It is the intent of the Legislature that local coastal programs certified by the commission should be sufficiently specific to meet the requirements of Section 30108.5, but not so detailed as to require amendment and commission review for minor changes, or to discourage the assumption by local governments of postcertification authority which ensures and implements effective protection of coastal resources. The Legislature also recognizes that the applicable policies and the level of specificity required to ensure coastal resource protection may differ between areas on or near the shoreline and inland areas.