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HEIDELBERG COLLEGE (OH) LABORATORY - contract for USGS
Sediment Mass Results
Results include determination of sediment mass. 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).
    Sediment Mass Results
Class Sample Target Sediment Median Percent  Lower Control Reported Laboratory  Upper Control
  Id Mass  Difference  Limit  Results Percent  Limit 
    (gm) (%) (%) Difference (%) (%)
Study 1, 1997 (Jul - Aug)  
1 A2509 0.0638 -4.40 -14.90 -4.55 6.10
1 B2631 0.0693 -4.40 -14.90 -6.93 6.10
1 C2765 0.0727 -4.40 -14.90 -5.36 6.10
2 A2509 0.1269 -5.10 -16.71 -5.04 6.51
2 B2631 0.1330 -5.10 -16.71 -3.83 6.51
2 C2765 0.1436 -5.10 -16.71 -5.22 6.51
3 A1709 2.6895 -1.84 -14.68 -0.71 11.00
3 B1831 2.8516 -1.84 -14.68 -2.01 11.00
3 C6565 3.0227 -1.84 -14.68 -1.25 11.00
   
Study 2, 1997 (Nov - Dec)  
1 A3513 0.0657 -4.54 -13.05 -6.39 3.97
1 B3641 0.0682 -4.54 -13.05 -0.88 3.97
1 C3769 0.0738 -4.54 -13.05 -1.90 3.97
2 A3513 0.1244 -4.77 -13.18 -4.34 3.65
2 B3641 0.1344 -4.77 -13.18 -9.15 3.65
2 C3769 0.1449 -4.77 -13.18 -6.00 3.65
3 A3513 2.6902 -1.38 -3.93 -1.10 1.18
3 B3641 2.8522 -1.38 -3.93 -1.27 1.18
3 C3769 2.6238 -1.38 -3.93 -1.86 1.18
   
Study 1, 1998 (May - Jun)  
1 A7426 0.0645 -5.15 -12.89 -6.67 2.58
1 B7547 0.0689 -5.15 -12.89 -7.11 2.58
1 C7682 0.0743 -5.15 -12.89 -3.63 2.58
2 A5519 0.1252 -4.82 -13.31 -7.91 3.66
2 B5454 0.1315 -4.82 -13.31 -13.23 3.66
2 C5375 0.1432 -4.82 -13.31 -3.84 3.66
3 A5426 2.6932 -1.70 -6.98 -2.01 3.59
3 B7547 3.2581 -1.70 -6.98 -1.72 3.59
3 C7682 3.0299 -1.70 -6.98 -1.55 3.59
   
Study 2, 1998 (Oct - Dec)  
1 A7426 0.0692 -3.28 -18.43 -6.94 11.87
1 B7565 0.0829 -3.28 -18.43 -7.96 11.87
1 C7682 0.0816 -3.28 -18.43 -7.11 11.87
2 A5519 0.1278 -3.91 -11.54 -4.23 3.71
2 B5454 0.1404 -3.91 -11.54 -2.92 3.71
2 C5375 0.1533 -3.91 -11.54 -4.44 3.71
3 A1826 2.7142 -1.00 -3.58 -2.99 1.57
3 B7547 3.0480 -1.00 -3.58 5.09 1.57
3 C7682 2.7309 -1.00 -3.58 -1.55 1.57
   
Study 1, 1999 (Apr - May)  
1 A2406 0.0683 -3.90 -13.19 -2.93 5.39
1 B2337 0.0749 -3.90 -13.19 -7.21 5.39
1 C5180 0.0740 -3.90 -13.19 -7.43 5.39
2 A6444 0.1326 -4.51 -8.94 -4.90 -0.09
2 B6373 0.1424 -4.51 -8.94 -5.20 -0.09
2 C1368 0.1491 -4.51 -8.94 -4.16 -0.09
3 A3461 2.5295 -1.24 -3.28 -1.64 0.80
3 B3504 2.7119 -1.24 -3.28 -3.17 0.80
3 C4681 2.6235 -1.24 -3.28 -2.18 0.80
   
