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2023
Lazare, J., C. Stevens, AND E. Weber. A Multiple Linear Regression Approach for Kinetics of Hydrolysis: Carboxylic Acid Ester Substructure Compounds. ORISE Mini Symposium for National Postdoc Appreciation Week (NPAW), Athens, GA, September 19 - 20, 2023.
Lazare, J., C. Stevens, AND E. Weber. A multiple linear regression approach to the estimation of carboxylic acid ester and lactone alkaline hydrolysis rate constants. SAR AND QSAR IN ENVIRONMENTAL RESEARCH. Taylor & Francis, Inc., Philadelphia, PA, 34(3):183-210, (2023). https://doi.org/10.1080/1062936X.2023.2188608
Lazare, J., C. Stevens, AND E. Weber. Assessment and Development of Multiple Linear Regression Models for Kinetics of Hydrolysis: Carboxylic Acid Ester Substructure Compounds. ACS Fall 2023 Meeting, San Francisco, CA, August 13 - 17, 2023.
Edelman-Munoz, A., C. Stevens, L. Shields, I. Thillainadarajah, B. Meyer, E. Weber, R. Kolanczyk, AND A. Williams. The US-EPA Chemical Transformations Database (CHET): A novel web application for storage, presentation, and comparative analysis of chemical transformations. SERMACS, Durham, NC, October 25 - 28, 2023. https://doi.org/10.23645/epacomptox.24385642
Edelman-Munoz, A., C. Stevens, L. Shields, I. Thillainadarajah, B. Meyer, E. Weber, R. Kolanczyk, AND A. Williams. The US-EPA Chemical Transformations Database: A novel web application for storage, presentation, and comparative analysis of chemical transformations. ACS, San Francisco, CA, August 13 - 17, 2023. https://doi.org/10.23645/epacomptox.23957946
2022
Lazare, J., C. Stevens, AND E. Weber. A Multiple Linear Regression Approach for the Estimation of Carboxylic Acid Ester and Lactone Alkaline Hydrolysis Rate Constants. 2022 SETAC NA Annual Meeting, Pittsburgh, PA, November 13 - 17, 2022.
Weber, E., C. Stevens, J. Washington, AND R. Gladstone. Development of a PFAS reaction library: identifying plausible transformation pathways in environmental and biological systems. Environmental Science: Processes & Impacts. RSC Publishing, Cambridge, Uk, 24(5):689-753, (2022). https://doi.org/10.1039/d1em00445j
Evich, M., M. Davis, E. Weber, C. Stevens, B. Acrey, W. Henderson, S. Goodrow, E. Bergman, AND J. Washington. Environmental Fate of Cl-PFPECAs: Predicting the Formation of PFAS Transformation Products in New Jersey Soils. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 56(12):7779–7788, (2022). https://doi.org/10.1021/acs.est.1c06126
Evich, M., M. Davis, J. McCord, B. Acrey, J. Awkerman, D. Knappe, A. Lindstrom, T. Speth, C. Stevens, M. Strynar, Z. Wang, E. Weber, W. Henderson, AND J. Washington. Per- and polyfluoroalkyl substances in the environment. SCIENCE. American Association for the Advancement of Science (AAAS), Washington, DC, 375(6580):eabg9065, (2022). https://doi.org/10.1126/science.abg9065
2021
Stevens, C. AND E. Weber. Chemical Transformation Simulator (CTS): Predicting PFAS Metabolites and Environmental Transformation Products. EPA Tools & Resources Training Webinar, Virtual, October 07, 2021.
Stevens, C., R. Gladstone, J. Lazare, N. Pope, E. Weber, AND K. Wolfe. EPA’s Chemical Transformation Simulator: A Tool for Prediction of Metabolites and Environmental Transformation Products. 2021 ACS Fall Meeting, Atlanta, GA, August 22 - 26, 2021.
