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Title: Flood Grouting for Infiltration Reduction on Private Side Sewers

PROJECT NUMBER:

INFR5R11

PROJECT MANAGER:

Walter L. Graf, Jr.
Water Environment Research Foundation
wgraf@werf.org

PRINCIPAL INVESTIGATOR:

Martha Burke (x)
Seattle Public Utilities

STATUS:

Completed

LAST UPDATED:

2/13/2013

TOTAL FUNDING:

$1,200,000.00

REPORT DESCRIPTION:

Provides results of a field test of the flood grouting process to seal laterals, sewer mains, and manholes by monitoring prior to, during, and after completion of flood grouting application. Prior to obtaining approval to proceed with this pilot project, a “business case” was prepared to compare the total life-cycle cost of the proposed option to other alternatives, which included joint grouting, pipe bursting, cast-in-place pipe (CIPP) lining, and replacement with upsized pipe. The amount of flow reduction was measured and compared that to the total project costs as tracked through Seattle Public Utilities’ cost accounting system. Researchers looked at the potential for using the technology to reduce the risk for future backups in Seattle’s Broadview neighborhood, as well as its applicability in other locations. Published by WERF. 156 pages. Soft cover and online PDF. (2013)

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