Part 420 — Iron and Steel Manufacturing Point Source Category

• § 420.01— Applicability.
• § 420.02— General definitions.
• § 420.03— Alternative effluent limitations representing the degree of effluent reduction attainable by the application of best practicable control technology currently available, best available technology economically achievable, best available demonstrated control technology, and best conventional pollutant control technology (the “water bubble”).
• § 420.04— Calculation of pretreatment standards.
• § 420.05— Pretreatment standards compliance date.
• § 420.06— Removal credits for phenols (4AAP).
• § 420.07— Effluent limitations guidelines and standards for pH.
• § 420.08— Non-process wastewater and storm water.

Subpart A — Cokemaking Subcategory

• § 420.10— Applicability.
• § 420.11— Specialized definitions.
• § 420.12— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.13— Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.14— New source performance standards (NSPS).
• § 420.15— Pretreatment standards for existing sources (PSES).
• § 420.16— Pretreatment standards for new sources (PSNS).
• § 420.17— Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).
• § 420.18— Pretreatment standards compliance dates.

Subpart B — Sintering Subcategory

• § 420.20— Applicability; description of the sintering subcategory.
• § 420.21— Specialized definitions.
• § 420.22— Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.23— Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.24— New source performance standards (NSPS).
• § 420.25— Pretreatment standards for existing sources (PSES).
• § 420.26— Pretreatment standards for new sources (PSNS).
• § 420.28— Pretreatment standards compliance dates.
• § 420.29— Point of compliance monitoring.

Subpart C — Ironmaking Subcategory

• § 420.30— Applicability; description of the ironmaking subcategory.
• § 420.31— Specialized definitions.
• § 420.32— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.33— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.34— New source performance standards (NSPS).
• § 420.35— Pretreatment standards for existing sources (PSES).
• § 420.36— Pretreatment standards for new sources (PSNS).

Subpart D — Steelmaking Subcategory

• § 420.40— Applicability; description of the steelmaking subcategory.
• § 420.41— Specialized definitions.
• § 420.42— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.43— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.44— New source performance standards (NSPS).
• § 420.45— Pretreatment standards for existing sources (PSES).
• § 420.46— Pretreatment standards for new sources (PSNS).
• § 420.47— Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
• § 420.48— Pretreatment standards compliance dates.

Subpart E — Vacuum Degassing Subcategory

• § 420.50— Applicability; description of the vacuum degassing subcategory.
• § 420.52— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.53— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.54— New source performance standards (NSPS).
• § 420.55— Pretreatment standards for existing sources (PSES).
• § 420.56— Pretreatment standards for new sources (PSNS).

Subpart F — Continuous Casting Subcategory

• § 420.60— Applicability; description of the continuous casting subcategory.
• § 420.62— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.63— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.64— New source performance standards (NSPS).
• § 420.65— Pretreatment standards for existing sources (PSES).
• § 420.66— Pretreatment standards for new sources (PSNS).

Subpart G — Hot Forming Subcategory

• § 420.70— Applicability; description of the hot forming subcategory.
• § 420.71— Specialized definitions.
• § 420.72— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.73— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.74— New source performance standards (NSPS).
• § 420.75— Pretreatment standards for existing sources (PSES).
• § 420.76— Pretreatment standards for new sources (PSNS).
• § 420.77— Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

Subpart H — Salt Bath Descaling Subcategory

• § 420.80— Applicability; description of the salt bath descaling subcategory.
• § 420.81— Specialized definitions.
• § 420.82— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.83— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.84— New source performance standards (NSPS).
• § 420.85— Pretreatment standards for existing sources (PSES).
• § 420.86— Pretreatment standards for new sources (PSNS).
• § 420.87— Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

Subpart I — Acid Pickling Subcategory

• § 420.90— Applicability; description of the acid pickling subcategory.
• § 420.91— Specialized definitions.
• § 420.92— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.93— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.94— New source performance standards (NSPS).
• § 420.95— Pretreatment standards for existing sources (PSES).
• § 420.96— Pretreatment standards for new sources (PSNS).
• § 420.97— Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

Subpart J — Cold Forming Subcategory

• § 420.100— Applicability; description of the cold forming subcategory.
• § 420.101— Specialized definitions.
• § 420.102— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.103— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.104— New source performance standards (NSPS).
• § 420.105— Pretreatment standards for existing sources (PSES).
• § 420.106— Pretreatment standards for new sources (PSNS).
• § 420.107— Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

Subpart K — Alkaline Cleaning Subcategory

• § 420.110— Applicability; description of the alkaline cleaning subcategory.
• § 420.111— Specialized definitions.
• § 420.112— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.113— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.114— New source performance standards (NSPS).
• § 420.115— Pretreatment standards for existing sources (PSES).
• § 420.116— Pretreatment standards for new sources (PSNS).
• § 420.117— Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

Subpart L — Hot Coating Subcategory

• § 420.120— Applicability; description of the hot coating subcategory.
• § 420.121— Specialized definitions.
• § 420.122— Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
• § 420.123— Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.124— New source performance standards (NSPS).
• § 420.125— Pretreatment standards for existing sources (PSES).
• § 420.126— Pretreatment standards for new sources (PSNS).
• § 420.127— Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

Subpart M — Other Operations Subcategory

• § 420.130— Applicability.
• § 420.131— Specialized definitions.
• § 420.132— Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).
• § 420.133— Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
• § 420.134— New source performance standards (NSPS).
• § 420.135— Pretreatment standards for existing sources (PSES).
• § 420.136— Pretreatment standards for new sources (PSNS).
• § 420.137— Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best control technology for conventional pollutants (BCT).