Town of Wilton, NH

Stormwater Management Regulations

6.0 Stormwater Application Requirements

Except as set forth in Section 6.0.10, the Planning Board shall review, consider and act on a Stormwater Application on the timeline set forth for review, consideration and action upon Site Plans in Section D – Site Plan Review Regulations, of the Wilton Land Use Laws and Regulations, as it may from time to time be amended or modified. The Planning Board shall not accept a Stormwater Application for consideration or approval, and it shall not be considered complete, unless the Planning Board, in consultation with the Stormwater Manager, determines that it contains or is accompanied by all of the following (other than those requirements waived by the Planning Board pursuant to Section 11.0):

  1. Stormwater Application Form. The application form (including the review checklist) attached to this Stormwater Regulations Section, as it may from time to time be amended or modified, completed and signed by the Responsible Parties, together with all fees and other payments authorized by Section 14.0, Fees and Penalties.
  2. Site drawing. Six (6) copies of a graphic depiction of both existing and proposed conditions, including:
    1. Locus map with property boundaries;
    2. North arrow; scale; date;
    3. Address of property; names and addresses of Responsible Parties;
    4. Topographic contours at two (2)-foot intervals;
    5. Locations of structures, driveways, roads, utilities, snow storage areas, earth stockpiles and equipment storage areas;
    6. Vegetation, including types and areas of coverage;
    7. Impervious Surfaces, including calculation of total square footage thereof;
    8. Zoning district and overlay boundaries, and, as applicable, 100-year flood plain and wetland, watershed or other setback and buffer boundaries;
    9. Critical Area boundaries;
    10. Locations of surface waters (of any size) on site and otherwise within 200 feet of (i) existing manmade features or (ii) any proposed Construction Activity;
    11. Soil information derived from a National Cooperative Soil Survey (NCSS) soil series map or a High Intensity Soil Map of the site, prepared in accordance with SSSNNE Special Publication No. 1, with areas of poorly drained, very poorly drained, and highly erodible soils highlighted;
    12. All Easements, including, without limitation, those required for inspection, maintenance and repair of the SMS;
    13. Areas proposed to be disturbed, including calculation of the Disturbed Area;
    14. Areas of cut and fill, including calculations of the separate total volumes to be (i) cut (or removed) and (ii) filled; existing and proposed elevations; and with areas of poorly and/or very poorly drained soils proposed to be filled highlighted;
    15. The drainage areas that will be affected by Construction Activities;
    16. Arrows showing the direction of flow of pre- and post-construction Stormwater Runoff;
    17. Locations, elevations and size of all elements of the Stormwater Management System(s) detailed in the Stormwater Management Plan, with reference to where they are described therein;
    18. A list of the BMPs considered and to be followed in connection with the Construction Activities; and
    19. Any other features or information reasonably requested by the Planning Board or the Stormwater Manager.
  3. Other Permits. Copies of all Federal, State and local permits and approvals required in connection with the proposed Construction Activities, or a list and undertaking to obtain them before any related Construction Activities begin.
  4. Schedules. Schedules for each Construction Activity.
  5. Stormwater Management Plan. Six (6) copies of the Stormwater Management Plan, as set forth in Section 7.0, including the information with respect to the Stormwater Management System(s) required by Section 8.0.
  6. Maintenance Agreement. The proposed Maintenance Agreement, as described in Section 10.0.
  7. Other Information. Any other information reasonably requested by the Planning Board or the Stormwater Manager.
  8. Additional Studies or Review. Before determining to accept a Stormwater Application for consideration or take any action with respect thereto, the Planning Board may in its discretion (1) schedule a site walk, (2) require the applicant to provide additional information, including further studies, and to revise the application accordingly, and/or (3) require professional review of information submitted by the applicant, in each case, at the Responsible Parties’ expense. The Planning Board may require the applicant to establish an escrow for the payment of any such professional review, as set forth in Section 14.0. Information or other materials requested by the Board shall be submitted for review at least nine days before the public hearing at or to which consideration of the Stormwater Application has been scheduled or continued. Failure to timely submit materials shall result in postponement of the public hearing.
  9. Professional Seal. The site drawings and the Stormwater Management Plan shall bear the signature(s) and seal(s) of the engineer(s), licensed by the State of New Hampshire, who prepared them.
  10. Stormwater Application in Connection with Other Applications. If a proposed project requires both a Stormwater Application and one or more applications to the Planning Board for approval of a subdivision, excavation, site plan or other proposed development or use, all such applications shall be submitted together, and reviewed, considered and acted upon on the timeline then set forth in such other applicable regulation, and neither the Stormwater Application nor any other such application shall be considered complete until the information required for all such applications is included in the submission. Notwithstanding any overlapping requirements with other such applications, a Stormwater Application shall nevertheless contain all of the information required by these regulations.
  11. Waivers. A list of the waivers of any of the requirements of these regulations requested of the Planning Board, supported by explanations, meeting the requirements of Section 11.0.