Final Remedial Action Completion Report for the ... - Rvaap.org
Final Remedial Action Completion Report for the ... - Rvaap.org
Final Remedial Action Completion Report for the ... - Rvaap.org
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<strong>Remedial</strong> <strong>Action</strong> <strong>Completion</strong> <strong>Report</strong><br />
June 2008<br />
3.4.3 MEC Oversight during Excavation Activities<br />
Remediation of Soils and Dry Sediments at RVAAP 08-11 (LLs 1-4)<br />
Page 3-13<br />
As part of remediation activities at LLs 1-4, Shaw MEC personnel were assigned to observe <strong>the</strong><br />
preparation of <strong>the</strong> work areas and soil excavation. The MEC personnel were responsible <strong>for</strong><br />
inspecting excavated soils <strong>for</strong> <strong>the</strong> presence of propellants, identifying items suspected of being<br />
propellant nodules, and instructing Shaw field crew personnel as to how excavation activities<br />
would proceed so as to ensure <strong>the</strong> propellant material could be readily segregated <strong>for</strong> disposal. If<br />
MEC was encountered, direction of <strong>the</strong> excavation was to be guided by <strong>the</strong> MEC personnel until<br />
it was apparent that <strong>the</strong> MEC had been adequately removed.<br />
3.5 FIELD SCREEN SAMPLING<br />
As discussed in Step 3 of Section 3.4.2, soil samples were collected upon reaching <strong>the</strong> design<br />
limit of contamination or removal of “hot spot” areas and were analyzed in <strong>the</strong> Shaw on-site field<br />
laboratory using test kits and/or screening equipment <strong>for</strong> <strong>the</strong> applicable COCs. The field screen<br />
results were used as a screening tool to assess its ability in guiding remediation.<br />
3.5.1 Sample Collection<br />
Unlike confirmatory sampling that consisted of multi-increment sampling <strong>for</strong> <strong>the</strong> entire<br />
excavation area, field screen samples were collected at discrete locations along <strong>the</strong> excavation<br />
floors and walls. All field samples were collected from <strong>the</strong> desired depth (0 to 1 foot) and<br />
handled with disposal trowels and glass jars (<strong>for</strong> compositing and homogenizing samples).<br />
3.5.2 Sample Analysis<br />
The field screening and sampling methods are listed in Table 3-2 <strong>for</strong> <strong>the</strong> COCs encountered as<br />
part of <strong>the</strong> remedial action at LLs 1-4.<br />
Table 3-2<br />
Field Screening Methods <strong>for</strong> COCs<br />
COC Field Screening Method Material Specification<br />
In<strong>org</strong>anics (Aluminum, Antimony,<br />
Arsenic, Chromium, Lead and Manganese)<br />
TNT and RDX<br />
PCBs<br />
Notes:<br />
COC – Chemical of Concern<br />
XRF – X-Ray Fluorescence<br />
TNT – Trinitrotoluene<br />
RDX – Cyclonite<br />
RVAAP – Ravenna Army Ammunition Plant<br />
Multi-Source XRF analyzer<br />
(SW-846 Method 6200)<br />
Field Colorimetric Analysis<br />
(RVAAP SOP)<br />
Immunoassay Test Kit<br />
(SW-846 Method 4020)<br />
Innov-X Systems XRF Metals<br />
Analyzer<br />
TNT/RDX Ensys ® Soil Test Kit<br />
from Strategic Diagnostics Inc.<br />
PCB Ensys ® Soil Test Kit from<br />
Strategic Diagnostics Inc.<br />
GC-ECD Hewlard Packard 5890 GC w/<br />
ECD<br />
SOP – Standard Operating Procedure<br />
PCBs – Polychlorinated Biphenyls<br />
GC – Gas Chromatograph<br />
ECD – Electron Capture Detector<br />
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