CCLME.ORG - 40 CFR PART 406—GRAIN MILLS POINT SOURCE CATEGORY

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United States Regulations
40 CFR PART 406—GRAIN MILLS POINT SOURCE CATEGORY

PART 406—GRAIN MILLS POINT SOURCE CATEGORY

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Authority: Secs. 301, 304 (b) and (c), 306 (b) and (c), 307(c) of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c), 1317(c); 86 Stat. 816 et seq., Pub. L. 92–500; 91 Stat. 1567, Pub. L. 95–217.

Source: 39 FR 10513, Mar. 20, 1974, unless otherwise noted.

Subpart A—Corn Wet Milling Subcategory
top
ง 406.10 Applicability; description of the corn wet milling subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the process in which shelled corn is steeped in a dilute solution of sulfurous acid and then processed by wet means into such products as animal feed, regular and modified starches, corn oil, corn syrup, and dextrose.

ง 406.11 Specialized definitions.
top
For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

(b) The term corn shall mean the shelled corn delivered to a plant before processing.

(c) The term standard bushel shall mean a bushel of shelled corn weighing 56 pounds.

(d) The abbreviation MSBu shall mean 1000 standard bushels.

ง 406.12 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
(a) Except as provided in งง125.30 through 125.32, and subject to the provisions in paragraph (b) of this section, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
corn)
-----------------------------
BOD5...................................... 2.67 0.89
TSS....................................... 4.32 1.08
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per 1,000
stdbu of
corn)
-----------------------------
BOD5...................................... 150 50
TSS....................................... 240 60
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

(b) The limitations given in paragraph (a) of this section for BOD5 and TSS are derived for a point source producing products standards to the corn wet milling industry. For those plants producing modified starches at a rate of at least 15 percent by dry-basis weight of total sweetener and starch products per month for 12 consecutive months, the following limitations should be used to derive an additive adjustment to the discharge allowed by paragraph (a) of this section:

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
corn)
-----------------------------
BOD5...................................... 0.81 0.27
TSS....................................... 2.16 .54
-----------------------------
English
units
(pounds
per 1,000
stdbu of
corn)
-----------------------------
BOD5...................................... 45 15
TSS....................................... 120 30
------------------------------------------------------------------------

[39 FR 10513, Mar. 20, 1974, as amended at 42 FR 62371, Dec. 12, 1977; 60 FR 33936, June 29, 1995]

ง 406.13 [Reserved]
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ง 406.14 Pretreatment standards for existing sources.
top
Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to a publicly owned treatment works by a point source subject to the provisions of this subpart.

------------------------------------------------------------------------
Pollutant or pollutant property Pretreatment standard
------------------------------------------------------------------------
pH........................................ No limitation.
BOD5...................................... Do.
TSS....................................... Do.
------------------------------------------------------------------------

[40 FR 6436, Feb. 11, 1975, as amended at 60 FR 33036, June 29, 1995]

ง 406.15 Standards of performance for new sources.
top
The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this subpart:

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
corn)
-----------------------------
BOD5...................................... 1.08 0.36
TSS....................................... 1.35 .45
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per 1,000
stdbu of
corn)
-----------------------------
BOD5...................................... 60 20
TSS....................................... 75 25
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

[41 FR 50823, Nov. 18, 1976]

ง 406.16 Pretreatment standards for new sources.
top
Any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the provisions set forth in paragraph (a) of this section apply, as well as the following pretreatment standard which establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to publicly owned treatment works by a new source subject to the provisions of this subpart.

------------------------------------------------------------------------
Pollutant or pollutant property Pretreatment standard
------------------------------------------------------------------------
pH........................................ No limitation.
BOD5...................................... Do.
TSS....................................... Do.
------------------------------------------------------------------------

(a) Process waste water shall not be discharged to a POTW at a flow rate or pollutant mass loading rate which is excessive over any time period during the peak load at a POTW. Excessive discharges are defined as those in which the flow of BOD5 or total suspended solids (TSS) exceed the respective values of P from the following formula:

P = K(Q+R)-S

where:

P = maximum allowable peak waste load for the new corn wet milling source to be discharged to the POTW (gallons per one hour for flow and pounds per day for BOD5 and TSS).

