Highways Agency Report

             Shelfmark: HA Room A114-117, Heron House, Bedford.  Urban Roads
                        A5
       Personal author: Marsalek J
                 Title: An exploratory study of urban runoff toxicity
             Publisher: National Water Research Institute
  Physical description: 7 leaves, charts
                 Price: Unpriced
                Series: SSR Water Library;  Urban Roads A5
       Notes - general: Abstract: An exploratory study of urban runoff
                        toxicity was undertaken at 14 urban sites, including
                        two sites receiving runoff from major multi-lane
                        divided highways.  To assess various types of
                        toxicity, a battery of tests was used including
                        Daphnia magna, Microtox, submitochondrial particles,
                        and the SOS chromotest (for genotoxocity).  The whole
                        data set comprised almost 70 samples and 350 test
                        results, which were reduced to toxicity point values
                        using a toxicity scale.  About two fifths of all data
                        did not show any toxic responses, one fifth indicated
                        severe toxicity, one fifth cinfirmed toxicity, and one
                        fifth potential toxicity.  When comparing urban
                        stormwater toxicity to that of multi-lane divided
                        highway runoff, the main difference was noted for the
                        severe toxicity level; almost 20% of MLDH samples were
                        severly toxic compared to 1% of stormwater samples.
                        The MLDH data were obtained at the edge of the
                        pavement, and although attention of runoff toxicity
                        during transport can be expected, particularly in
                        grassed swales, additional research is required.
               Keyword: Bioassays
               Keyword: Highway Runoff
               Keyword: Toxicity
               Keyword: Toxicity Remediation
               Keyword: Urban Stormwater Runoff
 SSR WATER LIBRARY MATERIALS
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