SW8910806_Current Permit_19911119

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State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James G. Martin, Governor Bob Jamieson
William W. Cobey, Jr., Secretary Regional Manager
November 19, 1991
DIVISION OF ENVIRONMENTAL
Mr. James F. Smith, Agent
Blair Properties, Inc.
Post Office Box 468
Wrightsville Beach, North Carolina 28480
Subject: Certification of Compliance
with Stormwater Regulations
Stormwater Project No. 910806
Pembroke at Landfall
New Hanover County
Dear Mr. Smith:
This Certification is pursuant to the Stormwater Application
for Pembroke at Landfall received on August 12, 1991, with
additional information received on November 13, 1991. Based on
our review of the project plans and specifications, we have
determined that the stormwater control system complies with the
Stormwater Regulations set forth in Title 15A NCAC 2H.1003(i).
The runoff will be treated in three (3) detention ponds which are
sized to achieve 90% reduction in Total Suspended Solids.
Additionally, runoff from an area near the site entrance will be
treated in 80 linear feet of exfiltration piping.
This Certification shall be effective from the date of
issuance until rescinded. The project shall be constructed and
maintained in accordance with the final plans and specifications
approved by the Wilmington Regional Office.
A professional engineer must certify that the stormwater
system has been installed in accordance with the approved plans
and specifications. The attached certification should be
received by this Office within 30 days of completion of
construction.
-Continued-
127 Cardinal Drive Extension, Wilmington, N.C. 2W5-3845 9 Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Mr. Smith
November 19, 1991
Page Two
If you have any questions concerning this matter, please
call Alexis Finn or me at [phone].
Sincerely, t
.....,. MDa Adkin
Water Quality Regional Supervisor
Attachment
DA/aif: 910806.NOV
cc: Keith Cooper
Mr. Sky Conklin
Alexis Finn
Wilmington Regional Office
Central Files

DIVISION OF ENVIRONMENTAL MANAGEMENT
Evaluation of Stormwater Treatment and Disposal System
Draining to Waters Other Than Class SA
PROJECT DATA
Project Name:
Project No.:
Pembroke at Landfall
910806
Location (County, Township/Municipality, Address):
Eastwood Road
Wilmington, North Carolina
New Hanover County
Applicant Name:
Mailing Address:
Submittal Date:
Mr. James F. Smith
Blair Properties, Inc.
Post Office Box 468
Wrightsville Beach, N.C. 28480
August 12, 1991
Water Body Receiving Stormwater Runoff:
Classification of Water Body:
DETENTION POND EVALUATION
Motts Creek
"SB #" _
lC bV VV
1. Yes No The design storage is for the runoff from all
impervious surfaces resulting from 1-inch of
rainfall and is located above the permanent
pool.
2. Yes No The permanent pool is designed for 90% TSS
removal. Therefore, no vegetative filter is
required.
3. Yes No The runoff completely draws down to the
permanent pool in 5 days, but not less than 2
days.
4. Yes No The mean depth of the permanent pool is a
minimum of 3 feet.
5. Yes No The inlet structure is designed to minimize
turbulence and short circuiting.
6. Yes No An appropriate operation and maintenance plan
has been provided for the system.

-Continued -
WET DETENTION POND EVALUATION CONTINUED
7. Yes No THIS PROJECT MEETS THE STORMWATER CONTROL
REQUIREMENTS OF 15A INCAC 2H.1003 (g), (i), (k),
and (1) (For Yes, 1 through 7 must all be
circled Yes.)
Brief Explanation: The surface area of three detention ponds
have been designed to remove 90% TSS without the aide of a
vegetative filter.
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Wilmington Regional Office
/1 4f /q/
Date In 1vidual Evaluating Form/Plans
,ad-AAhAlm Ic
Date jq
cc: Applicant/WiRO/Mills/CF
Water,/Quality Regional Supervisor

PEMBROKE AT LANDFALL
OPERATION AND MAINTENANCE SCHEDULE
STORMNATER DETENTION SYSTEM
1. Inspect detention ponds at monthly intervals minimally
and after all significant storms. A storm that raises
the normal pool 1 foot shall be considered significant.
Inspect outlet structure for damage and clogging.
2. It is recommended that a visual inspection be made
monthly of the inlets and outlets of the system to detect
blockages or flooding at inlets and manholes, or erosion
or damage to outlet devices. Inspections should also
follow heavy rainfalls (2" in 24 hours or more) and
intense storm events.
3. Annual inspections are recommended, to include removing
covers of all structures, cleaning debris or deposits
from structures, lamping lines for evidence of sediment
and repair as needed.
4. The wetted perimeter of ponds shall be planted with water
resilient vegetation appropriate to soil and site
characteristics and maintained to ensure growth of such
vegetation.
5. Side slopes which exhibit sloughing, channel erosion, or
vegetative wash -out shall be repaired immediately.
6. Rip rap may occasionally require repositioning and
replacement because of heavy flow displacing the
material.
7. A report form is attached for use in both monthly and
annual inspections. These reports should be maintained
in a central file, available to the Division of
Environmental Management in accordance with the
Certification.
8. A stamped Engineer's Certification which ensures
construction is consistent with the plans and
specifications approved by the Division of Environmental
Management shall be provided to the Division of
Environmental Management within 30 days from project
completion.
y. Measure sediment accumulation in bottom of ponds at six
month intervals. C' arm u sediment depth exceeds
six inches. I5 II L� U
AUG 1 '2 1991
D E M
_> 0 J# R/OFOG

Accidental Spills or Overwash of Polluted Areas
10. In the event of an accidental sill or overwash of an
area containing hazardous material, the event should be
immediately reported to A. Preston Howard, Jr., P.E.,
Regional Supervisor, 127 Cardinal Drive Extension,
Wilmington, NC 28405 (Telephone [phone]).
11. Immediate action by the Owner should be taken to contain
the spill or overwash, if possible, corrective actions
should be taken with the advice of the Regional
Supervisor or other designated officials having
authority in such matters.
12. The Owner, Blair Properties, Inc., shall be responsible
for implementing this maintenance plan.
I, James F. Smith, an agent of Blair Properties, Inc., accept
responsibility for operation and maintenance of the
stormwater detention system for Pembroke at Landfall.
Q -
�'� 4. Q-X
0 SIGNED
<g - (,,-,:A1
DATE
D F- M
ri, 0 94,0206

Pembroke at Landfall
Stormwater Project No. 910806
Engineer's Certification
RECEIVED
MAR 15 1993
Wilmington Regional Office
DEN!
I, S. 64L l Oa 12T= , as a duly registered Professional Engineer in the
State of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the project,
La,'D f A n
(Project)
for g 'r Pro pioA eo--P I �- c_ (Project Owner) hereby state that, to the best of my
abilities, due care anddiligence was
as used in the observation of the project construction such that the
construction was observed to be built within substantial compliance and intent of the approved plans
and specifications.
Signature ®�a�s', Ct�
Registration Number I Z S (� _= S F A L
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1256 R
Date
J i [ I } ,
STORMWATER
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MAR 1 6 1493
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