1992-04-01_REVISION - M1988112

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 4/1/1992
• Doc Name: QUALITY ASSURANCE QUALITY CONTROL PROTOCOLS FOR THE COLLECTION OF SURFACE & GROUND WATER QUALITY
• Type & Sequence: TR6
• Media Type: D
• Archive: No

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CORE LABORATORIES
ANALYTICAL CHEMISTRY DIVISION QUALITY ASSURANCE MANUAL
REVISION ND. IEF FECTIVE DATE IPApE
0 I 1 /06/92 I 81
For field sample analysis, semivolatile parameters are allovNed one surrogate
per fraction which does not meet specifications (i.e., one acid and/or one
base/neutral surrogate) as long as all surrogates have measured recoveries of
> 10%. For semivolatile blank analysis, all surrogates must meet the
method-specified recovery limits. All volatile organics, pesticide/PCBs, and
herbicide analysis surrogates must meet the method-specified recovery limits.
Extraction/Method Duplicates
At a minimum, extraction duplicates must be analyzed at a frequency of 5%
of the sample population (i.e., 1-20 samples, 1 duplicate; $0-40 samples, 2
duplicates, etc.). Analytical parameters which do not require extraction
(VOA, THM, etc.) should have duplicates analyzed once per analytical batch
or at a frequency of 10% of the sample population, whighever is greater.
Matrix spike duplicates may be used in place of sample duplicates.
Matrix Spikes
At a minimum, matrix spikes must be analyzed at a frequency of 5% of the
sample population (i.e., 1-20 samples, 1 spike; 20-40 samples, 2 spikes etc.).
Preferably, matrix spikes will be analyzed once per analytical batch if sample
volumes permit.
Reference Standards
At a minimum, reference standards (EPA, NBS, etc.) must be analyzed each
time an initial calibration is performed in order to verify pdoper instrument
calibration. Preferably, reference standards will be analyzed weekly.
Reference standards must be from a source other than that which was used
for the calibration standards.
Laboratory Control Standards
At a minimum, laboratory control standards must be analyzed at a frequency
of 5% of the sample population (i.e., 1-20 samples, 1 LCS; 20-40 samples,
2 LCS,etc.). Preferably, laboratory control standards will b~ analyzed once
per analytical batch.
13.4 General Quality Control Acceptance Criteria