Sample Name: K4-6-8

Sample date: April 17, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 6-8ft
Location Description: Sediment

Contaminants above Illinois EPA soil background level  :

• Aluminum
• Arsenic
• Barium
• Beryllium
• Cadmium
• Chromium
• Copper
• Iron
• Lead
• Mercury
• Selenium
• Silver
• Thallium
• Vanadium
• Zinc

Latitude: +41.3164968      Longitude: -89.3124699

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	17,200 mg/kg
Antimony	3.3 mg/kg	NT mg/kg
Arsenic	11.3 mg/kg	17 mg/kg
Barium	122 mg/kg	562 mg/kg
Beryllium	0.56 mg/kg	0.95 mg/kg
Cadmium	0.5 mg/kg	22 mg/kg
Calcium	5525 mg/kg	17,400 mg/kg
Chromium	13 mg/kg	52 mg/kg
Cobalt	8.9 mg/kg	12 mg/kg
Copper	12 mg/kg	74 mg/kg
Iron	15000 mg/kg	28,200 mg/kg
Lead	20.9 mg/kg	148 mg/kg
Magnesium	2700 mg/kg	8,050 mg/kg
Manganese	630 mg/kg	559 mg/kg
Mercury	0.5 mg/kg	0.62 mg/kg
Nickel	13 mg/kg	34 mg/kg
Potassium	1100 mg/kg	2,210 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	0.94 mg/kg
Silver	0.5 mg/kg	1 mg/kg
Sodium	130 mg/kg	<887 mg/kg
Thallium	0.42 mg/kg	0.51 mg/kg
Vanadium	25 mg/kg	33 mg/kg
Zinc	60.2 mg/kg	1,860 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.