AddInfoRequest

Energy, Mineral
and Land Resources
ENVIRONMENTAL QUALITY
January 5, 2018
Mr. Larry W. Anderson, PE
Anderson Engineering & Assoc., PA
305 N. Chippewa St.
Lumberton, NC 28358
Subject: Request for Additional Information
Stormwater Permit No. SW5171201
Atlantic Packaging — Youngsville, NC
Franklin County
Dear Mr. Anderson:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
TOBY VINSON
Interim Director
The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater
Management Permit Application for the subject project on December 12, 2017. A preliminary
review of that information has determined that the application is not complete. The following
information is needed to continue the stormwater review:
1. Provide a completed Supplement EZ form for each BMP. This is available on our
website at https://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-
mineral-land-permit-guidance/stormwater-bmp-manual .
2. Since not seeking volume matching credit, the application form SWU-101 should be used
since Storm -EZ has not been updated to be consistent with the new rules and MDC.
https:Hdeq.nc. gov/about/divisions/energy-mineral-land-resources/energy-mineral-land-
rules/stormwater-pro . rg am/post-construction
3. Provide pre- and post -development DA maps, on a full size sheet, that delineates the DA
to the SCM. This should label the areas in square feet for total area and BUA.
4. Please provide a BUA breakdown of existing BUA, existing BUA to remain, proposed
BUA to the added, and total post -construction BUA.
5. The gravel firelanes are counted as BUA unless they are at least 4" of washed #57 stone
over a geotextile in accordance with NCGS 143-214.7.
6. The offsite area to the north and west appears to drain into the swale and into the
proposed SCM. That offsite area and offsite BUA must be accounted for in the pond
design. Offsite area may also be bypassed. Otherwise, some future BUA must be

accounted for on that offsite area since it is not controlled by the applicant. [General
MDC 1 ]
7. Show the existing contours for the existing parking lot on the east side of the existing
bldg. Does this BUA drain to the proposed SCM?
8. The net increase in BUA must be treated; plus any other BUA that cannot be bypassed
around the proposed SCM.
9. Show the existing contours and how the proposed contours will tie-in on the northeast
side of the pond.
10. Label lot 8A on the plans that is referenced on the deed restrictions form.
11. Revise the pond SCM:
a. Revise grading to not show two sets of overlapping contours.
b. Revise the vegetated shelf planting plan to not include trees or woody shrubs. Per
the MDC trees and woody shrubs are not allowed on the dam embankment.
c. The slopes show in the cross-section for the shelf and below PPE are not
consistent with that shown on the plan view.
d. The low flow orifice is 4" diameter on the riser structure detail, but the calcs show
a minimum of 1.4" to meet the 2-5 day drawdown requirement.
e. Provide a access and maintenance easement from the pond to the public r/w.
[General MDC 8 & 9]
f. Note that only 6" of sediment storage is required, but 1' is acceptable as proposed.
[MDC 3]
12. Revise the calcs:
a. For this project location, the WQV should be based on 1", not post -pre 1 -yr, 24 -hr
storm. The calcs use the I", while the storm-ez form uses 1 -yr.
b. Revise the stage storage table to have a consistent PPE. The table on pg 1 or 27
in the calcs shows PPE at 438, but the plans show it at 441.5.
c. Verify that the WQV of 9,239 cf is still provided after making the changes above
in b.
d. The stage storage discharge table is not consistent with the other calcs. It shows
only 2,904 cf of storage in the pond. Which is correct?
e. Provide supporting calcs that the minimum required SA is provided. [MDC 1]
f. Provide supporting clacs that the average depth is at least 3', not including the
sediment storage. [MDC 2]
g. Provide supporting calcs that show the forebay volume is 15 - 20% of the main
pond volume. [MDC 5]
13. To receive credit for the grass swale, it must be designed to meet all of the MDC in C-11
of the SCM Manual. Also, provide supporting calcs. to demonstrate these MDC.
Nothing Compares---,-
State
ompares..
State of North Carolina Environmental Quality l Energy, Mineral and Land Resources
512N. Salisbury Street 11612 Mail Service Center Raleigh, North Carolina 27699-1612
919 707 9200

14. Provide pdfs of all revisions, 2 hardcopies of revised plan sheets, and 1 hardcopy of other
documents. Pdfs must be uploaded using the form at:
https://edoes.deq.nc.gov/Forms/SW ProjectSubmittal
Please note that this request for additional information is in response to a preliminary review.
The requested information should be received by this Office prior to February 5, 2017, or
the application will be returned as incomplete. The return of a project will necessitate
resubmittal of all required items, including the application fee.
If you need additional time to submit the information, please submit your request for a time
extension to the Division at the contact below. The request must indicate the date by which you
expect to submit the required information. The Division is allowed 90 days from the receipt of
a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject
to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number SW5171201 on all correspondence. If you
have any questions concerning this matter please feel free to contact me at
Robert.Pattersonnncdenr.gov or [phone].
Sincerely,
Robert D. Patterson, PE
Environmental Engineer
Stormwater Program
ec: Raleigh Regional Office
Russell Carter — Atlantic Packaging
Lex Johnson — Atlantic Packaging
Nothing Compares --.,-
State of North Carolina Environmental Quality Energy, Mineral and Land Resources
512N. Salisbury Street 1612 Mail Service Center Raleigh, North Carolina 27699-1612
919 707 9200