1992-09-01_REVISION - M1988112

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 9/1/1992
• Doc Name: QUALITY ASSURANCE/QUALITY CONTROL-PROTOCOLS FOR THE COLLECTION OF SURFACE AND GROUND WATER
• Type & Sequence: TR6
• Media Type: D
• Archive: No

CORE LABORATORIES
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' , Western Atlas
International
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' TITLE
ANALYTICAL CHEMISTRY DIVISION QUALITY ASSURANCE MANUAL
' SOP No. FEVl540N NO, EFFECTIVE DATE PAGE
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Initial calibration verification standards must be analyzed prior to field
sample analyses.
• Continuing calibration verification standards must be analyzed once per
batch or at a frequency of 10% of the sample population, whichever is
' greater.
• A method blank and reference standard or stock standard pif available) must
be analyzed with each sample batch,
• Laboratory duplicates must be analyzed once per batch or at a frequency,
of 10% of the sample population, whichever is greater. i
• Matrix spikes must be analyzed once per batch or at a frequency of 10%

' i
of the sample population, whichever is greater.
• Calculate concentrations using linear regression on a scientific calculator.
! Correlation coefficient, slope, and Y-intercept values must be calculated
and recorded for all standard lines.
I P
nstrumental
arameters
' Method-specified calibration procedures, frequency regwirements, and
acceptance criteria must be followed isee section 12.0).
' Manufacturers' equipment guidelines and maintenance schedules must be
followed (see section 12.0-.
' • The correlation coefficient should be > 0.995 for the majority of
instrumental parameters.
• Initial calibration blanks must be analyzed prior to field sample analyses.
' • Continuing calibration blanks must be analyzed once per batch or at a
frequency of 10% of the sam
reater
le
ulation
whichever is
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• Initial calibration verification standards must be analyzed prior to field ,
'
i sample analysis.
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