WSP05652

• File Number: 8273.300
• Description: Colorado River Basin Salinity Control - Federal Agency Reports - USGS
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1997
• Author: USGS
• Title: Interim Results of Quality-Control Sampling of Surface Water for the Upper Colorado River National Water - Quality Assessment Study Unit - Water Years 1995-96
• Water Supply Pro - Doc Type: Report/Study

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3'" Tabl., 11. Comparison of environmental and concurrent- and sequential~replicate samples for nutrients and organic carbon-Continued
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~.. (Env.. l=n\'ironmental sumpit.'; Rep.. replicate s3mple; Dlff. J. diffe-rcllce in units of con~lituent: Dill. ~,difference m lowest rounding unil: mg/L, mIlligrams per lifer: <. \'ulue is less Ihan lhe laborlllory
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<>- JlIlnimum reporting level; ~haded cells represent differenceS grt"ater than plus or minus I lowest rounding un.il~ lowest rounding unit is equal to lhe magnilude of !.he least significanl fig.urej
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~~ ~ Nitrite Nitrite plus nitrate Dissolved organic carbon Suspended organic carbon
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.. (') Station Date --------.
~o Env. Rep. Dill.l Env. Rep. Dill.l Env. Rep. Dill. 1 Env. Rep. Diff.1
.. ::I Dill. 2 Dill. 2 Dill. 2 Dill. 2
~ ~ (mgIL) (mgIL) (mgIL) (mg/L) (mgIL) (mgIL) (mglL) (mg/L) (mg/L) (mg/L) (mglL) (mglL)
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"'" Concurrent replicates
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~3 State Line 091096 0.02 0.02 0 0 I I 0 0 3.3 3.9 -{).6 -6 3.3 1.7 1.6 16
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"'= Cameo 05 1396 <0.01 <0.01 0 0 0.14 0.14 0 0 4 4 0 0 3.7 4.3 -0.6 -6
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~9.. Gunnison at 32 Road 071895 <0.01 <0.01 0 0 <0.05 <1.1.05 0 0 2.5 2.6 -{).I -I 0.5 0.3 0.2 2
'" East 113095 <0.01 <0.01 0 0 0.08 0.11 -0.03 -3 0.6 0.8 -{).2 -2 0.1 0.1 0 0
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;. Easl 051696 <0.01 41.01 0 0 0.12 0.14 -0.02 -" 2.6 3 -().4 -4 0.9 1.1 -0.2 -2
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~ Gore 082396 <0.01 <0.01 0 0 0.48 0.48 0 0 l.l 1.1 0 0 0.2 0.2 0 0
~ Baker 081895 <0.01 <0.01 0 0 <0.05 <0.05 0 0 1.5 1.5 0 0 O.i 0.1 0 0
c; Maximum difference 0 0 -0.3 -3 -{).6 -6 1.6 i6
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5' Po;::rcent of samples with 100 IOU 71 71 43 43 43 43
.. no difference
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:g Percent .of samples 100 71 57 43
!l within plus or minus 1
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0 lowest rounding unil
~ Sequential replicates
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<> Dolsero 032096 <0.01 <0.01 0 0 0.13 0.12 O.Oi I 2.5 2.2 0.3 3 0.7 0.7 0 0
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'" Reed 112295 0.05 0.05 0 0 8.3 8.3 0 0 4.8 4.7 U.I 1 0.4 0.4 0 0
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~ Baker 022796 <0.0\ 41.01 0 0 0.11 0.10 0.01 I 1.0 1.1 -0.1 -I 0.3 0.1 0.2 2
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a Maximum difference 0 0 0.01 I 0.3 3 0.2 2
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::I Number nf samples with 3 3 \ I 0 0 2 2
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::e no difference
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;; Number of samples 3 3 2
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b within plus or minus I
c lowest.rounding unit
!!!.
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