Section

[Code of Federal Regulations]
[Title 40, Volume 27]
[Revised as ofJuly 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR471.95]

[Page 792-795]

TITLE 40--PROTECTION OF ENVIRONMENT

CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

PART 471--NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY--Table of Contents

Subpart I--Zirconium-Hafnium Forming Subcategory

Sec. 471.95 Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, any new 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 new sources (PSNS). The mass of wastewater
shall not exceed the following:
(a) Rolling spent neat oils--Subpart I--PSNS. There shall be no
discharge of process wastewater pollutants.
(b) Drawing spent lubricants--Subpart I--PSNS. There shall be no
discharge of process wastewater pollutants.
(c) Extrusion spent emulsions--Subpart I--PSNS. There shall be no
discharge of process wastewater pollutants.
(d) Extrusion press hydraulic fluid leakage.

[[Page 793]]

Subpart I--PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
zirconium-hafnium extruded
---------------
Chromium.................................... 0.104 0.043
Cyanide..................................... 0.069 0.029
Nickel...................................... 0.455 0.301
Ammonia..................................... 31.6 13.9
Fluoride.................................... 14.1 6.26
------------------------------------------------------------------------

(e) Swaging spent neat oils--Subpart I--PSNS. There shall be no
discharge of process wastewater pollutants.
(f) Heat treatment contact cooling water.

Subpart I--PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off/kg (pounds per
million off-pounds) of
zirconium-hafnium heat
treated
---------------
Chromium.................................... 0.015 0.006
Cyanide..................................... 0.010 0.004
Nickel...................................... 0.066 0.044
Ammonia..................................... 4.57 2.01
Fluoride.................................... 2.04 0.906
------------------------------------------------------------------------

(g) Tube Reducing Spent Lubricant--Subpart I--PSNS.
(1) There shall be no discharge of process wastewater pollutants
except as provided under paragraph (g)(2) of this section.
(2) Process wastewater pollutants may be discharged, with no
allowance for any pollutants discharged, provided the facility owner or
operator demonstrates, on the basis of analytical methods set forth in
or approved pursuant to 40 CFR part 136, that the concentrations of
nitrosamine compounds in the wastewater discharged from the tube
reducing process do not exceed 0.050 mg/l of N-nitrosodimethylamine,
0.020 mg/l of N-nitrosodiphenylamine, and 0.020 mg/l of N-nitrosodi-n-
propylamine.
(3) The demonstration required under subparagraph (g)(2) of this
section shall be made once per month until the demonstration has been
made for all three nitrosamine compounds for six consecutive months,
after which time the demonstration may be made once per quarter. If a
sample is found to contain any of the foregoing nitrosamine compounds at
concentrations greater than those specified in subparagraph (g)(2) of
this section, the actions described in paragraph (g)(4) of this section
shall be taken, and the demonstration required under paragraph (g)(2)
shall be made once per month until it has been made for all three
nitrosamine compounds for six consecutive months.
(4) If sampling results show that any of the foregoing nitrosamine
compounds is present in the process wastewater at concentrations greater
than those specified in subparagraph (g)(2) of this section, the
facility owner or operator shall ensure that, within thirty days of
receiving written notification of the sampling results, there is no
further discharge of tube reducing spent lubricant wastewater until the
owner or operator:
(i) Performs a subsequent analysis which demonstrates that the
concentrations of the foregoing nitrosamine compounds do not exceed the
levels specified in paragraph (g)(2) of this section; or
(ii) Substitutes a new tube reducing lubricant and thereafter
complies with the requirements of paragraph (g)(3) of this section; or
(iii) Determines the source of the pollutant whose concentration
exceeded the level specified in paragraph (g)(2) of this section and
demonstrates to the satisfaction of the POTW control authority that such
source has been eliminated.
(5) The concentration limits specified in paragraph (g)(2) of this
section apply at the point of discharge from the tube reducing process.
However, sampling after the tube reducing wastewater has been commingled
with other wastewaters is permitted if:
(i) Any dilution caused by the other wastewaters is taken into
account in determining the appropriate (i.e., lower) allowable discharge
concentration; and
(ii) An analytical method of sufficient sensitivity is used to
measure the levels of each of the foregoing nitrosamine compounds in the
wastewaters being sampled.
(h) Surface treatment spent baths.

