Site Closure with Multi-Level Treatment Approach at a Former MGP Site using Alkaline Activated Klozur® SP

XDD designed and implemented full-scale treatment of VOC’s and PAH’s using Alkaline Activated Klozur SP at the Mattoon Former Manufactured Gas Plant (MGP). XDD used a combination of permanent injection wells installed along with temporary direct push injection wells to implement the ISCO treatment.

Type of Site

Former MGP Site


Mattoon, IL

Site closure was obtained by receipt of a No Further Action (NFA) letter from the State of Illinois in May 2013. The off -site ISCO treatment was approximately 5% of the total project costs. This cost would have been significantly higher if excavation of the impacts were conducted instead of ISCO.