Q = average existing waste load to POTW.

R = average waste load for the new corn wet milling source to be discharged to POTW.

S = existing peak load of POTW.

K = 2. When the ratio of (S/Q) is greater than 1.5, K = 3.

Calculations are to be based on dry weather conditions.

[40 FR 52016, Nov. 7, 1975, as amended at 60 FR 33936, June 29, 1995]

ง 406.17 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology.
top
The following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a point source subject to the provisions of this subpart after application of the best conventional pollutant control technology.

(a) Subject to the provisions in paragraph (b) of this section, the following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable:

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
corn)
-----------------------------
BOD5...................................... 1.08 0.36
TSS....................................... 1.62 .54
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per 1,000
stdbu of
corn)
-----------------------------
BOD5...................................... 60 20
TSS....................................... 90 30
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

(b) The limitations given in paragraph (a) of this section for BOD5 and TSS are derived for a point source producing products standard to the corn wet milling industry. For those plants producing modified starches at a rate of at least 15 percent by dry-basis weight of total sweetener and starch products per month for 12 consecutive months, the following limitations should be used to derive an additive adjustment to the discharge allowed by paragraph (a) of this section:

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
corn)
-----------------------------
BOD5...................................... 0.43 0.14
TSS....................................... 0.66 .22
-----------------------------
English
units
(pounds
per 1,000
stdbu of
corn)
-----------------------------
BOD5...................................... 24 8
TSS....................................... 36 12
------------------------------------------------------------------------

[42 FR 62372, Dec. 12, 1977. Redesignated and amended at 44 FR 50739, Aug. 29, 1979]

Editorial Note: Section 406.17 was indefinitely suspended at 45 FR 45582, July 7, 1980.

Subpart B—Corn Dry Milling Subcategory
top
ง 406.20 Applicability; description of the corn dry milling subcategory.
top
(a) The provisions of this subpart are applicable to discharges resulting from the process in which shelled corn is washed and subsequently milled by dry processes into such products as corn meal, grits, flour, oil, and animal feed.

(b) The provisions of this subpart do not apply to discharges from subsequent manufacturing operations to produce expanded or extruded feed or feed products.

ง 406.21 Specialized definitions.
top
For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

(b) The term corn shall mean the shelled corn delivered to a plant before processing.

(c) The term standard bushel shall mean a bushel of shelled corn weighing 56 pounds.

(d) The abbreviation MSBu shall mean 1000 standard bushels.

ง 406.22 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

------------------------------------------------------------------------
Effluent limitations
------------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
corn)
------------------------------
BOD5..................................... 0.21 0.07
TSS...................................... 0.18 .06
pH....................................... (\1\) (\1\)
------------------------------
English
units
(pounds
per 1,000
stdbu of
corn)
------------------------------
BOD5..................................... 12.0 4.0
TSS...................................... 10.5 3.5
pH....................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

[39 FR 10513, Mar. 20, 1974, as amended at 60 FR 33936, June 29, 1995]

ง 406.23 [Reserved]
top
ง 406.24 Pretreatment standards for existing sources.
top
Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to a publicly owned treatment works by a point source subject to the provisions of this subpart.

------------------------------------------------------------------------
Pollutant or pollutant property Pretreatment standard
------------------------------------------------------------------------
pH........................................ No limitation.
BOD5...................................... Do.
TSS....................................... Do.
------------------------------------------------------------------------

[40 FR 6436, Feb. 11, 1975, as amended at 60 FR 33936, June 29, 1995]

ง 406.25 Standards of performance for new sources.
top
The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this part:

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
corn)
-----------------------------
BOD5...................................... 0.11 0.036
TSS....................................... 0.054 0.18
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per 1,000
stdbu of
corn)
-----------------------------
BOD5...................................... 6.0 2.0
TSS....................................... 3.0 1.0
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

ง 406.26 Pretreatment standards for new sources.
top
Any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403.

[60 FR 33936, June 29, 1995]

ง 406.27 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT): The limitations shall be the same as those specified for conventional pollutants (which are defined in ง401.16) in ง406.22 of this subpart for the best practicable control technology currently available (BPT).

