Biological Resources Evaluation Mace Ranch Innovation Center Project Yolo County, CA
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Biological Resources Evaluation for the Mace Ranch Innovation Center Project Yolo County, CA Prepared by: Sycamore Environmental Consultants, Inc. 6355 Riverside Blvd., Suite C Sacramento, CA 95831 Phone: 916/ 427-0703 Contact: Mike Bower, M.S., PWS #2230 Prepared for: The Buzz Oates Group of Companies 8615 Elder Creek Road Sacramento, CA 95828 Phone: 916/ 379-3838 Contact: Alisha Olson, Development Project Manager August 2015 [This page intentionally left blank] Biological Resources Evaluation Mace Ranch Innovation Center Project Yolo County, CA Biological Resources Evaluation for the Mace Ranch Innovation Center Project Yolo County, CA TABLE OF CONTENTS I. SUMMARY OF FINDINGS AND CONCLUSIONS ...................................................................... 1 II. INTRODUCTION ............................................................................................................................... 2 A. Purpose of Report ............................................................................................................................. 2 B. Project Location ................................................................................................................................ 2 C. Project Applicant .............................................................................................................................. 2 D. Project Description ............................................................................................................................ 2 III. STUDY METHODS ............................................................................................................................ 9 A. Studies Conducted ............................................................................................................................ 9 B. Survey Dates, Personnel, and Coverage ........................................................................................... 9 C. Problems Encountered and Limitations That May Influence Results ............................................... 9 D. Literature Search ............................................................................................................................... 9 E. Field Survey Methods ..................................................................................................................... 10 F. Mapping .......................................................................................................................................... 10 IV. ENVIRONMENTAL SETTING ..................................................................................................... 11 A. Soils ................................................................................................................................................ 11 B. Weather and Climate Conditions .................................................................................................... 12 C. Biological Communities ................................................................................................................. 15 1. Agriculture .............................................................................................................................. 21 2. Ruderal .................................................................................................................................... 21 3. Mace Drainage Channel .......................................................................................................... 21 4. Farm Roads / Disturbed ........................................................................................................... 22 5. Urban ....................................................................................................................................... 22 D. The Existing Level of Disturbance ................................................................................................. 22 V. BIOLOGICAL RESOURCES IN THE BIOLOGICAL STUDY AREA .................................... 23 A. Determination of Special-Status Species in the Biological Study Area .......................................... 23 B. Special-Status Species not in the Biological Study Area ................................................................ 24 C. Evaluation of Special-Status Wildlife Species ................................................................................ 24 1. Invertebrates ............................................................................................................................ 24 2. Reptiles .................................................................................................................................... 26 3. Birds ........................................................................................................................................ 28 D. Evaluation of Special-Status Plant Species ..................................................................................... 33 E. Evaluation of Special-Status Natural Communities ........................................................................ 38 F. Potentially Jurisdictional Waters .................................................................................................... 39 MRIC-BRE-Aug2015.docx 8/10/2015 Sycamore Environmental Consultants, Inc. iii Biological Resources Evaluation Mace Ranch Innovation Center Project Yolo County, CA G. Evaluation of Trees ......................................................................................................................... 39 VI. LITERATURE CITED & PERSONAL COMMUNICATIONS ................................................. 40 A. Literature Cited ............................................................................................................................... 40 B. Personal Communications ............................................................................................................... 43 VII. PREPARERS ..................................................................................................................................... 44 FIGURES Figure 1. Project Location ............................................................................................................................ 5 Figure 2. Aerial Photograph ......................................................................................................................... 7 Figure 3. Soils Map .................................................................................................................................... 13 Figure 4. Biological Resources Map .......................................................................................................... 17 TABLES Table 1. Survey Dates and Personnel ........................................................................................................... 9 Table 2. USGS Quads Evaluated for the Mace Ranch Innovation Center Project .................................... 10 Table 3. Biological Communities and Other Features in the BSA ............................................................ 15 Table 4. Special-Status Species with the Potential to Occur in the BSA ................................................... 23 Table 5. Summary of Potentially Affected Trees....................................................................................... 39 APPENDICES Appendix A. Plant and Wildlife Species Observed Appendix B. USFWS Species List Appendix C. CNDDB Summary Report and CNPS Inventory Query Appendix D. Photographs Appendix E. Species Evaluated Table Appendix F. Map of GGS Habitat by the Yolo Heritage Program Appendix G. Spring 2015 Botanical Survey Results Memo MRIC-BRE-Aug2015.docx 8/10/2015 Sycamore Environmental Consultants, Inc. iv Biological Resources Evaluation Mace Ranch Innovation Center Project Yolo County, CA I. SUMMARY OF FINDINGS AND CONCLUSIONS This biological resources evaluation report was prepared for the Mace Ranch Innovation Center Project (Project) to document baseline biological conditions observed in 2014. The report was updated in August 2015 to include the results of a spring botanical survey (Appendix G). The 265.09-ac Biological Study Area (BSA) is located adjacent to the east side of the City of Davis in Yolo County, CA. Elderberry shrubs, the host plant for the valley elderberry longhorn beetle (federally threatened), are present in the BSA. However, no exit holes for the beetle were observed on any of these plants. The agricultural and ruderal areas within the BSA provide foraging habitat for Swainson’s hawk (State threatened) and tricolored blackbird (State emergency listed). A few trees in the BSA and trees in two eucalyptus groves located near the BSA provide potential nesting habitat for Swainson’s hawk. The Mace Drainage Channel (MDC) provides marginal nesting habitat for tricolored blackbird. The BSA provides marginal to suitable foraging and/or nesting habitat for the following wildlife species of special concern: burrowing owl, mountain plover, white-tailed kite (fully protected), song sparrow – Modesto population, birds of prey, and migratory bird species. An estimated 10 individuals of Parry’s rough tarplant, a CNPS Rank 4.2 plant species, were found in the BSA south of Ikeda’s Market. No other potential special-status plants were observed. The botanical surveys were not conducted during the evident and identifiable period for all the plants with potential to occur in the BSA. A total of 0.81 ac of the MDC contains managed freshwater marsh vegetation and is a sensitive natural community.