KOSLOSKI PROPERTY CRITICAL AREA ASSESSMENT

Plateau Geoscience Group conducted a Geologic Hazard Assessment of the Kosloski property, located north of Pacific Way near Longview, Washington, on the south-facing slope of the Willapa Hills. The Geologic Hazard Assessment was in support of timber harvest and land development permits. The property is underlain by the Cowlitz Formation and Columbia River Basalt Formation, and is in the eastern portion of an identified large dormant deep-seated landslide. The property owner proposed building sites for construction of nine single-family residences , and timber harvesting associated with residential development. The assessment evaluated geologic conditions in the areas of proposed residential development and provided recommendations regarding development setbacks, design standards, and feasibility of the potential development with respect to identified landslides and landslide features.