Environmental Field Surveys

Mid to late 2008

The Columbia River Crossing project team is performing initial archaeological surveys using ground penetrating radar (GPR). GPR is a non-invasive technique using pulses of radar that are emitted from equipment as it is rolled along the ground. This technique helps identify underground voids or other soil inconsistencies. Voids or other inconsistencies in soil profiles may indicate the presence of archaeological artifacts, unmarked grave locations, geological hazards, utilities, etc. GPR also provides detailed information on soils and geology. This information will help archaeologists identify excavation locations to determine if underground archaeological resources are actually present.

The project team is performing GPR surveys throughout the project area, concentrating on land adjacent to the I-5 corridor, the Fort Vancouver National Historic Reserve, and the Providence Academy. This survey will be followed by the collection of geo-core samples to further investigate the possibility of archaeological resources at potential future drilling locations along I-5, and to further refine information about soil layers and composition.

Right-of-entry permits are obtained from all private property owners before current and future investigations can take place on any non-government owned land. Additionally, all property owners are notified 48 hours in advance of work that is to occur on their property.

If you have any questions, suggestions, or concerns, please call Heather Gundersen, CRC Environmental Manager at (360) 737-2726 or (503) 256-2726.