SW8040809_HISTORICAL FILE_20051107

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW p4&9&1/
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
WYYMMDD

, -STORMWATER- DIVISION
RESCISSIONS
PERMIT NO.,`
CODING -SHEET- - -'
.
DOC TYPE ❑ COMPLETE
DATE OF p
-RESCISSION YYYVMmnn
FILE- HISTORICAL

State Stormwater Management Systems
Permit No. SW8 040809
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
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
Anthony Verricchia, New Hanover Regional Medical Center
O. R. Sterile Storage- Cape Fear Hospital
New Hanover County
FOR THE
construction, operation and maintenance of an underground infiltration trench 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 November 7, 2015, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. 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 in Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 3,367 square feet of
impervious area. This trench must be operated with a 30' vegetated filter.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 040809
The following design criteria have been provided in the infiltration trench and
must be maintained at design condition:
a.
Drainage Area, acres:
0.8
Onsite, ft2:
3,367
Offsite, ft2:
None
b.
Total Impervious Surfaces, ft2:
3,367
C.
Design Storm, inches:
1
d.
Trench Dimensions, L x W x H, ft:
42 x 4 x 3
e.
Perforated Pipe Diameter/Length:
24" O pipe142 ft
f.
Bottom Elevation, FMSL:
30.5
g.
Bypass Weir Elevation, FMSL:
33.5
h.
Permitted Storage Volume, ft3:
281
i.
Type of Soil:
Sand
j.
Expected Infiltration Rate, in/hr:
70
k.
Seasonal High Water Table, FMSL:
28.5
1.
Time to Draw Down, hours:
0.6
M.
Receiving Stream/River Basin:
Bradley Creek 1 Cape Fear
n.
Stream Index Number:
18-87-24-4-(1)
o.
Classification of Water Body:
"SC, HQW"
ll. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. 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 slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, filter media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 040809
4. 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.
5. The facilities shall be constructed as shown on the approved plans. 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.
6. 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
modification may be required for those deviations.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a LAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. 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.
12. 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.
Page 4 of 7

` State Stormwater Management Systems
Permit No. SW8 040809
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, 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. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
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.
3.' 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) having jurisdiction.
4. 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 during normal
business hours 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.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 7t' day of November, 2005.
NORT AROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

t 31 05 05:20P Crises Troutman Tanner
,..-FtAX MEMORANDUM
910-397-2971 P.1
C R I S E R
TROUTMAN
TANNER
rRON(:
RHONDA HALL
DaNid E. Ctiser
COMPANY:
DATE:
NCDENR
October 31, 2005
FAX NUMBER:
TOTAL NO. OF PAGE$ 1INCLJDING COVER:
910-350-2004
2
PHONE NUNMER:
CRISER & TROUTMAN'S PROJECT N:;-VI3F-R:
5359
Rc:
cl-JENT'S IFFERU10E NUuBfiiR
Cape Fear Memorial Hospital
❑ UTRGE\T ❑ FORR-�qF V ❑ PLEAS CONMWNT ❑ PLEASE REPLY ❑ FOR YOUR INFORMATION
O'I'E5;'CO\F1�LE\T�:
Rhonda,
Attached is a cop}- of the calculations I did to double check Don Butler's original numbers. I averaged the storage
over the trcnch width :end detem-iLined au equivalene storage freight. Using that equivalent storage height I deterrrsined
that the drawdo%vn time was 0.57 hours. this agrees with 0.6 hours that is shown in Don Butler's calculations.
If we need to determine the dra«down with a different method please advise. We understand that you will «ate the
permit an November 1, 2005. Can you please fax us a copy of it. Thanks for your help with this project.
\l
V
CRISER TROUTMAN TANNER CONSULTING ENGINEERS
Pose Office Sob: 3-r 27 Vwil;ringtCn, %1C 2&=06 1 3809 Peac:huev Ave. Suite 102 Wilmington, f4C 2S403 p 910.397.2929 '910'397.2971

Oct 31 05 05:21p Criser Troutman Tanner 910-397-2971 p.2
W,TE DESIGN CRISER TROUTMAN TANNER SHEET
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CHECK JOB FOR JOB NO.
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lb l�1rr. T ,4 C R I S E R
RJE I b TROUTMAN
7A N N E R
OCT I 'LUDO
October 10, 2005 BY' - —
Mr. Phil Bevilacqua
City of Wilmington
305 Chestnut Street
Wilmington, NC 28401
Re: Cape Fear Memorial Hospital
Expansion
Dear Phil,
As discussed, I visited the site last Thursday during the rain to evaluate the drainage system.
The drainage system to the south (actually west) is the roof drainage from the old building and
appears to be sized just for the roof drainage. We feel certain that this is why the parking lot
drainage goes to the north (actually east). We recommend that the drainage pipe as proposed
remain in the general area. We are relocating it slightly to avoid any trees as much as possible.
This line is shallow and should be able to be installed with minimal disturbance.
The location of the infiltration area appears to be the most suited area of the immediate site. We
recommend leaving it as designed. We are relocating the 6-inch PVC drain line. Now we will
have the line come out of the southern side of the structure and go to the infiltration area. This
will avoid running a second line between all the trees. The new location misses all the major
trees. This will help prevent damage to the trees in the area.
As you know we have been trying to get a permit for some time so you expeditious review is
appreciated. Rhonda Hall with NCDENR is waiting on your approval to write the state permit.
She can be reached at 796-7401.
Thank you for your assistance in this matter.
Sincerely yours,
Criser Troutman Tanner
Consulting Engineers
Z
David E. Criser, P.E.
President
-------------------------------------
Cc: Rhonda. Hallow/ 3-copies.of revisedArawing C=1-]I
Bruce Bowman w/ I copy of revised drawing C-1
CRISER TROUTMAN TANNER CONSULTING ENGINEERS
P,O. Box 3727 Wilmington, NC 28406 1 3809 Peachtree Ave. Suite 102 Wilmington, NC 28403 p 910.397.2929 1910.397.2971 citengineering.com

