| USGS WATER, ENERGY, AND BIOGEOCHEMICAL BUDGETS (WEBB) LABORATORY |
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| Fine Sediment
Separation Results |
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| Results
include determination of fine material (<0.063 mm) mass for each SLQA
study. A highlighted value exceeds study's |
| control
limits, for a specific size class. Laboratories analyze 9 samples in each
study. Target values are determined |
| gravimetrically
during sample preparation.Median percent differences are calculated using all
submitted analyses by |
| participants
for each sample class. Upper and lower control limits are +/-3 f-pseudosigma
from median, respectively. |
| F-pseudosigma =
(Interquartile range)/1.349. |
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| Reported
laboratory results percent difference = (((Reported value - Target
value)/(Target value)) * 100). |
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Fine
Material Mass Results |
| Class |
Sample |
Target Fine |
Median Percent |
Lower Control |
Reported Laboratory |
Upper Control |
| |
Id |
Material |
Difference |
Limit |
Results Percent |
Limit |
| |
|
Mass (g) |
(%) |
(%) |
Difference (%) |
(%) |
| Study 2, 1998
(Oct - Dec) |
|
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|
|
| 1 |
A4014 |
0.061 |
-6.19 |
-24.59 |
|
12.21 |
| 1 |
B3942 |
0.061 |
-6.19 |
-24.59 |
-7.85 |
12.21 |
| 1 |
C3870 |
0.061 |
-6.19 |
-24.59 |
|
12.21 |
| 2 |
A4014 |
0.120 |
-4.82 |
-15.52 |
|
5.88 |
| 2 |
B3942 |
0.120 |
-4.82 |
-15.52 |
-5.88 |
5.88 |
| 2 |
C3870 |
0.120 |
-4.82 |
-15.52 |
|
5.88 |
| 3 |
A4314 |
2.400 |
-2.61 |
-9.15 |
-2.70 |
3.94 |
| 3 |
B4242 |
2.600 |
-2.61 |
-9.15 |
-2.40 |
3.94 |
| 3 |
C4170 |
2.600 |
-2.61 |
-9.15 |
|
3.94 |
| |
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| Study 1, 1999
(Apr - May) |
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| 1 |
A3385 |
0.061 |
-7.01 |
-18.45 |
|
4.43 |
| 1 |
B3448 |
0.061 |
-7.01 |
-18.45 |
|
4.43 |
| 1 |
C5686 |
0.058 |
-7.01 |
-18.45 |
|
4.43 |
| 2 |
A7454 |
0.116 |
-5.46 |
-12.10 |
|
1.18 |
| 2 |
B7383 |
0.116 |
-5.46 |
-12.10 |
|
1.18 |
| 2 |
C1888 |
0.120 |
-5.46 |
-12.10 |
|
1.18 |
| 3 |
A5187 |
2.400 |
-3.25 |
-10.36 |
|
3.86 |
| 3 |
B5293 |
2.400 |
-3.25 |
-10.36 |
-3.57 |
3.86 |
| 3 |
C5188 |
2.300 |
-3.25 |
-10.36 |
|
3.86 |
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| Study 2, 1999
(Sep - Oct) |
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| 1 |
A4317 |
0.060 |
-4.30 |
-16.72 |
|
8.11 |
| 1 |
B4443 |
0.060 |
-4.30 |
-16.72 |
|
8.11 |
| 1 |
C4575 |
0.060 |
-4.30 |
-16.72 |
|
8.11 |
| 2 |
A4340 |
0.150 |
-4.90 |
-11.96 |
|
2.16 |
| 2 |
B4412 |
0.150 |
-4.90 |
-11.96 |
|
2.16 |
| 2 |
C4575 |
0.150 |
-4.90 |
-11.96 |
|
2.16 |
| 3 |
A4511 |
2.500 |
-1.40 |
