Methods and PQLs - Organics

Sample extractions and analyses conducted by the Organic Chemistry Branch follow EPA methods, including EPA's SW-846. 

The Practical Quantitation Limit (PQL) is defined as "the lowest concentration that can be reliably achieved within specified limits of precision and accuracy during routine laboratory operating conditions." PQLs are subjectively set at some multiple of typical Method Detection Limits (MDLs) for reagent water (generally 3 to 5 times the MDL). The PQL for a procedure may also be defined by a reporting limit or minimum limit (ML) specified by the analytical method. The established PQL for a procedure serves as a reliable and routinely achievable reporting limit for a biological or chemical parameter. 

Lists of Analytical Methods and PQL's for Organic Analytes (click on link to open):
Acid Herbicides OrganoChlorine Pesticides & PCBs OrganoNitrogen Pesticides
OrganoPhosphorous Pesticides Semivolatile Organics (SVOA) Volatile Organics (VOA)

NOTE: Unless otherwise noted, the PQL's and methods are for water samples only.

Data Qualifier Codes used by the WSS Chemistry Laboratory updated 6/25/2015