00000nam 2200000zi 4500 9.907344 CaOODSP 20221107181350 m o d f cr |n||||||||| 220127s1990 onca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-on NH17-326/1990E-PDF Fugler, Don, author. Remedial measures for housing on hazardous lands / D. Fugler, M. Adomait. Ottawa, Ontario : Canada Mortgage and Housing Corporation, Research Division, [1990] 1 online resource (7 unnumbered pages) : illustrations text txt rdacontent computer c rdamedia online resource cr rdacarrier Digitized edition from print [produced by Canada Mortgage and Housing Corporation]. Caption title. Includes bibliographical references. "In the mid-1970's, an 81 unit townhouse complex was built in Kitchener, Ontario on an old municipal garbage dump and adjacent to a major landfill site. The combination of odours and dangerous levels of methane soon caused the householders to leave. The complex has been largely vacant for ten years. CMHC and CH2M Hill Engineering explored ways to reduce the levels of methane concentration in the houses. A radon remedial measure, subslab ventilation, proved very effective in keeping indoor methane concentrations below 100 ppm, even in the townhouses with the previously recorded levels up to 30,000 ppm. Researchers are now investigating the ambient air impact of the subslab venting, the soil pressures required for effective venting, and the regulatory maze that needs to be traversed before the units can be reoccupied"--Introduction. Methane Ontario Kitchener Testing. Sanitary landfills Ontario Kitchener Testing. Méthane Ontario Kitchener Essais. Décharges contrôlées Ontario Kitchener Essais. Canada Mortgage and Housing Corporation. Research Division, issuing body. PDF 251 KB https://publications.gc.ca/collections/collection_2022/schl-cmhc/NH17-326-1990-eng.pdf