Every farm operation in Pennsylvania that land applies manure or agricultural process wastewater (generated on the farm or received from an importer), regardless of size, is required by 25 Pa. Code Chapter 91, Section 91.36 to have and implement a written Manure Management Plan, unless your operation has already implemented an Act 38 Nutrient Management Plan. This includes hobby farms that only have 1 or 2 animals.  These plans do not need to be submitted for review and approval, but these plans must be maintained and available on site for when an agricultural inspection occurs.