Overview of Manure Digester Regulations in Wisconsin

1
Overview of Manure Digester Regulations in
Wisconsin

• Mark Cain
• Wastewater Engineer
• DNR- South Central Region

2
Regulations - Water

• Local Rules
• Manure Storage Ordinance
• Livestock Siting Law
• Stormwater - Construction Site gt 1 acre
• NR 151 Nonpoint Rules
• NR 243 Animal Feeding Operations
• NR 213/214 Industrial Wastewater

3
Large Farms - Cafo

• Farm gt 1,000 Animal Units
• Large Farms require a WPDES Permit
• NR 243 applies WPDES Permit must include a
  sample point for a digester
• Industrial Waste can be added if included in the
  permit and approved
• 180 day storage requirement

4
Animal Units and Worksheet Form
5
(No Transcript)
6
Smaller Farms - lt1,000 a.u.

• Manure only
• Manure storage ordinances apply
• Traditional farm regulations
• Manure and Industrial Waste or other additives
• gt 10 additives, WPDES Permit required

7
Digester Cooperatives

• Two or more CAFOs
• Each CAFO must apply for an individual WPDES
  Permit
• Combined entity may need a permit
• 3rd Party Manager
• Additives gt 10
• Operational issues

8
Digester Cooperatives

• CAFO(s) and smaller farms
• Each CAFO must apply for an individual WPDES
  Permit
• Combined entity may need a permit
• 3rd Party Manager
• Additives gt 10
• Operational issues

9
Digester Cooperatives

• Several smaller farms (each lt1000 animal units)
  which together are gt1,000 animal units.
• Combined entity may need a permit
• 3rd Party Manager
• Additives - gt 10
• Operational issues

10
Air Regulations - Overview

• NR 445
• Ammonia
• Hydrogen Sulfide
• VOCs
• Particulate Matter
• NR 429
• Odor Rule

11
Air Issues

• EPA CAFO Compliance Agreement Air Monitoring
  Study
• CIG Livestock Air Monitoring Study
• DATCP Livestock Siting Standards
• Environmental Assessments
• Greenhouse Gas and Carbon Credits

12
DNR Contacts

• Andy Stewart Section Chief Air Permits and
  Modeling (608) 266 - 6876
• John Melby Bureau Director Air Program
  (608) 264 8884
• Tom Bauman Ag Runoff Central Office (608)
  266 - 9993
• Mark Cain Ag Runoff South Central Region
  (608) 275 - 3252
• http//dnr.wi.gov/runoff/ag/agcontacts.htm