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isolated wetlands that are not subject to Section 404 permitting, or in some cases granting a waiver. Bieghle Drain, along the northern boundary of the 2706 Pock Lane site, is depicted as a "blue -line" stream on the USGS topographic map and as a Riverine feature in the National Wetland Inventory. Drainage patterns apparent on historical topographic maps and aerial photographs suggest the drain is a realigned ephemeral creek that once flowed into Duck Creek further west of the site. While some sections of Bieghle Drain to the west of the site have been piped, the drain is still tributary to Duck Creek. Duck Creek is tributary to the San Joaquin River and the San Joaquin River is a navigable jurisdictional Water of the U.S. The tributary relationship of Bieghle Drain to the San Joaquin River forms the basis for it being a potentially jurisdictional Water of the U.S. The section of Duck Creek that flows through the project site is trapezoidal in shape with a mean width of 25 feet. The creek flows east to west and conveys water from seasonal storms, as well as agricultural tail water much of the year. Duck Creek is depicted as a "blue -line" stream on the USGS topographic map and as a Riverine feature in the National Wetland Inventory. Duck Creek is tributary to the San Joaquin River, and the San Joaquin River is a navigable jurisdictional water of the U.S. The tributary relationship of Duck Creek to the San Joaquin River forms the basis for it being potentially a jurisdictional Water of the U.S. Habitat Conservation Plans The San Joaquin County Multi -Species Open Space and Habitat Conservation Plan (SJMSCP) is a comprehensive plan for assessing and mitigating the biological impacts of converting open space or biologically sensitive lands to urban development in San Joaquin County and its incorporated cities. For the conversion of open space to non -open space uses that affect covered plant, fish, and wildlife species, the SJMSCP provides three compensation methods: preservation of existing sensitive lands, creation of new comparable habitat on the project site, or payment of fees that would be used to secure preserve lands outside the project site. In addition to fee payments, the SJMSCP identifies Incidental Take Minimization Measures - protection measures that avoid direct impacts of development on special -status species - with which projects are required to comply (SJCOG 2000). The San Joaquin Council of Governments (SJCOG) implements the SJMSCP on a project -by -project basis. Environmental Impacts and Mitigation Measures a) Special -Status Species. A search of the California Natural Diversity Database, conducted as part of the biological assessment, indicated the presence of 28 special -status species for the USGS Stockton East and Stockton West quadrangles, within and near which the project site is located. These include plant species considered rare or endangered under the conditions of Section 15380 of the CEQA Guidelines, such as those plant species identified on Lists 1A, 1B and 2 in the Inventory of Rare and Endangered Vascular Plants of California by the California Native Plant Society. Table 3-3 lists the species identified in the California Pock Lane Public Review Draft IS/MND 3-15 May 2022