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Bray, C., M. Strum, H. Simon, L. Riddick, M. Kosusko, M. Menetrez, M. Hays, AND V. Rao. An assessment of important SPECIATE profiles in the EPA emissions modeling platform and current data gaps. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 207:93-104, (2019). https://doi.org/10.1016/j.atmosenv.2019.03.013

Bray, C., M. Strum, L. Riddick, M. Menetrez, M. Kosusko, M. Hays, AND V. Rao. Assessment of important SPECIATE profiles in EPA’s emissions modeling platform. Air and Waste Management Association 112th Annual Conference and Exhibition, Quebec City, CANADA, June 25 - 28, 2019.

Simon, H., C. Bray, M. Strum, L. Riddick, M. Menetrez, M. Kosusko, M. Hays, AND V. Rao. Assessment of important SPECIATE profiles in EPA’s emissions modeling platform and current data needs. 2018 AGU Fall Meeting, Washington, DC, December 10 - 14, 2018.

Berg, C., L. Riddick, S. Griffin, AND J. Quackenboss. Community-Focused Exposure and Risk Screening Tool (C-FERST): Introduction and Demonstration. U.S. Environmental Protection Agency, Washington, DC, EPA/600/S-18/001, 2018.

Berg, C., L. Riddick, L. Stewart, J. Quackenboss, B. Connor, AND N. Oschman. Introduction to Community-Focused Exposure and Risk Screening Tool (C-FERST). C-FERST Training Demo, RTP, NC, July 06, 2017 - July 06, 2018.

Bray, C., M. Strum, H. Simon, L. Riddick, Mike Kosusko, AND V. Rao. Assessment of Important SPECIATE Profiles in EPA’s Emissions Modeling Platform and Current Data Gaps. US EPA 2017 International Emissions Inventory Conference, Baltimore, MD, August 14 - 18, 2017.

Bray, C., M. Strum, H. Simon, L. Riddick, Mike Kosusko, AND V. Rao. Assessment of important SPECIATE Profiles in EPA’s Emissions Modeling Platform and Current Data Gaps (US EPA 2017 International Emissions Inventory Conference). 36th AAAR Annual Conference, Raleigh, NC, October 16 - 20, 2017.

Riddick, L. Community-Focused Exposure and Risk Screening Tool (C-FERST). Joint Meeting of the Environmental Research Institute of the States and U.S. EPA ORD, Ada, OK, July 11 - 12, 2017.

MOMPLAISIR, G., C. G. ROSAL, E. M. HEITHMAR, K. E. VARNER, L. A. RIDDICK, D. F. BRADFORD, AND N. G. TALLENT-HALSELL. Development of a Solid Phase Extraction Method for Agricultural Pesticides in Large-Volume Water Samples. Journal of Separation Science. Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany, 81:1380-1386, (2010).

BRADFORD, D. F., E. M. HEITHMAR, N. G. TALLENT-HALSELL, G. MOMPLAISIR, C. G. ROSAL, K. E. VARNER, M. S. NASH, AND L. A. RIDDICK. Temporal Patterns and Sources of Atmospherically Deposited Pesticides in Alpine Lakes of the Sierra Nevada, California , USA. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 44(10):4609-4614, (2010).

SCHUMACHER, B. A., J. H. ZIMMERMAN, C. R. SIBERT, K. E. VARNER, AND L. A. RIDDICK. Macro- and Micro-Purge Soil Gas Sampling Methods for the Collection of Contaminated Vapors. Presented at National Forum on Vapor Intrusion, Philadelphia, PA, January 12 - 13, 2009.

BRADFORD, D. F., N. G. TALLENT-HALSELL, E. M. HEITHMAR, G. MOMPLAISIR, C. G. ROSAL, M. S. NASH, K. E. VARNER, AND L. A. RIDDICK. Temporal and Spatial Patterns of Airborne Contaminants Relative to Amphibian Population in Sequoia and Kings Canyon National Parks, California. Presented at Sierra Nevada - Southern Cascades Contaminants Workshop, Three Rivers, CA, April 08 - 09, 2009.

SCHUMACHER, B. A., J. H. ZIMMERMAN, C. R. SIBERT, K. E. VARNER, AND L. A. RIDDICK. MACRO- MICRO-PURGE SOIL GAS SAMPLING METHODS FOR THE COLLECTION OF CONTAMINANT VAPORS. GROUNDWATER MONITORING AND REMEDIATION. National Ground Water Association, Westerville, OH, 29(1):138-143, (2009).

BRADFORD, D. F., E. M. HEITHMAR, N. G. TALLENT-HALSELL, G. MOMPLAISIR, C. G. ROSAL, K. E. VARNER, L. A. RIDDICK, AND M. S. NASH. Temporal Patterns of Airborne Pesticides in Alpine Lakes of the Sierra Nevada, California. Presented at Society for Environmental Toxicology and Chemistry, Tampa, FL, November 16 - 20, 2008.

BRADFORD, D. F., E. M. HEITHMAR, L. MCCONNELL, G. MOMPLAISIR, L. A. RIDDICK, C. G. ROSAL, S. SIMONICH, D. SPARLING, K. STANLEY, N. G. TALLENT-HALSELL, AND K. E. VARNER. AIRBORNE PESTICIDES AND POPULATION DECLINES OF A CALIFORNIA ALPINE FROG. Presented at Environmental Biology Seminar, Las Vegas, NV, February 14, 2007.

