(a) In addition to the plan requirement submittals, the necessary data required in Sections 1339.10 and 1339.11 (i.e., text material) shall be submitted along with a bound hydrologic and hydraulic study report. An electronic file of the entire submittal shall be submitted to the City Engineer. The developer shall submit an organized report of the hydrologic and hydraulic study which shall include but not be limited to the necessary data required in Sections 1339.10 and 1339.11; supporting documentation for the site complying with all federal, state, and local regulations; discussion of the site's pre -development storm water flows; discussion of the site's post-development storm water flows; design methodology incorporated; rationale for BMP selection; hydrographs, pipe sizing calculations, detention and retention calculations; items listed below; and any additional information requested by the city engineer or SWCD.
(b) The report ( sketches and maps may be placed on 11" by 17" sheets of paper folded into the report) shall include, but not be limited to:
(1) Soil map ( 1" = 200' Scale) with 2'- interval contours.
(2) All soil types with all ground cover, woodland, and other ground conditions noted.
(3) Total drainage area with before and after conditions noted.
(4) Legends for soils, area in acres, and soil groups.
(5) Copy of the U.S. Department of Agriculture SCS soil survey of Cuyahoga County showing the entire drainage area and sub-area.
(6) All existing drainage facilities.
(c) Drainage Area Maps Before and after Development:
(1) An aerial photograph with a scale 1" = 200', along with the entire drainage area and all sub -areas noted along with all existing land use conditions, contour shall be 2' interval minimum (any other submittal shall meet with prior approval of City Engineer).
(2) All existing drainage facilities with necessary field data.
(3) All natural waterways and cross sections of all waterways with any other data to sufficiently determine the exact time of concentration or travel time (label flow types as sheet, concentrated, channel or other types).
(4) All existing and proposed modifications to drainage system, pertinent drainage facilities beyond the development area.
(5) A complete storm sewer design noting all proposed storm sewers, culverts, and other storm sewer management facilities.
(6) Emergency flow way, the flow route for a 100 -year storm conveyed thru the proposed project and to the storm inlet or channel outside the project site.
(d) Summary of Long -Term Maintenance Plan.
(1) Statement of the person or entity who will own the detention or retention facilities, BMPs and storm water structures when the construction is completed.
(2) Statement of the person or entity responsible for long-term maintenance, repairs, and replacement of the BMPs, storm water conveyance, storage structures, basins, and all storm water related items.
(3) Statement of the person or entity responsible for the annual inspections of the post construction BMPs.
(Ord. 28-14. Passed 12-15-2014.)