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

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

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

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

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, ,000 – < 100, ,4206 ≥ 100,000500,0003 Note: 2007 Survey – 13 facilities and 708,328 tons/yr throughput

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

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

Key Input Received Compliance costs & CEQA Harmony with Rule (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

Concepts Under Consideration Amending Rule – 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

Staff Contacts Jong Hoon Lee, Ph.D. – Rule Development Lead – Phone: (909) – Tracy Goss, P.E. – Program Supervisor – Phone: (909) – Jill Whynot – Director, Strategic Initiatives – Phone: (909) –