[51 FR 24997, July 9, 1986]

Subpart C—Normal Wheat Flour Milling Subcategory
top
ง 406.30 Applicability; description of the normal wheat flour milling subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the processes in which wheat and other grains are milled by dry processes into flour and millfeed.

ง 406.31 Specialized definitions.
top
For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

ง 406.32 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): There shall be no discharge of process waste water pollutants to navigable waters.

[60 FR 33936, June 29, 1995]

ง 406.33 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
top
The following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable: there shall be no discharge of process waste water pollutants to navigable waters.

ง 406.34 Pretreatment standards for existing sources.
top
Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to a publicly owned treatment works by a point source subject to the provisions of this subpart.

------------------------------------------------------------------------
Pollutant or pollutant property Pretreatment standard
------------------------------------------------------------------------
BOD5...................................... No limitation.
TSS....................................... Do.
------------------------------------------------------------------------

[40 FR 6436, Feb. 11, 1975, as amended at 60 FR 33936, June 29, 1995]

ง 406.35 Standards of performance for new sources.
top
The following standards of performance establish the quantity or quality of pollutants or pollutant properties which may be discharged by a new source subject to the provisions of this subpart: There shall be no discharge of process waste water pollutants to navigable waters.

ง 406.36 Pretreatment standards for new sources.
top
Any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403.

[60 FR 33936, June 29, 1995]

ง 406.37 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT): The limitations shall be the same as those specified for conventional pollutants (which are defined in ง401.16) in ง406.32 of this subpart for the best practicable control technology currently available (BPT).

[51 FR 24997, July 9, 1986]

Subpart D—Bulgur Wheat Flour Milling Subcategory
top
ง 406.40 Applicability; description of the bulgur wheat flour milling subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the process in which wheat is parboiled, dried, and partially debranned in the production of bulgur.

ง 406.41 Specialized definitions.
top
For the purpose of the subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

(b) The term wheat shall mean wheat delivered to a plant before processing.

(c) The term standard bushel shall mean a bushel of wheat weighing 60 pounds.

(d) The abbreviation MSBu shall mean 1,000 standard bushels.

ง 406.42 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
wheat)
-----------------------------
BOD5...................................... 0.025 0.0083
TSS....................................... 0.025 .0083
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per 1,000
stdbu of
wheat)
-----------------------------
BOD5...................................... 1.50 0.50
TSS....................................... 1.50 .50
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

[39 FR 10513, Mar. 20, 1974, as amended at 60 FR 33936, June 29, 1995]

ง 406.43 [Reserved]
top
ง 406.44 Pretreatment standards for existing sources.
top
Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to a publicly owned treatment works by a point source subject to the provisions of this subpart.

------------------------------------------------------------------------
Pollutant or pollutant property Pretreatment standard
------------------------------------------------------------------------
pH........................................ No limitation.
BOD5...................................... Do.
TSS....................................... Do.
------------------------------------------------------------------------

[40 FR 6436, Feb. 11, 1975, as amended at 60 FR 33936, June 29, 1995]

ง 406.45 Standards of performance for new sources.
top
The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this subpart:

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
wheat)
-----------------------------
BOD5...................................... 0.015 0.005
TSS....................................... 0.0099 .0033
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per 1,000
stdbu of
wheat)
-----------------------------
BOD5...................................... 0.90 0.30
TSS....................................... 0.60 .20
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

ง 406.46 Pretreatment standards for new sources.
top
Any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403.

[60 FR 33937, June 29, 1995]

ง 406.47 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT): The limitations shall be the same as those specified for conventional pollutants (which are defined in ง401.16) in ง406.42 of this subpart for the best practicable control technology currently available (BPT).

[51 FR 24997, July 9, 1986]

Subpart E—Normal Rice Milling Subcategory
top
ง 406.50 Applicability; description of the normal rice milling subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the process in which rice is cleaned and milled by dry processes.

ง 406.51 Specialized definitions.
top
For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

ง 406.52 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): There shall be no discharge of process waste water pollutants to navigable waters.

