Health Risk Limit Rules for Groundwater
2012/2013 Amendment - Chemicals with Guidance Values in Proposed Rules Amendments

Health-based guidance values (HBVs) for the twelve chemicals below are included in the current proposed amendments to the Health Risk Limit (HRL) Rules (Minnesota Rules Parts 4717.7860 and 4717.7500). (See Proposed Rules: (PDF: 281KB/38 pages).

The proposed HRL values are identical to the current HBVs. The current HBVs, in addition to a toxicological summary sheet, can be viewed for each chemical by clicking on the links below.

Chemical Abstract Service
(CAS) Number

Chemical Name

21145-77-7 or 1506-02-1

6-Acetyl-1,1,2,4,4,7 hexamethyltetraline (AHTN or Tonalide)

298-46-4

Carbamazepine

56-23-5

Carbon tetrachloride

107-06-2

1,2 -Dichloroethane

156-60-5

trans -1,2-Dichloroethene

134-62-3

N,N-Diethyl-3-methylbenzamide or N,N-Diethyl-meta-toluamide (DEET)

123-91-1

1,4-Dioxane

21087-64-9

Metribuzin

91-20-3

Naphthalene

120-82-1

1,2,4-Trichlorobenzene

96-18-4

1,2,3-Trichloropropane

115-96-8

Tris (2-chloroethyl) phosphate

Updated Monday, 11-Mar-2013 10:42:34 CDT