CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 437—THE CENTRALIZED WASTE TREATMENT POINT SOURCE CATEGORY > SUBPART A—Metals Treatment and Recovery (§437.10 to §437.16) > 437.14—New source performance standards (NSPS).

437.14—New source performance standards (NSPS).

(a) Except as provided in § 437.10(b), any new source subject to this subpart must achieve the following performance standards:
Performance Standards
Regulatedparameter Maximum daily 1 Maximum monthly avg. 1
Contentional Parameters
O&G 205 50.2
pH (2) (2)
TSS 29.6 11.3
Metal Parameters
Antimony 0.111 0.0312
Arsenic 0.0993 0.0199
Cadmium 0.782 0.163
Chromium 0.167 0.0522
Cobalt 0.182 0.0703
Copper 0.659 0.216
Lead 1.32 0.283
Mercury 0.000641 0.000246
Nickel 0.794 0.309
Selenium 0.176 0.0698
Silver 0.0318 0.0122
Tin 0.0955 0.0367
Titanium 0.0159 0.00612
Vanadium 0.0628 0.0518
Zinc 0.657 0.252
1 mg/L (ppm).
2 Within the range 6 to 9.
(b) In-plant standards for cyanide are the same as the limitations specified in § 437.11(b).
(a) Except as provided in § 437.10(b), any new source subject to this subpart must achieve the following performance standards:
Performance Standards
Regulatedparameter Maximum daily 1 Maximum monthly avg. 1
Contentional Parameters
O&G 205 50.2
pH (2) (2)
TSS 29.6 11.3
Metal Parameters
Antimony 0.111 0.0312
Arsenic 0.0993 0.0199
Cadmium 0.782 0.163
Chromium 0.167 0.0522
Cobalt 0.182 0.0703
Copper 0.659 0.216
Lead 1.32 0.283
Mercury 0.000641 0.000246
Nickel 0.794 0.309
Selenium 0.176 0.0698
Silver 0.0318 0.0122
Tin 0.0955 0.0367
Titanium 0.0159 0.00612
Vanadium 0.0628 0.0518
Zinc 0.657 0.252
1 mg/L (ppm).
2 Within the range 6 to 9.
(b) In-plant standards for cyanide are the same as the limitations specified in § 437.11(b).