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 />
• 1,3-Dinitrobenzene – LL1mw084 (1.33 µg/L)<br />
Remediation of Soils and Dry Sediments at RVAAP 08-11 (LLs 1-4)<br />
Page 3-6<br />
• 2,4,6-Trinitrotoluene – LL1mw084 (9.18 µg/L) and LL3mw238 (65.1 µg/L)<br />
• 2,4-Dinitrotoluene – LL1mw084 (4.35 µg/L)<br />
• 2-Amino-4,6-dinitrotoluene – LL1mw081 (0.553 µg/L J), LL1mw084 (15.8 µg/L J),<br />
LL2mw267 (0.477 µg/L J) and LL3mw238 (2.84 µg/L)<br />
• 4-Amino-2,6-dinitrotoluene – LL1mw081 (0.563 µg/L J), LL1mw084 (21.9 µg/L),<br />
LL2mw267 (0.453 µg/L J) and LL3mw238 (26.6 µg/L and 26.3 µg/L )<br />
• 4-Nitrotoluene - LL2mw267 (0.436 µg/L J)<br />
• HMX – LL1mw084 (0.417 µg/L J) and LL3mw238 (1.49 µg/L)<br />
• RDX – LL1mw084 (2.42 µg/L) and LL3mw238 (8.42 µg/L)<br />
• 1,3,5-Trinitrobenzene (4.24 µg/L) and LL3mw238 (24 µg/L)<br />
All of <strong>the</strong> a<strong>for</strong>ementioned explosive compounds, with <strong>the</strong> exception of 4-nitrotoluene, were<br />
detected at well LL1mw084. The well with <strong>the</strong> highest concentrations <strong>for</strong> <strong>the</strong> individual<br />
explosive COCs was LL3mw238. Trinitrotoluene and RDX were above <strong>the</strong> Region 9 PRGs at<br />
both well locations. No propellants were detected in any of <strong>the</strong> baseline groundwater samples.<br />
3.2.8.4 In<strong>org</strong>anics<br />
In addition to MCLs and Region 9 PRGs, <strong>the</strong> in<strong>org</strong>anics detected above <strong>the</strong> laboratory reporting<br />
limits were compared to facility-wide background criteria <strong>for</strong> filtered groundwater. Calcium,<br />
magnesium, iron, potassium, and sodium were eliminated from this discussion as potential<br />
on-site contaminants because <strong>the</strong>y are considered essential nutrients. The following in<strong>org</strong>anic<br />
elements were detected above <strong>the</strong> reporting limits and applicable background levels:<br />
• Dissolved Arsenic – LL1mw081 (0.00102 mg/L), LL1mw082 (0.00191 mg/L),<br />
LL1mw085 (0.000427 mg/L), LL2mw262 (0.000313 mg/L J and 0.000268 mg/L J),<br />
LL2mw263 (0.0104 mg/L), LL2mw266 (0.00488 mg/L and 0.00554 mg/L), LL2mw267<br />
(0.00438 mg/L), LL2mw269 (0.000623 mg/L J), LL3mw236 (0.000277 mg/L J),<br />
LL3mw238 (0.000434 mg/L J), LL3mw239 (0.000981 mg/L J), LL4mw196 (0.00709<br />
mg/L J), LL4mw197 (0.000268 mg/L J) and LL4mw198 (0.000421 mg/L J)<br />
• Dissolved Antimony – LL1mw067 (0.00088 mg/L), LL1mw078 (0.000385 mg/L J),<br />
LL1mw084 (0.000322 mg/L J), LL1mw085 (0.000432 mg/L J), LL2mw262 (0.000315<br />
mg/L J and 0.000422 mg/L J), LL2mw266 (0.000452 mg/L J), LL2mw267 (0.000525<br />
mg/L J), LL3mw239 (0.00053 mg/L J) and LL4mw197 (0.000333 mg/L J)<br />
• Dissolved Barium – LL2mw269 (0.263 mg/L)<br />
• Dissolved Beryllium – LL1mw084 (