This regulation is to be applied to all livestock production units and give norms that have to be respected for activities around the production and the handling of manure. The manure, waste and compost have to be stored and disposed properly. Limitations for manure, compost or commercial fertilizers application are presented in order to protect the environment (distances from water sources, stream, ditches, rivers, lakes, etc.). The provisions for the mandatory nutrient management plan are also given with a progressive obligation for all farms to have such plan on October 1st, 2000 (except for manure application of farms of less than 40 animal units that meet certain requirements and for mineral fertilization for small farms that meet also certain requirements). That plan has to be prepared by and signed by a registered agronomist or by the owner of the farm that has received certified formation. Bookkeeping of the manure application has to be kept for 2 years specifying the field, application rate and date of application. For farms that produce manure in excess considering their land base, contracts have to be signed for at least 2 years with other farms that with the application of this manure will not be in nutrients excess. Specific provisions are presented for buildings and manure storage facilities with separation distances from water source, streams, ditches, rivers and lakes. The elements that rule the mandatory authorization certificate for new projects of livestock production units, expansion of building or increase in animal units, changes of animal species and changes or relocalization of manure storage facilities are given.