SW8971225_HISTORICAL FILE_19980416

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 T1►225
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
® HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
l q `1 8 01A K0
YYYYMMDD

- State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
Mr. Walter Pancoe, President
The Caper Corporation
1901 Kent Street, Suite E
Wilmington, NC 28403
Dear Mr. Pancoe:
At, •
'/2 ft
NCDENR
NORTH C.AROUNA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
April 16, 1998
Subject: Permit No. SW8 971225
1900 Dawson Street Condominiums
High Density Commercial Stormwater Project
New Hanover County
The Wilmington Regional Office received the Stormwater Management Permit Application for 1900 Dawson Street
Condominiums on December 22, 1997, with final information on April 15, 1998. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title
15A NCAC 21I.1000. We are forwarding Permit No. SW8 971225 dated April 16, 1998, for the construction of 1900
Dawson Street Condominiums.
This permit shall be effective from the date of issuance until April 16, 2008, and shall be subject to the conditions and
limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit.
Failure to establish an adequate system for operation and maintenance of the stormwater management system will result
in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be
in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at
[phone].
Sptcerely,
Ric�_' ft4-�/
k Shiver, P.G.
Acting Regional Water Quality Supervisor
RSS/arl: S:\WQS\STORMWAT\PERMIT\971225.APR
cc: John Tunstall, P.E.
Tony Roberts, New Hanover County Inspections
David Mayes, P.E., City of Wilmington Engineering
Beth Easley, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No SW8 971225
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
MCI d;JAlJ4M"
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other
applicable Laws, Rules; and Regulations
PERMISSION IS HEREBY GRANTED TO
The Caper Corporation
1900 Dawson Street Condominiums
New Hanover County
FOR THE
construction, operation and maintenance of a detention pond in compliance with the provisions of 15A NCAC 2H .1000
(hereafter referred to as the "stormwater rules") and the approved stormwater management plans and specifications and
other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of
this permit.
This permit shall be effective from the date of issuance until April 16, 2008 and shall be subject to the following specified
conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in the application and
other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this
permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from 88,835 square
feet of impervious area.
3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the
permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved
plans.
2

State Stormwater Management Systems
Permit No SWS 971225
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Water Body Receiving Stormwater Runo
Classification of Water Body:
If Class SA, chloride sampling results:
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Total Impervious Surfaces, ftz:
Offsite Area entering Pond, ft2:
Required Surface Area, ft2:
Provided Surface Area, ftz:
Required Storage Volume, ft3:
Provided Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
1900 Dawson Street Condominiums
SW8 971225
New Hanover County
Mr. Walter Pancoe, President
The Caper Corporation
1901 Kent Street, Suite E
Wilmington, NC 28403
December 22, 1997
ff: Mineral Springs Branch
"C Sw"
n/a
6.5
20.5
88,835
6,138 from Colwell Avenue
4,071
6,840
7,434
9,875
21.75
1.5"P pipe
3

State Stormwater Management Systems
Permit No. SWS 97122
5. All runoff from the built -upon area on site must be directed into the permitted stormwater control system.
6. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -
upon area.
The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
In addition, the Director may determine that other revisions to the project should require a modification to the
permit.
The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time
schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies
of revised plans and certification in writing to the Director that the changes have been made.
II. SCHEDULE OF COMPLIANCE
The permittee will comply with the following schedule for construction and maintenance of the stormwater
management system:
a. The stormwater management system shall be constructed in it's entirety, vegetated and operational for it's
intended use prior to the construction of any built -upon surface except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately.
The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater
system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its
entirety and maintenance must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ.
The records will indicate the date, activity, name of person performing the work and what actions were taken.
Decorative spray fountains will not be allowed in the ponds.
5. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this
permit, the approved plans and specifications, and other supporting data.
11

