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Tierra Data Inc. TIERRA DATA 10110 W. Lilac Road Escondido, California 92026 INCORPORATED www.tierradata.com Biological Resources and Wetland Report for The Villa at Mission San Luis Rey in Oceanside, California Prepared for: Bruce Russell Senior Partners West, LLC. 137 Fall River Road Idaho Springs, Colorado 80452 and Dan Niebaum, AICP Senior Planner The Lightfoot Planning Group 5750 Fleet Street, Suite 250 Carlsbad, CA 92008 P: (760) 692-1924 F: (760) 692-1935 March 31, 2009 1 Prepared M. Kellogg Certified Biologist Tierra Data Inc. 10110 W. Lilac Road Escondido, California 92026 [email protected] (760) 749-2247 phone (760) 751-9707 fax March 31, 2009 March 31, 2009 2 Table of Contents Summary of Findings..................................................................................................................... 3 Introduction and Project Description........................................................................................... 4 Methods and Limitations of Survey.............................................................................................. 4 Results.............................................................................................................................................. 9 Physical Characteristics .....................................................................................................................9 Vegetation...........................................................................................................................................9 Wetland Delineation.........................................................................................................................10 Plant and Wildlife Species ...............................................................................................................10 Habitat Assessment and Mitigation Measures........................................................................... 13 Conclusion..................................................................................................................................... 18 Appendix A: References Cited .................................................................................................. A-1 Appendix B: Site Photographs .................................................................................................. B-1 Appendix C: Wetland Delineation Field Forms ...................................................................... C-1 Appendix D: Species List ........................................................................................................... D-1 Appendix E: Certifications and Qualifications........................................................................ E-1 Appendix F: Agency Correspondence on Mitigation Requirements......................................F-1 This page intentionally blank. Summary of Findings The construction of an assisted living retirement center facility “The Villa at Mission San Luis Rey” is expected to have negligible biological impacts. The majority of the site is mapped as non-native grassland or disturbed vegetation. The vegetation classified as non-native grass- land is a weedy subtype that lacks significant biological value. Discontiguous pockets of alkali freshwater marsh vegetation appear to be a remnant of earlier use during the Mission era as a garden, and from before the construction of Highway 76. They will likely disappear over time without any intervention, due to drawdown of the water table at the site and lack of any other hydrologic input. While these wetland patches are not jurisdictional under Section 404 of the federal Clean Water Act, nor are they expected to fall under the jurisdiction of Section 1601 of the California Fish and Game Code as a streambed, they do fall within the City of Oceanside’s commitment to the North County Multiple Habitat Conservation Program (2003) and the Draft Oceanside Subarea Plan (2005). This site is located in “Offsite Mitigation Zone I” of the Draft Oceanside Subarea Plan. The dominance of weedy species, the small, fragmented condition of the alkali marsh patches, and their separation from significant wetland resources result in low wildlife and natural resource values supported at the site. In addition, over time the patches are expected to die out due to a lack of hydrologic input that formerly allowed them to be established. For these reasons, with concurrence from the U.S. Fish and Wildlife Service and California Department of Fish and Game, a 1:1 ratio will be applied to this project. About 0.83 acres of this alkali marsh vegetation can be fully mitigated within the Mission grounds adjacent to the project site through the planned development of a wetland in the area of the Lavanderia. Genetic material from alkali marsh species will be recovered and reintro- duced into the future wetland adjacent to the site. The enhanced wetland will be integrated into the Mission’s plan to enhance the Lavanderia as a remembrance to the former splendor of the Mission gardens, and to establish a “best of San Diego County” native plant garden and inter- pretive trail. The wetland will be completed concurrently with The Villa retirement center project. In addition, 5.44 acres of non-native grassland will be mitigated at 0.5:1 consistent with the Oceanside Subarea Plan. After meetings between the City and U.S Fish and Wildlife Service (March 17, 2009), it was agreed that the City will explore a range of viable options including establishing an "in-lieu" mitigation fee for impacts to this habitat. Fees collected by the City could be used to acquire, manage, or restore critical open space parcels. In the meantime, this Villas at Mission San Luis Rey project may proceed by laying out a range of viable options for mitigating the grassland impacts, with the final mitigation plan in place prior to the issuance of grading or clearing permits (email Jerry Hittleman Oceanside City Planner, March 18, 2009). Based on a site visit by California Department of Fish and Game on July 1, 2008, no Stre- ambed Alteration Agreement will be required for this project. No sensitive species were located on the property, and all species identified were associated with a disturbed condition, with non-native forbs predominating. March 31, 2009 3 Introduction and Project Description The development plan(s) for an assisted-living retirement center “The Villa at Mission San Luis Rey” encompasses about eight acres at the Mission San Luis Rey in the City of Oceans- ide, California (Figures 1 and 2). The site is part of a 53.4-acre parcel at the intersection of Mission Avenue and Rancho del Oro Drive, located in Township 11 South, Range 4 West, Section 8. The development site is roughly the shape of a triangle, and is bounded to the south by Mission Avenue, to the west by a mobile home park, to the north by Peyri Road, and to the east by the Lavanderia archeological site (Figure 3), which is separated from the retirement center site by a constructed berm. The project site was formerly a garden during the Mission era, watered by its own drainage from adjacent hills, and via aqueducts from the Lavanderia. A Mission-era aqueduct leading from the San Luis Rey River, along with wells, served the mission needs including the Lavanderia, and perhaps 500 acres of garden during the Mission period (Brother James Lockman, pers. comm.). This development of “The Villa at Mission San Luis Rey” is part of a larger plan to restore and improve the Mission and its grounds as both a historic site and center for the work of the Order of Franciscan Friars. The development employs an envi- ronmental sustainability planning model. The purpose of this document is to report on the biological resources of the property that may be impacted by the project, and to propose measures to avoid, minimize, or mitigate for any impacts in compliance with federal, state, and City of Oceanside regulations and ordinances. The site is mapped as “Disturbed” and located within “Offsite Mitigation Zone I” of the City’s Draft Subarea Plan under the North County Multiple Habitat Conservation Plan (MHCP). The Draft MHCP map shows a small inclusion of natural vegetation, apparently willows, which will be left intact by the project. Methods and Limitations of Survey The site was visited six times (March 30, March 31, April 9, April 11, 2007, and March 31 and April 3, 2008) by four biologists who have different species specialties: Elizabeth Kellogg, Scott Snover, Harry Smead, and Joulie Lambert. The biologists spent approximately 9 hours conducting wandering transects throughout the property and recording all plant and wildlife observations, as well as conducting the wetland delineation. The weather condition was usu- ally cool, 60-75 degrees Fahrenheit, with a dispersing marine layer allowing for warming tem- peratures as it cleared starting late mornings. In order to focus the survey effort with regard to species searches, the California Natural Diversity Database (CNDDB) (California Department of Fish and Game 2005) was consulted for previous records of sensitive species in the area. The results of that search are depicted in Figure 4. The nomenclature used for species in this document is consistent with that of Hickman (1993) for plants. For wildlife it is according to American Ornithologists Union (DeBenedictis 1989), Jameson and Peeters (1988), and Stebbens (1985). Plant community classification is that of Holland (1986). March 31, 2009 4 Figure 1. Project site and vicinity. March 31, 2009 5 Figure 2. Facility