State Coalition for Remediation of Drycleaners Site Profiles
Sunshine Cleaners, Tamarac, Florida
Description
|
This is an active PCE drycleaning facility that has been in operation since 1978. The facility is located in a shopping center in a retail commercial/residential setting. Remediation Status: Site closed |
Contaminants
Contaminants present and the highest amount
detected in both soil and groundwater.
Contaminant | Media | Concentration (ppb) | Nondetect |
---|---|---|---|
cis-1,2-Dichloroethene | groundwater | 216 ppb | |
1,1-Dichloroethene | groundwater | 4.1 ppb | |
Tetrachloroethene (PCE) | groundwater | 627 ppb | |
Tetrachloroethene (PCE) | soil | 170 ppb | |
Trichloroethene (TCE) | groundwater | 527 ppb | |
trans-1,2-Dichloroethene | groundwater | 10.5 ppb | |
Vinyl Chloride | groundwater | 7.9 ppb |
Site Hydrology
Deepest Significant Groundwater Contamination: | 55ft bgs | |
Plume Size: | Plume Length: 480ft Plume Width: 120ft Plume Thickness: 55ft |
|
Average Depth to Groundwater: | 8ft |
Lithology and Subsurface Geology
silty, fine-grained sand Depth: 0-30ft bgs 30ft thick Conductivity: 128ft/day Gradient: 0.0008ft/ft |
||
fine to medium-grained sand, some limestone gravel and shells Depth: 30-65ft bgs 35ft thick |
Pathways and DNAPL Presence
Groundwater Sediments Soil DNAPL Present |
Vapor Intrusion Pathway
Has the potential for vapor intrusion (VI) been evaluated? |
No |
|
Has a vapor mitigation system been installed? |
Yes | |
Type of Vapor Mitigation System(s): |
Soil Vapor Extraction |
Remediation Scenario
Cleanup
Goals: |
Groundwater: PCE = 3.0 µg/L, 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, vinyl chloride = 1.0 µg/L Soil: PCE = 30 µg/L (leachability) |
Technologies
In Situ Monitored Natural Attenuation |
Why the technology was selected: Results to date: Next Steps: |
|
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: |
Costs
Cost
for Assessment: |
$99,900 | |
Cost
for Operation and Maintenance: |
O&M: $31,900 Monitoring: $31,800 Site Restoration: $5,000 | |
Total
Costs for Cleanup: |
$266,600 |
Lessons Learned
1. Closure of sites with low level, shallow groundwater contamination can be achieved by remediating the unsaturated zone soil source. 2. Left untreated, contaminants present in the unsaturated zone beneath a building will continue to source groundwater contamination when the water table contacts the unsaturated zone source during seasonal rises. 3. Installation of vapor reovery wells beneth the floor slab and as close to the source as possible (very often in and near the location or former location of the drycleaning machines) is an effective remedial technique. |
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 Bruce Wilson, PG, Consultant Ecology & Environment 1950 Commonwealth Lane Tallahassee, Florida 32303 Phone: (850) 574-1179 |
Site Specific References
Site Assessment Report - February 2000 Remedial Action Plan - June 2001 Operation & Maintenance Reports & Monitoring Reports |