Sample Name: SP7-SD1

Sample date: October 9, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 0 - 6 in
Location Description: DePue Lake Shoreline Seep Sediment

Contaminants above Illinois EPA soil background level  :

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

Latitude: +41.3220922      Longitude: -89.30353

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	6890 mg/kg
Antimony	3.3 mg/kg	<11 mg/kg
Arsenic	11.3 mg/kg	46 mg/kg
Barium	122 mg/kg	1090 mg/kg
Beryllium	0.56 mg/kg	0.6 mg/kg
Cadmium	0.5 mg/kg	140 mg/kg
Calcium	5525 mg/kg	61000 mg/kg
Chromium	13 mg/kg	18 mg/kg
Cobalt	8.9 mg/kg	13 mg/kg
Copper	12 mg/kg	167 mg/kg
Iron	15000 mg/kg	32400 mg/kg
Lead	20.9 mg/kg	711 mg/kg
Magnesium	2700 mg/kg	4870 mg/kg
Manganese	630 mg/kg	878 mg/kg
Mercury	0.5 mg/kg	2 mg/kg
Nickel	13 mg/kg	21 mg/kg
Potassium	1100 mg/kg	664 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	3.9 mg/kg
Silver	0.5 mg/kg	2.4 mg/kg
Sodium	130 mg/kg	<946 mg/kg
Thallium	0.42 mg/kg	2.7 mg/kg
Vanadium	25 mg/kg	20 mg/kg
Zinc	60.2 mg/kg	8750 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.