Final Site Information Package for National Remedy Review Board ...
Final Site Information Package for National Remedy Review Board ...
Final Site Information Package for National Remedy Review Board ...
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SITE INFORMATION PACKAGE FOR NATIONAL REMEDY REVIEW BOARD<br />
PART B, SECTION 2: SITE REGULATORY HISTORY, ENFORCEMENT ACTIVITIES, AND REMEDIAL ACTIONS<br />
updating its cleanup plan <strong>for</strong> the Upper Coeur d’Alene Basin by conducting an FFS and<br />
issuing a ROD Amendment. The update considers the specific recommendations of the<br />
NAS, which included holistic evaluation of the Upper Basin; developing an improved<br />
understanding of the distribution, fate, and transport of dissolved metals in the<br />
groundwater and surface water systems; considering groundwater treatment approaches;<br />
developing predictive tools to assess remedial action effectiveness; improving the use of the<br />
adaptive management approach; and considering impacts of flood events on protective<br />
barriers.<br />
A summary of studies and investigations that were conducted within the Upper Basin from<br />
2001 through 2008 is provided in File B2-3 on the Supplemental CD. Since the 2002 ROD <strong>for</strong><br />
OU 3 was issued (USEPA, 2002), most of the studies and investigations have focused on<br />
developing a better understanding of the groundwater system in the Upper Basin, how the<br />
surface water and groundwater interact, the fate and transport of metals in the subsurface,<br />
and the effectiveness of alternative water treatment processes.<br />
2.4 Ongoing Data Collection Ef<strong>for</strong>ts<br />
Since the 2002 ROD <strong>for</strong> OU 3 was issued, more knowledge has been gained regarding the<br />
nature and extent of contamination and its effects on sensitive ecological receptors and<br />
potential associated effects on human health. Table B2-1 summarizes ongoing data<br />
collection programs within the Upper Basin. Existing programs are primarily associated<br />
with the Environmental Monitoring Plan (EMP) <strong>for</strong> OU 2, the Basin Environmental<br />
Monitoring Program (BEMP) <strong>for</strong> OU 3, and the Coeur d’Alene Basin Remedial Action<br />
Monitoring Program. These programs use dynamic parameters and monitoring frequencies<br />
that are anticipated to detect or predict potential rates of change in environmental<br />
conditions in the Upper Basin.<br />
USEPA has considered and used this in<strong>for</strong>mation to support the development and<br />
evaluation of remedial alternatives that make up the comprehensive approach to address<br />
surface water within the Upper Basin.<br />
B2-6