Proceedings - Teaching and Learning Centre - Simon Fraser ...

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Fraser River Action Plan 3rd Research Workshop Sampling Period January, 1995 to December, 1995 Results Expected 1. The site is between 2 major traffic arteries (HWY 1 and HWY 7), so we expected to see chemical composition similar to that for transportation sources. 2. A “finger print” of vehicle emissions will be compared to those at this site. 3. The topography and the meteorology of the area would indicate that the prevailing winds would be primarily from the east, then the west and then from other directions. 4. If the particulate is from transportation sources, than the expected particle size would be < 2 µm. Actual Results 1. Because we have just received the bulk of the data we have not been able to evaluate most of the dry deposition data. 2. For the wet deposition, from partial data we see periods of short rainfall with higher concentrations of PAHs that will need to be evaluated for ‘toxic concentrations.’ 3. Rainfall of longer duration is less concentrated because of dilution. 4. Particulate sizes have been generally < 2 m in size, and will be compared to vehicle traffic data from in the Cassiar Tunnel. 5. Wet deposition sources appeared to be from easterly wind-bearing sources. 6. PAH deposition values appeared to be relatively consistent in their amounts relative to each other. 7. A preliminary estimate of wet deposition of PAH to the area is about 1.9 μg /m 2 /day, or about 0.7 mg/ m 2 /year. Page 128
Fraser River Action Plan 3rd Research Workshop Other Studies • Snowfall samples have been taken along the north shore mountains, as far as Hope, and they have been analyzed for metals, nutrients and pH. This data will be compared to previous sampling programs in 1982 and 1985. • Air samples for ammonia, nitrate and sulfate will be taken in a current sampling program at Agassiz and Abbotsford to assess the contribution of airborne nitrogen to the deposition in the Fraser Valley. • Air samples for organic agricultural chemicals will also be taken for wet and dry conditions at the Agassiz and Abbotsford sites, to determine their presence or absence. Summary 1. Wet deposition data has had preliminary assessment for metals and PAH content. 2. Dry deposition has yet to be assessed. 3. Air emissions appear to have a bimodal size distribution (10 and 1.0 m ) 4. PAH sources appear to be primarily from transportation sources. 5. Metals appear to be from diverse sources. 6. The prevailing winds appear to be primarily from the eastern quadrant. 7. Comparisons with aquatic and sediment data have yet to be done. Page 129
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PROCEEDINGS 3rd RESEARCH WORKSHOP F
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TABLE OF CONTENTS Participants ....
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Development of a Citizen’s Monito
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Fraser River Action Plan 3rd Resear
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SESSION 1 PULP MILL EFFLUENT ISSUES
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SESSION 5 BIOLOGICAL INDICATORS
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SESSION 6 ESTUARY ISSUES
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Fraser River Action Plan The Use of
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Fraser River Action Plan Concluding
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