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the limits of this development with the approval of a modification of the PUD development plan including an environmental determination. Engineering Requirements 37. The sanitary sewer gravity main and the sanitary force main and pump stations serving Lots 30 through 32 are private and shall be maintained by the individual property owners or the Homeowners Association, as determined in the CC&R's. 38. Lots 10, 26, and 51 require individual, sanitary-sewer ejector pumps and force mains. The ejector pumps and force mains for these lots shall be provided by the individual lot owners, are private, and shall be maintained by the individual property owners. Other lots may be required to provide such infrastructure and shall be determined through engineering design and shall be shown on the grading/utility plans of the building permit plans for these lots to the satisfaction of the Chief Building and Safety Official. 39. The project developer shall show to the satisfaction of the City Engineer the following changes on the tentative subdivision map and/or the grading/utility plans submitted with the tentative map: a. The sanitary sewer line within the access road to the water reservoir/staging area and restroom shall be eight inches in diameter unless otherwise approved by the City Engineer. b. The sanitary sewer mains and laterals within the street rights-of-way shall be PVC SDR 26 unless otherwise approved by the City Engineer. There shall be a two-way cleanout on the gravity sanitary sewer lateral for each lot, located at the back of the curb. c. All water lines with internal pressures of 120 p.s.i. or greater, which occurs while the reservoir is being filled with water, shall be constructed of ductile iron pipe. d. All individual water laterals to the homes on these lots shall have a minimum diameter of two inches from the water main to water meter. All water laterals with a static water pressure of 80 p.s.i. or greater shall have individual pressure reducing valves located on the service end. A note shall be placed on the improvement plans submitted with the final subdivision map indicating which lots will require the valve. e. Lots 1 through 7 shall be served from the Kottinger Ranch "A" Zone reservoir. All other lots shall be served from the proposed "B" Zone reservoir. f. The lots above a 780-foot elevation shall have individual booster pumps on the water service. The booster pumps are private and shall be provided and maintained by the individual property owners. The pump locations shall be shown on the individual homes' grading/utility plans submitted with the Page 1 S of 37