EP 1110-1-31
31 Aug 01
to the laboratory, and a copy of the forms shall accompany each shipment of samples. An
example chain-of-custody Form 7 is included as Figure B-8 in Appendix B.
The Contractor shall include copies of all chain-of-custody forms completed during the
assessment in the Lead Inspection/Risk Assessment Report.
2.2.8
Decontamination
Field sampling equipment shall be decontaminated following the appropriate ASTM standard.
At a minimum, the field decontamination procedures for non-disposable sampling equipment
(e.g., knives, coring devices, scrapers) shall consist of either wiping the equipment off twice
using a clean wet wipe each time, or washing in a solution of non-phosphate detergent (e.g.,
Liquinox), and rinsing with distilled water. The equipment shall be decontaminated prior to
each use, between each sample, and prior to leaving the site. Disposable latex gloves shall be
discarded after each sample. Gloves need not be changed between each sub-sample when
collecting composite soil samples. The Contractor shall coordinate with the installation
environmental officer to determine requirements for the disposal of decontamination waste and
used personal protective equipment.
2.3
TASK 3 SAMPLE DATA ANALYSIS, EVALUATION OF FINDINGS
2.3.1
XRF Data Interpretation
XRF results shall be interpreted by the Contractor in accordance with ASTM Standards, the XRF
manufacturer's PCS, and as otherwise required in this SOW.
2.3.2
Sample Preparation and Analysis
Samples collected by the lead inspector/risk assessor during the assessment(s) shall be sent to an
[independent] laboratory recognized by the EPA under the NLLAP for analysis. The laboratory
must be accredited for each type of analysis required. The Contractor shall verify the following
with the laboratory:
2.3.2.1
Dust Sample Preparation and Analysis
Dust samples shall be prepared for analysis following the ASTM Practice for Hot Plate
Digestion of Dust Wipe Samples f or the Determination of Lead by Atomic Spectrometry (E 1644)
or Standard Provisional Practice for Ultrasonic Extraction of Paint, Dust, Soil, and Air Samples
for Subsequent Determination of Lead (E 1979) and analyzed following the Standard Test
Method for Analysis of Digested Samples for Lead by Inductively Coupled Plasma Atomic
Emission Spectrometry (ICP-AES), Flame Atomic Absorption (FAAS), or Graphite Furnace
Atomic Absorption (GFAAS) Techniques (E 1613). The most current version of the methodology
shall be used. The laboratory shall report results in units of microgram per square foot (g/ft2),
allowing direct comparison with Table A-1, EPA, and HUD criteria.
A-23
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