20110089 Ver 3_More Info Received_20170626

Graw-
TO: Division of Water Resources
450 W. Hanes Mill Rd., Suite 300
Winston Salem, NC 27105
WE ARE SENDING YOU:
'r
I
LETTER OF TRANSMITTAL
Date: June 21, 2017
Attention: Sue Homewood
RE: Airlie Industrial Park (Phase 1)
DWQ# 11-0089
NC Department of
Environmental Quality
Received
JUN 2 6 2017
alem
Winston-S
AS REQUESTED DRAWINGS BY UNITED PARCEL SERVICE
X FOR YOUR REVIEW PRINTS BY US MAIL
FOR YOUR INFORMATION CHANGE ORDER Hand Delivered
THE FOLLOWING ITEMS:
COPIES
DATED
DESCRIPTION'
1
Full size plan sheet
Supplement Forms
REMARKS:
Since this project falls within the overall approval for Airlie Industrial Park (Phase 1), we were instructed by
Mr. Alan Johnson that there is no application needed or fee. The prior approval # is referenced above. If
additional information is needed, please do not hesitate to contact me.
Thank you.
SENDER:

(to be provided by DWQ)
OF W A T�c9
A&
0 O�
y r
NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section 111) and the I&M Agreement (Section IV)
I .'PROJECT INFORMATIQN
Project name Airlie Park Spec Building (Lincoln County DWQ #11-0089)
Contact name David Lutz
Phone number
Date
Drainage area number
Site Characteristics
Drainage area (AD)
Impervious area
% Impervious (IA)
Design rainfall depth (RD)
Peak Flow Calculations
1 -yr, 24 -hr runoff depth
1 -yr, 24 -hr intensity
Pre -development 1 -yr, 24 -hr runoff
Post -development 1 -yr, 24 -hr runoff
Pre/Post 1 -yr, 24 -hr peak control
Storage Volume
Design volume (WQV)
Adjusted water quality volume (WQVAdi)
Volume contained in the sedimentation basin and on top of the sand filter
Top of sand filter/grate elevation
Weir elevation (between chambers)
Maximum head on the sedimentation basin and sand filter (hMmFilter)
Average head on the sedimentation basin and sand filter (hA)
Runoff Coefficient (Rv)
Type of Sand Filter
Open sand filter?
SHWT elevation
Bottom of the sand filter elevation
Clearance (dSHWr)
Closed/pre-cast sand filter?
SHWT elevation
Bottom of the sand filter elevation
Clearance (dsHwT)
If this is a closed, underground closed sand filter: The clearance between
the surface of the sand filter and the bottom of the roof of the underground
structure (dsp... )
704-489-1500
May 20, 2015
2'
157,440.00 ft' OK
78,800.00 ft'
50.1% %
1.00 in
2.92
- in
0;12
' in/hr
0.09
ft3/sec
0.22
ft3/sec
0.13
ft3/sec
61552.00 ft3
4,914.00 ft3
4,997.40 ft3 OK
777 ft amsl
778.5 ft amsl
2.58 ft OK
1.29 ft OK
0.50 (unitless)
Y" YorN
768.00 ft amsl
775.50 ft amsl
7.5+
N/A YorN
ft amsl
ft amsl
N/A ft
Form SW401-Sand Filter-Rev.5 2009Sept17 Parts I and II. Project Design Summary, Page 1 of 2

Sedimentation Basin
Surface area of sedimentation basin (As)
Sedimentation basin/chamber depth
Sand Filter
Surface area of sand filter (Ar)
Top of sand media filter bed elevation
Bottom of sand media filter bed/drain elevation
Depth of the sand media filter bed (dF)
Coefficient of permeability for the sand filter (k)
Outlet diameter
Outlet discharge/flowrate
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Is an off-line flow -splitting device used?
If draining to SA waters: Does volume in excess of the design volume flow
evenly distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
If not a closed bottom, is BMP located at least 1 00f from water supply wells?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamber/forebay (Wsed)?
What is the depth of sand over the outlet pipe (dpipe)?
(to be provided by DWQ)
952.00
Ur\. IVICCW IIIIIIIIIIUIII, UUL HWY IICCu lU UC IIIUICdLCU W
ft2
......1..;.. il...............J ....I....,... ;t ............J... 04...---
2.58 ft
952.00
II IUICdJC QUI IQUC c1ICd. I IIIA VV III QIJU IIIUMMU UIC
ft2
......L......1....M;lii.. L........l..l.. LL......J;. �..i...J .....L... ......II{..
777.00 ft amsl
OK
775.50 ft ams]
YorN
1.50 ft
Y
3.50 (ft/day)
OK
6.00 in
YorN
3.56 ft3/sec
0.50 hours
OK. Submit drainage calculations.
