HomeMy WebLinkAbout[08a] Root Foaming rry {, owr+ xost+,rit Council Agenda Item 8(a)
MEETING DATE: October 6, 2011
AGENDA ITEM: Root Foaming
SUBMITTED BY: Public Works Director, Terry Thene
BOARD / COMMISSION /COMMITTEE RECOMMENDATION:
PREVIOUS COUNCIL ACTION: In 2008 the City Council authorized the root foaming of 8,398 feet
of sanitary sewer mains.
BACKGROUND INFORMATION: In 2008 the city root foamed 8,398 feet of clay sanitary sewer
mains in the City, staff reviewed the effectiveness of the initial application and questioned the results. The
company reapplied the foam in 2009 at no cost to the City; the results after the second application were
good. The application should be reapplied on a two year cycle to keep roots that re -enter the pipe killed.
The foam has an herbicide that will kill most roots that have worked into the sanitary sewer piping. Roots
in the old clay sanitary sewer system of the City will be the main cause of sanitary sewer backups if not
dealt with. This will reduce staff hours by reducing the need for root cutting.
BUDGET/FISCAL IMPACT: $13,352.82, Sewer Funds budgeted
ATTACHMENTS: Request for Council Action 8(a): 1-2
CIP Extract, WW -1108 8(a):3 -4
REQUESTED COUNCIL ACTION: Approve the expenditure of $ 13,352.82 for the root foaming of
8,398 feet of sanitary sewer mains that were completed in 2008 an 2009
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f: WW -1108
CITY OF ST. JOSEPH
CAPITAL IMPROVEMENT PLAN
2011 - 2015
PROJECT TITLE: Sewer Lining/Televising (TOTAL COST: $20,000 /year
2011 BUDGET: $20,000.00 (PROJECT CATEGORY: Improvements other than Bldg
DESCRIPTION:
JUSTIFICATION: 'Account Code: E601- 49450 -530
Much of the original Village site has old clay tile sewers servicing the area (approximately 4.4 miles of clay
tile). The sewer mains are getting close to reaching their useful lives and will need replacing soon. To
determine which sewer mains need replacing Public Works can televise the sewers to assess how well the mains
are currently functioning. Ideally, the mains would be replaced when a street reconstruction project is planned.
Roots growing into the clay tile mains can be treated and cut back on an on -going basis to keep the mains from
collapsing. The mains that cannot wait for a street reconstruction project can be lined to add useful life to the
existing mains. The existing $20,000.00 budgeted for lining the old clay tile is not sufficient to get a cost
effective price. Mobilizing equipment is estimated to be $9,000. A $20,000 budget only deals with roughly 500'
of pipe being lined. The City was quoted $34.00 per foot for approximately 500 feet ($17,000). The City was
quoted $26.36 per foot for 8,783 feet ($231,519.88). The larger the footage the better price received per foot.
Televising and root foaming should continue to avoid sanitary sewer backups as much as possible.
PROJECT COSTS AND FUNDING SOURCES BY YEARS:
Project Funding Prior
Source Years 2011 2012 2013 2014 2015 Total
Sewer:
Improvements 59,352.00 20,000.00 20,000.00 20,000.00 20,000.00 20,000.00 159,352.00
PROJECT COSTS
PROJECT STARTING DATE: 2008 Preliminaries
Land Acquisition
PROJECT COMPLETION DATE: 2010 Construction
Equipment and Other 159,352.00
NEIGHBORHOOD: Total $159,352.00
Presented to the City Council on Approved Denied Tabled
Comments
Approval to Purchase Date Authorizing Initials Date
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