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treasure valley road dust study: final report - ResearchGate

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Table A-23. Laboratory Silt Analysis of Summer 2001 Cloverdale Farm Road Sample<br />

Date:8/29/01<br />

Technician:KAS<br />

Project:BOISE<br />

Sample<br />

BOISL076,077,078<br />

Gross weight of sample ____________<br />

ID:RS632<br />

Sieving:<br />

pan sample diff % diff<br />

Tare 698.5<br />

20 min 743.5 45<br />

30 min 759.2 60.7 15.7 25.9<br />

40 min 779.6 81.1 20.4 25.2<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 488.9 769.2 280.3<br />

4 mesh 445.6 512.5 66.9<br />

18 mesh 369.3 1379.7 1010.4<br />

30 mesh 443 685.1 242.1<br />

50 mesh 408.2 614.9 206.7<br />

100 mesh 383.6 423.5 39.9<br />

200 mesh 378.8 427.6 48.8<br />

Pan (+400*) 698.5 779.6 81.1<br />

Total Stack 3833 5808.1 1975.1<br />

Total Stack+sample 5807.8<br />

Silt Calculation<br />

Total stack 5808.1<br />

Tare stack 3833<br />

Total sample 1975.1<br />

Silt (

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