Hylebos Waterway Brownfield

Fuel Terminal Expansion –¬†Tacoma, WA

Targa New TanksCRETE performed environmental due diligence for the acquisition of an asphalt refinery. The refinery was located within a multi-PLP CERCLA site. A limited investigation was performed to verify environmental conditions and to estimate environmental liability. The property has been used as a petroleum bulk terminal since its acquisition.

Successful operation of the terminal triggered expansion to carry renewable fuels. CRETE assisted with the environmental due diligence for the acquisition of a neighboring property on the Hylebos Waterway that was used for fungicide manufacturing and as a treatment, storage, and disposal facility operated by a tank cleaning company. CRETE completed the investigation, feasibility study, and cleanup action plan.

The cleanup included demolition, stabilization of dangerous wastes, confirmation sampling to demonstrate cleanup, disposal of waste soil/water, and UST identification and removal. The compressed schedule for site development forced an accelerated cleanup, which was accomplished by utilizing a quick-acting stabilization agent, by working closely with the Pierce County Health department on permitting and disposal of the waste, and by working directly with the permitting agencies for UST abandonment and disposal. Key elements included:

  • Completed an RI/FS and Cleanup Action Plan with Ecology under the Voluntary Cleanup Program
  • Disposed of 7,000 tons of contaminated soil
  • Delineated and removed discovered USTs and responded to soil impacts discovered outside the original cleanup area
  • Stabilized leachable metals by in-place soil mixing with a new stabilization agent to reduce costs and shorten the schedule by 2 weeks
  • Permitted, designed, and implemented cleanup within 3 months.

Cleanup was successfully completed and CRETE is currently performing long-term groundwater monitoring.

Work PerformedTarga Exc Tanks Bkgrnd

  • Property transaction due diligence
  • Regulatory negotiations – MTCA
  • Upland RI/FS
  • Permitting –¬†construction stormwater
  • Shoreline site cleanup and development coordination
  • Construction plans and specifications
  • Construction oversight

Value Added

  • Negotiated, designed, and implemented cleanup under tight schedule to facilitate site redevelopment
  • Used an innovative metals stabilization agent to reduce costs and support schedule
  • Achieved groundwater cleanup levels 2 years after cleanup was implemented
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