Kevin J. Rader, Ph.D.

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1 EDUCATION: Ph.D. in Civil Engineering, University of Delaware, 2010 M.E. in Environmental Engineering, Manhattan College, 2004 B.S. in Environmental Engineering, Manhattan College, 2002 PROFESSIONAL HISTORY: Mutch Associates, LLC: Project Manager, 2009 to present HydroQual, Inc.: Environmental Engineer II, 2008 to 2009 University of Delaware, Department of Civil and Environmental Engineering: Research Assistant, 2004 to 2008 Manhattan College, Department of Civil and Environmental Engineering, Aquatic and Sediment Chemistry Laboratory: Research Assistant, 2000 to 2004 EXPERIENCE SUMMARY: Kevin Rader has more than thirteen years of diversified experience in the field of environmental engineering. He has conducted both experimental and modeling studies investigating the speciation, toxicity, transport, and fate of metals and metalloids in surface waters and sediments. He has helped develop chemical fingerprinting techniques for mixed organic/inorganic groundwater plumes. He has experience developing and validating reactive transport models with userfriendly interfaces. His experience also includes formulating and applying probabilistic and deterministic unit world models for metal risk assessment and hazard classification in rivers and lakes. In conducting these studies, Kevin has acquired considerable expertise working with chemical speciation models such as MINEQL+, Visual MINTEQ, WHAMV, WHAM6 and WHAM7 and has trained others in their use. His groundwater modeling experience includes work with Visual MODFLOW, GMS and Groundwater Vistas and the associated engines MODFLOW 2000, MT3DMS and RT3D. He also possesses experience with ATRANS and BIOSCREEN. He has used these software packages to model flow and contaminant transport in complex glacial deposits and in fractured rock. Most recently he has helped develop custom reaction modules to model in situ chemical treatment of groundwater contamination. PROFESSIONAL AFFILIATIONS: Society of Environmental Toxicology and Chemistry Water Environment Federation

2 SPECIAL TRAINING AND CERTIFICATIONS: New York State Engineer-in- Training HONORS AND AWARDS: Lawrence Eckenfelder Award for Excellence and Leadership in the Undergraduate Study of Environmental Engineering W. Wesley Eckenfelder Award for Excellence and Leadership in the Graduate Study of Environmental Engineering SELECTED PROJECT EXPERIENCE: Assessing Potential Impacts to Water Supply Wells in New York State from Dry Cleaners and Other Sources: Project manager responsible for assisting in document review, data synthesis and preparation of graphical representations of the spatial distribution of potential sources of chlorinated solvents and other organic chemicals in numerous major water supply wells. Contaminant Mass Allocation Assessment for an Industrial Complex: responsible for assisting in rebutting initial chlorinated solvent mass allocation between three industrial sites and developing an alternative allocation approach based on data collected from the soil vapor extraction (SVE) system in operation at the complex. Assessment of Copper Roof Runoff Release Rates, Attenuation, and Ecological Impacts: Program integrator serving as a liaison between the project sponsor and the contractor responsible for collecting data on the amount, environmental impact, and treatability of copper released from copper roofing in stormwater runoff. Duties included coordination of test structure and stormwater treatment technology design and construction, construction oversight, data reporting/dissemination and other project management aspects. Monitoring Copper Concentrations in Freshwater Marinas: Project manager responsible for designing and implementing a sampling study (using clean metal sampling protocols) aimed at assessing copper levels in marinas and the potential impact of copper-based antifouling paints (AFPs). Groundwater Remediation Cost Allocation Assessment for a Superfund Site: Project manager assisting in the development of a quantitative remediation cost allocation based on distribution of several contaminants in groundwater. These included mercury, arsenic, chromium, lead, benzene, napthalene, and other Rader 2

