The scientific focus of this webcast will be on in situ passive samples for environmental monitoring and risk assessment. Other subjects may include the use of passive samplers to carry out surveillance, operation, and investigative monitoring that are necessary to meet the needs of regulatory agencies. With the continued maturation of passive sampling tools, this webcast will also offer more 'hands-on' discussions to tackle specific practical applications of these tools. This webcast will be beneficial to scientists (experts to first-time users), policy makers (regulatory authorities, accreditation bodies) and end users (companies, laboratories, and municipalities) that have a need for monitoring environmental pollution. Presentations on Day 1 (April 24) will include:

• POCIS - Current Applications, On-going Research and Future Needs
• Laboratory Calibration and Field Deployment of the Polar Organic Chemical Integrative Sampler (POCIS) for Pharmaceuticals and Personal Care Products
• Dissipation Of Polar Xenobiotics From Pharmaceutical POCIS And Suggestion Of A Performance Reference Compound
• Investigating Chemicals from Wastewater Discharges in Tinkers Creek
• Using Integrative Passive Samplers To Monitor Current-Use And Legacy Pesticides In San Francisco Bay, California
• Using Passive Samplers in Lake Mead National Recreational Area to Assess Sources of Endocrine Disrupting Compounds
• A Holistic Passive Sampling Calibration For Alkylated Phenols
• Rigid Porous Polyethylene Passive Diffusion Samplers
• A Simple Diffusion Sampler for Pore-Water Hydrogen as a Tool for Understanding Redox Conditions in Saturated Sediment
• Measuring HOC Chemical Activity In Sediments Using Polyethylene Passive Samplers
• Environmental Investigations Using Versatile, Vapor-Permeable, Adsorbent-based Passive Samplers

More information on the 7th Passive Sampling Workshop and Symposium is available through the U.S. Geological Survey web site.