-6.87 |
-1.36 |
4.08 |
| 3 |
B4643 |
2.500 |
-1.40 |
-6.87 |
-1.43 |
4.08 |
| 3 |
C4767 |
2.500 |
-1.40 |
-6.87 |
-2.03 |
4.08 |
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| Study 1, 2000
(May - Jun) |
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| 1 |
A1414 |
0.080 |
-4.49 |
-13.45 |
|
4.46 |
| 1 |
B4444 |
0.080 |
-4.49 |
-13.45 |
|
4.46 |
| 1 |
C7474 |
0.080 |
-4.49 |
-13.45 |
|
4.46 |
| 2 |
A1414 |
0.200 |
-3.10 |
-11.51 |
|
5.32 |
| 2 |
B4545 |
0.200 |
-3.10 |
-11.51 |
|
5.32 |
| 2 |
C7373 |
0.200 |
-3.10 |
-11.51 |
|
5.32 |
| 3 |
A2020 |
2.200 |
0.21 |
-3.65 |
-0.92 |
4.07 |
| 3 |
B4444 |
2.200 |
0.21 |
-3.65 |
-0.65 |
4.07 |
| 3 |
C7474 |
2.200 |
0.21 |
-3.65 |
|
4.07 |
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| Study 2, 2000
(Oct - Nov) |
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| 1 |
A1717 |
0.100 |
14.84 |
-126.98 |
|
156.66 |
| 1 |
B4444 |
0.100 |
14.84 |
-126.98 |
|
156.66 |
| 1 |
C7474 |
0.100 |
14.84 |
-126.98 |
|
156.66 |
| 2 |
A1414 |
0.220 |
1.74 |
-49.81 |
|
53.30 |
| 2 |
B4444 |
0.220 |
1.74 |
-49.81 |
|
53.30 |
| 2 |
C7474 |
0.220 |
1.74 |
-49.81 |
|
53.30 |
| 3 |
A1414 |
2.500 |
-1.25 |
-6.34 |
-1.39 |
3.83 |
| 3 |
B4444 |
2.500 |
-1.25 |
-6.34 |
1.68 |
3.83 |
| 3 |
C7474 |
2.500 |
-1.25 |
-6.34 |
-5.74 |
3.83 |
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| Study 1, 2001
(Jul - Sep) |
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| 1 |
A2020 |
0.100 |
-3.85 |
-9.98 |
-4.15 |
2.29 |
| 1 |
B5050 |
0.100 |
-3.85 |
-9.98 |
|
2.29 |
| 1 |
C8080 |
0.100 |
-3.85 |
-9.98 |
|
2.29 |
| 2 |
A1104 |
0.300 |
-2.74 |
-7.03 |
|
1.55 |
| 2 |
B5056 |
0.300 |
-2.74 |
-7.03 |
|
1.55 |
| 2 |
C7164 |
0.300 |
-2.74 |
-7.03 |
|
1.55 |
| 3 |
A0702 |
2.400 |
-1.45 |
-6.51 |
-1.73 |
3.60 |
| 3 |
B3139 |
2.400 |
-1.45 |
-6.51 |
|
3.60 |
| 3 |
C8976 |
2.400 |
-1.45 |
-6.51 |
-1.61 |
3.60 |
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| Study 2, 2001
(Oct - Jan) |
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| 1 |
A0421 |
0.080 |
-3.97 |
-30.28 |
|
22.34 |
| 1 |
B5541 |
0.080 |
-3.97 |
-30.28 |
|
22.34 |
| 1 |
C8662 |
0.080 |
-3.97 |
-30.28 |
|
22.34 |
| 2 |
A2130 |
0.250 |
-3.79 |
-13.27 |
|
5.69 |
| 2 |
B5555 |
0.250 |
-3.79 |
-13.27 |
|
5.69 |
| 2 |
C7087 |
0.250 |
-3.79 |
-13.27 |
|
5.69 |
| 3 |
A1014 |
2.200 |
-1.46 |
-6.53 |
-1.88 |
3.62 |
| 3 |
B4931 |
2.200 |
-1.46 |
-6.53 |
-1.69 |
3.62 |
| 3 |
C6263 |
2.200 |
-1.46 |
-6.53 |
-2.18 |
3.62 |
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| WEBB laboratory
ceased analyzing SLQA samples for fine/sand separation after 2001. |
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WEBB Sand Separation |
WEBB Sediment Mass Results |
WEBB Suspended Sediment Concentration |
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