3 PAHs. A Thiessen Polygon approach was used for the allocation. Reactive Transport Modeling of Chlorinated Solvent Degradation using Permanganate: responsible for simulating PCE, TCE, cis-1,2-dce, and vinyl chloride degradation using in-situ chemical treatment with permanganate at a former chemical storage and solvent recovery facility in California. Modeling was performed using RT3D (Reactive Multispecies Transport in 3-Dimensional Groundwater Systems) and a custom reactive transport FORTRAN code. Metal Classification Using a Unit World Model: responsible for assessing metal fate using a speciation and transport model. The model was used to quantify metal removal rates from the water column as well as sediment metal speciation for the purpose of evaluating long-term sequestration. Metals examined included copper, nickel, lead, zinc, cobalt, and arsenic. Predicting the Fate and Effects of Resuspended Metal Contaminated Sediments: responsible for assessing metal speciation in bedded sediments using chemical speciation models. Sediment Quality Investigation at a Chemical Storage Facility: responsible for planning and implementing three phases of vibracore sediment sampling along the facility waterfront. Metals and VOCs were the key contaminants of potential concern. The AVS-SEM paradigm was used to assess the risk associated with metals in sediment. Drawdown Modeling for Meadow View Mine: responsible for developing a screening-level groundwater flow model to assess the drawdown in various substrata associated with construction of a surface mine. In Situ Passive Treatment Feasibility Assessment at Nascolite Superfund Site: Engineer responsible for conducting data analysis to support selection and design of passive groundwater treatment technology. Performed design calculations for implementation of enhanced biodegradation of benzene with oxygen releasing compounds. Formulated sampling plan to generate additional data required to evaluate applicability and assist in design of the remediation technology. Applied BIOSCREEN model to assess potential for natural attenuation. Liability Assessment for Chemical Manufacturing Plant: Engineer responsible for conducting data analysis to support technical documents detailing the extent of groundwater contamination on- and offsite of the plant. Implemented environmental forensic technologies for contaminant source identification. Prepared graphical summaries of data. Applied expertise in chemical kinetics to support reactive transport model development. Reviewed and critiqued modeling analyses of technical expert for the opposition. Performed sensitivity analyses using 1-D and 3-D reactive transport models. Rader 3

4 Groundwater Quality Investigation and Groundwater Flow and Contaminant Transport Modeling for the Pennsauken Landfill: Engineer responsible for troubleshooting groundwater transport model. Additional duties included assisting in groundwater quality analyses and preparing graphical summaries for presentations and technical reports. Conceptual Revised Remediation Action Work Plan for the Pennsauken Landfill Groundwater Remediation: Engineer responsible for conducting contaminant transport modeling to support conceptual design. Additional duties included performing design calculations and writing work plan narrative. Water Quality Data Analysis for the Upper Columbia River: Engineer responsible conducting spatial, temporal, and statistical data analyses and preparing graphical summaries of data. Upgrading Unit World Model for Metals to Include Metal Partitioning/Transport by Hydrous Ferric Oxide (HFO): Engineer responsible for testing metal-hfo speciation sub-model against existing speciation models and troubleshooting model code. Water Quality Data Analysis at Auburn Road Landfill Superfund Site: Engineer responsible for conducting spatial and temporal data analysis to elucidate controlling fate and transport phenomena at the site and support groundwater transport model development. Modeling the Solid-Solution Partitioning of Metals in Rivers and an Estuary: Research Assistant responsible for assessing the accuracy of WHAM6 partitioning calculations in field systems such as the Trinity River, TX; River Aire in Yorkshire, England; Potomac River, MD; Delaware River, NJ, and the Delaware Estuary. Metal sorption to both organic and inorganic constituents of particulate material was considered. Duties included data collection and processing, parameter estimation, model sensitivity analyses, and partial model recalibration. Refinement and Application of the Tableau Input Coupled Kinetic Equilibrium (TICKET) Model: Research Assistant responsible for debugging code and applying the model to describe arsenic redox speciation, partitioning to hydrous ferric oxides, and diffusive transport in an artificial sediment column. Efforts were directed at model validation studies and preparation of associated graphical summaries of results. Development and Application of Unit World Models for Metals: Research Assistant responsible for the development and preliminary testing of a unit world model for metal fate and toxicity in rivers. The model was used to describe concentration distributions in the following systems impacted by metal contamination: Clear Creek, CO; California Gulch, CO; and the Coeur d Alene River, ID. Assisted in the formulation of the unit world model for Rader 4

