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The Compost Rule Project

The Compost Rule Project. November 19, 2010. Introduction. Logistics Webcast Information Emails during live webcast must be sent to yolanda.letnes@state.mn.us Compost Rule Team. The Compost Rule Process. Why the rule revision? What happens next?.

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The Compost Rule Project

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  1. The Compost Rule Project November 19, 2010

  2. Introduction • Logistics • Webcast Information • Emails during live webcast must be sent to yolanda.letnes@state.mn.us • Compost Rule Team

  3. The Compost Rule Process • Why the rule revision? • What happens next?

  4. The Framework Concept: Minn. R. 7035.2836 Compost Facilities

  5. Ideas • Source Separated Organic Material (SSOM) must be source separated at the generator, not pulled from Mixed Municipal Solid Waste (MMSW) at a transfer station • Goal is not to develop overly prescriptive standards, but outcome based ones where possible • Portions of Demonstration Agreement (Buburl is most current version) will be used for rule • Guidance documents on some of the details (technical standards)

  6. Ideas • Stringency of requirements might need to reflect how broadly the materials are that a facility can accept: • If take everything in statute, need to be more protective • If just yard waste and food waste, then can be less protective • Stormwater management requirements are carried forward from existing rules • Industrial Stormwater permit required only if a discharge occurs, not if manage on site • If purchasing feedstock materials, will trigger permitting requirement

  7. Ideas • Currently, there is no standard requirement for Financial Assurance (FA), MPCA wants to reserve right to require FA based on site circumstances • Will continue with 503 standards • Not intended that animal manure will be part of feedstock • College backyard compost sites (Program Management Decision) • Have been taking animal waste

  8. Subp. 1. Scope • Modify scope to indicate owner or operator of a facility used to compost SSOM( ________________) must comply with the new rule track. • Feedstocks • Untreated woods can be used as a carbon source • No demolition debris (sheet rock, insulation, etc.) • What about manufactured wood?

  9. Subp. X. Location Standards • Not on Karst • 5’ separation to water table • Flood plain? 7035.2555? Same as with composting. • No Buffer

  10. Subp. 8. Design Requirements • Size • ______Large (more requirements) • ______Small (less requirements) • Type • Windrows (aearated) • Static Piles (non-aerated)

  11. Subp. 8. Design Requirements • Pad • Impermeable pad required only under certain circumstances • All weather work surface required (accessible for all seasons for turning)

  12. Subp. 8. Design Requirements • Pad • Soil infiltration necessary and verified every 5?-10? years with soil boring • Curing pad (may not)/(will not) need impermeable surface (in reference to using soil as a form of leachate management)

  13. Subp. 9. Operation Requirements • Immediate mixing of food waste with bulking agent by the end of the day • If not immediate, then place a biofilter on it • Odor Management Plan required • Sampling and Analysis plan

  14. Subp. 9. Operation Requirements

  15. Subp. 9. Operation Requirements • Training with ceu’s required over a certain size • Need training only if over a certain size • Add as a permit requirement? • Rule language or Guidance? • Page 4, item l – Use as needed Odor Management Plan item • Page 5, item r – Nitrogen to Carbon Ratios

  16. Subp. 10. Compost Classification • Readily available testing (bucket method & log of testing) • Acceptable testing methods for finished product • Maturity testing – Solvita • STA requirements – set methods? • page 4,item g test methods okay (Demonstration Agreement)

  17. Subp. 11. Compost distribution & end use • Stay with plan language since most will produce a Class 1 compost

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