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Base on the attached calculations the anticipated runoffs of the post-development are: <br />Existing <br />Area <br />A <br />Proposed <br />Area <br />A <br />Q100 (cfs) <br />0.125 0.372 0.445 0.575 <br />Section I: Project Description <br />- The project site is approximately 0.125 acres which located at 512-514 Huylars Ln in the City <br />of Santa Ana <br />- The existing site of disturbed area is vacant land. <br />- The proposed site includes: <br />+ 2 1-story ADU: 954.75 sf for each ADU. <br />+ Concrete driveway (400 sf), concrete walkway (599 sf), concrete landing 46 sf. <br />+ Landscape: 5,504.5 sf. <br /> + Pervious: 2,505 SF <br /> + Impervious: 2,955 SF <br />There are 1 proposed drainage areas: <br />- DMA-A: Storm water will be captured via onsite storm surface drainage, then discharged to <br />the street, following its existing drainage path. <br />Acres Q100 (cfs)Q10 (cfs) Q25 (cfs) <br />0.423 <br />Acres Q10 (cfs) Q25 (cfs) <br />0.5510.3500.125 <br />3