STORMWATER MANAGEMENT PLAN CHECKLIST (1) The applicant shall submit (x) copies of the Narrative Description and five (5) copies of all plans. Plans shall be a minimum of 8.5" x 11" and a maximum of 18" x 24" at a scale of 1" = 40' with a sufficient number of sheets to clearly show all of the information required. Sheets shall be numbered sequentially (e.g. sheet 1 of 3, etc.) For projects involving a Subdivision, Land Development Project, or Development Plan Review, an additional seven (7) reduced copies of the plan shall be submitted (minimum size of 8.5" X 11"; maximum size of 11" X 17"). (2) Plans shall conform to the Procedural & Technical Standards For the Practice of Land Surveying in the State of Rhode Island and Providence Plantations, as prepared by the RI Society of Professional Land Surveyors, Inc, as amended. (3)All plans must include: • Name and address of property owner or applicant • Date plan was prepared, and revision and of preparer dates (if any) • Vicinity or Locus Map & Aerial photography • Signature Block • Graphic Scale (1"=40' or larger) & North Arrow • Legend showing all symbols • Assessor's Plat & Lot numbers & Zoning district(s) • Perimeter boundary lines of subject property | |
NARRATIVE DESCRIPTION | Initial &date (staff) |
Project Description Brief description of the nature and purpose of the land disturbing activity and the amount of grading involved (acreage or square footage of disturbance | |
Existing Site Conditions A description of the existing soils, topography, vegetation, and drainage | |
Adjacent Areas Description of the watershed the site is within, and adjacent areas which might be affected by the land disturbance | |
Critical Area Description of areas on or adjacent to the site, which may be seriously impacted by the development | |
Erosion and Sediment Control Measures/Construction Site Runoff Control A description of the methods which will be used to control erosion and sedimentation on the site before, during, and after construction. Reference 1990 RI SEICSC Handbook (available through RI RC&D 885-1321; can refer to proposed SWMPP) | |
Stormwater Management Guidelines Compute pre-and post-development runoff discharges using "TR 55" method | |
Adherence to Stormwater Management Regulations Design necessary permanent and temporary stormwater management specifications, including control structures to minimize sediment transport and flooding. Evaluate the final off-site destination of the runoff. | |
Computations Include all supporting computations, in an orderly manner, for hydrology and design structures, including all "TR 55" and other accepted methodology worksheets and computer printouts (CN number, time of concentration, storage volumes, hydrographs, etc.) | |
Maintenance Include schedules of regular inspection, operation and maintenance, and authority delegations. | |
Review Process Include a listing of all agencies currently reviewing the project and the status of these reviews. | |
Water Quality Impacts Discuss possible pollutant sources; evaluate the impact on any water body, including groundwater aquifers, intermittent and perennial streams, ponds and wetlands; and discuss any possible measures to be used in reducing, mitigating this impact. | |
Soils If stormwater management control measures depend on the hydrologic properties of soils, a soils report based on onsite boring logs or testhole data | |
SITE PLAN | Initial &date (staff) |
Topography Existing and proposed contours (2' minimum) | |
Soils Boundaries of different soil types within the watershed, including delineation of the site. (Copies of soil survey sheets with boundaries and roadways drawn on the map are sufficient). | |
Watershed Patterns Delineate the watershed sub areas and indicate all water course flow directions including pre-and post-development conditions. Delineate all flow "TR 55", ID segments on the plan. | |
Wetlands The delineation, if applicable, of the 100-year floodplain and any on site wetlands. | |
Limits of Clearing and Grading Outline areas to be cleared and graded | |
Phasing If a project is to be phased, delineate limits of each phase (including temporary grading) | |
Location of Practices The location of the erosion and sediment control and stormwater management practices used on the site, included within a legend, where appropriate. | |
Improvements Any existing or proposed improvements, including location of buildings or other structures, impervious surfaces, storm drainage facilities, and all grading. | |
Easements & rights-of-way Existing and/or proposed | |
CONSTRUCTION DRAWINGS | |
Details Structural and construction details for all components of the proposed drainage system or systems, and stormwater management facilities | |
Specifications All necessary construction specifications | |
Erosion and Sediment Control Erosion and sediment control measures to be implemented in all construction phases along with final site stabilization plans | |
Area of Disturbance Limits of clearing and overall site disturbance | |
Data Data for total site area, disturbed area, new impervious area, and total impervious area | |
Planting Materials A table of materials to be used for stormwater management facility planting | |
Certification Certification, by the owner/developer, that all stormwater management construction will be done according to this plan | |
As-Built An as-built certification signature block to be executed after project completion | |
Maintenance Plan Detailed maintenance and repair procedures to ensure continued function of stormwater management facilities | |