The Minnesota Department (MDH) is proposing amendments to the Health Risk Limits (HRLs) Rules and to adopt new and updated human health-based water guidance values into rule. The chemicals proposed for amendment include herbicides and other pesticides, polyaromatic hydrocarbons (PAH) and volatile organic compounds (VOC). Below is a listing of chemicals MDH is considering in its rule revision:

Chemical Name Previously adopted values in HRL Rule?
Acenaphthene Yes
Acetochlor Yes
Acetochlor ESA Yes
Acetochlor OXA Yes
Alachlor Yes
Chloroform Yes
Clothianidin No
Cyanazine Yes
cis-1,2-Dichloroethene Yes
2,4-Dichlorophenoxyacetic acid (2,4-D) Yes
Dieldrin Yes
Dinoseb No
S-Ethyl-N,N-dipropylthiocarbamate (EPTC) Yes
Fluoranthene Yes
Perfluorobutyrate (PFBA) Yes
Perfluorooctanoic Acid (PFOA) and Salts Yes
Perfluorooctane Sulfonate (PFOS) and Salts Yes
Pyrene Yes
Tetrahydrofuran No
Thiamethoxam No
1,1,1-Trichloroethane Yes
Vinyl Chloride Yes

MDH will accept written comments on the proposed rules amendments through Wednesday, February 21, 2018.

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