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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Cmt.#<br />
Page #<br />
Line #<br />
New Page<br />
or Sheet<br />
Comment<br />
Shaw Environmental, Inc. 17 of 39<br />
Recommendation<br />
Response<br />
mg/L), LL1mw082<br />
(0.000356 mg/L),<br />
LL1mw084 (0.00047 mg/L),<br />
LL2mw263 (0.0000555 mg/L<br />
J), LL2mw266<br />
(0.000112mg/L and 0.000101<br />
mg/L), LL2mw269<br />
(0.000564 mg/L J),<br />
LL3mw236 (0.000509<br />
mg/L), LL3mw238<br />
(0.000377 mg/L),<br />
LL3mw239 (0.00123 mg/L),<br />
LL4mw196 (0.000649<br />
mg/L), LL4mw197 (0.0002<br />
mg/L) and LL4mw198<br />
(0.000601 mg/L);<br />
• Dissolved Zinc – LL1mw084<br />
(0.0993 mg/L), LL2mw267<br />
(0.0679 mg/L J) and<br />
LL4mw198 (0.115 mg/L).<br />
All <strong>the</strong> concentrations listed above<br />
<strong>for</strong> dissolved manganese exceed <strong>the</strong><br />
drinking water Secondary Standards.<br />
All <strong>the</strong> concentrations listed above<br />
<strong>for</strong> dissolved antimony, barium,<br />
beryllium, cobalt, lead, nickel,<br />
selenium, thallium and zinc exceed<br />
<strong>the</strong> applicable background criteria.<br />
Arsenic concentrations exceeded <strong>the</strong><br />
Region 9 PRG at all <strong>the</strong> well<br />
locations identified above. A<br />
dissolved arsenic concentration of<br />
0.0104 milligrams per liter (mg/L)<br />
just exceeded <strong>the</strong> drinking water<br />
MCL of 0.01 mg/L at LL2mw263.<br />
None of <strong>the</strong> arsenic concentrations<br />
exceeded <strong>the</strong> background criteria of<br />
0.0117 mg/L.