0.02 days
Y YorN OK
N YorN Insufficient flow splitter.
NIA
Y or N
Enter Data
ft
YorN
Y
YorN
OK
Y
YorN
OK
Y
YorN
OK
y
YorN
OK
30.00 ft OK
1.50 ft OK
Form SW401-Sand Filter-Rev.5 2009Sept17 Parts I and II. Project Design Summary, Page 2 of 2

(to be provided by DWQ)
OF 11A TF,,,
O� 6
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section Ill) and the I&M Agreement (Section IV)
L . PROJECT,INFORMATION
.r.
Project name Airlie Park Spec. Building (Lincoln County DWQ #11-0089)
Contact name David Lutz
Phone number 704-489=1500
Date
Drainage area number
May 20, 2015
1
II,,DESfGN'.INFORMATION.
2.92 in
Site Characteristics
0.12 in/hr
Drainage area (AD)
57,200.00 ft' OK
Impervious area
18,990.00 ft2
% Impervious (IA)
33.2%%
Design rainfall depth (RD)
1.00 in
Peak Flow Calculations
1 -yr, 24 -hr runoff depth
2.92 in
1 -yr, 24 -hr intensity
0.12 in/hr
Pre -development 1 -yr, 24 -hr runoff
0.03. ft3/sec
Post -development 1 -yr, 24 -hr runoff
0.08 ft3/sec
Pre/Post 1 -yr, 24 -hr peak control
0.05 ft3/sec
Storage Volume
ft ams]
Design volume (WQV)
1,700.00 ft'
Adjusted water quality volume (WQVAdi)
1,275.00 ft' OK
Volume contained in the sedimentation basin and on top of the sand filter
2,162.00 ft3
Top of sand filter/grate elevation
772 ` ft amsl
Weir elevation (between chambers)
773.5 ft amsl
Maximum head on the sedimentation basin and sand filter (hMaxRer)
2.00 ft OK
Average head on the sedimentation basin and sand filter (hA)
1.00 ft OK
Runoff Coefficient (Rv)
0.35 (unitless)
Type of Sand Filter
Open sand filter?
'Y " Y or N
SHWT elevation
765.30 ft ams]
Bottom of the sand filter elevation
770.50 ft amsl
Clearance (dsHwT)
4.8+
Closed/pre-cast sand filter?
N/A Y or N
SHWT elevation
ft ams]
Bottom of the sand filter elevation
ft amsl
Clearance (dSHwT)
If this is a closed, underground closed sand filter; The clearance between
the surface of the sand filter and the bottom of the roof of the underground
N/A ft
structure (dsp,.)
IVC Department of
Environmental Quality
Received ,;f;,
t D
JUN 2 6 2017
Winston-Salem
,i
Regional ®ffice
Form SW401-Sand Filter-Rev.5 2009Sept17 Parts I and 11. Project Design Summary, Page 1 of 2

Sedimentation Basin
Surface area of sedimentation basin (As)
Sedimentation basin/chamber depth
Sand Filter
Surface area of sand filter (AF)
Top of sand media filter bed elevation
Bottom of sand media filter bed/drain elevation
Depth of the sand media filter bed (dF)
Coefficient of permeability for the sand filter (k)
Outlet diameter
Outlet discharge/flowrate
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Is an off-line flow -splitting device used?
If draining to SA waters: Does volume in excess of the design volume flow
evenly distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
If not a closed bottom, is BMP located at least 100ft from water supply wells?
Are the vegetated side slopes equal to or less than 3;1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamber/forebay (WSed)?
What is the depth of sand over the outlet pipe (dpipe)?
(to be provided by DWQ)
Y YorN OK
N YorN Insufficient flow splitter,
N/A
VI\. IVICCLJ IIIIIIIIIIUIII, UUL Illdy IMM LU UC IIIUII7dbCU LV
253.00 ft2
......I...i.. LL.........,.�....J ....I�,..�... if ........ .,.. d... C+L...---
2.00 ft
253.00. ft'
IIIUWCIWW QUI IQUtl dlCd. I IIID WIII CIIDV II IUItldbC II IC
.., ...t...,,.i....l.:ll7.. i........l..l.. ll......II�...a...I ,....L... ......Ill,.
772.00 ft amsl
OK
770.50 ft amsl
YorN
1.50 ft
Y
3.50 (ftlday)
OK
6,00 in
YorN
0.77: ft3/sec
1.00 hours
OK. Submit drainage calculations.
