Remediation of Metal and Metalloid Contaminated Groundwater -- Bioremediation In Situ of Polluted Soil in a Uranium Deposit -- Vital Soil Versus Contaminants -- Chemical Oxidation for Clean Up of Contaminated Ground Water -- Detection and Measurement Techniques to Identify the Presence of NAPLs in the Field -- Immobilization of Heavy Metals and Stable Organics from Aqueous Systems on Modified Activated Carbon -- Remediation of the Former Military Airport: Triangle Zatec -- Aquifer Remediation and Chemical Recovery following a Spill due to an Earthquake in Turkey -- How to Remediate Pollution with Mercury and Hexachloro-Cyclohexane Residues in a Chemical Plant -- Decision Support System for Evaluation of Treatment Train for Removal of Micropollutants -- Simulation of the Radon Flux Attenuation in Uranium Tailings Piles -- Biochemical Oxidation - A Pathway for Ammonia Removal from Aquatic Systems -- Biobeds - Biotechnology for Environmental Protection from Pesticide Pollution -- Incd-Ecoind Experience in Bio-Treatment of the Organic Compounds and Heavy Metals Polluted Soils -- Review of Characterization and Remediation Technologies for NAPL's in Groundwater -- Mass Flux as a Remedial Performance Metric at NAPL Contaminated Sites -- Carbon/Polymer Composite Adsorption-Filtering Materials for Individual Protective Systems. Soil and groundwater pollution caused by contaminants including petroleum hydrocarbons, represents a serious threat to the environment in NATO and NATO Partner countries. Solutions are needed that represent practical alternatives to costly remedial strategies yet still yield benefits to site managers. This publication comprises the presentations made at the NATO Advanced Research Workshop held in Sinaia, Romania 9 - 11 October, 2006. The contributions represent a wide range of issues and challenges related to contaminated site management from low cost solutions to petroleum contaminated sites to advances in biological treatment methods. This publication is meant to foster links between groups facing challenges cleaning up contaminated sites through presentations that explore the problems currently being addressed and solutions that are emerging in the field.