EP 1110-1-29
31 Aug 01
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a. Evaluation of Laboratory Data
The Contractor shall obtain and review NLLAP-required QC data generated for each sample run
completed under this SOW . The QC data shall include batch QC validation data and the 95%
confidence interval data (determined by the laboratory from QC charts or a QC database for each
matrix, i.e., single surface dust wipe samples and soil samples) determined at concentrations equivalent
to [ ] g/ft2 for dust wipe samples and [ ] g/g for bulk soil samples. The Contractor shall evaluate
the data package to determine that the QA/QC data generated for each sample run falls within current
NLLAP LQSR parameters listed in Table B-1, Appendix B. Spiked samples submitted to the
laboratory shall fall within 75% - 125% of the true value.
b. Rejection of Laboratory Data
The Contractor shall not accept or use data from the laboratory that does not fall within current NLLAP
LQSR parameters specified in Table B-1, Appendix B. If the laboratory fails to obtain spiked sample
results within the specified error limits:
a. Two more spikes of the same matrix shall be sent immediately to the laboratory for
analysis.
b. If the two additional spike samples fail, the sample batch shall be considered invalid for
the matrix represented.
If laboratory data are rejected and insufficient quantities of the samples remain to allow re-analysis of
the samples while adhering to QA/QC requirements, the Contractor shall collect and submit additional
samples, at no cost to the Government, for laboratory analysis, using NLLAP QA/QC protocols. The
Contractor shall also be responsible for any re-sampling required due to laboratory errors that result in a
destruction or loss of data, or failure to report results on any samples submitted.
2.3.4
Contractor Certification of Project Data Validity
The Contractor shall certify that all field data collected to determine the absence of lead hazards were
valid and met the DQOs.
2.3.5
Comparison with Lead Hazard Action Levels
The Contractor shall compare the collected data with the lead hazard action levels listed in Table A-1 to
determine that clearance has been achieved. The Contracting Officer shall be notified immediately if
validated leaded dust wipe samples or soil samples exceed the lead hazard action levels in Table A-1.
The comparison shall be documented in the Lead Hazard Clearance Report.
A-23
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