Impact of land use activities on sediment-associated contaminants; Quesnel River Basin, British Columbia.

Smith, Tyler B.

doi:10.24124/2013/bpgub892

Cited by 5 publications

(10 citation statements)

References 29 publications

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“…Suspended particulate matter samples were collected using time‐integrated SPM samplers (TIMS) (Phillips et al ., ) at all 30 sampling sites. TIMS have been widely used to collect representative SPM samples for investigations of characteristics and chemical composition in various fluvial environments (Russell et al ., ; Ankers et al ., ; Ballantine et al ., ; McDonald et al ., ; Smith and Owens, ; Martinez‐Carreras et al ., ; Marttila et al ., ). These studies have clearly confirmed the ability of TIMS to collect representative, time‐integrated samples of SPM (Phillips et al .…”

Section: Methodsmentioning

confidence: 99%

Spatial and temporal variation in particle size and particulate organic matter content in suspended particulate matter from peatland‐dominated catchments in Finland

Marttila

2014

Hydrological Processes

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Abstract:Properties of suspended particulate matter play a vital role in transport processes, but information from boreal lowland river systems with high organic loads is limited. This study analysed data from 2 years of sampling at 30 locations in Finland (204 samples in total) using suspended particulate matter samplers to determine effective and absolute particle size and organic fractions. Mean d 50 value was 22 and 49 μm for absolute and effective particle size, respectively. The organic fraction content ranged from 2.1% to 36% (mean 9.6%), highlighting the importance of particle organic matter for suspended particulate matter flux in the region. The results indicated that the suspended particulate matter particle size distribution and load in the study region is dominated by composite particles. There were considerable spatial and temporal variations in transport of organic fractions, effective particle size and degree of aggregation (range 1.5-93%). Headwaters and, in particular, late summer and spring flood conditions with flow peaks produced the largest composite particles, whereas agriculture-dominated sites produced smaller but more tightly compacted particles. Organic plant fibres appeared to play a vital role in floc formation in peat-covered catchments, whereas in agriculture-dominated catchments, land use-derived aggregates dominated the composition. This study provides empirical evidence of the importance of effective particle size measurement in understanding the dynamics of suspended particulate matters in boreal lowland river systems.

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Section: Methodsmentioning

confidence: 99%

Spatial and temporal variation in particle size and particulate organic matter content in suspended particulate matter from peatland‐dominated catchments in Finland

Marttila

2014

Hydrological Processes

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“…Comparison of median particle size composition (d 50 ) for sediment collected by the Phillips sampler and for channel bed sediment samples collected from a variety of rivers with contrasting land-use activity in the Quesnel River Basin as part of a larger project (cf Smith and Owens, 2010). Both sets of samples were screened through a 63 μm sieve prior to analysis.…”

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confidence: 99%

Flume‐ and field‐based evaluation of a time‐integrated suspended sediment sampler for the analysis of sediment properties

Smith

Owens

2014

Earth Surf Processes Landf

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Suspended sediment has been identified as a vector for nutrient and contaminant transport in the fluvial environment. A time‐integrated sampler (the Phillips sampler), which emerged over a decade ago as a cost‐effective tool for in situ suspended sediment collection, is increasingly being used to collect samples for the analysis of sediment properties such as particle size composition, and nutrient and contaminant concentrations. This study evaluates the sampler under both flume and field conditions for efficiency in the mass and grain size of the suspended sediment collected. The sampler was tested in a flume using both kaolinite and sediment samples (sieved to < 180 µm) collected from the Quesnel River, British Columbia, Canada. In the kaolinite trails, the sampler preferentially collected coarser grain sizes compared to the original sediment, probably due to finer sediment remaining in suspension and therefore passing through the sampler, and also possibly due to flocculation of the kaolinite upon introduction to the flume. Conversely, the sampler collected river sediment that was finer than the original sediment, probably due to some settling of coarser sediment observed at the bottom of the flume. Once allowance was made for these operational issues associated with the flume, maximum sediment mass efficiency for kaolinite and river sediment was 43% and 87%, respectively. Sediment collected by the time‐integrated sampler during field deployment and adjacent channel bed sediment were also compared. The sampler collected sediment with a representative grain size distribution. However, there were differences in the geochemical (arsenic and selenium) concentrations of channel bed sediment and sediment collected by the Phillips sampler which may be a function of differences in the behavior of geochemical elements associated with the two types of sediment. This work suggests that further research is needed to evaluate the role of the Phillips sampler in collecting sediment for contaminant and nutrient analysis. Copyright © 2014 John Wiley & Sons, Ltd.