State Stormwater Management Systems
Permit No SW8 971225
Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this
permitted facility, a certification must be received from an appropriate designer for the system installed certifying
that the permitted facility has been installed in accordance with this permit, the approved plans and specifications,
and other supporting documentation. Any deviations from the approved plans and specifications must be noted on
the Certification.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten
years from the date of the completion of construction.
Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall
be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale of any portion
of the property.
HI. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a
name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality
accompanied by an application fee, documentation from the parties involved, and other supporting materials as may
be appropriate. The approval of this request will be considered on its merits and may or may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement
action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-
215.6C.
The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which
have jurisdiction.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the
Permittee shall take immediate corrective action, including those as may be required by this Division, such as the
construction of additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all components
of the permitted stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit
modification, revocation and reissuance or termination does not stay any permit condition.
Permit issued this the 16th day of April, 1998.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Preston Howard, Jr., P.E., Direc otor
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 971225

State Stormwater Management Systems
Permit No SW8 971225
1900 Dawson Street Condominiums
Stormwater Permit No. SW8 971225
New Hanover County
Engineer's Certification
1, , 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,
for (Project Owner) hereby state that, to the best of my abilities, due care and
diligence was 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.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
0

A&K 97277
DIVISION OF WATER QUALITY
NORTH CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATION
1. GENERAL INFORMATION
(Please print clearly or ope)
1. Project Name: 1900 Dawson Street Office Condos
2. Location, directions to project (include County, Address, State Road) Attach map.
Corner of Wrightsville Avenue and Dawson Street; New Hanover County; 1900 Dawson Street
e aper orP., enera artner
3. Owner's Name: Mr. Walter Pancoe/ 1900 Ltd. PartnershipPhone: 910-343-0029
4. Owner's Mailing Address: 1901 Kent Street, Suite E
City Wilmington State NC
5. Nearest Receiving Stream Mineral Springs Branch Class
6. Project description Office Complex
I l� 9 D17a ttffl003tiklMI II (110
1. Permit N0.(7obenuedinbyD1VQ)
C-SW
Zip 28403
2. Application Date December 11, 1997 Fee enclosed $ S385 00
3. Permit Type
X New
Renewal—
Modification(existing Permit No.)
4. Proj Type
Low Density
X Detention
Infiltration Redevelop General Alter Offsite
5. Other State/Federal Permits/Approvals Required (Check appropriate blanks)
CAMA Major Sedimentation/Erosion Control X 404 Permit
Ill. BUILT UPON AREA (Please see NCAC 1H.1005 thru. 1007for applicable density limits)
Drainage
Basin
Classification C-SW
€xist+ng Built -upon Area _D-_TM
Proposed Built -upon Area 1.62AC
Total Project Area 4.25AC
% Impervious Area 48%
Drainage Breakdown of Impervious Area
Basin (Pease indicate below the design anperimour area)
Buildings
23, 537 Ft'
Streets
613H W Colwell
Parking/SW
46,910 W / 12,250 Ft
Other:
Totals
88,835 Ft2 = 2.04 AC
IV. STORMWATER TREATMENT (Describe how the runoffwill be treated)
Detention Pond 90% TSS Removal

_y
V. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required to be recorded for all low density projects and all
subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded for
the type of project applied for.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the items required by the permit, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the covenant cannot be changed or deleted without
concurrence from the State, and that they will be recorded prior to the sale of any lot.
VI. OWNER'S CERTIFICATION
I, Walter Pancoe certify that the information included on this permit
(Please print or type name clearly)
application form is correct, that the project will be constructed in conformance with the approved plans, that
the deed restrictions will be recorded with all required permit conditions, and that to the best of my knowledge,
the proposed project complies with the requirements of 15A NCAC 2H.1000,
I authorize the below named person or firm to submit stormwater plans on my behalf.
VII. AGENT AUTHORIZATION (Musre6coMPl E7w)
Person or firm name John S. Tunstall, P.E./ Andrew & Kuske Consulting Engineers, Inc.
Mailing Address
902 Market Street
City Wilmington State NC Zip 28401 Phone [phone]
Please submit application, fee, plans and calculations to the appropriate Regional Office.
cc: Applicant/WiRO//Central Files
Office Use Only
J
DEC 2 2 1997

