SW8060302_COMPLIANCE_20060420

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW SW&(1��
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

INFILTRATION TRENCH ANALYSIS
Filename:
S:IWPDATAIWQSIINTRENCH1060302
Project # SW8 060302
Date
20-Apr-06
Project Name Southeastern Nephrology
Reviewer
P.Bartlett
Recvng Stream UT to Greenfield Lake
Classification
C; Sw
Drainage Basin Cape Fear River
Index #
18-76-1
Site Area 1.273 acres
Drainage Area
55,452 SF
1.27 Acres
Impervious Area. Calculation
Buildings 6197
Rational Cc (list C after each BUA)
0.95
Streets... 0
0.95
OS Prkg . 30672.
0.95
OS sidewalks 2292
0.95/��
Total €391C1
% Impervious: 70.6%
Volume/Storage Calculation
If Rational Method is used, place a 1 in this box 0
Cc:
0.69
Required
Design Storm
RV
Volume to Store
Provided
Pipe Diameter
Length Of a Single run of Pipe
Number of Pipe Runs in Trench
Storage In Piping
Total Storage in Piping
Cross -Sectional Area Of Pipe Runs
Length Of Trench
Width Of Trench
Height Of Trench
Cross -Sectional Area Of Trench
Voids Volume, 40%
Total Voids Volume
Total Volume Provided
Elevation Of Bottom Of Trench
Elevation Of SHWT
Overflow Elevation
Exfiltration Rate/Drawdown
Reported Hydraulic Conductivity
Bottom Surface Area
Drawdown Time
25 YEAR 24 HOUR STORM NIA
Intensity, i = .33 inches / hour
Qr=CiA=
Qp through the bottom of the basin=
10 YEAR 10 MIN HIGH INTENSITY EVENT
Intensity, i = 6.3 inches / hour
Volume for 10 yr. 10 min. event =
1 in
0.69
€�!R CF
Pipe Size 9
Pipe Size 2
1
0.5 Feet
112
125 Feet
1
1 each
88
25 Cubic Feet
113: Cubic Feet
0.785
0.196 SF
169.5
85 Feet
25
34.5 Feet
1.17
1.17 Feet
29.25
40.37 SF
7275
21f}$
CF
CF
Cubic Feet
°3284
339fi
0.29 CFS
9.9583 CFS
3322.14 CF <
46.75 Mean Sea Level
44.75 Mean Sea Level
47.92 Mean Sea Level
d V P.v-
5 Cubic Feet Per Hour Per Sq Ft
7170.0 Square Feet
i€p09 hours
Must be > Qr
3396 CF

qk 7) (7, 0 2-�s ` 2
cr

1.1/14/2005 MOil 16.10 FAX [phone] Norris. Kuske, Tunstall g 002/003
Y1-t ED
NKT Project No. 05183
INFILTRATION SITE`.' ISIT;REQ EU ST
Name of the Project: Southeastern Nephrology
Location (attach a clear vicinity map): Comer of Medical Center Drive & Yaupon Drive Q-
1302 Medical Center Drive -
Street address, SR number, community, etc.
Directions from the nearest major intersection: From intersection of 17th Street & Medical
Center Drive. turn onto Medical Center Drive. Site is at the comer of Medical Center Drive
and Yau on Drive.
Owner/Applicant Name: 1302 Properties, PLLC / John M_ Herion, Partner
Consultant Name: Norris Kuske & Tunstall Consulting Engineers, Inc. / Dale Thomflson
Consultant Contact Information: 343--9653 (El 343-9604 (F) dthompson(a-)nkteng com
Phone, fax, email, etc.
#1 #2 #3 #4 #5 #6 #7 #8
Existing ground elev. @basin/trench=
Bottom Elev. of infiltration basin/trench=
Existing ground minus bottom elev.=
Add 2' (max. bottom elevation)=
Datefrime of Soils Investigation : _ 1,6 %O d _
Summary/Comments:
� ', / f
ti� '617 ,
All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench
must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to,
decline to do the investigation. If the proposed infiltration system will be located in an area of existing
pavement and there is no open area nearby, equipment capable of breaking through the impervious
layer must be provided The soils investigation does not take the place of a soils report prepared by
an appropriate professional_ The Soils Scientist will only verify the soil conditions that are reported in
the Soils Report, and make a determination as to the suitability of the site to meet the infiltration
design requirements under NCAC 21-1.1000, and assumes no liability should the system fail.

11/14/2005 )ION 16:10 FAX [phone] Norris. 6uske, Tunstuil
� 003/003
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NORR.IS, KUSKE & TUNSTALL John S. Tunstall, P.E.
Kent P_ Harrell, P.E.
CONSULTING ENGINEERS, INC. Jaynes T. Pyrtle, P.E.
902 Market Street • Wilmington, NC 28401A733 • Phone [phone] •
E-Mail: [e-mail]
LETTER OF TRANSMITTAL
J. Phillip Norris, P.E.
John A. Kuske, III, P-E.
I A Krickp P.E.
[phone]
DEC 0 5 cUuo
To:
�G..
e
Date: O Q 5
Job No. 5�
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Subject: 12cpj6seo
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WE ARE SENDING YOU VIA
❑ ATTACHED El UNDER SEPARATE COVER
❑ SFIOP DRAWINGS ❑ PRINTS ❑ TRACINGS
❑ D1SKS ❑ copY OF LETTERC�k�91
❑
E=AX _TRANSMIT7TALK ¢s NUMBEWN Z: AGES
S.d' .w-.i"'YaTYbi s bSRi
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recelving��hls message�Y 1' ��y3�,�py��' i5`
COPIES
DATE
NO.
DESCRIPTI N
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❑
S REQUESTED
FOR YOUR USE
❑ FOR REVIEW AND COMMENT ❑ FOR APPROVAL
❑ FOR BIDS DUE ❑ YOUR PRINTS LOANED TO US
REMARKS:
CC:a<u;oSIGN % C:
I if 64
CONFIDENTIAL AND PRIVILEGED: Information contained in this document is privileged and confidential, intended for the sole use of the
addressee. If you are not the addressee or the person responsible for delivering it to the addressee you are hereby notified that any dissemination,
distribution or copying of this document is strictly prohibited. If you have received this document in error please immediately notify the sender and
return to the address above.

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INV.- 43.i2 INV.- 44.92 INV.= 4 .79 ° 5D.55 - - ..� r
CL SQ.I1 4n m
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Note: Site plan drawing provided to S&ME by Clancy & Theys Construction Company personnel.
LEGEND SCALE: NOT TO SCALE DOUBLE -RING INFILTROMETER TESTING FIGURE
® Approximate CHECKED BY: PAM SOUTHEAST NEPHROLOGY NUMBER
Infiltrometer MEDICAL CENTER DRIVE
Test Location DRAWN BY: JNS 4t . ENGINEERING TESTING WILMINGTON, NORTH CAROLINA
DATE: 11-16-05 ENVIRONMENTAL SERVICES JOB NUMBER: 1061-05-576D