Quality Assurance and Quality Control (QA/QC)

EP 1110-1-28
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EP 1110-1-28

31 Aug 01

2.3.2

2.3.2.1

Field Blank Dust Wipe QA Samples

Field blanks for single wipe sampling shall be using the same wipe material used to collect the field wipe

samples. There shall be no indication to the laboratory, by sample identification numbers or other

means, that the field blank samples are QA samples.

2.3.2.2

Field Spike Dust Wipe QA Samples

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NOTE: The AIHA produces the most reliable spiked lead samples that are

commercially available and are specified over all other sources if commercial

spikes are purchased, since the AIHA prepared spiked samples are used in the

Environmental Lead Proficiency Analytical Testing (ELPAT) certification

program. The AIHA stock samples are obtained through the AIHA.

AIHA

2700 Prosperity Road

Fairfax, Virginia 22031

(703) 849-8888 (voice)

(703) 207-3561 (fax)

http://www.aiha.org/fees.html/

The text below gives the Contractor two options to generate spiked wipe

samples:

In Option a, the Contractor must obtain the same wipe material used by the

commercial source in preparing the spikes, to collect field samples.

Option b allows the Contractor to use a second independent laboratory to

prepare spikes sent to the laboratory doing the analysis of the field data. The

laboratory must use NIST traceable materials in preparing the spike samples.

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The Contractor shall submit double-blind (spiked) QA dust wipe samples to the laboratory at a

frequency of one double-blind sample per 50 field samples collected (with a minimum of at least one)

using one of the two following options:

a. The Contractor shall obtain commercially prepared spiked wipe samples that are

prepared by meeting the same QA/QC requirements in preparing spiked wipe samples used by the

AIHA in its management of the Environmental Lead Proficiency Analytical Testing (ELPAT) laboratory

certification program, for submittal to the laboratory. [One source of spike samples m eting the

QA/QC requirements is listed on the AIHA web site: http://www.aiha.org.] The Contractor shall

obtain from the commercial source, wipes of the same brand and type as those used to prepare the

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