Offeror Responsibilities: a. Provide a work plan determining limited, strategic locations for new MW installations targeting those limited, incomplete, or no existing data areas using prior well-monitoring data points and studies conducted within the plume. The work plan will describe new well installation and sample collection procedures and rationale for well-installation and receive approval from ADEC CSP prior to installation. b. Analyze water and soil samples to determine concentrations of 21 PFASs to include the six UCMR3/4 related contaminants. Soil data will be analyzed for the purpose of determining soil conditions and lithology. c. Provide a source soil profile and calculated ground gradient to determine plume characterization and describe and/or map in the final report.