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78. For purposes of erosion control, the project developer shall plant a hydroseed mixture that has been designed by the project Landscape Architect. The hydroseed mixture shall be specified on the building permit plans for review and approval by the Director of Community Development and shall be maintained by the project developer until such time as permanent landscaping is place. Tree Requirements 79. The project developer shall comply with the recommendations of the tree report prepared by Hort Science dated August, 2011. The project developer shall arrange for the horticultural consultant to conduct a field inspection prior to issuance of grading permits to ensure that all recommendations have been properly implemented. The consultant shall certify in writing that such recommendations have been followed. 80. No trees shall be removed other than those specifically designated for removal on the tree report. The project developer shall post cash, letter of credit, or other security satisfactory to the Planning Division in the amount of $5,000 for each tree required-to-be-preserved, up to a maximum of $25,000. This cash bond or security shall be retained for one year following acceptance of public improvements or completion of construction, whichever is later, and shall be forfeited if the trees are destroyed or substantially damaged. 81. The project developer shall contribute $1,900 to the City's Urban Forestry fund for the removal of Tree #201, a 35-inch diameter Monterey pine and Tree #312, an 18-inch diameter Mexican fan palm before issuance of a grading permit. The Urban Forestry Fund is used to plant new trees in the City as well as conservation, promotion, and public education in regard to Pleasanton's street trees, park trees, and trees on private property. No contribution is required for the removal of the walnut trees. 82. The following statements shall be printed on to the site, grading, and landscape plans where applicable to the satisfaction of the Director of Community Development prior to issuance of a building permit a. No existing tree to be saved may be trimmed or pruned without prior approval by the Community Development Director. b. No equipment may be stored within or beneath the driplines of the existing trees to be saved. c. No oil, gasoline, chemicals, or other harmful materials shall be deposited or disposed within the dripline of the trees to be saved or in drainage channels, swales, or areas that may lead to the dripline. d. No stockpiling/storage of fill, etc., shall take place underneath or within five feet of the dripline of the existing trees to be saved. STANDARD CONDITIONS OF APPROVAL Building 83. All retaining walls higher than four feet from the top of the wall to the bottom of the footway shall be constructed of reinforced concrete, masonry, or other material as approved by the Director of Community Development, or shall be an approved crib wall type. Calculations signed by a registered civil engineer shall accompany the wall plans. 84. At the time of building permit plan submittal, the project developer shall submit a final grading and drainage plan prepared by a licensed civil engineer depicting all final grades and on-site drainage control measures to prevent stormwater runoff onto adjoining properties. Page 15