BQS OBSP Determination:
TERT-BUTYL METHYL ETHER (MTBE)
METHOD: 4024 , TESTIDCODE: 78032GCM60
Open Data Set

Analysis Date = 09/02/06 SpikeMix = Ultra CB-1580: 25 µl Pct Recovery = 128% Analysis Date = 07/25/06 SpikeMix = Ultra CB-1580: 25 µl Pct Recovery = 132% Analysis Date = 03/11/06 SpikeMix = Ultra CB-1580: 20 µl Pct Recovery = 110% Analysis Date = 02/01/06 SpikeMix = Ultra CB-1580: 20 µl Pct Recovery = 118% Analysis Date = 07/22/05 SpikeMix = Supelco LB22063: 25 µl Pct Recovery = 112% Analysis Date = 06/03/05 SpikeMix = Supelco LB22063: 20 µl Pct Recovery = 103% Analysis Date = 11/30/04 SpikeMix = Supelco LB22063: 20 µl Pct Recovery = 97% Analysis Date = 06/17/04 SpikeMix = Supelco LB14634: 30 µl Pct Recovery = 97% Analysis Date = 03/11/04 SpikeMix = Supelco LB14634: 30 µl Pct Recovery = 128% Analysis Date = 01/14/04 SpikeMix = Supelco LB14634: 30 µl Pct Recovery = 126% Analysis Date = 08/20/06 SpikeMix = Ultra CB-1580: 10 µl Pct Recovery = 112% Analysis Date = 06/16/06 SpikeMix = Ultra CB-1580: 10 µl Pct Recovery = 115% Analysis Date = 04/11/06 SpikeMix = Ultra CB-1580: 8 µl Pct Recovery = 107% Analysis Date = 02/28/06 SpikeMix = Ultra CB-1580: 8 µl Pct Recovery = 100% Analysis Date = 11/25/05 SpikeMix = Ultra CB-1580: 8 µl Pct Recovery = 106% Analysis Date = 05/05/05 SpikeMix = Supelco LB22063: 10 µl Pct Recovery = 98% Analysis Date = 02/04/05 SpikeMix = Supelco LB22063: 10 µl Pct Recovery = 89% Analysis Date = 08/24/04 SpikeMix = ChemService 309-107A: 15 µl Pct Recovery = 104% Analysis Date = 06/05/04 SpikeMix = ChemService 309-107A: 15 µl Pct Recovery = 106% Analysis Date = 04/14/04 SpikeMix = ChemService 309-107A: 15 µl Pct Recovery = 134% Analysis Date = 02/07/04 SpikeMix = ChemService 309-107A: 15 µl Pct Recovery = 128% Analysis Date = 12/06/03 SpikeMix = ChemService 309-107A: 15 µl Pct Recovery = 128% Analysis Date = 10/09/03 SpikeMix = ChemService 309-107A: 15 µl Pct Recovery = 111% Analysis Date = 09/10/05 SpikeMix = Supelco LB22063: 8 µl & Absolute 071904VOC2: 8 µl Pct Recovery = 103% Analysis Date = 05/05/05 SpikeMix = Supelco LB22063: 8 µl & Absolute 071904VOC2: 8 µl Pct Recovery = 97% Analysis Date = 03/03/05 SpikeMix = Supelco LB22063: 8 µl & Absolute 071904VOC2: 8 µl Pct Recovery = 97% Analysis Date = 12/31/04 SpikeMix = Supelco LB22063: 8 µl & Absolute 071904VOC2: 8 µl Pct Recovery = 99% Analysis Date = 08/31/05 SpikeMix = Supelco LB22063: 8 µl Pct Recovery = 112% Analysis Date = 04/15/05 SpikeMix = Supelco LB22063: 8 µl Pct Recovery = 104% Analysis Date = 12/15/04 SpikeMix = Supelco LB22063: 8 µl Pct Recovery = 106% Analysis Date = 10/15/04 SpikeMix = Supelco LB22063: 8 µl Pct Recovery = 109% Analysis Date = 05/04/06 SpikeMix = Ultra CB-1580: 5 µl Pct Recovery = 106% Analysis Date = 01/12/06 SpikeMix = Ultra CB-1580: 5 µl Pct Recovery = 108% Analysis Date = 10/29/05 SpikeMix = Ultra CB-1580: 5 µl Pct Recovery = 109% Analysis Date = 07/16/04 SpikeMix = Supelco LB14634: 10 µl Pct Recovery = 102% Analysis Date = 05/06/04 SpikeMix = Supelco LB14634: 10 µl Pct Recovery = 108% Analysis Date = 11/07/03 SpikeMix = Supelco LB14634: 10 µl Pct Recovery = 111% Analysis Date = 07/25/09 SpikeMix = Crescent 08HH020: 40 µl Pct Recovery = 108% Analysis Date = 12/11/08 SpikeMix = Crescent 08HH020: 40 µl Pct Recovery = 105% Analysis Date = 07/01/09 SpikeMix = Accu B8080231: 40 µl