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159. The project developer shall construct vertical P.C.C. curbs and gutters within this development unless otherwise approved by the City Engineer. When the sidewalk is adjacent to the curb and gutter, they shall be poured monolithically. 160. For new streets, the minimum grade for the gutter flow line shell be set at one percent where practical, but not less than .75% unless otherwise approved by the City Engineer. The existing streets shall have grade to match existing site conditions subject to review by the City Engineer. 161. The curb and gutter along the street shall have a sub drain insta led at either the back of the curb or lip of gutter at the discretion of the City Engineer. This detail shall be shown on the improvement plans. Said drains shall be connected to the storm drain system or drained by other means acceptable to the City Engineer. 162. The applicant's engineer shall investigate the structural section of the existing streets fronting 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. If the street section is adequate the entire street frontage shall be slurry sealed, unless otherwise determined by the City Engineer. 163. All existing septic tanks or holding tanks, if any shall be properly abandoned, pursuant to the requirements of the Alameda County Department of Health Services prior to the start of grading operations, unless specifically approved by the City Engineer. 164. The project developer shall submit detailed landscape and irrigation plans as part of the improvement plans. The irrigation plan shall provide for automatic controls. 165. All dry utilities (electric power distribution, gas distribution, communication service, Cable television, street lights and any required alarm systems) required to serve existing or new development shall be installed in conduit, underground in a joint utility trench unless otherwise specifically approved by the City Engineer. 166. The project developer shall arrange and pay for the geotechnical consultant to inspect and approve all foundation, retaining, and wall and drainage geotechnical aspects of project construction. The consultant shall be present on site during grading and excavation operations. The results of the inspections and the as-built conditions of the project shall be certified in writing by the geotechnical consultant for conformance to the approved plans and geotechnical report and submitted to the City Engineer for review and approval prior to occupancy. 167. The encroachment permit for work in public right of way shall be approved by the City Engineer prior to the issuance of any permit by City Building Division or Engineering Division. Any damage to existing street improvements during PUD-87, Auf der Maur/ Rickenbach /Vintage City Council Page 27 of 39