[Ord. #2526, 7-11-2023, adopted]
a. The site plan or construction documents
for any development subject to the requirements of these regulations
shall be drawn to scale and shall include, as applicable to the proposed
development:
1. Delineation of flood hazard areas, floodway
boundaries and flood zone(s), base flood elevation(s), and ground
elevations when necessary for review of the proposed development.
For buildings that are located in more than one flood hazard area,
the elevation and provisions associated with the most restrictive
flood hazard area shall apply.
2. Where base flood elevations or floodway data are not included on the FIRM or in the Flood Insurance Study, they shall be established in accordance with §
25-5.2.
3. Where the parcel on which the proposed
development will take place will have more than 50 lots or is larger
than five acres and base flood elevations are not included on the
FIRM or in the Flood Insurance Study, such elevations shall be established
in accordance with § 25-5.2.a3 of these regulations.
4. Location of the proposed activity and proposed
structures, and locations of existing buildings and structures; in
coastal high hazard areas and Coastal A Zones, new buildings shall
be located landward of the reach of mean high tide.
5. Location, extent, amount, and proposed
final grades of any filling, grading, or excavation.
6. Where the placement of fill is proposed,
the amount, type, and source of fill material; compaction specifications;
a description of the intended purpose of the fill areas; and evidence
that the proposed fill areas are the minimum necessary to achieve
the intended purpose. The applicant shall provide an engineering certification
confirming that the proposal meets the flood storage displacement
limitations of N.J.A.C. 7:13.
7. Extent of any proposed alteration of sand
dunes.
8. Existing and proposed alignment of any
proposed alteration of a watercourse.
9. Floodproofing certifications, V Zone and
breakaway wall certifications, operations and maintenance plans, warning
and evacuation plans and other documentation required pursuant to
FEMA publications.
b. The Floodplain Administrator is authorized
to waive the submission of site plans, construction documents, and
other data that are required by these regulations but that are not
required to be prepared by a registered design professional when it
is found that the nature of the proposed development is such that
the review of such submissions is not necessary to ascertain compliance.
[Ord. #2526, 7-11-2023, adopted]
a. Where flood hazard areas are delineated
on the effective or preliminary FIRM and base flood elevation data
have not been provided, the applicant shall consult with the Floodplain
Administrator to determine whether to:
1. Use the approximation method (Method 5)
described in N.J.A.C. 7:13 in conjunction with Appendix 1 of the FHACA
to determine the required flood elevation.
2. Obtain, review, and reasonably utilize
data available from a federal, state or other source when those data
are deemed acceptable to the Floodplain Administrator to reasonably
reflect flooding conditions.
3. Determine the base flood elevation in accordance
with accepted hydrologic and hydraulic engineering techniques according
to Method 6 as described in N.J.A.C. 7:13. Such analyses shall be
performed and sealed by a licensed professional engineer.
b. Studies, analyses, and computations shall
be submitted in sufficient detail to allow review and approval by
the Floodplain Administrator prior to floodplain development permit
issuance. The accuracy of data submitted for such determination shall
be the responsibility of the applicant. Where the data are to be used
to support a letter of map change (LOMC) from FEMA, the applicant
shall be responsible for satisfying the submittal requirements and
paying the processing fees.
[Ord. #2526, 7-11-2023, adopted]
As applicable to the location and
nature of the proposed development activity, and in addition to the
requirements of this section, the applicant shall have the following
analyses signed and sealed by a licensed professional engineer for
submission with the site plan and construction documents:
a. For development activities proposed to be located in a regulatory floodway, a floodway encroachment analysis that demonstrates that the encroachment of the proposed development will not cause any increase in base flood elevations; where the applicant proposes to undertake development activities that do increase base flood elevations, the applicant shall submit such analysis to FEMA as specified in §
25-5.4 of these regulations and shall submit the conditional letter of map revision, if issued by FEMA, with the site plan and construction documents.
b. For development activities proposed to
be located in a riverine flood hazard area where base flood elevations
are included in the FIS or FIRM but floodways have not been designated,
hydrologic and hydraulic analyses that demonstrate that the cumulative
effect of the proposed development, when combined with all other existing
and anticipated flood hazard area encroachments will not increase
the base flood elevation more than 0.2 foot at any point within the
jurisdiction. This requirement does not apply in isolated flood hazard
areas not connected to a riverine flood hazard area or in flood hazard
areas identified as Zone AO or Zone AH.
c. For alteration of a watercourse, an engineering analysis prepared in accordance with standard engineering practices which demonstrates that the flood-carrying capacity of the altered or relocated portion of the watercourse will not be decreased, and certification that the altered watercourse shall be maintained, neither increasing nor decreasing the channel's flood-carrying capacity. The applicant shall submit the analysis to FEMA as specified in §
25-5.4 of these regulations. The applicant shall notify the chief executive officer of all affected adjacent jurisdictions, the NJDEP's Bureau of Flood Engineering and the Division of Land Resource Protection; and shall provide documentation of such notifications.
d. For activities that propose to alter sand
dunes in coastal high hazard areas (Zone V) and Coastal A Zones, an
engineering analysis that demonstrates that the proposed alteration
will not increase the potential for flood damage and documentation
of the issuance of a New Jersey Coastal Zone Management permit under
N.J.A.C. 7:7.
e. For analyses performed using Methods 5
and 6 (as described in N.J.A.C. 7:13) in flood hazard zones without
base flood elevations (approximate A Zones).
[Ord. #2526, 7-11-2023, adopted]
When additional hydrologic, hydraulic
or other engineering data, studies, and additional analyses are submitted
to support an application, the applicant has the right to seek a letter
of map change (LOMC) from FEMA to change the base flood elevations,
change floodway boundaries, or change boundaries of flood hazard areas
shown on FIRMs, and to submit such data to FEMA for such purposes.
The analyses shall be prepared by a licensed professional engineer
in a format required by FEMA. Submittal requirements and processing
fees shall be the responsibility of the applicant.