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adequately compensates ail natural resource impacts associated with the Austin Road Landfill expansion project. The mitigation concepts outlined in this document have been discussed with representatives of the U. S. Army Corps of Engineers (Corps), U.S. Fish & Wildlife Service (USFWS), California Department of Fish and Game (DFG), California Department of Water Resources' Reclamation Board (DWRRB), U. S. Environmental Protection Agency (EPA), and San.Joaquin County Flood Control District (SJCFCD) and have been modified based on comments received from these agencies during previous meetings. In addition to planning the mitigation of proposed fill of jurisdictional waters of the United States, this document identifies performance standards and formulates monitoring requirements for realigning the creek and for planting vegetation to mitigate impacts. f : Site Description I The current landfill is located in a portion of the site north of Littlejohns Creek (Figure 1-2). � The vegetation on the landfill is ruderal with large areas of bare ground. Two borrow pits, with j ruderal and non-native annual grassland vegetation, are located on the western portion of the site. The F area between the borrow pits and the creek supports non-native annual grassland (Jones & Stokes Associates, Inc. 1995). i •. The area south of the creek is used as agricultural field and borrow it and cont €� p nuns ruderal 1 vegetation throughout. Several valley oak (Quercus lobasa) occur along the creek and adjacent to ditches along the edge of the site. Several walnut trees (Juglans hind cii) occur along the western edge of the site. The area north of the landfill gate, east of Littlejohns Creek and west of Austin Road, supports non-native annual grassland (Jones & Stokes Associates, Inc. 1995). Adjacent land use includes agriculture,rjuvenile an J J d women's detention facilities, and the Forward, Inc. Landfill. The Stockton Metropolitan Airport is within 10,000 feet of the Austin Road F, Landfill (Environmental Science Associates 1993). I Existing Facilities Ej The existing permitted acreage at the Austin Road Landfill is 184 acres pernvtted to a height r of 90 feet mean sea level (msi). Of the 184 acres, 123.3 acres are for solid-waste landfilling, 1.5 acres F! are for the Newcastle Road right-of-way, 16.5 acres are for flood-control easement for the north i branch of the south fork of Littlejohns Creek, and 42.6 acres are used as a borrow area (Figure 1-2). Wetland Mitigation and Monitoring Plat jar the Chapter 1. Introduction Fi Austin Road landfill EXpansion, U.S.Army Corps of Engineers File 199400974 CirY of Stockton 1-2 April 5. 1996 ,