1. Risk Assessment and Monitoring for Environmental Chemicals SURIN AREE Environmental Scientist Thailand

2. Treatment Technologies • Secure Landfill • Drums containing chemicals solution were damaged at Hua Hin Airport • Resulted to soil contamination • Dioxins, pesticides, arsenic and Dicamba were identified • Contaminated soil was contained on-site by excavation and placing in secure landfill

3. My Experience on Risk Assessment and Monitoring Environmental Chemicals • Establish Groundwater and Soil Quality Standards • Groundwater quality standard become the regulation in October 2000 • The limitations of VOCs, heavy metals, pesticides and others [CN-, PCBs, benzo(a)pyrene] • Soil quality standard is on the process to be a legislation

4. My Experience on Risk Assessment and Monitoring Environmental Chemicals (continued) • Monitor Chemical Contaminants Leaching from Municipal Landfills • Groundwater in monitoring wells was collected, analyzed, and compared to groundwater standard for drinking purposes • Parameters analyzed: heavy metals

5. My Experience on Risk Assessment and Monitoring Environmental Chemicals (continued) • Develop Contaminated Site Management Guidelines