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USGS NEW MEXICO LABORATORY
Fine Sediment Separation Results
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. 
Reported laboratory results percent difference = (((Reported value - Target value)/(Target value)) * 100).
    Fine Material Mass Results
Class Sample Target Fine Median Percent  Lower Control Reported Laboratory  Upper Control
  Id Mass Difference  Limit  Results Percent  Limit 
    Mass (g) (%) (%) Difference (%) (%)
Study 1, 1997 (Jul - Aug)        
1 A2208 0.058 -5.93 -14.51 -13.74 2.65
1 B2332 0.058 -5.93 -14.51 -4.23 2.65
1 C2464 0.058 -5.93 -14.51 -11.86 2.65
2 A2208 0.116 -6.33 -15.27 -5.43 2.61
2 B2332 0.116 -6.33 -15.27 -6.84 2.61
2 C2464 0.116 -6.33 -15.27 -8.05 2.61
3 A1508 2.300 -1.67 -6.36 -5.75 3.02
3 B1632 2.300 -1.67 -6.36 -0.38 3.02
3 C6464 2.700 -1.67 -6.36 -1.11 3.02
   
Study 2, 1997 (Nov - Dec)  
1 A3212 0.058 -6.60 -16.30 -12.14 3.09
1 B3340 0.058 -6.60 -16.30 -13.39 3.09
1 C3468 0.058 -6.60 -16.30 -9.57 3.09
2 A3212 0.116 -6.73 -17.41 -18.98 3.96
2 B3340 0.116 -6.73 -17.41 -9.84 3.96
2 C3468 0.116 -6.73 -17.41 -10.11 3.96
3 A3212 2.300 -2.00 -3.58 -0.41
3 B3340 2.300 -2.00 -3.58 -10.31 -0.41
3 C3468 2.700 -2.00 -3.58 -4.33 -0.41
   
Study 1, 1998 (May - Jun)  
1 A6824 0.058 -7.80 -17.43 -21.64 1.83
1 B6949 0.058 -7.80 -17.43 -40.15 1.83
1 C7080 0.058 -7.80 -17.43 -13.65 1.83
2 A6121 0.116 -7.21 -14.04 -11.27 -0.38
2 B6052 0.116 -7.21 -14.04 -31.81 -0.38
2 C5977 0.116 -7.21 -14.04 -5.23 -0.38
3 A5224 2.300 -2.11 -11.15 -10.11 6.94
3 B7149 2.700 -2.11 -11.15 -7.39 6.94
3 C7280 2.700 -2.11 -11.15 -3.09 6.94
   
Study 2, 1998 (Oct - Dec)  
1 A6824 0.061 -6.19 -24.59 17.04 12.21
1 B6963 0.061 -6.19 -24.59 10.44 12.21
1 C7080 0.061 -6.19 -24.59 3.80 12.21
2 A6121 0.120 -4.82 -15.52 -4.13 5.88
2 B6052 0.120 -4.82 -15.52 2.62 5.88
2 C5977 0.120 -4.82 -15.52 0.91 5.88
3 A1624 2.400 -2.61 -9.15 -3.81 3.94
3 B7149 2.600 -2.61 -9.15 -2.52 3.94
3 C4069 2.600 -2.61 -9.15 -1.69 3.94
   
Study 1, 1999 (Apr - May)  
1 A1886 0.061 -7.01 -18.45 -4.48 4.43
1 B1731 0.061 -7.01 -18.45 -14.19 4.43
1 C4877 0.058 -7.01 -18.45 -10.17 4.43
2 A5455 0.116 -5.46 -12.10 0.18 1.18
2 B5589 0.116 -5.46 -12.10 -6.65 1.18
2 C0965 0.120 -5.46 -12.10 -4.85 1.18
3 A2990 2.400 -3.25 -10.36 -6.41 3.86
3 B2894 2.400 -3.25 -10.36 -8.45 3.86
3 C4378 2.300 -3.25 -10.36 -0.89 3.86
   
