1. Public Workshop August 29, 2013

2. Logistics Presentation available on-linePresentation available on-line www.arb.ca.gov/desig/2013statedesig.htmwww.arb.ca.gov/desig/2013statedesig.htmwww.arb.ca.gov/desig/2013statedesig.htm Go-to-Meeting WebinarGo-to-Meeting Webinar www1.gotomeeting.com/register/465403048www1.gotomeeting.com/register/465403048www1.gotomeeting.com/register/465403048 Webinar ID = 465-403-048Webinar ID = 465-403-048 Problems during presentationProblems during presentation email Jenette Kwong at jkwong@arb.ca.govemail Jenette Kwong at jkwong@arb.ca.gov August 29, 2013 2

3. Presentation Outline Designation Process & CriteriaDesignation Process & Criteria Proposed Designation ChangesProposed Designation Changes Next StepsNext Steps Comments and DiscussionComments and Discussion August 29, 2013 3

4. Designation Process ARB adopts State standards to protect public health and welfareARB adopts State standards to protect public health and welfare ARB adopts designation criteria and area designationsARB adopts designation criteria and area designations Designations indicate healthfulness of air qualityDesignations indicate healthfulness of air quality Designations reviewed annuallyDesignations reviewed annually 4 August 29, 2013

5. Data to Use “Data for Record”“Data for Record” Meet siting and QA procedures Collected by ARB, Districts, others Reflect expected highest concentrations Time PeriodTime Period Most recent 3 calendar years Current review: 2010-2012 5 August 29, 2013

6. Exceedance vs. Violation ExceedanceExceedance Concentration higher than standard Qualifying exceedances are excluded as Highly Irregular or Infrequent Events ViolationViolation Exceedance not excluded as Highly Irregular or Infrequent Event Not all exceedances are violationsNot all exceedances are violations 6 August 29, 2013

7. Designation Categories NonattainmentNonattainment 1 or more violations in last 3 years AttainmentAttainment No violations in last 3 years UnclassifiedUnclassified Insufficient data 7 August 29, 2013

8. Designation Categories Nonattainment-TransitionalNonattainment-Transitional Subcategory of Nonattainment OzoneOzone 3 or fewer exceedances in last year Designation by District Does not require ARB action Occurs by Operation of Law 8 August 29, 2013

9. Proposed 2013 State Area Designation Changes Lead, NO 2, Ozone, PM 2.5, and PM 10Lead, NO 2, Ozone, PM 2.5, and PM 10 One Ozone change by Operation of LawOne Ozone change by Operation of Law Remaining changes require EO ActionRemaining changes require EO Action 9 August 29, 2013

10. State Lead Standard One StandardOne Standard 30-Day Average = 1.5 µg/m 3 Not to be equaled or exceeded 10

11. Proposed Lead Change Los Angeles CountyLos Angeles County South Coast Air Basin Currently Nonattainment High site is Rehrig (Exide) Designation value = 0.6 µg/m 3 Propose Attainment for County 11 August 29, 2013

12. State NO 2 Standard Two StandardsTwo Standards 1-Hour Average = 0.18 ppm Annual Average = 0.030 ppm Both are not to be exceeded Areas must meet both standards for Attainment designationAreas must meet both standards for Attainment designation 12

13. Proposed NO 2 Change South Coast Air BasinSouth Coast Air Basin Currently Nonattainment 1-hour High shared by four sites 1-hour designation value = 0.09 ppm Annual High site is Pomona Annual designation value = 0.026 ppm Propose Attainment for Air Basin 13 August 29, 2013

14. Ozone Standard Two StandardsTwo Standards 1-hour = 0.09 ppm 8-hour = 0.070 ppm Both are not to be exceeded Areas must meet both standards for Attainment designationAreas must meet both standards for Attainment designation 14 August 29, 2013

15. Proposed Ozone Change Glenn CountyGlenn County Sacramento Valley Air Basin Currently Nonattainment-Transitional High site is Willows 8-hour designation value = 0.069 ppm No 8-hour exceedances in 2012 Propose Attainment for County 15 August 29, 2013

16. Proposed Ozone Change Colusa CountyColusa County Sacramento Valley Air Basin Currently Nonattainment-Transitional High site is Colusa 8-hour designation value = 0.067 ppm No 8-hour exceedances in 2012 Propose Attainment for County 16 August 29, 2013

17. Proposed Ozone Change Yolo and Solano CountiesYolo and Solano Counties Sacramento Valley Air Basin Currently Nonattainment-Transitional High site is Woodland 8-hour designation value = 0.080 ppm Nine 8-hour exceedances in 2012 Nonattainment by Operation of Law 17 August 29, 2013

18. PM 2.5 Standard One StandardOne Standard Annual Average = 12  g/m 3 Not to be exceeded 18 August 29, 2013

19. Proposed PM 2.5 Change Glenn CountyGlenn County Sacramento Valley Air Basin Currently Unclassified High site is Willows Annual designation value = 9  g/m 3 Propose Attainment for County 19 August 29, 2013

20. Proposed PM 2.5 Change Sacramento CountySacramento County Sacramento Valley Air Basin Currently Nonattainment High site is Sacramento-Del Paso Annual designation value = 12  g/m 3 Propose Attainment for County 20 August 29, 2013

21. Proposed PM 2.5 Change Salton Sea Air BasinSalton Sea Air Basin Imperial (partial) and Riverside (partial) Counties (Remainder of Air Basin outside of City of Calexico) Currently Unclassified High site is Indio Annual designation value = 8  g/m 3 Propose Attainment for most of Air Basin 21 August 29, 2013

22. PM 10 Standard Two StandardsTwo Standards 24-Hour = 50  g/m 3 Annual Average = 20  g/m 3 Both are not to be exceeded Areas must meet both standards for Attainment designationAreas must meet both standards for Attainment designation 22 August 29, 2013

23. Proposed PM 10 Change Del Norte and Trinity CountiesDel Norte and Trinity Counties North Coast Air Basin Currently Nonattainment Del Norte high site is Crescent City 24-hour designation value = 40  g/m 3 Annual designation value = 15  g/m 3 Trinity high site is Weaverville 24-hour designation value = 42  g/m 3 Annual designation value = 18  g/m 3 Propose Attainment for Counties 23 August 29, 2013

24. What’s Next? September 6September 6 Deadline to submit initial comments or provide additional informationDeadline to submit initial comments or provide additional information October 15October 15 Staff report released for public comment periodStaff report released for public comment period 24 August 29, 2013

25. Further Information Online informationOnline informationwww.arb.ca.gov/desig/desig.htm Sign up for designation listserve ContactsContacts Theresa Najita (General, PM) (916) 322-7297 (tnajita@arb.ca.gov) Jenette Kwong (Ozone, Lead, NO 2 ) (916) 324-9460 (jkwong@arb.ca.gov) 25 August 29, 2013

26. Comments … Questions … Discussion … 26 August 29, 2013