These standards govern the design and construction of encroachments which affect the flood control works and floodways and are used by the board for the regulation of encroachments. The standards apply to any work within the limits of, or which can affect, any authorized flood control project or any adopted plan of flood control. These standards also provide the public with information needed to prepare and submit encroachment applications to the board. Where any provision in this division requires the application of judgment, such as where “practical,” “feasible,” or “reasonable,” the burden of proof on such issues as impracticality, unfeasibility, or unreasonableness lies with the applicant or permittee.