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Page 42 h. Energy dissipators i. Hydraulic grade lines j, Minimum and maximum velocities B, DRAINAGE PLAN SHEET(S) 1, SITE LOCATION MAP - a portion from the Map in Appendix D a, Major drainage basin b, Sub basin boundaries and acreage c. Floodway and Flood Plain area d, Site location 2, SITE DRAINAGE PLAN - SHOW THE FOLLOWING: 1, Existing and proposed 2-foot contours based on USGS datum (existing contours to extend at least 50' beyond property line, ) 2, Location and elevation of USGS benchmarks or benchmarks referenced to USGS, 3, Existing and proposed property lines, 4, Present drainage easements, 5. Street names and grades, 6. Right-of-way and easement requirements, 7, Routing and accumulative flows at the upstream and down- stream ends of the site and at various critical points on-site for both initial and major storm run-off, The inflow and outflow from each subbasin shall be shown for both the initial and major storms, *8, Finished floor elevations for protection from major storm run-off, *9, Street cross-sections showing the lOa-year flood levels, la, Existing and proposed flood plains and major channels, 11. Detention pond design and drawings including the follow- ing: a, Location of each detention area b, Release rates for 5 year and 100 year storms, c, Storage volumes required and provided, *d, Site plan on 1" = 50' scale or larger with two-foG~ contour intervals, *e. Inlet and outlet structure design details and opera- tional data (5 year and 100 year depths), *f. Emergency excess storm water passage design details, *g, Side slopes, 12, Open channel flow in major channels shall be provided with the following information for both storms: a, Profiles showing existing and proposed channel grades and water surface profiles. *b. Cross-sections on IOO-foot stations showing existing and proposed cross sections and required rights-of- way, *c, Locations and size of all existing and proposed structures.