12/22/05
SECOND NOTICE CHANGES
Agency :
Pollution Control Board
Rulemaking :
Effluent Standards (35 Ill. Adm. Code 304; 29 Ill. Reg. 6200)
Changes:
1 .
In lines 141, 144 and 147, delete "will" and restore "shall"
.
2 .
In line 191, after "g)" add "Monthly Average Permit Limits" and before "Except" add
3 .
In lines 197 and 200, change the subsection labels to "A)" and "B)"
.
4 .
In line 204, change "3)" to "2)"
.
5 .
In lines 207 and 210, change "the effective date of this Section"
to "January 25, 2006"
.
6 .
In line 211, change "and(g)(2)" to "(A) and(B)" .
ILLINOIS REGISTER
POLLUTION CONTROL BOARD
NOTICE OF ADOPTED 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Delays in Upgrading (Repealed)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New Source Performance Standards (Repealed)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
ILLINOIS REGISTER
POLLUTION CONTROL BOARD
NOTICE OF ADOPTED AMENDMENTS
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
304.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 4111. Reg. 20, p. 53, effective May 7, 1980; amended at 6111. Reg. 563,
effective December 24, 1981 ; codified at 6111. Reg. 7818; amended at 6111 . Reg. 11161, effective
September 7, 1982 ; amended at 6111. Reg. 13750, effective October 26, 1982 ; amended at 7 Ill .
Reg. 3020, effective March 4, 1983 ; amended at 7111. Reg. 8111, effective June 23, 1983 ;
amended at 7 Ill . Reg. 14515, effective October 14, 1983; amended at 7 III. 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 9111. Reg. 1379, effective January 21, 1985; amended at 9 111. Reg. 4510, effective
March 22, 1985; peremptory amendment at 10111 . Reg. 456, effective December 23, 1985
;
amended at 11 111 . Reg. 3117, effective January 28, 1987 ; amended in R84-13 at 11 111. Reg .
ILLINOIS REGISTER
POLLUTION CONTROL BOARD
NOTICE OF ADOPTED AMENDMENTS
7291, effective April 3, 1987 ; amended in R86-17(A) at 11 111 . 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 12111. 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 13111 . Reg. 7754, effective May 4, 1989; amended in
R88-22 at 13 Ill. Reg. 8880, effective May 26, 1989; amended in R87-6 at 14111. Reg. 6777,
effective April 24, 1990 ; amended in R87-36 at 14111 . Reg. 9437, effective May 31, 1990 ;
amended in R88-21(B) at 14111. 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 20111 .
Reg. 3528, effective February 8, 1996 ; amended in R94-1(B) at 21 111 . Reg. 364, effective
December 23, 1996; expedited correction in R94-1(B) at 21 111. Reg. 6269, effective December
23, 1996; amended in R97-25 at 22 Ill. Reg. 1351, effective December 24, 1997 ; amended in
R97-28 at 22 111. Reg. 3512, effective February 3, 1998 ; amended in R98-14 at 23 Ill. Reg. 687,
effective December 31, 1998 ; amended in R02-19 at 26111 . Reg. 16948, effective November 8,
2002; amended in R02-11 at 27 III. Reg. 194, effective December 20, 2002 ; amended in R04-26
at 30 Ill. Reg. , effective
SUBPART A: GENERAL EFFLUENT STANDARDS
Section 304.123 Phosphorus (STORET number 00665)
a)
No effluent discharge within the Lake Michigan Basin shall contain more than 1 .0
mg/f of phosphorus as P .
b)
No effluent from any source which discharges to a lake or reservoir with a surface
area of 8.1 hectares (20 acres) or more, or to any tributary of such a lake or
reservoir whose untreated waste load is 2500 or more population equivalents, and
which does not utilize a third-stage lagoon treatment system as specified in
Section 304 .120(a) and (c), shall exceed 1 .0 mg/f of phosphorus as P; however,
this subsection shall not apply where the lake or reservoir, including any side
channel reservoir or other portion thereof, on an annual basis exhibits a mean
hydraulic retention time of 0.05 years (18 days) or less
.
c)
Pursuant to Section 28 .1 of the Environmental Protection Act (Act) [415 ILCS
I)
ILLINOIS REGISTER
POLLUTION CONTROL BOARD
NOTICE OF ADOPTED AMENDMENTS
5/28.11, the owner or operator of any source subject to subsection (b)
of this
Section may apply for an adjusted standard. In addition to the proofs specified in
Section 28.1(c) of the Act [415 ILCS 5/28 .1(c)l, such application shall, at a
minimum, contain adequate proof that the effluent resulting from grant of the
adjusted standard will not contribute to cultural eutrophication, unnatural plant or
algal growth or dissolved oxygen deficiencies in the receiving lake or reservoir
.