Pct Recovery = 100% Analysis Date = 06/30/12 SpikeMix = Accu 212051187: 25 µl Pct Recovery = 75% Analysis Date = 09/18/07 SpikeMix = Restek A046458: 10 µl Pct Recovery = 79% Analysis Date = 08/29/07 SpikeMix = Restek A046458: 10 µl Pct Recovery = 93% Analysis Date = 08/02/07 SpikeMix = Restek A046458: 10 µl Pct Recovery = 96% Analysis Date = 07/14/07 SpikeMix = Restek A046458: 10 µl Pct Recovery = 111% Analysis Date = 06/22/07 SpikeMix = Restek A046458: 10 µl Pct Recovery = 96% Analysis Date = 05/31/07 SpikeMix = Restek A046458: 10 µl Pct Recovery = 93% Analysis Date = 03/23/07 SpikeMix = Restek A046458: 10 µl Pct Recovery = 104% Analysis Date = 12/29/06 SpikeMix = Restek A046458: 10 µl Pct Recovery = 93% Analysis Date = 12/01/06 SpikeMix = Restek A046458: 10 µl Pct Recovery = 104% Analysis Date = 03/26/13 SpikeMix = ChemService 426000: 20 µl Pct Recovery = 137% Analysis Date = 02/19/13 SpikeMix = ChemService 426000: 20 µl Pct Recovery = 126% Analysis Date = 01/03/13 SpikeMix = Accu 212051187: 20 µl Pct Recovery = 83% Analysis Date = 09/24/04 SpikeMix = Ultra U1734: 10 µl Pct Recovery = 95% Analysis Date = 07/02/04 SpikeMix = Ultra U1734: 10 µl Pct Recovery = 90% Analysis Date = 06/05/04 SpikeMix = Ultra U1734: 10 µl Pct Recovery = 90% Analysis Date = 04/22/04 SpikeMix = Ultra U1734: 10 µl Pct Recovery = 90% Analysis Date = 01/22/04 SpikeMix = Ultra U1734: 10 µl Pct Recovery = 95% Analysis Date = 12/13/03 SpikeMix = Ultra U1734: 10 µl Pct Recovery = 90% Analysis Date = 03/10/12 SpikeMix = Restek A075544: 40 µl Pct Recovery = 111% Analysis Date = 09/13/11 SpikeMix = Restek A075544: 40 µl Pct Recovery = 108% Analysis Date = 08/18/11 SpikeMix = Restek A075544: 40 µl Pct Recovery = 115% Analysis Date = 11/15/11 SpikeMix = NSI 062210-01: 40 µl Pct Recovery = 105% Analysis Date = 08/02/11 SpikeMix = NSI 062210-01: 40 µl Pct Recovery = 100% Analysis Date = 11/09/10 SpikeMix = NSI 062210-01: 40 µl Pct Recovery = 96% Analysis Date = 04/07/09 SpikeMix = Crescent 08HH020: 20 µl Pct Recovery = 110% Analysis Date = 02/21/09 SpikeMix = Crescent 08HH020: 20 µl Pct Recovery = 100% Analysis Date = 10/22/08 SpikeMix = Crescent 08HH020: 20 µl Pct Recovery = 105% Analysis Date = 08/25/09 SpikeMix = Accu B8080231: 20 µl Pct Recovery = 100% Analysis Date = 03/09/09 SpikeMix = Accu B8080231: 20 µl Pct Recovery = 105% Analysis Date = 10/29/08 SpikeMix = Accu B8080231: 20 µl Pct Recovery = 105% Analysis Date = 08/28/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 116% Analysis Date = 08/08/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 110% Analysis Date = 07/10/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 128% Analysis Date = 06/10/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 134% Analysis Date = 05/06/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 116% Analysis Date = 04/15/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 128% Analysis Date = 03/27/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 122% Analysis Date = 03/08/08 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 110% Analysis Date = 11/19/07 SpikeMix = ChemService 385-17C: 20 µl Pct Recovery = 116% Analysis Date = 11/27/12 SpikeMix = ChemService 426000: 10 µl Pct Recovery = 133% Analysis Date = 09/08/12 SpikeMix = ChemService 426000: 10 µl Pct Recovery = 141% Analysis Date = 10/22/12 SpikeMix = Accu 212051187: 10 µl Pct Recovery = 93% Analysis Date = 07/11/12 SpikeMix = Accu 212051187: 10 µl Pct Recovery = 87% Analysis Date = 08/27/10 SpikeMix = ERA 0817-09-02VOA: 40 µl Pct Recovery = 108% Analysis Date = 08/17/10 SpikeMix = ERA 0817-09-02VOA: 40 µl Pct Recovery = 102% Analysis Date = 07/19/10 SpikeMix = Ultra CF-3592: 40 µl Pct Recovery = 117% Analysis Date = 02/10/12 SpikeMix = Restek A075544: 20 µl Pct Recovery = 102% Analysis Date = 10/15/11 SpikeMix = Restek A075544: 20 µl Pct Recovery = 94% Analysis Date = 06/21/11 SpikeMix = Restek A075544: 20 µl Pct Recovery = 104% Analysis Date = 10/09/10 SpikeMix = Restek A075544: 20 µl Pct Recovery = 99% Analysis Date = 06/07/12 SpikeMix = NSI 062210-01: 20 µl Pct Recovery = 86% Analysis Date = 08/26/11 SpikeMix = NSI 062210-01: 20 µl Pct Recovery = 94% Analysis Date = 07/19/11 SpikeMix = NSI 062210-01: 20 µl Pct Recovery = 92% Analysis Date = 12/10/10 SpikeMix = NSI 062210-01: 20 µl Pct Recovery = 89% Analysis Date = 06/07/13 SpikeMix = ChemService 1448500: 10 µl Pct Recovery = 114% Analysis Date = 06/24/10 SpikeMix = ERA 0817-09-02VOA: 20 µl Pct Recovery = 116% Analysis Date = 04/22/10 SpikeMix = ERA 0817-09-02VOA: 20 µl Pct Recovery = 108% Analysis Date = 02/09/10 SpikeMix = ERA 0817-09-02VOA: 20 µl Pct Recovery = 104% Analysis Date = 05/06/10 SpikeMix = Ultra CF-3592: 20 µl Pct Recovery = 102% Analysis Date = 03/26/10 SpikeMix = Ultra CF-3592: 20 µl Pct Recovery = 112% Analysis Date = 10/26/09 SpikeMix = Ultra CF-3592: 20 µl Pct Recovery = 96% Analysis Date = 06/07/13 Pct Recovery = 106% Analysis Date = 05/20/13 Pct Recovery = 106% Analysis Date = 05/20/13 Pct Recovery = 106% Analysis Date = 05/02/13 Pct Recovery = 106% Analysis Date = 05/02/13 Pct Recovery = 106% Analysis Date = 04/15/13 Pct Recovery = 106% Analysis Date = 04/15/13 Pct Recovery = 106% Analysis Date = 03/28/13 Pct Recovery = 106% Analysis Date = 03/28/13 Pct Recovery = 106% Analysis Date = 03/10/13 Pct Recovery = 106% Analysis Date = 03/10/13 Pct Recovery = 106% Analysis Date = 02/21/13 Pct Recovery = 106% Analysis Date = 02/21/13 Pct Recovery = 106% Analysis Date = 02/03/13 Pct Recovery = 106% Analysis Date = 02/03/13 Pct Recovery = 106% Analysis Date = 01/16/13 Pct Recovery = 106% Analysis Date = 01/16/13 Pct Recovery = 106% Analysis Date = 12/30/12 Pct Recovery = 106% Analysis Date = 12/30/12 Pct Recovery = 106% Analysis Date = 12/12/12 Pct Recovery = 106% Analysis Date = 12/12/12 Pct Recovery = 106% Analysis Date = 11/24/12 Pct Recovery = 106% Analysis Date = 11/24/12 Pct Recovery = 106% Analysis Date = 11/07/12 Pct Recovery = 106% Analysis Date = 11/07/12 Pct Recovery = 106% Analysis Date = 10/20/12 Pct Recovery = 105% Analysis Date = 10/20/12 Pct Recovery = 105% Analysis Date = 10/02/12 Pct Recovery = 105% Analysis Date = 10/02/12 Pct Recovery = 105% Analysis Date = 09/15/12 Pct Recovery = 105% Analysis Date = 09/15/12 Pct Recovery = 105% Analysis Date = 08/28/12 Pct Recovery = 105% Analysis Date = 08/28/12 Pct Recovery = 105% Analysis Date = 08/11/12 Pct Recovery = 105% Analysis Date = 08/11/12 Pct Recovery = 105% Analysis Date = 07/24/12 Pct Recovery = 105% Analysis Date = 07/24/12 Pct Recovery = 105% Analysis Date = 07/06/12 Pct Recovery = 105% Analysis Date = 07/06/12 Pct Recovery = 105% Analysis Date = 06/19/12 Pct Recovery = 105% Analysis Date = 06/19/12 Pct Recovery = 105% Analysis Date = 06/01/12 Pct Recovery = 105% Analysis Date = 06/01/12 Pct Recovery = 105% Analysis Date = 05/14/12 Pct Recovery = 105% Analysis Date = 05/14/12 Pct Recovery = 105% Analysis Date = 04/27/12 Pct Recovery = 105% Analysis Date = 04/27/12 Pct Recovery = 105% Analysis Date = 04/09/12 Pct Recovery = 105% Analysis Date = 04/09/12 Pct Recovery = 105% Analysis Date = 03/22/12 Pct Recovery = 105% Analysis Date = 03/22/12 Pct Recovery = 105% Analysis Date = 03/05/12 Pct Recovery = 105% Analysis Date = 03/05/12 Pct Recovery = 105% Analysis Date = 02/16/12 Pct Recovery = 105% Analysis Date = 02/16/12 Pct Recovery = 105% Analysis Date = 01/29/12 Pct Recovery = 105% Analysis Date = 01/29/12 Pct Recovery = 105% Analysis Date = 01/12/12 Pct Recovery = 105% Analysis Date = 01/12/12 Pct Recovery = 105% Analysis Date = 12/25/11 Pct Recovery = 105% Analysis Date = 12/25/11 Pct Recovery = 105% Analysis Date = 12/08/11 Pct Recovery = 105% Analysis Date = 12/08/11 Pct Recovery = 105% Analysis Date = 11/20/11 Pct Recovery = 105% Analysis Date = 11/20/11 Pct Recovery = 105% Analysis Date = 11/02/11 Pct Recovery = 105% Analysis Date = 11/02/11 Pct Recovery = 105% Analysis Date = 10/16/11 Pct Recovery = 105% Analysis Date = 10/16/11 Pct Recovery = 105% Analysis Date = 09/28/11 Pct Recovery = 105% Analysis Date = 09/28/11 Pct Recovery = 105% Analysis Date = 09/10/11 Pct Recovery = 105% Analysis Date = 09/10/11 Pct Recovery = 105% Analysis Date = 08/24/11 Pct Recovery = 105% Analysis Date = 08/24/11 Pct Recovery = 105% Analysis Date = 08/06/11 Pct Recovery = 105% Analysis Date = 08/06/11 Pct Recovery = 105% Analysis Date = 07/19/11 Pct Recovery = 105% Analysis Date = 07/19/11 Pct Recovery = 105% Analysis Date = 07/02/11 Pct Recovery = 105% Analysis Date = 07/02/11 Pct Recovery = 105% Analysis Date = 06/14/11 Pct Recovery = 105% Analysis Date = 06/14/11 Pct Recovery = 105% Analysis Date = 05/27/11 Pct Recovery = 105% Analysis Date = 05/27/11 Pct Recovery = 105% Analysis Date = 05/10/11 Pct Recovery = 105% Analysis Date = 05/10/11 Pct Recovery = 105% Analysis Date = 04/22/11 Pct Recovery = 105% Analysis Date = 04/22/11 Pct Recovery = 105% Analysis Date = 04/04/11 Pct Recovery = 105% Analysis Date = 04/04/11 Pct Recovery = 105% Analysis Date = 03/18/11 Pct Recovery = 105% Analysis Date = 03/18/11 Pct Recovery = 105% Analysis Date = 02/28/11 Pct Recovery = 105% Analysis Date = 02/28/11 Pct Recovery = 105% Analysis Date = 02/11/11 Pct Recovery = 105% Analysis Date = 02/11/11 Pct Recovery = 105% Analysis Date = 01/24/11 Pct Recovery = 105% Analysis Date = 01/24/11 Pct Recovery = 105% Analysis Date = 01/06/11 Pct Recovery = 105% Analysis Date = 01/06/11 Pct Recovery = 105% Analysis Date = 12/20/10 Pct Recovery = 105% Analysis Date = 12/20/10 Pct Recovery = 105% Analysis Date = 12/02/10 Pct Recovery = 105% Analysis Date = 12/02/10 Pct Recovery = 105% Analysis Date = 11/14/10 Pct Recovery = 105% Analysis Date = 11/14/10 Pct Recovery = 105% Analysis Date = 10/28/10 Pct Recovery = 105% Analysis Date = 10/28/10 Pct Recovery = 105% Analysis Date = 10/10/10 Pct Recovery = 105% Analysis Date = 10/10/10 Pct Recovery = 105% Analysis Date = 09/22/10 Pct Recovery = 105% Analysis Date = 09/22/10 Pct Recovery = 105% Analysis Date = 09/05/10 Pct Recovery = 105% Analysis Date = 09/05/10 Pct