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Minnesota Administrative Rules

4717.7860 HEALTH RISK LIMITS TABLE.

Subpart 1.

Generally.

This table lists the health risk limits derived from methods specified in parts 4717.7830, 4717.7840, and 4717.7850. For each chemical, this table specifies:

A.

the chemical name;

B.

the CAS number;

C.

the year the HRL was adopted;

D.

the volatility classification;

E.

any noncancer HRL;

F.

any cancer HRL;

G.

the RfD and RSC used in the derivation of any noncancer HRL;

H.

the slope factor and any ADAF or AFlifetime used in the derivation of any cancer HRL;

I.

the intake rate used in the derivation of any noncancer or cancer HRL; and

J.

the health endpoints.

Subp. 2.

Explanation of table in this part.

A.

"-" symbol means not relevant.

B.

"NA" means not applicable.

C.

"ND" means not derived due to absence or paucity of toxicity information.

D.

"None" means not applicable for inclusion in the health risk index.

E.

The following explanations in subitems (1) to (3) apply where noted:

(1)

The acute HRL value is less than the calculated HRL. To be protective of acute exposures, the HRL is set equal to the acute HRL value.

(2)

The short-term HRL value is less than the calculated HRL. To be protective of short-term exposures, the HRL is set equal to the short-term HRL value.

(3)

The subchronic HRL value is less than the calculated HRL. To be protective of subchronic exposures, the HRL is set equal to the subchronic HRL value.

Subp. 3.

Acetochlor.

CAS number: 34256-82-1
Year Adopted: 2009
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 40 40 40 (2) 9 NA
RfD (mg/kg-day) 0.021 0.021 (2) 0.002 --
RSC 0.5 0.5 (2) 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) 0.289 0.289 (2) 0.043 --
Endpoints developmental developmental developmental hepatic (liver) system, male reproductive system, nervous system, renal (kidney) system, respiratory system --

Subp. 3a.

Acetochlor ESA.

CAS number: 187022-11-3
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 600 600 300 NA
RfD (mg/kg-day) -- 0.37 0.23 0.075 --
RSC -- 0.5 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 0.077 0.043 --
Endpoints -- thyroid (E) thyroid (E) thyroid (E) --

Subp. 3b.

Acetochlor OXA.

CAS number: 184992-44-4
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 200 200 100 NA
RfD (mg/kg-day) -- 0.12 0.077 0.026 --
RSC -- 0.5 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 0.077 0.043 --
Endpoints -- thyroid (E) thyroid (E) thyroid (E) --

Subp. 3c.

Acetone.

CAS number: 67-64-1
Year Adopted: 2011
Volatility: Moderate
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 9,000 8,000 4,000 NA
RfD (mg/kg-day) -- 5.0 3.0 0.90 --
RSC -- 0.5 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 0.077 0.043 --
Endpoints -- renal (kidney) system renal (kidney) system, hematological (blood) system renal (kidney) system, hematological (blood) system --

Subp. 3d.

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

CAS number: 21145-77-7 or 1506-02-1
Year Adopted: 2013
Volatility: Moderate
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 100 30 20 NA
RfD (mg/kg-day) -- 0.070 0.011 0.0037 --
RSC -- 0.5 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 0.077 0.043 --
Endpoints -- hepatic (liver) system hepatic (liver) system hepatic (liver) system --

Subp. 4.

Alachlor.

CAS number: 15972-60-8
Year Adopted: 2009
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 200 30 5 NA
RfD (mg/kg-day) -- 0.1 0.01 0.001 --
RSC -- 0.5 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 0.077 0.043 --
Endpoints -- renal (kidney) system hepatic (liver) system, hematological (blood) system hepatic (liver) system, hematological (blood) system --

Subp. 5.

Atrazine.

CAS number: 1912-24-9
Year Adopted: 2009
Volatility: Nonvolatile
MCL-based HRL: 3 µg/L

Subp. 6.

Benzene.

CAS number: 71-43-2
Year Adopted: 2009
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 10 10 3 3 (3) 2
RfD (mg/kg-day) 0.015 0.014 0.0013 (3) --
RSC 0.2 0.2 0.2 (3) --
SF (per mg/kg-day) -- -- -- -- 0.055
ADAF -- -- -- -- 10 (ADAF<2)
3 (ADAF2 to <16)
1 (ADAF16+)
Intake Rate 0.289 0.289 0.077 (3) 0.137 (<2)
(L/kg-day) 0.047 (2 to <16)
0.039 (16+)
Endpoints develop-
mental
hemato-
logical (blood) system, immune system
hemato-
logical (blood) system, immune system
hemato-
logical (blood) system, immune system
cancer

Subp. 6a.

