40 CFR 421.295 - Pretreatment standards for existing sources.

§ 421.295 Pretreatment standards for existing sources.
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in secondary tin process wastewater introduced into a POTW must not exceed the following values:
(a) Tin smelter SO2 scrubber.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of crude tapped tin produced
Arsenic 12.790 5.703
Lead 2.575 1.196
Iron 11.040 5.611
Tin 3.495 2.024
(b) Dealuminizing rinse.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of dealuminized scrap produced
Lead 0.010 0.005
Cyanide (total) 0.007 0.003
Fluoride 1.225 0.697
Tin 0.013 0.008
(c) Tin mud acid neutralization filtrate.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of neutralized dewatered tin mud produced
Lead 1.413 0.656
Cyanide (total) 1.009 0.404
Fluoride 176.600 100.400
Tin 1.918 1.110
(d) Tin hydroxide wash.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tin hydroxide washed
Lead 3.347 1.554
Cyanide (total) 2.391 0.956
Fluoride 418.400 237.900
Tin 4.542 2.630
(e) Spent electrowinning solution from new scrap.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of cathode tin produced
Lead 4.704 2.184
Cyanide (total) 3.360 1.344
Fluoride 588.000 334.300
Tin 6.384 3.696
(f) Spent electrowinning solution from municipal solid waste.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of MSW scrap used as raw material
Lead 0.033 0.015
Cyanide (total) 0.024 0.010
Fluoride 4.165 2.368
Tin 0.045 0.026
(g) Tin hydroxide supernatant from scrap.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tin metal recovered from scrap
Lead 15.580 7.233
Cyanide (total) 11.130 4.451
Fluoride 1,947.000 1,107.000
Tin 21.140 12.240
(h) Tin hydroxide supernatant from plating solutions and sludges.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tin metal recovered from plating solutions and sludges
Lead 32.20 14.95
Cyanide (total) 23.00 9.20
Fluoride 4,025.00 2,289.00
Tin 43.70 25.30
(i) Tin hydroxide filtrate.
PSES for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tin metal produced
Lead 7.012 3.256
Cyanide (total) 5.009 2.004
Fluoride 876.500 498.400
Tin 9.517 5.510

Title 40 published on 2013-07-01

no entries appear in the Federal Register after this date.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code
Statutes at Large
Public Laws