, 2013, through February 28, 2014) is $1.35 per animal unit month (AUM).Surcharge for Authorized GrazingIn accordance with 43 CFR 4130.8-1(f), the BLM adds a surcharge to the grazing fee bill for authorized grazing of livestock owned by persons other than the permittee or lessee, except as provided by 43 CFR 4130.7(f).