Carbamazepine.

CAS number: 298-46-4
Year Adopted: 2013
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 40 40 40 (2) 40 (2) NA
RfD (mg/kg-day) 0.013 0.013 (2) (2) --
RSC 0.8 0.8 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate 0.289 0.289 (2) (2) --
(L/kg-day)
Endpoints develop-
mental, nervous system
develop-
mental, hematological (blood) system, hepatic (liver) system, immune system, nervous system, male reproductive system (E), female reproductive system (E), thyroid (E)
develop-
mental, hematological (blood) system, hepatic (liver) system, immune system, nervous system, male reproductive system (E), female reproductive system (E), thyroid (E)
develop-
mental, hematological (blood) system, hepatic (liver) system, immune system, nervous system, male reproductive system (E), female reproductive system (E), thyroid (E)
--

Subp. 6b.

Carbon tetrachloride.

CAS number: 56-23-5
Year Adopted: 2013
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 100 3 3 (2) 3 (2) 1
RfD (mg/kg-day) 0.18 0.0037 (2) (2) --
RSC 0.2 0.2 (2) (2) --
SF (per mg/kg-day) -- -- -- -- 0.07
ADAF or AFlifetime -- -- -- -- 10 (ADAF<2)
3 (ADAF2 to <16)
1 (ADAF16+)
Intake Rate (L/kg-day) 0.289 0.289 (2) (2) 0.137 (<2)
0.047 (2 to <16)
0.039 (16+)
Endpoints develop-
mental, hepatic (liver) system
hepatic (liver) system hepatic (liver) system hepatic (liver) system cancer

Subp. 7.

Chloroform.

CAS number: 67-66-3
Year Adopted: 2009
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 30 30 (2) 30 (2) NA
RfD (mg/kg-day) -- 0.05 (2) (2) --
RSC -- 0.2 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) (2) --
Endpoints -- developmental, hepatic (liver) system, immune system developmental, hepatic (liver) system, immune system, male reproductive system developmental, hepatic (liver) system, immune system, male reproductive system --

Subp. 8.

Cyanazine.

CAS number: 21725-46-2
Year Adopted: 2009
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 2 2 2 1 NA
RfD (mg/kg-day) 0.001 0.001 0.00063 0.00026 --
RSC 0.5 0.5 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) 0.289 0.289 0.077 0.043 --
Endpoints developmental developmental hepatic (liver) system, renal (kidney) system None --

Subp. 8a.

Dichlorodifluoromethane.

CAS number: 75-71-8
Year Adopted: 2011
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND ND 700 NA
RfD (mg/kg-day) -- -- -- 0.15 --
RSC -- -- -- 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- -- 0.043 --
Endpoints -- -- -- None --

Subp. 8b.

1,2-Dichloroethane.

CAS number: 107-06-2
Year Adopted: 2013
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 200 200 (2) 60 1
RfD (mg/kg-day) -- 0.23 (2) 0.012 --
RSC -- 0.2 (2) 0.2 --
SF (per mg/kg-day) -- -- -- -- 0.091
ADAF or AFlifetime -- -- -- -- 10 (ADAF<2)
3 (ADAF2 to <16)
1 (ADAF16+)
Intake Rate (L/kg-day) -- 0.289 (2) 0.043 0.137 (<2)
0.047 (2 to <16)
0.039 (16+)
Endpoints -- hepatic (liver) system hepatic (liver) system renal (kidney) system, hepatic (liver) system cancer

Subp. 8c.

trans-1,2-Dichloroethene.

CAS number: 156-60-5
Year Adopted: 2013
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND 200 40 NA
RfD (mg/kg-day) -- -- 0.091 0.0091 --
RSC -- -- 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- 0.077 0.043 --
Endpoints -- -- immune system immune system --

Subp. 8d.

1,1-Dichloroethylene.

CAS number: 75-35-4
Year Adopted: 2011
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND 200 200 NA
RfD (mg/kg-day) -- -- 0.090 0.046 --
RSC -- -- 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- 0.077 0.043 --
Endpoints -- -- hepatic (liver) system hepatic (liver) system --

Subp. 9.

cis 1,2-Dichloroethylene.

