Reso PC15-01 PC Reso (3051 ) to Adopt Initial Study-Mitigated Negative Declaration - La Palma

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1.0 Project Description Private streets and driveways would include permeable pavers to meet the standard requirements for pervious area.The total pervious area on-site would be 62 percent,where a minimum of 40 percent is required for the site. A total of 33 parking spaces are provided including 24 garage parking spaces and 9 on-site guest parking spaces. Landscaping The project includes removing 25 trees (10 protected and 15 fruit) and maintaining 10 trees(four protected oak and redwoods and six fruit trees). The entrance to the project would include four field-grown specimen accent palm trees.Up to 26 additional trees may be added for a total of 36 trees. A unified landscape maintenance program would be developed and implemented.Plants would be limited to City-preferred plant lists that include native and drought-tolerant species. Backyards would also include trees as part of the Planned Development. Project lighting would include ambient lighting throughout the project, decorative bollards along KentfieId Avenue and up-light spotlights at selected signature trees.The project would also include a small playground located off of the private entry street from Kentfield Avenue. Drainage Plan The site currently has 17,177 square feet of impervious areas. The impervious surface area would increase to 30,586 square feet post-construction,resulting in a net change increase of 13,409 square feet of impervious surfaces on the project site. A SWCP would be prepared to detail the permanent stormwater management facilities that would be incorporated into the project to treat storrnwater runoff and to control runoff rates and volumes after the construction process. These designs features would include the use of permeable pavers,rooftop drain downspouts to bio-retention basins (landscape swales), area drains, and a stormwater detention system on the project site.The on-site storm drainage system would collect runoff from buildings,landscape, and hardscape areas to prevent localized ponding of storm water. Area drains would collect runoff and direct it to a new on-site below grade detention system that would be discharged into a new off-site storm drain system under Kentfield Avenue,which would connect to the City's existing storm drain system. There is currently no public storm drain system within the frontage of the project. The City's existing storm drain system is located approximately 500 feet northwest of the project site on Kentfield Avenue. As part of the project, approximately 500 feet of storm drain pipe and associated storm drain structures would be installed within Kentfield Avenue to connect the project to the City's existing storm drain system. Project Construction Project construction would last approximately 16 months. Construction of the 12 single-family residential units, associated landscaping, and driveways and walkways would require excavation and grading activities. During construction, workers are anticipated to be on-site five day a week on weekdays,as schedule requires. La Palma Subdivision Project Final Initial Study/Mitigated Negative Declaration 14