SW8051217_HISTORICAL FILE_20070403

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 O15 1
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
L�l HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
200-1 CUyo3
YYYYMMDD

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April 3, 2007
Eddie Anderson, Director of Facilities
New Hanover County Schools
6410 Carolina Beach Road
Wilmington, NC 28412
Subject: Approved Plan Revision
Odgen Elementary School
Stormwater Project No. SW8 051217
New Hanover County
Dear Mr. Anderson:
M ichacl F. Easley, Govemor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.G. Director
Division of Water Quality
On March 26, 2007, the Wilmington Regional Office received a plan revision for Stormwater
Management Permit Number SW8 051217. The revisions include changes to the roof drain
collection system. The changes do not affect the permitted drainage areas. It has been
determined that a formal permit modification is not required for the proposed changes. We are
forwarding you an approved copy of the revised plans for your files. Please replace the old
approved plan sheet with the new one.
Please be aware that all terms and conditions of the permit issued on February 13, 2006,
remain in full force and effect. Please also understand that the approval of this revision to
the approved plans for the subject State Stormwater Permit is done on a case -by -case
basis. Any other changes to this project must be approved through this Office prior to
construction. The issuance of this plan revision does not preclude the permittee from
complying with all other applicable statutes, rules, regulations or ordinances which may
have jurisdiction over the proposed activity, and obtaining a permit or approval prior to
construction.
If you have any questions concerning this matter, please do not hesitate to call me at (910)
796-7335.
Sincerely,
Linda Lewis
Environmental Engineer III
ENB\arl: S:\WQS\STORMWATER\PERMIT\051217PR.apr07
cc: Glenn Medlin, CLH Design
Beth Wetherill, New Hanover County Engineering
Tony Roberts, New Hanover County Building Inspections
Linda Lewis
CWilmington-Regional=Office
Central Files
N''ott���hCarolina
Yalturnt/y
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone [phone] Customer Service
Wilmington Regional Office IntemeC www.ncwateraualilv.ore Fax [phone] I-877-623-6748
An Equal Opportunity/Affirmative Action Employer — 50% Recycledl70% Post Consumer Paper

CLH design, p.a.
MeeGregor Perk, 125 Edinburgh South, Suite 310
Cmy, North Cet olive 27511
Phone: [phone] Fex: (919) 319-7,516
Ezneib clhdesigaoclhdeslgnpe.com
LETTER OF TRANSMITTAL 23-Mar-07
To: Linda Lewis- Application No. SW8 051217
Company: NCDENR Water Quality Section
Address: 127 Cardinal Drive
City, State Zip: Wilmington, NC 28405
Phone: [phone]
Fax: [phone]
Method: UPS Ground
Subject: Ogden Elementary School CLH Project Number: 1217
® Prints ❑ Originals ❑ Specifications ❑ Applications
❑ Reports ❑ Copy of Letter ❑ Submittals ❑ Other:
We are sending you the following items
No. of Copies Date Description
• 2 Revised courtyard area - full size
Additional Remarks:
Linda,
Enclosed are the additional sheets as requested. FMAR
Please call me at [phone] if you have any questions. 2 6 2007
Thank you,
i
Signed
J. Glenn Medlin
cc: File
1217-Permit

CLIP design, p.a.
Mac6regor Farb; 125 Edinburgh South, Suite 310
Carx, North Carolina 27511
(hone: [phone] Fax: [phone]
Email• clhdesignoclhdesignpa.com
LETTER OF TRANSMITTAL
To: Linda Lewis- Application No. SW8 051217
Company: NCDENR Water Quality Section
Address: 127 Cardinal Drive
City, State Zip: Wilmington, NC 28405
Phone: [phone]
Fax: [phone]
22-Jan-07
Method: UPS Ground
Subject: Ogden Elementary School CLH Project Number: 1217
E Prints ❑ Originals ❑ Specifications ❑ Applications
❑ Reports ❑ Copy of Letter ❑ Submittals ❑ Other:
We are sending you the following items:
No. of Copies Date Description
0 2 Revised courtyard area - full size
0
0
•
•
•
Additional Remarks:
Linda,
Enclosed are the additional sheets as requested. There are no other sheets affected by these revisions.
Please call me at [phone] if you have any questions.
Thank you,
Signed �4 N rL-
J. Glenn Medlin
cc: File
1217-CAI
RECEIVED
JAN 2 3 2007
DWQ