BRADFORD, D. F., E. M. HEITHMAR, K. STANLEY, L. MCCONNELL, D. SPARLING, S. SIMONICH, N. G. TALLENT-HALSELL, G. MOMPLAISIR, C. G. ROSAL, L. A. RIDDICK, AND K. E. VARNER. TEMPORAL AND SPATIAL PATTERNS OF AIRBORNE PESTICIDES IN THE ALPINE ENVIRONMENT OF A DECLINING CALIFORNIA AMPHIBIAN, THE MOUNTAIN YELLOW-LEGGED FROG. Presented at Understanding Agriculture's Effects on Amphibians and Reptiles in a Changing World, St. Louis, MO, February 06 - 08, 2007.

BRADFORD, D. F., E. M. HEITHMAR, N. G. TALLENT-HALSELL, G. MOMPLAISIR, C. G. ROSAL, L. A. RIDDICK, AND K. E. VARNER. TEMPORAL PATTERNS OF AIRBORNE PESTICIDES IN THE HABITATE OF THE MOUNTAIN YELLOW-LEGGED FROG IN THE SOUTHERN SIERRA NEVADA. Presented at Annual Meeting of California-Nevada Amphibian Populations Task Force, Las Vegas, NV, January 18 - 20, 2007.

Betowski, L D., M. Enlow, L A. Riddick, AND D. H. Aue. CALCULATION OF ELECTRON AFFINITIES OF POLYCYCLIC AROMATIC HYDROCARBONS AND SOVATION ENERGIES OF THEIR ANIONS. JOURNAL OF PHYSICAL CHEMISTRY A. American Chemical Society, Washington, DC, 110(47):12927-12946, (2006).

Gentry, E. L., L A. Riddick, AND W C. Brumley. EVALUATION OF N-METHYL-N-TERT-BUTYLDIMETHYLSILYLTRIFLUOROACETAMIDE FOR ENVIRONMENTAL ANALYSIS UNDER BOTH EIMS AND ELECTRON CAPTURE NICIMS CONDITIONS AND COMPARISON TO TRIMETHYLSILYL REAGENTS UNDER EIMS. JOURNAL OF CHROMATOGRAPHY A 86(5):299-312, (2006).

BRADFORD, D. F., E. M. HEITHMAR, G. MOMPLAISIR, C. G. ROSAL, N. G. TALLENT-HALSELL, L. A. RIDDICK, AND K. E. VARNER. TEMPORAL VARIATION IN PESTICIDE LEVELS IN SURFACE WATERS OF THE SOUTHERN NEVADA, CALIFORNIA. Presented at Workshop: Knowledge, Uncertainties and Research Needs in Evaluationg the Role of Pesticides in Amphibian Population Declines in California and Globally, Society for Conservation Biology, San Jose, CA, June 24, 2006.

Rosal, C G., L A. Riddick, E M. Heithmar, G M. Momplaisir, K E. Varner, P. L. Ferguson, D F. Bradford, AND N G. TallentHalsell. ANALYSIS OF LOW-LEVEL PESTICIDES FROM HIGH-ELEVATION LAKE WATERS BY LARGE VOLUME INJECTION GCMS. Presented at Pittsburg Conference 2003, Orlando, FL, March 13, 2003.

Rosal, C G., L A. Riddick, E M. Heithmar, G M. Momplaisir, K E. Varner, P. L. Ferguson, D F. Bradford, AND N G. TallentHalsell. ANALYSIS OF LOW-LEVEL PESTICIDES FROM HIGH-ELEVATION LAKE WATERS BY LARGE-VOLUME INJECTION GCMS. Presented at Pittsburgh Confernece on Anlytical Chemistry and Applied Spectroscopy 2003, Orlando, FL, March 9-14, 2003.

Momplaisir, G M., K E. Varner, E M. Heithmar, C G. Rosal, L A. Riddick, P. L. Ferguson, B. Gentry, D F. Bradford, AND N G. TallentHalsell. DETERMINATION OF ULTRATRACE CONCENTRATIONS OF AGRICULTURAL PESTICIDES IN WATER USING SOLID-PHASE EXTRACTION AND ANALYSIS BY GC/MS. Presented at Pittsburgh Conference on Analytical Chemistry and Applied Spectrometry, Orlando, FL, March 9-14, 2003.

Rosal, C G., L A. Riddick, G M. Momplaisir, E M. Heithmar, AND K E. Varner. PULSED SPLITLESS AND LARGE-VOLUME INJECTION IN CAPILLARY GAS CHROMATOGRAPHY MASS SPECTROMETRY FOR THE DETERMINATION OF ULTRA-TRACE LEVEL PESTICIDE RESIDUES. Presented at National Environmental Monitoring Conference 2003, Arlington, VA, July 21-24, 2003.

Varner, K E., G M. Momplaisir, N G. TallentHalsell, D F. Bradford, P. L. Ferguson, L A. Riddick, C G. Rosal, AND E M. Heithmar. THE CHALLENGE OF ACQUIRING ALPINE LARGE VOLUME LAKE WATER SAMPLES FOR ULTRA TRACE LEVEL ANALYSIS. Presented at On-Site 11th International Conference, Phoenix, AZ, January 21-24, 2003.