It
.71

POND MAINTENANCE REQUIREMENTS
Project Name: 1900 Dawson Street Office Condos Project Number:
Responsible Party: The Caper Corp/General Partner 1900 Ltd. Partnership Phone Number: 910-343-0029
Address: 1901 Kent Street/Suite E, Wilmington, NC 28403
1. Inspect monthly, or after every runoff -producing rainfall event, whichever comes first
A. Remove debris from the trash rack.
B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check for
pump operation.
C. Check the pond side slopes; remove trash, repair eroded areas before the next rainfall event.
D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and
proper operation of the flow spreader mechanism. Repair as necessary.
11. Quarterly
A. Inspect the collection system (i.e., catch basin, piping, grassed swales) for proper functioning. Clear
accumulated trash from basin grates and basin bottoms, and check piping for obstructions.
B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes.
C. Reseed grassed swales, including the vegetated filter if applicable, twice a year as necessary. Repair
eroded areas immediately.
III. Every 6 months
A. Remove accumulated sediment from the bottom of the outlet structure.
B. Check the pond depth at various points in the pond. If depth is reduced to 75% of original design depth,
6_5 feet, sediment will be removed to at least original design depth.
STORMWATER
E C E i V E
FEB 2 61998 D
D E M
PROJ N

POND MAINTENANCE REQUIREMENTS CONTINUED
PAGE 2
IV. General
A. Mow the side slopes, not including normally submerged vegetated shelf, according to the season.
Maximum grass height will be 6"
B. Cattails, and other indigenous wetland plants, are encouraged along the pond perimeter; however, they must
be removed when they cover the entire surface area of the pond.
C. The orifice is designed to draw down the pond in 2-5 days. If drawdown is not accomplished in that time,
the system may be clogged. The source of the clogging must be found and eliminated.
D. All components of the detention pond system must be kept in good working order.
Special Requirements.
I, Walter Pancoe , hereby acknowledge that I am the financially
responsible party for maintenance of this detention pond. I will perform the maintenance as outlined above, as part of the
Certification of Compliance w#h Stormwater Regulations received for this project.
Signature:
I, Swsa'n 6. S hXN e. lc(
Date: December 17, 1997
a Notary Public for the State of No r4+) Ca" I i ng
County of NCW 4dA,0V9X , do hereby certify that W0.1 t Q Y Fo-"Coe.
personally appeared before me this 11+h day of -172 OCm ber , 19 97 and
the due execution of the foregoing instrument. Witness my hand and official
SEAL
My Commission Expires: Z3, 2002,

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ANDREW. & KUSKE
'CONSULTING ENGINEERS,, INC.
'902 M9rket Street wilmFi ton, NC 28401
Phone [phone] FAX [phone]
MEMO
CONFERENCE
TELEPHONE CALL
TO:
FROM: JOHN S. TUNSTALL P. E.
AM
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�PM
G� IZZS
TU W TH F S
APRIL 15 199B—
PROJECT: 1900 DAWSON STREET PROJECT M 97277
IN REFERENCE TO YOUR LETTER OF APRIL 14 1998,PLEASE_ FIND THE STORMWATER
CALCULATIONS WHICH REFLECTS PERMANENT POOL SURFACE ELEVATION OF 6,840 Ff.
IF YOU NEED ADIjITIONAL INFORMATION PLEASE FEEL FREE TO CALL.
THANKS.
(j A4tion N80e886ry by Andrew & KUske
(j No Action Necessary by Andrew & Kuske
ATTACHMENT
+J�H�S. TUNSTALL, P. E.

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James B. Hunt, Governor Wayne McDevitt, Secretary
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An Equal Opportunity Aifirmative Action Employer

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
April 14, 1998
Mr. John Tunstall, P.E.
Andrew and Kuske Engineers
902 Market Street
Wilmington, NC 28401
KFEMA_:
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 971225
1900 Dawson Street
New Hanover County
Dear Mr. Tunstall:
The Wilmington Regional Office received previously requested information for the Stormwater
Management Permit Application for 1900 Dawson Street on February 26, 1998. A preliminary review of
that information has determined that the application is not complete. The following information is needed
to continue the stormwater review:
The calculations indicate two permanent pool surface areas, one at 5,570 (bottom of page 1)
and one at 6,840 (top of page 2). You have used 6,840 to calculate the volume and orifice.
Should you have used 5,570? Which is correct? Please revise.
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 May 14, 1998, 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 have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
RSS/arl: S:\WQS\STORMWAT\ADDINFO\971225.APR
cc: Linda Lewis
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

