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. � a s nccoRo <br /> ENVIRONMENTAL <br /> he <br /> _ A <br /> Analytical Chemists <br /> February 9,2010 Lab ID : STK1030077 <br /> Stockton Steel Customer : 3-2690 <br /> Quality Control-Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Metals <br /> Barium 200.7 01/08/2010:200257 CCV ppm 1.000 105% 90-110 <br /> CCB ppm -0.00772 0.005 220 <br /> CCV ppm 1.000 103% 90-110 <br /> CCB p2m -0.00711 0.005 220 <br /> Cadmium 2003 01/08/2010:200257 CCV ppm 0.9990 102% 90-I10 <br /> CCB ppm 0.00010 0.005 <br /> CCV ppm 0.9990 101% 90-110 <br /> CCB PPM 0.00022 0.005 <br /> Chromium 200.7 01108/2010:200257 CCV ppm 0.9990 103% 90.110 <br /> CCB ppm 0.0002 0.01 <br /> CCV ppm 0.9990 100% 90-110 <br /> CCB ppm 0.0004 0.01 <br /> Cobalt 200.7 01/08/2010:200257 CCV ppm 0.9990 1 105% 90.110 <br /> CCB ppm -0.0004 0.01 <br /> CCV ppm 0.9990 103% 90-110 <br /> CCB Ppm -0.0012 0.01 <br /> Copper 200.7 01/08/2010:200257 CCV ppm 0.9990 104% 90-110 <br /> CCB ppm -0.00006 0.01 <br /> CCV ppm 0.9990 102% 90-110 <br /> CCB ppm 0.00002 0.01 <br /> Lead 200.7 01/08/2010:200257 CCV ppm 2.000 99.3% 90-110 <br /> CCB ppm -0.0008 0.01 <br /> CCV ppm 2.000 96.9% 90-110 <br /> CCB ppm 0.00004 0.01 <br /> Molybdenum 200.7 01/08/2010:200257 CCV ppm 0.9980 108% 90-110 <br /> CCB ppm 0.0003 0.01 <br /> CCV ppm 0.9980 107% 90-110 <br /> CCB m 0.0007 0.01 <br /> Nickel 2003 01/08/2010:200257 CCV ppm 0.9990 105% 90-110 <br /> CCB ppm 0.0003 0.01 <br /> CCV ppm 0.9990 102% 90-110 <br /> CCB m 0.0005 0.01 <br /> Selenium 2003 01/13/2010:200323 CCV ppm 0.9990 98.3% 90-110 <br /> CCB ppm -0.0017 0.01 <br /> CCV ppm 0.9990 97.6% 90-110 <br /> CCB ppm -0.0013 0.01 <br /> Vanadium 200.7 01/08/2010:200257 CCV ppm 0.9990 102% 90-110 <br /> CCB ppm -0.00008 0.01 <br /> CCV ppm 0.9990 101% 90-110 <br /> CCB PPM -0.00001 0.01 <br /> inc 200.7 01/08/2010:200257 CCVppm 0.9990 104% 90-110 <br /> CCB ppm -0.0006 0.02 <br /> CCV ppm 0.9990 102% 90-110 <br /> CCB Ppm -0.0002 0.02 <br /> ercury 245.1 01/06/2010:200006 CCV ppb 3.996 99.6% 907110 <br /> CCB ppb 0.03 20 <br /> CCV ppb 3.996 95.3% 90.110 <br /> CCB el± 0.03 20 <br /> Antimony 3050 01/16/2010:200513 Blank mWkg ND <0.15 <br /> LCS mg/kg 1.248 104% 85-115 <br /> MS mg/kg 1.248 46.9% 75-125 435 <br /> (SP 1000095-001) MSD mg/kg 1.248 46.1% 75-125 435 <br /> MSRPD mg/kg 1.998 0,88/0 _<20 <br /> PAS mgft 1248 39.7% 75-125 P <br /> Arsenic 3050 01116/2010:200513 1 Blank m8&9 ND <0.1 <br /> Page 4 of 7 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Field Office <br /> 853 Corporation Street 2600 Stagecoach Road 563 E.Undo Avenue Visalia,California <br /> Santa Paula,CA 93060 Stockton,CA95215 Chico,CA 95926 TEL:5591734-9473 <br /> TEL:8051392-2000 TEL:2091942-0182 TEL:6301343-5618 Moblle:6591737-2399 <br /> FAX:805/526-4172 FAX:2091942-0423 FAX 5301343-3807 FAX:5591734.8436 <br /> CA NEtAP Certification No.01110CA CA ELAP Certification No.1663 CA ELAP Certification No.2670 <br />