Under the Remediation Program, all work plans and budgets undergo review and approval by the Fund, and all environmental activities are performed under the Illinois Environmental Protection Agency’s (EPA) voluntary Site Remediation Program (SRP).  AKT Peerless extensively investigated subsurface environmental conditions at the subject property and characterized the nature and extent of contamination resulting from the former dry-cleaning facility.  The results of the investigation indicated contamination was present at the subject property at concentrations requiring remediation to depths up to 20 feet below ground surface.  Additionally, the investigation confirmed contamination had migrated to the northern and western adjoining properties.  

AKT Peerless initially remediated approximately 500 tons of highly impacted soil at the subject property.  The soil was remediated via in-situ chemical oxidation, which consisted of mixing 9.5 tons of potassium permanganate and 8,000-gallons of water with the impacted soil, within a 400 square foot area to a depth of 20 feet below ground surface.  Confirmatory soil and groundwater sampling indicated the remedial efforts were successful, and remaining contamination at the subject property and adjoining properties could be managed in-place by using risk-based corrective actions.  

To implement the risk-based corrective actions and remain within the maximum budget allowed by the Fund, it was necessary for AKT Peerless to engage in multiple negotiations with the various stakeholders, which accomplished the following:

• The Village of Lombard relaxed zoning and permitting requirements resulting in reduced engineered barrier installation fees; 
• The adjacent property owners permitted low-level contamination to remain on their properties and for risk-based corrective actions to be applied; and
• And the Illinois EPA approved alternate engineered barrier designs and allowed the adjacent properties to be covered by the ultimate NFR Letter.

Following negotiations, AKT Peerless coordinated the installation of a 7,700 square foot asphalt engineered barrier and a 1,300 square foot alternate engineered barrier consisting of three feet of ‘clean’ soil overlying a 40-mil geomembrane.

Upon completion of the SRP reporting requirements, an “No Further Remediation” (NFR Letter) was issued by the Illinois EPA indicating low-level contamination remaining at the subject property and adjoining properties does not present a threat to humans given the placement of engineered barriers and various institutional controls.  The issuance of the NFR Letter ultimately released AKT Peerless’ client from further obligations to the Illinois Attorney General’s Office under the Consent Order.