The Operator proposes to alter the streambed to adopt an Invasive Exotic Weed Eradication and Revegetation Masterplan for the portions of the San Diego River currently within the San Diego City Limits excluding those portions within Mission Trails Regional Park. This agreement will authorize revegetation work described in the Masterplan (Buckhart Environmental 2002) for those portions of the San Diego River that contain the following invasive exotic species: pampas grass, giant cane, Mexican fan palm, Canary Island date palm, castor bean, tamarisk, ludwigia, evergreen ash, Brazilian pepper, eucalyptus, bottlebrush, California pepper, carrotwood, Chinese elm, edible fig, myoporum, and oleander. Under the auspices of the Masterplan a 3-4 acre pilot project will be implemented. The 3-4 acre pilot project is located adjacent to the Carlton Oaks Golf Course. Of the 3-4 acres, 1-2 acres will be cleared of all exotic species but will not be revegetated with native riparian species; the site is expected to revegetate through natural recruitment. The remaining 2 acres will also be cleared of all exotic species but will be replanted with native riparian species. Native riparina habitats found along the San Diego River include: freshwater marsh, southern willow scrub, willow riparina woodland, cottonwood-willow woodland, sycamore woodland, and open water.