--- title: Duluth UDC § 1116.04 — Duluth jurisdiction: duluth governing_jurisdiction: Duluth source_url: "https://www.duluthga.net/UDC_ADOPTED_9.8.2025_Amended_7-13-26.pdf" effective_date: "2026-07-13" as_of: "2026-08-13" canonical: "https://www.gwindex.net/code/duluth/1116.04" licence: "CC0-1.0" --- # Duluth UDC § 1116.04 Other Plans Required **Governing jurisdiction: Duluth.** A "Duluth, GA" mailing address is usually NOT in the City of Duluth. Unincorporated Gwinnett is 67.3% of the county's land area and is governed by a different code, a different board and a different permit portal. Resolve the governing jurisdiction before answering any zoning question. - **Article:** 11 — Procedures and Permits - **Pages in source:** 325–327 - **Adopted:** 2025-09-08 - **Amended through:** 2026-07-13 - **Source:** https://www.duluthga.net/UDC_ADOPTED_9.8.2025_Amended_7-13-26.pdf ## Text The Site Plan shall be accompanied by other Development Plans showing the following information when same is not shown on, or evident from the Site Plan. The various plans may be combined where appropriate and clarity can be maintained. 1. 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. 324 | P a g e Article Eleven. Procedures and Permits 2. Grading Plan prepared in accordance with the requirements of this Development Code, if applicable. 3. Stormwater Drainage Construction Data: a. Location and size of all proposed drainage improvements, and drainage easements to be located outside street right-of-way lines. b. Profiles of all storm drainage pipe and slope of receiving channels. Hydraulic grade lines shall be shown for all pipes (except roof drains) for the required design flow. On storm drainage profiles a pipe chart will be shown which will include pipe number, pipe size, pipe material, pipe slope, pipe length, contributing drainage area, design flow, storm frequency, runoff coefficient and velocity. On all pipes, the hydraulic grade line shall be shown. Profiles of all open channels and ditches including the design flow 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 runoff coefficient, and velocity for the required design flow. c. Acreage of drainage areas and hydrological study used in determining size of structures, including maps of all contributing drainage basins and acreages. 4. Sewage Disposal Plans, as follows: a. Sanitary Sewer Plans, including profiles and other information as may be required by Gwinnett County Water Resources. b. For projects proposed to be served by on-site sewage disposal systems, the Gwinnett County Health Department must be consulted. 5. Street Widening and Construction Data: a. Centerline profiles and typical roadway sections of all proposed street improvements. Profiles (and plans, where required) shall be drawn on standard plan and profile sheets with plan sections showing street layout, pavement and right-of-way width, curvature, and required drainage facilities. b. Where sanitary or storm sewers are to be installed within a street, the grade, size, location and invert elevations of manholes shall be indicated on the road profile. c. 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 continuity consistent with the standards of these Regulations, but no less than 200 feet. d. All elevations shall be coordinated and sited 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. 6. 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. 7. Private Water System Plans, if any, indicating proposed water main size and location, with fire hydrants, on the site. The distance and direction to all other fire hydrants within 500 feet of the site or buildings along existing streets or other access drives shall also be indicated. 8. Street striping plan, showing striping in accordance with the Manual on Uniform Traffic Control Devices, for any street to be widened to three or more lanes. 9. Landscape Plan: a. A complete tree survey and inventory, as described in Section 1112.03. b. An integrated site plan showing Specimen Trees, the trees to be saved and those to be removed, utilities to be installed, grading, the approximate location of all structures, driveways and curb cuts and proposed tree plantings and other landscaping. c. A detailed plan to protect and preserve trees before, during and in perpetuity after construction, which plan shall contain the following information: 325 | P a g e Article Eleven. Procedures and Permits i. All items found on the Erosion, Sedimentation and Pollution Control Submittal checklist pertinent to normal plan review. ii. Site area (roads, utility lines, detention ponds, etc.) iii. The locations of existing and proposed structures, paving, driveways, cut and fill area, detention areas, etc. iv. Phase lines or limits of construction. v. A delineation of all protected zones with any required dimensions. vi. Calculations showing compliance with the required canopy coverage using existing trees, and/or replacement trees vii. Location of all existing and proposed utility lines or easements. viii. Locations of any boring sites for underground utilities. ix. Location of all Specimen Trees and indications whether they are to be removed or preserved. x. Locations of all tree protection devices, materials to be used in each location and details. xi. A delineation of a Tree Save Area in which trees have been inventoried for canopy coverage calculations. xii. If applicable, locations and details of all permanent tree protection measures (tree wells, aeration system, permeable paving, retaining walls, bollards, etc.; and xiii. All proposed plantings per Article 7. xiv. Additional information as required on a case-by-case basis. (The above items may be integrated into the normal application requirements and submittal.) Minor changes to existing development require only a sketch showing changes to be submitted to the Planning and Development Director for review and approval.