00000nam 2200000zi 4500 9.873449 CaOODSP 20241203113649 m o d f cr bn||||||||| 190523s1997 onca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-on En13-5/97-140E-PDF Brown, A., author. Characterization of trichloroethylene contamination in the fractured bedrock at the Smithville site / by A. Brown [and seven others]. Burlington, Ontario : Groundwater Remediation Project, National Water Research Institute, 1997. 1 online resource (1 unnumbered page, iv, 40 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 97-140 "December 9, 1997." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "This study has examined trichloroethylene (TCE) contamination and groundwater geochemistry of the bedrock units underlying the CWML site in Smithville. Two approaches were developed to measure the concentration of TCE discrete fractures, and to examine-the extent of contamination in the deeper rock units. The first approach used a small, 0.1 m sampling interval and a down-hole pneumatic pump to isolate and sample single discrete features, using existing transmissivity data to guide fracture location. The second approach focused on building a borehole concentration profile, using a larger submersible pump with a 1.5 m sampling interval. Geochemistry results, including anions, cations and dissolved oxygen, were obtained from most of the 0.1 m zones isolated. Trichloroethylene concentration, Eh, pH, TCE biodegradation products and trichlorobenzenes were all sampled for from the discrete features and larger zones"--Executive summary, page i. gccst Groundwater gccst Water pollution gccst Pollutants Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 97-140. (CaOODSP)9.844121 PDF 2.17 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-97-140-eng.pdf