... defendablejurisdictional delineations. Typically, the science of identifying and delineating wet-lands is a two-tiered process. An initial office-based off-site assessment is conductedfor identification ... similar areas” (33 CFR 328 .3).In identifying and delineating federal jurisdiction wetlands, three essential tech-nical criteria or factors are applied: the presence of wetlands hydrology throughsurficial ... Edition and Provi-sional Edition (7.5 minute or 15 minute quadrangles, scales 1 :24 ,000 or 1 :25 ,000,continental United States, 1 :20 ,000 Puerto Rico, 1:63,360 Alaska), U.S. Depart-ment of the Interior...