000 02569nam  2200349za 4500
0019.867197
003CaOODSP
00520221107162240
007cr |||||||||||
008190117s2003    onc    #ot   f|0| 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn---
0861 |aEn13-5/03-173E-PDF
1001 |aPtacek, Carol Jane, |d1959-
24510|aTransport of metals from mine tailings impoundments and release to surface waters |h[electronic resource] : |bfinal report : May 31, 2002, TSRI project number 192 / |cCarol J. Ptacek and David W. Blowes.
260 |a[Burlington, Ont.] : |bEnvironment Canada, |c[2003]
300 |a41 p. : |bfigures.
4901 |aNWRI contribution ; |vno. 03-173
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographic references.
520 |a"There are over 10,000 abandoned mine sites in Canada which have the potential to release unacceptable concentrations of metals to groundwater and surface waters for many decades to centuries after mining activities cease. When mine wastes are exposed to the atmosphere, the sulfide minerals in the waste oxidize and release acid and metals to the environment. The release can take place over several decades to many centuries. The timing and duration of peak discharges vary from site to site, depending on the rate and extent of sulfide oxidation, acid neutralization, metal attenuation and release reactions, the groundwater velocity and length of the groundwater flow path. Many oxyanion forming elements such as arsenic, behave quite differently than cation-forming metals, because of their higher mobility under near-neutral pH conditions. The objectives of this study were to evaluate the geochemical, hydrogeological and microbiological mechanisms controlling the long-term release of (H+), sulfate (S04), aluminum (Al), arsenic (As), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), iron (Fe), lead (Pb), manganese (Mn), nickel (Ni) and zinc (Zn) from mine waste sites"--Abstract.
546 |aAbstracts in French and English.
69207|2gccst|aGeochemistry
69207|2gccst|aMining industry
69207|2gccst|aGroundwater
7001 |aBlowes, David, |d1956-
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada)
830#0|aNWRI contribution ;|vno. 03-173.|w(CaOODSP)9.844121
85640|qPDF|s2.39 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/En13-5-03-173-eng.pdf