5 metals in lakes. Aided in application of the model to describe the fate of Cd, Pb, and Zn in Lake Coeur d Alene, ID. Performed detailed partitioning calculations to quantify the relative contributions of metal oxides and organic carbon to metal solid-solution distributions. Translated the WHAM6 model into the native code of the unit world model. Investigating the Bioavailability of Arsenic-Sulfur Complexes: Research Assistant responsible for conducting Microtox toxicity tests to evaluate the toxicity of As(III) and sulfide both separately and together. Successfully modeled the reduction in toxicity associated with the formation of arsenic-sulfide complexes using a chemical equilibrium speciation model. Investigating Silver Partitioning at Low Concentrations: Research Assistant responsible for performing silver sorption experiments using the concept of solubility enhancement. This allowed the study of strong ligands that influence silver speciation and bioavailability at the low silver concentrations observed in natural waters. Additional duties included interpreting the results using chemical equilibrium speciation software. ARTICLES IN PEER-REVIEWED JOURNALS Farley, K. J., Carbonaro, R. F., Fanelli, C. J., Costanzo, R., Rader, K. J., Di Toro, D. M., TICKET-UWM: A coupled kinetic, equilibrium, and transport screening model for metals in lakes. Environ. Toxicol. Chem. 30, Farley K. J., Kevin J. Rader, and Benjamin E. Miller, Tableau Input Coupled Kinetic Equilibrium Transport (TICKET) Model. Environ. Sci. Technol 42(3), Bisceglia K. J., Kevin J. Rader, Richard F. Carbonaro, Kevin J. Farley, John D. Mahony, Dominic M. Di Toro, Iron(II)-Catalyzed Oxidation of Arsenic(III) In A Sediment Column. Environ. Sci. Technol. 39, Rader K. J., Tim S. Shadi, John D. Mahony, And Dominic M. Di Toro, Measuring the Partitioning of Silver to Organic Carbon using Solubility Enhancement. Environ. Toxicol. Chem. 24, Rader K. J., Paul M. Dombrowski, Kevin J. Farley, John D. Mahony, and Dominic M. Di Toro, Effect of Thioarsenite Formation on Arsenic(III) Toxicity. Environ. Toxicol. Chem. 23, PRESENTATIONS AT PROFESSIONAL MEETINGS Rader K. J., Tobiason S., Assessing the Amount, Environmental Impact, and Treatability of Potential Pollutants Released from Roofing Materials during Precipitation Events. Platform Presentation. Roofing Industry Committee on Weather Issues (RICOWI) spring 2014 seminar. Rader 5

6 Bubnyte R., Farley K. J., Rader K. J., Carbonaro R. F., Modeling Metal Cycling and Bioavailability in Lake Coeur d Alene Using the TICKET Unit World Model. Platform Presentation. SETAC North America Annual Meeting Farley K. J., Rader K. J., Carbonaro R. F., Modeling Metal Release and Bioavailability during Resuspension of Anoxic Sediments. Platform Presentation. SETAC North America Annual Meeting LaBarre W., Lev S. M., Ownby D. R., Rader K. J., Casey R. E., Attenuation of the Potential Impacts of Copper Roof Runoff by Stormwater Best Management Practices. Platform Presentation. SETAC North America Annual Meeting Rader K. J., Farley K. J., Carbonaro R. F., Gailani J., Schroeder P., Kim S. C., Burton A., Predicting the Fate and Effects of Resuspended Metal-Contaminated Sediments: Speciation Model Testing. Platform Presentation. 6th International Battelle Conference on Remediation of Contaminated Sediments. Rader K. J., Carbonaro R. F., Farley K. J., Metal Classification using a Unit World Model: Assessing Removal Rates from the Water Column and Remobilization from Sediment with TICKET-UWM. Platform Presentation. SETAC North America Annual Meeting Rader K. J., Carbonaro R. F., Farley K. J., Di Toro, D. M., Performance Assessment of a Chemical Speciation Model. Platform Presentation. SETAC North America Annual Meeting Rader K. J., Carbonaro R. F., Farley K. J., Di Toro, D. M., A Probabilistic Unit World Model for Metal Fate and Toxicity in Rivers. Platform Presentation. SETAC North America Annual Meeting Rader, K. J. and Dominic Di Toro, Investigating Solid-Solution Metal Partitioning in Surface Waters using WHAM6. Platform Presentation. SETAC North America Annual Meeting Rader, K. J. and Dominic Di Toro, Developing a Unit World Model for Metals in Rivers and Streams. Platform Presentation. SETAC North America Annual Meeting Rader K. J., Paul M. Dombrowski, Kevin J. Farley, John D. Mahony, and Dominic M. Di Toro, Effect of Thioarsenite Formation on As(III) Toxicity. Platform Presentation. ACS National Meeting, Mahony J. D., Kevin J. Rader, Tim S. Shadi, And Dominic Di Toro, The Partitioning of Silver to Humic Material. Platform Presentation. SETAC North America Annual Meeting POSTER PRESENTATIONS AT PROFESSIONAL MEETINGS Rader K. J., van Hullebusch, E., Carbonaro R. F., Farley K. J., Assessment of Time-Variable Solutions in the Unit World Model for Metals in Lakes. Poster. SETAC North America Annual Meeting Rader 6