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“…Potential sources of sediment (and thus contaminants) above Q1 include stream bank material, while below Q1 stream banks as well as contributions of sediment from the Cariboo River and the Bullion Pit mine discharge (which is located ~4 km downstream from site Q1) need to be considered. Samples of the fine sediment from the Cariboo River and stream banks were collected in this project (see section 2.3.1), while the Bullion Pit values were obtained from Smith (2012), these results are shown in Table 3.5.…”

Section: Additional Sediment Sourcesmentioning

confidence: 99%

“…The first site (Q1) is located near the town of Likely at the Quesnel River Research Center (QRRC), the second site (Q2) is located ~ 9 km downstream of the confluence of the Cariboo River and therefore incorporates the flows from the historical Bullion Pit mine (mining ceased in 1942), and the farthest site (Q3) from the breach was located ~ 28 km upstream of the city of Quesnel to eliminate possible sources of contamination associated with the city. Pre-breach sampling at sites Q1 and Q3 was undertaken in 2008 by Smith and Owens (2014a) as part of another study (Smith 2012) which allows for pre-and post-breach comparisons. There were also two secondary sites located on Hazeltine Creek at the two bridge access points; these two sites were chosen because (i) they helped to address objective 4; and (ii) samples were collected pre-breach at these locations by Smith (2012) allowing for comparisons in sediment quality prior to the breach.…”

Section: Field Samplingmentioning

confidence: 99%

“…Pre-breach sampling at sites Q1 and Q3 was undertaken in 2008 by Smith and Owens (2014a) as part of another study (Smith 2012) which allows for pre-and post-breach comparisons. There were also two secondary sites located on Hazeltine Creek at the two bridge access points; these two sites were chosen because (i) they helped to address objective 4; and (ii) samples were collected pre-breach at these locations by Smith (2012) allowing for comparisons in sediment quality prior to the breach.…”

Section: Field Samplingmentioning

confidence: 99%

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Sediment-associated contaminant transport and storage dynamics in the Quesnel River from the Mount Polley Mine disaster

Sussbauer¹

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ii AbstractIn August 2014, the tailings storage facility of the Mount Polley copper-gold mine was breached releasing ~25 million m 3 of tailings water and solids into Polley Lake and Hazeltine Creek, which scoured local overburden (1.2 million m 3 ), and deposited these materials in Quesnel Lake. This study examined temporal and spatial movements of sediment-associated elements in Quesnel River, downstream of the lake, between August 2014 and August 2015. Suspended river sediment was collected using active and passive samplers (a continuous-flow centrifuge and time-integrated samplers), while discrete bed sediment was collected using a re-suspension technique. Results indicated elevated trace element levels, especially copper, with significant differences between element concentrations at the upstream site, closer to the breach, compared to downstream sites.Contamination indices and comparison to sediment quality guidelines indicated contamination was present in the river and varied seasonally predominantly driven by Quesnel Lake's autumnal cooling and overturns. Content

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Impact of land use activities on sediment-associated contaminants; Quesnel River Basin, British Columbia.

Cited by 5 publications

References 29 publications

Spatial and temporal variation in particle size and particulate organic matter content in suspended particulate matter from peatland‐dominated catchments in Finland

Spatial and temporal variation in particle size and particulate organic matter content in suspended particulate matter from peatland‐dominated catchments in Finland

Flume‐ and field‐based evaluation of a time‐integrated suspended sediment sampler for the analysis of sediment properties

Sediment-associated contaminant transport and storage dynamics in the Quesnel River from the Mount Polley Mine disaster

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