Quality Assurance Project Plan Including Sampling And Analysis Plan Page 65
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67Hunters Point Shipyard Parcel F ESTCP Demonstration Plan
Appendix A: Quality Assurance Project Plan
Table A-10. Measurement Quality Criteria for Measurements of PCB Congeners
QC Parameter
Acceptance Criteria
Corrective Action
Accuracy
<RL
Review data and assess results for evidence of field-related
Field(Equipment) Blank
contamination. Flag all data that are >RL.
Instrument Solvent Blank < lowest calibration standard
Review data and analysis for possible sources of contamination.
Reanalyze and/or document corrective action. Data must be flagged.
<RL
Evaluate batch for corrective action if Blank > RL and sample
Method (Procedural)
concentration < 5 times the detected blank. Perform corrective action
Blank
as above and re-process (extract, digest) sample batch. If batch
cannot be re-processed; "B" flag all data that are < 5 times the blank.
• Matrix Spike
40 - 120% recovery
Review data to assess impact of matrix. If other QC data are
acceptable and no spiking error occurred, then flag associated data.
Concentration in spike must be >5 ×
If QC data are not affected by matrix failure or spiking errors
occurred, then re-process MS. If not possible, then notify client and
background levels to be used for data
flag associated data.
quality assessment
• Surrogate Spike (SIS)
40 - 120% recovery
Review data. Discuss with Laboratory Manager (LM). Reanalyze,
re-extract, and/or document corrective action and deviations.
• Laboratory Control
40 - 120% recovery
Perform corrective action. Re-analyze and/or re-process sample
batch. Batch data associated with failed LCS (LCS data outside
Sample (LCS)
control limits) cannot be reported. If batch cannot be re-processed:
notify client, flag data, discuss impact in report narrative.
<30% RPD
Review data to assess impact of matrix. If other QC data are
Precision: MS/MSD
acceptable, then flag associated data. If QC data are not affected by
Concentration detected must be >5
matrix failure, then re-process duplicate. If not possible, then notify
times RL to be used for data quality
client and flag associated data.
assessment.
Table A-11. Navy Environmental Data Transfer Standard (NEDTS) Data Qualifiers
for PCB Congener Analysis
Data Qualifiers
Blank contamination: The analyte was detected above the reporting limit in an associated blank. For this
B
study, blank contamination indicates that the analyte was found in both a sample and the associated blank.
The “B” will be reported on the result associated with the field samples, not the blank.
D
Dilution run. Initial run outside linear calibration range of instrument
E
Estimate, result outside linear calibration range of instrument.
J
Estimated value (Compared to the sample-specific reporting limit)
R
Rejected
U
The value was less than the or the analyte was not detected (The sample-specific MDL is inserted)
X
Indicates manual modification of result or U.S. EPA qualifier
Quality Control Qualifiers
N
Spiked sample recovery not within control limits
*
Duplicate analysis not within control limits
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