20200820 Ver 1_More Info Received_20200910

PILOT E NVI RON MENTAL, INC
September 10, 2020
U.S. Army Corps of Engineers
Attn: Mr. David Bailey
Raleigh Regulatory Field Office
Wilmington District U.S. Army Corps of Engineers
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
North Carolina Division of Water Resources
Attn: Ms. Sue Homewood
Winston-Salem Regional Office - 401 Wetlands Unit
450 West Hanes Mill Road
Winston Salem, North Carolina 27105
Reference: Response to USACE Request for Additional Information
Nationwide 404/401 Permit — SAW-2019-01090
Oak Ridge Landing
Oak Ridge Road
Oak Rodge, Guilford County, North Carolina
Pilot Project 3962.2
Dear Mr. Bailey and Ms. Homewood:
Pilot Environmental, Inc. (Pilot) received an electronic mail dated July 9, 2020 from the U.S.
Army Corps of Engineers (USACE) requesting additional information to process the Nationwide
Permit application for the proposed Oak Ridge Landing Subdivision, located south of Oak Ridge
Road in Oak Ridge, Guilford County, North Carolina. The electronic mail indicates that the
USACE received the Nationwide Permit verification request dated June 19, 2020. The purpose
of this letter is to provide the USACE the requested information.
USACE Comment 1): "The Corps completed a field verification of the delineation of wetlands
and other waters of the US yesterday with Pilot Environmental. The updated field sketch is
attached. Please update the "Stormwater Plan" (Sheet 4 of 17) with the overlay of the verified
wetlands and other waters of the US. Although a GPS location of the approved wetland flags,
stream channels, and ponds is acceptable through most of the property, the limits of Wetland
WA/WAA and WD 18-36, and well as Streams ISA and SA in the vicinity of the proposed impact
area must be surveyed by a licensed Land Surveyor. This complete map will allow us the fully
evaluate direct and indirect impacts associated with the proposed project."
Applicant Response: The impact exhibits are attached and have been updated accordingly.
PO Box 128, Kernersville, NC 27285
www.pilotenviro.com

Response to Requestfor USACEAdditional Information
Proposed Oak Ridge Landing Subdivision
September 10, 2020
USACE Comment 2): "Regarding the proposed Falcons Trail stream crossing:
a. Given the very small remnant of stream channel that would remain upstream of
the proposed following construction, the Corps will consider the length of
stream between the origin of Stream ISA and the culvert inlet as an indirect loss
of stream function and include this length in the calculation of stream loss. Based
on QL2 LiDAR and a georeferenced version of your project plans, this length of
stream channel is approximately 16 linear feet;
b. The proposed culvert slope is very steep (>6%); as such, this culvert would not
retain sediment. Further, the stream bed in this location is rocky with several
areas of exposed bedrock. Given the preceding, there is no environmental
benefit to burying the culvert below the stream bed. As such, please confirm
with NCDWR that they are in favor of placing the culvert at grade in this
situation. If agreed, please redesign accordingly and update the PCN and
applicable plan sheets;
C. Based on item b., embedding the rip rap pad in the stream bed is not practicable.
Would it be possible to only rip rap the banks in this case? If not, update the
plans to show the rip rap pad to be placed at/above grade within the stream
channel;
d. During yesterday's field visit, we observed a rock head cut/"waterfall"
approximately 34 in vertical height near the proposed culvert outlet and rip rap
pad, however this feature is not shown on the profile. Please update the profile
drawing accordingly and adjust the proposed crossing to account for this feature
to maintain stability of the stream channel."
Applicant Response: Regarding the proposed Falcons Trail stream crossing:
a. The applicant acknowledges that the additional stream channel is considered an
indirect loss. The additional impact is accounted for in the revised exhibits and
updated Sheet 5 on the PCN application (Attached).
b. Pilot confirmed with Ms. Olivia Munzer with the NC Wildlife Resources
Commission that they are in favor of placing the culvert at grade (e-mail dated
July 20, 2020). The stream crossing has been redesigned accordingly on the
revised exhibits (Attached).
C. The rip rap has been redesigned to only rip rap the banks. The revised exhibits
reflect this change (Attached).
d. The profile drawing has been updated accordingly (Attached).
USACE Comment 3): "The "Stormwater Plan" (Sheet 4 of 17), when overlaid on the wetland
delineation, indicates via lot lines that the only access to upland portions of this lot require
crossing Wetland WD 18-36. Please explain/show how access to this lot will be achieved
without requiring additional impacts to wetlands. Please note that authorization to impact this
wetland for lot access may be difficult to obtain, given the numerous avoidance and

