Oracle Design Tech Charter School Civil Improvements Biological Resources Report Project #3732-01 Prepared for: Shannon George David J. Powers & Associates 1871 The Alameda, Suite 200 San José, CA 95126 Prepared by: H. T. Harvey & Associates 9 October 2015 983 University Avenue, Building D Los Gatos, CA 95032 Ph: 408.458.3200 F: 408.458.3210 Table of Contents Section 1.0 Introduction ............................................................................................................................................. 1 1.1 Project Summary ..................................................................................................................................................... 1 1.2 Existing Site Characteristics ................................................................................................................................... 1 1.2.1 Property Description ...................................................................................................................................... 1 1.2.2 Existing Land Use and Topography ............................................................................................................ 1 1.3 Proposed Site Development .................................................................................................................................. 2 Section 2.0 Methods .................................................................................................................................................... 7 2.1 Background Review ................................................................................................................................................ 7 2.2 Site Visits ................................................................................................................................................................... 7 2.2.1 Congdon’s Tarplant Survey ........................................................................................................................... 7 Section 3.0 Regulatory Setting .................................................................................................................................... 9 3.1 Federal ....................................................................................................................................................................... 9 3.1.1 Clean Water Act............................................................................................................................................... 9 3.1.2 Rivers and Harbors Act ................................................................................................................................ 10 3.1.3 Federal Endangered Species Act ................................................................................................................ 11 3.1.4 Magnuson-Stevens Fishery Conservation and Management Act .......................................................... 11 3.1.5 Migratory Bird Treaty Act ............................................................................................................................ 12 3.1.6 Marine Mammal Protection Act ................................................................................................................. 12 3.2 State Regulations .................................................................................................................................................... 13 3.2.1 Porter-Cologne Water Quality Control Act .............................................................................................. 13 3.2.2 California Endangered Species Act ............................................................................................................ 14 3.2.3 California Environmental Quality Act ....................................................................................................... 14 3.2.4 California Fish and Game Code ................................................................................................................. 16 3.2.5 The McAteer-Petris Act ............................................................................................................................... 17 3.3 Local Regulations .................................................................................................................................................. 18 3.3.1 Redwood City Tree Ordinance ................................................................................................................... 18 Section 4.0 Environmental Setting .......................................................................................................................... 19 4.1 General Project Area Description ...................................................................................................................... 19 4.2 Soils .......................................................................................................................................................................... 19 4.3 Biotic Habitats and Associated Wildlife ............................................................................................................ 19 4.3.1 Developed ...................................................................................................................................................... 20 4.3.2 Landscaped ..................................................................................................................................................... 22 4.3.3 Ruderal ............................................................................................................................................................ 23 4.3.4 Peripheral Halophytes .................................................................................................................................. 25 4.4 Wildlife Movement ................................................................................................................................................ 26 4.4.1 Belmont Slough ............................................................................................................................................. 27 4.4.2 Pacific Flyway Stopover ............................................................................................................................... 27 4.5 Special-Status Plant and Animal Species............................................................................................................ 27 4.5.1 Special-status Plant Species .......................................................................................................................... 28 4.5.2 Special-status Animal Species ...................................................................................................................... 32 4.5.3 Sensitive Natural Communities, Habitats, and Vegetation Alliances ................................................... 52 4.5.4 Non-Native and Invasive Species ............................................................................................................... 53 Section 5.0 Impacts and Mitigation Measures ....................................................................................................... 54 5.1 Impacts on Biological Resources Found to Be Less than Significant ........................................................... 55 5.1.1 Impacts on Upland Habitats and Communities ....................................................................................... 55 5.1.2 Impacts on the Alameda Song Sparrow .................................................................................................... 55 Oracle Design Tech Charter School Civil H. T. Harvey & Associates i Improvements Biological Resources Report 9 October 2015 5.1.3 Impacts on Habitat for and Individuals of Certain Nonbreeding Special-status Wildlife Species .. 57 5.1.4 Impacts on the Pacific Harbor Seal ............................................................................................................ 58 5.1.5 Impacts on Certain Common Wildlife Species ........................................................................................ 58 5.1.6 Impacts on Terrestrial Wildlife Movement ............................................................................................... 59 5.1.7 Conflicts with Approved Plans ................................................................................................................... 60 5.2 Impacts on Biological Resources Found to Be Less than Significant with Mitigation .............................. 60 5.2.1 Impacts on Potentially Regulated Wetlands and Water Quality ............................................................ 60 5.2.2 Impacts on the Central California Coast Steelhead, Green Sturgeon, Longfin Smelt, Chinook Salmon, and Essential Fish Habitat .......................................................................................... 63 5.2.3 Impacts on the Salt Marsh Harvest Mouse and Salt Marsh Wandering Shrew ................................... 64 5.2.4 Impacts on Nesting California Ridgway’s Rails ........................................................................................ 67 5.2.1 Impacts due to the Spread of Invasive Species ........................................................................................ 69 5.2.2 Impacts Due to Bird Strikes ........................................................................................................................ 69 5.2.3 Impacts on Protected