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Lidar characterization of crystalline silica generation and transport from a sand and gravel plant [An article from: Journal of Hazardous Materials]
Book Details
PublisherElsevier
ISBN / ASINB000RR8WU6
ISBN-13978B000RR8WU8
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Light detection and ranging (Lidar) remote sensing two-dimensional vertical and horizontal scans collected downwind of a sand and gravel plant were used to evaluate the generation and transport of geologic fugitive dust emitted by quarry operations. The lidar data give unsurpassed spatial resolution of the emitted dust, but lack quantitative particulate matter (PM) mass concentration data. Estimates of the airborne PM"1"0 and crystalline silica concentrations were determined using linear relationships between point monitor PM"1"0 and quartz content data with the lidar backscatter signal collected from the point monitor location. Lidar vertical profiles at different distances downwind from the plant were used to quantify the PM"1"0 and quartz horizontal fluxes at 2-m vertical resolution as well as off-site emission factors. Emission factors on the order of 65-110kg of PM"1"0 (10-30kg quartz) per daily truck activity or 2-4kg/t product shipped (0.5-1kg quartz/t) were quantified for this facility. The lidar results identify numerous elevated plumes at heights >30m and maximum plume heights of 100m that cannot be practically sampled by conventional point sampler arrays. The PM"1"0 and quartz mass flux was greatest at 10-25m height and decreased with distance from the main operation. Measures of facility activity were useful for explaining differences in mass flux and emission rates between days. The study results highlight the capabilities of lidar remote sensing for determining the spatial distribution of fugitive dust emitted by area sources with intermittent and spatially diverse dust generation rates.
Description:
Light detection and ranging (Lidar) remote sensing two-dimensional vertical and horizontal scans collected downwind of a sand and gravel plant were used to evaluate the generation and transport of geologic fugitive dust emitted by quarry operations. The lidar data give unsurpassed spatial resolution of the emitted dust, but lack quantitative particulate matter (PM) mass concentration data. Estimates of the airborne PM"1"0 and crystalline silica concentrations were determined using linear relationships between point monitor PM"1"0 and quartz content data with the lidar backscatter signal collected from the point monitor location. Lidar vertical profiles at different distances downwind from the plant were used to quantify the PM"1"0 and quartz horizontal fluxes at 2-m vertical resolution as well as off-site emission factors. Emission factors on the order of 65-110kg of PM"1"0 (10-30kg quartz) per daily truck activity or 2-4kg/t product shipped (0.5-1kg quartz/t) were quantified for this facility. The lidar results identify numerous elevated plumes at heights >30m and maximum plume heights of 100m that cannot be practically sampled by conventional point sampler arrays. The PM"1"0 and quartz mass flux was greatest at 10-25m height and decreased with distance from the main operation. Measures of facility activity were useful for explaining differences in mass flux and emission rates between days. The study results highlight the capabilities of lidar remote sensing for determining the spatial distribution of fugitive dust emitted by area sources with intermittent and spatially diverse dust generation rates.