Study 2, 1999 (Sep - Oct)  
1 A6704 0.060 -4.30 -16.72 7.54 8.11
1 B6839 0.060 -4.30 -16.72 10.17 8.11
1 C6973 0.060 -4.30 -16.72 3.50 8.11
2 A2506 0.150 -4.90 -11.96 3.25 2.16
2 B2650 0.150 -4.90 -11.96 3.30 2.16
2 C2769 0.150 -4.90 -11.96 2.00 2.16
3 A2702 2.500 -1.40 -6.87 0.50 4.08
3 B6635 2.500 -1.40 -6.87 0.03 4.08
3 C6776 2.500 -1.40 -6.87 0.82 4.08
   
Study 1, 2000 (May - Jun)  
3 A1414 2.200 0.21 -3.65 4.07
3 B2323 2.200 0.21 -3.65 4.07
3 C8181 2.200 0.21 -3.65 4.07
   
Study 2, 2000 (Oct - Nov)  
1 A1111 0.100 14.84 -126.98 99.80 156.66
1 B3838 0.100 14.84 -126.98 -7.78 156.66
1 C6868 0.100 14.84 -126.98 17.68 156.66
2 A0808 0.220 1.74 -49.81 22.99 53.30
2 B6060 0.220 1.74 -49.81 29.18 53.30
2 C6868 0.220 1.74 -49.81 0.22 53.30
3 A0808 2.500 -1.25 -6.34 -0.77 3.83
3 B3838 2.500 -1.25 -6.34 -1.12 3.83
3 C6868 2.500 -1.25 -6.34 -0.19 3.83
   
Study 2, 2001 (Oct - Jan)  
1 A1708 0.080 -3.97 -30.28 -0.53 22.34
1 B4446 0.080 -3.97 -30.28 0.92 22.34
1 C7784 0.080 -3.97 -30.28 -11.20 22.34
2 A0223 0.250 -3.79 -13.27 -3.36 5.69
2 B4436 0.250 -3.79 -13.27 -0.61 5.69
2 C8962 0.250 -3.79 -13.27 -2.26 5.69
3 A2922 2.200 -1.46 -6.53 -2.37 3.62
3 B5047 2.200 -1.46 -6.53 0.10 3.62
3 C7170 2.200 -1.46 -6.53 -0.04 3.62
   
Study 1, 2002 (Jul - Sep)  
1 A0109 0.060 -2.71 -18.16 -2.93 12.74
1 B3936 0.060 -2.71 -18.16 -4.80 12.74
1 C7174 0.060 -2.71 -18.16 -1.98 12.74
2 A0928 0.128 -3.75 -9.71 -3.35 2.21
2 B5137 0.128 -3.75 -9.71 -3.82 2.21
2 C6783 0.128 -3.75 -9.71 -3.33 2.21
3 A1214 2.185 -1.17 -4.14 -0.08 1.81
3 B5738 2.185 -1.17 -4.14 -0.31 1.81
3 C8365 2.185 -1.17 -4.14 -1.20 1.81
   
Study 2, 2002 (Nov - Dec)  
1 A3029 0.065 -2.46 -10.34 -2.61 5.42
1 B4033 0.065 -2.46 -10.34 -4.47 5.42
1 C8172 0.065 -2.46 -10.34 -1.70 5.42
2 A0907 0.105 -3.37 -10.32 -3.71 3.58
2 B5838 0.105 -3.37 -10.32 -4.08 3.58
2 C8367 0.105 -3.37 -10.32 -1.91 3.58
3 A1813 2.222 -0.79 -4.26 -4.08 2.67
3 B3147 2.222 -0.79 -4.26 -0.75 2.67
3 C7989 2.222 -0.79 -4.26 -1.07 2.67
   