Study 2, 1999 (Sep - Oct)  
1 A3144 0.0688 -3.67 -15.00 -6.83 7.66
1 B3219 0.0689 -3.67 -15.00 -10.45 7.66
1 C3382 0.0686 -3.67 -15.00 -4.37 7.66
2 A3111 0.1567 -3.25 -12.78 -3.77 6.29
2 B3271 0.1764 -3.25 -12.78 -1.98 6.29
2 C3342 0.1629 -3.25 -12.78 -3.87 6.29
3 A3305 2.7936 -0.75 -4.59 -0.69 3.08
3 B3441 2.9215 -0.75 -4.59 -0.36 3.08
3 C3565 3.0977 -0.75 -4.59 -0.79 3.08
   
Study 1, 2000 (May - Jun)  
1 A1010 0.0882 -4.36 -10.87 -4.08 2.16
1 B4040 0.0921 -4.36 -10.87 -5.75 2.16
1 C7070 0.0966 -4.36 -10.87 -4.97 2.16
2 A1010 0.2251 -3.09 -9.45 -3.33 3.26
2 B4040 0.2339 -3.09 -9.45 -4.23 3.26
2 C7070 0.2442 -3.09 -9.45 -3.93 3.26
3 A1616 2.5302 -0.76 -2.78 -1.19 1.26
3 B4040 2.6388 -0.76 -2.78 -1.05 1.26
3 C7070 2.7515 -0.76 -2.78 -1.00 1.26
   
Study 2, 2000 (Oct - Nov)  
1 A1313 0.1126 13.84 -110.48 -21.40 138.16
1 B4040 0.1189 13.84 -110.48 33.81 138.16
1 C7070 0.1246 13.84 -110.48 32.66 138.16
2 A1010 0.2530 3.70 -47.40 34.31 54.80
2 B4040 0.2578 3.70 -47.40 -5.74 54.80
2 C7070 0.2570 3.70 -47.40 1.01 54.80
3 A1010 2.7770 -1.02 -4.15 -0.70 2.10
3 B4040 2.9246 -1.02 -4.15 -0.91 2.10
3 C7070 3.1290 -1.02 -4.15 -3.73 2.10
   
Study 1, 2001 (Jul - Sep)  
1 A1414 0.1181 -2.82 -10.90 -15.07 5.27
1 B4444 0.1189 -2.82 -10.90 -2.44 5.27
1 C7474 0.1258 -2.82 -10.90 1.67 5.27
2 A1721 0.3455 -2.08 -5.64 -1.79 1.48
2 B4437 0.3511 -2.08 -5.64 -1.25 1.48
2 C7788 0.3756 -2.08 -5.64 -1.49 1.48
3 A2214 2.7129 -0.54 -3.56 0.12 2.49
3 B3634 2.8093 -0.54 -3.56 -0.29 2.49
3 C7179 3.0013 -0.54 -3.56 -0.77 2.49
   
Study 2, 2001 (Oct - Jan)  
1 A2827 0.0890 -1.43 -24.02 -2.73 21.16
1 B5253 0.0914 -1.43 -24.02 -3.78 21.16
1 C6180 0.1025 -1.43 -24.02 -5.78 21.16
2 A2402 0.2799 -2.67 -9.23 -2.03 3.88
2 B5258 0.2894 -2.67 -9.23 -2.11 3.88
2 C6790 0.3095 -2.67 -9.23 -3.77 3.88
3 A0813 2.4648 -0.63 -3.17 -0.46 1.91
3 B4132 2.5921 -0.63 -3.17 -0.13 1.91
3 C9062 2.7509 -0.63 -3.17 -0.95 1.91
   
Study 1, 2002 (Jul - Sep)  
1 A2510 0.0660 -1.20 -14.06 1.44 11.65
1 B4043 0.0684 -1.20 -14.06 1.24 11.65
1 C6282 0.0732 -1.20 -14.06 59.10 11.65
2 A3024 0.1440 -3.15 -11.34 -12.78 5.04
2 B6034 0.1491 -3.15 -11.34 -5.07 5.04
2 C7877 0.1560 -3.15 -11.34 -49.15 5.04
3 A2510 2.4802 -0.62 -2.97 -0.56 1.74
3 B3831 2.5997 -0.62 -2.97 0.16 1.74
3 C6470 2.7197 -0.62 -2.97 0.07 1.74
   
