BQS OBSP Determination:
1,2-DIBROMOETHANE
METHOD: 4054 , TESTIDCODE: 77651GCM66
DATES: 02/23/00 - 11/15/00

Expected Conc. = 0.5 Median Pct Recovery = 101% Expected Conc. = 0.5 Median Pct Recovery = 101% Expected Conc. = 0.5 Median Pct Recovery = 101% Expected Conc. = 0.27 Median Pct Recovery = 101% Expected Conc. = 0.27 Median Pct Recovery = 101% Expected Conc. = 0.27 Median Pct Recovery = 101% Expected Conc. = 0.27 Median Pct Recovery = 101% Expected Conc. = 0.27 Median Pct Recovery = 101% Expected Conc. = 0.27 Median Pct Recovery = 101% Expected Conc. = 0.16 Median Pct Recovery = 101% Expected Conc. = 0.16 Median Pct Recovery = 101% Expected Conc. = 0.16 Median Pct Recovery = 101% Expected Conc. = 0.16 Median Pct Recovery = 101% Expected Conc. = 0.16 Median Pct Recovery = 101% Analysis Date = 11/15/00 SpikeMix = NSI 053100-01: 25 µl Pct Recovery = 101% Analysis Date = 08/16/00 SpikeMix = NSI 053100-01: 25 µl Pct Recovery = 101% Analysis Date = 10/04/00 SpikeMix = Restek 57150: 30 µl Pct Recovery = 92% Analysis Date = 07/25/00 SpikeMix = Restek 57150: 30 µl Pct Recovery = 87% Analysis Date = 03/23/00 SpikeMix = Restek 57150: 30 µl Pct Recovery = 93% Analysis Date = 06/15/00 SpikeMix = NSI 121699: 20 µl Pct Recovery = 104% Analysis Date = 04/27/00 SpikeMix = NSI 121699: 20 µl Pct Recovery = 119% Analysis Date = 02/23/00 SpikeMix = NSI 121699: 20 µl Pct Recovery = 105% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Median Pct Recovery = 101% Y = 1
The SGPlot Procedure