8 CAR § 21-308. Site-specific criteria

In establishing criteria: (1) Establish numerical criteria values based on: (A) 304(a) Guidance; or (B) 304(a) Guidance modified to reflect site conditions (i.e., Water Effects Ratio); or (C) Other scientifically defensible methods. (2) Establish narrative criteria or criteria based upon biomonitoring methods where numerical criteria cannot be established or to supplement numerical criteria.