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.
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.