The incumbent works under the supervision of the Research Scientist Supervisor I (RSS I) Chemical Sciences (CS), Chief of the Pb & Inorganic Testing Unit. The Research Scientist I (RS I) (CS) plans, organizes, and carries out scientific research studies of limited scope and complexity related to source identification and quantitative assessment of human exposure to toxic metals, primarily lead, in support of the California Department of Public Health (CDPH) Childhood Lead Poisoning Prevention Program. The RS I develops methods and performs chemical analyses to identify the concentration of lead in environmental and biological samples; prepares samples, standards, and reagents; interprets and reports laboratory sample results; and documents quality assurance. In addition, the RS I utiliz