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Mr. John Brown is a Managing Scientist in Exponent's Environmental Sciences practice. He is responsible for overall program management and the technical supervision of environmental monitoring analytical chemistry and environmental forensics projects. Mr. Brown has over 22 years of experience in the design conduct and synthesis of marine environmental monitoring programs. He has developed new analytical and interpretative techniques for the chemical fingerprinting and allocation of hydrocarbon contamination in the environment. Mr. Brown has developed analytical and field techniques for a wide variety of matrices including sediments water air crude oil and refined petroleum products oilfield production water drilling fluids animal tissues and semi-permeable membrane devices (SPMDs). The chemical analyses of these matrices have included trace-level and forensic determinations of saturated and aromatic hydrocarbons heterocyclic compounds biomarkers (steranes and triterpanes) polychlorinated biphenyls (PCBs) chlorinated pesticides and sterols. | 