Loading (50 kb)...'
(continued)
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
alkaline
cleaned
---------------------------
Chromium.................................... 0.002 0.0006
Copper...................................... 0.005 0.002
Cyanide..................................... 0.0007 0.0003
Zinc........................................ 0.004 0.002
Oil and grease.............................. 0.036 0.036
TSS......................................... 0.054 0.043
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(k) Alkaline cleaning rinse.
Subpart H_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
alkaline
cleaned
---------------------------
Chromium.................................... 0.626 0.259
Copper...................................... 2.17 1.03
Cyanide..................................... 0.338 0.135
Zinc........................................ 1.73 0.710
Oil and grease.............................. 16.9 16.9
TSS......................................... 25.4 20.3
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(l) Sawing or grinding spent emulsions.
Subpart H_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc sawed
or ground
with
emulsions
---------------------------
Chromium.................................... 0.009 0.004
Copper...................................... 0.031 0.015
Cyanide..................................... 0.005 0.002
Zinc........................................ 0.025 0.010
Oil and grease.............................. 0.235 0.235
TSS......................................... 0.357 0.286
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\Within the range of 7.5 to 10.0 at all times.
(m) Electrocoating rinse.
Subpart H_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
electrocoate
d
---------------------------
Chromium.................................... 0.085 0.035
Copper...................................... 0.293 0.140
Cyanide..................................... 0.046 0.019
Zinc........................................ 0.234 0.096
Oil and grease.............................. 2.29 2.29
TSS......................................... 3.44 2.75
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times
(n) Degreasing spent solvents—Subpart H—NSPS. There shall be no discharge of process wastewater pollutants.
[50 FR 34270, Aug. 23, 1985; 51 FR 2888, Jan. 22, 1986]
§ 471.84 Pretreatment standards for existing sources (PSES). [Reserved]
top
§ 471.85 Pretreatment standards for new sources (PSNS).
top
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 the wastewater introduced into a POTW shall not exceed the following values:
(a) Rolling spent neat oils—Subpart H—PSNS. There shall be no discharge of process wastewater pollutants.
(b) Rolling spent emulsions.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc rolled
with
emulsions
--------------------------
Chromium..................................... 0.0005 0.0002
Copper....................................... 0.002 0.0009
Cyanide...................................... 0.0003 0.0001
Zinc......................................... 0.002 0.0006
------------------------------------------------------------------------
(c) Rolling contact cooling water.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc rolled
with
contact
cooling
water
-------------------------
Chromium...................................... 0.020 0.008
Copper........................................ 0.069 0.033
Cyanide....................................... 0.011 0.004
Zinc.......................................... 0.055 0.023
------------------------------------------------------------------------
(d) Drawing spent emulsions.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc drawn
with
emulsions
--------------------------
Chromium..................................... 0.002 0.0009
Copper....................................... 0.008 0.004
Cyanide...................................... 0.001 0.0005
Zinc......................................... 0.006 0.003
------------------------------------------------------------------------
(e) Direct chill casting contact cooling water.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc cast
by the
direct
chill
method
-------------------------
Chromium...................................... 0.019 0.008
Copper........................................ 0.065 0.031
Cyanide....................................... 0.010 0.004
Zinc.......................................... 0.052 0.021
------------------------------------------------------------------------
(f) Stationary casting contact cooling water—Subpart H—PSNS. There shall be no discharge of process wastewater pollutants.