Re: Ogden ES Roof Drain Revision Status
Subject: Re: Ogden ES Roof Drain Revision Status
From: Linda Lewis <[e-mail]> 0 1 v
Date: Mon, 22 Jan 2007 08:26:23 -0500
To: Glenn Medlin <[e-mail]>
Glenn:
Yes, I received the revised plan, and it appears that this is not a permit
modification, but will require a plan revision. Please submit another copy of sheet
C3.1 and two copies of any other plan sheets affected by these changes. The
Division will review them and issue a "Plan Revision Approval Letter".
Linda
Glenn Medlin wrote:
Linda,
Good afternoon. I was on -site Monday and the Contractor was asking me about the
status of the.roof drain revisions at Ogden ES. Did you receive the full size
plan sheets? Where do we stand on that issue?
Thank you again for your assistance with this matter
questions, please feel free to call.
Glenn Medlin
**CLH Design P.A.**
125 Edinburgh South - Suite 310
Cary, NC 27511
Phone: [phone]
Fax: [phone]
If there are any
gmedlin®clhdesignpa.com<mailto:[e-mail]>
I of 1 1/22/2007 8:26 AM

Re: Ogden ES Stormwater Revisions
e .-%
Subject: Re: Ogden ES Stormwater Revisions
From: Linda Lewis <[e-mail]>
Date: Thu, 04 Jan 2007 12:29:48 -0500
To: Glenn Medlin <[e-mail]>
Glenn:
It's not so much the changes in the piping that are of concern, but 'rather, where
all the runoff ends up. The stormwater permit requires all of that runoff to be
directed into one of the permitted infiltration basins. If the proposed changes to
the piping will alter the drainage areas for the infiltration basins, (i.e., how
does the re-routing of the proposed drain leaders to daylight outside of the
courtyard area affect their ultimate destination?) you will need to submit a permit
modification.
Please keep in mind that no runoff can bypass the permitted systems. I am unable to
tell from the plan submitted if this is occurring or not. To be safe, please submit
a full size drawing for comparison to the permitted plans so that I can make a more
informed decision regarding the need for a modification or a plan revision.
Linda
Glenn Medlin wrote:
Linda,
I am working with Renee Scott on the Ogden ES project. The attached sketch
shows potential revisions to the roof drain leaders and culvert pipe in the
courtyard area. The original plans showed a larger culvert pipe and a few more
roof drain outlets daylighting into the courtyard. This project is currently
under construction and while the final grades are not achieved, yet, there have
been some occurrances of standing water against the building in the courtyard
area after heavy rainfalls. The Owner and Architect are concerned of the
possibility of flooding the building during heavy rainfalls. In the proposed
solution, we re-routed some roof drain leaders to daylight outside of the
courtyard. This decreased the amount of water draining to the courtyard and
allowed us to reduce the size of the culvert pipe. The reduction in pipe size
allowed us to lower the grades above the pipe, which lowered the surface
'outlet' of the area, and hopefully will allow for better drainage away from the
building.
I understand that no storm pipes were permitted during the original design and
that the culvert in question was discussed several times. Please review the
proposed solution. If approved, we will issue bulletin drawing to the
Contractor.
Thank you for your assitance with this matter. If there are any questions,
please feel free to call.
Glenn Medlin
*CLH Design P.A.*
125 Edinburgh South - Suite 310
Cary, NC 27511
Phone: [phone]
Fax: [phone]
[e-mail]<mailto:[e-mail]>
1 of 1 1/4/2007 12:38 PM

4\
FLUME
24
— 000
(2) 4'Lx3'Wxl2"
'A' STONE, SEE
Fit v�
for;Ilk
3�
1 - OUTLET PROTECTIO
>: 4'Lx3'Wx12" CLASS
'A' STONE. SEE DE
T 0.- / - ❑ SHEET C7. 1. 3
0
PROPOSED BUILDING
FFE= 33.60'
DRAINAGE
STRUCTURE
SCHEDULE
STRUCTURE NO
PIPE
PIPE
PIPE
PIPE
UPPER
LONER
UPSTREAM STRUCTURE DATA
NOTES
UP STRM
ON SIRM
SLOPE
DIA
MG_
MATRL
INV.
INV,
TOP ELEV. DEPTH
TYPE
(SEE BELON)
(IN)
IF
(ET)
(TT)
(PT) (I) (ET)
A7
A2
0.3 UZI 30
ApVCO
31.10
37.00
- - FES
B1
B2
0.667 18 736
Ap VCO
29.10
28.20
- - FES
C1
C2
7.407 18 114
RCP
26.00
24.40
- - FES
D1
02
0.709 15 86
A20C
27.60
27.00
_ 30.50 2.90
REVISE ROOF DRAIN CONNECTIONS AND GRADES AS INDICATED.
SCALE 1"=40'
Ogden
Elementary
School
Replacement
3637 Meddl. SU RUC
DEC St. X
POST BID
aAROC n W
SLOPE AND BERM
GRADE REVISION