Health Risk Limit Rules for Groundwater
Statement of Need and Reasonableness (SONAR)
The Statement of Need and Reasonableness (SONAR) contains information about the proposed rules. Included is an explanation of why MDH is considering rules amendments to the Health Risk Limits Rules and detailed information about the guidance values.
A copy of the SONAR can be obtained below. If you have difficulty accessing the document, please contact us.
Document by sections:
Appendices A through D (PDF: 392KB/34 pages)
Glossary of Terms Used in Risk Assessment, Bibliography,Concepts used in MDH-derived HRLs, and Selection of 2012/2013 contaminants
Appendix E, (first half) (PDF: 503KB/54 pages)
Summary sheets for chemicals 6-Acetyl-1,1,2,4,4,7 hexamethyltetraline (AHTN or Tonalide) through N,N-Diethyl-3-methylbenzamide or N,N-Diethyl-meta-toluamide (DEET) in alphabetical order.
Appendix E, (second half) (PDF: 410KB/43 pages)
Summary sheets for chemicals 1,4-Dioxane through Tris (2-chloroethyl) phosphate (TCEP) in alphabetical order.