| USGS WATER, ENERGY, AND BIOGEOCHEMICAL BUDGETS (WEBB) LABORATORY |
|
| Sand Separation
Results |
|
|
|
|
| Results include
determination of sand 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. |
|
|
|
|
| Reported
laboratory results percent difference = (((Reported value - Target
value)/(Target value)) * 100). |
|
|
|
|
|
|
|
|
| |
|
Sand
Material Mass Results |
| Class |
Sample |
Target Sand |
Median Percent |
Lower Control |
Reported Laboratory |
Upper Control |
| |
Id |
Mass |
Difference |
Limit |
Results Percent |
Limit |
| |
|
(g) |
(%) |
(%) |
Difference (%) |
(%) |
| Study 2, 1998
(Oct - Dec) |
|
|
|
|
| 1 |
A4014 |
0.009 |
14.08 |
-18.10 |
|
46.27 |
| 1 |
B3942 |
0.013 |
14.08 |
-18.10 |
20.68 |
46.27 |
| 1 |
C3870 |
0.020 |
14.08 |
-18.10 |
|
46.27 |
| 2 |
A4014 |
0.010 |
10.78 |
-23.17 |
|
44.73 |
| 2 |
B3942 |
0.022 |
10.78 |
-23.17 |
12.12 |
44.73 |
| 2 |
C3870 |
0.032 |
10.78 |
-23.17 |
|
44.73 |
| 3 |
A4314 |
0.312 |
10.66 |
-26.99 |
11.51 |
48.30 |
| 3 |
B4242 |
0.648 |
10.66 |
-26.99 |
4.98 |
48.30 |
| 3 |
C4170 |
0.130 |
10.66 |
-26.99 |
|
48.30 |
| |
|
|
|
|
|
|
| Study 1, 1999
(Apr - May) |
|
|
|
|
| 1 |
A3385 |
0.009 |
12.30 |
-34.46 |
|
59.06 |
| 1 |
B3448 |
0.013 |
12.30 |
-34.46 |
|
59.06 |
| 1 |
C5686 |
0.016 |
12.30 |
-34.46 |
|
59.06 |
| 2 |
A7454 |
0.017 |
-0.64 |
-12.25 |
|
10.98 |
| 2 |
B7383 |
0.027 |
-0.64 |
-12.25 |
|
10.98 |
| 2 |
C1888 |
0.032 |
-0.64 |
-12.25 |
|
10.98 |
| 3 |
A5187 |
0.130 |
15.92 |
-28.32 |
|
60.16 |
| 3 |
B5293 |
0.312 |
15.92 |
-28.32 |
16.63 |
60.16 |
| 3 |
C5188 |
0.324 |
15.92 |
-28.32 |
|
60.16 |
| |
|
|
|
|
|
|
| Study 2, 1999
(Sep - Oct) |
|
|
|
|
| 1 |
A4317 |
0.009 |
2.89 |
-54.71 |
|
60.50 |
| 1 |
B4443 |
0.006 |
2.89 |
-54.71 |
|
60.50 |
| 1 |
C4575 |
0.012 |
2.89 |
-54.71 |
|
60.50 |
| 2 |
A4340 |
0.015 |
4.94 |
-23.20 |
|
33.08 |
| 2 |
B4412 |
0.023 |
4.94 |
-23.20 |
|
33.08 |
| 2 |
C4575 |
0.030 |
4.94 |
-23.20 |
|
33.08 |
| 3 |
A4511 |
0.300 |
0.49 |
-7.41 |
2.08 |
8.39 |
| 3 |
B4643 |
0.425 |
0.49 |
-7.41 |
2.40 |
8.39 |
| 3 |
C4767 |
0.600 |
0.49 |
-7.41 |
2.38 |
8.39 |
| |
|
|
|
|
|
|
| Study 1, 2000
(May - Jun) |
|
|
|
|
| 1 |
A1414 |
