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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 />0.2410.1540.048 <br />Q10 (cfs) Q25 (cfs) <br />0.185 <br />Acres Q10 (cfs)Q25 (cfs) <br />Section I: Project Description <br />- The project site is approximately 0.048 acres which located at 1225 N.West St in the City of <br />Santa Ana <br />- The existing site is a vacant lot. <br />- The proposed site includes: <br />- New detached ADU 798SF. (two bedrooms, two bathrooms). <br /> + Pervious: 1,043 SF <br /> + Impervious: 1,032 SF <br />There are 1 proposed drainage areas: <br />- DMA-A: Storm water will be captured via onsite storm drain facilities and surface drainage, <br />then discharged to the street, following its existing drainage path. <br />Acres Q100 (cfs) <br />Q100 (cfs) <br />0.048 0.155 0.186 0.240 <br />3