The compost rule project
1 / 17

The Compost Rule Project - PowerPoint PPT Presentation

  • Uploaded on
  • Presentation posted in: General

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

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

The Compost Rule Project

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

The Compost Rule Project

November 19, 2010


  • Logistics

  • Webcast Information

    • Emails during live webcast must be sent to

  • Compost Rule Team

The Compost Rule Process

  • Why the rule revision?

  • What happens next?

The Framework Concept: Minn. R. 7035.2836 Compost Facilities


  • 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)


  • 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


  • 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

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?

Subp. X. Location Standards

  • Not on Karst

  • 5’ separation to water table

  • Flood plain? 7035.2555? Same as with composting.

  • No Buffer

Subp. 8. Design Requirements

  • Size

    • ______Large (more requirements)

    • ______Small (less requirements)

  • Type

    • Windrows (aearated)

    • Static Piles (non-aerated)

Subp. 8. Design Requirements

  • Pad

    • Impermeable pad required only under certain circumstances

    • All weather work surface required (accessible for all seasons for turning)

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)

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

Subp. 9. Operation Requirements

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

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)

Subp. 11. Compost distribution & end use

  • Stay with plan language since most will produce a Class 1 compost

  • Login