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ORDINANCE Page 11 of 19 <br />6F. Monitoring the required mitigation area impact and taking remedial action when <br />necessary. <br />“Monitoring” means the collection and analysis of data by various methods for the purposes of <br />understanding and documenting changes in natural systems and features, and including <br />gathering baseline data, evaluating the impacts of development proposals on the biological, <br />hydrologic and geologic elements of such systems, and assessing the performance of required <br />mitigation measures. <br />“Native vegetation” means vegetation on a site or plant species which are indigenous to the <br />area in question; or if the site has been cleared, species of a size and type that were on the site <br />on the effective date of this title or reasonably could have been expected to have been found on <br />the site at the time it was cleared. <br />“Non-federally regulated wetland” means a wetland that is not jurisdictional under the federal <br />Clean Water Act. Sometimes referred to as “isolated wetlands,” these wetlands remain <br />regulated under state and local laws and rules, whether or not they are protected by federal <br />law. <br />“Normal rainfall” means that rainfall that is at or above the mean of the accumulated rainfall <br />record, based upon the water year, for the city as recorded at the Seattle Tacoma International <br />Airport, or other local rainfall recording station recognized by the city. <br />“Open water component” means water in dispersed patches covering forty to sixty percent of <br />the wetland which have not less than six inches and not more than six feet of standing water for <br />at least ten months of the year. <br />“Ordinary high water mark” means the mark that will be found by examining the channel bed <br />and banks of a stream, lake or pond and ascertaining where the presence and action of waters <br />are so common and usual, and so long maintained in all years of normal rainfall, as to mark upon <br />the soil a character distinct from that of the abutting upland in respect to vegetation. In any area <br />where the ordinary high water mark cannot be found, the line of mean high water shall <br />substitute the ordinary high water mark adjoining salt water shall be the line of mean higher <br />high tide and the ordinary high water mark adjoining fresh water shall be the line of mean high <br />water. In braided channels and alluvial fans, the ordinary high water mark or substitute shall be <br />measured so as to include the entire stream feature. <br />“Plant associations of infrequent occurrence” means one or more plant species on a landform <br />type which, because of the rarity of the habitat or the species involved or both, or for other <br />botanical or environmental reasons, do not occur frequently in Everett or Snohomish County. <br />“Pond” means an area permanently inundated by water in excess of six feet deep and less than <br />twenty acres and larger than two thousand five hundred square feet in area as measured at the <br />ordinary high water mark. <br />“Preservation” means the removal of a threat to, or preventing the decline of, wetland <br />conditions by an action in or near a wetland. This term includes activities commonly associated <br />with the protection and maintenance of wetlands through the implementation of appropriate <br />legal and physical mechanisms (such as recording conservation easements and providing