Yuan, C., C. Stevens, AND E. Weber. Prioritizing Direct Photolysis Products Predicted by the Chemical Transformation Simulator: Relative Reasoning and Absolute Ranking. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, , online, (2021). https://doi.org/10.1021/acs.est.0c08745
Card, M. AND C. Stevens. The development and use of the Chemical Transformation Simulator (CTS) for new and existing chemicals. BOSC Chemical Safety for Sustainability and Health and Environmental Risk Assessment Subcommittee Meeting, Virtual, November 04 - 05, 2021.
2020
Yuan, C., C. Stevens, AND E. Weber. Reaction Library to Predict Direct Photochemical Transformation Products of Environmental Organic Contaminants in Sunlit Aquatic Systems. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 54(12):7271–7279, (2020). https://doi.org/10.1021/acs.est.0c00484
2019
Yuan, C., C. Stevens, AND E. Weber. A reaction library for predicting direct phototransformation products of aquatic organic contaminants. 2019 ACS Spring National Meeting, Orlando, FL, March 31 - April 04, 2019.
Yuan, C., C. Stevens, AND E. Weber. Prediction of direct phototransformation products for aquatic organic contaminants: A reaction library approach. 29th International Conference on Photochemistry (ICP 2019), Boulder, CO, July 21 - 26, 2019.
Weber, E., C. Stevens, M. Koopmans, J. Olmstead, N. Pope, K. Wolfe, AND C. Yuan. User’s Guide for the Chemical Transformation Simulator (CTS), Version 1.0. U.S. EPA Office of Research and Development, Washington, DC, 2019.
2018
Leonard, J., C. Stevens, K. Mansouri, D. Chang, H. Pudukodu, S. Smith, AND C. Tan. A Workflow for Identifying Metabolically Active Chemicals to Complement in vitro Toxicity Screening. Computational Toxicology. Elsevier B.V., Amsterdam, Netherlands, 6:71-83, (2018).
Stevens, C., J. Patel, M. Koopmans, J. Olmstead, S. Hilal, N. Pope, E. Weber, AND K. Wolfe. Demonstration of a consensus approach for the calculation of physicochemical properties required for environmental fate assessments. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, 194:94-106, (2018). https://doi.org/10.1016/j.chemosphere.2017.11.137
Strope, C., K. Mansouri, H. Clewell, J. Rabinowitz, C. Stevens, AND J. Wambaugh. High-Throughput in-silico prediction of ionization equilibria for pharmacokinetic modeling. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, Netherlands, 615:150-160, (2018). https://doi.org/10.1016/j.scitotenv.2017.09.033
Leonard, J., H. El-Masri, C. Stevens, K. Mansouri, AND C. Tan. Integrating Exposure, Pharmacokinetics, And Dosimetry With In Vitro Dose-Response Data To Evaluate Chemical Risk. 2018 SOT Annual Meeting and ToxExpo, San Antonio, TX, March 11 - 15, 2018.
Yuan, C., C. Stevens, AND E. Weber. Predicting transformation products from the direct photolysis of organic compounds in aquatic systems. ACS Spring 2018 National Meeting, LA, New Orleans, March 18 - 22, 2018.
Barron, M., D. Vivian, AND C. Stevens. Relationships between aquatic toxicity, chemical hydrophobicity and mode of action: log kow QSARs revisited. SETAC Europe, Rome, N/A, ITALY, May 13 - 17, 2018.
Mill, T., J. Patel, AND C. Stevens. The Environmental Fate of Synthetic Organic Chemicals. Green Chemistry Education: Recent Developments. Walter de Gruyter GmbH, Berlin, Germany, , 67-96, (2018). https://doi.org/10.1515/9783110566499-004
2017
Leonard, J., D. Chang, H. El-Masri, S. Edwards, C. Stevens, K. Mansouri, P. Egeghy, AND C. Tan. A tiered approach for integrating exposure and dosimetry with in vitro dose-response data in the modern risk assessment paradigm. 254th ACS National Meeting & Exposition, Washington, DC, August 20 - 24, 2017.
