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 § 146-5.2.
(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 § 146-5.2A(3) 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.
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 pay the processing fees.
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 § 146-5.4 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 § 146-5.4 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).
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.
