Duluth UDC § 1115.02

1. Certified Boundary Survey. 313 | P a g e Article Eleven. Procedures and Permits a. The Preliminary Plat shall be based on a certified boundary survey of the entire property contained within the Preliminary Plat, and it shall be tied to a point of reference (tie point) with the same degree of accuracy as the boundary survey itself. b. The survey shall have an accuracy of no less than 1 in 10,000 and shall meet all requirements of Georgia Law regarding the recording of maps and plats. c. Each Preliminary Plat shall be drawn on, accompanied by, or referenced to a boundary survey meeting the minimum requirements of the preceding paragraph. 2. The Preliminary Plat shall contain the following: a. Proposed name of subdivision. b. Name, address, and telephone numbers of both the owner of record and the subdivider. c. Names, addresses, and telephone numbers of each professional firm associated with the development planning (i.e., engineer, architect, etc.). d. Date of survey, north point, and graphic scale, source of vertical datum, date of plat drawing, and space for revision dates. e. Proposed use of the site, such as single-family residences, duplexes, townhouses, office park, industrial subdivision, etc. For residential subdivisions, indicate the total number of dwelling units within plat. f. Location (Land District and Land Lot), acreage, and density, if applicable. g. Location sketch showing the subdivision in relation to the surrounding area with regard to well- known landmarks such as major streets, rivers and railroads. Sketches may be drawn freehand and at a scale sufficient to clearly show the information required but not less than one inch equal to 2,000 feet. U.S. Geological Survey Maps may be used as a reference guide for the location sketch. h. Name of former subdivision, if any, and all of the land in the Preliminary Plat which has previously been subdivided, showing boundaries of same. i. Boundary lines of the tract shall be indicated by a heavy line giving lengths in feet and hundredths of a foot, bearings in degrees, minutes and seconds, and the bearing and distance to designated tie point. j. Directional flow arrows for street drainage and individual lot drainage when finished grading of lots is not shown. k. Contour lines based on sea level datum, or other datum acceptable to the Department. These shall be drawn at intervals of not more than two feet. Contour lines shall be based on field surveys or photogrammetric methods from aerial photographs. The basis for the topographic contour shown shall be specified and dated. l. Natural features within the proposed subdivision, including drainage channels, bodies of water, and other known significant features such as extensive exposed rock. On all watercourses leaving the tract, the direction of flow shall be indicated. The 100-year floodplain shall be outlined, and the source of the depicted floodplain shall be indicated. For those lots containing floodplain, a Floodplain Lot Chart shall be provided showing the area (in square feet) of each lot lying inside and outside of the floodplain as though the land disturbance activity were completed. m. Man-made and cultural features existing within and adjacent to the proposed subdivision, including existing rights-of-way measured from centerline, pavements widths, names of existing and platted streets; all easements, city, and County jurisdiction lines; existing structures on the site and their proposed disposition, Chattahoochee River Corridor information and limits of Chattahoochee River Tributary Protection Area (if applicable), and other significant information. Location and dimensions of existing bridges; water, sewer lines and other existing utility lines, culverts and other existing features should be indicated. 314 | P a g e Article Eleven. Procedures and Permits n. Proposed layout including lot lines, lot numbers and block letters, proposed streets with roadway and right-of-way lines and names, sites reserved through covenants, easements, dedications, or otherwise for public uses. Lots shall be numbered in numerical order and blocks lettered alphabetically. The minimum building setback lines from all streets shall be shown. Streets (including cul-de-sacs) shall be dimensioned to show rights-of-way and roadway widths, central angles, and intersection radii. Centerline curve data shall be provided for roadway curves [radius, length, amount of superelevation (if any), point of curvature (P.C.), point of tangency (P.T.), etc.] if not shown separately on construction drawings. o. Identify unit number, division, or phase of development, if any, proposed by the subdivider. p. Existing zoning of the property, rezoning and variance case numbers, dates of approval and conditions (as applicable) shall be shown. Note minimum lot size, minimum yard setback requirements and other applicable zoning requirements. Show and dimension any required buffers, landscape strips, No-access easements, etc. Note any approved waivers from these Regulations. q. Show all adjoining property owners, subdivision names, lot numbers and lot lines, block letters, and zoning. r. Location of all known existing or previously existing landfills. s. Proposed recreation area