A seagull flies over the California Coastal National Monument which stretches along the entire coast of California and extends 12 miles into the Pacific Ocean. The Monument includes 20,000 rocks, islands, pinnacles and reefs.
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Ukiah Field Office

Project Number 7468-010 

 REVISED DRAFT

ENGINEERING EVALUATION / COST ANALYSIS (EE/CA)
 
 
 
RATHBURN - PETRAY MERCURY MINE
 
BEAR CREEK WATERSHED
Colusa County, California

Contract Number: NAB030001
Order Number: NAD06EE27
Requisition / Reference Number: R-0609851 / 0001
 
  
July 2008
 
 Prepared for:
Bureau of Land Management
2800 Cottage Way
Suite W-1834
Sacramento, California 95825 - 1886
 
 
Prepared by:
Ecology and Environment, Inc.
4888 Pearl East Circle, Suite 108
Boulder, Colorado 80301 
 

 

Rathburn-Petray Revised Draft EE/CA 08-04-08

Table 8-1:  Comparative Alternative Analysis

Figure 2-1:  Site Location Map

Figure 3-1:  Sample Locations

Figure 4-1:  Site Conceptual Exposure Model

Figure 7-1:  Alternatives - Site Features

Figure 7-2:  Alternatives - Petray North

Figure 7-3:  Alternatives - Petray South

Figure 7-4:  Alternatives - Rathburn North

Figure 7-5:  Alternatives - Rathburn South

Figure 7-6:  Alternative 5 - Offsite Disposal

Appendix A:  Cost Estimates

Appendix B:  Photographs

Appendix C:  Supporting Data and Documents

   
Last updated: 08-06-2008