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51.The applicant and/or the applicant's contractor(s) shall obtain an encroachment permit from the City Engineer prior to moving any construction equipment onto the site. 52.The applicant shall submit a final grading and drainage plan prepared by a licensed civil engineer depicting all final grades and drainage control measures, including concrete-lined V-ditches, to protect all cut and fill slopes from surface water overflow. This plan shall be subject to the review and approval of the City Engineer prior to the issuance of a subdivision grading permit. 53.The applicant shall include erosion control measures on the final grading plan, subject to the approval of the City Engineer. The applicant is responsible for ensuring that the contractor is aware of such measures. All cut and fill slopes shall be revegetated and stabilized as soon as possible after completion of grading, in no case later than October 15. No grading shall occur between October 15 and April 15 and when rain is expected within 48 hours unless approved erosion control measures are in place, subject to the approval of the project Qualified Storm Water Pollution Prevention Plan Developer (QSD) and the City Engineer. Such measures shall be maintained until such time as a permanent landscaping is in place. 54.Storm drainage swales, gutters, inlets, outfalls, and channels not within the area of a dedicated public street or public service easement approved by the City Engineer shall be privately maintained by the property owners or through an association approved by the City. 55.The applicant shall post with the City, prior to approval of the final map, a separate performance bond for the full value of all subdivision improvements that are not to be accepted by the City of Pleasanton. 56.The applicant's engineer shall investigate the structural section of the existing driveway including, but not limited to emergency vehicle and fire truck access serving the development. If the structural section is not adequate for the anticipated traffic demand, the structural section of the roadway shall be increased, as determined by the City Engineer. 57.AII existing drainage swales that are filled shall have subdrains installed unless otherwise approved by the City Engineer and the applicant's soils engineer. All subdrains shall have cleanouts with metal caps installed at the beginning of the pipe. The end of the pipe shall terminate in a storm drain or other storm drain outfall, subject to the approval of the City Engineer. The applicant's engineer shall submit a final subdrain location map to the City Engineer prior to acceptance of the public improvements. It shall be the responsibility of the homeowner to relocate a subdrain, if during the excavation of a pool or other subsurface structure, a subdrain is encountered. All owners within the subdivision shall receive notice of the presence of these subdrains. The City Attorney shall approve said notice.