ARSD 74:56:05:06. Tier 1 assessments

The responsible person must conduct Tier 1 assessments. A Tier 1 assessment is a risk-based analysis to develop values that are not site-specific for direct and indirect exposure pathways utilizing conservative exposure factors and fate and transport for potential pathways. Data from the Tier 1 assessment must be compared to the criteria established in Table 1 in § 74:56:05:07.