Contaminant Chemistry Overview

• Functional Groups, Chemical Properties, and Hazards

Transport Mechanisms

• Advection
• Mechanical Dispersion
• Diffusion (Chemical Dispersion)

Contaminant Solubility Rules

• Molecular Structure
• Effective Solubility

3- and 4-Phase Equilibrium Partitioning

• Adsorption and Absorption
• Applications of Kd, Koc, foc, Kow, and KH
• NAPL and the One Percent Rule
• Molar Fraction Calculations- Contaminant Mass Fraction Calculation
• Residual Saturation Calculation

Groundwater Transport

• Hydrogeology Review
• Three Point Problem
• Groundwater Velocity Calculations
• Retardation and Solute Velocity Calculations

Nonaqueous Phase Liquid (NAPL) Transport

• Capillary Fringe Interactions and Smear Zones
• Estimating LNAPL Thickness from Well Free Product
• Estimating DNAPL Critical Height

Vapor Transport

• Vapor Pressure, Solubility, Molecular Weight, and Vapor Density
• Contact Surface and Henry's Law Partitioning
• Vapor Diffusion and Air-Filled Porosity

Natural Attenuation

• Overview of Natural Attenuation Processes
• Biodegradation Pathways for Common Contaminants

Focus on Hydrocarbon Contamination

• Gasoline and Diesel Chemistry
• BTEX, Oxygenates, Additives, and Other Potential Concerns
• Ethanol Cosolvation and Plume Elongation
• Geochemical Indicators of Natural Attenuation
• Plume Behavior and Zones

Focus on Chlorinated Hydrocarbon Contamination

• Chlorinated Solvent Chemistry
• Type I, II, and III Plume Behavior
• Reductive Dechlorination and Cometabolization
• Geochemical Indicators of Natural Attenuation

Focus on Metal Contaminants

• Mobility, pH, and Amphoterism
• Dissolved and Particulate Forms
• Cation/Anion Exchange and Variably Charged Soils
• Complexation, Chelation, and Ligands
• Hydrated Metals as Acids

Pamela Schultz  received a B.A. in Chemistry from Providence College in 1992. She worked at the Savannah River Ecology Laboratory while completing her M.S. in Environmental Sciences and Engineering from Clemson University in 1996. After receiving her M.S., she worked as a senior environmental engineer at Merck & Co., Inc., conducting contaminant transport modeling and human health risk assessments for air permitting and remediation projects. In 1999, she joined RTI International as a research environmental engineer, conducting multimedia fate and transport modeling to support U.S. EPA decision making. In the fall of 2004, she entered the graduate program in Environmental Sciences and Engineering at the University of North Carolina studying the behavior of dense non-aqueous liquids in porous media under Dr. Cass T. Miller. Her research has focused on the characterization and remediation of tar contaminated media at former manufactured gas plants. She received her PhD in 2011.

Scientific calculator, mechanical pencil, coffee mug and water bottle (to reduce waste). Please wear comfortable clothing appropriate for the prevailing weather.

Cancellation Policy

• 31 days prior to training -> 100% refund
• 30-16 days prior to training -> 50% refund
• 15 - start of course -> No refund available

Attendee replacement acceptable at anytime.

Course registration fees and cancellation policy are subject to change without notice.
 

Disability Accommodations

To request disability accommodations, please contact us at info@nwetc.org or 425-270-3474 at least 30 days prior to the event.