Subpart ZZ - Ceramics Manufacturing

This page provides resources for subpart ZZ reporters, including implementation information as well as supporting documents for relevant rulemakings.

Summary

This source category applies to any facility that uses nonmetallic, inorganic materials, many of which are clay-based, to produce ceramic products such as bricks and roof tiles, wall and floor tiles, table and ornamental ware (household ceramics), sanitary ware, refractory products, vitrified clay pipes, expanded clay products, inorganic bonded abrasives, and technical ceramics (e.g., aerospace, automotive, electronic, or biomedical applications).

The source category includes facilities that annually consume at least 2,000 tons of carbonates (CO₃^2-), – either as raw materials or as a constituent in clay, which is heated to a temperature sufficient to allow the calcination reaction to occur, – and operate a ceramics manufacturing process unit. A ceramics manufacturing process unit is a kiln, dryer, or oven used to calcine clay or other CO₃^2--based materials to produce a ceramics product .

Reporter Resources

• Subpart ZZ Information Sheet
• Subpart ZZ Monitoring Checklist

Subpart ZZ Regulatory History