Emergency sewer repair in Langley completeEmergency sewer repair in Langley complete<div class="ExternalClassF69F07750059450E8DD82BD213F97C48"><p>​Metro Vancouver just completed a sewer pipe repair project in the Langley City Centre.</p><p>The Carvolth Trunk Sewer was constructed in 1977 and was scheduled to be rehabilitated in 2017, after completion of a related sewer replacement project. Before the scheduled rehabilitation work could be completed, a localized sewer failure occurred at 56A Avenue near 200th Street in June 2016. Residents may recall this resulted in a sinkhole in the middle of the road due to corrosion resulting from hydrogen sulphide gas in the sewer system. Metro Vancouver’s construction staff performed emergency local repair. It was later decided that the remainder of the corroded pipe needed to be rehabilitated immediately.</p><p>In November 2016, 315 metres of Carvolth Trunk Sewer along 56A Avenue and 200th Street was rehabilitated using the Cured-in-Place Pipe method. A folded, resin-saturated pipe liner was inserted inside the old pipe. The liner was later unfolded and cured in-place using pressurized hot steam. The project location was within one of the City’s busiest residential and business areas. Project challenges included traffic diversions, bypass of large volumes of sewage during the wet season, around-the-clock work (noise concerns especially at night) and public impacts. Staff put in measures to reduce public impacts during the week of construction. By rehabilitating the sewer pipe rather than replacing it, an estimated 70% cost saving was achieved and overall impact of work on the neighbourhood was greatly reduced. The refurbished pipe has high structural capacity and will service the area for many years to come.</p></div>http://www.metrovancouver.org/metroupdate/PublishingImages/carvolth-night-time.jpg2017-01-26T08:00:00ZGP0|#59156931-d501-4376-b60c-94cddcdcafc8;L0|#059156931-d501-4376-b60c-94cddcdcafc8|Issue 28;GTSet|#d14ffe11-45dc-48fb-8684-ff109cf15a74<div class="ExternalClass93327B216F1C4F10BBC15D0D1CE4BB00"><p>​Metro Vancouver crews recently repaired over 300 metres of the Carvolth Trunk Sewer in the City of Langley. If you live in the area you may have observed the work occurring well into the dark. Find out what was going on in this article. </p></div>0Working after dark. This photo is taken during the process to cure liner using pressurized hot steam.