Recovery = 105% Analysis Date = 08/18/10 Pct Recovery = 105% Analysis Date = 08/18/10 Pct Recovery = 105% Analysis Date = 07/31/10 Pct Recovery = 105% Analysis Date = 07/31/10 Pct Recovery = 105% Analysis Date = 07/14/10 Pct Recovery = 105% Analysis Date = 07/14/10 Pct Recovery = 105% Analysis Date = 06/26/10 Pct Recovery = 105% Analysis Date = 06/26/10 Pct Recovery = 105% Analysis Date = 06/09/10 Pct Recovery = 105% Analysis Date = 06/09/10 Pct Recovery = 105% Analysis Date = 05/22/10 Pct Recovery = 105% Analysis Date = 05/22/10 Pct Recovery = 105% Analysis Date = 05/04/10 Pct Recovery = 105% Analysis Date = 05/04/10 Pct Recovery = 105% Analysis Date = 04/17/10 Pct Recovery = 105% Analysis Date = 04/17/10 Pct Recovery = 105% Analysis Date = 03/30/10 Pct Recovery = 106% Analysis Date = 03/30/10 Pct Recovery = 106% Analysis Date = 03/12/10 Pct Recovery = 106% Analysis Date = 03/12/10 Pct Recovery = 106% Analysis Date = 02/23/10 Pct Recovery = 106% Analysis Date = 02/23/10 Pct Recovery = 106% Analysis Date = 02/05/10 Pct Recovery = 106% Analysis Date = 02/05/10 Pct Recovery = 106% Analysis Date = 01/18/10 Pct Recovery = 106% Analysis Date = 01/18/10 Pct Recovery = 106% Analysis Date = 01/01/10 Pct Recovery = 106% Analysis Date = 01/01/10 Pct Recovery = 106% Analysis Date = 12/14/09 Pct Recovery = 106% Analysis Date = 12/14/09 Pct Recovery = 106% Analysis Date = 11/26/09 Pct Recovery = 106% Analysis Date = 11/26/09 Pct Recovery = 106% Analysis Date = 11/09/09 Pct Recovery = 106% Analysis Date = 11/09/09 Pct Recovery = 106% Analysis Date = 10/22/09 Pct Recovery = 106% Analysis Date = 10/22/09 Pct Recovery = 106% Analysis Date = 10/04/09 Pct Recovery = 106% Analysis Date = 10/04/09 Pct Recovery = 106% Analysis Date = 09/17/09 Pct Recovery = 106% Analysis Date = 09/17/09 Pct Recovery = 106% Analysis Date = 08/30/09 Pct Recovery = 106% Analysis Date = 08/30/09 Pct Recovery = 106% Analysis Date = 08/13/09 Pct Recovery = 106% Analysis Date = 08/13/09 Pct Recovery = 106% Analysis Date = 07/26/09 Pct Recovery = 106% Analysis Date = 07/26/09 Pct Recovery = 106% Analysis Date = 07/08/09 Pct Recovery = 106% Analysis Date = 07/08/09 Pct Recovery = 106% Analysis Date = 06/21/09 Pct Recovery = 107% Analysis Date = 06/21/09 Pct Recovery = 107% Analysis Date = 06/03/09 Pct Recovery = 107% Analysis Date = 06/03/09 Pct Recovery = 107% Analysis Date = 05/16/09 Pct Recovery = 107% Analysis Date = 05/16/09 Pct Recovery = 107% Analysis Date = 04/29/09 Pct Recovery = 107% Analysis Date = 04/29/09 Pct Recovery = 107% Analysis Date = 04/11/09 Pct Recovery = 107% Analysis Date = 04/11/09 Pct Recovery = 107% Analysis Date = 03/24/09 Pct Recovery = 107% Analysis Date = 03/24/09 Pct Recovery = 107% Analysis Date = 03/07/09 Pct Recovery = 107% Analysis Date = 03/07/09 Pct Recovery = 107% Analysis Date = 02/17/09 Pct Recovery = 107% Analysis Date = 02/17/09 Pct Recovery = 107% Analysis Date = 01/30/09 Pct Recovery = 107% Analysis Date = 01/30/09 Pct Recovery = 107% Analysis Date = 01/13/09 Pct Recovery = 107% Analysis Date = 01/13/09 Pct Recovery = 107% Analysis Date = 12/26/08 Pct Recovery = 107% Analysis Date = 12/26/08 Pct Recovery = 107% Analysis Date = 12/09/08 Pct Recovery = 107% Analysis Date = 12/09/08 Pct Recovery = 107% Analysis Date = 11/21/08 Pct Recovery = 107% Analysis Date = 11/21/08 Pct Recovery = 