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

TSl.O
Table 15. Comparison of post-processing spliHeplicate samples for nutrients and organic carbon
IDiff. I. difference in units of conslituent: Diff. 2. difference in lowest roundIng unit; mg/L milligrams per liler; <. value is ]e~s than the loboratory minimum reportmg level; shaded cells represent
differences greater than plu~ or minus I lowe,>t rounding unit. luwest rounding Unit is equal to magnitude of the least significant figure; -", no datal
Ammonia Dissolved ammonia plus organic Total ammonia plus organic
Station Date Split A SplitS Dill. 1 Split A SplitS Dill. 1 Split A SplitS Dill. 1
(mglL) (mglL) (mglL) Dill. 2 (mg/L) (mg/L) (mglL) Dill. 2 (mglL) (mgIL) (mglL) 0111.2
State Line 09t096 0.08 0.08 0 0 0..1 0.3 0 0 0.8 0.7 0./ I
Cameo 05 \396 <0.02 <0.02 0 0 <0.2 <0.2 0 0 1.5 0.8 0.7 7
Gunni..on Tunnel 062995 <0.02 <0.02 0 0 <0.2 <0.2 0 0 0.2 <0.2 0.1 0.5
Gunnison at 32 Road 071895 0.02 0.02 0 0 <0.2 <0.2 0 0 <0.2 d12 0 0
East 113095 <0.02 <O.Ol 0 0 <0.2 <0.2 0 0 <().2 <0.2 0 0
Easl 051696 0.02 0.02 0 0 <0.2 <0.2 0 0 0.3 0.3 0 0
Gore 082396 0.02 0.02 II 0 <0.2 <0.2 0 0 <0.2 cd)'2 0 0
Bak.er 081895 <0.02 <0.02 0 0 <0.2 <0.2 0 0 <11.2 <0.2 0 0
Maximum difference 0 0 0 0 0.7 7
Percent of samples with 100 100 100 100 62 62
no difference
Percent of samples 100 100 88
wifhin plus or minus J
lowe::.! rounding unit
Nitrite Nitrite plus nitrate Dissolved organic carbon
Slatlon Date SpUtA SplitS 0111.1 Split A SplitS Dill. 1 Split A SplitS Ditt.1
" Dill. 2 Dill. 2 0111.2
c: (mgIL) (mglL) (mglL) (mglL) (mg/L) (mgIL) (mglL) (mg/L) (mglL)
~ 1.00 0.97 3.5
,... Slate Line 091096 0.02 0.02 0 0 0.03 3 3.9 0.4 4
::;
-< Cameo 051396 <0.01 <0.01 0 0 0.14 0.13 0.01 I 4 4 0 0
n
0 Gunnison Tunnel 062995 <0.01 <0.01 0 0 <0.05 <0.05 0 0 3.4 3.2 0.2 2
z 2.6 2.5 0.1
.... Gunnison at 31 Road 071895 <0.01 <0.01 0 0 <0.05 <0.05 0 0 I
:u
0 East 113095 <0.01 <0.01 0 I) 0.11 0.08 0.03 3 0.8 0.8 0 0
,...
'" East 051696 <0.01 <0.01 0 0 0.14 0.12 0.02 2 3
~
;: Gore 082390 <0.01 <0.01 0 0 0.48 0.47 0.01 I 1.1 1.2 -0.1 -I
."
,... Baker 081895 <0.01 <0.01 0 0 <0.05 <0.05 0 0 1.5 1.5 0 0
Z
Gl Maximum differem;e 0 0 0.03 3 0.4 4
."
:u Percent of samples with 100 100 38 38 43 43
0
Gl no difference
:u
~ Percent of samples 100 62 72
;: within plus or minus I
lowes[ rounding unit
'"
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