Advisory

Air Quality Advisory

Smoke from the Little Fire is expected to impact air quality in the East Bay on Tuesday. Residents in affected areas should stay alert to news coverage and health warnings related to smoke. Check air quality at fire.airnow.gov and take steps to protect your health from smoke. Learn how at www.baaqmd.gov/wildfiresafety. Pollution levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

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197 results for 'r 20'

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05/20/2026 Letter to EPA

05/20/2026 Letter to EPA
May 21, 2026 ... May 20, 2026 Mr. Gerardo Rios Permits Office Chief United States Environmental Protection Agency Region 9 Air-3-1 75 Hawthorne Street San Francisco, CA 94105 Dear Mr. Rios: This is to advise you ...
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(389 Kb PDF, 1 pg)

May 21, 2026 ... May 20, 2026 Mr. Gerardo Rios Permits Office Chief United States Environmental Protection Agency Region 9 Air-3-1 75 Hawthorne Street San Francisco, CA 94105 Dear Mr. Rios: This is to advise you ...
04/09/20 Letter to EPA

04/09/20 Letter to EPA
Apr 9, 2020 ... April 9, 2020 Ms. Elizabeth Adams Director, Air Division United States Environmental Protection Agency Region 9 75 Hawthorne Street San Francisco, CA 94105 ALAMEDA COUNTY ...
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(186 Kb PDF, 1 pg)

Apr 9, 2020 ... April 9, 2020 Ms. Elizabeth Adams Director, Air Division United States Environmental Protection Agency Region 9 75 Hawthorne Street San Francisco, CA 94105 ALAMEDA COUNTY ...
08/31/20 Comments and Responses

08/31/20 Comments and Responses
Aug 27, 2020 ... Attachment A Comments from UC Berkeley and Responses to Comments The sources in Facility A0059, UC Berkeley, and B1326, PE Berkeley, were merged in 2017, so a few of the references must be ...
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(111 Kb PDF, 2 pgs)

Aug 27, 2020 ... Attachment A Comments from UC Berkeley and Responses to Comments The sources in Facility A0059, UC Berkeley, and B1326, PE Berkeley, were merged in 2017, so a few of the references must be ...
7/20/2023 Statement of Basis

7/20/2023 Statement of Basis
Jul 20, 2023 ... Bay Area Air Quality Management District 375 Beale Street San Francisco, CA 94105 (415) 749-5000 Proposed Permit Evaluation and Statement of Basis for RENEWAL of MAJOR FACILITY ...
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(1 Mb PDF, 116 pgs)

Jul 20, 2023 ... Bay Area Air Quality Management District 375 Beale Street San Francisco, CA 94105 (415) 749-5000 Proposed Permit Evaluation and Statement of Basis for RENEWAL of MAJOR FACILITY ...
Letter to EPA 8/20/2025

Letter to EPA 8/20/2025
Aug 21, 2025 ... August 20, 2025 Mr. Gerardo Rios Permits Office Chief United States Environmental Protection Agency Region 9 Air-3-1 75 Hawthorne Street San Francisco, CA 94105 Dear Mr. Rios: This ...
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(169 Kb PDF, 1 pg)

Aug 21, 2025 ... August 20, 2025 Mr. Gerardo Rios Permits Office Chief United States Environmental Protection Agency Region 9 Air-3-1 75 Hawthorne Street San Francisco, CA 94105 Dear Mr. Rios: This ...
Spare the Air Tomorrow Thursday, July 20

Spare the Air Tomorrow Thursday, July 20
Spare the Air Tomorrow Thursday, July 20
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(30 Kb PDF, 1 pg)

Spare the Air Tomorrow Thursday, July 20
Notice of Hearing, filed 5/20/25

Notice of Hearing, filed 5/20/25
May 20, 2025 ... ...
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(175 Kb PDF, 3 pgs)

May 20, 2025 ... ...
05/05/20 Lehigh Fugitive Dust Plan

05/05/20 Lehigh Fugitive Dust Plan
Sep 5, 2018 ... Lehigh Southwest Cement Company Permanente Cement Plant Fugitive Dust Control Plan Prepared: September 10, 2010 Revised: June 4, 2018 ...
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(404 Kb PDF, 31 pgs)

Sep 5, 2018 ... Lehigh Southwest Cement Company Permanente Cement Plant Fugitive Dust Control Plan Prepared: September 10, 2010 Revised: June 4, 2018 ...
08/31/20 Final Permit Cover-Signed

08/31/20 Final Permit Cover-Signed
Sep 1, 2020 ... ...
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(239 Kb PDF, 1 pg)

Sep 1, 2020 ... ...
7/20/2023 Proposed Title V Permit

7/20/2023 Proposed Title V Permit
Jul 20, 2023 ... Bay Area Air Quality Management District 939 Ellis Street375 Beale Street San Francisco, CA 9410994105 (415) 771-6000749-5000 Final Proposed Renewal “Revision 65” Minor Revision MAJOR ...
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(18 Mb PDF, 1664 pgs)

Jul 20, 2023 ... Bay Area Air Quality Management District 939 Ellis Street375 Beale Street San Francisco, CA 9410994105 (415) 771-6000749-5000 Final Proposed Renewal “Revision 65” Minor Revision MAJOR ...
2/20/2009 - Hayward Chamber of Commerce

2/20/2009 - Hayward Chamber of Commerce
Feb 24, 2009 ... ...
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(50 Kb PDF, 1 pg)

Feb 24, 2009 ... ...
Current Title V Permit 8/20/2025

Current Title V Permit 8/20/2025
Aug 21, 2025 ... Bay Area Air Quality Management District 375 Beale Street, Suite 600 San Francisco, CA 94105 (415) 771-6000 Final MAJOR FACILITY REVIEW PERMIT Issued To: San Jose/Santa Clara Water Pollution ...
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(1 Mb PDF, 93 pgs)

