What analytical methods should I use to determine compliance with the Ground Water Remediation Standards?
The analytical methods used to determine compliance with the Ground Water Remediation Standards must be NJDEP certified analytical methods that are capable of quantifying constituent concentrations in water at or below the standard that is appropriate for the ground water classification (See N.J.A.C. 7:18). It may be necessary to use more than one analytical method to analyze a given class of contaminants (e.g., volatile organic contaminants) to determine compliance with the Ground Water Remediation Standards. In addition, because the Department adopted lower standards for some constituents in November 2005, it may be necessary to modify analytical methods or use different analytical methods than were used in the past to determine compliance. For example, previously, USEPA method 625 or EPA method SW-846 was commonly used to determine compliance with the Ground Water Remediation Standards for polycyclic aromatic hydrocarbons (PAHs). Because of the lowering of some of these standards, i
