treasure valley road dust study: final report - ResearchGate

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Section 1 Section 2 Section 3 Figure 4-9. Map of Chinden sanding/sweeping test. Section 3 Section 2 Section 1 Figure 4-10. Map of Franklin/Rose Hill sanding/sweeping test. 4-22
Both <strong>road</strong>s were surveyed twice with the TRAKER vehicle immediately prior to the application of sand. After surveying, the sand truck (Figure 4-11) was operated at 5 mph over all sections of both <strong>road</strong>s. Sand flow is regulated by two controls: the gate at the bottom of the sander and the speed of the belt that moves the sand through the gate. The rate of sand flow was measured at 2.0 kg/s. The swath of sand thrown from the truck was estimated to span 6 meters in diameter. Figure 4-11. Sand applicator truck. Visual observations of the sand on the test sections indicated that the sand truck did not uniformly disperse the sand across the lane. The sand in the truck was wet and had a tendency to clump as it was applied. While the sand deposits were not uniform across the lane, there is no basis for presuming that any test section received more or less sand than the others. Immediately after sanding, the vacuum sweeper (Figure 4-12) began operating on Section 1 and the mechanicalsweeper (Figure 4-13) began operating on Section 2. Sweeper operators were instructed to use routine sweeping practices to collect all visible sand within their respective sections. Section 3 was used as a control and was not swept after sanding. Figure 4-12. Elgin Whirlwind vacuum sweeper. 4-23
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TREASURE VALLEY ROAD DUST STUDY: FI
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EXECUTIVE SUMMARY The Idaho Departm
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TABLE OF CONTENTS 1. INTRODUCTION..
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6.3 DISCUSSION ....................
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are strongly correlated and that on
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Figure 4-17. Map of street sweeper
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xvi
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Table 5-3. Speeds and VKT by county
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Table A-28. Laboratory Silt Analysi
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?? To assess the impact of winterti
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2. SILT MEASUREMENTS For this study
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vehicle tires. The lengths of the s
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Figure 2-1. Map of Sample Collectio
Page 31 and 32: Table 2-5 Silt Content and Silt Loa
Page 33: collectors. In contrast, summer sil
Page 36 and 37: 3.2 TRAKER Measurements For the TVR
Page 38 and 39: introduced by the carbon vanes insi
Page 40 and 41: 3.2.4.1 Data Acquisition The TRAKER
Page 42 and 43: Figure 3-6 shows the TRAKER coeffic
Page 44 and 45: 250 200 PM2.5 signal (mg/m 3 ) 150
Page 46 and 47: Line losses associated with the Dus
Page 48 and 49: 1.2 1 Left Diluted Right Diluted Pr
Page 50 and 51: Table 3-2. Regression exponents for
Page 52 and 53: 3.4.2 Flux Calculation from Meteoro
Page 54 and 55: 12.2 m 0.16 9.0 m 0.05 5.7 m 0.22 4
Page 56 and 57: 400 Ford Ranger on NS Road by DW1 4
Page 58 and 59: ceiling can be further stretched to
Page 60 and 61: 100 sL = 2.5717(T*) 0.4741 R 2 = 0.
Page 62 and 63: 4.1.1 Converting TRAKER Data Into E
Page 64 and 65: Table 4-1. (cont) GIS coverages use
Page 66 and 67: Table 4-1. (cont) GIS coverages use
Page 68 and 69: a. b. Figure 4-1. Map of TRAKER Str
Page 70 and 71: egressions, R 2 and P-values are al
Page 72 and 73: Summer - Ada - Rural Summer - Ada -
Page 74 and 75: The average emissions factor is 6.7
Page 76 and 77: Figure 4-5. TRAKER Loop 4.3.1 Tempo
Page 78 and 79: weeks prior to being swept. While t
Page 80 and 81: 4.3.2 Meteorological Effects on Unp
Page 84 and 85: Figure 4-13. Johnston HSD mechanica
Page 86 and 87: Approximately 8 hours after the ini
Page 88 and 89: One-second emissions potentials (i.
Page 91 and 92: 5. EMISSIONS INVENTORIES FOR THE TR
Page 93 and 94: where E i.10 is the emissions in gr
Page 95 and 96: County Setting Road Class Speed (m/
Page 97 and 98: January, February, and March were u
Page 99 and 100: 5.1.3.2a January 1 - 9, 2000, 2010,
Page 101 and 102: Table 5-9 Precipitation and snow co
Page 103 and 104: complete link-level emissions inven
Page 105 and 106: Table 5-14. Distributions of averag
Page 107: Taken on an average annual basis, T
Page 110 and 111: Z n , K zn , ? c/ ? z n Z 3 , K z3
Page 112 and 113: Table 6-1. Aerodynamic particle siz
Page 114 and 115: 14 m 0 s 15 s 30 s 60 s 120 s 240 s
Page 116 and 117: Furthermore, the vertical profile o
Page 118 and 119: ?? Sieving each sample to obtain a
Page 120 and 121: 7-4 Table 7-1. Source Profile Key M
Page 122 and 123: Table 6-1 (continued). Table of geo
Page 124 and 125: Treasure Valley Road Dust Winter Pa
Page 127 and 128: 7.3 Source Profile Summary This a p
Page 129 and 130: Table 7-4. Source profiles of Summe
Page 131: Table 7-6. Source profiles of Winte
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Bliss experiments were significant
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section was swept with a vacuum swe
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8.3 Differences Between Emissions M
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determine at this time what fractio
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sweepers to reduce PM 10 emissions
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McMahon T.A., and P.J. Denison (197
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Figure A-1. Map of Sample Collectio
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Table A-2. Summer 2001 Silt Samplin
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Table A-3. Laboratory Silt Analysis
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Figure A-3. Map of Silt Loading Loc
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Figure A-11. Sampling locations of
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APPENDIX B. BOISE PRECIPITATION AND
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Pecentile among days with precipita
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A.1 Wind speed The cumulative frequ
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APPENDIX C : EMISSIONS INVENTORIES:
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C.1.1.2a Field List for worksheets
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values specified by AP-42 and do no
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