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50. Any damage to existing public street improvements during construction on the subject property shall be repaired to the satisfaction of the City Engineer at full expense to the applicant. This shall include slurry seal, overlay, or street reconstruction if deemed warranted by the City Engineer. 51. The project developer shall construct vertical P.C.C. curbs and gutters within this development. 52. The applicant shall submit a refundable cash bond for hazard and erosion control prior to issuance of an Engineering permit. The amount of this bond will be determined by the City Engineer. Urban Stormwater Design Requirements 53. The following requirements shall be incorporated into the project: The applicant shall submit a detailed grading and drainage plan prepared by a licensed civil engineer depicting all final grades and on -site drainage control measures. This plan shall be subject to the review and approval of the City Engineer prior to the issuance of the first grading permit for the development covered by this approval. Bulk construction materials stored outdoors that may contribute to the pollution of storm water runoff shall be covered as deemed appropriate by the City Engineer and /or the Building and Safety Division. Unless otherwise approved by the City Engineer, there shall be no direct roof leaders connected to the storm drain system. Urban Stormwater Construction Requirements 54. The applicant is responsible for implementing the following measures during all construction phases of the project: The applicant shall include erosion control /storm water quality measures on the final grading plan which shall specifically address measures to prevent soil, dirt, and debris from entering the storm drain system during construction. Such measures may include, but are not limited to, hydroseeding, hay bales, sandbags, and siltation fences and are subject to the review and approval of the City Engineer and /or the Building and Safety Division as applicable. The applicant is responsible for ensuring that their contractors and sub contractors are aware of and implement these measures. No grading shall occur between October 15`" and April 15 unless approved erosion control /storm water quality measures are in place, subject to the approval of City Engineer and /or the Building and Safety Division as applicable. Such measures shall be maintained until such time as building construction begins. Gather all construction debris on a regular basis and place it in a dumpster or other container which is emptied or removed on a weekly basis. When appropriate, use 8