(g) Heat treatment contact cooling water.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc heat
treated
-------------------------
Chromium...................................... 0.029 0.012
Copper........................................ 0.098 0.047
Cyanide....................................... 0.016 0.006
Zinc.......................................... 0.078 0.032
------------------------------------------------------------------------
(h) Surface treatment spent baths.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
surface
treated
-------------------------
Chromium...................................... 0.033 0.014
Copper........................................ 0.114 0.054
Cyanide....................................... 0.018 0.007
Zinc.......................................... 0.091 0.038
------------------------------------------------------------------------
(i) Surface treatment rinse.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
surface
treated
-------------------------
Chromium...................................... 0.133 0.054
Copper........................................ 0.459 0.219
Cyanide....................................... 0.072 0.029
Zinc.......................................... 0.365 0.151
------------------------------------------------------------------------
(j) Alkaline cleaning spent baths.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
alkaline
cleaned
--------------------------
Chromium..................................... 0.002 0.0006
Copper....................................... 0.005 0.002
Cyanide...................................... 0.0007 0.0003
Zinc......................................... 0.004 0.002
------------------------------------------------------------------------
(k) Alkaline cleaning rinse.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
alkaline
cleaned
---------------------------
Chromium.................................... 0.626 0.254
Copper...................................... 2.17 1.03
Cyanide..................................... 0.338 0.134
Zinc........................................ 1.73 0.710
------------------------------------------------------------------------
(l) Sawing or grinding spent emulsions.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc sawed
or ground
with
emulsions
-------------------------
Chromium...................................... 0.009 0.004
Copper........................................ 0.031 0.015
Cyanide....................................... 0.005 0.002
Zinc.......................................... 0.025 0.010
------------------------------------------------------------------------
(m) Electrocoating rinse.
Subpart H_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zinc
electrocoat
ed
-------------------------
Chromium...................................... 0.085 0.035
Copper........................................ 0.293 0.140
Cyanide....................................... 0.046 0.019
Zinc.......................................... 0.234 0.096
------------------------------------------------------------------------
(n) Decreasing spent solvents—Subpart H—PSNS. There shall be no discharge of process wastewater pollutants.
[50 FR 34270, Aug. 23, 1985; 51 FR 2888, Jan. 22, 1986]
§ 471.86 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). [Reserved]
top
Subpart I—Zirconium-Hafnium Forming Subcategory
top
§ 471.90 Applicability; description of the zirconium-hafnium forming subcategory.
top
This subpart applies to discharges of pollutants to waters of the United States, and introductions of pollutants into publicly owned treatment works from the process operations of the zirconium-hafnium forming subcategory.
§ 471.91 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
top
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
(a) Rolling spent neat oils—Subpart I—BPT. There shall be no discharge of process wastewater pollutants.
(b) Drawing spent lubricants—Subpart I—BPT. There shall be no discharge of process wastewater pollutants.
(c) Extrusion spend emulsions—Subpart I—BPT. There shall be no discharge of process wastewater pollutants.
(d) Extrusion press hydraulic fluid leakage.
Subpart I_BPT
------------------------------------------------------------------------
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
Oil and grease.............................. 4.74 2.85
TSS......................................... 9.72 4.62
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(e) Swaging spent neat oils—Subpart I—BPT. There shall be no discharge of process wastewater pollutants.
(f) Heat treatment contact cooling water.
Subpart I_BPT
------------------------------------------------------------------------
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.................................... 0.151 0.062
Cyanide..................................... 0.100 0.041
Nickel...................................... 0.659 0.436
Ammonia..................................... 45.7 20.1
Fluoride.................................... 20.4 9.06
Oil and grease.............................. 6.86 4.12
TSS......................................... 14.1 6.69
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(g) Tube Reducing Spent Lubricant—Subpart I—BPT.
(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) of this section 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 NPDES issuing 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.
Subpart I_BPT
------------------------------------------------------------------------
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 0.61
Cyanide..................................... 0.099 0.041
Nickel...................................... 0.653 0.432
Ammonia..................................... 45.3 20
Fluoride.................................... 20.3 8.98
Oil and grease.............................. 6.80 4.08
TSS......................................... 14 6.63
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(i) Surface treatment rinse.
Subpart I_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zirkonium-
hafnium
surface
treated
---------------------------
Chromium.................................... 3.91 1.60
Cyanide..................................... 2.58 1.07
Nickel...................................... 17.1 11.3
Ammonia..................................... 1,190 521
Fluoride.................................... 529 235
Oil and grease.............................. 178 107
TSS......................................... 364 173
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(j) Alkaline cleaning spent baths.
