ILLINOIS
REGISTER
POLLUTION CONTROL BOARD
NOTICE OF PROPOSED AMENDMENTS
TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE C: WATER POLLUTION
CHAPTER I: POLLUTION CONTROL BOARD
PART 304
EFFLUENT STANDARDS
SUBPART A: GENERAL EFFLUENT STANDARDS
Section
304.101 Preamble
304.102 Dilution
304.103 Background Concentrations
304.104 Averaging
304.105
Violation of Water Quality Standards
304.106 Offensive Discharges
304.120 Deoxygenating Wastes
304.121 Bacteria
304.122
Total Ammonia Nitrogen (as N: STORET number 00610)
304.123
Phosphorus (STORET number 00665)
304.124 Additional Contaminants
304.125 pH
304.126 Mercury
304.140
Delays in Upgrading (Repealed)
304.141
NPDES Effluent Standards
304.142
New Source Performance Standards (Repealed)
SUBPART B: SITE SPECIFIC RULES AND EXCEPTIONS NOT OF GENERAL
APPLICABILITY
Section
304.201
Wastewater Treatment Plant Discharges of the Metropolitan Water
Reclamation District of Greater Chicago
304.202
Chlor-alkali Mercury Discharges in St. Clair County
304.203
Copper Discharges by Olin Corporation
304.204
Schoenberger Creek: Groundwater Discharges
304.205
John Deere Foundry Discharges
304.206
Alton Water Company Treatment Plant Discharges
304.207
Galesburg Sanitary District Deoxygenating Wastes Discharges
304.208
City of Lockport Treatment Plant Discharges
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304.209
Wood River Station Total Suspended Solids Discharges
304.210
Alton Wastewater Treatment Plant Discharges
304.211
Discharges From Borden Chemicals and Plastics Operating Limited
Partnership Into an Unnamed Tributary of Long Point Slough
304.212
Sanitary District of Decatur Discharges
304.213
PDV Midwest Refining, L.L.C. Refinery Ammonia Discharge
304.214
Mobil Oil Refinery Ammonia Discharge
304.215
City of Tuscola Wastewater Treatment Facility Discharges
304.216
Newton Station Suspended Solids Discharges
304.218
City of Pana Phosphorus Discharge
304.219
North Shore Sanitary District Phosphorus Discharges
304.220
East St. Louis Treatment Facility, Illinois-American Water Company
304.221
Ringwood Drive Manufacturing Facility in McHenry County
304.222
Intermittent Discharge of TRC
SUBPART C: TEMPORARY EFFLUENT STANDARDS
Section
304.301
Exception for Ammonia Nitrogen Water Quality Violations (Repealed)
304.302
City of Joliet East Side Wastewater Treatment Plant
304.303
Amerock Corporation, Rockford Facility
Appendix A
References to Previous Rules
AUTHORITY: Implementing Section 13 and authorized by Section 27 of the
Environmental Protection Act [415 ILCS 5/13 and 27].
SOURCE: Filed with the Secretary of State January 1, 1978; amended at 2 Ill. Reg. 30,
p. 343, effective July 27, 1978; amended at 2 Ill. Reg. 44, p. 151, effective November 2,
1978; amended at 3 Ill. Reg. 20, p. 95, effective May 17, 1979; amended at 3 Ill. Reg. 25,
p. 190, effective June 21, 1979; amended at 4 Ill. Reg. 20, p. 53 effective May 7, 1980;
amended at 6 Ill. Reg. 563, effective December 24, 1981; codified at 6 Ill. Reg. 7818:
amended at 6 Ill. Reg. 11161, effective September 7, 1982; amended at 6 Ill. Reg. 13750,
effective October 26, 1982; amended at 7 Ill. Reg. 3020, effective March 4, 1983;
amended at 7 Ill. Reg. 8111, effective June 23, 1983; amended at 7 Ill. Reg. 14515,
effective October 14, 1983; amended at 7 Ill. Reg. 14910, effective November 14, 1983;
amended at 8 Ill. Reg. 1600, effective January 18, 1984; amended at 8 Ill. Reg. 3687,
effective March 14, 1984; amended at 8 Ill. Reg. 8237, effective June 8, 1984; amended
at 9 Ill. Reg. 1379, effective January 21, 1985; amended at 9 Ill. Reg. 4510, effective
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March 22, 1985; peremptory amendment at 10 Ill. Reg. 456, effective December 23,
1985; amended at 11 Ill. Reg. 3117, effective January 28, 1987; amended in R84-13 at 11
Ill. Reg. 7291 effective April 3, 1987; amended in R86-17(A) at 11 Ill. Reg. 14748,
effective August 24, 1987; amended in R84-16 at 12 Ill. Reg. 2445, effective January 15,
1988; amended in R83-23 at 12 Ill. Reg. 8658, effective May 10, 1988; amended in R87-
27 at 12 Ill. Reg. 9905, effective May 27, 1988; amended in R82-7 at 12 Ill. Reg. 10712,
effective June 9, 1988; amended in R85-29 at 12 Ill. Reg. 12064, effective July 12, 1988;
amended in R87-22 at 12 Ill. Reg. 13966, effective August 23, 1988; amended in R86-3
at 12 Ill. Reg. 20126, effective November 16, 1988; amended in R84-20 at 13 Ill. Reg.
