00000nam 2200000zi 4500 9.876965 CaOODSP 20241203113650 m o d f cr ||||||||||| 190725e199011##oncabd #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-us-ny En13-5/90-97E-PDF Lapcevic, P. A., author. The results of constant head injection tests using variable packer spacings to characterize permeable fractures in the Lockport dolostone, Niagara Falls, New York / by P.A. Lapcevic. Burlington, Ontario : Canada Centre for Inland Waters, National Water Research Institute, November 1990. 1 online resource (25 pages, 16 unnumbered pages) : illustrations, maps, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 90-97 "RRB 90-69." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 24-25). "Four boreholes which were drilled 25 to 50 m apart at a field site, in the Niagara Falls, New York region, were used to examine the nature of the fracture permeability in the Lockport dolostone. The Lockport Group is a sequence of dolostone formations of Upper Silurian age which make up the upper bedrock in the Niagara Falls region. The study was conducted to evaluate the use of standard packer separations in determining the permeability of a bulk rock mass which is pervaded by fractures at a frequency greater than the packer spacing"--Abstract. Includes abstract and management perspective in English and French. gccst Groundwater gccst Sedimentary rocks gccst Testing Canada. Environment Canada. Canada Centre for Inland Waters. National Water Research Institute (Canada) NWRI contribution ; 90-97. (CaOODSP)9.844121 PDF 3.07 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-90-97-eng.pdf