BQS OBSP Determination:
M- AND P-XYLENE
METHOD: 4054 , TESTIDCODE: 85795GCM66
Open Data Set

 Analysis Date = 11/15/00 
 SpikeMix = NSI 053100-01: 25 µl 
 Pct Recovery = 110%  Analysis Date = 08/16/00 
 SpikeMix = NSI 053100-01: 25 µl 
 Pct Recovery = 94%  Y = 1.5  Y = 0.5  Y = 1
The SGPlot Procedure

Plotted Points Statistics
M- AND P-XYLENE

Spike Level N Mean Std-Dev. Median F_Pseudo
>= Reporting Level 2 102% 11% 102% 12%
Total 2 102% 11% 102% 12%

Sample Statistics
M- AND P-XYLENE

Characteristic N % % Basis
Plotted 2 100% Spiked
Estimated Values 0 0% Spiked
Deleted Values 0 0% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 2 .  
False Negatives 0 0% 0 out of 2
Not Spiked 34 .  
False Positives 16 47% 16 out of 34