[60 FR 33937, June 29, 1995]

ง 406.53 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
top
The following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable: there shall be no discharge of process waste water pollutants to navigable waters.

ง 406.54 Pretreatment standards for existing sources.
top
Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to a publicly owned treatment works by a point source subject to the provisions of this subpart.

------------------------------------------------------------------------
Pollutant or pollutant property Pretreatment standard
------------------------------------------------------------------------
BOD5...................................... No limitation.
TSS....................................... Do.
------------------------------------------------------------------------

[40 FR 6436, Feb. 11, 1975, as amended at 60 FR 33937, June 29, 1995]

ง 406.55 Standards of performance for new sources.
top
The following standards of performance establish the quantity or quality of pollutants or pollutant properties which may be discharged by a new source subject to the provisions of this subpart: There shall be no discharge of process waste water pollutants to navigable waters.

ง 406.56 Pretreatment standards for new sources.
top
Any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403.

[60 FR 33937, June 29, 1995]

ง 406.57 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT): The limitations shall be the same as those specified for conventional pollutants (which are defined in ง401.16) in ง406.52 of this subpart for the best practicable control technology currently available (BPT).

[51 FR 24997, July 9, 1986]

Subpart F—Parboiled Rice Processing Subcategory
top
ง 406.60 Applicability; description of the parboiled rice processing subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the process in which rice is cleaned, cooked and dried before being milled.

ง 406.61 Specialized definitions.
top
For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

(b) The term “rice” shall mean rice delivered to a plant before processing.

(c) The abbreviation “cwt” shall mean hundred weight.

ง 406.62 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
rice)
-----------------------------
BOD5...................................... 0.42 0.14
TSS....................................... 0.24 .08
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per
hundredwei
ght of
rice)
-----------------------------
BOD5...................................... 0.042 0.014
TSS....................................... 0.024 .008
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

[39 FR 10513, Mar. 20, 1974, as amended at 60 FR 33937, June 29, 1995]

ง 406.63 [Reserved]
top
ง 406.64 Pretreatment standards for existing sources.
top
Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to a publicly owned treatment works by a point source subject to the provisions of this subpart.

------------------------------------------------------------------------
Pollutant or pollutant property Pretreatment standard
------------------------------------------------------------------------
pH........................................ No limitation.
BOD5...................................... Do.
TSS....................................... Do.
------------------------------------------------------------------------

[40 FR 6436, Feb. 11, 1975, as amended at 60 FR 33937, June 29, 1995]

ง 406.65 Standards of performance for new sources.
top
The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this subpart:

------------------------------------------------------------------------
Effluent limitations
-----------------------------
Average of daily
Effluent characteristic Maximum values for 30
for any 1 consecutive days
day shall not
exceed_
------------------------------------------------------------------------
Metric
units
(kilograms
per 1,000
kg of
rice)
-----------------------------
BOD5...................................... 0.21 0.07
TSS....................................... 0.09 .03
pH........................................ (\1\) (\1\)
-----------------------------
English
units
(pounds
per
hundredwei
ght of
rice)
-----------------------------
BOD5...................................... 0.021 0.007
TSS....................................... 0.009 .003
pH........................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range 6.0 to 9.0.

ง 406.66 Pretreatment standards for new sources.
top
Any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403.

[60 FR 33937, June 29, 1995]

ง 406.67 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT): The limitations shall be the same as those specified for conventional pollutants (which are defined in ง401.16) in ง406.62 of this subpart for the best practicable control technology currently available (BPT).

[51 FR 24997, July 9, 1986]

Subpart G—Animal Feed Subcategory
top
Source: 40 FR 918, Jan. 3, 1975, unless otherwise noted.

ง 406.70 Applicability; description of the animal feed subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the manufacturing of animal feeds (formula feed concentrate) using primarily grain and grain by-products which may be supplemented by proteins, pharmaceuticals, vitamins or mineral additives.

ง 406.71 Specialized definitions.
top
For the purpose of this subpart: The general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

ง 406.72 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
top
Except as provided in งง125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): There shall be no discharge of process waste water pollutants to navigable waters.

[60 FR 33937, June 29, 1995]

ง 406.73 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best availabletechnology economically achievable. (continued)