# Technical Amendments to Performance Specification 18 and Procedure 6
> **Rule** · Partial withdrawal of direct final rule. · Published 2016-08-08 · Effective 2016-08-08 · 81 FR 52348
## Document
- **Document number:** 2016-18682
- **Category:** other
- **Federal Register citation:** 81 FR 52348
- **CFR reference:** 40 CFR 63
- **Publication date:** 2016-08-08
- **Effective date:** 2016-08-08
- **EPA docket:** EPA-HQ-OAR-2013-0696
## Abstract

Because the Environmental Protection Agency (EPA) received adverse comment, we are withdrawing a portion of the May 19, 2016, direct final rule that made several minor technical amendments to the performance specifications and test procedures for hydrogen chloride (HCl) continuous emission monitoring systems (CEMS). The adverse comments related to revisions to Procedure 6 and thus the EPA is withdrawing the portion of the direct final rule that revised Procedure 6.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/08/08/2016-18682/technical-amendments-to-performance-specification-18-and-procedure-6)
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