EPA Air · stack tests by state, industry and year

Mining and quarrying (NAICS 2123): stack tests in Washington, 2023

• 35Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2023 at a Washington source whose primary industry code is NAICS 2123. A facility filing more than one industry code is counted under the first one on its record.

Mining and quarrying (NAICS 2123) in Washington, other years

• 2025 33
• 2024 40
• 2022 5
• 2021 5
• 2019 5
• 2018 4
• 2017 14

Other industries in Washington, 2023

• Paper manufacturing (NAICS 3221) 84
• Petroleum and coal products manufacturing (NAICS 3241) 25
• Pipeline transportation (NAICS 4862) 19
• Chemical manufacturing (NAICS 3251) 15
• Utilities (NAICS 2211) 12
• Wood product manufacturing (NAICS 3211) 9
• Chemical manufacturing (NAICS 3253) 8
• Nonmetallic mineral product manufacturing (NAICS 3272) 7
• Merchant wholesalers, nondurable goods (NAICS 4247) 7
• Food manufacturing (NAICS 3119) 6
• Paper manufacturing (NAICS 3222) 6
• Transportation equipment manufacturing (NAICS 3364) 6
• Utilities (NAICS 2213) 6
• Primary metal manufacturing (NAICS 3311) 5
• Primary metal manufacturing (NAICS 3312) 4
• Food manufacturing (NAICS 3118) 4
• NAICS 9999 4
• Support activities for transportation (NAICS 4883) 3
• Waste management and remediation (NAICS 5622) 3
• Primary metal manufacturing (NAICS 3313) 3

Air-emissions stack tests recorded in Washington, 2023

Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.