0.04 days
1.50 It
Y YorN OK
N YorN Insufficient flow splitter,
N/A
YorN
Enter Data
ft
YorN
Y
Y or N
OK
Y
YorN
OK
Y
YorN
OK
y
YorN
OK
16.00 It
OK
1.50 It
OK
Form SW401-Sand Filter-Rev.5 2009Sept17 Parts I and II. Project Design Summary, Page 2 of 2

AIRLIE PARK PHASE I
SAND FILTER #1
DA=57,200 SF=1.31 AC
Impervious =18,990 SF = 0.44 AC
C = 0.34
WQv = (0.05 + 0.9(0.34)) * 1.31 * 43560 * 1 * 1/12 = 1,700 CF
WQv adj = WQv *.75 = 1,275 CF
As min =(240*Rv*Ad)Rd=(240*0.356*1.31)*1=112 SF
Af min = ((WQv * dF) / (1<* t * (hA + df))) = ((1700 * 1.5) / (3.5 * 1.66 * (1.5 + 1.5))) = 146.3
WQv adj As + Af
Hmax = 3' 1,275 428
As = 214 sf
As proposed = 253 sf
DA =157,440 SF = 3.61 AC
Impervious = 78,800 SF =1.81 AC
C = 0.50
Af = 214 sf
Af proposed = 253 sf
SAND FILTER #2
WQv = (0.05 + 0.9(0.5)) * 3.61 * 43560 * 1 * 1/12 = 6,552 CF
WQv a dj = WQv * .75 = 4,914 CF
As min =(240*Rv*Ad)Rd=(240*0.5*3.61)*1=433 SF
Af min = ((WQv * dF) / (I<* t * (hA + df))) = ((4,914 * 1.5) / (3.5 * 1.66 * (1.5 + 1.5))) = 422 SF
WQv adj As + Af
Hmax = 2.58' 4,914 1,904
As = 952 sf Af = 952 sf
As proposed = 952 sf Af proposed = 952 sf

GRADING AND DRAINAGE NOTES:
EARTHWORK QUANTITIES HAVE BEEN ESTIMATED AND SITE AS SHOWN IS ASSUMED TO REPRESENT A BALANCED 13. ALL PROPOSED CONTOURS IN ALL "FILL" AREAS SHOWN ON THIS PLAN REPRESENT COMPACTED STRUCTURAL FILL
NOTE: PROVIDE 4" CLEANOUTS FOR
SAND FILTER UNDERDRAIN SYSTEM
EVERY 50 -FT AND ALL BENDS
FILTER FABRIC
CUT / FILL CONDITION. PROJECT OBJECTIVE IS TO GRADE AS MUCH OF FUTURE ADDITION AS MATERIAL
AND SHALL BE CONSTRUCTED WITH SATISFACTORY MATERIAL COMPACTED TO THE STANDARDS OUTLINED IN THE
(CLEAN WASHED
ALLOWS.
SPECIFICATIONS.
2.
CONTRACTOR SHALL PERFORM HIS OWN ESTIMATE AND SHALL PROVIDE ALL EARTHWORK NECESSARY TO
14. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN
FILTER FABRIC
ACHIEVE THE DESIGN GRADE, INCLUDING ANY OFFSITE BORROW OR SPOILS REQUIRED.
ADDITION TO OTHER APPLICABLE CRITERIA AND SPECIFICATIONS:
WITH NORTH
1.5' OF CLEAN
14.1 NO MORE THAN 500 LF OF TRENCH MAY BE OPENED AT ONE TIME.
3.
CONTRACTOR SHALL PROVIDE POSITIVE DRAINAGE IN ALL GRADED AREAS, INCLUDING PAVING, LAWN AND
14.2 EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES.
OR APPROVED EQUAL.
LANDSCAPE AREAS.
14.3 EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED
FILTER FABRIC
SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT VIOLATE EROSION
4.
THE CONTRACTOR SHALL IMMEDIATELY REPORT TO THE OWNER ANY DISCREPANCIES FOUND BETWEEN ACTUAL
AND SEDIMENT CONTROL LAW OR ADVERSELY AFFECT FLOWING STREAMS OR OFF-SITE PROPERTY.
UNDERDRAIN
FIELD CONDITIONS AND CONSTRUCTION DOCUMENTS AND SHALL WAIT FOR INSTRUCTIONS PRIOR TO
14.4 MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE COMPACTED PER THE SPECIFICATIONS.
AMERICAN
PROCEEDING.
14.5 APPLICABLE SAFETY REGULATIONS SHALL BE FOLLOWED, AND ARE THE SOLE RESPONSIBILITY OF THE
TURF R
- Provide 95% Compaction
CONTRACTOR TO IMPLEMENT.