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Prepared by ANDREW & KUSKE CONSULTING ENGINEERS, INC. ,:an ,c
HydroCAO 4.523 000479 (c) 1986-1996 Applied Microcomputer Systems
POND 1
POND
Din = 18.64
CFS @ 12.10
HRS,
VOLUME= 1.21 AF
Qout= 5.98
CFS @ 12.48
HRS,
VOLUME= .83 AF,
ATTEN= 68%, LAG=
22.5
MIN
ELEVATION
AREA INC.STOR
CUM.STOR
STOR-IND METHOD
(FT)
(SF)
(CF)
(CF)
PEAK STORAGE =
33272
CF
19.5
3500
0
0
PEAK ELEVATION=
23.4
FT
20.5
6840
5170
5170
FLOOD ELEVATION=
24.0
FT
24.0
12780
34335
39505
START ELEVATION=
20.5
FT
SPAN= 10-15 HRS,
dt=.1
HRS
Tdet= 89 MIN (.71
AF)
ROUTE INVERT OUTLET DEVICES
1 P 20.5' 1.5" ORIFICE/GRATE
Q=.6 PI r'2 SQR(2g) SQR(H-r)
2 P 21.8' 1.5' x .75' ORIFICE/GRATE
Q=.6 Width 2/3 SQR(2g) (H'1.5 - [H-Height]-l.5)
3 P 23.4' 16' SHARP -CRESTED RECTANGULAR WEIR
Q=C L H-1.5 C=3.27+.4 H/2 L=Length-2(.1 H)

Data ror 1900 DAWSON ST
TYPE III 24-HOUR RAINFALL= 7.0 IN
Prepared by ANDREW & KUSKE CONSULTING ENGINEERS, INC. ! an 4
HYdroCAO 4.523 000479 (c) 1986-1996 Applied Microcomputer Systems
REACH I
OUTLET PIPE
Qin = 5.98 CFS @ 12.48 HRS, VOLUME= .83 AF
Qout= 6.00 CFS @ 12.45 HRS, VOLUME= .82 AF, ATTEN= 0%, LAG=
DEPTH END AREA DISCH
(FT)
(SO -FT)
(CFS)
0.0
-0.0
0.00
.2
.2
.36
.4
.4
1.52
.6
.8
3.39
1.4
2.3
14.51
1.6
2.7
16.94
1.8
3.0
18.47
1.9
3.1
18.64
1.9
3.1
18.47
2.0
3.1
17.33
QW210
n= .012
LENGTH= 60 FT
SLOPE= .005 FT/FT
0.0 MIN
STOR-IND+TRANS METHOD
PEAK DEPTH= .79 FT
PEAK VELOCITY= 5.2 FPS
TRAVEL TIME _ .2 MIN
SPAN= 10-15 HRS, dt=.1 HRS

Data For 1900 DAMSON ST Pace S
TYPE III 24-HOUR RAINFALL= 9.0 IN
Prepared by ANDREW & KUSKE CONSULTING ENGINEERS, INC. 14 Jan 98
HydroCAD 4.523 000479 (c) 1986-1996 Applied Microcomputer Systems
WATERSHED ROUTING
OSUBCATCHMENT REACH Q PCND I LINK

Data for 1900 DAWSON ST Paae 6
TYPE III 24-HOUR RAINFALL= 9.0 IN
Prepared by ANDREW & KUSKE CONSULTING ENGINEERS, INC. 14 Jan 98
HydroCAD 4.523 000479 (c) 1986-1996 Applied Microcomputer Systems
SUBCATCHMENT I
ENTIRE SITE INCLUDING COLWELL ENTRANCE
PEAK= 26.05 CFS @ 12.10 HRS, VOLUME= 1.70 AF
ACRES CN SCS TR-20 METHOD
2.03 98 IMPERVIOUS AREA TYPE III 24-HOUR
2.22 60 LANDSCAPE AREAS/GRASS RAINFALL= 9.0 IN
4.25 78 SPAN= 10-15 HRS, dt=.1 HRS
Method Comment Tc (min)
DIRECT ENTRY ENTIRE SITE 10.0