0.008 |
0.21 |
-28.62 |
|
29.04 |
| 1 |
B4444 |
0.012 |
0.21 |
-28.62 |
|
29.04 |
| 1 |
C7474 |
0.016 |
0.21 |
-28.62 |
|
29.04 |
| 2 |
A1414 |
0.024 |
0.18 |
-10.94 |
|
11.31 |
| 2 |
B4545 |
0.034 |
0.18 |
-10.94 |
|
11.31 |
| 2 |
C7373 |
0.044 |
0.18 |
-10.94 |
|
11.31 |
| 3 |
A2020 |
0.330 |
-4.01 |
-15.98 |
0.27 |
7.97 |
| 3 |
B4444 |
0.330 |
-4.01 |
-15.98 |
0.22 |
7.97 |
| 3 |
C7474 |
0.330 |
-4.01 |
-15.98 |
|
7.97 |
| |
|
|
|
|
|
|
| Study 2, 2000
(Oct - Nov) |
|
|
|
|
| 1 |
A1717 |
0.012 |
-0.37 |
-24.81 |
|
24.08 |
| 1 |
B4444 |
0.017 |
-0.37 |
-24.81 |
|
24.08 |
| 1 |
C7474 |
0.025 |
-0.37 |
-24.81 |
|
24.08 |
| 2 |
A1414 |
0.033 |
-1.88 |
-27.47 |
|
23.71 |
| 2 |
B4444 |
0.037 |
-1.88 |
-27.47 |
|
23.71 |
| 2 |
C7474 |
0.055 |
-1.88 |
-27.47 |
|
23.71 |
| 3 |
A1414 |
0.300 |
0.08 |
-8.82 |
-2.18 |
8.97 |
| 3 |
B4444 |
0.425 |
0.08 |
-8.82 |
1.10 |
8.97 |
| 3 |
C7474 |
0.625 |
0.08 |
-8.82 |
0.86 |
8.97 |
| |
|
|
|
|
|
|
| Study 1, 2001
(Jul - Sep) |
|
|
|
|
| 1 |
A2020 |
0.015 |
0.68 |
-28.15 |
-8.00 |
29.51 |
| 1 |
B5050 |
0.017 |
0.68 |
-28.15 |
|
29.51 |
| 1 |
C8080 |
0.025 |
0.68 |
-28.15 |
|
29.51 |
| 2 |
A1104 |
0.045 |
0.66 |
-9.12 |
|
10.45 |
| 2 |
B5056 |
0.051 |
0.66 |
-9.12 |
|
10.45 |
| 2 |
C7164 |
0.075 |
0.66 |
-9.12 |
|
10.45 |
| 3 |
A0702 |
0.312 |
2.41 |
-11.48 |
5.93 |
16.30 |
| 3 |
B3139 |
0.408 |
2.41 |
-11.48 |
|
16.30 |
| 3 |
C8976 |
0.600 |
2.41 |
-11.48 |
25.45 |
16.30 |
| |
|
|
|
|
|
|
| Study 2, 2001
(Oct - Jan) |
|
|
|
|
| 1 |
A0421 |
0.011 |
10.40 |
-57.78 |
|
78.58 |
| 1 |
B5541 |
0.014 |
10.40 |
-57.78 |
|
78.58 |
| 1 |
C8662 |
0.018 |
10.40 |
-57.78 |
|
78.58 |
| 2 |
A2130 |
0.033 |
4.25 |
-11.06 |
|
19.55 |
| 2 |
B5555 |
0.040 |
4.25 |
-11.06 |
|
19.55 |
| 2 |
C7087 |
0.060 |
4.25 |
-11.06 |
|
19.55 |
| 3 |
A1014 |
0.264 |
2.86 |
-12.76 |
7.51 |
18.49 |
| 3 |
B4931 |
0.396 |
2.86 |
-12.76 |
3.23 |
18.49 |
| 3 |
C6263 |
0.550 |
2.86 |
-12.76 |
3.18 |
18.49 |
| |
|
|
|
|
|
|
| WEBB laboratory
ceased analyzing SLQA samples for fine/sand separation after 2001. |
|
|
|
|
|
|
|
|
| WEBB Fine Separation |
WEBB Sediment Mass Results |
WEBB Suspended Sediment Concentration |
|
|
|
|
|
|
|
