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851 MAIN STREET <br /> <br /> DES Project No. 10004.001 <br /> Project Description <br /> August 53, 2015 <br /> Page 8 of 10 <br /> <br /> <br /> <br /> <br />DES Architects + Engineers, Inc. <br /> <br />4. Section 2.7.4 Building Disposition Type Regulations stated that “building <br />disposition types” have been created to ensure that building masses are <br />“sculpted” in a way appropriate to their urban context, while also ensuring <br />environmental sustainability and livability by increasing the opportunities <br />for access to natural light and air. The project has taken an alternate <br />approach by stepping the building massing and creating roof-top patios on <br />the second and third floors of the Main Street side. <br /> <br />· Complies the historic resource and building height regulations <br />· Roof-top patios and the stepped massing are more effective in bringing <br />in views and day-light and make the space more livable. <br /> <br />Planning Application request <br />On December 8, the project applicant has filed for an amended application to the <br />City of Redwood City – <br /> <br />· General Plan Amendment <br />· Zoning Map/Text Amendment <br />· Environmental; Assessment <br />· Downtown Planned Community <br />· Tentative Map/Vesting Map <br /> <br />Storm Water Management <br />Drainage Basins: The existing site is separated into two (2) drainage basins. <br />The first basin discharges to Walnut Street via overland low, the second basin <br />discharges into the existing storm drain system in Main Street. The proposed <br />conditions mirror the existing drainage basins. <br /> <br />Detention: The proposed peak discharge rate in the Main Street drainage basin <br />does not exceed the existing condition. The storm water treatment flow-through <br />planter utilized for the Main Street drainage basin, also acts as a detention basin <br />to detain the difference between the existing condition 10-year and proposed <br />condition 30-year recurrence interval storm event. The outflow pipe from the <br />flow-through planter acts as an orifice that restricts the discharge rate from the <br />Main Street drainage basin to the existing condition 10-year storm event rate. <br />The proposed peak discharge rate in the Walnut Street drainage basin does not <br />exceed the existing condition. A detention tank is located within the second <br />basement level to detain the difference between the existing condition 10-year <br />8.A. - Page 16