sites, if any; land area of the site, area and percent of site within the 100-year floodplain, proposed disposition of the site (public ownership, homeowner’s association, etc.). t. Such additional information as may be reasonably required to permit adequate evaluation of the subdivision. u. Street lighting design which conforms to The American National Standard Practice for Roadway Lighting. v. Statement of Approval. Each Preliminary Plat shall carry the following certificate printed or stamped thereon: All requirements of the Development Regulations of the City of Duluth relative to the preparation and submission of a subdivision development permit application having been fulfilled and said application and all supporting plans and data having been reviewed and approved by all affected governmental jurisdictions, agencies and departments under their applicable regulations, approval is hereby granted, on this Preliminary Plat and all other Development Plans associated with this subdivision, subject to all further provisions of said Development Regulations and other City existing Regulations. ___________________________________________ _________________ Director, Department of Planning and Development Date THIS APPROVAL EXPIRES TWELVE MONTHS FROM THE DATE OF APPROVAL UNLESS A DEVELOPMENT PERMIT IS ISSUED. NOTE: The boundaries of the lots shown on this Plat have not been surveyed. This Plat is not for recording. 3. The Preliminary Plat shall be accompanied by other Development Plans showing the following information when such information is not shown on or evident from the Preliminary Plat. The various plans may be combined where appropriate and clarity can be maintained. a. An Erosion Control Plan prepared in accordance with the requirements of the Soil Erosion, Sedimentation and Pollution Control Division of Article 10. Erosion control measures may be shown on the Grading Plan, if desired. 315 | P a g e Article Eleven. Procedures and Permits b. Grading Plans prepared in accordance with the requirements of this Development Code if grading is proposed beyond the street rights-of-way. c. Stormwater Drainage Construction Data: i. Location and size of all proposed drainage structures including detention ponds, catch basins, grates, headwalls, pipes and any extensions thereof, energy dissipators, improved channels, and all proposed drainage easements to be located outside street rights-of- way lines. ii. Profiles of all storm drainage pipes and the slope of receiving channels. On storm drainage profiles, a pipe chart will be shown which includes pipe numbers, pipe sizes, pipe materials, pipe slopes, pipe length, contributing drainage area, design flow, design storm frequency, runoff coefficient and velocity. The hydraulic grade line will be shown on all pipes for the required design flow. The hydraulic grade line will be shown for all pipes located in the public rights-of-way for the design flow. iii. Profiles of all open channels and ditches including Mannings' 25-year storm normal depth and velocity. On storm drainage profiles an open channel chart will be shown which will include open channel numbers, conveyance size, lining material, length, channel slope, contributing drainage area, design storm frequency, runoff coefficient and velocity. iv. Hydrological study used in determining size of structures, including a map of all contributing drainage basins and acreages. d. If sanitary sewers are required by Gwinnett County Department of Water Resources, Sanitary Sewer Plans, including the location and size of all proposed sewer lines, manholes, easements required therefore, and sufficient dimensions to locate same on the ground. e. Construction Data for New Streets and Street Widenings: i. Centerline profiles and typical roadway sections of all proposed streets and street widenings. ii. Where sanitary or storm sewers are to be installed within a street, the grade; size, location and bedding class of pipe; location and invert elevation of manholes shall be indicated on the road profile. iii. Profiles covering roadways that are extensions of existing roadways shall include elevations at 50-foot intervals for such distance as may be adequate to provide for continuity consistent with the standards required by these Regulations for street improvements but not less than 200 feet. iv. All elevations shall be coordinated and tied into U.S. Coast and Geodetic Survey or Department of Transportation benchmarks where feasible, or into reference monuments established by the Federal Emergency Management Agency. v. Stub streets shall be profiled at least 200 feet onto the adjoining property (no tree cutting). f. Buffer and Landscape Plan, if any such areas exist within the subdivision, prepared in accordance with the requirements of Article 7 and specification of these Regulations. g. Tree Protection Plan (if required). h. Floodplain Management Plans. If any floodplain areas are located on the property, such data as is required by the Floodplain Management provisions of Article 8 shall be submitted. i. Encroachments. Where construction is proposed on adjacent property, an encroachment agreement or easement shall be submitted to the Department. 316 | P a g e Article Eleven. Procedures and Permits