a. A map of the entire site, showing existing details and contours of the property and proposed contour modifications, using a minimum of ten (10) foot contour intervals at a scale of one inch equals one hundred (100) feet;

b. Map(s) of area(s) to be graded, showing existing details and contours at five (5) foot intervals where terrain will not be modified, and proposed details and contours of two (2) foot intervals where terrain modifications is proposed, using a scale of one inch equals twenty (20) feet;

c. An investigation of the effects of high-intensity rainstorm (one-hundred-year occurrence according to U.S. Department of Commerce Weather Bureau Frequency Curves), evaluating how the proposed drainage system will handle the predicted flows, including effects of drainage areas outside the development which drain through the subject area and the anticipated flow of the drainage leaving the development;

d. The history, including frequency and duration, or prior flooding;

e. The location of any existing buildings or structures on the development, and any existing buildings or structures on land of adjacent owners which are within one hundred (100) feet of the property, or which are on the land of adjacent owner and may be affected by the proposed development;

f. The direction of proposed drainage flow and the approximate grade of all streets (not to be construed as a requirement for the final street design);

g. Proposed plans and locations of all surface and subsurface drainage devices, walls, dams, sediment basins, storage reservoirs, and other protective devices, to be constructed with or as part of the proposed work, together with a map showing drainage areas and the proposed drainage network, including outfall lines and natural drainageways which may be affected by the proposed project. Including the estimated runoff of the areas served by the drainage plan;

h. A description of the method to be used on obtaining fill for use on the site of acquisition of such fill;

i. A description of methods of be employed in disposing of soil and other material which is removed from the site, including the location of the disposal site;

j. A plan showing temporary erosion-control measures to prevent erosion during the course of construction;

k. A schedule showing when each stage of the project will be completed, including the total area of soil surface which is to be disturbed during each stage and an estimate of starting and completion dates. The schedule shall be drawn to limit to the shortest possible period the time that soil is exposed and unprotected. In no event shall the existing natural vegetation or ground cover be destroyed, removed or disturbed more than fifteen (15) days prior to commencing grading for development as scheduled;

l. A written statement by the person or firm preparing the grading and drainage plan, identifying any grading and drainage problems of the development and further stating an opinion as to the ability of the proposed plan to mitigate or eliminate such problems in a manner as to prevent hazard to life, hazard to property, adverse effects on the safety, use or stability of a public way or drainage channel, and adverse impact on the natural environment.