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USGS HAWAII (HI) LABORATORY
Suspended Sediment Concentration 
Results include determination of suspended sediment concentration. 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).
    Suspended Sediment Concentration Results
Class Sample Id Target Suspended Median Percent  Lower Control Reported Laboratory  Upper Control
  Sediment  Difference  Limit  Results Percent  Limit 
    Concentration (mg/L) (%) (%) Difference (%) (%)
Study 1, 1997 (Jul - Aug)  
1 A0402 256 -3.60 -13.21 -4.54 6.01
1 B0538 275 -3.60 -13.21 -5.02 6.01
1 C0658 187 -3.60 -13.21 -3.49 6.01
2 A0402 504 -3.38 -14.40 -4.04 7.64
2 B0538 528 -3.38 -14.40 -2.65 7.64
2 C0658 353 -3.38 -14.40 -3.18 7.64
3 A0302 10764 -0.36 -8.85 -8.12 8.13
3 B0438 11402 -0.36 -8.85 -3.53 8.13
3 C5858 7561 -0.36 -8.85 -4.24 8.13
   
Study 2, 1997 (Nov - Dec)  
1 A146 264 -2.91 -10.81 -2.42 4.99
1 B1534 268 -2.91 -10.81 -2.61 4.99
1 C1662 186 -2.91 -10.81 -8.72 4.99
2 A146 495 -3.77 -13.12 -2.59 5.59
2 B1534 536 -3.77 -13.12 -2.50 5.59
2 C1662 356 -3.77 -13.12 -2.88 5.59
3 A146 10773 -0.72 -3.81 -2.53 2.38
3 B1534 11411 -0.72 -3.81 -5.36 2.38
3 C1662 6558 -0.72 -3.81 -4.24 2.38
   
Study 1, 1998 (May - Jun)  
1 A5018 185 -4.86 -16.80 -4.01 7.09
1 B5155 169 -4.86 -16.80 -6.06 7.09
1 C5274 249 -4.86 -16.80 -3.21 7.09
2 A7927 355 -5.48 -17.52 -0.96 6.55
2 B7846 329 -5.48 -17.52 -2.81 6.55
2 C7783 474 -5.48 -17.52 -3.23 6.55
3 A1018 7689 -1.27 -16.04 -7.92 13.50
3 B5955 8129 -1.27 -16.04 -8.47 13.50
3 C6074 10080 -1.27 -16.04 -0.79 13.50
   
Study 2, 1998 (Oct - Dec)  
1 A5018 91 -2.06 -17.51 -5.15 13.40
1 B5157 203 -2.06 -17.51 0.25 13.40
1 C5274 271 -2.06 -17.51 -14.29 13.40
2 A7927 170 -2.38 -11.60 -2.58 6.83
2 B7846 354 -2.38 -11.60 0.07 6.83
2 C7783 504 -2.38 -11.60 -2.38 6.83
3 A1018 3618 -0.28 -3.08 -0.50 2.52
3 B5955 8126 -0.28 -3.08 -0.07 2.52
3 C6074 9105 -0.28 -3.08 -1.04 2.52
   
Study 1, 1999 (Apr - May)  
1 A0403 282 -2.19 -13.76 -1.28 9.38
1 B0534 292 -2.19 -13.76 -0.68 9.38
1 C4271 147 -2.19 -13.76 -5.02 9.38
2 A4243 536 -2.97 -9.67 -3.66 3.72
2 B4374 573 -2.97 -9.67 -2.48 3.72
2 C0358 302 -2.97 -9.67 0.93 3.72
3 A0562 10129 -0.43 -4.07 -0.78 3.22
3 B0403 10853 -0.43 -4.07 0.25 3.22
3 C3772 5247 -0.43 -4.07 -0.66 3.22
   
Study 2, 1999 (Sep - Oct)  
1 A0436 336 -2.54 -16.98 -5.36 11.90
1 B0505 336 -2.54 -16.98 -4.17 11.90
1 C0669 291 -2.54 -16.98 -14.72 11.90
2 A0407 801 -1.25 -11.52 0.31 9.02
2 B0532 877 -1.25 -11.52 -0.34 9.02
2 C0662 742 -1.25 -11.52 -2.07 9.02
3 A0604 14057 -0.71 -4.22 -1.11 2.79
3 B0732 14584 -0.71 -4.22 35.08 2.79
3 C0862 12371 -0.71 -4.22 -1.38 2.79
   
Study 1, 2000 (May - Jun)  
1 A0202 441 -2.87 -11.78 -3.06 6.03
1 B3232 460 -2.87 -11.78 -3.26 6.03
1 C6262 372 -2.87 -11.78 9.41 6.03
2 A0202 1125 -1.63 -8.81 -35.73 5.56
2 B3232 1030 -1.63 -8.81 12.56 5.56
2 C6262 980 -1.63 -8.81 4.65 5.56
3 A0606 12646 -0.05 -3.89 -1.07 3.80
3 B3232 13202 -0.05 -3.89 -1.30 3.80
3 C6262 11020 -0.05 -3.89 -2.36 3.80
   
Study 2, 2000 (Oct - Nov)  
1 A0505 561 10.49 -105.07 46.70 126.05
1 B3232 582 10.49 -105.07 -13.23 126.05
1 C6262 417 10.49 -105.07 91.13 126.05
2 A1717 1274 2.06 -45.61 43.64 49.72
2 B3232 1292 2.06 -45.61 6.04 49.72
2 C6262 919 2.06 -45.61 18.67 49.72
3 A0202 13928 -0.92 -5.78 -0.92 3.93
3 B3232 14542 -0.92 -5.78 -1.66 3.93
3 C6262 10420 -0.92 -5.78 -0.19 3.93
HI Sediment Mass Results