107% Analysis Date = 11/03/08 Pct Recovery = 107% Analysis Date = 11/03/08 Pct Recovery = 107% Analysis Date = 10/17/08 Pct Recovery = 107% Analysis Date = 10/17/08 Pct Recovery = 107% Analysis Date = 09/29/08 Pct Recovery = 108% Analysis Date = 09/29/08 Pct Recovery = 108% Analysis Date = 09/11/08 Pct Recovery = 108% Analysis Date = 09/11/08 Pct Recovery = 108% Analysis Date = 08/25/08 Pct Recovery = 108% Analysis Date = 08/25/08 Pct Recovery = 108% Analysis Date = 08/07/08 Pct Recovery = 108% Analysis Date = 08/07/08 Pct Recovery = 108% Analysis Date = 07/20/08 Pct Recovery = 108% Analysis Date = 07/20/08 Pct Recovery = 108% Analysis Date = 07/03/08 Pct Recovery = 108% Analysis Date = 07/03/08 Pct Recovery = 108% Analysis Date = 06/15/08 Pct Recovery = 108% Analysis Date = 06/15/08 Pct Recovery = 108% Analysis Date = 05/28/08 Pct Recovery = 108% Analysis Date = 05/28/08 Pct Recovery = 108% Analysis Date = 05/11/08 Pct Recovery = 108% Analysis Date = 05/11/08 Pct Recovery = 108% Analysis Date = 04/23/08 Pct Recovery = 108% Analysis Date = 04/23/08 Pct Recovery = 108% Analysis Date = 04/05/08 Pct Recovery = 108% Analysis Date = 04/05/08 Pct Recovery = 108% Analysis Date = 03/19/08 Pct Recovery = 108% Analysis Date = 03/19/08 Pct Recovery = 108% Analysis Date = 03/01/08 Pct Recovery = 108% Analysis Date = 03/01/08 Pct Recovery = 108% Analysis Date = 02/13/08 Pct Recovery = 108% Analysis Date = 02/13/08 Pct Recovery = 108% Analysis Date = 01/26/08 Pct Recovery = 108% Analysis Date = 01/26/08 Pct Recovery = 108% Analysis Date = 01/08/08 Pct Recovery = 108% Analysis Date = 01/08/08 Pct Recovery = 108% Analysis Date = 12/22/07 Pct Recovery = 108% Analysis Date = 12/22/07 Pct Recovery = 108% Analysis Date = 12/04/07 Pct Recovery = 108% Analysis Date = 12/04/07 Pct Recovery = 108% Analysis Date = 11/16/07 Pct Recovery = 108% Analysis Date = 11/16/07 Pct Recovery = 108% Analysis Date = 10/30/07 Pct Recovery = 108% Analysis Date = 10/30/07 Pct Recovery = 108% Analysis Date = 10/12/07 Pct Recovery = 108% Analysis Date = 10/12/07 Pct Recovery = 108% Analysis Date = 09/24/07 Pct Recovery = 109% Analysis Date = 09/24/07 Pct Recovery = 109% Analysis Date = 09/07/07 Pct Recovery = 109% Analysis Date = 09/07/07 Pct Recovery = 109% Analysis Date = 08/20/07 Pct Recovery = 109% Analysis Date = 08/20/07 Pct Recovery = 109% Analysis Date = 08/02/07 Pct Recovery = 108% Analysis Date = 08/02/07 Pct Recovery = 108% Analysis Date = 07/16/07 Pct Recovery = 108% Analysis Date = 07/16/07 Pct Recovery = 108% Analysis Date = 06/28/07 Pct Recovery = 108% Analysis Date = 06/28/07 Pct Recovery = 108% Analysis Date = 06/11/07 Pct Recovery = 108% Analysis Date = 06/11/07 Pct Recovery = 108% Analysis Date = 05/24/07 Pct Recovery = 108% Analysis Date = 05/24/07 Pct Recovery = 108% Analysis Date = 05/06/07 Pct Recovery = 108% Analysis Date = 05/06/07 Pct Recovery = 108% Analysis Date = 04/19/07 Pct Recovery = 108% Analysis Date = 04/19/07 Pct Recovery = 108% Analysis Date = 04/01/07 Pct Recovery = 108% Analysis Date = 04/01/07 Pct Recovery = 108% Analysis Date = 03/14/07 Pct Recovery = 108% Analysis Date = 03/14/07 Pct Recovery = 108% Analysis Date = 02/25/07 Pct Recovery = 107% Analysis Date = 02/25/07 Pct Recovery = 107% Analysis Date = 02/07/07 Pct Recovery = 107% Analysis Date = 02/07/07 Pct Recovery = 107% Analysis Date = 01/20/07 Pct Recovery = 107% Analysis Date = 01/20/07 Pct Recovery = 107% Analysis Date = 01/03/07 Pct Recovery = 107% Analysis Date = 01/03/07 Pct Recovery = 107% Analysis Date = 12/16/06 Pct Recovery = 107% Analysis Date = 12/16/06 Pct Recovery = 107% Analysis Date = 11/28/06 Pct Recovery = 107% Analysis Date = 11/28/06 Pct Recovery = 107% Analysis Date = 11/11/06 Pct Recovery = 107% Analysis Date = 11/11/06 Pct Recovery = 107% Analysis Date = 10/24/06 Pct Recovery = 107% Analysis Date = 10/24/06 Pct Recovery = 107% Analysis Date = 10/06/06 Pct Recovery = 107% Analysis Date = 10/06/06 Pct Recovery = 107% Analysis Date = 09/19/06 Pct Recovery = 107% Analysis Date = 09/19/06 Pct Recovery = 107% Analysis Date = 09/01/06 Pct Recovery = 106% Analysis Date = 09/01/06 Pct Recovery = 106% Analysis Date = 08/15/06 Pct Recovery = 106% Analysis Date = 08/15/06 Pct Recovery = 106% Analysis Date = 07/28/06 Pct Recovery = 106% Analysis Date = 07/28/06 Pct Recovery = 106% Analysis Date = 07/10/06 Pct Recovery = 106% Analysis Date = 07/10/06 Pct Recovery = 106% Analysis Date = 06/23/06 Pct Recovery = 106% Analysis Date = 06/23/06 Pct Recovery = 106% Analysis Date = 06/05/06 Pct Recovery = 106% Analysis Date = 06/05/06 Pct Recovery = 106% Analysis Date = 05/18/06 Pct Recovery = 106% Analysis Date = 05/18/06 Pct Recovery = 106% Analysis Date = 05/01/06 Pct Recovery = 106% Analysis Date = 05/01/06 Pct Recovery = 106% Analysis Date = 04/13/06 Pct Recovery = 106% Analysis Date = 04/13/06 Pct Recovery = 106% Analysis Date = 03/26/06 Pct Recovery = 106% Analysis Date = 03/26/06 Pct Recovery = 106% Analysis Date = 03/09/06 Pct Recovery = 106% Analysis Date = 03/09/06 Pct Recovery = 106% Analysis Date = 02/19/06 Pct Recovery = 106% Analysis Date = 02/19/06 Pct Recovery = 106% Analysis Date = 02/01/06 Pct Recovery = 106% Analysis Date = 02/01/06 Pct Recovery = 106% Analysis Date = 01/15/06 Pct Recovery = 106% Analysis Date = 01/15/06 Pct Recovery = 106% Analysis Date = 12/28/05 Pct Recovery = 106% Analysis Date = 12/28/05 Pct Recovery = 106% Analysis Date = 12/11/05 Pct Recovery = 106% Analysis Date = 12/11/05 Pct Recovery = 106% Analysis Date = 11/23/05 Pct Recovery = 106% Analysis Date = 11/23/05 Pct Recovery = 106% Analysis Date = 11/05/05 Pct Recovery = 106% Analysis Date = 11/05/05 Pct Recovery = 106% Analysis Date = 10/19/05 Pct Recovery = 106% Analysis Date = 10/19/05 Pct Recovery = 106% Analysis Date = 10/01/05 Pct Recovery = 106% Analysis Date = 10/01/05 Pct Recovery = 106% Analysis Date = 09/13/05 Pct Recovery = 106% Analysis Date = 09/13/05 Pct Recovery = 106% Analysis Date = 08/27/05 Pct Recovery = 106% Analysis Date = 08/27/05 Pct Recovery = 106% Analysis Date = 08/09/05 Pct Recovery = 106% Analysis Date = 08/09/05 Pct Recovery = 106% Analysis Date = 07/22/05 Pct Recovery = 106% Analysis Date = 07/22/05 Pct Recovery = 106% Analysis Date = 07/05/05 Pct Recovery = 106% Analysis Date = 07/05/05 Pct Recovery = 106% Analysis Date = 06/17/05 Pct Recovery = 106% Analysis Date = 06/17/05 Pct Recovery = 106% Analysis Date = 05/30/05 Pct Recovery = 106% Analysis Date = 05/30/05 Pct Recovery = 106% Analysis Date = 05/13/05 Pct Recovery = 106% Analysis Date = 05/13/05 Pct Recovery = 106% Analysis Date = 04/25/05 Pct Recovery = 106% Analysis Date = 04/25/05 Pct Recovery = 106% Analysis Date = 04/07/05 Pct