1. Proposed Rule 1133.3 – Emission Reductions from Greenwaste Composting Operations December 2, 2010 UPDATE

2. Existing Air Quality South Coast Air Basin – Non-attainment for PM2.5 (NH3 precursor) – Extreme non-attainment for Ozone (VOC precursor) Contaminants contribute to significant adverse health effects

4. Purpose Control Measure of the 2007 AQMP Element to meet the federal PM2.5 (2015) and Ozone (2024) standards Focus to reduce air emissions while being sensitive to costs Want to continue the practice of composting Welcome input

5. Schedule and Process Two working group meetings to date Site visits Public workshop to be held Additional working group meetings - TBD Rule consideration – March 2011

6. Universe of Sources Number of facilities = 16 (as of 2009) Total throughput ≈ 692,000 tons/yr Throughput Range (tons/yr) Sub-total Throughput (tons/yr) Facilities (#) < 10,00033,5907 10,000 – < 100,000 158,4206 ≥ 100,000500,0003 Note: 2007 Survey – 13 facilities and 708,328 tons/yr throughput

7. Emissions VOCs: – 1,330 tons/year (3.6 tons/day) NH3: – 300 tons/year (0.8 tons/day)

8. Basic Concepts Stockpile management to prevent inadvertent decomposition Conduct green waste composting in turned windrows – Cover during active phase with finished material Air pollution controls required for composting using increased amounts of food waste

9. Key Input Received Compliance costs & CEQA Harmony with Rule 1133.1 (incl. exemptions) Don’t disadvantage composting vs. other alternatives (e.g., landfills) Effectiveness of controls & emission factors Practicality of monitoring parameters Consideration of static piles Food waste volume vs. weight percent

10. Concepts Under Consideration Amending Rule 1133.1 – Chipping and Grinding for stockpile management Do we need to monitor T, MC, O2, & C:N Ratio? Provisions for static piles SJV proposed rule concepts

11. Staff Contacts Jong Hoon Lee, Ph.D. – Rule Development Lead – Phone: (909) 396-3903 – Email: jhlee@aqmd.gov Tracy Goss, P.E. – Program Supervisor – Phone: (909) 396-3106 – Email: tgoss@aqmd.gov Jill Whynot – Director, Strategic Initiatives – Phone: (909) 396-3104 – Email: jwhynot@aqmd.gov