Data for 1900 DAWSON ST Face 8
TYPE III 24-HOUR RAINFALL= 9.0 IN
Prepared by ANDREW & KUSKE CONSULTING ENGINEERS, INC. 14 Jan 98
HydroCAD 4.523 000479 (c) 1986-1996 Applied Microcomputer Systems
' 1 11M
POND
Qin = 26.05 CFS @ 12.10 HRS, VOLUME= 1.70 AF
Qout= 18.31 CFS @ 12.25 HRS, VOLUME= 1.30 AF, ATTEN= 30%, LAG= 8.7 MIN
ELEVATION
AREA
INC.STOR
CUM.STOR
STOR-IND METHOD
(FT)
(SF)
(CF)
(CF)
PEAK STORAGE =
36877
CF
19.5
3500
0
0
PEAK ELEVATION=
23.7
FT
20.5
6840
5170
5170
FLOOD ELEVATION=
24.0
FT
24.0
12780
34335
39505
START ELEVATION=
20.5
FT
SPAN= 10-15 HRS,
dt=.l HRS
Tdet= 69.6 MIN (1.16 AF)
1 P 20.5' 1.5" ORIFICE/GRATE
Q=.6 PI r"2 SQR(29) SQR(H-r)
2 P 21.8' 1.5' x .75' ORIFICE/GRATE
Q=.6 Width 2/3 SQR(2g) (H-1.5 - [H-Height]-l.5)
3 P 23.4' 16' SHARP -CRESTED RECTANGULAR WEIR
Q=C L H-1.5 C=3.27+.4 H/2 L=Length-2(.1 H)

Data for 1900 DAMSON ST Page 7
TYPE III 24-HOUR RAINFALL= 9.0 IN
Prepared by ANDREW & KUSKE CONSULTING ENGINEERS, INC. 14 Jan 98
HydroCAD 4.523 000479 (c) 1986-1996 Applied Microcomputer Systems
REACH I
OUTLET PIPE
Qin = 18.31 CFS @ 12.25 HRS, VOLUME= 1.30 AF
Qout= 17.36 CFS @ 12.26 HRS, VOLUME= 1.30 AF, ATTEN= 5%, LAG= 1.0 MIN
DEPTH END AREA DISCH
(FT)
(SO -FT)
(CFS)
0.0
-0.0
0.00
.2
.2
.36
.4
.4
1.52
.6
.8
3.39
1.4
2.3
14.51
1.6
2.7
16.94
1.8
3.0
18.47
1.9
3.1
18.64
1.9
3.1
18.47
2.0
3.1
17.33
24" PIPE
n= .012
LENGTH= 60 FT
SLOPE= .005 FT/FT
STOR-IND+TRANS METHOD
PEAK DEPTH= 1.61 FT
PEAK VELOCITY= 6.3 FPS
TRAVEL TIME _ .2 MIN
SPAN= 10-15 HRS, dt=.1 HRS

LFEB 2 1gggJohn R. Andrew, P.E.
Andrew & Kusk J.A. Kuske, P.E.
CONSULTING ENGINEERS, INC. �--- J. Phillip Norris, P.E.
902 Market St. Wilmington, North Carolina 28401-4733 • Telephone [phone] • Fax [phone]
February 25, 1998
I — ,,
`�mI x ! i
NCDENR/Div. of Environmental Mgmt.
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
RE: 1900 Dawson Street Office Condos
Stormwater Project #SW8 971225
A & K Project No. 97277
Dear Ms. Lewis:
Please find the following responses to your comments of February 20, 1998.
See note #34 on Sheet C4.
2. Vicinity map revised.
3. Dawson Street and Wrightsville Avenue have curb and gutter directing the storm
drainage into storm sewer system which ultimately drains to the culvert under
Wrightsville Avenue. Right of way area of these streets drain to road. The entire
area of the site is included into the pond (see plan).
4. See note #33 Sheet C4.
5. Approximate building dimensions provided.
6. Normal pool dimensioned.
7. State flood pool elevation 21.75 is delineated.
8. 0 & M reflects 6.5 foot depth.
Sincerely,
ANDREW 8r KUSKE
CONSULTING ENGINEERS, INC.
4-6 A - juxw-��� I *M
John S. Tunstall, P. E.
JST/tsm
Attachments
97277-25

