Prior to EXO TECIfs involvement. extensive soil excavation was performed of the former gasoline UST pits followed by an unsuccessful injection using only hydrogen peroxide. EXO TECH was then contracted and mobilized to the site and installed additional injection wells and performed three small dose injections using persulfate activated with hydrogen peroxide.
Due to preferential pathways caused by poorly compacted U.only small quantities of oxidant could he injected, however, a 'Monitor Only' status was achieved due to the reduction in dissolved benzene.
Further injection is pending future monitoring results.