Organic Blind Sample Program
False Positives & False Negatives
DICHLOROMETHANE
Method: 4440 Testid: 34423GCM66
Link to Individual Chart

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newdate = 07/14/17 falsepos = 0.05 newdate = 06/02/17 falsepos = 0.06 newdate = 04/21/17 falsepos = 0.09 newdate = 02/09/17 falsepos = 0.07 newdate = 12/16/16 falsepos = 0.15 newdate = 11/21/16 falsepos = 0.23 newdate = 10/13/16 falsepos = 0.04 newdate = 08/26/16 falsepos = 0.12 newdate = 07/20/16 falsepos = 0.11 newdate = 06/10/16 falsepos = 0.08 newdate = 06/23/17 CENC_VAL = 0.170 newdate = 06/17/17 CENC_VAL = 0.200 newdate = 06/09/17 CENC_VAL = 0.160 newdate = 05/25/17 CENC_VAL = 0.110 newdate = 05/17/17 CENC_VAL = 0.170 newdate = 04/03/17 CENC_VAL = 0.220 newdate = 03/09/17 CENC_VAL = 0.430 newdate = 02/24/17 CENC_VAL = 0.170 newdate = 02/03/17 CENC_VAL = 0.290 newdate = 01/26/17 CENC_VAL = 0.330 newdate = 01/04/17 CENC_VAL = 0.270 newdate = 12/24/16 CENC_VAL = 0.120 newdate = 12/12/16 CENC_VAL = 0.330 newdate = 11/29/16 CENC_VAL = 0.110 newdate = 11/14/16 CENC_VAL = 0.250 newdate = 10/29/16 CENC_VAL = 0.100 newdate = 10/13/16 CENC_VAL = 0.180 newdate = 09/29/16 CENC_VAL = 0.210 newdate = 09/08/16 CENC_VAL = 0.200 newdate = 09/08/16 CENC_VAL = 0.110 newdate = 08/20/16 CENC_VAL = 0.140 newdate = 08/12/16 CENC_VAL = 0.190 newdate = 07/29/16 CENC_VAL = 0.160 newdate = 07/20/16 CENC_VAL = 0.320 newdate = 07/14/16 CENC_VAL = 0.430 newdate = 06/30/16 CENC_VAL = 0.100 newdate = 06/21/16 CENC_VAL = 0.180 newdate = 05/27/16 CENC_VAL = 0.130 newdate = 05/24/16 CENC_VAL = 0.200 newdate = 05/13/16 CENC_VAL = 0.070 newdate = 04/02/16 CENC_VAL = 0.090 newdate = 03/04/16 CENC_VAL = 0.080 newdate = 02/18/16 CENC_VAL = 0.060 newdate = 01/27/16 CENC_VAL = 0.070 newdate = 07/14/17 REPORTING LEVEL = 0.04 newdate = 06/23/17 REPORTING LEVEL = 0.04 newdate = 06/23/17 REPORTING LEVEL = 0.04 newdate = 06/17/17 REPORTING LEVEL = 0.04 newdate = 06/17/17 REPORTING LEVEL = 0.04 newdate = 06/09/17 REPORTING LEVEL = 0.04 newdate = 06/09/17 REPORTING LEVEL = 0.04 newdate = 06/02/17 REPORTING LEVEL = 0.04 newdate = 06/02/17 REPORTING LEVEL = 0.04 newdate = 05/25/17 REPORTING LEVEL = 0.04 newdate = 05/25/17 REPORTING LEVEL = 0.04 newdate = 05/17/17 REPORTING LEVEL = 0.04 newdate = 05/17/17 REPORTING LEVEL = 0.04 newdate = 04/21/17 REPORTING LEVEL = 0.04 newdate = 04/21/17 REPORTING LEVEL = 0.04 newdate = 04/03/17 REPORTING LEVEL = 0.04 newdate = 04/03/17 REPORTING LEVEL = 0.04 newdate = 03/09/17 REPORTING LEVEL = 0.04 newdate = 03/09/17 REPORTING LEVEL = 0.04 newdate = 02/24/17 REPORTING LEVEL = 0.04 newdate = 02/24/17 REPORTING LEVEL = 0.04 newdate = 02/09/17 REPORTING LEVEL = 0.04 newdate = 02/09/17 REPORTING LEVEL = 0.04 newdate = 02/03/17 REPORTING LEVEL = 0.04 newdate = 02/03/17 REPORTING LEVEL = 0.04 newdate = 01/26/17 REPORTING LEVEL = 0.04 newdate = 01/26/17 REPORTING LEVEL = 0.04 newdate = 01/04/17 REPORTING LEVEL = 0.04 newdate = 01/04/17 REPORTING LEVEL = 0.04 newdate = 12/24/16 REPORTING LEVEL = 0.04 newdate = 12/24/16 REPORTING LEVEL = 0.04 newdate = 12/16/16 REPORTING LEVEL = 0.04 newdate = 12/16/16 REPORTING LEVEL = 0.04 newdate = 12/12/16 REPORTING LEVEL = 0.04 newdate = 12/12/16 REPORTING LEVEL = 0.04 newdate = 11/29/16 REPORTING LEVEL = 0.04 newdate = 11/29/16 REPORTING LEVEL = 0.04 newdate = 11/21/16 REPORTING LEVEL = 0.04 newdate = 11/21/16 REPORTING LEVEL = 0.04 newdate = 11/14/16 REPORTING LEVEL = 0.04 newdate = 11/14/16 REPORTING LEVEL = 0.04 newdate = 10/29/16 REPORTING LEVEL = 0.04 newdate = 10/29/16 REPORTING LEVEL = 0.04 newdate = 10/13/16 REPORTING LEVEL = 0.04 newdate = 10/13/16 REPORTING LEVEL = 0.04 newdate = 10/13/16 REPORTING LEVEL = 0.04 newdate = 10/13/16 REPORTING LEVEL = 0.04 newdate = 09/29/16 REPORTING LEVEL = 0.04 newdate = 09/29/16 REPORTING LEVEL = 0.04 newdate = 09/08/16 REPORTING LEVEL = 0.04 newdate = 09/08/16 REPORTING LEVEL = 0.04 newdate = 09/08/16 REPORTING LEVEL = 0.04 newdate = 09/08/16 REPORTING LEVEL = 0.04 newdate = 08/26/16 REPORTING LEVEL = 0.04 newdate = 08/26/16 REPORTING LEVEL = 0.04 newdate = 08/20/16 REPORTING LEVEL = 0.04 newdate = 08/20/16 REPORTING LEVEL = 0.04 newdate = 08/12/16 REPORTING LEVEL = 0.04 newdate = 08/12/16 REPORTING LEVEL = 0.04 newdate = 07/29/16 REPORTING LEVEL = 0.04 newdate = 07/29/16 REPORTING LEVEL = 0.04 newdate = 07/20/16 REPORTING LEVEL = 0.04 newdate = 07/20/16 REPORTING LEVEL = 0.04 newdate = 07/20/16 REPORTING LEVEL = 0.04 newdate = 07/20/16 REPORTING LEVEL = 0.04 newdate = 07/14/16 REPORTING LEVEL = 0.04 newdate = 07/14/16 REPORTING LEVEL = 0.04 newdate = 06/30/16 REPORTING LEVEL = 0.04 newdate = 06/30/16 REPORTING LEVEL = 0.04 newdate = 06/21/16 REPORTING LEVEL = 0.04 newdate = 06/21/16 REPORTING LEVEL = 0.04 newdate = 06/10/16 REPORTING LEVEL = 0.04 newdate = 06/10/16 REPORTING LEVEL = 0.04 newdate = 05/27/16 REPORTING LEVEL = 0.04 newdate = 05/27/16 REPORTING LEVEL = 0.04 newdate = 05/24/16 REPORTING LEVEL = 0.04 newdate = 05/24/16 REPORTING LEVEL = 0.04 newdate = 05/13/16 REPORTING LEVEL = 0.04 newdate = 05/13/16 REPORTING LEVEL = 0.04 newdate = 04/02/16 REPORTING LEVEL = 0.04 newdate = 04/02/16 REPORTING LEVEL = 0.04 newdate = 03/04/16 REPORTING LEVEL = 0.04 newdate = 03/04/16 REPORTING LEVEL = 0.04 newdate = 02/18/16 REPORTING LEVEL = 0.04 newdate = 02/18/16 REPORTING LEVEL = 0.04 newdate = 01/27/16 REPORTING LEVEL = 0.04
The SGPlot Procedure

