treasure valley road dust study: final report - ResearchGate
treasure valley road dust study: final report - ResearchGate
treasure valley road dust study: final report - ResearchGate
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Table A-3. Laboratory Silt Analysis of Winter 2001 Riva Ridge Drive Sample<br />
SAMPLE ID: RS562<br />
Composite: Gross Weight Tape<br />
BOISL001 1610.1 clear<br />
BOISL002 667.1 clear<br />
BOISL003 448.5 clear<br />
Total 2725.7<br />
Sieving:<br />
pan sample diff % diff<br />
Tare 343.1<br />
20 min 355.2 12.1<br />
30 min 363.7 20.6 8.5 41.3<br />
40 min 366.9 23.8 3.2 13.4<br />
Mass Determination<br />
Screen Tare weight (g) Final Weight(g) Net weight(g)<br />
Sieves Sieves+sample Sample<br />
Lid 216.3 216.3 0.0<br />
1/4 inch 490.2 643.2 153.0<br />
4 mesh 444.2 584.6 140.4<br />
18 mesh 371.4 1867.3 1495.9<br />
30 mesh 444.5 745.2 300.7<br />
50 mesh 408.4 660.8 252.4<br />
100 mesh 383.9 467.5 83.6<br />
200 mesh 379.0 434.4 55.4<br />
Pan 343.1 366.9 23.8<br />
Total Stack (calc) 3481.0 5986.2 2505.2<br />
Total Stack (weighed) 3478.7 5984.1 2505.4<br />
.<br />
Silt Calculation<br />
Total stack 5984.1<br />
Tare stack 3478.7<br />
Total sample 2505.4<br />
Total silt 23.8<br />
Silt % 0.95<br />
A-6