Recovery = 106% Analysis Date = 04/07/05 Pct Recovery = 106% Analysis Date = 03/21/05 Pct Recovery = 106% Analysis Date = 03/21/05 Pct Recovery = 106% Analysis Date = 03/03/05 Pct Recovery = 106% Analysis Date = 03/03/05 Pct Recovery = 106% Analysis Date = 02/14/05 Pct Recovery = 106% Analysis Date = 02/14/05 Pct Recovery = 106% Analysis Date = 01/27/05 Pct Recovery = 106% Analysis Date = 01/27/05 Pct Recovery = 106% Analysis Date = 01/09/05 Pct Recovery = 106% Analysis Date = 01/09/05 Pct Recovery = 106% Analysis Date = 12/23/04 Pct Recovery = 106% Analysis Date = 12/23/04 Pct Recovery = 106% Analysis Date = 12/05/04 Pct Recovery = 106% Analysis Date = 12/05/04 Pct Recovery = 106% Analysis Date = 11/17/04 Pct Recovery = 106% Analysis Date = 11/17/04 Pct Recovery = 106% Analysis Date = 10/31/04 Pct Recovery = 106% Analysis Date = 10/31/04 Pct Recovery = 106% Analysis Date = 10/13/04 Pct Recovery = 106% Analysis Date = 10/13/04 Pct Recovery = 106% Analysis Date = 09/25/04 Pct Recovery = 106% Analysis Date = 09/25/04 Pct Recovery = 106% Analysis Date = 09/08/04 Pct Recovery = 106% Analysis Date = 09/08/04 Pct Recovery = 106% Analysis Date = 08/21/04 Pct Recovery = 106% Analysis Date = 08/21/04 Pct Recovery = 106% Analysis Date = 08/03/04 Pct Recovery = 106% Analysis Date = 08/03/04 Pct Recovery = 106% Analysis Date = 07/17/04 Pct Recovery = 106% Analysis Date = 07/17/04 Pct Recovery = 106% Analysis Date = 06/29/04 Pct Recovery = 106% Analysis Date = 06/29/04 Pct Recovery = 106% Analysis Date = 06/12/04 Pct Recovery = 106% Analysis Date = 06/12/04 Pct Recovery = 106% Analysis Date = 05/25/04 Pct Recovery = 106% Analysis Date = 05/25/04 Pct Recovery = 106% Analysis Date = 05/07/04 Pct Recovery = 107% Analysis Date = 05/07/04 Pct Recovery = 107% Analysis Date = 04/20/04 Pct Recovery = 107% Analysis Date = 04/20/04 Pct Recovery = 107% Analysis Date = 04/02/04 Pct Recovery = 107% Analysis Date = 04/02/04 Pct Recovery = 107% Analysis Date = 03/15/04 Pct Recovery = 107% Analysis Date = 03/15/04 Pct Recovery = 107% Analysis Date = 02/27/04 Pct Recovery = 107% Analysis Date = 02/27/04 Pct Recovery = 107% Analysis Date = 02/09/04 Pct Recovery = 107% Analysis Date = 02/09/04 Pct Recovery = 107% Analysis Date = 01/22/04 Pct Recovery = 107% Analysis Date = 01/22/04 Pct Recovery = 107% Analysis Date = 01/05/04 Pct Recovery = 107% Analysis Date = 01/05/04 Pct Recovery = 107% Analysis Date = 12/18/03 Pct Recovery = 107% Analysis Date = 12/18/03 Pct Recovery = 107% Analysis Date = 11/30/03 Pct Recovery = 107% Analysis Date = 11/30/03 Pct Recovery = 107% Analysis Date = 11/13/03 Pct Recovery = 107% Analysis Date = 11/13/03 Pct Recovery = 107% Analysis Date = 10/26/03 Pct Recovery = 107% Analysis Date = 10/26/03 Pct Recovery = 107% Analysis Date = 10/09/03 Pct Recovery = 107% Y = 1.5 Y = 0.5 Y = 1
The SGPlot Procedure

Plotted Points Statistics
TERT-BUTYL METHYL ETHER (MTBE)

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 6 106% 7% 106% 7%
>= Reporting Level 96 106% 14% 105% 12%
Total 102 106% 13% 105% 11%

Sample Statistics
TERT-BUTYL METHYL ETHER (MTBE)

Characteristic N % % Basis
Plotted 102 100% Spiked
Estimated Values 5 5% Spiked
Deleted Values 1 1% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 103 .  
False Negatives 0 0% 0 out of 102
Not Spiked 90 .  
False Positives 0 0% 0 out of 90