• ARMY CREEK LANDFILL, NEW CASTLE County, DE

Stage of Clean-up: Construction Completed

Conditions at listing (October 1981): The Army Creek Landfill covers 47 acres in New Castle County, Delaware. It is adjacent to the Delaware Sand & Gravel Landfill and was owned and operated by the county as a municipal and hazardous waste disposal facility until it reached capacity in 1970. The site holds 1.9 million cubic yards of refuse. Since 1972, the county has spent $3 million to control the migration of contaminants, including LEAD, CHROMIUM, ARSENIC, and a variety of organic compounds, to an aquifer that supplies water to over 100,000 people. This site was first listed under the name "Delaware Sand & Gravel -Llangollen Army Creek Landfills." Status (July 1983): The State is drafting a National Pollutant Discharge Elimination System permit for the discharge of the ground water to Army Creek. EPA recently completed a Remedial Action Master Plan outlining the investigations needed to determine the full extent of cleanup required at the site. It will guide further actions at the site.

Sources of Contamination:

• Landfill

Volatile organic compounds (VOCS, e.g., BENZENE, METHYLENE CHLORIDE, and bis 2-CHLOROETHYL ETHER) and inorganic chemicals (e.g., CADMIUM, CHROMIUM, MERCURY and NICKEL), are found in ground water underlying and down gradient of the site. Ground water recovery wells are operational and successfully preventing potential for exposure. The surface water of Army Creek contains CADMIUM, CHROMIUM, MERCURY and ZINC at levels which may be harmful to aquatic life.

Contaminants Detected
	Ground Water	Surface Water	Air	Soil	Other
BARIUM	X	X
BIS(2-CHLOROETHYL) ETHER			X
CADMIUM	X	X
CHROMIUM	X	X
CHROMIUM COMPOUNDS	X	X
LEAD	X	X
VOLATILE ORGANIC COMPOUNDS			X

Groundwater and Drinking Water
Were drinking water wells shut down due to contamination?	No
Are drinking water wells potentially threatened?	No

List ground water uses.

EPA Hazard Ranking System scores for ARMY CREEK LANDFILL:

Less Hazard

National Average

More Hazard

0%					50%					100%

Overall site:

Surface water migration:

Ground water migration:

Air migration:

Rank Superfund sites in the U.S., DELAWARE, or in NEW CASTLE 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:	31
Hazardous waste received from off-site generators/transporters?	Yes
Number of past and present PRPs who contributed less than 1% of the waste:	0
Number of owners/operators which are also municipalities:	1

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 NEW CASTLE County on:

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