OSERAN PROPERTY

Plateau Geoscience Group provided field and documentation support for a site investigation and source control evaluation report for the Oseran Property, located at 2245 and 2258 NW Suffolk Street, in Portland, Oregon. Field tasks included logging soil borings, collection of soil samples, installation of shallow groundwater monitoring wells, and groundwater monitoring. Plateau evaluated soil and groundwater logging and sample data to provide interpretation of stratigraphy and water-bearing zones present beneath the site. In addition, Plateau modeled potential migration of contaminants that were detected in shallow groundwater to the Willamette River using the 2-D program Biochlor. Site-specific data and regional appropriate groundwater parameters were used to model migration of contaminants from three onsite shallow monitoring wells. The site is currently under consideration for a No Further Action by Oregon Department of Environmental Quality.