IN SITU CHEMICAL OXIDATION SHORT COURSE DESCRIPTION, OUTLINE, AND BIOS Presented by Will Caldicott of In Situ Oxidative Technologies, Inc.

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1 IN SITU CHEMICAL OXIDATION SHORT COURSE DESCRIPTION, OUTLINE, AND BIOS Presented by Will Caldicott of In Situ Oxidative Technologies, Inc. In-situ oxidation techniques have been utilized by the North American environmental industry to remediate organic compounds in subsurface environments for almost 20 years. The success or failure of an ISCO remediation project often hinges on a well-constructed conceptual site model and, just as importantly, a significant understanding of the treatment capability of each oxidant. This course is designed to provide LSPs with an in-depth understanding of each oxidant s strengths and limitations and will cover topics including; investigation parameters, reasonable treatment goals, strengths and weaknesses of each reagent, COC phase and oxidant selection, treatability test selection, methods of delivery, and pilot through full-scale implementation. There will be multiple case histories and a discussion of lessons learned through years of reagent applications. Workshop Schedule 12:30pm Registration 1:00 Overview for the Day 1:15 What is ISCO? Discussions of steps to be taken before ISCO selection, managing expectations, commonly used ISCO technologies with an introduction to oxidant reagents. 2:00 Introduction to oxidant reagents, reagent applicability, site characterization and oxidant selection 3:00 Break 3:15 Implementation Methods, Treatability Testing, Pilot Testing and Full Scale Implementation 4:00 Case Histories 4:45 Summary and Questions 5:00 Adjourn

2 Outline 1. Introduction a. Academic/professional background b. Course outline c. Course goals/objectives d. Course perspective (derived from practical experience) 2. What is ISCO? 3. Steps before ISCO a. Lithology b. Type of contamination c. Nature of contamination d. Determination of contaminated zone(s) e. Estimating mass f. Site constraints 4. Managing expectations a. Reasonable treatment goals b. Combining remedial technologies 5. Commonly Used ISCO Technologies a. Overview of reagents and technologies b. Reactive species associated with each reagent c. Steps before ISCO 6. Introduction to oxidant reagents a. Ozone b. Peroxone c. Sodium/potassium permanganate d. Sodium persulfate

3 iv. Persulfate activators v. Advantages/disadvantages e. Fenton s reagent i. Delivery ii. Advantages/disadvantages f. Modified Fenton s reagent g. Oxidant combinations and synergy 7. Reagent applicability a. LNAPL and DNAPL source zone removal of adsorbed/residual phase b. Applicable geologic settings (incl secondary porosity) c. Applicable CoC concentrations (e.g. use in high dissolved phase where NAPL or adsorbed/res idual phase is inferred) d. Use/effectiveness for removal of adsorbed/residual phase e. Regulatory concerns 8. Site Characterization (defines the success of remediation) a. Lithology/Boring logs/geologic Setting (x sections)/hydrogeology (hydraulic conductivity)/porosity/ph b. NAPL/CoC Distribution/Dissolved Plume Geometry/architecture (current and historical) c. SOD/NOD d. Conceptual site model/plume delineation (3 D understanding of hydrogeology and plume) e. Technologies to better define/delineate site f. Seasonal Water Table Fluctuation 9. Oxidant Selection a. CoCs vs. oxidizing species b. Geology vs. reagent consistency c. Determining credible implementation method for the site d. Cost 10. Implementation Methods a. Direct push points b. Fixed wells c. Horizontal wells/infiltration galleries d. Well socks e. Continuous injection f. Recirculation g. Combining injection with vapor or gw extraction h. Soil mixing 11. Treatability Testing a. SOD/NOD tests b. Reactor tests i. Evaluating CoC response to increased reagent dosing ii. Determining level of field effort needed to achieve targets

4 iii. Comparison of different oxidants/combination of oxidants iv. Surfactant/co solvent enhanced NAPL treatment c. Column testing i. CoC removal efficiency i. Reagent breakthrough 12. Pilot testing a. Baseline sampling (groundwater and soil) b. Radius of influence c. Injection rate/duration d. Minimization of surfacing e. Multiple injection rounds for source areas f. Treatability of CoCs in field conditions 13. Full Scale Implementation a. Based on Pilot Test and Bench Scale Results b. Typically multiple treatment rounds c. Source vs. diffuse plume treatment d. Data evaluation between rounds to determine scale of subsequent round e. Treatment endpoint determination f. Evaluation of final polishing options chemox/bio/mna 14. Case Histories a. MA cases b. Persulfate applications c. Permanganate applications d. Modified Fenton s applications 15. Summary a. Applicability b. Advantages c. Lessons learned

5 William G. Caldicott In-Situ Oxidation Technologies, Inc. (ISOTEC) Will Caldicott is the Director of Technical Business Development for ISOTEC in Princeton NJ. Mr. Caldicott directs the marketing of chemical oxidation services to public, private and commercial clients as well as to federal, industrial and consultant markets. Mr. Caldicott has worked in the environmental consulting field since He began his career in the field on numerous assessment and soil and groundwater remediation projects. His experience includes statistical analysis and modeling using GIS for urban planning projects. In 2001, Mr. Caldicott was employed by Virotec USA in Boston MA. Virotec is an Australian company that markets a reagent developed from bauxite refinery residue that is used to remediate acidic, heavy metal contaminated media. He was the office and site manager for all North American projects, which included numerous mine tailings, waste rock/soil and water treatment projects at coal and hard rock mines and construction sites; as well as sewage, plating, power generation and other industrial water treatment projects. Mr. Caldicott holds a BS environmental and earth sciences from Southern Cross University, NSW, Australia. He went on to complete post-baccalaureate work in mathematics and astronomy at Cal- Berkeley and holds an MS in Environmental Science from Yale. Prasad Kakarla, PE ISOTEC Mr. Kakarla, Technical Director at ISOTEC has over 16 years of experience with chemical oxidation and is responsible for overall project design, field implementation, project management, reporting and oversight of scientific laboratory testing on soil and groundwater samples at ISOTEC. Mr. Kakarla is also in charge of laboratory research aimed at optimizing treatment efficiencies for both soil and groundwater contamination, performs literature reviews detailing on-going oxidative research, and acts as liaison with academic institutions currently studying oxidative technologies in an effort to optimize ISOTEC treatment technologies. Mr. Kakarla has also served as a research assistant at Washington State University and has completed a thesis on chemical oxidation of sorbed, hydrophobic contaminants in surface soils using in-situ Fenton-like reagents. Mr. Kakarla holds a BS, graduating with honors, in Civil Engineering from the Indian Institute of Technology, Kharagpur, India and an MS in Environmental Engineering from Washington State in Pullman WA.