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treasure valley road dust study: final report - ResearchGate

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Table A-8. Laboratory Silt Analysis of Summer 2001 13th St. Sample<br />

Date: 8/27/01<br />

Technician:KAS<br />

Project:BOISE<br />

Sample<br />

ID:RS624<br />

BOISL045,046,047<br />

Gross weight of sample 391.6____________<br />

Sieving:<br />

pan sample diff % diff<br />

Tare 698.4<br />

20 min 725.2 26.8<br />

30 min 726.9 28.5 1.7 6.0<br />

40 min 0 -698.4 -726.9 104.1<br />

Mass Determination<br />

.<br />

Screen<br />

Tare weight (g) Final Weight(g) Sample weight(g)<br />

Lid 216 216 0<br />

1/4 inch 488.9 489.1 0.2<br />

4 mesh 445.8 445.9 0.1<br />

18 mesh 368.9 394.2 25.3<br />

30 mesh 443 477 34<br />

50 mesh 408.6 450.6 42<br />

100 mesh 383.8 413.9 30.1<br />

200 mesh 379.1 413.2 34.1<br />

Pan (+400*) 698.4 727.2 28.8<br />

Total Stack 3832.7 4027.1 194.4<br />

Total Stack+sample 4027.3<br />

Silt Calculation<br />

Total stack 4027.1<br />

Tare stack 3832.7<br />

Total sample 194.4<br />

Silt (

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