Regulations last checked for updates: May 17, 2024

Title 40 - Protection of Environment last revised: May 15, 2024
§ 439.15 - New source performance standards (NSPS).

(a) Any new source subject to this subpart must achieve the following standards:

Performance Standards (NSPS)

Regulated parameter Maximum daily 1 Maximum monthly average 1
BOD5267111
TSS472166
COD1675856
Ammonia (as N)84.129.4
Acetone0.50.2
4-methyl-2-pentanone0.50.2
Isobutyraldehyde1.20.5
n-Amyl acetate1.30.5
n-Butyl acetate1.30.5
Ethyl acetate1.30.5
Isopropyl acetate1.30.5
Methyl formate1.30.5
Amyl alcohol10.04.1
Ethanol10.04.1
Isopropanol3.91.6
Methanol10.04.1
Methyl Cellosolve100.040.6
Dimethyl sulfoxide91.537.5
Triethyl amine250.0102.0
Phenol0.050.02
Benzene0.050.02
Toluene0.060.02
Xylenes0.030.01
n-Hexane0.030.02
n-Heptane0.050.02
Methylene chloride0.90.3
Chloroform0.020.13
1,2-dichloroethane0.40.1
Chlorobenzene0.150.06
o-Dichlorobenzene0.150.06
Tetrahydrofuran8.42.6
Isopropyl ether8.42.6
Diethyl amine250.0102.0
Acetonitrile25.010.2

1 mg/L (ppm)

(b) The limitations for cyanide are the same as specified in § 439.12(e), (f) and (g).

(c) Any new source subject to the provisions of this section that commenced discharging after November 21, 1988, and prior to November 20, 1998, must continue to achieve the standards specified for this section in the 1988 edition of 40 CFR part 439, until the expiration of the applicable time period specified in 40 CFR 122.29(d)(1), after which the source must achieve the standards specified in §§ 439.13 and 439.14.

[68 FR 12272, Mar. 13, 2003]
source: 48 FR 49821, Oct. 27, 1983, unless otherwise noted.
cite as: 40 CFR 439.15