HBR track rehabilitation and permafrost considerations Designing sustainable infrastructure with limited engineering data is always a challenge and more so when it comes to where minimal interference to the environment is desired. Rehabilitation of the HBR line had similar challenges, as it passes through several stretches of permafrost. The rail line was damaged by a flood that was triggered by melting snow and rain, which was aggravated by the degradation of the underlying permafrost. This, compounded with the harsh winter, shorter construction season and linear construction sequence, demanded a solution that could address all these issues and complete the work within a reasonable time and budget. A design with NPA geocell reinforcement for the railway embankment addressed several issues like: * Providing necessary structural strength for the railway traffic * Protecting the underlying permafrost from further degradation * Controlling erosion at the embankment slopes against snowmelt and creek flows * Facilitating a linear construction schedule * Completing the project within the available time and a significantly lower budget The postflood condition of the track in spring of 2018 and preflood condition Go Beyond the Field Plastatech® CONT AIN | CONTR OL | COMPL Y custom-fabricated accessories help you achieve faster installation times and reduce leaks for longer lasting results. Designed to meet your specific needs, our accessories include pipe boots and corners, and are available in: Polyvinyl Chloride (PVC) High-Density Polyethylene (HDPE) Linear Low-Density Polyethylene (LLDPE) Reinforced Polyethylene (RPE) Reinforced Polypropylene (RPP) For more information about our accessory line, contact us at: 800-892-9358 | plastatech.com Reference your local and federal containment regulations for complete compliance requirements. Plastatech is a registered trademark of Plastatech Engineering, Ltd. | Plastatech is proudly manufactured in the USA. PL040004 Accessory-Ad_ORIG: 1.14.20 www.GeosyntheticsMagazine.com 15http://www.plastatech.com http://www.GeosyntheticsMagazine.com