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Environmental Project Summary
Project:
Burlington Northern Santa Fe
Havelock Yard Soil
Remediation
Owner/Client:
BNSF Railway Co.
80 - 4th Avenue NE
Minneapolis, MN 55421
Jim Cunningham
(612) 782-3483
Type of Waste / Contaminant:
Lead-impacted rubble and soils
Scope of Work:
Several investigations conducted at the area known as the Havelock Yards in northeast Lincoln, Nebraska, owned and operated by the Burlington Northern Santa Fe Railway (BNSF), resulted in the need for remediation of lead-impacted rubble and soils. It was determined that excavation and treatment would provide the most effective means of clean up of the impacted soils and rubble. Field screening of the material by EA Engineering was conducted during excavation using X-ray Fluorescence (XRF) technology, which allowed for real-time analysis, expediting General Excavating's work. Remediation included segregation of soil/rubble by mechanical process using a Screen-AllÆ. Samples were collected from the stockpiled material and analyzed for Toxicity Characteristic Leaching Procedure (TCLP) lead. Soil piles with TCLP lead below 5.0 mg/L were removed from the site and disposed as a special waste. Material above 5.0 mg/L were stockpiled and stabilized by General Excavating, using a chemical treatment process, MAECTITEÆ, to convert leachable lead to non-leachable mineral forms. A total of 26,600 cubic yards of material was excavated, stabilized, disposed as a special waste, or returned to the excavated area as clean fill. Following removal of the impacted material, General Excavating regraded and seeded the site to provide proper drainage and ground cover. The project was a combination of new technology under new regulations that, with careful material handling, resulted in large-scale clean up of the BNSF site.
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