Your property may require a geotechnical or soils report.
A geotechnical or soils report (OSSC Section 1803.6) from a geotechnical engineer licensed in Oregon may be required for some properties. More information about that process is available online.
A geotechnical report helps determine if the soil on your construction site is capable of supporting the proposed structure. Reports will provide a description of the site conditions and geological data, as well as provide appropriate recommendations for site preparation, drainage control, and any conditions that might affect the project.