Iowa Admin. Code r. 27-12.83
Soil and water conservation practices shall meet Natural Resources Conservation Service conservation standards and specifications where applicable. These standards may be accessed through the electronic field office technical guide atefotg.sc.egov.usda.gov/efotglocator.aspx.
Tree planting, forest stand improvement, site preparation for natural regeneration and rescue treatment standards may be accessed through the department of natural resources' forestry technical guide found at www.iowadnr.gov/Portals/idnr/uploads/forestry/ForestryTechguide.pdf.
Standards and specifications are also available in hard copy in the district office where the practice will be implemented. These specifications and the general conditions, rule 27-10.81 (161A), shall be met in all cases. To the extent of any inconsistency between the general conditions and the specifications, the general conditions shall control.
Iowa Admin. Code r. 27-12.83