State Coalition for Remediation of Drycleaners Site Profiles
Fuller Supply, Concord, North Carolina
Description
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| The facility previously stored and distributed PCE. The site is currently a drycleaning supply facility, but no longer supplies drycleaning solvents for resale. Drycleaning operations have not been performed on-site. Remediation Status: In active remediation |
Contaminants
Contaminants present and the highest amount
detected in both soil and groundwater.
| Contaminant | Media | Concentration (ppb) | Nondetect |
|---|---|---|---|
| Benzene | groundwater | ||
| Benzene | soil | ||
| cis-1,2-Dichloroethene | groundwater | ||
| cis-1,2-Dichloroethene | soil | ||
| 1,2-Dichloroethane | groundwater | ||
| 1,1-Dichloroethene | groundwater | ||
| ethylbenzene | soil | ||
| Tetrachloroethene (PCE) | groundwater | ||
| Tetrachloroethene (PCE) | soil | ||
| Trichloroethene (TCE) | groundwater | ||
| Trichloroethene (TCE) | soil | ||
| Vinyl Chloride | groundwater | ||
| Vinyl Chloride | soil |
Site Hydrology
| Deepest Significant Groundwater Contamination: | 120ft bgs | |
| Plume Size: | Plume Length: 1,110ft Plume Width: 470ft Plume Thickness: 120ft |
|
| Average Depth to Groundwater: | 8.75ft |
Lithology and Subsurface Geology
| Mixture of sand, silt, and clay coarsening with depth to saprolite Depth: 0-67.5ft bgs 67.5ft thick Conductivity: 2.16ft/day Gradient: 0.02ft/ft |
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| Plutonic bedrock Depth: 67.5ft bgs |
Pathways and DNAPL Presence
 GroundwaterSedimentsSoil Presumptive Evidence of DNAPL |
Vapor Intrusion Pathway
Has the potential for vapor intrusion (VI) been evaluated? |
Yes |
|
How was the site evaluated? |
Soil vapor and/or Sub-slab vapor sampling,Indoor air sampling,Groundwater sampling,Compared sample concentration to screening criteria,Used an exposure screening model |
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Results of VI evaluation: |
A potential VI pathway has been indentified | |
Has a vapor mitigation system been installed? |
No | |
Additional VI Information: |
Investigation is underway to evaluate whether indoor air impacts are associated with indoor source or VI. |
Remediation Scenario
Cleanup
Goals: |
Goal of interim action was to mitigate surface water impacts. Additional action to address possible VI concerns and stabilize plume have not yet been implemented. |
|
Remedy Level: |
Interim Action |
Technologies
In Situ Bioremediation |
Why the technology was selected: Date implemented: Final remediation design: Other technologies used: Results to date: Next Steps: Cost to Design and Implement: |
|
In Situ Permeable Reactive Barriers (PRB) |
Why the technology was selected: Date implemented: Final remediation design: Other technologies used: Results to date: Next Steps: Cost to Design and Implement: |
|
In Situ Zero Valent Iron |
Why the technology was selected: Date implemented: Final remediation design: Other technologies used: Results to date: Next Steps: Cost to Design and Implement: |
Costs
Cost
for Assessment: |
$335,388 | |
Cost
for Operation and Maintenance: |
$0 | |
Total
Costs for Cleanup: |
on-going |
Lessons Learned
| The PRB successfully addressed a portion of the plume discharging to the stream, but the PRB location and length should be carefully designed so the plume cannot flow around the PRB. |
Contacts
| Delonda Alexander, NC DSCA Program, 1646 Mail Service Center, Raleigh, North Carolina 27699-1646, (919) 707-8365, delonda.alexander@ncdenr.gov |
Site Specific References
| 1/20/10 Interim Remedial Actions Activity Report, 4/4/11 Annual Groundwater Monitoring Report |
