Section 98-42. topographic data.
topographic data, as required as a basis for the subdivision preliminary plat in section 98-43, shall include existing conditions as follows, except when otherwise specified by the planning and zoning board:
(1) Boundary lines. Bearings and distances.
(2) Easements. Location, width and purpose.
(3) Streets. On and adjacent to the tract; name and right-of-way width and location; type, width and elevation of surfacing; any legally established centerline elevations; walks; curbs; gutters; culverts, etc.
(4) utilities. On and adjacent to the tract; location and size and invert elevation of sanitary, storm and combined sewers; location and size of water mains; location of gas lines, fire hydrants, electric and telephone poles and streetlights; if water mains and sewers are not on or adjacent to the tract, indicate the direction and distance to and size of nearest ones, showing invert elevation of sewers.
(5) Ground elevations. On the tract, based on a datum plane approved by the city engineer as follows:
a. For that land that slopes less than approximately two percent, show spot elevations at all breaks in grade, along all drainage channels or swales and at selected points not more than 100 feet apart in all directions.
b. For land that slopes more than approximately two percent, either show contours with an interval of not more than five feet, if ground slope is regular, and such information as is sufficient for planning purposes or show contours with an interval of not more than two feet, if necessary, because of irregular land or need for more detailed data for preparing plans and construction drawings.
(6) Subsurface conditions on tract. Location and results of tests made to ascertain subsurface soil, rock and groundwater conditions; depth to groundwater, unless test pits are dry at a depth of five feet; location and results of soil percolation tests, if individual sewage disposal systems are proposed.
(7) Other conditions on tract. Watercourses, marshes, rock outcrop, wooded areas, isolated preservable trees one foot or more in diameter, houses, barns, shacks and other significant features.
(8) Other conditions on adjacent land. Approximate direction and gradient of ground slope, including any embankments or retaining walls; character and location of buildings, railroads, power lines, towers and other nearby nonresidential land uses or adverse influences; owners of adjacent unplatted land; for abutting platted land, refer to subdivision plat by name, recording date and number; and show approximate percent buildup, typical lot size and dwelling type.
(9) Zoning. On and adjacent to the tract.
(10) Proposed public improvements. highways or other major improvements planned by public authorities for future construction on or near tract.
(11) Key plan. Showing location of the tract.
(12) Photographs. Of the tract, at the request of the planning and zoning board.
(13) Title and certificates. Present tract designation according to official records in office of appropriate recorder; title under which proposed subdivision is to be recorded with names and addresses of owners; notation stating acreage, scale, north arrow, datum, benchmarks, certification of registered civil engineer or surveyor, date of survey.