EP 1110-1-28
31 Aug 01
submitted to the laboratory for analysis in accordance with ASTM's Standard Practice for Sample
Digestion of Soils for the Determination of Lead by Atomic Spectrometry (E 1726).)
2.3.3
Project Data Review and Assessment
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NOTE: The analytical data acceptance criteria for lead hazard identification
and control samples provided in Table B-3 (Appendix B) have been adapted
from the Laboratory Quality System Requirements (LQSR) Revision 2.0
(August 1996), Table A-1, Section 10-Quality Assurance and Quality Control.
Table B-3 (Appendix B) must be verified (and updated as needed) as a part of
the SOW editing process by contacting the EPA NLLAP Program Manager
(call the EPA Hot Line 1-800-424-LEAD). Any time laboratory data are
reviewed for acceptability, the current revision of the LQSR must be consulted
to make required changes to Table B-3 (Appendix B).
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The Contractor shall review all project data collected as part of the current assessment and verify that
the data was collected in accordance with the DQOs. Data review includes: (1) Field sample
collection and control review, and (2) Analytical laboratory data review. Field sample collection and
control review includes evaluating the adequacy of the Risk Assessment Sampling Plan throughout the
performance of the assessment.
2.3.3.1
Field Wipe Quality Assurance Verification
Prior to beginning field dust sampling, the risk assessor shall provide the laboratory with at least one
uncontaminated wipe per each container of bulk packed wipes that will be used for collecting field dust
wipes, or verify to the Contracting Officer that the wipe material meets the requirements of Standard
Specification for Wipe Sampling Materials for Lead in Surface Dust (E 1792). Wipes containing
more than 5.0 g/wipe of background lead shall render the entire container of bulk packed wipes
represented by the analyzed wipe, contaminated and disqualify the represented wipes for field use.
(See AIHA web site for a listing of wipe vendors meeting ASTM Method E 1792 criteria.)
2.3.3.2
Laboratory QA and QC Verification.
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NOTE: The Contractor must choose the most advantageous technique to
provide extra samples to the laboratory, should additional samples be required
by the laboratory to replace sampling or QA/QC data lost due to laboratory
mistakes. The Government is not liable for cost of additional sample collection
due to laboratory mistakes, Contractor sample collection problems, or chain-of-
custody errors.
A-26
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