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P23-0480 & Tract 8680, 3300 Busch Road Planning Commission 21 of 29 Woodard & Curran modeled sewer flows under peak wet weather flow (PWWF) conditions for the two proposed connection points, one at Boulder Street that will serve 337 residential units, and one at Busch Road that will serve 75 units. The study found, despite an increase in PWWF, that proposed Boulder Street connection will not result in downstream capacity issues. In contrast, results for the Busch Road connection indicate that downstream sewers will be adversely impacted. In particular, flows north through the existing Kamp Drive neighborhood will exacerbate a known problem titled “Capacity Project 4” in the City -wide master plan. The master plan estimated a project cost of $2,019,000 to construct Capacity Project 4. Woodard & Curran calculated the cost attributable to new customers, only including those from the project. The portion of the costs directly attributable to the project was estimated to be $222,275 or 11 percent of the total project cost. Staff discussed the proportional cost share with the applicant who agreed to pay this amount as their fair share of Capacity Project 4. Akel Engineering Group, Inc. prepared a Hydraulic Analysis to model domestic water demands from the proposed development. The analysis evaluated the existing and proposed pipelines relative to domestic and fire service demands. The analysis recommends a se cond service connection between Lots 30 and 31 to ensure “supply reliability and redundancy for these homes if one of the supply mains is out of service”, a feature now added to the project. The analysis also evaluated the relocation of an existing water pipeline extending through the project site to Pleasanton Garbage Service (PGS). The relocated pipeline has been included in the project utility design. Stormwater flows were evaluated by City staff. The proposed stormwater pipe network conveys flows to bioretention areas located along Valley Avenue and Busch Road. These areas will be designed to store and treat the water before discharge to the City’s sto rm drainage system. Larger storm events will bypass the treatment system and flow directly to the drainage system to prevent flooding. Typical Public Street Designs All streets within the development except for alleys in Village 1 are public streets. In addition to vehicle travel lanes, they generally include an approximately 5-foot-wide planting area coupled with an approximately 5-foot-wide sidewalk. Homes fronting streets would have a minimum front yard setback of approximately 10 feet to the home and approximately 18 feet to the garage. On-street parking is allowed when feasible and possible. The civil plans show a cross-section for each street and Figure 14 shows typical cross-section for an approximately 49-foot-wide public ROW and an approximately 56-foot-wide public ROW: Figure 14: Street Cross Sections