CASE STUDY SPR™ EX TWO DECADES OF SEWER REPAIR IN LOS ANGELES COUNTY, CA SEKISUI SPR EX Liners have been installed on Los Angeles County area sewer rehabilitation projects since 1998. As of January 2016, Sekisui’s licensed contractors have installed over 750,000 feet of SPR EX (spiral wound liners) on Los Angeles County Department of Public Works’ (LACDPW) projects alone with additional projects awaiting construction. Sekisui’s

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