HomeMy WebLinkAboutAgenda Report - April 7, 2010 D-05AGENDA ITEM bog
CITY OF LODI
,. COUNCIL COMMUNICATION
im
AGENDA TITLE: Approve Specifications and Authorize Advertisement for Bids for the
Rejuvenation of 15,290 feet of Underground Electric Cable in English Oaks
Phase One ($145,000) (EUD)
MEETING DATE: April 7,2010
PREPARED BY: Interim Electric Utility Director
RECOMMENDED ACTION: Approve specifications and authorize advertisement for bids for the
rejuvenation of 15,290 feet of underground electric cable in English
Oaks Phase One in the amount of $145,000.
BACKGROUND INFORMATION: A number of distribution circuits with direct -buried underground
cables have more than 30 years of service and are wearing out.
There have been a number cf failures in direct -buried cable due to
insulation weakness, which have led to power outages.
To ensure continued reliable service, it is prudentto replace aged direct -buried cable. Direct -buried cable
is more expensive and difficult to replacethan cable in conduit. Because of shorter life and much more
expensive replacement, we no longer bury cable directly, but rather in conduit. Replacing direct -buried
cable requires digging trenches, laying down new conduits, and pulling in new cables.
Last year, the Electric Utility Departmenttried rejuvenatingthe insulation of direct -buried cables in the
Royal Crest Subdivision and it proved to be a cost-effective option. Rejuvenation involves injecting old
cable with a product called Ultrinium 732 at high pressure, which is expected to extend the life cf the
cable for 40 or more years. The estimated cost cf replacement was approximately $300,000 and the
actual cost of cable rejuvenationwas approximately $90,000, saving more than 50 percent of project
cost. English Oaks Subdivision is served by aged direct -buried cable. English Oaks Phase One is
proposed for the second cable rejuvenation project.
FISCAL IMPACT: Estimated cost of rejuvenation is $145,000. In the alternative, the estimated cost
for replacement would be $400,000. The estimated savings for rejuvenation over
replacement is approximately $255,000.
FUNDING: 160651.7713
enneth A. Weisel
Interim Electric Utility Director
PREPARED BY: Demy Bucaneg, Jr., P.E., Assistant Electric Utility Director
KAW/DBAst
APPROVED:
Blair Kin , nager