1. (a) Unless the department determines that final confirmation sampling is not needed to meet the requirements of the site cleanup rules, a responsible person shall submit a sampling and analysis plan for approval under 18 AAC 75.360, and after implementing the plan, shall submit the analytical sampling results collected to the department. If approved in the sampling and analysis plan, sample collection for soil or water may be performed by a qualified sampler when a qualified environmental professional is not available. Based on the results of the analyses, a responsible person shall demonstrate compliance with the site cleanup rules.
2. (b) A responsible person and the owner or operator of an offsite or portable treatment facility under 18 AAC 75.365 shall ensure that the collection, interpretation, and reporting of data, and the required sampling and analysis is conducted or supervised by a qualified environmental professional.

3. (c) If a hazardous substance is suspected at the site because of empirical evidence or prior analysis, but is not detected or is detected at a concentration below the limit of quantitation, and the limit of quantitation is higher than the cleanup level for that substance,

   1. (1) the department will determine the responsible person to have attained the cleanup level if the limit of quantitation or limit of detection is equal to or no greater than the limit of quantitation or limit of detection achieved by a laboratory approved for that method by the department under 18 AAC 78.800 - 18 AAC 78.815;

   2. (2) if the department determines that additional action is necessary to ensure protection of human health, safety, or welfare, or of the environment, the department will require one or more of the following:

      1. (A) use of a surrogate measure to estimate the concentration of the hazardous substance;
      2. (B) use of a specialized sample collection or analytical method to improve the accuracy, precision, limit of detection, or limit of quantitation for the hazardous substances at the site; or
      3. (C) monitoring to ensure that the concentration of the hazardous substance does not exceed quantitatable levels; and
   3. (3) if the department determines that an improved analytical method or other responsive action is necessary to ensure protection of human health, safety, or welfare, or of the environment, the department will, before site closure and if the site is in a monitoring stage, periodically consider whether improved analytical methods should be used at the site and will require the use of an improved analytical method or other responsive action.
4. (d) Analysis for petroleum contamination must follow the applicable Alaska methods for petroleum hydrocarbons referred to in Table 1 of Chapter 2 of the Underground Storage Tanks Procedures Manual, dated March 22, 2017. Table 1 of Chapter 2 and Appendices C and D of the Underground Storage Tanks Procedures Manual, dated March 22, 2017 are adopted by reference.
5. (e) Laboratory analysis under the site cleanup rules must be performed by a laboratory approved by the department under 18 AAC 78.800 - 18 AAC 78.815.

(Eff. 1/22/99, Register 149; am 8/27/2000, Register 155; am 1/30/2003, Register 165; am 6/17/2015, Register 214; am 9/29/2018, Register 227)

Authority: AS 44.46.025, AS 46.03.710, AS 46.04.070, AS 46.03.020, AS 46.03.745, AS 46.09.020, AS 46.03.050, AS 46.04.020