SR 05:187 - Laserfiche WebLink

Valley Avenue Extension Valley Avenue was extended southerly from Bernal Avenue through the central parcel of the Bernal Property and will ultimately connect to Case Avenue at Junipero Street. The portion of Valley Avenue completed includes four landscaped roundabouts, landscaped medians, sidewalk on the east side, public utilities, and two bus shelters. The bus shelters will be privately maintained. The City Attorney has approved maintenance agreements for these shelters. The portion of Valley Avenue from the traffic roundabout at Laguna Creek Lane to Case Avenue, which includes the Valley Avenue underpass for the Union Pacific Railroad, will begin construction this year. A separate improvement agreement and improvement bonds have been posted for this work (separate agenda item). Storm Water Detention Basins And Bio-Swales Dual-purpose water quality/detemion basins have been incorporated in the design of the storm water runoff facilities for this project. In conformance with the Development Agreement for this project, the detention ponds are located on the public parcels and will be maintained by the City. One basin is located on the central parcel and the other basin is on the western parcel. The basins are intended to mitigate the impacts of urban non-point source pollution on receiving waters, and to reduce peak storm water flow to or below pre-developmetu levels. Another important design feature is the complete drying of the basins each year to preclude the colonization of the basins by non-native bullfrogs, predators of the endangered native red- legged frog. The basins were not intended in the original design to be wetland mitigation features. All maintenance and monitoring activities will be by City staff. Landscaping plans were approved for both basins, however, rather than install landscaping, which may ultimately conflict with the Bernal Property Phase II Specific Plan, staff recommended that the developer contribute the cost of the approved landscaping which would be used for a plan consistent with the Specific Plan. The developer has submitted $100,000 for future landscaping of the basins. Along with the detention basins, bio-swales were also incorporated in the design for mitigation of urban storm water nmoff. These grassy swales are designed to ~ter pollutants from roadway storm water runoff before entering the detention basins. The developer has agreed to a comprehensive maintenance plan to help establish the grassy swales. The swales are not ready at this time; however, they should be ready next year for City acceptance. The completion of these grassy swales will be bonded by the developer and included in the first Amendment to the Off-Site Improvement Agreement. These swales include those adjacent to SR:05:187 Page 4 of 6