Study 1, 2003 (Jun - Aug)  
1 A3812 0.090 -5.14 -12.32 -3.76 2.04
1 B2520 0.090 -5.14 -12.32 -1.59 2.04
1 C3215 0.090 -5.14 -12.32 -3.52 2.04
2 A4929 0.185 -3.36 -8.25 -3.95 1.53
2 B3714 0.185 -3.36 -8.25 -2.12 1.53
2 C5505 0.185 -3.36 -8.25 -4.85 1.53
3 A5939 2.700 -1.03 -3.14 -3.15 1.08
3 B5540 2.700 -1.03 -3.14 -0.89 1.08
3 C6059 2.700 -1.03 -3.14 -0.65 1.08
   
Study 2, 2003 (Dec - Feb)  
1 A4627 0.050 -2.70 -13.09 0.00 7.70
1 B4829 0.050 -2.70 -13.09 -1.18 7.70
1 C6008 0.050 -2.70 -13.09 -0.20 7.70
2 A5127 0.280 -2.32 -6.05 -1.43 1.41
2 B2629 0.280 -2.32 -6.05 -2.57 1.41
2 C3137 0.280 -2.32 -6.05 -2.35 1.41
3 A5851 2.800 -0.44 -2.61 -2.04 1.73
3 B1219 2.800 -0.44 -2.61 -10.32 1.73
3 C0349 2.800 -0.44 -2.61 -5.88 1.73
   
Study 1, 2004 (Jun - Jul)  
1 A4329 0.090 -3.86 -11.17 -5.31 3.44
1 B4160 0.090 -3.86 -11.17 -5.52 3.44
1 C3352 0.090 -3.86 -11.17 -5.76 3.44
2 A1812 0.300 -2.06 -5.87 -3.17 1.75
2 B0734 0.300 -2.06 -5.87 -2.71 1.75
2 C2325 0.300 -2.06 -5.87 -2.77 1.75
3 A3401 2.200 -0.81 -4.23 -4.71 2.61
3 B1224 2.200 -0.81 -4.23 -4.03 2.61
3 C4234 2.200 -0.81 -4.23 -5.77 2.61
   
Study 2, 2004 (Nov - Dec)  
1 A2338 0.060 -4.41 -11.97 -4.64 3.14
1 B2841 0.060 -4.41 -11.97 -4.52 3.14
1 C5005 0.060 -4.41 -11.97 -6.29 3.14
2 A1159 0.250 -3.45 -8.36 -8.61 1.46
2 B2636 0.250 -3.45 -8.36 -4.03 1.46
2 C2302 0.250 -3.45 -8.36 -3.25 1.46
3 A2229 2.400 -1.51 -4.31 -9.33 1.30
3 B6966 2.400 -1.51 -4.31 -8.87 1.30
3 C5551 2.400 -1.51 -4.31 -9.13 1.30
   
Study 1, 2005 (May - Jul)  
1 A2166 0.100 -7.38 -22.51 -8.89 7.75
1 B6053 0.100 -7.38 -22.51 -13.19 7.75
1 C6316 0.100 -7.38 -22.51 -10.56 7.75
2 A4270 0.200 -8.95 -31.95 -9.14 14.05
2 B5017 0.200 -8.95 -31.95 -15.08 14.05
2 C5204 0.200 -8.95 -31.95 -12.92 14.05
3 A0243 3.000 -1.90 -6.25 -7.82 2.46
3 B2032 3.000 -1.90 -6.25 -6.58 2.46
3 C0934 3.000 -1.90 -6.25 -8.40 2.46
   
Study 2, 2005 (Nov - Dec)  
1 A6453 0.134 -4.94 -23.19 -22.91 13.31
1 B4762 0.134 -4.94 -23.19 -25.32 13.31
1 C2138 0.134 -4.94 -23.19 -15.05 13.31
2 A1903 3.300 -1.39 -4.23 -21.44 1.46
2 B4066 3.300 -1.39 -4.23 -13.96 1.46
2 C4460 3.300 -1.39 -4.23 -19.50 1.46
3 A7721 9.690 -2.05 -7.14 -6.11 3.04
3 B3744 9.690 -2.05 -7.14 -6.28 3.04
3 C2213 9.690 -2.05 -7.14 -6.41 3.04
   
