State Coalition for Remediation of Drycleaners Site Profiles
Toni's Cleaners, Boca Raton, Florida
Description
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| Toni's Cleaners is an active PCE drycleaning facility that has been operating since 1993. The facility is located in a shopping center in a mixed commercial retail/residential setting. The contaminant source area identified during the site assessment was a storm water drain located just outside the service door of the drycleaning facility. High concentrations of PCE, TCE and cis 1,2-DCE were detected in sediments/soils, in the drain which receives stormwater and is connected to perforated piping to allow for infiltration into the ground(French drain system, or soakage pit). |
Contaminants
Contaminants present and the highest amount
detected in both soil and groundwater.
| Contaminant | Media | Concentration (ppb) | Nondetect |
|---|---|---|---|
| cis-1,2-Dichloroethene | groundwater | 130 ppb | |
| cis-1,2-Dichloroethene | soil | 470,000 ppb | |
| 1,1-Dichloroethene | groundwater | 3 ppb | |
| Tetrachloroethene (PCE) | groundwater | 359 ppb | |
| Tetrachloroethene (PCE) | soil | 1,500,000 ppb | |
| Trichloroethene (TCE) | groundwater | 35 ppb | |
| Trichloroethene (TCE) | soil | 1,300,000 ppb | |
| trans-1,2-Dichloroethene | groundwater | 6 ppb |
Site Hydrology
| Deepest Significant Groundwater Contamination: | 45ft bgs | |
| Plume Size: | Plume Length: 65ft Plume Width: 180ft |
|
| Average Depth to Groundwater: | 9ft |
Lithology and Subsurface Geology
| fine-grained silica sands, some carbonate sand and limestone gravel Conductivity: 37.5ft/day Gradient: 0.0015ft/ft |
Pathways and DNAPL Presence
 GroundwaterSedimentsSoil DNAPL Present |
Remediation Scenario
Cleanup
Goals: |
Soil: PCE & TCE = 30 µg/kg, cis 1,2-DCE = 400 µg/kg Groundwater: PCE & TCE = 3.0 µg/L, cis 1,2-DCE = 70 µg/L, trans 1,2-DCE = 100 µg/L, 1,1-DCE = 7.0 µg/L |
Technologies
In Situ Monitored Natural Attenuation |
Why the technology was selected: |
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Ex Situ Soil Removal |
Why the technology was selected: Date implemented: Final remediation design: Results to date: Cost to Design and Implement: |
Costs
Cost
for Assessment: |
$73,700 | |
Cost
for Operation and Maintenance: |
$39,800 (groundwater monitoring) $5,400 (site restoration) | |
Total
Costs for Cleanup: |
$126,900 |
Lessons Learned
| 1. If the contaminant source area is accessible, source removal (excavation) can be an effective remedial method and, coupled with monitored natural attenuation, may be an effective means for closing sites with limited groundwater contamination. |
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 Contractor: Bruce Wilson, PG Ecology & Environment 1950 Commonwealth Lane Tallahassee, Florida 323303 Phone: (850) 574-1400 Bwilson@ene.com |
Site Specific References
| 1. Contamination Assessment Report - November 1997 2. Groundwater Monitoring Reports 1999 - 2001 |
