DEQ-CFW_00010657

Appendix #I JMACs
APPENDIX # I INTERIM MAXIMUM ALLOWABLE CONCENTRATIONS(IMACs)
Interim Maxinnun Allowable Concentrations (IMAC) shown in the table below are those established tinder
15A NCAC 2L,0202. For more information, contact the Division of Water Quality Planning Section at (919)
807-6416 or the web site at: http:// c ttal,nedenr.orgL -L ggs
Substance
- ----------- ----
Concentration
ug1l, (unless otherwise noted)
Effective Date
Acetochlor
100
December 1, 2010
Aectoeblor ESA
................
I Mg/l,
December 1, 2010
Acetochlor OXA
I mg/L
December 1, 2010
Acetophenone
700
April 1, 2011
Acrolem
4
October 1, 2010
Alachlor
0.4
August 1, 2010
Aldrin
0.002
October 1, 2010
An-imonia
1.5 nig/L
ALIgUA 1, 2010
Antimony
I
August 1, 2010
Benzaldehyde
700
April 1, 2011
Benzyl Alcohol
700
October 1, 2010
Beryllium
4
October 1, 2010
Brornomethane
10
August 1, 2010
Butanol, n- (n-butyl alcohol)
700
August 1, 2010
Butanol, sec- (see -butyl alcohol)
10 Ing/1
October 1, 2010
Butanol, tert- (tert-butyl alcohol)-
10
June 1, 2011
Carbazole
2
April 1, 2011
4-Chlorotoluene
24
October 1, 2010
Cobalt
I
October 1, 2010
Dalapon
200
August 1, 2010
Dibenzoftiran
28
May 24, 1999
1,4-Dibromobenzene
70
August 1, 2010
Dibromomethane
70
October 1, 2010
Dichloroacetic Acid
0.7
October. 1., 2010
1,2-Dicb,loroethylene, mixed
isomers
60
October 1, 2010
2,4-Dichloropbenol
0.98
August 1, 2010
DDE
0.1
August 1, 2010
Dinoseb
7
August 1, 2010
NORTH CAROLINA ADMINISTRA'I'lVE CODE Amended April 1, 2013 23
DEQ-CFW-00010657

Appendix #f l IMAC s
Substance
Concentration
u /L (unless otherwise noted)
-
Effective Date
Diphenyl ether
l00
April 1, 2011
2,4-Dinitrotoluene
0.1
April 1, 2011
Diquat
20
August 1, 2010
EndOSU. an sulfate
40
April 1, 2011
Endothall
100
August1, 2010
Ethanol (ethyl alcohol)
4 mg/I.,
April 1, 2011
Ethyl tent -butyl ether (ETBE)
47 _
April 1, 2:011
alpha-.Hexachlorucyclohexane
0.006
April 1, 2011
beta-Hexachlorocyclohexane
0.02
April 1, 2011
2-I lexanone
40 _
April 1, 2011
4-1sopropyltoluene (p-eymene)
25
April 1, 2011
Methyl lsobutyl Ketone
100
December 1, 2010
Methyl methacTylate
25
August 1, 201.0
1-Methy1naphthalene
1.
.April 1, 2011
2-Methyl phenol (o-cresol)
400_
April 1, 2011
Perchlorate & Perchlorate Salts
2
December 1, 2010
Perfluorooctanoic acid (PFOA:
2 - --
December 6, 2006
Pierarnic. Acid.
0.7
October 1, 2010.
Polychlorinated L iphenyls
0.09
October 1, 2010
Propylene Glycol
140 mg/L
July 16, 2012
'rent -Amyl Methyl Ether (TAME)
128
April 1, 2011
1,2, ,54'etrachlorobenrene
2
August 1, 2010
1, 1, 1,2-Tetrachloroethane
1
August 1., 2010
Thallium
0.2
October 1, 201.0
Tin
� - 2 Tag/.l.,
October 1, 2010
1, 1,2 -Trichloro ethane
_ 0.6
August 1, 2010
2,4,5-irichloTophenol
63
October 1, 2010
2,4,6-Tr chlorophenol
4
October 1, 2010
Vanadium (excluding vanadium
eTltf3xlde
0.3
October l 2010.
'
Vinyl Acetate
8la
October 1, 2 (11t3
NDRTII CAROLINA ADMINISTRATIVE CODE Amended April 1„ 2013 24
DEQ-CFW 00010658