To: MAYOR AND CITY COUNCIL
From: ANDREW WINJE, PUBLIC WORKS DIRECTOR
TITLE
title
APPROVE AN AGREEMENT WITH DUKE'S ROOT CONTROL TO PROVIDE SEWER LINE ROOT FOAMING SERVICES FOR AN ANNUAL COST NOT TO EXCEED $316,000, AND A TOTAL THREE-YEAR NOT TO EXCEED AMOUNT OF $948,000, FOR THE TERM JULY 19, 2025 THROUGH JULY 18, 2028
end
EXECUTIVE SUMMARY
In order to maintain the operational capacity of the City's sewer main lines, staff recommends approving a three-year agreement with Duke's Root Control to provide root foaming service. This service mitigates the impact of tree roots that have grown into sewer lines. Duke's Root Control will apply an herbicidal foam which greatly reduces the likelihood of system blockages. The service would be provided for an annual cost not to exceed $316,000, and a total three-year cost not to exceed $948,000. Funding for the annual service is included in the City's sanitary sewer maintenance program budget.
BACKGROUND
The City's sewer system contains approximately 600,000 linear feet of main lines, with approximately 400,000 linear feet being located in areas where tree roots can cause damage and obstruct pipes. Approximately 75% of all sewer blockages and overflows involve tree root intrusion into main lines. The most effective way to proactively address this issue is through the periodic application of an herbicidal foam that kills the roots and allows them to decay naturally and slough off inside the sewer line. The trees, and other above ground vegetation, are not harmed by this process. The chemical root control agent is approved by the Los Angeles County Sanitation District and is registered with the Environmental Protection Agency and the California Department of Pesticide Regulation.
The City's current agreement with Duke's Root Control is scheduled to expire on July 18, 2025. The contractor has proposed to provide services for another three years for a base cost of $1.85 per linear foot. The proposed prici...
Click here for full text