U.S. ENVIRONMENTAL PROTECTION AGENCYUNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region IV
Subject:
POLREP #19 Progress Update Ore Knob Mine Site A4ND Ore Knob, NC
To:
From:
Terrence Byrd, On-Scene Coordinator
Date:
2/2/2010
Reporting Period:
12/20/09 - 01/31/10
1. Introduction
1.1 Background
Site Number:
A4ND
Contract Number:
D.O. Number:
Action Memo Date:
11/3/2008
Response Authority:
CERCLA
Response Type:
Time-Critical
Response Lead:
Incident Category:
Removal Action
NPL Status:
NPL
Operable Unit:
Mobilization Date:
10/20/2008
Start Date:
10/20/2008
Demob Date:
Completion Date:
CERCLIS ID:
NCN000409895
RCRIS ID:
ERNS No.:
State Notification:
FPN#:
Reimbursable Account #:
1.1.1 Incident Category 1.1.2 Site Description The Site contains areas affected by mining, including three principal areas that were directly affected by mining along with other areas, primarily downstream, where hazardous substances have come to be located. The three principal areas include the 1950s Mine and Mill Area, the 19th Century Operations Area and a Main Tailings Impoundment. The Action memo recommends response actions to address threats from the main tailings impoundment. 1.1.2.1 Location 1.1.2.2 Description of Threat 1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
2. Current Activities
2.1 Operations Section
2.1.1 Narrative 2.1.2 Response Actions to Date
1. 1. Diversion Channel
See Pol/Sitrep #17 for diversion channel description.
Construction of the water dissipator at the end of the channel has begun. OSC received access from adjacent property owner allowing remediation on both sides of the creek bed. The dissipator is anticipated to be finished in 30 to 45 days, weather permitting.2. Site Ponds
See Pol/Sitrep #17 for Site Ponds description.
3. Tailings Dam See Pol/Sitrep #17 for Tailings Dam description.
A. Sediment Pond
No notable changes.
B. Starter Dam
No notable changes.
C. Shear Key
No notable changes
D. Main Tailings Impoundment The dam face of the Main Tailings Impoundment is currently being re-shaped. Four terraces varying in height from approximately eight to twelve feet were constructed in order to create the desired slope.
4. Other/Miscellaneous
START assisted NCDENR with surface water sampling on 01/27/10. START performed soil sampling on 01/28/09/ A railing will be built along the final 500 feet of the diversion channel as a safety measure.
Recycling All soils, rock and water is recycled for use onsite—thus eliminating transportation and disposal costs.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs) 2.1.4 Progress Metrics to date (approximate)
Product Stream Quantity (CY)
Soil
141780
Tailings
78195
Rock
30330
2.2 Planning Section
2.2.1 Anticipated Activities 2.2.1.1 Planned Response Activities 2.2.1.2 Next Steps 2.2.2 Issues Constant precipitation has greatly hampered Site activities. As a result, the crew size has been reduced by half.
In an effort to reduce the carbon footprint of the Ore Knob Mine Site, all paper and plastics are being recycled and no construction waste is being generated on-site. All soils, rock and water is recycled for use onsite, thus eliminating transportation and disposal costs.
2.3 Logistics Section
No information available at this time.
2.4 Finance Section
No information available at this time.
2.5 Other Command Staff
2.5.1 Safety Officer 2.6 Liaison Officer 2.7 Information Officer 2.7.1 Public Information Officer 2.7.2 Community Involvement Coordinator
3. Participating Entities
No information available at this time.
4. Personnel On Site
No information available at this time.
5. Definition of Terms
No information available at this time.
6. Additional sources of information
No information available at this time.
7. Situational Reference Materials
No information available at this time.
