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Page 7 of 18 understand a potential cost-sharing framework, the analysis divided this cost based on flows needed to supply water for each project; a pro-rata share contribution from each project was calculated to assist owners in understanding the expected financial burden. The analysis assumes the City would not contribute funding, since the pipeline would be installed for the benefit of the new private development in East Pleasanton, rather than correcting an existing deficiency or serving other properties outside the study area. Phasing of the pipeline was also considered since it is assumed not all projects will be constructed at once. Whether phased or constructed in full, a complete pipeline is ultimately needed for operational redundancy and water quality. Cooperation between owners would be needed to construct the pipeline. Wastewater: Woodard & Curran prepared a Draft Sewer Impact Study that analyzes capacity in the City’s sanitary sewer collection network between the East Pleasanton annexation area and the Dublin San Ramon Services District treatment plant. The study identified three significant sewer network deficiencies that would require correction before the proposed projects could connect. From upstream to downstream the deficiencies include (1) undersized pipes on Kamp Drive and Begonia Court, south of Mohr Avenue; (2) undersized pipes on Palmer Drive, Cameron Avenue, Kamp Drive, and Stoneridge Drive north of Mohr Avenue; and (3) an undersized sewer siphon under Arroyo Mocho creek at Santa Rita Road. Approximately 5,300 lineal feet of pipe requires upsizing within existing neighborhoods; the cost is currently being studied. Similar to the water analysis, a potential cost-sharing framework will be developed that divides the total cost based on flow contributions from each project. Phasing opportunities are limited since all scenarios require the upsizing of existing pipes. The study assumed no funding contribution from the City since all network deficiencies are caused by the new development. Cooperation between owners would be needed to address these network deficiencies in a coordinated and comprehensive way. The developer of the Kiewit property at 3300 Busch Road has already agreed to fund their estimated share of network upgrades. Storm Drain The projects rely on stormwater discharge to Cope Lake, one of the chain-of-lakes operated by Zone 7 Water Agency. The applicants claim to have historic drainage rights for this discharge. State of California regulations require stormwater to be treated to remove pollutants before discharge. In Zone 7’s comment letter to Alameda County for the Arroyo Lago DEIR, the manner of treatment was questioned. In addition to common pollutants, Zone 7 expressed concern over PFAS discharge into Cope Lake which it operates for groundwater basin recharge; it is assumed Zone 7 will continue to question this issue whether the projects are built under County jurisdiction or in the city after annexation. The City operates a pipe network on Busch Road for storm drainage, although no analysis has yet been conducted to evaluate capacity or feasibility for connection. Traffic/Roadway Improvements Staff expects that circulation and roadway improvements needed to serve the Arroyo Lago and East Lakes projects, as well as other projected traffic growth in Pleasanton, will include: • Busch Road: Two-lane roadway with roundabouts or four-plus lanes at intersection. The Arroyo Lago and East Pleasanton projects will reserve additional right-of-way to accommodate a four-lane roadway, which is projected to be needed in the long term, Page 206 of 749