADVANTAGES:
The lift station will provide reliable service.
DISADVANTAGES:
The purchase and installation will reduce the sewer fund balance by $15,000.
ENVIRONMENTAL REVIEW:
No environmental review is required for this item.
PUBLIC NOTIFICATION AND COMMENTS:
The Agenda was posted at City Hall and on the City’s website in accordance with
Government Code Section 54954.2.
Attachment:
1. Proposal from Autosys, Inc.
Item 9.i. - Page 2
ATTACHMENT 1
Item 9.i. - Page 3
THIS PAGE INTENTIONALLY LEFT BLANK
Item 9.i. - Page 4