A known or suspected release must be investigated by the responsible person to determine the extent and degree of contamination. The investigation must have the approval of the department prior to implementation and shall include, at a minimum:

1. (1) Monitoring locations, sampling schedule, and analysis results submission schedule;
2. (2) A pathway and fate analysis to determine impacts to human health and the environment;
3. (3) A risk assessment of the impacts of the petroleum products, including both free-floating and dissolved phases of the release;
4. (4) A determination of the vertical and horizontal extent of the contamination;
5. (5) Site-specific hydrological and geological data;
6. (6) The relationship and influence of the site-specific hydrological data to the petroleum products movement; and

7. (7) Other pertinent data that the department determines is necessary to define a release.

   All results and information obtained from a release investigation shall be provided to the department for review within a time schedule established by the department for the release.

Source: 15 SDR 72, effective November 17, 1988; 17 SDR 94, effective January 6, 1991.

General Authority: SDCL 34A-13-5.

Law Implemented: SDCL 34A-13-5 , 34A-13-13.