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90. There shall be no direct roof leaders connected to the street gutter or storm drain system, unless otherwise approved by the City Engineer. 91. Each lot shall have an independent water lateral connection to the public water main per Municipal Code Section 14.04.050.C. 92. Each lot shall have an independent sanitary sewer service lateral connection to the public sanitary sewer main per Municipal Code Section 15.32.090.A. 93. The minimum grade for the gutter flowline shall be set at one percent where practical, but not less than .75% unless otherwise approved by the City Engineer. 94. A detailed grading and drainage plan prepared by a licensed Civil Engineer including all supporting information and design criteria (including but not limited to any peer review comments), storm drain treatment calculations, etc., shall be submitted as part of the improvement plans. 95. 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. 96. All landscaping within public right -of -way along the project's frontage shall be maintained by the homeowners association unless otherwise approved by the City Engineer and necessary irrigation system, irrigation water meter, irrigation valves, irrigation controller, etc. have been included on the plan for maintenance of all landscaping within public right -of -way. 97. The project developer shall comply with the recommendations of the project's geotechnical consultant. The project developer's geotechnical consultant shall review and approve all foundation, retaining wall, and drainage geotechnical aspects of the final development plans to ensure that the recommendations have been properly incorporated into the development. The consultant shall certify by writing on the plans, or as otherwise acceptable to the City Engineer, that the final development plan is in conformance with the geotechnical report approved with the project. 98. The project developer shall arrange and pay for the geotechnical consultant to inspect and approve all foundation, retaining 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. P16 -1201, P16 -1202 & PUD -120, Catalyst Development City Council Page 17 of 30