1. 1 Agricultural Programs for Controlling Particulate Matter Pollution Ira Domsky, Deputy Director Air Quality Division presented to Western State Air Resources Council September 26, 2006

2. 2 Overview PM monitoring in Maricopa County and the bad winter Where agriculture fits in the picture Arizona’s Agricultural Best Management Practices Program

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4. 4 24-hr Avg. Standard Annual Avg. Standard

5. 5 Monitors with PM 10 Exceedances Nov. ’05 thru Mar ’06 - 50 on 30 days 4 1 Durango – 20 Greenwood – 2 W. 43 rd – 21 W. Phoenix – 1 Bethune School – 1

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7. 7 December 12, 2005, 8:30am Visibility = 8 mi.

8. 8 Ag and PM 10 : Background Failure to address 24-hour average PM 10 violations in the 1994 Plan resulted in adverse Court of Appeals decision ADEQ developed “micro-scale” PM 10 plan in 1996 to address this issue Four sites with violating monitors evaluated Controls to remedy violations would apply throughout the nonattainment area

11. 11 Ag and PM 10 : Background Attainment could be demonstrated at all sites except West Chandler As a result, EPA disapproved the plan in part, and, in April 1998, proposed a Federal Plan that included an Ag BMP program Arizona countered with legislation requiring ADEQ to adopt Ag BMP rules August 1998 Final Federal Plan did not include Ag BMP program

12. 12 Ag and PM 10 : Background ADEQ, through the Ag BMPs Committee, developed current program Submitted to EPA in 2001, subsequently approved Approval upheld in 2004 Court decision

13. 13 Agricultural Best Management Practices Applicability Commercial farms ≥10 acres All lands involved in farming: Crop land (includes fallow fields) Non-crop land (roads, staging areas) Tilling and harvest

14. 14 Agricultural Best Management Practices Requirements Implement at least one BMP for each land type and activity Maintain a record of selected BMPs and make available upon request Noncompliance subjects farmer to acquiring an individual permit, which is enforceable under permitting statutes and rules

15. 15 Agricultural Best Management Practices Compliance and Technical Assistance Complaint based 1 FTE in ADEQ dedicated to complaint response and compliance assistance 1 FTE at Az Dept. of Ag provides training and technical assistance See www.azda.gov/ACT/AirQuality.htmwww.azda.gov/ACT/AirQuality.htm for more information

16. 16 Agricultural Best Management Practices Yuma County Nonattainment for PM 10, but has 3 years of clean data (now) Redesignation derailed by a natural event; NEAP prepared that included an Ag BMPs program (under a separate rule) Maintenance plan submitted and awaiting approval

17. 17 Agricultural Best Management Practices See www.azdeq.gov/environ/air/prevent/pcp.html#bmp for statutes and rules

18. 18 Other Dust Control Programs for Ag San Joaquin Valley AQMD Conservation Management Practices Very similar to Arizona program Farms ≥ 350 acres; also covers engines Requires submittal of reports to AQMD Other requirements for livestock operations and dairies www.valleyair.org/General_Info/AGLoader.htm Imperial County AQMD

19. 19 Questions?