Barber, Craig, K. Isaacs, AND C. Stevens. Developing and applying metamodels of high resolution process-based simulations for high throughput exposure assessment of organic chemicals in riverine ecosystems. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, Netherlands, 605606:471-481, (2017).
Washington, J., T. Jenkins, Jack Jones, C. Stevens, AND E. Weber. Efforts to estimate pesticide degradation rates in subsurface vadose and aquifer materials. Environmental Modeling Public Meeting, DC, Washington, June 28, 2017.
Patel, J., C. Stevens, AND E. Weber. Estimation of hydrolysis rate constants for carbamates. ACS 2017 Annual Spring Meeting, San Francisco, CA, April 02 - 06, 2017.
Leonard, J., C. Stevens, K. Mansouri, D. Chang, AND C. Tan. Identifying Metabolically Active Chemicals Using a Consensus Quantitative Structure Activity Model for Estrogen Receptor Binding. SOT Annual Meeting, Baltimore, MD, March 12 - 16, 2017.
Leonard, J., C. Stevens, K. Mansouri, D. Chang, AND C. Tan. Identifying Metabolically Active Chemicals Using a Consensus Quantitative Structure Activity Relationship Model for Estrogen Receptor Binding. Opentox USA 2017, Durham, NC, July 12 - 13, 2017.
Purucker, Tom, A. Ignatius, C. Kuan, S. Sinnathamy, D. Smith, AND C. Stevens. Landscape analysis of pesticide use patterns and ecological exposure. 2017 Ecological Society of America Annual Meeting, Portland, OR, August 06 - 11, 2017.
Stevens, C., J. Patel, Jack Jones, AND E. Weber. Prediction of Hydrolysis Products of Organic Chemicals under Environmental pH Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 51(9):5008–5016, (2017). https://doi.org/10.1021/acs.est.6b05412
2016
Wolfe, K., N. Pope, R. Parmar, M. Galvin, C. Stevens, E. Weber, J. Flaishans, AND Tom Purucker. Chemical Transformation System: Cloud Based Cheminformatic Services to Support Integrated Environmental Modeling. 8th International Congress on Environmental Modelling and Software, Toulouse, FRANCE, July 10 - 14, 2016.
Wolfe, K., N. Pope, R. Parmar, M. Galvin, C. Stevens, E. Weber, J. Flaishans, AND Tom Purucker. Chemical Transformation System: Cloud Based Cheminformatic Services to Support Integrated Environmental Modeling (proceedings). In Proceedings, iEMSs 2016, Toulouse, FRANCE, July 10 - 14, 2016. International Environmental Modelling and Software Society, Manno, Switzerland, 19, (2016).
Stevens, C., M. Card, J. Patel, AND E. Weber. Cheminformatics Applications and Physicochemical Property Calculators: A Powerful Combination for the Encoding of Process Science. Gordon Research Conference: Water, NH, Holderness, June 26 - July 01, 2016.
Stevens, C., M. Card, J. Patel, AND E. Weber. Cheminformatics and Computational Chemistry: A Powerful Combination for the Encoding of Process Science. 252nd American Chemical Society National Meeting, Philadelphia, PA, August 21 - 25, 2016.
2015
Card, M., C. Stevens, AND E. Weber. Assessing the accuracy of software predictions of mammalian and microbial metabolites. 250th American Chemical Society National Meeting & Exposition, Boston, MA, August 16 - 20, 2015.
Stevens, C. Chemical Transformation Simulator. Interagency Steering Committee on Multimedia Environmental Models (ISCMEM), Davis, CA, October 27 - 29, 2015.
2014
Whelan, G., E. Weber, C. Stevens, M. Pelton, K. Wolfe, R. Parmar, M. Galvin, S. Hilal, AND J. Babendreier. A Chemical Properties Simulator to Support Integrated Environmental Modeling. Presented at th International Congress on Environmental Modelling and Software (iEMSs), San Diego, CA, June 15 - 19, 2014.