CAS number: 156-59-2
Year Adopted: 2009
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 70 70 (2) 50 NA
RfD (mg/kg-day) -- 0.097 (2) 0.011 --
RSC -- 0.2 (2) 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) 0.043 --
Endpoints -- hematological (blood) system hematological (blood) system hematological (blood) system --

Subp. 10.

Dichloromethane.

CAS number: 75-09-2
Year Adopted: 2009
Volatility: High
MCL-based HRL: 5 µg/L

Subp. 11.

Dieldrin.

CAS number: 60-57-1
Year Adopted: 2009
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 0.2 0.2 0.2 (2) 0.2 0.006
RfD (mg/kg-day) 0.0001 0.0001 (2) 0.00005 --
RSC 0.5 0.5 (2) 0.2 --
SF (per mg/kg-day) -- -- -- -- 16
AFlifetime -- -- -- -- 2.5
Intake Rate (L/kg-day) 0.289 0.289 (2) 0.043 0.043
Endpoints developmental developmental, immune system, nervous system developmental, immune system, nervous system hepatic (liver) system, nervous system cancer

Subp. 11a.

N,N-Diethyl-meta-toluamide (DEET).

CAS number: 134-62-3
Year Adopted: 2013
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 200 200 (2) 200 (2) NA
RfD (mg/kg-day) -- 0.23 (2) (2) --
RSC -- 0.2 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) (2) --
Endpoints -- developmental, nervous system developmental, nervous system developmental, nervous system --

Subp. 11b.

1,4-Dioxane.

CAS number: 123-91-1
Year Adopted: 2013
Volatility: Low
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND 300 100 1
RfD (mg/kg-day) -- -- 0.12 0.025 --
RSC -- -- 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- 0.1
ADAF or AFlifetime -- -- -- -- 10 (ADAF<2)
3 (ADAF2 to <16)
1 (ADAF16+)
Intake Rate -- -- 0.077 0.043 0.137 (<2)
(L/kg-day) 0.047 (2 to <16)
0.039 (16+)
Endpoints -- -- hepatic (liver) system, renal (kidney) system, respiratory system hepatic (liver) system, renal (kidney) system, respiratory system cancer

Subp. 12.

Di-(2-ethylhexyl) phthalate.

CAS number: 117-81-7
Year Adopted: 2009
Volatility: Moderate
MCL-based HRL: 6 µg/L

Subp. 12a.

Ethylbenzene.

CAS number: 100-41-4
Year Adopted: 2011
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 50 50 (2) 50 (2) NA
RfD (mg/kg-day) -- 0.075 (2) (2) --
RSC -- 0.2 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) (2) --
Endpoints -- hepatic (liver) system, renal (kidney) system hepatic (liver) system, renal (kidney) system hepatic (liver) system, renal (kidney) system --

Subp. 12b.

Ethylene glycol.

CAS number: 107-21-1
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 4,000 4,000 2,000 2,000 NA
RfD (mg/kg-day) 0.76 0.76 0.72 0.50 --
RSC 0.2 0.2 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) 0.043 0.043 0.077 0.043 --
Endpoints developmental developmental renal (kidney) system, developmental renal (kidney) system, developmental --

Subp. 12c.

Metolachlor and S-Metolachlor.

CAS number: 51218-45-2; 87392-12-9
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 400 400 300 300 (3) NA
RfD (mg/kg-day) 0.24 0.24 0.097 (3) --
RSC 0.5 0.5 0.2 (3) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) 0.289 0.289 0.077 (3) --
Endpoints developmental developmental none none --

Subp. 12d.

Metolachlor ESA.

CAS number: 171118-09-5
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND 4,000 800 NA
RfD (mg/kg-day) -- -- 1.7 0.17 --
RSC -- -- 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- 0.077 0.043 --
Endpoints -- -- hepatic (liver) system hepatic (liver) system --

Subp. 12e.

Metolachlor OXA.

CAS number: 152019-73-3
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 3,000 3,000 (2) 800 NA
RfD (mg/kg-day) -- 1.7 (2) 0.17 --
RSC -- 0.5 (2) 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) 0.043 --
Endpoints -- none none none --

Subp. 12f.

Metribuzin.

