1. (a) The responsible party shall conduct an initial response action at a site following any event described in Env-Or 605.01(a)(2) or Env-Or 605.01(a)(4), or a discharge of a regulated contaminant or groundwater quality violation in order to:

   1. (1) Reduce risks to human health and the environment; and
   2. (2) Reduce potential future costs of response actions by remediating or containing contamination until such a time as a more comprehensive response action conducted in accordance with Env-Or 606 can be implemented.

2. (b) An initial response action shall include such assessments, containment measures, or removal actions necessary to prevent, eliminate, or minimize damage to human health and the environment, as applicable, such as:

   1. (1) NAPL recovery;
   2. (2) Groundwater treatment and recovery;
   3. (3) Soil excavation and disposal;
   4. (4) Soil vapor extraction;
   5. (5) Receptor surveys;
   6. (6) Vapor abatement measures; and
   7. (7) Collection and analysis of soil, sediment, surface water, groundwater, soil gas, or indoor air samples.
3. (c) The responsible party shall notify the department and others of the initial response action in accordance with Env-Or 604 and Env-Or 610.

Source. (See Revision Note at chapter heading for Env-Or 600) #8812, eff 2-1-07; ss by #10831, eff 6-1-15; ss by #14419, eff 11-4-25, EXPIRES: 11-4-35