Response to Requestfor USACEAdditional Information
Proposed Oak Ridge Landing Subdivision
September 10, 2020
minimization techniques/methods available to find alternative accesses to this property. Note
also that, based on my site visit, this wetland appears to be a high quality wetland resource."
Applicant Response: Lots 2, 3 and 4 have been redesigned to avoid potential impacts to
Wetland WD 18-36. Please see attached exhibits.
USACE Comment 4): "Please note that several lots include wetland and/or stream resources
within their proposed lot lines, including Lots 2-17, 19, 20, 25, 27, 28, 32, 33, 41-47 (Lot 47 is
bisected by Stream SB)."
NCDEQ-DWR Comment: Based on conversations with Ms. Sue Homewood with the NCDEQ-
DWR, if lots on the site look buildable and contain jurisdictional features and/or surface water
buffers, deed restrictions are required for these lots. Additionally, if there are lots on the site
that don't look buildable then the NCDEQ-DWR will require a lot layout showing structures,
driveways, septic etc.
NC Wildlife Resources Commission Comment (Olivia Munzer): "I am concerned for some of
these features on lots where the feature/buffer takes up a big portion of the lot such as Lot 47,
48, 41, 28 (see Dave's comment #4); My recommendation is for the developer only to clear
trees where absolutely necessary (mostly pad and roads). It would be nice to see a figure with
the features and impacts/basic site plans; I don't see the wetlands on the Stormwater Plan."
Applicant Response: The applicant acknowledges that there are multiple lots that contain
jurisdictional features. The exhibits have been updated and include footprints of proposed
structures showing that the lots are suitable. Additionally, deed restrictions and restrictive
covenants are being used to protect the jurisdictional areas and/or stream buffers on the lots
within the subdivision that contain these features.
USACE Comment 5): "Given the USFWS concerns regarding suitable Schweinitz's sunflower
and small whorled pogonia habitat, please complete a pedestrian survey for these species
within the Corps ESA action area. In this case, the Corps ESA action area would be contained
within a 100-foot radius of the footprint of proposed impacts to waters of the US. Following the
survey, please provide the survey report to the Corps (copy also the USFWS) for review."
Applicant Response: Pilot revisited the site and conducted a detailed study within a 100-foot
radius of the footprint of the proposed impacts. A Detailed Schweinitz's Sunflower and Small
Whorled Pogonia Survey Report presenting our findings is included as an attachment.

Response to Request for USACE Additional Information
Proposed Oak Ridge Landing Subdivision
September 10, 2020
Based on the above information, it is our opinion that the applicant has fulfilled and provided
the above requested information for the USACE to proceed with Nationwide Permit Verification
for the above referenced project. If there are questions regarding this request, or a need for
further information, please contact us at [phone].
Respectfully submitted,
PILOT ENVIRONMENTAL, INC.
4j'."l 7 f��
Michael T. Brame
Principal
Attachments: Revised Impact Exhibits
Revised Sheet 5 from the PCN Application
Detailed Schweinitz's Sunflower and Small Whorled Pogonia Survey Report

