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� <br /> � <br /> Devcloned Conditions <br /> � The proposcd developmcnt includes a 4,250-square-foot(SF)building, a drive-through area,a <br /> small parking lot, and �valkways. The building will be located at the southwest comer of thc <br /> � property, abutting Colby Aver.uc and 26'h Strcct right-of-N-ays. 1'he drive-through will be <br /> adjacent to the building on lhe north. The small parking lot will be located along the eastern <br /> propetiy line, betwccn the proposcd building and the allcy. <br /> � The builJing finish (loor�vill be set slightly higher than the adjacent�xisti»g side�valks. 7'hc <br /> drive-through arca will bc graded to promote positivc drainagc away from the building. Stomi <br /> I runoff from the drive-through �vill be collectcd by catch basins, convcycd by an underground <br /> tightlined system, and discharged to the ex•;,ting catch basin at the south cnd of the allcy. Water <br /> from thcre will be convcycd and discharged into thc combincd sewer main in 26°i Strcet. RunofT <br /> Q from thc building roof will be collected by an underground rooCdrain system and connected to <br /> � the on-site drainage systcm. Storni runofl'at the parking lot will :lrain as sheet Oow to thc <br /> cxisting calch basin at the south end of thc allcy. ?do storniwater detention or watcr quality <br /> ItrcaUnent is rcquired for thc projcct. <br /> I Table 1 shows Qte esisting and devcloped site conditions. I�igures 3 and 4 show the proposed <br /> site grading and drainage plan, respectivcly. <br /> ITablc 1 —Exisling and Proposed Sitc Conditions. <br /> ( Pnrking& �Valk�vay& <br /> Total Arca 13uilding Landscaping % of <br /> Condition �S� �5� Dri��s-Ihru Hardscapc �sn Impervious <br /> I Existin 11,004 0 11,00� 0 0 100 <br /> Devclo cd 11,004 4.?50 4,514 700 1,540 86 <br /> I III. OFF-SITE ANALYSIS ' <br /> I Thc project site is located in the combincd sc�acr system arca. Stomi runoff from the site will be <br /> collected into the city combined sewcr tnain in U�e alley adjacent to qie sile on the east. Through <br /> I the city se�vcr main systems, storn� runoff t�om the site is conveyed and eventually discharged to <br /> thc city lrcatment plant. <br /> IThe r.ity sewer syslem is a tighdine system. No erosion in the sewer system is anticipated. <br /> 1 <br /> I <br /> [3anner Dank and Mortgage Cenicr, Gvcreu 4 Scptember 2008 <br /> IStonnwater Sitc Plan � �� � <br />