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January 23, 2008 Lab ID : STK0751018 Scotts Hyponex Corporation Customer : 3-12203 Quality Control -Inorganic Constituent Method Dat Type Units Conc. QC Data DQO Note Metals Nickel 2003 12/03/2007:212460 CCB ppm -0.00002 0.01 CCV ppm 1.000 99.4% 90-110 CCB ppm 0.0002 f 0.01 3050 11/30/2007:211589 Blank mg/kg ND <0.5 L.CS mg/kg 40.00 107% 85-115 MS mg/kg 40.00 118% 75-125 MSD mg/kg 40.00 235% 75-125 435 MSRPD 40.00 65.9% :520 435 Selenium 200.7 12/04/2007:212465 CCV ppm 1.000 99.5% 90-110 CCB ppm 0.0007 0.01 CCV ppm 1.000 98.4% 90-110 CCB I ppm 0.0008 1 0.01 3050 11/3((2007:211589 Blank mg/kg ND <0S L.CS mg/kg 40.00 101% 85-115 MS mg/kg 40.00 77.6% 75-125 MSD mg/kg 40.00 86.6% 75-125 MSRPD mgtkg 40.00 10.9% :520 Zinc 200.7 12tO3/2007:212460 CCV ppm 1.000 97.5% 90-110 CCB ppm -.000007 0.02 CCV ppm 1.000 98.7% 90-110 CCB p2m 1 0.0003 0.02 3050 11/30/2007:211589 Blank mg/kg ND <1 L.CS mg/kg 100.0 110% 85-115 MS mg/kg 100.0 85.2% 75-125 MSD mg/kg 100.0 95.0% 75-125 MSRPD mgtkg 40.00 10.7% <_20 Wet Chem %Solids 2540E 11/2((2007:211302 Blank % ND <0.1 Dun 1.3% 23.9 Definition CCV :Continuing Calibration Verification- Analyzed to verify the instrument calibration is within criteria. CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within criteria. Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. L.CS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. MS Matrix Spikes-A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD :Matrix Spike Duplicate of MS/MSD pair-A ran sample duplicate is spiked with a known amount of analyted. The recoveries are an indication of how that sample matrix affects analyte recovery. Dup :Duplicate Sample-A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an indication of precision for the preparation and analysis. MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation and analysis. ND :Non-detect-Result was below the DQO listed for the analyte. DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. Expiaination 435 :S le matrix MM be affecft this an!!)Le. Data was ted based on the LCS or CCV recovery. STKO751018:Quality Control Page 2 of 2