MI HB5790

Adds digestate from registered anaerobic digesters to the definition of solid waste exclusions, allowing it to be applied to farmland without solid waste classification.

Expands anaerobic digester feedstock options to include 23 approved materials ranging from livestock manure to food waste, beverages, and crop residuals, with digestate land application required to comply with GAAMPS.

Requires anaerobic digesters managing more than 20% off-site feedstock to register with the department within 90 days, submit a $750 fee, and provide a contingency plan addressing biological failures, restart procedures, emergency contacts, and digestate disposal.

Exempts certain small anaerobic digesters from registration if they receive manure only from non-permitted farms, accept less than 20% off-site feedstock, and manage digestate through land application or approved disposal facilities.

Modifies reporting requirements for materials utilization facilities, extending deadlines from fiscal year to calendar year (by January 31) and requiring records retention for 5 years after reporting.