Sample Intake and Project Tracking: Receive environmental samples submitted by internal and external clients. Verify sample IDs, chain-of-custody forms, preservation requirements, holding times, and sample integrity. Enter project information into laboratory tracking databases and communicate any discrepancies to laboratory management. 15%
Sample Preparation and Laboratory Analysis: Perform routine sample preparation procedures including drying, grinding, weighing, filtration, digestion, extraction, and preservation according to established SOPs and EPA-approved methods. Assist with the preparation of environmental samples including water, sediment, soil, plant, and biological materials. 30%
Instrument Operation: Operate routine analytical instrumentation following training and established SOPs, including elemental analyzers (CHN), ICP-OES, TOC analyzers, Seal nutrient analyzers (AA500), and other laboratory equipment. Perform routine calibrations and daily startup/shutdown procedures. 30%
Data Management and Quality Control Documentation: Maintain accurate laboratory records and perform data entry into electronic databases and Excel spreadsheets. Assist with quality assurance and quality control documentation, including calibration logs, laboratory control samples, duplicates, blanks, and standard recoveries. Prepare preliminary data summaries for review by senior laboratory staff. 15%
Laboratory Maintenance: Prepare stock solutions, calibration standards, and quality control materials. 5%
Other duties as assigned. 5%