11.07.2014 Views

treasure valley road dust study: final report - ResearchGate

treasure valley road dust study: final report - ResearchGate

treasure valley road dust study: final report - ResearchGate

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

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

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!