851, effective January 9, 1989; amended in R85-11 at 13 Ill. Reg. 2060, effective
February 6, 1989; amended in R88-1 at 13 Ill. Reg. 5976, effective April 18, 1989;
amended in R86-17(B) at 13 Ill. Reg. 7754, effective May 4, 1989; amended in R88-22 at
13 Ill. Reg. 8880, effective May 26, 1989; amended in R87-6 at 14 Ill. Reg. 6777,
effective April 24, 1990; amended in R87-36 at 14 Ill. Reg. 9437, effective May 31,
1990; amended in R88-21(B) at 14 Ill. Reg. 12538, effective July 18, 1990; amended in
R84-44 at 14 Ill. Reg. 20719, effective December 11, 1990; amended in R86-14 at 15 Ill.
Reg. 241, effective December 18, 1990; amended in R93-8 at 18 Ill. Reg. 267, effective
December 23, 1993; amended in R87-33 at 18 Ill. Reg. 11574, effective July 7, 1994;
amended in R95-14 at 20 Ill. Reg. 3528, effective February 8, 1996; amended in R94-
1(B) at 21 Ill. Reg. 364, effective December 23, 1996; expedited correction in R94-1(B)
at 21 Ill. Reg. 6269, effective December 23, 1996; amended in R97-25 at 22 Ill. Reg.
1351, effective December 24, 1997; amended in R97-28 at 22 Ill. Reg. 3512, effective
February 3, 1998; amended in R98-14 at 22 Ill. Reg.687, effective December 31, 1998,
amended in __________ at __________ Ill. Reg. _______________, effective
________________, 2002).
BOARD NOTE: This Part implements the Illinois Environmental Protection Act of July
1, 1994.
Section 304.120 Deoxygenating Wastes
Except as provided in Section 306.103, all effluents containing deoxygenating wastes
shall meet the following standards:
a) No effluent shall exceed 30 mg/l of five day biochemical oxygen demand
(BOD5 ) (STORET number 00310) or 30 mg/l of suspended solids
(STORET number 00530), except that treatment works employing three
stage lagoon treatment systems which are properly designed, maintained
and operated, and whose effluent has a dilution ratio no less than five to
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one or who qualify for exceptions under subsection (c) shall not exceed 37
mg/l of suspended solids.
b) No effluent from any source whose untreated waste load is 10,000
population equivalents or more, or from any source discharging into the
Chicago River System or into the Calumet River System, shall exceed 20
mg/l of BOD5 or 25 mg/l of suspended solids.
c) No effluent whose dilution ratio is less than five to one shall exceed 10
mg/l of BOD5 or 12 mg/l of suspended solids, except that sources
employing third-stage treatment lagoons shall be exempt from this
subsection (c) provided all of the following conditions are met:
1) The waste source qualifies under one of the following categories:
A) Any wastewater treatment works with an untreated waste
load less than 2500 population equivalents, which is
sufficiently isolated that combining with other sources to
aggregate 2500 population equivalents or more is not
practicable.
B) Any wastewater treatment works in existence and
employing third-stage treatment lagoons on January 1,
1986, whose untreated waste load is 5000 population
equivalents or less and sufficiently isolated that combining
to aggregate 5000 population equivalents or more is not
practicable.
C) Any wastewater treatment works with an untreated waste
load of 5000 population equivalents or less, which has
reached the end of its useful life by January 1, 1987, and is
sufficiently isolated that combining to aggregate 5000
population equivalents or more is not practicable.
D) Any wastewater treatment works with an untreated waste
load of 5000 population equivalents or less which has
reached the end of its useful life and which has received an
adjusted standard determination from the Board that it
qualifies for a lagoon exemption. Such a Board
determination will only be made in an adjusted standard
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proceeding, held in accordance with Section 28.1 of the
Environmental Protection Act (Ill. Rev. Stat. 1987, ch.
111 ½, par. 1028.1) and applicable procedures set forth by
35 Ill. Adm. Code 106.
i) In an adjusted standard proceeding the Board may
determine that the petitioning wastewater treatment
source qualifies for a lagoon exemption if the
wastewater treatment works proves that it is so
situated that a land treatment system is not a
suitable treatment alternative. Factors relevant to a
suitability finding may include the following: cost;
influent character; geographic characteristics;
climate; soil conditions; hydrologic conditions; and
the availability of irrigable land.
ii) For the purposes of this subsection (D), a land
treatment system is a wastewater treatment system
which does not directly discharge treated effluent to
waters of the State but instead uses the treated
effluent to irrigate terrestrial vegetation
2) The lagoons are properly constructed, maintained and operated;
and
3) The deoxygenating constituents of the effluent do not, alone or in
combination with other sources, cause a violation of the applicable
dissolved oxygen water quality standard.
d) No effluent discharged to the Lake Michigan basin shall exceed 4 mg/l of
BOD5 or 5 mg/l of suspended solids.
e) Compliance with the numerical standards in this Section shall be
determined on the basis of the type and frequency of sampling prescribed
by the NPDES permit for the discharge at the time of monitoring.
f) For the purposes of this Section, useful life is the period of time during
which it is cost effective to operate and maintain a particular wastewater
treatment works under consideration. At a minimum, the following
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factors relating to a wastewater treatment works shall be considered in a
determination of its useful life:
1) Structural and operational condition of components;
2) Past operations and maintenance record;
3) Cost for continued use; and
4) Description and costs for treatment alternatives.
g) Compliance with the BOD5 numerical standard in Section 304.120 for
Publicly Owned Treatment Works, Publicly Regulated Treatment Works or
other domestic sewage treatment works will be determined by the analysis of
5 day carbonaceous biochemical oxygen demand (CBOD5) (STORET number
80082). Effluent from the treatment works subject to the requirements of
Section 304.120(a) shall not exceed 25 mg/L CBOD5.
(Source: Amended at 13 Ill. Reg. 7754, effective May 4, 1989, amended in __________
at __________ Ill. Reg. _______________, effective ________________, 2002).