State of North Carolina
'Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
February 20, 1998
Mr. John Tunstall, P.E.
Andrew and Kuske
902 Market Street
Wilmington, NC 28401
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: ACKNOWLEDGEMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 971225
1900 Dawson Street
New Hanover County
Dear Mr. Tunstall:
The Wilmington Regional Office received a Stormwater Management Permit Application for 1900
Dawson Street on December 22, 1997. 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. Note on the plans that all roof drains must be directed into the collection system.
V2. The vicinity map shows Park Avenue, but the plans show Colwell Avenue. Please clarify.
✓3. Any offsite runoff from Dawson Street or Wrightsville Avenue? Spot elevations seem to
suggest that there is. Please delineate the drainage area to the pond, and make calculation
revisions as needed.
✓4. Delineate all wetlands on site, or note on the plans that none exist. The pond may not be
located within wetlands.
/5. Building dimensions or typical unit footprints.
AAdd dimensions for each side or arc of the figure created by the permanent pool.
f 7. Delineate and label the 21.9 State storage contour.
8. Please list 6.5' as the design depth in the O & M. After the design is noted, you may then
give the 4.9' benchmark to clean out the accumulated sediment.
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

i
Mr. Tunstall
February 20, 1998
Stormwater Project No. SW8 971225
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 March 20, 1998, 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 have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
RSS/arl: S:\WQS\STORMWAT\ADDINF0\971225.17EB
cc: Linda Lewis
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10°/ post -consumer paper

POND MAINTENANCE REQUIREMENTS
Project Name: 1900 Dawson Street Office Condos Project Number:
Responsible Party: The Caper Corp/General Partner 1900 Ltd Partnership Phone Number: 910-343-0029
Address: 1901 Kent Street/Suite E, Wilmington, NC 28403
II.
Inspect monthly, or after every runoff -producing rainfall event, whichever comes first
A. Remove debris from the trash rack.
B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check for
pump operation.
C. Check the pond side slopes; remove trash, repair eroded areas before the next rainfall event.
D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and
proper operation of the flow spreader mechanism. Repair as necessary.
Quarterly
A. Inspect the collection system (i.e., catch basin, piping, grassed swales) for proper functioning. Clear
accumulated trash from basin grates and basin bottoms, and check piping for obstructions.
B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes.
C. Reseed grassed swales, including the vegetated filter if applicable, twice a year as necessary. Repair
eroded areas immediately.
III. Every 6 months
A. Remove accumulated sediment from the bottom of the outlet structure.
B. Check the pond depth at various points in the pond. If depth is reduced to 75% of original design depth,
4.90 feet, sediment will be removed to at least original design depth.
STORATER
D E C E I V E
DEC 2 21997 D
ZZS
PROJ #

DEG 2 z John R. Andrew, P.E.
Andrew & Kuske 1997 J.A. Kuske, P.E.
CONSULTING ENGINEERS, INC. BY,_--`- J. Phillip Norris, P.E.
902 Market St. • Wilmington, North Carolina 28401-4733 • Telephone [phone] • Fax [phone]
December 15, 1997
NC DENR
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
Re: 1900 Dawson Street Office Condos
New Hanover County
A&K Project No. 97277
Dear Ms. Lewis:
F 2 W-0m wone,
Enclosed are three sets of plans for the subject project, calculations, the Division
of Water. Quality stormwater management permit application and a $385.00
check for the processing fee.
Please review this information for approval and contact us with any questions or
comments you may have. Thank you for your assistance on this project.
Sincerely,
ANDREW & KUSKE
CONSULTING ENGINEERS, INC.
John S. Tunstall, P.E.
JST/tsm
Enclosures
cc: Mr. Walter Pancoe/The Caper Corporation
972ns,m