Illinois Administrative Code › Title 8 - AGRICULTURE AND ANIMALS › Part 259 - AGRICHEMICAL FACILITY RESPONSE ACTION PROGRAM › Subpart E - NOTICE OF CLOSURE AND RECORDING REQUIREMENTS › Appendix D - Groundwater Cleanup Objectives (GWobj)

Current through Register Vol. 48, No. 28, July 12, 2024
Name
CAS No.a
Recommended Test
							 Methodb
Subsurface
(mg/L)c
Surface
(mg/L)d
acetochlor
34256-82-1
505
0.002j
0.01g
acifluorfen sodium
62476-59-9
515.1
0.091f
0.455g
alachlor
15972-60-8
505
0.002
0.01
aldicarb
116-06-3
531.1
0.003
0.015
aldrin
309-00-2
508
0.000005e
0.000025e
ammonia
7664-41-7
350.2
10.0o
50.0o
atrazine
1912-24-9
505
0.003
0.015
bentazon sodium
50723-80-3
515.1
0.21f
1.05g
bromacil
314-40-9
507
0.7f
3.5g
bromoxynil(o)
1689-99-2
0.14f
0.7g
butylate
2008-41-5
507
0.35f
1.75
													g
carbofuran
1563-66-2
531.1
0.04
0.2
chlordane
57-74-9
508
0.002
0.01
chlorimuron-ethyl
90982-32-4
0.14f
0.7g
chlorpyrifos
2921-88-2
525.2
0.021f
0.105g
cyanazine
21725-46-2
508.1
0.014l
0.07g
2,4-D
94-75-7
515.1
0.07
0.35
4,4'-DDD
72-54-8
508
0.0004e
0.002e
4,4'-DDE
72-55-9
508
0.0003e
0.0015e
4,4'-DDT
50-29-3
508
0.0003e
0.0015e
diazinon
333-41-5
507
0.00063l
0.00315g
dicamba
1918-00-9
515.1
0.21f
1.05g
dieldrin
60-57-1
508
0.000005e
0.000025e
dimethoate
60-51-5
8141h
0.0014f
0.007g
dinoseb
88-85-7
515.1
0.007
0.07
disulfoton
298-04-4
507
0.00028f
0.0014g
endosulfan
115-29-7
508
0.2e
1.0e
endothall
145-73-3
548.1
0.1
0.1
endrin
72-20-8
508
0.002
0.01
EPTC
759-94-4
507
0.175f
0.875g
glyphosate
1071-83-6
0.7k
3.5g
HCH-alpha
319-84-6
508
0.00001e
0.00005e
heptachlor
76-44-8
505
0.0004
0.002
heptachlor epoxide
1024-57-3
505
0.0002
0.001
lindane
58-89-9
508
0.0002
0.001
linuron
330-55-2
508
0.014f
0.07g
malathion
121-75-5
0.14f
0.7g
methoxychlor
72-43-5
508
0.04
0.2
metolachlor
51218-45-2
507
1.05f
5.25g
metribuzin
21087-64-9
507
0.175m
0.875g
nitrate, as N
7631-99-4
300.0
10.0c
100.0d
parathion, ethyl
56-38-2
8141h
0.042f
0.21g
parathion, methyl
298-00-0
8141h
0.00175f
0.00875g
pendimethalin
40487-42-1
0.28f
1.4g
permethrin
52645-53-1
0.35f
1.75g
phorate
298-02-2
8141h
0.0014i
0.007g
simazine
122-34-9
505
0.004
0.04
2,4,5-TP
93-72-1
515.1
0.05
0.25
terbufos
13071-79-9
507
0.00175i
0.00875g
toxaphene
8001-35-2
508
0.003
0.015
trifluralin
1582-09-8
508
0.0525f
0.2625g
Notes:
a Chemical Abstract Service
				  (CAS)
b USEPA "Methods for the
				  Determination of Organic Compounds in Drinking Water" Supplement III of
				  1995
c Groundwater Quality Standards
				  for Class I: Potable Resource Groundwater (35 Ill. Adm. Code
				  620.410
				  )
d Groundwater Quality Standards
				  for Class II: General Resource Groundwater (35 Ill. Adm. Code
				  620.420
				  )
e Tiered Approach to Corrective
				  Action Objectives (TACO): Values Used to Calculate the Tier I Soil Remediation
				  Objectives for the Migration to Groundwater Portion of the Groundwater
				  Ingestion Route (35 Ill. Adm. Code 742.Appendix B:Table F)
f Human Threshold Toxicant
				  Advisory Concentration (HTTAC) from "Procedures for Determining Human Threshold
				  Toxicant Advisory Concentration for Class I: Potable Resource Groundwater" (35
				  Ill. Adm. Code 620.Appendix A) using values from Integrated Risk Information
				  System (IRIS), USEPA
g Class II
				  GWobj values based on Class I
				  GWobjvalues times 5
h USEPA "Test Methods for
				  Evaluating Solid Wastes, Physical/Chemical Methods (SW-846)", July 1992
i HTTAC using values from Health
				  Effects Assessment Summary Tables (HEAST), 1997, USEPA
j Value from the Acetochlor
				  Registration Agreement monitoring program,
http://www.epa.gov/oppefed1/aceto/index.htm
k MCL value from Drinking Water
				  Standards and Health Advisories (Summer 2000, EPA 822-B-00-001)
l HTTAC using RfD value from
				  Drinking Water Standards and Health Advisories (Summer 2000, EPA
				  822-B-00-001)
m HTTAC using RfD value from Risk
				  Assessment Information System (RAIS),
http://risk.lsd.ornl.gov/rap_hp.shtml
n In order to provide
				  environmentally conservative default SCOs that take into account the potential
				  for long-term nitrification, one-third of the USEPA's Lifetime Health Advisory
				  Level for ammonia in drinking water (30 mg/L) is used as basis for the
				  groundwater cleanup objectives for Class I and Class II groundwater (U.S.
				  Environmental Protection Agency, 2004, 2004 Edition of the Drinking Water
				  Standards and Health Advisories, Office of Water, Washington, D.C., EPA
				  822-R-04-005). Although the Lifetime Health Advisory Level was established for
				  ammonia, most of the dissolved ammonia occurs as ammonium within the pH range
				  (5.6 -9.0) of Illinois groundwater.