Segment 1 at a Glance

 SEGMENT 1 HISTORY

Segment 1 is part of the larger 100-F/IU-2/IU-6 decision area within the River Corridor. Segment 1 does not contain any historical reactor or operational areas. In contrast to reactor and operational areas, the 100-F/IU-2/IU-6 decision area segments consist primarily of areas of no known Hanford Site-related or Manhattan Project-defined hazardous or radiological operational areas, where past operations occurred, with the exception of several military anti-aircraft batteries and encampments. No documented or organized waste burial practices, minimal below-grade engineered systems and underground piping, or liquid disposal areas (such as ponds and retention basins) exist in this decision unit.

Historical activities that typically occurred within Segment 1 before 1943 (pre-Hanford), were limited to homestead and farming activities, mostly along the Columbia River west of the 100-B/C Area. Farmstead communities existed from 1880 to 1943, and their locations within the River Corridor are identified through historic and more recent aerial photographs (1941, 1948, and 2002), real estate records, historic documents, personal interviews, and field walkdowns. Pre-Hanford and Hanford-era railroad lines are also present within Segment 1 along with two, military, anti-aircraft gun sites that operated as part of the Hanford air defense system from 1950 to early 1958.

The archaeological record of Native American occupation of the Hanford Site stretches back thousands of years.  Typical archaeological sites include pit house villages, open campsites, fishing sites, hunting/kill sites, game drive complexes, quarries, and spirit quest sites.