The City of Redding, California Implements Pipe Bursting for Existing Asbestos Cement Gravity Sewer Pipe


The City of Redding, California Implements Pipe Bursting for Existing Asbestos Cement Gravity Sewer Pipe

Authors:

Edward Alan Ambler, PE, LEED AP, AM Trenchless, Lake Mary, Florida
Corri Vandiver, PE, City of Redding, California
Josh Vandiver, City of Redding, California

Abstract: City staff at the City of Redding in Northern California have recently embarked on an asbestos cement pipe bursting project for existing gravity sewer within the City’s collection system. The Enterprise Area Sewer Line Replacement Project replaces over 2 miles of gravity sewer pipe through pipe bursting. Approximately a ½ mile of the existing pipe are asbestos cement (AC) pipes. City staff have successfully implemented pipe bursting for gravity sewer pipe replacement in previous projects and understood there were regulatory challenges with working with existing AC pipe. The City of Redding is within Shasta County which does not specify air quality limitations for asbestos emissions beyond the National Emissions for Hazardous Air Pollutants (NESHAP). Through attendance at NASTT’s No Dig, City staff learned about bursting AC pipe and contracted with AM Trenchless to provide additional assistance in writing specifications for handling AC pipe and assisting City staff in working through the regulatory process. City staff and AM Trenchless understand that trenchless technology methods, such as pipe bursting, minimize environmental and social impacts, including reduced excavation and restoration, reduced greenhouse gas emissions and minimized project schedule. It was determined by City staff that the potential savings in project cost in addition to minimized social and environmental impacts would be worth the effort required to overcome any misconceptions about pipe bursting AC pipe.

Publication Date: 2018

Presented at:
NASTT’s 2018 No-Dig Show Palm Springs, California
March 25-29, 2018 | Paper Number: MM-T4-04


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