Study 2, 2002 (Nov - Dec)  
1 A0630 0.0721 -2.11 -12.77 -6.52 8.55
1 B5158 0.0733 -2.11 -12.77 -0.14 8.55
1 C7185 0.0797 -2.11 -12.77 -4.14 8.55
2 A0604 0.1154 -2.17 -13.47 -1.13 9.13
2 B4140 0.1185 -2.17 -13.47 -2.36 9.13
2 C6769 0.1272 -2.17 -13.47 -2.44 9.13
3 A2909 2.4324 -0.32 -2.70 -0.18 2.07
3 B4036 2.4969 -0.32 -2.70 -0.28 2.07
3 C6969 2.7664 -0.32 -2.70 -0.21 2.07
   
Study 1, 2003 (Jun - Aug)  
1 A2433 0.1008 -3.85 -10.65 -4.10 2.95
1 B0455 0.1087 -3.85 -10.65 -2.96 2.95
1 C4352 0.1137 -3.85 -10.65 -4.33 2.95
2 A1133 0.2022 -2.95 -7.07 -3.20 1.17
2 B0903 0.2204 -2.95 -7.07 -2.61 1.17
2 C3152 0.2315 -2.95 -7.07 -2.72 1.17
3 A4508 2.8357 -0.81 -2.70 -0.19 1.07
3 B1305 3.1595 -0.81 -2.70 -0.31 1.07
3 C2560 3.2404 -0.81 -2.70 -1.10 1.07
   
Study 2, 2003 (Dec - Feb)  
1 A0406 0.0556 -3.87 -18.67 -8.99 10.93
1 B1142 0.0559 -3.87 -18.67 -13.24 10.93
1 C3938 0.0603 -3.87 -18.67 -11.61 10.93
2 A1154 0.3087 -2.12 -5.65 -1.59 1.41
2 B3746 0.3087 -2.12 -5.65 -3.56 1.41
2 C1039 0.3371 -2.12 -5.65 -3.26 1.41
3 A0726 3.0806 -0.57 -2.23 -0.61 1.09
3 B4803 3.0805 -0.57 -2.23 -1.03 1.09
3 C3706 3.3607 -0.57 -2.23 -0.69 1.09
   
Study 1, 2004 (Jun - Jul)  
1 A3903 0.0998 -5.02 -13.98 -11.56 3.93
1 B1425 0.0998 -5.02 -13.98 -11.94 3.93
1 C0731 0.0991 -5.02 -13.98 -8.68 3.93
2 A1007 0.3606 -2.05 -6.89 -9.14 2.79
2 B2814 0.3604 -2.05 -6.89 -7.55 2.79
2 C2757 0.3609 -2.05 -6.89 -5.50 2.79
3 A2119 2.3112 -0.96 -3.68 -1.25 1.75
3 B5149 2.3106 -0.96 -3.68 -1.40 1.75
3 C0627 2.3110 -0.96 -3.68 -1.18 1.75
   
Study 2, 2004 (Nov - Dec)  
1 A1457 0.0661 -5.01 -20.47 -10.92 10.44
1 B2413 0.0662 -5.01 -20.47 -14.40 10.44
1 C1214 0.0721 -5.01 -20.47 -20.22 10.44
2 A0108 0.2752 -2.82 -10.38 -5.11 4.73
2 B5233 0.2754 -2.82 -10.38 -5.80 4.73
2 C0642 0.2751 -2.82 -10.38 -7.53 4.73
3 A6764 2.6404 -1.07 -3.72 -0.18 1.57
3 B2101 2.6405 -1.07 -3.72 -0.39 1.57
3 C2849 2.6406 -1.07 -3.72 -3.66 1.57
   
Study 1, 2005 (May - Jul)  
1 A2420 0.1202 -2.96 -10.38 -7.05 4.46
1 B2934 0.1202 -2.96 -10.38 -16.03 4.46
1 C3664 0.1203 -2.96 -10.38 -22.25 4.46
2 A3936 0.2403 -3.48 -11.39 -8.63 4.43
2 B0712 0.2404 -3.48 -11.39 -15.90 4.43
2 C0145 0.2405 -3.48 -11.39 -4.23 4.43
3 A3633 3.6009 -1.69 -5.99 -5.15 2.62
3 B1555 3.6007 -1.69 -5.99 -3.19 2.62
3 C4338 3.6005 -1.69 -5.99 -3.01 2.62
   
