Groundwater remediation involves the injection of  MuniRem^® solution into the site groundwater to instantly degrade the dissolved contaminants and create permeable reactive aquifer solids for long-term treatment of the plume. We also rejuvenate and enhance zero-valent iron treatment barriers not performing as designed. Our engineered phytoremediation designs reinforced with biochar offers a semi-passive cleanup solution for both organic and inorganic contaminated groundwater.