Drycleaner Site Profiles

Denice Cleaners, Coral Springs, Florida

Description
Historical activity that resulted in contamination.

This is an active PCE drycleaning facility that has been in operation since 1985. Reportedly, in 1991 there was a spill of 5-10 gallons of PCE outside the service door of the facility during a solvent delivery. The drycleaning facility is located in a strip mall in a retail commercial/residential setting.

Contaminants
Contaminants present and the highest amount detected in both soil and groundwater.


Contaminant Media Concentration (ppb) Nondetect
cis-1,2-Dichloroethene groundwater 3.9 ppb
1,1-Dichloroethene groundwater 23 ppb
Tetrachloroethene (PCE) groundwater 53 ppb
Tetrachloroethene (PCE) soil 920 ppb
Trichloroethene (TCE) groundwater 4 ppb
Vinyl Chloride groundwater 1 ppb

Site Hydrology

Deepest Significant Groundwater Contamination:   12ft bgs
Plume Size:   Plume Length: 80ft
Plume Width: 60ft
Plume Thickness: 12ft
Average Depth to Groundwater:   5ft

Lithology and Subsurface Geology

 
  Fine- to medium-grained sand
Depth: 0-5ft bgs
5ft thick
Conductivity: 105ft/day
Gradient: 0.008ft/ft
 
  Weathered limestone
Depth: 5-8ft bgs
3ft thick
 
  Medium-grained sand
Depth: 8-15ft bgs
7ft thick
 
  Medium- to coarse-grained sand and limestone gravel
Depth: 15-20ft bgs
5ft thick

Pathways and DNAPL Presence

checkGroundwater
Sediments
checkSoil
DNAPL Present

Remediation Scenario

Cleanup Goals:
  Groundwater: PCE = 3.0 µg/L, TCE = 3.0 µg/L, cis 1,2-DCE = 70 µg/L, 1,1-DCE = 7.0 µg/L, vinyl chloride = 1.0 µg/L

Soil: 30 µg/kg


Technologies

Ex Situ Soil Removal
 

Why the technology was selected:
The contaminated soil was located beneath an alley behind the facility and was accessible.

Date implemented:
October 29-30, 2001

Final remediation design:
Approximately 2.4 cubic yards of soil was excavated with a backhoe. The excavation was backfilled with limerock and the pavement was restored.

Results to date:
Contaminant concentrations in groundwater declined to below MCLs for three consecutive sampling events. A Site Rehabilitation Completion Report was issued on November 5, 2001.

Cost to Design and Implement:
Soil excavation, disposal & site restoration: $ 16,100

Costs

Cost for Assessment:
  $50,200
Cost for Operation and Maintenance:
  Groundwater Monitoring: $ 23,600
Total Costs for Cleanup:
  $ 89,900

Contacts

Theresa Pepe, Project Manager
Bureau of Waste Cleanup (MS4520)
Florida Department of Environmental Protection
2600 Blair Stone Road
Tallahassee, Florida 32399-2400
Phone: 9850) 245-8966
E-mail: Theresa.Pepe@DEP.state.fl.us

Bruce Wilson, P.G.
Ecology & Environment, Inc.
1940 Commonwealth Lane
Tallahassee, Florida 32303
Phone: (850) 574-1400

Site Specific References

Contamination Assessment Report: November 1997

Groundwater Monitoring Reports: 1999-2001

Soil Excavation Letter Report: 2001