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April 14, 2004 Lab ID STK431922-03 <br /> Customer ID: 3-11146 <br /> Valley Industries Description : Machine Shop Floor Sweep <br /> Sample Results - Inorganic <br /> Sample Preparation Sample Analysis <br /> Constituent Results PQL Units Note Method Date/ID Method Date/ID <br /> Metals, Total G:1 <br /> Chromium 882 14 mg/kg 3050E 03/24/04:A209 6010B 03/24/2004 <br /> A02 <br /> Cobalt 51 1• mg/kg 30508 0324/04:A209 60108 03242004:A02 <br /> Copper 1360 14 mg/kg 30508 0324/04:A209 6010E 03242004:A02 <br /> Lead 34 14 mg/kg 3050B 0324/04:A209 6010B 03242004:A02 <br /> Mercury ND 0.03 mg/kg 7471A 0324/04:A212 7471A 03/242004:A02 <br /> Molybdenum 254 14 mg/kg 30508 03/24/04:A209 60108 03/24/2004:A02 <br /> Nickel 500 14 mg/kg 3050E 0324/04:A209 6010E 03242004:Ao2 <br /> Selenium 30 104 mg/kg 3050B 0324/04:A209 6010B 03/262004:A05 <br /> Silver ND 14 mg/kg 3050B 03/24/04:A209 60108 03242004:Ao2 <br /> Thallium ND 1004 mg/kg 3050E 0324/04:A209 60108 03/31/2004:A04 <br /> Vanadium 62 14 mg/kg 30508 0324/04:A209 6010E 03/242004:A02 <br /> Zinc 68 24 mg/kg 3050B 03/24/04:A209 6010B 0324/2 A02 <br /> ND=Non-Detect. PQL=Practical Quantitation Limit. • PQL adjusted for dilutions, concentrations, dry weight reporting, or limited sample. <br /> Containers: (G) Glass Jar Preservatives: (1) Cool 4°C <br /> STK431922: Chemical Results Page 6 <br />