TRANSMITTAL LETTER
TO: Division of Water Quality
127 Cardinal Dr. Ext.
Wilmington, NC 28405
ATTN: Linda Lewis
WE TRANSMIT THE FOLLOWING:
l7X
DATE: August/ ' 21X9 FILE #: 5359
JOB: Cape Fear Hospital 2IbM
COPIES
DATE
SHEET
NO.
DESCRIPTION
REMARKS
2
Plans
Cape Fear Hospital
2
Specs, soils report, calculations
2
Permit
I
Check for review
ADDITIONAL REMARKS:
The owners did not have the old permit form. I believe there is an existing system
that may have been permitted years ago. This project is for an addition to the building
and its area is considered a stand-alone project, to collect all the runoff for treatment.
CRISER & TROUTMAN
CONSULTING ENGINEERS
P. O. BOX 3727 $ 3809 PEACHTREE AVE., SUITE 102
WILMINGTON, NORTH CAROLINA 28406
[phone] Fax [phone]
BY: 'k/
DONALD R. BUTLER, PE

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CONTRACT DOCUMENTS AND SPECIFICATIONS
raraii�a+.
.r `� rrrr•F
Cape Fear Memorial Hospital
Wilmington, NC
July 2004
6-:1 9-af-,
CRISER & TROUTMAN CONSULTING ENGINEERS
3809 PEACHTREE AVENUE, SUITE 102 • BOX 3727 • WILMINGTON, NC 28406
[phone] FAX (910) 397-

DIVISION 2 - SITE WORK
SECTION 02724 - DRAINAGE PIPE
GENERAL REQUIREMENTS:
The work includes all materials. labor, equipment and plant necessary to reconstruct or relay
all storm drain lines. structures and appurtenances where shown on the plans or as may be
disturbed during construction.
2. MATERIALS:
Concrete pipe for use as storm drain pipe shall conform to the requirements of ASTM C-76.
latest edition, Class III. with resilient prefabricated "push" joints. Where existing lines are
disturbed, those materials which are reusable may be used in restoration. Where pipe is
reusable. joints will be made with bituminous joint material or by use of cement mortar diaper
joint.
I LAYING DRAIN PIPE:
A. Drain lines shall be laid to line and grade as established by the Engineer, where shown
on the plans, or as directed. All pipe lines and structures will be constructed by the use
of competent workmen under the supervision of experienced foremen to the end that a
satisfactory workmanlike job can be accomplished. Great care shall be taken to obtain
well aligned and tight pipe lines so as to assure good flow and the exclusion, insofar as
is possible of all infiltration by ground water.
B. Laying Pipe Drains: Only proper and suitable tools and appliances for the safe and
convenient handling and laying; of pipes and fittings shall be used. Pipe and Fittings shall
be carefuliv handled and lowered into the trench. The ends of pipe shall abut against
each other in such manner that there shall be no shoulder or unevenness of any kind
along the inside of the bottom half of the pipeline.
C. Special care shall be taken to insure that the pipes are well bedded on a solid foundation,
and no pipe shall be brought into position until the preceding length has been thoroughly
embedded and secured in place.
D. Whenever a pipe requires cutting to fit into the fine or to bring it to the required location_
the work shall be done in a satisfactory manner, so as to leave a smooth end, and without
extra compensation.
4. INTLETS AND MANHOLES:
A. All lines entering structures shall be placed upon the concrete slab prior to beginning any
(7/19/94) DRAINAGE PIPE 02 724-1

brick work. The masonry work shall be brought up snugly around such lines and a tight
connection made so as to preclude any washout and cavities at the basin.
B. The brick walls shall be. constructed of concrete block or flood hard burned common
brick in the manner as shown on the plans, furring in as necessary to meet the casing
specified. Brick and mortar shall be specified under Section 04200, Masonry.
C. Prefabricated manhole structures must receive prior approval before installation.
5. REPAIR OF EXISTING MANHOLES:
Whenever a pipe is passed through an existing manhole, entrance and exit area shall be sealed
with a cement compound similar to Embeco 153 Grout by Master Builders, Protobond ET- I 80
by Protex or equal.
6. EXCAVATION AND BACKFILL:
Excavation and backfill shall be in accordance with Section 02200, Earthwork.
7. PAYMENT:
No separate payment will be made for items in this section and all costs shall be included in
the pipe line unit prices or lump sum as shmvii in the Proposal.
END OF SECTION 02724
(7/I9/94) DiZAINAGE PIPE 02724-2

MEMORANDUM
DIVISION OF WATER QUALITY
TO: File
FROM: Rhonda Hall
DATE: 11 /03/04
PROJECT NAME: O. R. Sterile Storage — Cape Fear Hospital
PROJECT NO.: SW8 040809
V\
COUNTY: NewXanover
Talked to Don Butler via phone on November 3, 2004. I requested a site plan that
identified the existing building that the roof is being extended on. The site plan
also needs to identify where existing infiltration basin are and any impervious
area that existed prior to 1988.
RSS/rbh: S:1WQSISTORMWATIMEMOS1040809.nov04