Updated 03/27/2018

False Positive & Negative Listing for DICHLOROMETHANE

Status Lab ID Spike Mix Reporting Level Analysis Date Result Conc. Expected Conc.
False Positive 20161600091 NSI 041816AVOC: 15 µl & ChemService 5082900: 15 µl 0.04 06/10/16 0.08 0
  20161960007 NSI 041816AVOC: 25 µl & Supelco LC20141V: 25 µl 0.04 07/20/16 0.11 0
  20162380006 NSI 041816AVOC: 25 µl & ChemService 5082900: 25 µl 0.04 08/26/16 0.12 0
  20162860092 NSI 041816AVOC: 15 µl & Supelco LC20141V: 15 µl 0.04 10/13/16 0.04 0
  20163220168 Crescent 03FF058: 25 µl & Supelco LC20141V: 25 µl 0.04 11/21/16 0.23 0
  20163500004 NSI 041816AVOC: 40 µl & ChemService 5082900: 40 µl 0.04 12/16/16 0.15 0
  20170400006 NSI 041816AVOC: 15 µl & Supelco LC20141V: 15 µl 0.04 02/09/17 0.07 0
  20171090001 NSI 041816AVOC: 25 µl & Supelco LC20141V: 25 µl 0.04 04/21/17 0.09 0
  20171510078 NSI 041816AVOC: 15 µl & Supelco LC20141V: 15 µl 0.04 06/02/17 0.06 0
  20171940004 NSI 041816AVOC: 15 µl & Supelco LC20141V: 15 µl 0.04 07/14/17 0.05 0

Updated 03/27/2018