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Section 1207.01    Maximum Impervious Surface

  1. Maximum Impervious Surface Coverage
    1. Single-Family Residential Uses. The maximum impervious surface coverage
      for an individual single-family detached use within Zoning Districts 1, 2, 3,
      or 10 shall not exceed 40% of the total gross area of the underlying lot or
      lots.

    2. All Other Residential Uses. The maximum impervious surface coverage for
      an individual single-family use within Zoning District 4 or within an Open
      Space Conservation Subdivision, and all other types of residential uses (e.g.,
      townhomes, multi-family), including parking areas and accessory buildings
      and structures, shall not exceed 60% of the total gross area of the underlying
      lot or lots.

    3. Planned Developments. The maximum impervious surface coverage,
      including parking areas and accessory buildings and structures, shall be
      determined on a case-by-case basis based on the criteria set forth in
      subsection (b) below.

    4. All Other Non-Residential Uses. The maximum impervious surface
      coverage for commercial, industrial, and institutional uses shall be
      determined on a case-by-case basis based on the criteria set forth in
      subsection (b) below, but in no case shall the maximum impervious surface
      coverage exceed 60% of the total gross area of the underlying lot or lots.

  2. Criteria for Establishing Impervious Site Coverage and Limits of Disturbance
    In establishing maximum impervious surface and limits of disturbance, the
    following criteria and standards shall be considered and applied:
    1. Minimize visual impacts from the development, including but not limited to
      screening from adjacent properties and protection of scenic views.

    2. Preservation of significant trees or vegetation.
      [See Section 1207.02, "Tree and Vegetation Protection."]

    3. Erosion prevention and control, including but not limited to protection of
      steep slopes and natural drainage channels.
      [See Section 1207.02, "Tree and Vegetation Protection;" Section 1207.03,
      "Wetland/Stream Corridor Protection;" and Section 1207.07, "Stormwater
      Management/Drainage/Erosion Control."]

    4. Protection of aquifer recharge areas, and in particular areas lying within the
      one-mile and five-mile time of travel limits for the City of Hudson's
      designated Wellhead Protection Area.
      [See Section 1207.08, "Wellhead Protection Area Standards."]

    5. Stream corridor and wetland protection and buffering.
      [See Section 1207.03, "Stream Corridor and Wetlands Protection."]

    6. Preservation of existing levels of ecological integrity as shown on any of the
      individual metrics or the undeveloped IEI composite set forth in Appendix B
      to this Code.

  3. Limits of Disturbance--Development Standards and Guidelines
    1. Construction Activity Inside the Limits of Disturbance:
      1. All construction activity, including, without limitation, grading,
        excavation, or stockpiling of fill material shall be contained within
        the approved limits of disturbance.
      2. No construction activity shall be permitted within the limits of
        disturbance, whether to provide for a building site, on-site utilities or
        services, or for any roads or driveways, prior to the approval of any
        required erosion and sedimentation control plan for the development.

    2. Land Disturbing Activities Outside the Limits of Disturbance. Land
      disturbance activity may occur outside the limits of disturbance for the
      following limited purposes:
      1. Restoration of previously disturbed or degraded areas.
      2. Utility installations and emergency public safety activities when such
        activities and installations cannot reasonably be contained within the
        Limits of Disturbance or other nearby developed areas.
      3. Construction of a multi-purpose trail that will provide public access
        for recreational purposes when such trail cannot reasonably be
        contained within the Limits of Disturbance or other nearby developed
        areas.
      4. Enhancement of the habitat values and/or other natural resource
        values of an identified natural area.
      5. Landscaping, including vegetation clearing, planting of lawns, and
        tree removal may occur in the areas outside the limits of disturbance,
        except that trees with a diameter at breast height (DBH) of 9 inches
        or more shall not be removed, except as provided in Section 1207.02.
      6. Bufferyards. Areas along the perimeter of a lot that are outside the
        established limits of disturbance may be disturbed to establish a
        bufferyard as required by Section 1207.04 of this Chapter.

    3. Standards For Protection During Construction:
      1. Designation and Fencing. Approved Limits of Disturbance shall be
        shown on the final site plan or subdivision plan. Limits of
        Disturbance shall be designated in the field prior to commencement
        of excavation, grading, or construction with fencing or other methods
        approved by the City Manager. For the protection of trees and
        clumps of trees to be preserved, see the tree protection specifications
        in Section 1207.02(d) below.