Regulations last checked for updates: Oct 31, 2024

Title 40 - Protection of Environment last revised: Oct 29, 2024
§ 437.46 - Pretreatment standards for existing sources (PSES).

(a) Except as provided in 40 CFR 403.7, § 403.13 or § 437.40(b), any new source subject to this subpart which combines treated or untreated wastes from subparts A, B, or C of this part may be subject to Multiple Wastestream Subcategory pretreatment standards representing the application of PSES set forth in paragraphs (b), (c), (d), or (e) of this section if the discharger agrees to the following conditions in its permit:

(1) The discharger will meet the applicable Multiple Wastestream

Subcategory standards set forth in paragraphs (b), (c), (d) or (e) of this section;

(2) The discharger will notify its local control authority of its desire to be subject to the Multiple Waste Subcategory by submitting to the local control authority an initial certification statement as described in § 437.41(a);

(3) The discharger will submit to its local control authority a periodic certification statement as described in § 437.41(b) once a year; and

(4) The discharger will maintain at the office of the facility and make available for inspection the on-site compliance paperwork as described in § 437.41(c).

(b) Combined waste receipts from subparts A, B and C of this part. (1) As provided in § 437.46(a), and no later than [Insert date—three years after publication], any existing source subject to this paragraph must achieve the following pretreatment standards:

Pretreatment Standards (PSES)

Regulated
parameter
Maximum daily 1 Maximum monthly avg. 1
Metal Parameters
Antimony0.2490.206
Arsenic0.1620.104
Cadmium0.4740.0962
Chromium0.9470.487
Cobalt0.1920.124
Copper0.4050.301
Lead0.2220.172
Mercury0.002340.000739
Nickel3.951.45
Silver0.1200.0351
Tin0.4090.120
Titanium0.09470.0618
Vanadium0.2180.0662
Zinc2.870.641
Organic Parameters
Bis(2-ethylhexyl) phthalate0.2670.158
Carbazole0.3920.233
o-Cresol1.920.561
p-Cresol0.6980.205
n-Decane5.793.31
Fluoranthene0.7870.393
n-Octadecane1.220.925
2,4,6-Trichlorophenol0.1550.106

1 mg/L (ppm).

(2) The following in-plant limitations apply to metal-bearing wastewater containing cyanide:

In-Plant Limitations

Regulated
parameter
Maximum daily 1 Maximum monthly avg. 1
Cyanide500178

1 mg/L (ppm).

(c) Combined waste receipts from subparts A and B of this part. (1) As provided in § 437.46(a), and no later than December 22, 2003, any existing source subject to this paragraph must achieve the following pretreatment standards:

Pretreatment Standards (PSES)

Regulated
parameter
Maximum daily 1 Maximum monthly avg. 1
Metal Parameters
Antimony0.2490.206
Arsenic0.1620.104
Cadmium0.4740.0962
Chromium0.9470.487
Cobalt0.1920.124
Copper0.4050.301
Lead0.2220.172
Mercury0.002340.000739
Nickel3.951.45
Silver0.1200.0351
Tin0.4090.120
Titanium0.09470.0618
Vanadium0.2180.0662
Zinc2.870.641
Organic Parameters
Bis(2-ethylhexyl) phthalate0.2670.158
Carbazole0.3920.233
n-Decane5.793.31
Fluoranthene0.7870.393
n-Octadecane1.220.925

1 mg/L (ppm).

(2) The following in-plant limitations apply to metal-bearing wastewater containing cyanide:

In-Plant Limitations

Regulated
parameter
Maximum daily 1 Maximum monthly avg. 1
Cyanide500178

1 mg/L (ppm).

(d) Combined waste receipts from subparts A and C of this part. (1) As provided in § 437.46(a), and no later than December 22, 2003, any existing source subject to this paragraph must achieve the following pretreatment standards:

Pretreatment Standards (PSES)

Regulated
parameter
Maximum daily 1 Maximum monthly avg. 1
Metal Parameters
Antimony0.2490.206
Arsenic0.1620.104
Cadmium0.4740.0962
Chromium15.53.07
Cobalt0.1920.124
Copper4.141.06
Lead1.320.283
Mercury0.002340.000739
Nickel3.951.45
Silver0.1200.0351
Tin0.4090.120
Titanium0.09470.0618
Vanadium0.2180.0662
Zinc2.870.641
Organic Parameters
o-Cresol1.920.561
p-Cresol0.6980.205
2,4,6-Trichlorophenol0.1550.106

1 mg/L (ppm).

(2) The following in-plant limitations apply to metal-bearing wastewater containing cyanide:

In-Plant Limitations

Regulated
parameter
Maximum daily 1 Maximum monthly avg. 1
Cyanide500178

1 mg/L (ppm).

(e) Combined waste receipts from subparts B and C of this part. As provided in § 437.46(a), and no later than December 22, 2003, any existing source subject to this paragraph must achieve the following pretreatment standards:

Pretreatment Standards (PSES)

Regulated
parameter
Maximum daily 1 Maximum monthly avg. 1
Metal Parameters
Chromium0.9470.487
Cobalt56.418.8
Copper0.4050.301
Lead0.2220.172
Tin0.2490.146
Zinc6.954.46
Organic Parameters
Bis (2-ethylhexyl) phthalate0.2670.158
Carbazole0.3920.233
o-Cresol1.920.561
p-Cresol0.6980.205
n-Decane5.793.31
Fluoranthene0.7870.393
n-Octadecane1.220.925
2,4,6-Trichlorophenol0.1550.106

1 mg/L (ppm).

[65 FR 81300, Dec. 22, 2000, as amended at 68 FR 71025, Dec. 22, 2003]
source: 65 FR 81300, Dec. 22, 2000, unless otherwise noted.
cite as: 40 CFR 437.46