§ 421.302 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

§ 421.302 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:

(a) Chlorination off-gas wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of TiCl4 produced
Chromium (total)	0.412	0.168
Lead	0.393	0.187
Nickel	1.797	1.189
Titanium	0.880	0.384
Oil and grease	18.720	11.230
Total suspended solids	38.380	18.250
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(b) Chlorination area-vent wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of TiCl4 produced
Chromium (total)	0.412	0.168
Chromium (total)	0.458	0.187
Lead	0.437	0.208
Nickel	1.997	1.321
Titanium	0.978	0.426
Oil and grease	20.800	12.480
Total suspended solids	42.640	20.280
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(c) TiCl₄ handling wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of TiCl4 handled
Chromium (total)	0.082	0.034
Lead	0.079	0.037
Nickel	0.359	0.237
Titanium	0.176	0.077
Oil and grease	3.740	2.244
Total suspended solids	7.667	3.647
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(d) Reduction area wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium produced
Chromium (total)	18.170	7.435
Lead	17.350	8.261
Nickel	79.300	52.450
Titanium	38.820	16.930
Oil and grease	826.100	495.600
Total suspended solids	1,693.000	805.400
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(e) Melt cell wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium produced
Chromium (total)	9.352	3.826
Lead	8.927	4.251
Nickel	40.810	26.990
Titanium	19.980	8.714
Oil and grease	425.100	255.000
Total suspended solids	871.400	414.500
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(f) Chlorine liquefaction wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium produced
Chromium (total)	130.900	53.560
Lead	125.000	59.510
Nickel	571.300	377.900
Titanium	279.700	122.000
Oil and grease	5,951.000	3,571.000
Total suspended solids	12,200.000	5,702.000
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(g) Sodium reduction container reconditioning wash water.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium produced
Chromium (total)	0.564	0.231
Lead	0.538	0.256
Nickel	2.461	1.628
Titanium	1.205	0.526
Oil and grease	25.640	15.380
Total suspended solids	52.560	25.000
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(h) Chip crushing wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium produced
Chromium (total)	10.090	4.126
Lead	9.627	4.584
Nickel	44.010	29.110
Titanium	21.550	9.398
Oil and grease	458.400	275.100
Total suspended solids	939.800	447.000
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(i) Acid leachate and rinse water.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium produced
Chromium (total)	5.210	2.131
Lead	4.973	2.368
Nickel	22.730	15.040
Titanium	11.130	4.854
Oil and grease	236.800	142.100
Total suspended solids	485.400	230.900
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(j) Sponge crushing and screening wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium produced
Chromium (total)	2.847	1.165
Lead	2.717	1.294
Nickel	12.420	8.217
Titanium	6.082	2.653
Oil and grease	129.400	77.640
Total suspended solids	265.300	126.200
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(k) Acid pickle and wash water.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium pickled
Chromium (total)	0.027	0.011
Lead	0.026	0.012
Nickel	0.117	0.077
Titanium	0.057	0.025
Oil and grease	1.220	0.732
Total suspended solids	2.501	1.190
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(l) Scrap milling wet air pollution control.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of scrap milled
Chromium (total)	0.995	0.407
Lead	0.950	0.452
Nickel	4.341	2.871
Titanium	2.125	0.927
Oil and grease	45.220	27.130
Total suspended solids	92.700	44.090
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(m) Scrap detergent wash water.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of scrap washed
Chromium (total)	7.948	3.252
Lead	7.587	3.613
Nickel	34.680	22.940
Titanium	16.980	7.406
Oil and grease	361.300	216.800
Total suspended solids	740.600	352.300
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(n) Casting crucible wash water.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium cast
Chromium (total)	0.210	0.086
Lead	0.200	0.095
Nickel	0.916	0.606
Titanium	0.448	0.196
Oil and grease	9.540	5.724
Total suspended solids	19.560	9.302
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(o) Casting contact cooling water.

BPT Limitations for the Primary and Secondary Titanium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of titanium cast
Chromium (total)	321.100	131.400
Lead	306.500	145.900
Nickel	1,401.000	926.800
Titanium	685.900	299.200
Oil and grease	14,590.000	8,757.000
Total suspended solids	29,920.000	14,230.000
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.