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40 CFR PART 420—IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY
1-40CFR420.txt - CFR - 5/16/2006 0:00:00 - Regulation - US

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Subpart H
------------------------------------------------------------------------
BCT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.204 0.0876
pH.............................................. (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 6.0 to 9.0.


(2) Batch, rod and wire.


Subpart H
------------------------------------------------------------------------
BCT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.123 0.0526
pH.............................................. (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 6.0 to 9.0.


(3) Batch, pipe and tube.


Subpart H
------------------------------------------------------------------------
BCT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.496 0.213
pH.............................................. (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 6.0 to 9.0.


(4) Continuous.


Subpart H
------------------------------------------------------------------------
BCT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.0964 0.0413
pH.............................................. (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 6.0 to 9.0.


(b) Salt bath descaling, reducing—(1) Batch.


Subpart H
------------------------------------------------------------------------
BCT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.0949 0.0407
pH.............................................. (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 6.0 to 9.0.


(2) Continuous.


Subpart H
------------------------------------------------------------------------
BCT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.532 0.228
pH.............................................. (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 6.0 to 9.0.


[47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982]

Subpart I—Acid Pickling Subcategory
top
§ 420.90 Applicability; description of the acid pickling subcategory.
top
The provisions of this subpart are applicable to discharges and to the introduction of pollutants into publicly owned treatment works resulting from sulfuric acid, hydrochloric acid, or combination acid pickling operations.

§ 420.91 Specialized definitions.
top
(a) The term sulfuric acid pickling means those operations in which steel products are immersed in sulfuric acid solutions to chemically remove oxides and scale, and those rinsing operations associated with such immersions.

(b) The term hydrochloric acid pickling means those operations in which steel products are immersed in hydrochloric acid solutions to chemically remove oxides and scale, and those rinsing operations associated with such immersions.

(c) The term combination acid pickling means those operations in which steel products are immersed in solutions of more than one acid to chemically remove scale and oxides, and those rinsing steps associated with such immersions.

(d) The term fume scrubber means those pollution control devices used to remove and clean fumes originating in pickling operations.

(e) The term batch means those pickling operations which process steel products such as coiled wire, rods, and tubes in discrete batches or bundles.

(f) The term continuous means those pickling operations which process steel products other than in discrete batches or bundles.

(g) The term acid recovery means those sulfuric acid pickling operations that include processes for recovering the unreacted acid from spent pickling acid solutions.

(h) The term acid regeneration means those hydrochloric acid pickling operations that include processes for regenerating acid from spent pickling acid solutions.

(i) The term neutralization means those acid pickling operations that do not include acid recovery or acid regeneration processes.

(j) The term spent acid solution (or spent pickle liquor) means those solutions of steel pickling acids which have been used in the pickling process and are discharged or removed therefrom.

(k) The term rod, wire and coil means those acid pickling operations that pickle rod, wire or coiled rod and wire products.

(l) The term bar, billet and bloom means those acid pickling operations that pickle bar, billet or bloom products.

(m) The term strip, sheet and plate means those acid pickling operations that pickle strip, sheet or plate products.

(n) The term pipe, tube and other means those acid pickling operations that pickle pipes, tubes or any steel product other than those included in paragraphs (k), (l) and (m) of this section.

§ 420.92 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
top
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

(a) Sulfuric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.0818 0.0350
O&G \1\..................................... 0.0350 0.0117
Lead............................................ 0.000526 0.000175
Zinc............................................ 0.000701 0.000234
pH.............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(2) Bar, billet and bloom.


Subpart I
------------------------------------------------------------------------
BPT effluent limitations
---------------------------
Average of
Pollutant or pollutant property daily values
Maximum for for 30
any 1 day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds per
1,000 lb) of
product
---------------------------
TSS......................................... 0.0263 0.0113
O&G \1\................................. 0.0113 0.00375
Lead........................................ 0.000169 0.0000563
Zinc........................................ 0.000225 0.0000751
pH.......................................... (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(3) Strip, sheet and plate.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.0526 0.0225
O&G\1\...................................... 0.0225 0.00751
Lead............................................ 0.000338 0.000113
Zinc............................................ 0.000451 0.000150
pH.............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(4) Pipe, tube and other products.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.146 0.0626
O&G\1\...................................... 0.0626 0.0209
Lead............................................ 0.000939 0.000313
Zinc............................................ 0.00125 0.000417
pH.............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(5) Fume scrubbers.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kilograms
per day
-----------------------
TSS............................................. 5.72 2.45
O&G \1\..................................... 2.45 0.819
Lead............................................ 0.0368 0.0123
Zinc............................................ 0.0491 0.0164
pH.............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


The above limitations shall be applicable to each fume scrubber associated with a sulfuric acid pickling operation.

