In article <2vhco7$kp5 at biosrv1.bio>, gtkleinh at mtu.edu (Gregory T. Kleinheinz) writes: We are working in biological field applications throughout the Midwest. Typically, in PHC soils we are using biostimulation with no addition of organisms. Please feel free to e-mail for specifics. Kevin B. Hopkins Waste Abatement Tech. LP.