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-5. Laboratory Silt Analysis of Winter 2001 Apple St. Sample<br />
Sample ID: RS565<br />
Composite: Gross Weight Tape<br />
BOISL004 240.7 clear<br />
BOISL005 231.6 clear<br />
BOISL006 272.1 red duct<br />
Total 744.4<br />
Sieving:<br />
pan sample diff % diff<br />
Tare 343.1<br />
20 min 440.8 97.7<br />
30 min 453.5 110.4 12.7 11.5<br />
40 min 457.4 114.3 3.9 3.4<br />
Mass Determination<br />
Screen Tare weight (g) Final Weight(g) Net weight(g)<br />
Lid 215.9 215.4 -0.5<br />
1/4 inch 488.7 492.6 3.9<br />
4 mesh 444.0 446.7 2.7<br />
18 mesh 369.9 505.5 135.6<br />
30 mesh 444.7 505.8 61.1<br />
50 mesh 409.0 510.5 101.5<br />
100 mesh 383.8 468.7 84.9<br />
200 mesh 379.2 473.6 94.4<br />
Pan 343.1 457.4 114.3<br />
Total Stack 3479.0 3979.8 500.8<br />
Total Stack (with sample) 3979.9<br />
Total Stack (calc) 3478.3 4076.2<br />
.<br />
Silt Calculation<br />
Total stack 3979.8<br />
Tare stack 3479.0<br />
Total sample 500.8<br />
Total silt 114.3<br />
% Silt (