(b) Hydrochloric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.143 0.0613
O&G \1\..................................... 0.0613 0.0204
Lead............................................ 0.000920 0.000307
Zinc............................................ 0.00123 0.000409
pH.............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(2) Strip, sheet and plate.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.0818 0.0350
O&G \1\..................................... 0.0350 0.0117
Lead............................................ 0.000526 0.000175
Zinc............................................ 0.000701 0.000234
pH.............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(3) Pipe, tube and other products.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
------------------------
TSS............................................ 0.298 0.128
O&G \1\.................................... 0.128 0.0426
Lead........................................... 0.00192 0.000638
Zinc........................................... 0.00255 0.000851
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(4) Fume scrubbers.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kilograms
per day
------------------------
TSS............................................ 5.72 2.45
O&G \1\.................................... 2.45 0.819
Lead........................................... 0.0368 0.0123
Zinc........................................... 0.0491 0.0164
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


The above limitations shall be applicable to each fume scrubber associated with a hydrochloric acid pickling operation.

(5) Acid regeneration (absorber vent scrubber).


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kilograms
per day
------------------------
TSS............................................ 38.2 16.3
O&G \1\.................................... 16.3 5.45
Lead........................................... 0.245 0.0819
Zinc........................................... 0.327 0.109
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


The above limitations shall be applicable to the absorber vent scrubber wastewater associated with hydrochloric acid regeneration plants.

(c) Combination acid pickling (spent acid solution and rinse waters)—(1) Rod, Wire, and Coil.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
------------------------
TSS............................................ 0.149 0.0638
O&G \1\.................................... 0.0638 0.0213
Chromium....................................... 0.00213 0.000852
Nickel......................................... 0.00192 0.000638
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(2) Bar, billet, and bloom.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
TSS............................................. 0.0672 0.0288
O&G \1\..................................... 0.0288 0.00960
Chromium........................................ 0.000960 0.000384
Nickel.......................................... 0.000864 0.000288
pH.............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(3) Strip, sheet, and plate—continuous.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
------------------------
TSS............................................ 0.438 0.188
O&G \1\.................................... 0.188 0.0626
Chromium....................................... 0.00626 0.00250
Nickel......................................... 0.00563 0.00188
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(4) Strip, sheet and plate—batch.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
------------------------
TSS............................................ 0.134 0.0576
O&G \1\.................................... 0.0576 0.0192
Chromium....................................... 0.00192 0.000768
Nickel......................................... 0.00173 0.000576
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(5) Pipe, tube, and other products.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
------------------------
TSS............................................ 0.225 0.0964
O&G\1\..................................... 0.0964 0.0322
Chromium....................................... 0.00322 0.00129
Nickel......................................... 0.00289 0.000964
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


(6) Fume scrubbers.


Subpart I
------------------------------------------------------------------------
BPT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kilograms
per day
------------------------
TSS............................................ 5.72 2.45
O&G\1\..................................... 2.45 0.819
Chromium....................................... 0.0819 0.0327
Nickel......................................... 0.0735 0.0245
pH............................................. (\2\) (\2\)
------------------------------------------------------------------------
\1\ The limitations for oil and grease shall be applicable when acid
pickling wastewaters are treated with cold rolling wastewaters.
\2\ Within the range of 6.0 to 9.0.


The above limitations shall be applicable to each fume scrubber associated with a combination acid pickling operation.

[47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982, as amended at 49 FR 21030, May 17, 1984]

§ 420.93 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
top
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

(a) Sulfuric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.


Subpart I
------------------------------------------------------------------------
BAT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
Lead............................................ 0.000526 0.000175
Zinc............................................ 0.000701 0.000234
------------------------------------------------------------------------


(2) Bar, billet and bloom.


Subpart I
------------------------------------------------------------------------
BAT effluent
limitations
------------------------
Average of
Pollutant or pollutant property Maximum daily values
for any 1 for 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
------------------------
Lead........................................... 0.000169 0.0000563
Zinc........................................... 0.000225 0.0000751
------------------------------------------------------------------------


(3) Strip, sheet and plate.


Subpart I
------------------------------------------------------------------------
BAT effluent
limitations
------------------------
Average of
Pollutant or pollutant property Maximum daily values
for any 1 for 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
------------------------
Lead........................................... 0.000338 0.000113
Zinc........................................... 0.000451 0.000150
------------------------------------------------------------------------


(4) Pipe, tube and other products.


Subpart I
------------------------------------------------------------------------
BAT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
Lead............................................ 0.000939 0.000313
Zinc............................................ 0.00125 0.000417
------------------------------------------------------------------------


(5) Fume scrubbers.


Subpart I
------------------------------------------------------------------------
BAT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kilograms
per day
------------------------
Lead........................................... 0.0368 0.0123
Zinc........................................... 0.0491 0.0164
------------------------------------------------------------------------


The above limitations shall be applicable to each fume scrubber associated with a sulfuric acid pickling operation.

(b) Hydrochloric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.


Subpart I
------------------------------------------------------------------------
BAT effluent
limitations
-----------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days
------------------------------------------------------------------------
Kg/kkg
(pounds
per 1,000
lb) of
product
-----------------------
Lead............................................ 0.000920 0.000307
Zinc............................................ 0.00123 0.000409
------------------------------------------------------------------------


(2) Strip, sheet and plate. (continued)
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