State Coalition for Remediation of Drycleaners Site Profiles
Cox's One Hour Martinizing, Portland, Oregon
Description
|
||||||||||||||||||||||||||||||||||||||||||||||||||||
| The former Cox's One Hour Martinizing Drycleaner site is located in a mixed residential-commercial zone in Portland, OR. A Cox's One Hour Martinizing Drycleaner operated at this site between 1987 and 1998. Another drycleaner operated at this site for approximately 15 years prior to Cox's. The current operator is Wash World. Nature's Fresh, a specialty grocery store, identified low-level PCE groundwater contamination during a due diligence Phase I and Phase II Environmental Site Assessment, and subsequent renovation of the property. The investigations suggested that prior to 1982, disposal of PCE to the catch basin behind the building may have lead to the contamination. The drycleaner solution released to storm water basins may have then leaked into the soil and groundwater. Additional investigations, however, revealed a second catch basin that had been covered by asphalt. Higher levels of PCE contamination were detected by this catch basin. The former Cox's One Hour Martinizing applied to participate in OR DEQ's Dry Cleaner program, and was accepted. |
Contaminants
Contaminants present and the highest amount
detected in both soil and groundwater.
| Contaminant | Media | Concentration (ppb) | Nondetect |
|---|---|---|---|
| Tetrachloroethene (PCE) | groundwater | 32.7 ppb | |
| Tetrachloroethene (PCE) | soil | 25,000,000 ppb |
Site Hydrology
| Deepest Significant Groundwater Contamination: | ||
| Plume Size: | ||
| Average Depth to Groundwater: | 150ft |
Lithology and Subsurface Geology
| silts Depth: 0-5ft bgs 5ft thick Conductivity: 0.09ft/day |
||
| sandy silts or silty sands Depth: 5-14ft bgs 9ft thick |
Pathways and DNAPL Presence
 GroundwaterSediments SoilDNAPL Present |
Remediation Scenario
Cleanup
Goals: |
The OR DEQ seeks to remove the contaminant mass from the source area and protect or mitigate threats to human health or the environment. Project managers will select a final remedy that reduces VOC contamination below site-specific, risk-based concentration levels. |
Technologies
In Situ Soil Vapor Extraction |
Why the technology was selected: Date implemented: Final remediation design: Results to date: Next Steps: Cost to Design and Implement: |
|
Ex Situ Soil Removal |
Next Steps: |
Costs
Cost
for Assessment: |
$27,522.57 (subsurface characterizationand well installation) | |
Cost
for Operation and Maintenance: |
(2 years) $3,446.25 | |
Total
Costs for Cleanup: |
Lessons Learned
| 1. It is important to carefully review historic construction diagrams. The contamination source originally could not be identified at this site. Historical records revealed that a sub-grade ramp loading dock had been covered with asphalt and transformed to above-grade. |
Contacts
| Dan Hafley, R.G., Project Manager Oregon DEQ, Voluntary Cleanup Northwest Region 2020 SW Fourth Avenue, Suite 400 Portland, OR 97201-4987 800-452-4011 or 503-229-5417 hafley.dan@deq.state.or.us Contractor: Lance Johnson, Environmental Engineer AGRA Earth and Environmental, Inc. 7477 SW Tech Center Drive Portland, OR 97223 503-639-3400 LJohnson@agraus.com |