For purposes of this subsection (c), such effluent shall be deemed to contribute to
such conditions if phosphorus is the limiting nutrient for biological growth in the
lake or reservoir, taking into account the lake or reservoir limnology,
morphological, physical and chemical characteristics, and sediment transport
.
However, if the effluent discharge enters a tributary at least 40 .25 kilometers (25
miles) upstream of the point at which the tributary enters the lake or reservoir at
normal pool level, such effluent shall not be deemed to contribute to such
conditions if the receiving lake or reservoir is eutrophic and phosphorus from
internal regeneration is not a limiting nutrient
.
d)
For the purposes of this Section the term "lake or reservoir" shall not include low
level pools constructed in free flowing streams or any body of water which is an
integral part of an operation which includes the application of sludge on land .
e)
Compliance with the limitations of subsection (b) of this Section shall be achieved
by the following dates
:
1)
Sources with the present capability to comply shall do so on the effective
date of this Section
;
2)
All other sources shall comply as required by NPDES permit
.
For purposes of this Section, the following terms chall have the meanings
specified :
1)
"Dissolved oxygen deficiencies" means the occurrence of a violation of
the dissolved oxygen standard applicable to a lake or reservoir
.
(BOARD NOTE : Dissolved Oxygen standards for general use waters are
set forth at 35 111. Adm. Code 302.206; Dissolved Oxygen standards for
secondary contact or indigenous aquatic life waters are set forth at 35 Ill
.
Adm. Code 302.405 .)
2)
"Euphotic zone" means that region of a lake or reservoir extending from
ILLINOIS REGISTER
POLLUTION CONTROL BOARD
NOTICE OF ADOPTED AMENDMENTS
the water surface to a depth at which 99% of the surface light has
disappeared or such lesser depth below which photosynthesis does not
occur.
3)
"Eutrophic" means a condition of a lake or reservoir in which there is an
abundant supply of nutrients, including phosphorus, accounting for a high
concentration ofbiomassBiomass .
4)
"Eutrophication" means the process of increasing or accumulating plant
nutrients in the water of a lake or reservoir . Cultural eutrophication is
eutrophication attributable to human activities
.
5)
"Internal regeneration" means the process of conversion of phosphorus or
other nutrients in sediments of a lake or reservoir from the particulate to
the dissolved form and the subsequent return of such dissolved forms to
the euphotic zone .
6)
"Limiting nutrient" means a substance which is limiting to biological
growth in a lake or reservoir due to its short supply or unavailability with
respect to other substances necessary for the growth of organisms
.
7)
"Unnatural plant or algal growth" means the occurrence of a violation of
the unnatural sludge standard applicable to a lake or reservoir with respect
to such growth .
(BOARD NOTE: Unnatural sludge standards for general use waters are
set forth at 35 111. Adm. Code 302.203; unnatural sludge standards for
secondary and indigenous aquatic life waters are set forth at 35 Ill . Adm
.
Code 302.403 .)
g)
Monthly Average Permit Limits
1)
Except as provided in subsection (h) of this Section, any new or expanded
discharges into general use waters from the treatment works described in
subsection(g)(l)of this Section, not covered by subsections (b) through
(f) of this Section, are subject to monthly average permit limits for total
phosphorus of I mg/C:
ILLINOIS REGISTER
POLLUTION CONTROL BOARD
NOTICE OF ADOPTED AMENDMENTS
A)
Treatment works with a Design Average Flow of 1 .0 million
gallons per day or more receiving primarily municipal or domestic
wastewater; or
>~
Any treatment works, other than those treating primarily municipal
or domestic wastewater, with a total phosphorus effluent load of 25
pounds per day or more
.
2)
For purposes of this subsection(g) :
A)
A new discharge means a discharge from a treatment works
constructed after January 25, 2006
.
An expanded discharge means a discharge from any existing
treatment works that would be greater than the flowrates permitted
prior to January 25, 2006
.
Discharges qualifying under subsections(g)(1)(A)and (B) of this Section may not
be subject to the requirements of subsection (g) provided the discharger
demonstrates that phosphorus from treatment works is not the limiting nutrient in
the receiving water . The Agency may impose alternative phosphorus effluent
limits where the supporting information shows that alternative limits are
warranted by the aquatic environment in the receiving stream
.
