# WAC 296-840-100: WAC 296-840-100. Scope and application

> Washington · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_100

## Section

- **Citation:** WAC 296-840-100
- **Heading:** WAC 296-840-100. Scope and application
- **Jurisdiction:** Washington
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Washington Administrative Code / Title 296 / Chapter 296-840 / Section 296-840-100

## Text

This chapter applies to all occupational exposures to respirable crystalline silica, except for the following:
(1) Where employee exposure results from the processing of sorptive clays.
(2) Where documented objective data demonstrates that employee exposures to respirable crystalline silica will remain below 25 micrograms per cubic meter of air (25 μg/m3) as an 8-hour TWA under any foreseeable conditions.

## Nearby sections

- [WAC 296-840-095 WAC 296-840-095. Definitions](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_095.md)
- [WAC 296-840-100 WAC 296-840-100. Scope and application](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_100.md)
- [WAC 296-840-105 WAC 296-840-105. Exposure assessment](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_105.md)
- [WAC 296-840-110 WAC 296-840-110. Specified exposure control methods](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_110.md)
- [WAC 296-840-115 WAC 296-840-115. Regulated areas](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_115.md)
- [WAC 296-840-120 WAC 296-840-120. Methods of compliance](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_120.md)
- [WAC 296-840-125 WAC 296-840-125. Respiratory protection](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_125.md)
- [WAC 296-840-130 WAC 296-840-130. Respiratory protection program](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_130.md)
- [WAC 296-840-135 WAC 296-840-135. Housekeeping](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_135.md)
- [WAC 296-840-140 WAC 296-840-140. Written exposure control plan](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_140.md)
- [WAC 296-840-145 WAC 296-840-145. Medical surveillance](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_145.md)
- [WAC 296-840-150 WAC 296-840-150. Communication of respirable crystalline silica hazards to employees](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_150.md)
- [WAC 296-840-155 WAC 296-840-155. Recordkeeping](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_155.md)
- [WAC 296-840-160 WAC 296-840-160. Effective dates](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_160.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_296_840_100. Check the current official text before relying on it. Not legal advice.