40 CFR 423.17 - Pretreatment standards for new sources (PSNS).

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§ 423.17 Pretreatment standards for new sources (PSNS).

(a)1982 PSNS. Except as provided in 40 CFR 403.7, any new source as of October 14, 1980, subject to paragraph (a) of this section, which introduces pollutants into a publicly owned treatment works, must comply with 40 CFR part 403, the following pretreatment standards for new sources, and the PSES in § 423.16, established on November 3, 2015. In the case of conflict, the more stringent standards apply:

(1)PCBs. There shall be no discharge of polychlorinated biphenyl compounds such as those used for transformer fluid.

(2)Chemical metal cleaning wastes. The pollutants discharged in chemical metal cleaning wastes shall not exceed the concentration listed in the following table:

Pollutant or pollutant property PSNS
Maximum for any 1 day
(mg/L)
Copper, total 1.0

(3) [Reserved]

(4)

(i)Cooling tower blowdown. The pollutants discharged in cooling tower blowdown shall not exceed the concentration listed in the following table:

Pollutant or pollutant property PSNS
Maximum for any time
(mg/L)
The 126 priority pollutants (appendix A) contained in chemicals added for cooling tower maintenance, except: ( 1)
Chromium, total 0.2
zinc, total 1.0

1 No detectable amount.

(ii) At the permitting authority's discretion, instead of the monitoring in 40 CFR 122.11(b), compliance with the standards for the 126 priority pollutants in paragraph (a)(4)(i) of this section may be determined by engineering calculations which demonstrate that the regulated pollutants are not detectable in the final discharge by the analytical methods in 40 CFR part 136.

(5)Fly ash transport water. There shall be no discharge of wastewater pollutants from fly ash transport water.

(b)2015 PSNS. Except as provided in 40 CFR 403.7, any new source as of June 7, 2013, subject to this paragraph (b), which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and the following pretreatment standards for new sources:

(1)PCBs. There shall be no discharge of polychlorinated biphenyl compounds such as those used for transformer fluid.

(2)Chemical metal cleaning wastes. The pollutants discharged in chemical metal cleaning wastes shall not exceed the concentration listed in the following table:

Pollutant or pollutant property PSNS
Maximum for 1 day
(mg/L)
Copper, total 1.0

(3) [Reserved]

(4)

(i)Cooling tower blowdown. The pollutants discharged in cooling tower blowdown shall not exceed the concentration listed in the following table:

Pollutant or pollutant property PSNS
Maximum for any time
(mg/L)
The 126 priority pollutants (appendix A) contained in chemicals added for cooling tower maintenance, except: ( 1)
Chromium, total 0.2
zinc, total 1.0

1 No detectable amount.

(ii) At the permitting authority's discretion, instead of the monitoring in 40 CFR 122.11(b), compliance with the standards for the 126 priority pollutants in paragraph (b)(4)(i) of this section may be determined by engineering calculations which demonstrate that the regulated pollutants are not detectable in the final discharge by the analytical methods in 40 CFR part 136.

(5)Fly ash transport water. There shall be no discharge of pollutants in fly ash transport water. Whenever fly ash transport water is used in any other plant process or is sent to a treatment system at the plant, the resulting effluent must comply with the discharge standard in this paragraph.

(6)FGD wastewater. The quantity of pollutants discharged in FGD wastewater shall not exceed the quantity determined by multiplying the flow of FGD wastewater times the concentration listed in the following table:

Pollutant or pollutant property PSNS
Maximum for
any 1 day
Average of daily
values for 30
consecutive days
shall not exceed
Arsenic, total (µg/L) 4
Mercury, total (ng/L) 39 24
Selenium, total (µg/L) 5
TDS (mg/L) 50 24

(7)Flue gas mercury control wastewater. There shall be no discharge of pollutants in flue gas mercury control wastewater. Whenever flue gas mercury control wastewater is used in any other plant process or is sent to a treatment system at the plant, the resulting effluent must comply with the discharge standard in this paragraph.

(8)Bottom ash transport water. There shall be no discharge of pollutants in bottom ash transport water. Whenever bottom ash transport water is used in any other plant process or is sent to a treatment system at the plant, the resulting effluent must comply with the discharge standard in this paragraph.

(9)Gasification wastewater. The quantity of pollutants discharged in gasification wastewater shall not exceed the quantity determined by multiplying the flow of gasification wastewater times the concentration listed in the following table:

Pollutant or pollutant property PSNS
Maximum for
any 1 day
Average of daily
values for 30
consecutive days
shall not exceed
Arsenic, total (µg/L) 4
Mercury, total (ng/L) 1.8 1.3
Selenium, total (µg/L) 453 227
Total dissolved solids (mg/L) 38 22

(10)Combustion residual leachate. The quantity of pollutants discharged in combustion residual leachate shall not exceed the quantity determined by multiplying the flow of combustion residual leachate times the concentration listed in the following table:

Pollutant or pollutant property PSNS
Maximum for
any 1 day
Average of daily
values for 30
consecutive days
shall not exceed
Arsenic, total (µg/L) 11 8
Mercury, total (ng/L) 788 356
[ 80 FR 67902, Nov. 3, 2015]

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].

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United States Code
Statutes at Large

Title 40 published on 09-Jun-2018 05:24

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 423 after this date.

  • 2017-09-18; vol. 82 # 179 - Monday, September 18, 2017
    1. 82 FR 43494 - Postponement of Certain Compliance Dates for the Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      The final rule is effective September 18, 2017. In accordance with 40 CFR part 23, this regulation shall be considered issued for purposes of judicial review at 1 p.m. Eastern Standard Time on October 2, 2017. Under section 509(b)(1) of the CWA, judicial review of this regulation can be had only by filing a petition for review in the U.S. Court of Appeals within 120 days after the regulation is considered issued for purposes of judicial review. Under section 509(b)(2), the requirements in this regulation may not be challenged later in civil or criminal proceedings brought by EPA to enforce these requirements.
      40 CFR Part 423