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Regulations last checked for updates: May 14, 2025
Title 40 - Protection of Environment last revised: Apr 14, 2028
All Titles
Title 40
Chapter I
Part 425 - PART 425—LEATHER TANNING AND FINISHING POINT SOURCE CATEGORY
GENERAL PROVISIONS
§ 425.01 - Applicability.
§ 425.02 - General definitions.
§ 425.03 - Sulfide analytical methods and applicability.
§ 425.04 - Applicability of sulfide pretreatment standards.
§ 425.05 - Compliance dates.
§ 425.06 - Monitoring requirements.
Subpart A [§ 425.10 - § 425.16] - Subpart A—Hair Pulp, Chrome Tan, Retan-Wet Finish Subcategory
Subpart B [§ 425.20 - § 425.26] - Subpart B—Hair Save, Chrome Tan, Retan-Wet Finish Subcategory
Subpart C [§ 425.30 - § 425.36] - Subpart C—Hair Save or Pulp, Non-Chrome Tan, Retan-Wet Finish Subcategory
Subpart D [§ 425.40 - § 425.46] - Subpart D—Retan-Wet Finish-Sides Subcategory
Subpart E [§ 425.50 - § 425.56] - Subpart E—No Beamhouse Subcategory
Subpart F [§ 425.60 - § 425.66] - Subpart F—Through-the-Blue Subcategory
Subpart G [§ 425.70 - § 425.76] - Subpart G—Shearling Subcategory
Subpart H [§ 425.80 - § 425.86] - Subpart H—Pigskin Subcategory
Subpart I [§ 425.90 - § 425.96] - Subpart I—Retan-Wet Finish-Splits Subcategory
authority:
33 U.S.C. 1311
,
1314
,
c
,
e
, 1316 (b) and
c
, 1317 (b) and
c
,
1318
source:
47 FR 52870, Nov. 23, 1982, unless otherwise noted.
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