II
No additional phosphorus limitations are required pursuant to Section 304 .105
and 35 Ill. Adm. Code 302.203 for the discharges that comply with the
requirements of subsection (g) or (h) of this Section
.
J)
The provisions of subsections(g), (h),and (i) of this Section apply until such time
as the Board adopts a numeric water quality standard for phosphorus and the
adopted standard is approved by the USEPA
.
The averaging rules under subsections(a)(2)and(a)(3)of Section 304 .104 do not
apply to permit limits established pursuant to subsection (g) or (h) of this Section
.
(Source: Amended at 30 111. Reg . , effective )
PCB 35 ILLINOIS ADMINISTRATIVE CODE 304
SUBTITLE C
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
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
PCB 35 ILLINOIS ADMINISTRATIVE CODE 304
SUBTITLE C
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
304.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 4 111. Reg. 20, p. 53, effective May 7, 1980 ; amended at 6 111. Reg. 563,
effective December 24, 1981 ; codified at 6 Ill. Reg. 7818; amended at 6111. Reg. 11161, effective
September 7, 1982; amended at 6111. 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 9111. Reg. 1379, effective January 21, 1985 ; amended at 9111. Reg. 4510, effective
March 22, 1985; peremptory amendment at 10111. Reg. 456, effective December 23, 1985
;
amended at 11 111. Reg. 3117, effective January 28, 1987 ; amended in R84-13 at 11 111. Reg .
7291, effective April 3, 1987; amended in R86-17(A) at 11 111. 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,
PCB 35 ILLINOIS ADMINISTRATIVE CODE 304
SUBTITLE C
1988; amended in R84-20 at 13 Ill. Reg. 851, effective January 9, 1989 ; amended in R85-11 at
13 III. 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 14111. 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 14111. 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 18111 . Reg. 267, effective December 23, 1993
;
amended in R87-33 at 18111. Reg. 11574, effective July 7, 1994; amended in R95-14 at 20111
.
Reg. 3528, effective February 8, 1996 ; amended in R94-1(B) at 21 111 . Reg. 364, effective
December 23, 1996; expedited correction in R94-1(B) at 21 111. 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 23 Ill. Reg. 687,
effective December 31, 1998 ; amended in R02-19 at 26 Ill . Reg. 16948, effective November 8,
2002; amended in R02-11 at 27 Ill. Reg. 194, effective December 20, 2002; amended in R04-26
at 30 Ill. Reg . , effective
PCB 35 ILLINOIS ADMINISTRATIVE CODE 304 304.123
SUBTITLE C
Section 304.123 Phosphorus (STORET number 00665)
a)
No effluent discharge within the Lake Michigan Basin shall contain more than 1 .0
mg/Cofphosphorus as P .
b)
No effluent from any source which discharges to a lake or reservoir with a surface
area of 8.1 hectares (20 acres) or more, or to any tributary of such a lake or
reservoir whose untreated waste load is 2500 or more population equivalents, and
which does not utilize a third-stage lagoon treatment system as specified in
Section 304.120(a) and (c), shall exceed 1 .0 mg/C of phosphorus as P ; however,
this subsection shall not apply where the lake or reservoir, including any side
channel reservoir or other portion thereof, on an annual basis exhibits a mean
hydraulic retention time of 0 .05 years (18 days) or less
.
c)
Pursuant to Section 28 .1 of the Environmental Protection Act (Act) [415 ILCS
5/28.1], the owner or operator of any source subject to subsection (b) of this
Section may apply for an adjusted standard . In addition to the proofs specified in
Section 28.1(c) of the Act [415 ILCS 5/28 .1(c)], such application shall, at a
minimum, contain adequate proof that the effluent resulting from grant of the
adjusted standard will not contribute to cultural eutrophication, unnatural plant or
algal growth or dissolved oxygen deficiencies in the receiving lake or reservoir
.
For purposes of this subsection (c), such effluent shall be deemed to contribute to
such conditions if phosphorus is the limiting nutrient for biological growth in the
lake or reservoir, taking into account the lake or reservoir limnology,
morphological, physical and chemical characteristics, and sediment transport .