CAS number: 21087-64-9
Year Adopted: 2013
Volatility: Low
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 30 10 10 (2) 10 (2) NA
RfD (mg/kg-day) 0.016 0.006 (2) (2) --
RSC 0.5 0.5 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) 0.289 0.289 (2) (2) --
Endpoints developmental, nervous system thyroid (E) thyroid (E) thyroid (E) --

Subp. 12g.

Naphthalene.

CAS number: 91-20-3
Year Adopted: 2013
Volatility: Moderate
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 70 70 70 (2) 70 NA
RfD (mg/kg-day) 0.038 0.038 (2) 0.016 --
RSC 0.5 0.5 (2) 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) 0.289 0.289 (2) 0.043 --
Endpoints nervous system nervous system nervous system nervous system, spleen --

Subp. 13.

Nitrate (as N).

CAS number: 14797-55-8
Year Adopted: 2009
Volatility: Nonvolatile
MCL-based HRL: 10,000 µg/L

Subp. 14.

Pentachlorophenol.

CAS number: 87-86-5
Year Adopted: 2009
Volatility: Nonvolatile
MCL-based HRL: 1 µg/L

Subp. 14a.

Perfluorobutane sulfonate (PFBS).

CAS number: 375-73-5
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND 9 7 NA
RfD (mg/kg-day) -- -- 0.0042 0.0014 --
RSC -- -- 0.5 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- 0.245 0.043 --
Endpoints -- -- hepatic (liver) system, hematological (blood) system, renal (kidney) system hepatic (liver) system, hematological (blood) system, renal (kidney) system --

Subp. 14b.

Perfluorobutyrate (PFBA).

CAS number: 375-22-4
Year Adopted: 2011
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 7 7 (2) 7 (2) NA
RfD (mg/kg-day) -- 0.0038 (2) (2) --
RSC -- 0.5 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) (2) --
Endpoints -- hepatic (liver) system, thyroid (E) hepatic (liver) system, thyroid (E) hepatic (liver) system, thyroid (E) --

Subp. 15.

Perfluorooctane sulfonate (PFOS) and salts.

CAS number: 1763-23-1; 29081-56-9; 2795-39-3; 70225-14-8; and 29457-72-5
Year Adopted: 2009
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND ND 0.3 NA
RfD (mg/kg-day) -- -- -- 0.00008 --
RSC -- -- -- 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- -- 0.049 --
Endpoints -- -- -- developmental,
hepatic (liver) system, thyroid (E)
--

Subp. 16.

Perfluorooctanoic acid (PFOA) and salts.

CAS number: 335-67-1; 3825-26-1; 2395-00-8; 335-93-3; and 335-95-5
Year Adopted: 2009
Volatility: Nonvolatile
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND ND 0.3 NA
RfD (mg/kg-day) -- -- -- 0.000077 --
RSC -- -- -- 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- -- 0.053 --
Endpoints -- -- -- developmental, hepatic (liver) system, immune system --

Subp. 17.

Simazine.

CAS number: 122-34-9
Year Adopted: 2009
Volatility: Nonvolatile
MCL-based HRL: 4 µg/L

Subp. 18.

1,1,2,2-Tetrachloroethylene.

CAS number: 127-18-4
Year Adopted: 2009
Volatility: High
MCL-based HRL: 5 µg/L

Subp. 18a.

Toluene.

CAS number: 108-88-3
Year Adopted: 2011
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 200 200 (2) 200 (2) NA
RfD (mg/kg-day) -- 0.22 (2) (2) --
RSC -- 0.2 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) (2) --
Endpoints -- immune system, nervous system immune system, nervous system immune system, nervous system --

Subp. 18b.

1,2,4-Trichlorobenezene.

CAS number: 120-82-1
Year Adopted: 2013
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 100 100 (2) 100 4
RfD (mg/kg-day) -- 0.17 (2) 0.021 --
RSC -- 0.2 (2) 0.2 --
SF (per mg/kg-day) -- -- -- -- 0.029
ADAF or AFlifetime -- -- -- -- 10 (ADAF<2)
3 (ADAF2 to <16)
1 (ADAF16+)
Intake Rate -- 0.289 (2) 0.043 0.137 (<2)
(L/kg-day) 0.047 (2 to <16)
0.039 (16+)
Endpoints -- hepatic (liver) system, adrenal (E), hemato-
logical (blood) system
hepatic (liver) system, adrenal (E), hemato-
logical (blood) system
hepatic (liver) system, adrenal (E), renal (kidney) system cancer

Subp. 19.

