Groundwater Mounding Analysis as outlined in the NJDEP BMP Manual, Chapter 13, in order to assess the hydraulic impact on the groundwater table and design the site so as to avoid adverse hydraulic impacts. Potential adverse hydraulic impacts include, but are not limited to, exacerbating a naturally or seasonally high water table, so as to cause surficial ponding, flooding of basements, or interference with the proper operation of subsurface sewage disposal systems or other subsurface structures within the zone of influence of the groundwater mound, or interference with the proper functioning of the stormwater management measure itself.

E. Additional Requirements.

  • All such non-major development shall be subject to review by the Township Engineer (or Board Engineer, where applicable) to determine that stormwater runoff created by the development is adequately controlled and does not cause an adverse impact on adjoining properties.
  • All such “Mixed Use” non-major development, consisting of both residential and non-residential development on the same lot, shall be subject to the requirements set forth in §244-209.2D, Stormwater management requirements for Non-Residential Non-Major Development.
  • For the purpose of sizing drywells and underground small-scale infiltration basins, clean stone has an acceptable void ratio of 0.30.
  • For the sizing of drywells, infiltration shall not be accounted for in the sizing of the required storage volume.
  • Soil Testing shall be performed to confirm the permeability of the soils and the depth of the water table and seasonal high-water table.
  • DASTI, McGUCKIN, McNICHOLS, CONNORS, ANTHONY & BUCKLEY
  • A minimum of 2 ft. of separation is required from the bottom of all drywells to seasonal high-water table.
  • The design of all BMPs shall adhere to the guidelines set forth in Chapter 13 of the NJDEP BMP Manual, unless specifically modified herein.

COUNSELLORS AT LAW

620 WEST LACEY ROAD FORKED RIVER, N.J. 08731 Groundwater Mounding Analysis as outlined in the NJDEP BMP Manual, Chapter 13, in order to assess the hydraulic impact on the groundwater table and design the site so as to avoid adverse hydraulic impacts. Potential adverse hydraulic impacts include, but are not limited to, exacerbating a naturally or seasonally high water table, so as to cause surficial ponding, flooding of basements, or interference with the proper operation of subsurface sewage disposal systems or other subsurface structures within the zone of influence of the groundwater mound, or interference with the proper functioning of the stormwater management measure itself.

F. Exceptions.

  • For any non-major development located on a lot created as part of a Major Site Plan and/or Major Subdivision approved by the Planning or Zoning Board on or after February 2, 2004, where adequate stormwater management BMPs meeting NJAC 7:8 have been provided and approved, the requirements of §244-209.2 do not apply. This exemption is void if:
  • The proposed development exceeds the permitted impervious coverage for the property's zoning district.
  • If the subject lot has been further subdivided and/or consolidated with other properties.
  • If any new net impervious cover is graded in a manner that stormwater runoff bypasses the previously approved stormwater management BMPs for the development and/or is graded in a manner that it will negatively impact adjacent properties, subject to review by the Township Engineer (or Board Engineer, where applicable).

G. Variances.

  • A variance from strict compliance with the requirements of this section may be granted by the reviewing board for those projects where an applicant has demonstrated the inability or impracticability of strict compliance with the stormwater management requirements in this section.
  • In those cases where a non-major development does not require approval of the Planning Board or Zoning Board, but a building permit is required, any party