However, if the effluent discharge enters a tributary at least 40 .25 kilometers (25
miles) upstream of the point at which the tributary enters the lake or reservoir at
normal pool level, such effluent shall not be deemed to contribute to such
conditions if the receiving lake or reservoir is eutrophic and phosphorus from
internal regeneration is not a limiting nutrient
.
d)
For the purposes of this Section the term "lake or reservoir" shall not include low
level pools constructed in free flowing streams or any body of water which is an
integral part of an operation which includes the application of sludge on land .
e)
Compliance with the limitations of subsection (b) of this Section shall be achieved
by the following dates :
1)
Sources with the present capability to comply shall do so on the effective
date of this Section ;
2)
All other sources shall comply as required by NPDES permit
.
PCB 35 ILLINOIS ADMINISTRATIVE CODE 304 304.123
SUBTITLE C
For purposes of this Section, the following terms have the meanings specified
:
1)
"Dissolved oxygen deficiencies" means the occurrence of a violation of
the dissolved oxygen standard applicable to a lake or reservoir
.
(BOARD NOTE: Dissolved Oxygen standards for general use waters are
set forth at 35 Ill. Adm. Code 302.206; Dissolved Oxygen standards for
secondary contact or indigenous aquatic life waters are set forth at 35 Ill
.
Adm. Code 302.405 .)
2)
"Euphotic zone" means that region of a lake or reservoir extending from
the water surface to a depth at which 99% of the surface light has
disappeared or such lesser depth below which photosynthesis does not
occur .
3)
"Eutrophic" means a condition of a lake or reservoir in which there is an
abundant supply of nutrients, including phosphorus, accounting for a high
concentration of biomass
.
4)
"Eutrophication" means the process of increasing or accumulating plant
nutrients in the water of a lake or reservoir . Cultural eutrophication is
eutrophication attributable to human activities
.
5)
"Internal regeneration" means the process of conversion of phosphorus or
other nutrients in sediments of a lake or reservoir from the particulate to
the dissolved form and the subsequent return of such dissolved forms to
the euphotic zone
.
f)
g)
6)
"Limiting nutrient" means a substance which is limiting to biological
growth in a lake or reservoir due to its short supply or unavailability with
respect to other substances necessary for the growth of organisms
.
7)
"Unnatural plant or algal growth" means the occurrence of a violation of
the unnatural sludge standard applicable to a lake or reservoir with respect
to such growth
.
(BOARD NOTE: Unnatural sludge standards for general use waters are
set forth at 35 Ill. Adm. Code 302.203; unnatural sludge standards for
secondary and indigenous aquatic life waters are set forth at 35 111 . Adm .
Code 302.403.)
Monthly Average Permit Limits
PCB 35 ILLINOIS ADMINISTRATIVE CODE 304 304.123
SUBTITLE C
1)
Except as provided in subsection (h) of this Section, any new or expanded
discharges into general use waters from the treatment works described in
subsection (g)(1) of this Section, not covered by subsections (b) through
(f) of this Section, are subject to monthly average permit limits for total
phosphorus of 1 mg/f:
A)
Treatment works with a Design Average Flow of 1 .0 million
gallons per day or more receiving primarily municipal or domestic
wastewater; or
B)
Any treatment works, other than those treating primarily municipal
or domestic wastewater, with a total phosphorus effluent load of 25
pounds per day or more
.
2)
For purposes of this subsection (g)
:
A)
A new discharge means a discharge from a treatment works
constructed after January 25, 2006
.
B)
An expanded discharge means a discharge from any existing
treatment works that would be greater than the flowrates permitted
prior to January 25, 2006
.
j)
h)
Discharges qualifying under subsections (g)(1)(A) and (B) of this Section may not
be subject to the requirements of subsection (g) provided the discharger
demonstrates that phosphorus from treatment works is not the limiting nutrient in
the receiving water. The Agency may impose alternative phosphorus effluent
limits where the supporting information shows that alternative limits are
warranted by the aquatic environment in the receiving stream
.
i)
No additional phosphorus limitations are required pursuant to Section 304.105
and 35 Ill. Adm. Code 302.203 for the discharges that comply with the
requirements of subsection (g) or (h) of this Section
.
The provisions of subsections (g), (h), and (1) of this Section apply until such time
as the Board adopts a numeric water quality standard for phosphorus and the
adopted standard is approved by the USEPA
.
k)
The averaging rules under subsections (a)(2) and (a)(3) of Section 304.104 do not
apply to permit limits established pursuant to subsection (g) or (h) of this Section
.
PCB 35 ILLINOIS ADMINISTRATIVE CODE 304 304.123
SUBTITLE C
(Source: Amended at 30 Ill . Reg . , effective )
