Changes To Minnesota Water Based Health Risk Limits

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.