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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Table 8. Comparison of environmental and pre-processing split-replicate samples for trace elements-Continued

[Env.. environmenlal sample; Splil. pre.processing splil-replic;][e sample; Diff. I. difference in UnilS of constiruent; Diff. 2. difference in lowesl rounding unil; lowest rounding unit is equal to the
magnitude of the It'asl significant figure: Ilg/L. Inlcrogr:lms per liter: shaded (eJJ.~ represent dIfferences gre:ller ilian plus or minus I l(lwe~l rounding unit; <, value is less than the laborawfY minimum
rep..1J1ing level)

Copper Lead Molybdenum Nickel
Station Date ------ --
Env. Split 0111.1 Dill. 2 Env. Split 0111.1 Dill. 2 Env. Split 0111.1 0111.2 Env. Split 0111.1 Dill. 2
(~gIL) (~gIL) (~gIL) (~gIL) (~gIL) (~gIL) (~gIL) (~gIL) (~gIL) (~g/L) (~gIL) (~g/L)
Uncl)mpahgre 072596 3 4 -I -I <I <I 0 0 2 2 0 0 2 3 -I -I
French 090996 I 1 0 0 5 4 1 I <I <I 0 0 2 2 0 0
Maximum difference -I -I I 0 0 -I -I
Numocr of s1:l.mples with I I 1 2 2 I I
no difference
Number of samples 2 2 2 2
within plus or minus I
lowest rounding unil
Selenium Silver Uranium Zinc
Station Date -------- -
Env. Split 0111.1 0111.2 Env. Split 0111.1 0111.2 Env. Split 0111.1 0111.2 Env. Split 0111.1 0111.2
(~gIL) (~gIL) (~gIL) (~gIL) (~gIL) (~g/L) (flgIL) (~g/Ll (~gIL) (~gIL) (~g/L) (~gIL)
Uncompahgre 072596 <I <I 0 0 <I <\ 0 () <\ <\ 0 0 14 13 \ \
French 090996 <\ <\ 0 0 <\ <1 0 0 <i <I 0 0 2.400 2.400 0 0
Maximum difference 0 0 0 0 0 0 1 1
Number of samples with 2 2 2 2 2 2 ] 1
no difference
Number of samples 2 2 2 2
within plus or minus I
low~st rounding unit