See previous POLREP
ERRS excavated approximately 4,000 tons of battery debris and lead-contaminated soil. ERRS stockpiled these soils in a poly-lined staging area, and secure the stockpile of soil daily with poly covering. ERRS collected a composite soil sample from this stockpile for TCLP analysis; the analytical results were received on December 17, 2009. The TCLP sample had 107 mg/L lead and 5.0 mg/L and above is considered "hazardous" . The stockpiled soils on Site have been designated as "hazardous" and the contractor has begun to made arrangements for T&D of the contaminated soil.
ERRS received the analytical results from the personal air samples that were collected from four personnel while in the hot zone during an 8-hour period. The highest concentration of lead was determined to be 0.0048 mg/m3. It was determined that respiratory protection is no longer needed in the "hot zone". START will continue to monitor the particulate levels in the hot zone to ensure that respiratory protection is not required for excessive dust.
START has collected particulate data from the western, eastern, and southern perimters of the Site to ensure that minimal dusts are migrating from the Site during operations. No particulate monitor is running along the northern perimeter of the Site due to the absence of residential properties in that direction.
Analytical data from the December 10, 2009, sampling event verified that the remaining soils on Site contain lead at concentrations up to at least 59,000 mg/kg. START collected 10 soil samples from the surface of the lower road that ERRS constructed. The samples were shipped on December 18, 2009.
During this time period, Site was visited be respresentatives of Fish and Wildlife, members of the City of Bristol and Virginia Department of Environmental Quality. The OSC gave each of them a tour of the Site and explained current activities.
Site operations were shut down for the holiday period. Site operations will resume on January 5, 2010.
Interested parties may view added recent pictures in the Images section of the website: www.epaosc.org/twincities.
1. Remove contaminated sediment from Beaver Creek such that average concentrations along the entire length of the Site do not exceed 91.3 mg/kg lead and 1 mg/kg PCB;
2. Prepare Site for permanent erosions controls by grading and/or removal of soil and debris. Preparing the Site for surface for the permanent erosion controls may require removing or covering soil and debris with lead over 1,000 mg/kg and PCBs over 25 mg/kg such that soil at the surface contains lead less than 1000 mg/kg and PCBs less than 25 mg/kg:
3. Install permanent erosion controls that intend to protect the integrity of the response action and minimize the erosion of the installed cover;
5. Sample and consolidate or otherwise prepare the soils and sediments removed for appropriate off-Site disposal pursuant to Section 121(d)(3) of CERCLA and 40 CFR 300.440;
6. Dispose of off-Site all soils and sediments removed in accordance with Section 121(d)(3) of CERCLA and 40 CFR 300.440.
Continue excavation of designated areas.
Continue coordination with local and state officials.
1. Concentrations of lead in Site soils were determined up to 149,000 mg/kg.
2. Concentrations of lead in Site sediments were determined up to 677 mg/kg.
3. Concentrations of PCBs in Site soils were determined up to 66 mg/kg.
4. Concentrations of PCBs in Site sediments were determined up to 2 mg/kg.
|
