• HANFORD 200-AREA (USDOE), BENTON County, WA

Stage of Clean-up: Construction Underway

Conditions at proposal (June 24, 1988): The Hanford 200-Area is in the middle of the 570-square-mile Hanford Site approximately 20 miles north of the City of Richland, Benton County, Washington. Since 1943, Hanford has been the scene of Federal nuclear activities, primarily production of nuclear materials for national defense. The U.S. Department of Energy (USDOE) uses the 200-Area for nuclear fuel reprocessing, finishing, and waste management. Over 230 waste disposal locations have been identified in the 200-Area. The disposal locations and plumes of contaminated ground water cover approximately 215 square miles. An estimated 1 billion cubic yards of solid and dilute liquid wastes comprised of radioactive, mixed, and hazardous constituents were disposed of in trenches, ditches, and landfills in the 200-Area. USDOE has detected TRITIUM, iodine-129, URANIUM+, CYANIDE, and CARBON TETRACHLORIDE at levels significantly above background in ground water beneath the area. Over 2,500 people obtain drinking water from wells within 3 miles of the 200-Area.  More...

Sources of Contamination:

• Lagoon disposal
• Landfill
• Underground injection
• Waste tank - above ground
• Waste tank - below ground

Contaminants Detected
	Ground Water	Surface Water	Air	Soil	Other
CARBON TETRACHLORIDE	X
CYANIDE COMPOUNDS	X
IODINE	X	X
PLUTONIUM 239	X	X
PU-240	X	X
SODIUM CHROMATE	X	X
TRITIUM	X	X
URANIUM	X	X

Groundwater and Drinking Water
Were drinking water wells shut down due to contamination?	Yes
Population served by the wells now shut down:	101 - 500
Are drinking water wells potentially threatened?	No
Aquifer discharges into:	A drinking water aquifer
	A sensitive ecological environment
	Surface water
Population served by water wells in the aquifer:	101 - 500

List ground water uses.

EPA Hazard Ranking System scores for HANFORD 200-AREA (USDOE):

Less Hazard

National Average

More Hazard

0%					50%					100%

Overall site:

Surface water migration:

Ground water migration:

Rank Superfund sites in the U.S., WASHINGTON, or in BENTON County by EPA Hazard Ranking Scores.

*Note: EPA's Hazard Ranking System is designed to screen and prioritize sites for the Superfund program, based on limited data available at time of listing. These scores are not based on a comprehensive risk assessment of the site and do not reflect conditions after initiation of cleanup work.

Number of PRPs currently associated with this site:	0
Number of owners/operators which are also municipalities:	0

EPA Site Information

• NPL Fact Sheet
• Record of Decision (ROD) Abstracts
• NPL Site 5 Year Reviews
• Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS) Hazardous Waste Site Information
• Superfund Hazardous Waste Site Advanced Query Form

Scorecard reports for BENTON County on:

• Potential Sources of Land Contamination
• Criteria Air Pollutants
• Hazardous Air Pollutants