Study 2, 2005 (Nov - Dec)  
1 A5750 0.060 -5.77 -23.84 -14.39 12.29
1 B3961 0.060 -5.77 -23.84 -17.42 12.29
1 C5651 0.060 -5.77 -23.84 -17.25 12.29
2 A3709 1.485 -1.82 -4.56 -1.27 0.92
2 B3536 1.485 -1.82 -4.56 -1.27 0.92
2 C7044 1.485 -1.82 -4.56 -1.33 0.92
3 A6840 4.360 -2.19 -7.07 -4.05 2.68
3 B2026 4.361 -2.19 -7.07 -1.62 2.68
3 C5904 4.361 -2.19 -7.07 -3.10 2.68
   
Study 1, 2006 (May - Jun)  
1 A3844 0.084 -3.90 -11.30 -8.04 3.60
1 B1211 0.084 -3.90 -11.30 -9.11 3.60
1 C1561 0.084 -3.90 -11.30 -8.19 3.60
2 A5633 1.080 -1.50 -5.40 -1.81 2.40
2 B5040 1.080 -1.50 -5.40 -2.29 2.40
2 C3119 1.080 -1.50 -5.40 -1.85 2.40
3 A5712 4.410 -1.70 -5.50 -2.14 2.10
3 B3045 4.410 -1.70 -5.50 -2.62 2.10
3 C0160 4.410 -1.70 -5.50 -1.71 2.10
   
Study 2, 2006 (Oct - Nov)  
1 A7520 0.072 -3.90 -16.40 -3.48 8.50
1 B5803 0.072 -3.90 -16.40 -18.36 8.50
1 C7449 0.072 -3.90 -16.40 -11.07 8.50
2 A3563 0.695 -2.00 -6.40 -1.69 2.40
2 B2276 0.695 -2.00 -6.40 -3.57 2.40
2 C0921 0.695 -2.00 -6.40 -5.84 2.40
3 A3878 4.650 -0.60 -2.90 -0.74 1.70
3 B3040 4.650 -0.60 -2.90 -0.72 1.70
3 C1450 4.650 -0.60 -2.90 -0.55 1.70
   
Study 1, 2007 (Apr - May)  
   
1 A2061 0.090 -5.23 -20.25 -7.76 9.80
1 B6749 0.090 -5.23 -20.25 -14.15 9.80
1 C1457 0.090 -5.23 -20.25 -9.04 9.80
2 A1114 1.780 -1.18 -3.94 -2.49 1.58
2 B4045 1.780 -1.18 -3.94 -0.99 1.58
2 C2277 1.780 -1.18 -3.94 -1.18 1.58
3 A0318 4.500 -0.81 -3.78 -0.27 2.17
3 B6920 4.500 -0.81 -3.78 -0.76 2.17
3 C1025 4.500 -0.81 -3.78 -2.62 2.17
   
Study 2, 2007 (Nov - Dec)  
   
1 A5325 0.062 -6.08 -23.79 -9.56 11.62
1 B3272 0.062 -6.08 -23.79 -11.85 11.62
1 C0503 0.062 -6.08 -23.79 -10.01 11.62
2 A1051 0.562 -1.85 -7.39 -19.21 3.70
2 B7103 0.562 -1.85 -7.39 -2.99 3.70
2 C3675 0.562 -1.85 -7.39 -2.45 3.70
3 A2841 4.663 -0.69 -3.10 -1.99 1.73
3 B3674 4.663 -0.69 -3.10 -0.86 1.73
3 C4545 4.663 -0.69 -3.10 -0.74 1.73
   
Study 1, 2008 (May - Jun)  
   
1 A6962 0.052 -6.73 -20.87 -8.20 7.41
1 B4658 0.052 -6.73 -20.87 -6.54 7.41
1 C7317 0.052 -6.73 -20.87 -7.69 7.41
2 A0351 0.460 -1.94 -7.46 -1.80 3.58
2 B7014 0.460 -1.94 -7.46 -3.55 3.58
2 C1342 0.460 -1.94 -7.46 -1.87 3.58
3 A1608 4.888 -0.64 -2.78 -1.35 1.50
3 B6938 4.888 -0.64 -2.78 -0.67 1.50
3 C7506 4.888 -0.64 -2.78 -0.67 1.50
OH Suspended Sediment Concentration