The Hinds County Wood Preserving Company, Inc. (HCWP) began operations in the early 1960s and ceased operations around 1978. HCWP treated lumber with creosote in two pressure vessels. Remaining on-site as of 11/06/2006 were both pressure vessels (Tanks 2 and 6), three above-ground storage tanks (AST) (Tanks 1, 3, and 5), the facility boiler (Tank 4), and various pieces of equipment and treated lumber. The removal assessment determined 1) that each of the three ASTs contains some amount of material with a collective total of approximately 14,000 gallons, 2) each of the pressure vessels contains some amount of residual creosoting material and one was actively leaking, 3) seven drums of waste oil-water mixture were left on-site, 4) the boiler unit insulation contained asbestos while the pressure vessel’s insulation did not, and 5) equipment contaminated with creosote remained on-site.
The site is drained by several ditches that converge at the northeast, adjacent to Learned Oakley Road, and flow via culverts into Bitter Creek on the east side of the road. The nearest residence is located 120 yards and uphill from the site. The resident maintains a groundwater well on the property, but the house has been connected to a municipal water supply.
Heavy rains over the weekend caused a delay in the excavated area. As before, a subcontractor was hired to pump the pool into a tanker, and the local WWTP again allowed the water to be discharged directly into its system.
Concrete from the site continues disposal to a C&D landfill.
Metal continues to be decontaminated and sent off-site for recycling.
The landowner agreed to allow a borrow pit to be constructed on the property in order to supply clean soil for backfilling when the excavation from the site was complete. A composite sample taken from the agreed-upon area in the front yard at depths ranging from 1 foot to 3 feet in order to establish that the borrow pit area is clean to use for backfill.
USCG GST supplied a TVA-1000, DataRAM and MultiRAE to conduct air monitoring during the excavation. Soils at one area of the pit during excavation, near and underneath where Tank 3 had stood, yielded a strong “gaseous” smell at depths of 4-5 feet. The TVA registered high concentrations of organics at headspace, but low levels in the breathing zone.
- Clearing of vegetation and trees to gain access to contaminated areas. (COMPLETE)
- Removal and bulking of contaminated wastes and/or hazardous substances from tanks and drums. (ONGOING)
- Demolition and removal of tanks and removal contaminated materials such as abandoned equipment. (ONGOING)
- Excavate, stockpile and re-locate the contaminated surface soil. (ONGOING)
- Collect and analyze confirmation samples from the excavated areas. (ONGOING)
- Restore and backfill excavated areas with clean fill.
- Conduct additional sampling for waste profiling. (ONGOING)
- Additional sampling to confirm extent and boundary of migrated contaminants. (ONGOING)
- Complete excavation
- Complete deconstruction of Tank 6
- Design treatment system for washwater in frac-tank
- Determine usability of the borrow pit
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