[[Page 794]]

Subpart I--PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off/kg (pounds per
million off-pounds) of
zirconium-hafnium surface
treated
---------------
Chromium.................................... 0.150 0.061
Cyanide..................................... 0.099 0.041
Nickel...................................... 0.653 0.432
Ammonia..................................... 45.3 20
Fluoride.................................... 20 8.98
------------------------------------------------------------------------

(i) Surface treatment rinse.

Subpart I--PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off/kg (pounds per
million off-pounds) of
zirconium-hafnium surface
treated
---------------
Chromium.................................... 0.391 0.160
Cyanide..................................... 0.258 0.107
Nickel...................................... 1.71 1.13
Ammonia..................................... 119 52.1
Fluoride.................................... 52.9 23.5
------------------------------------------------------------------------

(j) Alkaline cleaning spent baths.

Subpart I--PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off/kg (pounds per
million off-pounds) of
zirconium-hafnium alkaline
cleaned
---------------
Chromium.................................... 0.704 0.288
Cyanide..................................... 0.464 0.192
Nickel...................................... 3.07 2.03
Ammonia..................................... 214 93.8
Fluoride.................................... 95.2 42.3
------------------------------------------------------------------------

(k) Alkaline cleaning rinse.

Chromium.................................... 1.38 0.565
Cyanide..................................... 0.911 0.377
Nickel...................................... 6.03 3.99
Ammonia..................................... 419 184
Fluoride.................................... 187 82.9
------------------------------------------------------------------------

(l) Sawing or grinding spent emulsions.

Chromium.................................... 0.124 0.051
Cyanide..................................... 0.082 0.034
Nickel...................................... 0.540 0.357
Ammonia..................................... 37.5 16.50
Fluoride.................................... 16.7 7.42
------------------------------------------------------------------------

(m) Wet air pollution control scrubber blowdown--Subpart I--PSNS.
There shall be no allowance for the discharge of process wastewater
pollutants.
(n) Degreasing spent solvents--Subpart I--PSNS. There shall be no
discharge of process wastewater pollutants.
(o) Degreasing rinse--Subpart I--PSNS. There shall be no discharge
of process wastewater pollutants.
(p) Molten salt rinse.

Chromium.................................... 0.333 0.136
Cyanide..................................... 0.220 0.091
Nickel...................................... 1.45 0.960
Ammonia..................................... 101 44.3
Fluoride.................................... 45.0 20.0
------------------------------------------------------------------------

(q) Sawing or grinding contact cooling water.

Chromium.................................... 0.142 0.058
Cyanide..................................... 0.093 0.039
Nickel...................................... 0.617 0.408
Ammonia..................................... 42.8 18.8
Fluoride.................................... 19.1 8.48
------------------------------------------------------------------------

(r) Sawing or grinding rinse.

[[Page 795]]

Chromium.................................... 0.079 0.033
Cyanide..................................... 0.052 0.022
Nickel...................................... 0.346 0.229
Ammonia..................................... 24.0 10.6
Fluoride.................................... 10.7 4.75
------------------------------------------------------------------------

(s) Sawing or grinding spent neat oils--Subpart I--PSNS. There shall
be no discharge of process wastewater pollutants.
(t) Inspection and testing wastewater.

Subpart I--PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
zirconium-hafnium tested
---------------
Chromium..................................... 0.007 0.003
Cyanide...................................... 0.005 0.002
Nickel....................................... 0.030 0.020
Ammonia...................................... 2.06 0.903
Fluoride..................................... 0.917 0.407
------------------------------------------------------------------------

[50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986, as amended at 54
FR 11352, Mar. 17, 1989]