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Wetlands and Waters A total of nine drainages flow from south to north across the project site with varying degrees of branching. The majority of the drainages within the project site are ephem- eral. Portions of some drainages are intermittent in nature. Ephemeral drainages do not show evidence of carrying water for more than a few days following rain. Intermittent drainages show evidence of carrying water for a week or more following rain. The two stock ponds on the site are constructed features in the paths of drainages to provide water for livestock. Two wetland plant communities -freshwater seep and seasonal wetland area -are also found in small portions of the project site. Six seasonal freshwater seeps are located along the northern slopes of the site's hillsides. The seasonal wetlands tend to occur in depressions that are inundated during the rainy season for a long enough period of time to support vegetation adapted to wetland conditions. These areas are shown on the biological maps in the DEIR. As identified in the EIR, the proposed development could significantly impact the site's wetland areas unless mitigation measures are implemented. Development including fill will impact a total of 145 linear feet of ephemeral streams. In addition, 0.046 acre of seasonal wetlands and freshwater swales would be affected, including 0.033 acre of isolated wetlands. The majority of these areas are located in the portion of the project farthest to the south and southwest along the most southerly section of Street "A" and along the extension of Court 5 toward the west. The areas are subject to Army Corps review with its Section 404 permit. As conditioned, the Corps shall be consulted by the applicant and/or the City before the approval of the first final subdivision map or before issuance of a grading permit. Once the Corps has completed its review, additional mitigation may be required beyond any City-imposed measures. Impacts on waters of the U.S. and isolated wetlands also must be approved by the Regional Water Quality Control Board through its Section 401 water quality permit. In addition, any impacts on waters on the site will require a Section 1602 Streambed Alteration permit from California Department of Fish and Game. Neither of the two stock ponds contains aquatic vegetation and neither one is considered jurisdictional waters. Blue Oak Woodland and Heritage Trees: To mitigate the loss of blue oak woodland trees and heritage trees from site preparation and development, the applicant is required to plant 400 trees in the open space areas of the project. This number was based on the 98-unit development plan and has been carried over to the 51-unit development plan now proposed. The 400 trees to be planted by the applicant would be augmented by the trees that will be planted with the individual lot developments, estimated at approximately 600 additional trees. Of the 400 trees proposed to be planted in the open space areas, 220 trees would be replacement trees for the blue oak woodland trees and 180 trees would be replacement trees for other species. The replacement trees would be required to be planted in the development's open space areas with the first phase of subdivision construction, and PUD-33 Page 33 of 59 June 13, 2007