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

~
co Table 6. Comparisons of environmental and pre-processing split-replicate samples tor nutrients and organic carbon
Jo- {Env., env(wnmental sample; Split, pre-processing split-replicate sample; Difr. I, differeoce in units of cemslime{\(; Dire 2, dIfference in lowe5-t p"unding umt: mglL, milligrams per liter: shaded ceHs
" a
.. .. represent dlfkrences gremer lhan plus or minus I lowest roundmg unit: lowesl rounding unit is equal 10 magnitude of the lea:,;[ slgniflcanl figure; <. value is Jess than the lahoratory minimum reporting
rD ::::!.
:: 3 Ic\'elJ
3 Jl
.. ..
~ "
_c: Ammonia Dissolved ammonia plus organic Total ammonia plus organic
Ul'"
-"
c: 0 Station Date Env. Split Ditt.1 Env. Split Ditt.1 Env. Split Ditt.1
~- Diff.2 Ditt.2 Ditt.2
c~ (mglL) (mglL) (mglL) (mglL) (mg/L) (mglL) (mg/L) (mglL) (mg/L)
=. !. Gunnison near 090596 0.02 0.02 0 0 0.3 0.2 0.1 0.4 0.7 -0.3 -3
--~
:E' Grand} unction
" 0
_0 Gore 102495 <0.02 .::0.02 0 0 <0.2 <0.2 0 0 <D.:! <0.2 0 0
.. :0
~ -
<a Uncompahgre 072596 om 0.03 0 0 <0.2 <0.2 0 0 0.3 0.2 0.] I
.. -
"Ul
~ .. French 090996 <0.02 <0.02 0 0 <0.2 <0.2 0 0 <0.2 <0.2 0 0
:3
",... Dry 082996 0.05 0.05 0 0 0.4 0.4 0 0 0.8 0.8 0 0
CQ=
'foil Dry Fork 071596 0.03 0.02 0.0] 1 0.3 0.2 0.1 1 0.3 0.2 0.1 1
"'0
"'- Baker 071696 0.04 0.02 0.02 2 <0.2 <0.2 0 0 <0.2 <0.2 0 0
Ul
c: -0.3 -3
"- Maximum difference 0.02 2 0.1 I
"
" Percenl ,)f samples with 71 71 71 71 57 57
m
:IE no difference
..
~ Percent of samples 86 100 86
~ within plus or minus I
:r lowesl. rounding unit
m
c
... Suspended organic carbon
... Nitrite Nitrite plus nitrate Dissolved organic carbon
~ --
0 Station Date Env. Split Oitf.1 Env. Split Ditt.1 Env. Split Ditt.1 Env. Split Ditt.1
0 Ditt.2 Ditt.2 Ditt.2 Ditt.2
0 (mglL) (mglL) (mglL) (mglL) (mglL) (mglL) (mglL) (mglL) (mglL) (mglL) (mglL) (mglL)
~ Gunnison near 090596 0.01 0.D2 -0.01 -I i.5 i.5 0 0 3.5 3.4 0.1 0.9 0.8 0.1
0 Grand Junction
"
<. Gore 102495 <0.01 <0.01 0 0 0.44 0.44 0 0 i.4 1.3 0.1 I 0.1 0.2 -{).I -I
~
z Uncompahgre 072596 0.01 0.01 0 0 0.14 0.14 0 0 I 0.9 0.1 i 0.3 0.3 0 0
!l
o. French 090996 <0.01 <0.01 0 0 0.07 0.08 -0.01 -I 0.5 0.4 0.1 1 <0.1 <0.1 0 0
~
!!!. Dry 082996 0.D2 0.02 0 0 3.9 3.9 0 0 3.4 3.5 -0.1 -I 2.3 i.9 0.4 4
:E
" Dry Fork 071596 om 0.01 0 0 0.79 0.8 -0.01 -I 5.2 5.1 0.1 i 0.4 0.5 -0.1 -I
..
7 Baker 071696 0.01 0.01 0 0 0.1 0.09 0.01 I i.9 i.9 0 0 0.2 0.6 -0.4 -4
0
c: Maximum difference -0.01 -I ~0.01 ~I ~I ~I ~0.4 ~4
!!!.
~ Percenr of samples with 86 86 57 57 14 14 29 29
no difference
Percent of :.amples lDO 100 lDO 71
within plus or minus 1
lowest rounding unit