Featured Site
Client Reference: Ms. Kira Lynch, Project Director, Seattle District, U.S. Army Corps of Engineers (ACOE), (206) 764-6918
TRS Project Manager: Joe Sturza, Project Manager, TRS, (360) 748-0877, jsturza@thermalrs.com
Contracting Terms and Number: Performance Based Guaranteed Fixed Price, #DACA67-02-C-0218
Contract Award: $25M of which ~$12M has been released.
Performance Period: Winter 2003 - Spring 2007.
Contaminants: Chlorinated Hydrocarbons and Petroleum, Oil, and Lubricants.
Technologies: Electrical Resistance Heating and Multi-Phase Extraction.
Geology: Glacial deposits of sand, gravel, clay, silt.
Contaminant Levels: LNAPL and DNAPL.
Site Constraints: Groundwater flow velocities as high as 20 feet per day.
Mass Removed in Area 1: 95,029 lbs of mass was removed of which 93% was total petroleum hydrocarbons (TPH), about 6% was TCE and the remaining 1% was cis DCE and vinyl chloride.
Final TCE Results in Area 1: 99.5% average reduction of TCE in groundwater and 99.7% average reduction of TCE in soil.
Mass Removed in Area 2: 27,876 lbs of mass was removed of which about 90% was TPH, about 9% was TCE and the remaining 1% was cis DCE and vinyl chloride.
Final Results in Area 2: 93.4% average reduction of TCE in groundwater and 99.99% average reduction of TCE in soil.
Mass Removed in Area 3: 3,665 lbs of mass was removed of which about 50% was TCE, about 30% was TPH and the remaining 20% was cis DCE and vinyl chloride.
Final Results in Area 3: 98.1% average reduction of TCE in groundwater. At the time of this project description results for TCE in soil were not available.
East Gate Disposal Yard
Fort Lewis Army Base
Tacoma, WA
Guaranteed Remediation of DNAPL and LNAPL using Electrical Resistance Heating and Multi-Phase Extraction
The size of the treatment areas, the types of contaminants, the high energy depositional environment and the in depth studies of the effects of heat on in situ biotic and abiotic degradation make this the largest and most complex guaranteed, performance based, fixed price Electrical Resistance Heating project ever implemented.
Site Characteristics and Design Parameters
NAPL Area 1
NAPL Area 2
NAPL Area 3
Conclusions
Background
Thermal Remediation Services, Inc. (TRS), as the prime contractor, designed and operated Electrical Resistance Heating (ERH) systems for the in situ thermal remediation of LNAPL and DNAPL from three source areas at the Ft. Lewis, East Gate Disposal Yard (EGDY).
Key participants in this complex, multi-agency project included:
- Mr. Richard Wilson – Installation Restoration Program Manager
- U.S. Army Corps of Engineers, Seattle District – Project Manager
- Ft. Lewis Public Works – EGDY Site Manager
- Thermal Remediation Services, Inc. – Prime Remediation Contractor
- AMEC – Thermal Remediation Services Subcontractor
- CDM - Thermal Remediation Services Subcontractor
- Gary Struthers and Associates - Thermal Remediation Services Subcontractor
- U.S. Environmental Protection Agency (EPA)
- U.S. Army Environmental Center (AEC)
- Pacific N.W. National Laboratory (Battelle/PNNL)
- Strategic Environmental Research and Development Program (SERDP)
- Environmental Security Technology Certification Program (ESTCP)
Contaminants of concern include chlorinated solvents, primarily trichloroethene (TCE), and petroleum products, oil and lubricants (POLs). The complete project involved the thermal remediation of NAPL Areas 1, 2 and 3 within the EGDY. Figure 1 illustrates the site layout for NAPL Area 2.
Site Characteristics and Design Parameters