---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchN/part436"
level: "part"
label: "Part 436"
heading: "Mineral Mining and Processing Point Source Category"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchN-part436"
sections_count: 65
---

# Part 436 — Mineral Mining and Processing Point Source Category

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter N — Effluent Guidelines and Standards

## Contents

- [Subpart A — Dimension Stone Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartA.md)
- [Subpart B — Crushed Stone Subcategory](/cfr/40/chI-subchN-part436-subpartB.md)
- [Subpart C — Construction Sand and Gravel Subcategory](/cfr/40/chI-subchN-part436-subpartC.md)
- [Subpart D — Industrial Sand Subcategory](/cfr/40/chI-subchN-part436-subpartD.md)
- [Subpart E — Gypsum Subcategory](/cfr/40/chI-subchN-part436-subpartE.md)
- [Subpart F — Asphaltic Mineral Subcategory](/cfr/40/chI-subchN-part436-subpartF.md)
- [Subpart G — Asbestos and Wollastonite Subcategory](/cfr/40/chI-subchN-part436-subpartG.md)
- [Subpart H — Lightweight Aggregates Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartH.md)
- [Subpart I — Mica and Sericite Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartI.md)
- [Subpart J — Barite Subcategory](/cfr/40/chI-subchN-part436-subpartJ.md)
- [Subpart K — Fluorspar Subcategory](/cfr/40/chI-subchN-part436-subpartK.md)
- [Subpart L — Salines From Brine Lakes Subcategory](/cfr/40/chI-subchN-part436-subpartL.md)
- [Subpart M — Borax Subcategory](/cfr/40/chI-subchN-part436-subpartM.md)
- [Subpart N — Potash Subcategory](/cfr/40/chI-subchN-part436-subpartN.md)
- [Subpart O — Sodium Sulfate Subcategory](/cfr/40/chI-subchN-part436-subpartO.md)
- [Subpart P — Trona Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartP.md)
- [Subpart Q — Rock Salt Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartQ.md)
- [Subpart R — Phosphate Rock Subcategory](/cfr/40/chI-subchN-part436-subpartR.md)
- [Subpart S — Frasch Sulfur Subcategory](/cfr/40/chI-subchN-part436-subpartS.md)
- [Subpart T — Mineral Pigments Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartT.md)
- [Subpart U — Lithium Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartU.md)
- [Subpart V — Bentonite Subcategory](/cfr/40/chI-subchN-part436-subpartV.md)
- [Subpart W — Magnesite Subcategory](/cfr/40/chI-subchN-part436-subpartW.md)
- [Subpart X — Diatomite Subcategory](/cfr/40/chI-subchN-part436-subpartX.md)
- [Subpart Y — Jade Subcategory](/cfr/40/chI-subchN-part436-subpartY.md)
- [Subpart Z — Novaculite Subcategory](/cfr/40/chI-subchN-part436-subpartZ.md)
- [Subpart AA — Fire Clay Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAA.md)
- [Subpart AB — Attapulgite and Montmorillonite Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAB.md)
- [Subpart AC — Kyanite Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAC.md)
- [Subpart AD — Shale and Common Clay Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAD.md)
- [Subpart AE — Aplite Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAE.md)
- [Subpart AF — Tripoli Subcategory](/cfr/40/chI-subchN-part436-subpartAF.md)
- [Subpart AG — Kaolin Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAG.md)
- [Subpart AH — Ball Clay Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAH.md)
- [Subpart AI — Feldspar Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAI.md)
- [Subpart AJ — Talc, Steatite, Soapstone and Pyrophyllite Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAJ.md)
- [Subpart AK — Garnet Subcategory [Reserved]](/cfr/40/chI-subchN-part436-subpartAK.md)
- [Subpart AL — Graphite Subcategory](/cfr/40/chI-subchN-part436-subpartAL.md)