Aug 21, 2025 ... Bay Area Air Quality Management District 375 Beale Street, Suite 600 San Francisco, CA 94105 (415) 771-6000 Final MAJOR FACILITY REVIEW PERMIT Issued To: San Jose/Santa Clara Water Pollution ...
REVISED 4/15/20 Draft Legislative Committee Minutes

REVISED 4/15/20 Draft Legislative Committee Minutes
Apr 20, 2020 ... AGENDA 4A – ATTACHMENT REVISED Draft Minutes – Legislative Committee Meeting of April 15, 2020 Bay Area Air Quality Management District 375 Beale Street, Suite 600 San Francisco, ...
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(189 Kb PDF, 7 pgs)

Apr 20, 2020 ... AGENDA 4A – ATTACHMENT REVISED Draft Minutes – Legislative Committee Meeting of April 15, 2020 Bay Area Air Quality Management District 375 Beale Street, Suite 600 San Francisco, ...
7/20/2023 Statement Basis Appendix D Engineering Evaluations

7/20/2023 Statement Basis Appendix D Engineering Evaluations
Jun 15, 2023 ... Application 23138, Change in S-1005 Hydrogen Plant Source Test Frequency EVALUATION REPORT TESORO - GOLDEN EAGLE REFINRY Application #23138 - Plant #14628 150 Solano Way Martinez, CA 94553 ...
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(64 Mb PDF, 2386 pgs)

Jun 15, 2023 ... Application 23138, Change in S-1005 Hydrogen Plant Source Test Frequency EVALUATION REPORT TESORO - GOLDEN EAGLE REFINRY Application #23138 - Plant #14628 150 Solano Way Martinez, CA 94553 ...
Air District awards $20 million for Caltrain electrification project

Air District awards $20 million for Caltrain electrification project
Jul 29, 2015 ... NEWS FOR IMMEDIATE RELEASE CONTACT: Ralph Borrmann July 29, 2015 415.749.4900 Air District awards $20 million for Caltrain ...
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(207 Kb PDF, 1 pg)

Jul 29, 2015 ... NEWS FOR IMMEDIATE RELEASE CONTACT: Ralph Borrmann July 29, 2015 415.749.4900 Air District awards $20 million for Caltrain ...
Stationary Source Request Form v. 4/6/20 tests test

Stationary Source Request Form v. 4/6/20 tests test
Apr 6, 2020 ... Stationary Source Data Request Instructions Complete all contact and project information below. Submit this form along with a printout of the Stationary Source Risk and Hazards Screening ...
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(165 Kb PDF, 1 pg)

Apr 6, 2020 ... Stationary Source Data Request Instructions Complete all contact and project information below. Submit this form along with a printout of the Stationary Source Risk and Hazards Screening ...
San Francisco AB 617 Overview and Update Presentation 6/20/2018

San Francisco AB 617 Overview and Update Presentation 6/20/2018
Jun 21, 2018 ... Improving Neighborhood Air Quality Elizabeth Yura AB 617: Community Health Protection Program June 20, ...
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(4 Mb PDF, 27 pgs)

Jun 21, 2018 ... Improving Neighborhood Air Quality Elizabeth Yura AB 617: Community Health Protection Program June 20, ...
Air District issues Spare the Air Alert for Sunday, September 20

Air District issues Spare the Air Alert for Sunday, September 20
Sep 21, 2009 ... Spare the Air Alert FOR IMMEDIATE RELEASE CONTACT: Ralph Borrmann September 19, 2009 415.760.0285 Air District issues Spare the Air Alert for Sunday, September 20 ...
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(26 Kb PDF, 2 pgs)

Sep 21, 2009 ... Spare the Air Alert FOR IMMEDIATE RELEASE CONTACT: Ralph Borrmann September 19, 2009 415.760.0285 Air District issues Spare the Air Alert for Sunday, September 20 ...
Two-day Winter Spare the Air Alert called for December 20 and 21

Two-day Winter Spare the Air Alert called for December 20 and 21
Dec 19, 2016 ... NEWS FOR IMMEDIATE RELEASE CONTACT: Tom Flannigan December 19, 2016 415.749.4900 Two-day Winter Spare the Air Alert called for December ...
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(112 Kb PDF, 1 pg)

Dec 19, 2016 ... NEWS FOR IMMEDIATE RELEASE CONTACT: Tom Flannigan December 19, 2016 415.749.4900 Two-day Winter Spare the Air Alert called for December ...
ST-20 Sulfur Dioxide, Sulfur Trioxide and Sulfuric Acid Mist (Regs. 6, 9, 10 & 12)

ST-20 Sulfur Dioxide, Sulfur Trioxide and Sulfuric Acid Mist (Regs. 6, 9, 10 & 12)
Sep 27, 1996 ... Source Test Method ST-20 SULFUR DIOXIDE, SULFUR TRIOXIDE, SULFURIC ACID MIST (Adopted January 20, 1982) REF: Regulations 6-320, 6-330, 9-1-302, 9-1-304 thru 310, 10-1-301, 12-6-301 1.
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(125 Kb PDF, 10 pgs)

Sep 27, 1996 ... Source Test Method ST-20 SULFUR DIOXIDE, SULFUR TRIOXIDE, SULFURIC ACID MIST (Adopted January 20, 1982) REF: Regulations 6-320, 6-330, 9-1-302, 9-1-304 thru 310, 10-1-301, 12-6-301 1.

Spare the Air Status

- Tuesday
  7 / 21
  No Alert
  
  Learn more...
- Wednesday
  7 / 22
  No Alert
  
  Learn more...
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Huling Isinapanahon: 11/8/2016

Air Quality Advisory

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Tuesday

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