5.
CONTRACTOR SHALL VERIFY LOCATION OF ALL UNDERGROUND UTILITIES PRIOR TO BEGINNING WORK, BOTH
have 8 -inch perforations,
spaced at 6" centers, with a minimum of 4 -holes
PUBLIC AND PRIVATE. CONTRACTOR IS FULLY RESPONSIBLE FOR ALL UNDERGROUND UTILITIES AND SHALL
must have 0.5 % slope min.
Underdrain may be HDPE
REPAIR ANY DAMAGE AS A RESULT OF THIS CONTRACT.
- Underdrain pipe shall be
6.
CONTRACTOR SHALL BLEND NEW EARTHWORK SMOOTHLY TO TRANSITION BACK TO EXISTING GRADE.
above Filter Media
7.
THE PROPOSED CONTOURS AND SPOT ELEVATIONS SHOWN IN DRIVES, PARKING LOTS AND SIDEWALKS ARE
NOTE: Drainage Area must
be stabilized prior to filtration controls and filter
FINISHED ELEVATIONS INCLUDING ASPHALT. REFER TO PAVEMENT CROSS SECTION DATA TO ESTABLISH
brought online.
SAND
CORRECT SUBBASE OR AGGREGATE BASE COURSE ELEVATIONS TO BE COMPLETED UNDER THIS CONTRACT.
N.T.S.
8.
ALL "STD." NUMBERS REFER TO THE (AGENCY) DEVELOPMENT STANDARDS.
M H 2
9.
ON-SITE BURIAL PITS REQUIRE AN ON-SITE DEMOLITION LANDFILL PERMIT FROM THE ZONING ADMINISTRATOR.
10.
MAXIMUM CROSS SLOPE OF SIDEWALKS SHALL BE 1/4" /FT.
792
11.
SLOPES SHALL BE GRADED NO STEEPER THAN 2:1. W/ OUT ADDITIONAL STABILIZATION MEASURES AND PRIOR
APPROVAL.
NOTE: CONVERSION OF SKIMMER
12.
APPROVAL OF THIS PLAN IS NOT AN AUTHORIZATION TO GRADE ADJACENT PROPERTIES. WHEN FIELD
BASINS TO SAND FILTERS SHALL NOT
CONDITIONS WARRANT OFF-SITE GRADING, PERMISSION MUST BE OBTAINED FROM THE AFFECTED PROPERTY
OCCUR UNTIL SITE CONSTRUCTION
3
OWNERS.
ACTIVITIES ARE COMPLETED AND
GROUNDCOVER IS FULLY STABILIZED.
NOTE: PROVIDE 4" CLEANOUTS FOR
SAND FILTER UNDERDRAIN SYSTEM
EVERY 50 -FT AND ALL BENDS
FILTER FABRIC
1" DEBRIS SCREEN
AROUND
(CLEAN WASHED
PERIMETER &
STONE)
BOTTOM
WEIR EARTHEN
BERM.
FILTER FABRIC
1.5'
SAND FILTER
WITH NORTH
1.5' OF CLEAN
GREEN P300
WASHED
TURF REMENT
CONCRETE SAND
OR APPROVED EQUAL.
ASTM -C33
OF WEIR
FILTER FABRIC
6" GRAVEL LAYER
COMPACTED EARTH/
6" PERFORATED
EMERGENCY
UNDERDRAIN
LINE
WRAPPED IN
AMERICAN
FILTER FABRIC
DETAILS:
TURF R
- Provide 95% Compaction
OR APPROVED EQUAL.
- Underdrain shall be 6" perforated
PVC pipe in a 12" gravel layer. Pipe shall
have 8 -inch perforations,
spaced at 6" centers, with a minimum of 4 -holes
per row. Perforated pipe
must have 0.5 % slope min.
Underdrain may be HDPE
(AASHTO M252)
- Underdrain pipe shall be
wrapped with filter fabric
- Cleanouts shall extend 6"
above Filter Media
- Minimum of 12" of filter
media over drainage pipe.
NOTE: Drainage Area must
be stabilized prior to filtration controls and filter
media being installed and
brought online.
SAND
FILTER MEDIA
N.T.S.
STM
1.65' SF #2
COMPACTED SOIL
3:1 SIDE SLOPE
SECTION A -A
Copyright 2015 CES Group Engineers, LLP
1.5' SIF #1
SAND FILTER
NOTES:
Line Size
Slope
Invert In
Invert Out
1. OVERFLOW
WEIR EARTHEN
BERM.
EMERGENCY
SPILLWA(FORCEMENT
E LIN
WITH NORTH
AMERICAN
GREEN P300
PERMANENT
TURF REMENT
MAT,
OR APPROVED EQUAL.
