State Coalition for Remediation of Drycleaners Site Profiles
Pablo Plaza Cleaners, Jacksonville Beach, Florida
Description
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| This is an acitve PCE drycleaning facility that has been in operation since 1986. The facility is located in a shopping center in a mixed retail commercial/residential setting. The facility is located approximately 200 feet west of a small lake is and is approximately 1,500 feet west of the Atlantic Ocean.
The identified contaminant source areas at the site are the soils under the floor slab in the vicinity of the drycleaning machine, the area outside the service door and the storm drain. A sediment collected from the storm drain had the following contaminant concentrations: 110 ug/kg PCE, 20 ug/kg TCE, 12 ug/kg cis 1,2-DCE and 470 ug/kg toluene Remediation Status: In groundwater monitoring |
Contaminants
Contaminants present and the highest amount
detected in both soil and groundwater.
| Contaminant | Media | Concentration (ppb) | Nondetect |
|---|---|---|---|
| cis-1,2-Dichloroethene | groundwater | ||
| cis-1,2-Dichloroethene | soil | ||
| 1,1-Dichloroethene | groundwater | ||
| Tetrachloroethene (PCE) | groundwater | ||
| Tetrachloroethene (PCE) | soil | ||
| Trichloroethene (TCE) | groundwater | ||
| Trichloroethene (TCE) | soil | ||
| toluene | soil | ||
| trans-1,2-Dichloroethene | groundwater | ||
| Vinyl Chloride | groundwater |
Site Hydrology
| Deepest Significant Groundwater Contamination: | 45ft bgs | |
| Plume Size: | Plume Length: 560ft Plume Width: 105ft Plume Thickness: 40ft |
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| Average Depth to Groundwater: | 4ft |
Lithology and Subsurface Geology
| fine-grained sand with organic material Depth: 0-4ft bgs 4ft thick Gradient: 0.0013ft/ft |
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| peat w/ some sand Depth: 4-8ft bgs 4ft thick |
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| silty fine to medium-grained sand with organics Depth: 8-21ft bgs 13ft thick |
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| very fine to fine-grained sand with shells Depth: 21-32ft bgs 11ft thick |
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| silty very fine to fine-grained sand with shells and minor clay Depth: 32-36ft bgs 4ft thick |
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| shell hash with some fine-grained sand Depth: 36-44ft bgs 8ft thick |
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| silty fine-grained sand with clay Depth: 44-46ft bgs 2ft thick |
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| clayey, silty fine-grained sand with shells Depth: 46-48ft bgs 2ft thick |
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| silty fine to medium-grained sand with shells Depth: 48-52ft bgs 4ft thick |
Pathways and DNAPL Presence
 GroundwaterSedimentsSoil DNAPL Present |
Vapor Intrusion Pathway
Has the potential for vapor intrusion (VI) been evaluated? |
No |
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Has a vapor mitigation system been installed? |
Yes | |
Type of Vapor Mitigation System(s): |
Soil Vapor Extraction |
Remediation Scenario
Cleanup
Goals: |
Soil: PCE = 30 ug/kg (leachability0 Groundwater: PCE = 3 ug/l, TCE = 3 ug/l, cis 1,2-DCE = 70 ug/l trans 1,2-DCE = 100 ug/l, 1,1-DCE = 7 ug/l, vinyl chloride = 1 ug/l. |
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Remedy Level: |
Full Scale Remedy |
Technologies
In Situ Biostimulation |
Why the technology was selected: Date implemented: Final remediation design: Results to date: Next Steps: Cost to Design and Implement: |
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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: |
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Ex Situ Carbon Adsorption |
Date implemented: Final remediation design: Results to date: Next Steps: Cost to Design and Implement: |
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Ex Situ Soil Removal |
Why the technology was selected: Date implemented: Final remediation design: Results to date: Next Steps: Cost to Design and Implement: |
Costs
Cost
for Assessment: |
$120,900 | |
Cost
for Operation and Maintenance: |
O&M + Monitoring to date: $243,300 Monitoring per year; $8,000 | |
Total
Costs for Cleanup: |
Lessons Learned
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1. Conditions in groundwater are strongly anaerobic. The ORC injection area was hydraulically down gradient of the identified contaminant source areas. Attempting to convert a large volume of groundwater under anaerobic conditions to aerobic conditions is not feasible and cannot be sustained. In hindsight, a limited injection in the contaminant source areas would have been a better alternative. 2. The case can be made that the interim source removal and operation of the SVE system have done more to reduce contaminant concentrations at the site than the ORC injections. 3. PCE was first detected in groundwater at the site in source area monitor wells in 2007, after the interim source removal and the SVE system was shut down. PCE concentrations as high as 94 ug/l were detected, but no PCE has been detected in groundater since 2009. The source of the PCE was likely a new release. New releases at drycleaning sites are not uncommon. |
Contacts
| Aaron Cohen Florida Dept. of Environmental Protection Bureau of Waste Cleanup, MS 4500 2600 Blair Stone Road Tallahassee, Florida 32399 850-245-8974 Aaron.Cohen@dep.state.fl.us Eric Meyers, P.E. Ecology & Environment, Inc. 1974 Commonwealth Lane Tallahassee, Florida 32303 Phone: (850) 574-1400 E-mail: Emyers@ene.com |
Site Specific References
| Site Assessment Report: 2001 Remedial Action Plan: 2003 SVE Construction Completion Report: 2004-2006 Groundwater monitoring reports: 2002-present. |
