ANNUAL SEWER ROOT FOAMING

DESCRIPTION:

The City Council accepted the Sanitary Sewer Master Plan on November 29, 2005. The Sewer Master Plan recommends that an annual project be performed to chemically remove invasive tree roots within sewer mains. The purpose of this project is to apply chemical root control agent to the sanitary sewer lines to kill the root growth that may be present in the lines and to inhibit re-growth, without permanently damaging the vegetation producing the roots. Chemical root removal products currently on the market provide protection from future root growth for two to three years following application.


COST SUMMARY:
Design and Construction $ 332,000

POTENTIAL FUNDING SOURCES:
Sewer Enterprise Fund $ 332,000

IMPACT ON ANNUAL MAINTENANCE AND OPERATION COSTS:
Chemical removal of roots should decrease maintenance effort for sanitary sewers being treated, since a great deal of effort is spent maintaining lines in areas with high potentials for root intrusion.

ALTERNATIVES:
Continue root removal in mains though mechanical and hydraulic methods.