Whelan, G., E. Weber, C. Stevens, M. Pelton, K. Wolfe, R. Parmar, M. Galvin, S. Hilal, AND J. Babendreier. A Chemical Properties Simulator to Support Integrated Environmental Modeling (proceeding). In Proceedings, 7th International Congress on Environmental Modelling and Software (iEMSs), San Diego, CA, June 15 - 19, 2014. International Environmental Modelling and Software Society, Manno, Switzerland, 1229-1235, (2014).
Strope, C., K. Mansouri, J. Kancherla, C. Stevens, AND J. Wambaugh. High Throughput pharmacokinetic modeling using computationally predicted parameter values: dissociation constants (TDS). Presented at ToxCast Data Summit, Research Triangle Park, NC, September 29 - 30, 2014. https://doi.org/10.23645/epacomptox.5197147
Barber, Craig, Kate Sullivan, AND C. Stevens. Integrated modeling systems to assess exposure and toxicity of chemicals in support of aquatic ecological risk assessment of methodologically challenging chemicals. Presented at International Society of Exposure Science 24th Annual Meeting, Cincinnai, OH, October 12 - 16, 2014.
Stevens, C. Use of the Chemical Transformation Simulator as a Parameterization Tool for Modeling the Environmental Fate of Organic Chemicals and their Transformation Products. Presented at 2014 Annual Public Meeting of the Inter agency Steering Committee on Multimedia Environmental Modeling (ISCMEM), Baltimore, MD, October 21 - 22, 2014.
2013
Molina, M., G. Whelan, C. Fitzgerald, AND C. Stevens. Aged Manures as Sources of Pathogens in Agricultural Runoff. Presented at American Society for Microbiology, Denver, CO, May 18 - 21, 2013.
2011
Endale, D. M., D. S. Fisher, L. B. Owens, M. B. Jenkins, H. H. Schomberg, C. T. STEVENS, AND J. V. Bonta. Runoff Water Quality During Drought in a Zero-Order Georgia Piedmont Pasture: Nitrogen and Total Organic Carbon. JOURNAL OF ENVIRONMENTAL QUALITY. American Society of Agronomy, MADISON, WI, 40(3):969-979, (2011).
2009
STEVENS, C. T. AND R. G. ZEPP. ERD Research on Nutrient and Pathogen Dynamics. Presented at EPA/USGS Mercury in Streams Ecosystems Meeting, Athens, GA, March 17 - 19, 2009.
2007
SCHROER, K., D. M. ENDALE, C. T. STEVENS, J. W. WASHINGTON, AND V. NZENGUNG. CONCENTRATIONS AND ESTIMATED LOADS OF NITROGEN CONTRIBUTED BY TWO ADJACENT WETLAND STREAMS WITH DIFFERENT FLOW-SOURCE TERMS IN WATKINSVILLE, GA. In Proceedings, Georgia Water Resources Conference, Athens, GA, March 27 - 29, 2007. Georgia Institute of Technology, Atlanta, GA, 1-4, (2007).
SCHROER, K., D. M. ENDALE, C. T. STEVENS, J. W. WASHINGTON, AND V. NZENGUNG. CONCENTRATIONS AND ESTIMATED LOADS OF NITROGEN CONTRIBUTED BY TWO ADJACENT WETLAND STREAMS WITH DIFFERENT FLOW-SOURCE TERMS IN WATKINSVILLE, GEORGIA. Presented at Georgia Water Resources Conference, Athens, GA, March 27 - 29, 2007.
MAZUR, C. S., J. F. KENNEKE, C. T. STEVENS, M. S. OKINO, AND J. C. LIPSCOMB. IN VITRO METABOLISM OF THE FUNGICIDE AND ENVIRONMENTAL CONTAMINANT TRANS-BROMUCONAZOLE AND IMPLICATIONS FOR RISK ASSESSMENT. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH - PART A: CURRENT ISSUES. Taylor & Francis, Inc., Philadelphia, PA, 70(14):1241-1250, (2007).
