New Jersey VOC limits

[JonKlar]

I just got a memo that my lab is going to try and get EPA testing certification from NJ for groundwater VOCs and the PQL listed (am I wrong to assume this is the quantitation limit?) for 1,2-dibromoethane (EDB) is .03 ppb. Am I crazy or is this unreasonably low?

[Steve Reimer]

0.03ppb is easy using method 504 (hexane extraction, GC/ECD analysis), We used to report to 0.01.
If you are trying it by 524.3 SIM, it may be possible but I would want the cleanest system possible.
The reason for the low level is that the drinking water mcl is 0.05 ug/L

[JonKlar]

ECD would be ideal, unfortunately Im stuck using GC/MS. We run the 8260 method for all of our VOCs and our MDLs seem to cap out around 0.2ppb

[Bigbear]

Too bad, if no ECD you will have to go with 524.3. In my region ( EPA 1) I would bet I would have to develop the whole method and not just the sim for EDB/DBCP!