1,1,1-Trichloroethane.

CAS number: 71-55-6
Year Adopted: 2009
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND 20,000 9,000 NA
RfD (mg/kg-day) -- -- 7 2 --
RSC -- -- 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- -- 0.077 0.043 --
Endpoints -- -- hepatic (liver) system, male reproductive system hepatic (liver) system, male reproductive system --

Subp. 20.

1,1,2-Trichloroethylene (TCE).

CAS number: 79-01-6
Year Adopted: 2009
Volatility: High
MCL-based HRL: 5 µg/L

Subp. 21.

2(2,4,5-Trichlorophenoxy)propionic acid (2,4,5-TP or Silvex).

CAS number: 93-72-1
Year Adopted: 2009
Volatility: Nonvolatile
MCL-based HRL: 50 µg/L

Subp. 21a.

1,2,3-Trichloropropane.

CAS number: 96-18-4
Year Adopted: 2013
Volatility: Moderate
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 7 7 7 (2) 7 (2) 0.003
RfD (mg/kg-day) 0.0042 0.0042 (2) (2) --
RSC 0.5 0.5 (2) (2) --
SF (per mg/kg-day) -- -- -- -- 30
ADAF or AFlifetime -- -- -- -- 10 (ADAF<2)
3 (ADAF2 to <16)
1 (ADAF16+)
Intake Rate 0.289 0.289 (2) (2) 0.137 (<2)
(L/kg-day) 0.047 (2 to <16)
0.039 (16+)
Endpoints develop-
mental
develop-
mental
develop-
mental
develop-
mental
cancer

Subp. 22.

1,3,5-Trimethylbenzene.

CAS number: 108-67-8
Year Adopted: 2009
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 100 100 (2) 100 (2) NA
RfD (mg/kg-day) ND 0.14 (2) (2) --
RSC -- 0.2 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) -- 0.289 (2) (2) --
Endpoints -- hepatic (liver) system hepatic (liver) system, renal (kidney) system hepatic (liver) system, renal (kidney) system --

Subp. 22a.

Tris(2-chloroethyl) phosphate.

CAS number: 115-96-8
Year Adopted: 2013
Volatility: Low
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND 300 200 200 (3) 5
RfD (mg/kg-day) -- 0.15 0.068 (3) --
RSC -- 0.5 0.2 (3) --
SF (per mg/kg-day) -- -- -- -- 0.02
ADAF or AFlifetime -- -- -- -- 10 (ADAF<2)
3 (ADAF2 to <16)
1 (ADAF16+)
Intake Rate -- 0.289 0.077 (3) 0.137 (<2)
(L/kg-day) 0.047 (2 to <16)
0.039 (16+)
Endpoints -- renal (kidney) system, nervous system, develop-
mental
renal (kidney) system renal (kidney) system cancer

Subp. 23.

Vinyl Chloride.

CAS number: 75-01-4
Year Adopted: 2009
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) ND ND 80 10 0.2
RfD (mg/kg-day) -- -- 0.03 0.003 --
RSC -- -- 0.2 0.2 --
SF (per mg/kg-day) -- -- -- -- 1.4
AFlifetime -- -- -- -- 1
Intake Rate (L/kg-day) -- -- 0.077 0.043 0.043
Endpoints -- -- hepatic (liver) system hepatic (liver) system cancer

Subp. 23a.

Xylenes.

CAS number: 1330-20-7
Year Adopted: 2011
Volatility: High
Acute Short-term Subchronic Chronic Cancer
HRL (µg/L) 800 300 300 (2) 300 (2) NA
RfD (mg/kg-day) 1.2 0.5 (2) (2) --
RSC 0.2 0.2 (2) (2) --
SF (per mg/kg-day) -- -- -- -- --
ADAF or AFlifetime -- -- -- -- --
Intake Rate (L/kg-day) 0.289 0.289 (2) (2) --
Endpoints nervous system nervous system renal (kidney) system, nervous system renal (kidney) system, nervous system --

Subp. 24.

Transition.

The health risk limits established for the specific chemicals in this part supersede the health risk limits for those chemicals in part 4717.7500. For chemicals not included in this part, the health risk limits established in part 4717.7500 remain in place.

Statutory Authority:

MS s 103H.201; 144.0751

Published Electronically:

September 30, 2013

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