Study 1, 2006 (May - Jun)  
1 A2256 0.070 -9.10 -30.60 -14.32 12.50
1 B6621 0.070 -9.10 -30.60 -8.57 12.50
1 C6122 0.070 -9.10 -30.60 -10.01 12.50
2 A0328 0.900 -7.30 -48.60 -5.86 34.00
2 B3335 0.900 -7.30 -48.60 -13.19 34.00
2 C7606 0.900 -7.30 -48.60 -9.57 34.00
3 A6058 4.200 -1.60 -6.90 -6.32 3.70
3 B7548 4.200 -1.60 -6.90 -6.39 3.70
3 C3980 4.200 -1.60 -6.90 -3.25 3.70
   
Study 2, 2006 (Oct - Nov)  
1 A5031 0.062 -8.30 -26.70 -7.22 10.00
1 B3172 0.062 -8.30 -26.70 -7.80 10.00
1 C6213 0.062 -8.30 -26.70 -8.68 10.00
2 A4565 0.600 -6.80 -24.20 -5.42 10.70
2 B3215 0.600 -6.80 -24.20 -5.71 10.70
2 C4666 0.600 -6.80 -24.20 -6.52 10.70
3 A6726 4.000 -0.50 -6.60 -2.17 5.60
3 B6155 4.000 -0.50 -6.60 -1.81 5.60
3 C4724 4.000 -0.50 -6.60 -1.37 5.60
   
Study 1, 2007 (Apr - May)  
   
1 A1030 0.075 -3.87 -8.31 -4.55 0.57
1 B7250 0.075 -3.87 -8.31 -4.39 0.57
1 C5007 0.075 -3.87 -8.31 -4.49 0.57
2 A0421 1.700 -0.77 -2.46 -1.20 0.93
2 B1270 1.700 -0.77 -2.46 -1.35 0.93
2 C6176 1.700 -0.77 -2.46 -15.37 0.93
3 A5033 4.100 -1.22 -4.92 -2.62 2.48
3 B3578 4.100 -1.22 -4.92 -3.10 2.48
3 C0975 4.100 -1.22 -4.92 -3.76 2.48
   
Study 2, 2007 (Nov - Dec)  
   
1 A5153 0.055 -6.83 -23.39 -9.80 9.73
1 B5917 0.055 -6.83 -23.39 -14.42 9.73
1 C2037 0.055 -6.83 -23.39 -9.39 9.73
2 A3911 0.500 -3.40 -11.08 -9.63 4.28
2 B0716 0.500 -3.40 -11.08 -2.24 4.28
2 C6266 0.500 -3.40 -11.08 -7.99 4.28
3 A5243 4.150 -0.48 -2.73 -1.84 1.77
3 B6076 4.150 -0.48 -2.73 -1.23 1.77
3 C1956 4.150 -0.48 -2.73 -0.82 1.77
   
Study 1, 2008 (May - Jun)  
   
1 A1169 0.045 -5.25 -17.09 -13.99 6.60
1 B3167 0.045 -5.25 -17.09 -7.80 6.60
1 C3042 0.045 -5.25 -17.09 -6.82 6.60
2 A1615 0.400 -2.02 -5.82 -4.52 1.80
2 B6733 0.400 -2.02 -5.82 -4.27 1.80
2 C3158 0.400 -2.02 -5.82 -3.96 1.80
3 A0809 4.250 -0.22 -2.99 -2.08 2.55
3 B3265 4.250 -0.22 -2.99 -1.91 2.55
3 C5855 4.250 -0.22 -2.99 -1.83 2.55
NM Sand Separation NM Sediment Mass Results NM Suspended Sediment Concentration