5'Wx3O'L. TOP
OF WEIR
ELEVATI4'.
2. OVERFLOW
WEIR EARTHEN
BERM.
EMERGENCY
SPILLWE
LINE
WITH NORTH
AMERICAN
GREEN P300
PERMANENT
TURF R
AT,
OR APPROVED EQUAL.
12'Wx17'L.
TOP OF WEIR
ELEVAT79.58'
MH 1
Inlet ID
Length
Line Size
Slope
Invert In
Invert Out
Rim Elev
Material
PIPE
09.25.14
(ft)
(in.)
(%)
(ft)
(ft)
(ft)
Class
FES1
772
772
73.5
15
5
RCP -3
STM
1
MH 1
780.5
775.68
783.5
39
15
5.13
RCP -3
STM
2
M H 2
789
782.5
792
90
15
1
RCP -3
STM
3
CI 1
791.25
800.8
FES 2
777
777
64
24
2
RCP -3
STM
4
MH 3
786
780.1
789
28
24
3
RCP -3
STM
5
DCI 1
1
1 787.4 1
796.6
o
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_ I-AAREMAINDER OF TRACT #1 3:1 MAX. I �; III ► d � \\ �` 1 1 SIDE SLOPES
X66 I P 2A BI10 0'IK ;1 6 ;1 2; I i
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-�------------- _ MH 2 S' 8 a' 12'50/"E ' 558.52 ' _ --- --
I I
' -dVE FLOW WEIR ----r----- --- ---- - ---- - ---
\IVINSTONE SIZE=0.5' MH YD �_ - --- DD
_ ADD - -----
-------------- -- --- - _ Cl 1 - DDS -- ------
------- -
6" OLID PVC SSM 1
-----------
t-----
;\SAND FILTER 253 -SF /
STM 3
TC: 802.4'
C 801.9' T 802.4' TC: 8012.4' N
FOREBAY \ 01.9BC: 801.9' cc)
_-34LF OF 6" r
ARFQRATED PVC '
NTH CLEAN OUTS \ V_ l� � -�� .,�. - IS �1� x
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LAIC\ BOOK 1,6 167 I �
I
I
\ I I
UTURE BUILDING( ( w PROPOSED BUILDING
a 50, 000 SF
I 1 ADDITION O I ,
0
crP li �� I o 0 50,000 -SF 11 ci I FFE=802.50' I
LL.
I Q7 I I 0RD
I I ,• I
cc -
II �� �(0 I I I I I
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I I I
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00 1 C \ I I
SAND FILTER #2 f
,' II DRAINAGE LIMITS
I
(�' I FOREPAY (952
II p� 00 7S8.
I Il 58LF OF 5 -
:]ERF
ORATIED
"gE?FORATED PVC
® rI OUTS
7,3 p I/
1 I
SANG FILTER --952 SF / _ 1I
16 FES 2 I 1�
I
1 I
I T 11
SF '11 1
1 ELEV: 775' 1 774 /
SF 2 ELEV: 780' I 1, s" soup PVC � d
44 -LF 1 STM 4
7j 1 ---L__ 1 MH 3 I 1
I
WOOO_U_
STM 5 DCI 1 I 1
� -�----+_I -.
SF 1 ELEV: 772 � I 'I,� �---- .._,__ i -i-----___-_ !/
SF 2 ELEV: 777' I OVERFLOW V0.5' --_--_x__20 SIDE -_-_- 800
� I MIN. STONE SIZE=0.5 I---___,1�
I
SAND FILTER NOTE 2 / N 82°28 / ------ __ \
% 1,2 W 5 - -__ WOODED --� --80
IRIPRAP OUTFALL R E M A N 2/ E R / -__
SEE SHEET C9 ---
P N 4622-206
2203/541
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2 BUSINESS DAYS BEFORE DIGGING
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REVISIONS
NO:
ISSUE:
DATE:
1
ADDED STORM
09.16.14
2
REVISED STORM
09.25.14
3
SAND FILTER
09.26.14
4
SAND FILTER
05.21.15
O
a°
J W
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a, :3
IL to Ul 0
OW •U
0�W Z
19 Z I EIIF
W
NL Z
L3WN0
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U
LLJ U
2 Z
0
Z Z
0
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� W W
L-31
U
F -
w
0
OIL:Cl- Q
DRAWN BY.-
DPW
Y.DPW
CHECKED BY:
DSL
PROJECT NO:
6583.0414CD
COMMENTS:
DATE APPROVED:
1
SCALE: 50
DRAWING TITLE:
GRADING PLAN
DRAWING NUMBER: