Drycleaner Site Profiles
Springdale Cleaners, Portland, Oregon
|Springdale Cleaners is an active dry cleaning facility located in a strip mall. The local land use is a mix of high density residential and commercial development. Residents of a neighboring apartment building observed condensed water leaking onto a landscaped planter in the area between the strip mall and the apartment complex. Subsequent investigations in 1998 revealed high levels of perchloroethylene (PCE) in the soil and groundwater at Springdale Cleaners. Additional investigations conducted in May 1999 identified high levels of PCE in the shallow groundwater. The most likely source of PCE contamination is the leaking sewer line extending out of Springdale Cleaners. Investigation officials have confirmed that the drycleaner disposed of wastewater in a floor drain, which led to the sewer line. PCE likely accumulated in low points of the sewer main and leaked into the soil and groundwater. The investigation also indicated that dissolved PCE may have come out of solution and formed DNAPL contamination. The accumulated contamination would then provide a continued source of soil and groundwater contamination even after disposal to the sewer system ceased.
Remediation Status: In active remediation
|Tetrachloroethene (PCE)||groundwater||120,000 ppb|
|Trichloroethene (TCE)||groundwater||35,900 ppb|
|Vinyl Chloride||groundwater||1,920 ppb|
|Deepest Significant Groundwater Contamination:|
|Plume Size:||Plume Length: 150ft
Plume Width: 50ft
Plume Thickness: 15ft
|Average Depth to Groundwater:||20ft|
|sandy, silty clay
Depth: 0-12ft bgs
|grey, silty clay w/increasing sand
Depth: 12-23ft bgs
|Typically, DEQ risk-based concentrations for human health are the remediation goal. The extent of contamination makes it difficult to meet risk-based concentrations in soil and groundwater, although PCE and TCE mass has decreased substantially. Vapor collection before migration into the building is a needed secondary remedial measure.
in Situ Bioremediation
Why the technology was selected:
Final remediation design:
Results to date:
Cost to Design and Implement:
Cost for Assessment:
Cost for Operation and Maintenance:
Total Costs for Cleanup:
Adding biological amendments to fine-grained soils can work, but requires more time for delivery and more injestion points and vertical incremental application.
2. Operating dry cleaners using PCE can make meeting relatively low risk-based standards difficult.
3. Vapor collection is a proven technology but requires a good understanding of the source area and vapor intrusion mechanisms and preferential pathways.
| Mark Pugh, Project Manager
OR DEQ, Northwest Region
2020 SW Fourth Avenue, Suite 400
Portland, OR 97201-4987
Jacobs Engineering, Inc.
1527 Cole Blvd, Suite 100
Golden, CO 80401
| Ash Creek Associates, Inc. (Ash Creek), 2012. 2012 Vapor Mitigation Interim Remedial Action Work Plan, Springdale Cleaners, ECSI No. 2290, Portland, Oregon. March 14, 2012.
Ash Creek Associates, Inc. (Ash Creek), 2009. Interim Remedial Action Work Plan, Springdale Cleaners,
ECSI No. 2290, Portland, Oregon. November 24, 2009.
Ash Creek, 2010. Sub-Slab Vapor Sampling Work Plan, Springdale Cleaners, ECSI No. 2290, Portland,
Oregon. September 20, 2010.
Ash Creek, 2011. Vapor Sampling Work Plan Addendum, Springdale Cleaners, ECSI No. 2290, Portland,
Oregon. April 13, 2011.
2013 Data Report
ECSI No. 2290
November 14, 2003