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3.2 Planting Disturbed areas will be seeded with a native grass revegetation hydroseed mix. In addition, native trees and shrubs will be planted in a naturalized manner to mimic the character of the surrounding native oak grassland. Planting will enhance the views to the open space, while shielding the view of the homes from the open space. The design intent is to select from a native plant palette that reflects the surrounding open space ecosystem of oak woodland and grassland. (See plant list located in Section 6.) The California Native Plant Society is a resource for finding an expanded list of plants and a listing of native plant nurseries (www.cnps.org). The final planting plan should be designed by a qualified Landscape Architect. Since the surrounding landscape is a fragile ecosystem, it is important for plantings to be non- invasive as they could easily spread into the surrounding open space. The California Invasive Plants Council (CAL-IPC at www.cal-ipc.org) is a resource for identifying invasive plants. CAL- IPC defines invasive plants as .... non-native plants that threaten wildlands and ... 1} are not native to, yet can be spread into, wildland ecosystems, and that also 2} displace native species, alter biological communities, or alter ecosystem processes." The CAL-IPC gUide defines invasive plants by region and proximity to ecological system invaded. The buffer zone is approximately 5,000 square feet. Most of this will be hydroseeded with grass mixes. In addition, approximately 60 trees and 1,000 square feet of shrubs and groundcovers should be planted. The plant list has a recommended on-center spacing for each tree and shrub. The plants should be placed in a triangulated spacing system, in clusters and in some cases solitary trees. The tighter spacing of shrubs in some areas will create a dense thicket of plants that will promote the development of an ecologically diverse habitat. Plants in the buffer zone will be planted in DeePot and TreePot sizes. A TreePot is a 4-inch by 14 inch deep container. Deepot containers are 2-1/2 inches by 10 Inches deep, and are considered the optimal planting size for restoration purposes. Cuttings for Willows and Cottonwoods are also acceptable. These should be planted in mid-winter (January - February). Erosion control seeding and hydroseeding of disturbed soils should be completed between September 15 and October 15th. Root containers and tree shelters should be considered to promote good growing environment and protect plants from animals. A wooden stake next to plants will also help identify plants during maintenance. Maintenance by the Developer will occur for up to three years. Maintenance will be required 2-4 times per month from March to October, and once a month from November to February. Dead plants should be replaced annually to help achieve a plant survival goal of 80% for the five year period following initial installation. Replacement plant species will be determined and based on analysis of survival rates and should not necessarily be replacement in kind. Weed eradication will need to occur prior to planting. Mulching and sustainable weed control methods are encouraged. Use mulches that are known to be free of known Sudden Oak Death (SOD) pathogens. Consult www.suddenoakdeath.org for more information. MEADOWLARK PLANNED UNIT DEVELOPMENT DESIGN GUIDELINES Pleasanton, California DRAFT May 2006 p.7