Kilogram of filter media has an absorption capacity of 52 gram oil and grease, 20 milligram Mn, and 16 Performed well for the dissolved metal removal before the non-reversible saturation was reached. Suspended metal/solids were achieved with low particulate loading in the filter chamber. From the catch basin filter evaluation, high removal efficiencies on The runoff trace metalĬoncentrations are strongly related to the antecedent dry period, and are weakly related to the trafficĭensity and the rainfall intensity. Diesel bus traffic contributes' a large portion of Cu, Fe, Zn contamination since the averageīus loop trace metal levels were much higher than the GVRD urban levels. The dissolved Cu and Zn Event MeanĬoncentration (EMC) exceeded the EPA discharge criteria in 2 and 4 events each, which occurred in theĭry season. Stormwater runoff quality was monitored in 15 storm events from October 2004 to June 2005 in theĭiesel bus loop in the University of British Columbia. Overloading problem causes serious metal contamination in the lake. 1062 tons of sediments were trapped by Burnaby Lake in 2003. No apparent trend was observed in terms of export coefficient Positive correlation existed between the suspended metal loading (kg/yr) and the While the -Ĭoncentrations in mg/kg, especially for metal Cu and Zn, showed strongly and positively correlation with Suspended metal concentration in μg/l is negatively correlated with the drainage areas. The land use is considered to be the origins of these toxicants. Sediment exceeded probable effect level in Still Creek and Stoney Creek to varying degrees with Cu and The suspended Cu, Mn, and Zn increased by a factor of 2.1, 4.2, and 1.5, respectively. Streambed Cu, Mn, Fe, and Zn concentration increased by 1.5, 1.7, 1.9, and 1.1 times, respectively.
From 1993 toĢ003, the major stormwater contamination happened in the most industrialized Still Creek. Sediment and suspended sediment from selected streams during 7 storm events over 2003. In the Brunette River watershed study, Northwest Hydraulic Consultants (NHC) collected streambed Watershed and a diesel bus loop was assessed in terms of trace metal contamination in the stormwater In the Greater Vancouver Regional District (GVRD), non-point source pollution from an urban These results show that while quantitative real-time PCR can be used to determine levels of fecal indicator bacteria in surface waters, there are some limitations to its application and it may be impacted by sources of runoff based on surveyed samples. Additionally, the urban canal samples were significantly lower than those determined by conventional culture methods for the wet season. While mean log CFU/100 ml counts in the wet season using quantitative PCR were log 3 and 2, respectively. For the wet season, data determined by the membrane filtration method in river/suburban canals and urban canals samples had mean counts of log 3.7 and 4.1, respectively. coli counts in the dry season for river/suburban canals and urban canals were log 2.8 and 3.7, respectively, using a membrane filtration method, while using Taqman quantitative real-time PCR they were log 2.4 and 2.8 for river/suburban canals and urban canals, respectively. Mean log colony-forming unit (CFU)/100 ml E. Quantification was done through membrane filtration and quantitative real-time polymerase chain reaction (PCR). Surface water samples in Vietnam were collected from the Saigon River, rural and suburban canals, and urban runoff canals in Ho Chi Minh City, Vietnam, and were processed to enumerate Escherichia coli.
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