SW3200202_Response to Comments_20210504

'JI MCADAMS
April 8, 2021
NC Emergency Management, Risk Management
NC MT-2 LOMC Depot
Attn: Scott Gentry, PE, CFM
Raleigh, North Carolina 27699
RE: FEMA and North Carolina Floodplain Mapping Program
Case Number: 21-04-1603R
Response to FEMA Floodplain Comments
KLP-19000
RESPONSE TO COMMENTS > KLP-19000
The following are the response comments for the above -mentioned project. Our response comments are in bold.
General Comments
The issues listed below must be addressed before NCFMP can continue the review of your request.
1. Note that effective February 20, 2015, the FEMA revised the fee schedule for reviewing and processing
requests for conditional and final modifications to published flood information and maps. A copy of the notice
summarizing the current fee schedule, which was published in the Federal Register, can be found at
https://www.fema.gov/flood-maps/change-your-flood-zone/status/flood-map-related-fees. In accordance
with this schedule, the fee for your request is $6,750 and must be submitted before we can continue
processing your request. Payment of this fee must be made in the form of a check or money order, payable in
U.S. funds to the National Flood Insurance Program, or a credit card payment (Visa or MasterCard only). For
identification purposes, the case number referenced above must be included on the check or money order.
The FEMA Payment Information Form, which can be found at https://www.fema.gov/sites/default/files/2020-
09/fema_flood-maps_payment-information-form_2019.pdf, is to accompany the payment. The payment must
be forwarded to the following address:
LOMC Clearinghouse
3601 Eisenhower Avenue, Suite 500
Alexandria, VA 22304-6426
McAdams Response: The check for this project has been made out and references this case number 21-04-
1603R.
2. MT-2 Form 1 was not signed by the applicant. In addition to Unincorporated Areas of Union County, it appears
that the Town of Indian Trail is impacted by the project. Please submit a MT-2 Form 1 signed by the applicant
and separate MT-2 Form 1 for the Town of Indian Trail.
creating experiences through experience 2905 Meridian Parkway, Durham, NC 27713 / 919. 361. 5000

'JI MCADAMS RESPONSE TO COMMENTS > KLP-19000
McAdams Response: Both Union County and Indian Trail have signed the attached MT-2 forms.
3. The CLOMR request will be processed by FEMA only after FEMA receives documentation from the requestor
that demonstrates compliance with the Endangered Species Act (ESA). For projects that are not constructed,
funded, or permitted by a federal agency, the requestor must demonstrate ESA compliance by submitting to
FEMA written justification that a "Take," meaning to harass, harm, pursue, hunt, shoot, wound, kill, trap,
capture, or collect, or to attempt to engage in any such conduct, will not occur to threatened and endangered
species present in the county as a result of the project. If a project has the potential to "Take" listed species,
an Incidental Take Permit may be submitted with justification that the project is the subject, or is covered by
the subject, of the permit.
For projects with federal construction, funding, or permitting, a "not likely to adversely affect" determination
from the Services, a "No Effect" determination from the federal action agency, or other approval from the
Services is acceptable documentation of ESA compliance.
Federal Emergency Management Agency
Washington, DC 20472
North Carolina Floodplain Mapping Program
Cooperating Technical State
McAdams Response: Endangered Species Act report is included with this submittal.
4. The following comments are regarding the topographic workmap (p. 51 of the submittal package):
a. Please resubmit a certified copy of the workmap that is signed and dated by a professional engineer.
McAdams Response: A revised, signed and sealed copy of the work map has been submitted for review.
b. Contour lines should be labeled, and a vertical datum is required.
McAdams Response: Noted
c. Update the final workmap to show the effective, corrected effective, and proposed conditions mapping on
the same map so that a comparison of changes can be made.
McAdams Response: Noted
The following supporting files do not appear to be included with the CLOMR submittal. These files are
requested in order for the technical review to be completed:
Design drawings for the proposed culvert and road crossing that are certified by a professional engineer.
McAdams Response: Proposed culvert and road crossing drawings have been included with this submittal.
b. Digital mapping files (GIS, CAD, etc.) for the corrected effective and proposed conditions models.
McAdams Response: The .SHP files for corrected effective and proposed conditions models have been
included.
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'JI MCADAMS
RESPONSE TO COMMENTS > KLP-19000
6. The following issues were observed as part of the initial review of the HEC-RAS model. Upon receipt of the
design plans (Comment 5a.) a technical review will be conducted, which may result in additional comments.
a. When loading the model into HEC-RAS, a message states that the .g04, .g02, .g05, and .g06 files were not
found. Please clean any erroneous files from the model folder and resubmit.
McAdams Response: Erroneous files have been removed from the model.
b. A surcharge of 1.08-ft was observed at cross section 26451.54 in the corrected effective model. All
surcharge values should fall within the range of 0.0-ft to 1.0-ft.
McAdams Response: After correcting the encroachment stations and other errors present in model the
surcharge has been adjusted so that it is less than 1.0ft.
c. In the corrected effective model, the right encroachment station at cross section 26451.54 is not contained
within the 100-year water surface elevation (WSEL). The review also found that encroachment stations fall
outside the 100-year WSEL at cross sections 26451.54 and 26406 in the proposed conditions.
Encroachments should be adjusted to ensure they fall within the 100-year WSEL.
McAdams Response: Noted. The encroachment stations have been adjusted to fall within the 100-yr
WSEL.
Consideration of this response is greatly appreciated. If you should have any questions or require additional
information, please do not hesitate to contact me at 919. 361. 5000.
Sincerely,
MCADAMS
Daniel Wiebke PE CFM
Project Manager, Water Resources
DW/cg
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