Sample Name: N.5-1-8-10

Sample date: April 16, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 8-10 feet
Location Description: Chemistry Core

Contaminants above Illinois EPA soil background level  :

• Copper

Latitude: +41.3217469      Longitude: -89.3047432

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	6280 mg/kg
Antimony	3.3 mg/kg	<10 mg/kg
Arsenic	11.3 mg/kg	2.7 mg/kg
Barium	122 mg/kg	65 mg/kg
Beryllium	0.56 mg/kg	0.41 mg/kg
Cadmium	0.5 mg/kg	0.38 mg/kg
Calcium	5525 mg/kg	57400 mg/kg
Chromium	13 mg/kg	12 mg/kg
Cobalt	8.9 mg/kg	7.8 mg/kg
Copper	12 mg/kg	15 mg/kg
Iron	15000 mg/kg	10500 mg/kg
Lead	20.9 mg/kg	8.6 mg/kg
Magnesium	2700 mg/kg	22000 mg/kg
Manganese	630 mg/kg	272 mg/kg
Mercury	0.5 mg/kg	<0.17 mg/kg
Nickel	13 mg/kg	18 mg/kg
Potassium	1100 mg/kg	882 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	<5.8 mg/kg
Silver	0.5 mg/kg	<1.7 mg/kg
Sodium	130 mg/kg	<882 mg/kg
Thallium	0.42 mg/kg	<4.2 mg/kg
Vanadium	25 mg/kg	19 mg/kg
Zinc	60.2 mg/kg	42 mg/kg

Notes: A value of NT indicates that this sample was not tested for a particular contaminant. A value of ND indicates that the contaminant was not detected in the test that was done for it.