Section I. Legislative and Management Issues -- 1. Session Summary -- 2. Regulation of Produced Water on the Norwegian Continental Shelf -- 3. Discharges of Produced Water to the North Sea: Effects in the Water Column -- 4. Regulation of Produced Water by the U.S. Environmental Protection Agency -- Section II. Chemistry and Toxicity Issues -- 5. Session Summary -- 6. Estimating the Acute Toxicity of Produced Waters to Marine Organisms Using Predictive Toxicity Models -- 7. A Comparison between the Toxicity of Produced Oil and Gas Condensate Using a New Sediment Bioassay for Deposited Oil -- 8. Produced Water Composition, Toxicity, and Fate: A Review of Recent BP North Sea Studies -- 9. Field Evaluation of Toxic Effects and Dispersion of Produced Water Discharges from North Sea Oil Platforms: Implications for Monitoring Acute Impacts in the Environment -- 10. Sub-Lethal Effects of Oil-Produced Water on the Early Life Stages of Turbot -- 11. Exposure of Cod Larvae (Gadus morhua L) to Phenols in Produced Water during the Critical Period of First Feeding -- Section III. Environmental Effects -- 12. Session Summary -- 13. Ecotoxicological Risk of Produced Water Discharged from Oil Production Platforms in the Statfjord and Gullfaks Field -- 14. The N-Octanol/Water Partition Coefficient: A Critical Parameter in Environmental Risk Assessment of Offshore E&P Chemicals -- 15. Effects of the Water Soluble Fraction of Crude Oil on Marine Fish Larvae and Crustaceans -- 16. Aromatic Hydrocarbons in Produced Water: Bioaccumulation and Trophic Transfer in Marine Food Webs -- 17. Delineation of Benthic Impact and Recovery at Two Produced Water Discharge Sites in Inshore Louisiana -- 18. The Effects of Produced Water on Hydrocarbon Levels and on P4501A Monooxygenase Activity in Fish Larvae in the Northern North Sea -- Section IV. Dispersion Models -- 19. Session Summary -- 20. Dispersion Modeling Perspectives on the Environmental Fate of Produced Water Discharges -- 21. Development and Appraisal of a Particle Tracking Model for the Dispersion of Produced Water Discharged from an Oil Production Platform in the North Sea -- 22. A Buoyant Jet/Plume Model for Subsea Releases -- 23. An Intercomparison between Field Measurements and Three Different Calculation Models for Estimates of Dilution Factors -- Section V. Environmental Modelling -- 24. Session Summary -- 25. Environmental Effects of Discharge and Reinjection of Produced Water -- 26. The Role of the Supplier of Production Chemicals in Managing the Environmental Impact of Produced Water in Offshore Oil and Gas Production -- 27. An Introduction to the CHARM Model -- 28. The Charm Model Used in Environmental Risk Management of Produced Water on Ula -- 29. PROVANN: A Model System for Assessing Potential Chronic Effects of Produced Water -- Section VI. U.S. DOE: Gulf of Mexico Studies -- 30. Session Summary -- 31. U.S. Department of Energy Sponsored Study - Environmental and Economic Assessment of Discharges from Gulf of Mexico Region Oil and Gas Operations: An Overview -- 32. Assessing the Potential for Enhanced Bioaccumulation of Heavy Metals from Produced Water Discharges to the Gulf of Mexico -- 33. An Ecological Risk Assessment for Polycyclic Aromatic Hydrocarbons in Produced Water Discharges to the Western Gulf of Mexico -- 34. Naturally Occurring Radioactive Materials Associated with Offshore Produced Water Discharges in the Gulf of Mexico -- 35. Distribution of Finfish Caught Near Oilfield Structures along Coastal Louisiana and Texas -- 36. Risk Assessment for Produced Water Discharges to Open Bays in Louisiana -- Section VII. Technology for Mitigation -- 37. Session Summary -- 38. Air Stripping Combined with FID Detection for Oil-in-Water Analysis -- 39. Dissolved Component Removal from Oilfield Waters -- 40. Report on the Start-up of a Unique Hydrocyclone-Based System for Treating Produced Water -- 41. Produced Water Reinjection (PWRI): Experiences from the Ula Field -- 42. Down Hole Separation (DHS) Technology -- 43. Evaluation of NF/UF Membrane Treatment in De-Oiling Produced Water in-Situ at a Heavy-Oil Production Facility in Western Canada -- 44. Agip and the Environment: Disposal of Produced Water from Gas Fields Exploitation in the Adriatic Sea -- 45. Biological Treatment Process for Removing Petroleum Hydrocarbons from Oilfield Produced Waters -- 46. Pretreatment of Oil Field and Mine Waste Waters for Reverse Osmosis -- 47. Comparison of Injectivity Prediction Models to Estimate Ula Field Injector Performance for Produced Water Reinjection.