CYGAN, R. T., C. T. STEVENS, R. PULS, S. B. YABUSAKI, R. D. WAUCHOPE, C. J. MCGRATH, G. P. CURTIS, M. D. SIEGEL, L. A. VEBLEN, AND D. R. TURNER. RESEARCH ACTIVITIES AT U.S. GOVERNMENT AGENCIES IN SUBSURFACE REACTIVE TRANSPORT MODELING. Vadose Zone Journal. Soil Science Society of America, Madison, WI, 6(4):805-822, (2007).
2005
COLLETTE, T. W., D. COLON, S. H. HILAL, W. J. JONES, J. F. KENNEKE, C. S. MAZUR, C. T. STEVENS, P. WINGET, K. L. WOLFE, AND E. J. WEBER. Development of Environmental Fate and Metabolic Simulators. Presented at Bioinformatics Open Source Conference (BOSC), Detroit, MI, June 23 - 24, 2005.
2004
TebesStevens, C L. AND W J. Jones. ESTIMATION OF MICROBIAL REDUCTIVE TRANSFORMATION RATES FOR CHLORINATED BENZENES AND PHENOLS USING A QUANTITATIVE STRUCTURE-ACTIVITY RELATIONSHIP APPROACH. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 23(7):1600-1609, (2004).
2003
Jones, W J., C S. Mazur, AND C L. TebesStevens. H2 CONSUMPTION DURING THE MICROBIAL REDUCTIVE DEHALOGENATION OF CHLORINATED PHENOLS AND TETRACHLOROETHENE. BIODEGRADATION 14(4):285-295, (2003).
Weber, E J., T W. Collette, W J. Jones, J F. Kenneke, C S. Mazur, L A. Suarez, C T. Stevens, J W. Washington, K Wolfe, N L. Wolfe, G W. Bailey, AND R S. Parmar. MODELING CHEMICAL FATE AND METABOLISM FOR COMPUTATIONAL TOXICOLOGY. Presented at Science Forum 2003, Washington, DC, May 5-7, 2003.
2002
Weaver, J W. AND C L. TebesStevens. UNCERTAINTY IN MODEL PREDICTIONS-PLAUSIBLE OUTCOMES FROM ESTIMATES OF INPUT RANGES. Presented at Brownfields 2002, Charlotte, NC, November 13-15, 2002.
Weaver, J W., C L. TebesStevens, AND K Wolfe. UNCERTAINTY IN MODEL PREDICTIONS-PLAUSIBLE OUTCOMES FROM ESTIMATES OF INPUT RANGES. Presented at Brownfields 2002, Charlotte, NC, November 13-15, 2002.
2001
TebesStevens, C L., F. Espinoza, AND A. J. Valocchi. EVALUATING THE SENSITIVITY OF A SUBSURFACE MULTICOMPONENT REACTIVE TRANSPORT MODEL WITH RESPECT TO TRANSPORT AND REACTION PARAMETERS. JOURNAL OF CONTAMINANT HYDROLOGY 52(1-4):3-27, (2001).
2000
Simon, R., D Colon, C L. TebesStevens, AND E J. Weber. EFFECT OF REDOX ZONATION ON THE REDUCTIVE TRANSFORMATION OF P-CYANONITROBENZENE IN A LABORATORY SEDIMENT COLUMN. ENVIRONMENTAL SCIENCE & TECHNOLOGY 34(17):3617-3622, (2000).
TebesStevens, C L. AND W J. Jones. QSAR ANALYSIS OF SORPTION-CORRECTED RATE CONSTANTS FOR REDUCTIVE BIOTRANSFORMATION OF HALOGENATED AROMATICS. Presented at 220th American Chemical Society National Meeting, Washington, DC, August 20-24, 2000.
1999
Simon, R., D. COLON, C. T. STEVENS, AND E. J. WEBER. Impact of Redox Zonation on the Reductive Transformation of Nitrocompounds in a Laboratory Sediment Column. Presented at 29th International Symposium on Environmental Analytical Chemistry, Jekyll Island, GA, May 23 - 27, 1999.