Plan submittals shall be in accordance with the current checklists for plan submittal that are on file with the Village Clerk. All plans and plats shall be submitted under the signature and seal of the appropriate licensed professional. Improvement plans shall be clearly marked "Not for Construction" until such time as all approvals have been granted and applicable permits have been issued.
A. In general, the following requirements shall apply to all engineering plan submittals:
1. Plan sheet size shall be 22" x 34" or 24" x 36".
2. Minimum plan scale shall be 1" = 50', except for general or overall reference sheets.
3. The Village topographic datum is NGVD 1988. Plans with any other datum or with conversion factors will not be accepted.
4. All design information shall be presented clearly and completely to the satisfaction of the Village Engineer. Pre- design meetings are encouraged to review specific subdivision design concerns and to minimize design time, review time and revisions.
B. All engineering plans shall include, but not be limited to, the following:
1. Cover Sheet containing plan title, engineer's certification, sheet index, bench mark information (including at least 2 on-site elevation reference marks), JULIE note and site location map.
2. General Notes, Legends, Estimated Quantities and Specifications Sheet(s) which shall reference these Village of Sugar Grove Standard Specifications for Improvements in the heading paragraph. No general notes or specifications typically utilized by the design engineering firm which conflict with these Standard Specifications for Improvements, or any specifications referenced herein, will be allowed. An estimated quantities table shall be provided for all work proposed by the plan set.
3. Geometric Plan or Final Plat of Subdivision shall be included in the plan set indicating all geometric information for subdivision boundary, streets, lots and open space. Street names and lots numbers are required.
4. Overall Utility Plan with all structures (i.e., manholes, catch basins, inlets, valve vaults, fire hydrants, street lights) numbered, lettered or otherwise labeled. All water, sanitary sewer and storm sewer mains shall be shown on this sheet with pipe sizes indicated.
5. Grading and Drainage Plan showing existing and proposed contour lines, one foot (1') interval, for all areas being developed. High points and low points of all roads shall be shown with centerline elevations at one hundred foot (100') intervals. Spot elevations shall be shown for all lot corners, tops of curb opposite front lot corners, all peaks and all low points with the rim elevations of yard inlet structures. Minimum top of foundation elevations shall be provided with a standard note regarding the relationship between top of foundation and garage floor. Lookout and walkout basements shall be indicated with minimum top of foundation elevations and the general location of foundation steps. Retaining walls will not be allowed for side yard grade transitions between lots. Lots shall be made wider or houses shall be custom designed such that the grade transitions are accomplished on individual lots with stepped foundations, lookout basements or dropped siding. Overflow routes for stormwater conveyance shall be clearly shown and cross sections with flow calculations and high water levels shall be provided. A storm sewer design report with map showing areas tributary to all inlets is required. Time of concentration calculations and composite runoff coefficient calculations are required.
6. Erosion and Sedimentation Control Plan, incorporating all design elements required by these Standard Specifications for Improvements and all requirements of the Illinois Urban Manual, the Kane County stormwater ordinance and the Kane-DuPage Soil and Water Conservation District. Topsoil stockpile areas shall be shown. It shall be clearly noted that all areas of the subdivision to be vegetated shall be respread with a minimum of six inches (6") of quality topsoil. Borrow pits will not be filled with topsoil and topsoil will not be transported out of the Village corporate boundary without written approval of the Village Engineer or the Village Board. This section of the plan set shall include a Stormwater Pollution Prevention Plan (SWPPP) in accordance with IEPA NPDES phase II permitting requirements.
7. Plan and Profile Sheets shall be provided for all roads and for all easements containing water, sewer and storm sewer mains. Easements, a minimum of ten feet (10') beyond the centerline of such mains (wider if necessary depending on the depth and size of the utility and soil conditions), shall be indicated on the engineering plans and coordinated with the final plat of subdivision. Rim and invert elevations for all pipes and all sanitary and storm structures shall be shown in plan view. Sanitary sewer manhole rims and inverts shall be shown in plan and profile. Sanitary sewer services shall be shown in plan view and in profile where they cross all water mains and where they cross any other utility with a potential elevation conflict. All risers shall be indicated, and all stub elevations shall be provided demonstrating that the sewer service can enter the residence at least two feet (2') below the basement floor. Valve vault rims and top of water main elevations shall be shown. Fire hydrants shall be shown with finish grade elevations. Water service lines and curb box locations and finish grade elevations shall be shown. Use of a table presenting all service data is preferred. All lot numbers and street names shall be shown in the plan view. Pipeline lengths, sizes, types and slopes shall be shown in plan and profile views. 1" = 5' is the preferred vertical scale for all profile drawings. Water main shall be shown in profile as it will actually be laid. Fittings will not be allowed for vertical deflections at elevation conflicts. Ninety degree (90°) bends are not allowed on the water main. Cross sections at one hundred foot (100') intervals shall be provided for all rural type roadways that do not utilize curb and gutter.
8. Intersection Details at a scale of 1" = 10' shall be provided for all street intersections. All utilities shall be shown (with outside diameter of pipes and manholes to scale). Curb slopes and top of curb elevations, with stations at all curb return points of curvature, shall be shown. High points and curb return midpoint elevations shall be provided. Curb depression and spot elevations shall be indicated for all sidewalk and multi-use path ramps demonstrating compliance with accessibility standards. Street names and adjacent lot numbers shall also be provided.
9. Street Lighting, Traffic Control, Signage and Striping Plan, showing all street lights, street light wiring, traffic control devices, all traffic control signs and all striping as required for lanes, stop signs, parking, shared use paths and crosswalks.
10. Village of Sugar Grove Standard Notes and Detail Sheets, in their entirety, which will be provided by the Village Engineer in PDF format. Those details on any particular sheet which do not apply to a particular subdivision or plan set shall be crossed out. These standard notes and detail sheets are on file in the Village. In the event there is a conflict between the text specifications outlined in this title and the details and notes provided in the Standard Notes and Detail Sheets, the conflict shall be brought to the attention of the Village Engineer. The more restrictive requirement shall govern unless otherwise specified by the Village Engineer. (Ord. 2018-02-20, 2-20-2018)