Subpart I_BPT
------------------------------------------------------------------------
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
Oil and grease.............................. 32 19.2
TSS......................................... 65.6 31.2
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(k) Alkaline cleaning rinse.
Subpart I_BPT
------------------------------------------------------------------------
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.................................... 13.8 5.65
Cyanide..................................... 9.11 3.77
Nickel...................................... 60.3 39.9
Ammonia..................................... 4,190 1,840
Fluoride.................................... 1,870 829
Oil and grease.............................. 628 377
TSS......................................... 1,290 613
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(l) Sawing or grinding spent emulsions.
Subpart I_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zirconium-
hafnium
sawed or
ground with
emulsions
---------------------------
Chromium.................................... 0.124 0.051
Cyanide..................................... 0.082 0.034
Nickel...................................... 0.540 0.357
Ammonia..................................... 37.5 16.5
Fluoride.................................... 16.7 7.42
Oil and grease.............................. 5.62 3.37
TSS......................................... 11.5 5.48
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(m) Wet air pollution control scrubber blowdown—Subpart I—BPT. There shall be no allowance for the discharge of process wastewater pollutants.
(n) Degreasing spent solvents—Subpart I—BPT. There shall be no discharge of process wastewater pollutants.
(o) Degreasing rinse—Subpart I—BPT. There shall be no discharge or process wastewater pollutants.
(p) Molten salt rinse.
Subpart I_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthy
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off
pounds) of
zirconium-
hafnium
treated with
molten salt
---------------------------
Chromium.................................... 3.33 1.360
Cyanide..................................... 2.20 0.907
Nickel...................................... 14.5 9.60
Ammonia..................................... 1,010 443
Fluoride.................................... 450 200
Oil and grease.............................. 151 90.7
TSS......................................... 310 148
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(q) Sawing or grinding contact cooling water.
Subpart I_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
zirconium-
hafnium
sawed or
ground with
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
Oil and grease.............................. 6.42 3.85
TSS......................................... 13.2 6.26
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(r) Sawing on grinding rinse.
Subpart I_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
sawed or
ground
zirconium
hafnium
rinsed
---------------------------
Chromium.................................... 0.792 0.324
Cyanide..................................... 0.522 0.216
Nickel...................................... 3.46 2.29
Ammonia..................................... 240 106
Fluoride.................................... 107 47.5
Oil and grease.............................. 36 21.6
TSS......................................... 73.8 35.1
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(s) Sawing or grinding spent neat oils—Subpart I—BPT. There shall be no discharge of process wastewater pollutants.
(t) Inspection and testing wastewater.
Subpart I_BPT
------------------------------------------------------------------------
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
Oil and grease.............................. 0.308 0.185
TSS......................................... 0.632 0.301
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.05 to 10.0 at all times.
[50 FR 34270, Aug. 23, 1985; 51 FR 2888, Jan. 22, 1986, as amended at 54 FR 11350, Mar. 17, 1989]
§ 471.92 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
top
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT):
(a) Rolling spent neat oils—Subpart I—BAT. There shall be no discharge of process wastewater pollutants.
(b) Drawing spent lubricants—Subpart I—BAT. There shall be no discharge of process wastewater pollutants.
(c) Extrusion spent emulsions—Subpart I—BAT. There shall be no discharge of process wastewater pollutants.
(d) Extrusion press hydraulic fluid leakage.
Subpart I_BAT
------------------------------------------------------------------------
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.—There shall be no discharge of process wastewater pollutants.
(f) Heat treatment contact cooling water.
Subpart I_BAT
------------------------------------------------------------------------
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—BAT.
(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 paragraph (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 paragraph (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) of this section 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 foregoingnitrosamine compounds is present in the process wastewater at concentrations greater than those specified in paragraph (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: (continued)