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A- \ / / '' / / / / / / / / �p/_ - / \ \ �� // / // / i °� I I I I I I 1 I usage that runs with the land to ensure that future
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09 i - - / �� - - / / � MIT � 'TI 1 1 the approved project plans. Any alterations to the site
TI I I I I shall not be permitted without review and approval by
I I I \ \ I I I� III I II the local governmental office having jurisdiction for
�D (pp�) ,,4 / / \ \ III III \ III II IIII III I I 1\ \ \ \ watershed stormwater many ement rotection."
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OAK/RIDO u ITED - 11 „ _ _ - - - sITE NOTEs:
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1 PARGEL #16 Go— - I I / / / / /9�0 \ &' / \ \ ) R P / f l / I I 1 1 1 1 I 1 \ \\ \ \ 2. REFERENCES:
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Q ( APRON B BLAGKBDRN ems. \ i I I - ` i - - - q� oo / / I I I c� \
\ \ \ \ �0 \ � ' - '- - - � � \ - � �, 2i \ ) � � 1 I / / 111 1 I I 1 I 1 I I 1 I � \ 3� \ `�\ \\ \ \ \ 3. EXISTING LAND USE: UNDEVELOPED
-p \ .iESU5 DE LA 6,A, ZA C5ONZALEZ \ I I I Q - i -9gg - 1 \ \\ \ 1\ \ \ \\ \\ \\ \ \ \\ \III PROPOSED LAND USE: SINGLE FAMILY DEVELOPMENT
--DB 61111 - PG 22 l I \ �'4`' _ � - \ � / I � � l \�p,T1oN / I I l I I 1 I I I 1 1 \ -
\\ \ RS-40 / RESJDENTFAL- I I Q' C� i \ l / / 1 1 I I I Pi�SER t / / / / / I I `I' 1 I I 1 \ \ \ \ \\ \\ \\ \ \\\ \\\� 4. EXISTING ZONING: AG & RS 40
' \ \ - O28"t5 5F I 1 I l 1 / / I I 1 1 \ 1 I'I //i /' \ \ \ \ \ PROPOSED ZONING: RS-40
2 \ \\ \ \ \ \ 1 \ l I I N z N16 °25'06" 1^1 I III I 1 \I I\\ \ \\ \\\ \\\
RLY� s3o \ - - - - `� /' - / I I I I I 1 / l I / III 1 I I I I I //. I 1 \ 5. TOTAL NUMBER OF LOTS: 49
PAR EL #I -� \ a- -------- ------ ,7 ,) // I / / I I I I I I I I I I I I � III 11 \\ \ 1\
\5TEVEN G LANT \ I' \- -% _------ _ \\ \ R�� " /�' / ////I// I I L I I I I III _
\ � ' � ti/ / / / / `� / I I y Q,Q.1 I °D I I I 1 I � I// I I I \\ \ \ 1 1 \ 6. TOTAL LINEAR FEET OF STREETS: 5,984 LFf
TONY M G_ 62 R - \ , � `� r - - _ _ _ - \ / / „ / R / / / // / / / /� \ I I \ \ I / /) / I I I \ \ \ \ \\` FALCON'S TRAIL CUL-DE-SAC LENGTH:
6363 - PG \ / �c K - - - 17 /• %' / / / / / / / 1 1 1 I III I // q/ "" �I 1 \ I I \ \\ \ \ \\ STUB STREET TO CENTER OF CUL-DE-SAC: 1199.5 LF
-40-YR_E51DENTIAL�
Off.\ ys`1\ I / �m / / / IL / \, \' I I I `I,, `, MIN LOT SIZES 40,0.00 SF
7 SETBACKS
P`GP� \ I I I ? \ - \I �\ 1 I �/ I m/ / / / l l I I / I \ 1 1� I (,.. �, I�%I�
t� T l 1 1 1 1 !�_ , i 1\
/ I I \ MIN WIDTH: INTERIOR: 150'
FRONTAGE:MIN WIDTH: EXTERIOR: 1 50'
\ PIS G L\ # 62$�t5- STREET FRONT SETBACK: 40'/65'
_ - @ ♦ ,' 1 20 / l l l r I l / / l 1 1 I I I 3� / I I 0 \ \ \ \ \ 1 \ o�i� AREA -es�
� -- \ I / I,row/�oRt�>=RL�Y / �, �. \ \ 1 �-'' 1 / 1 / q� I I � l 1 \ 1 \ � I •�� } �`(1
1 ARGEL #162al 9 R �2 // I / O / f/ 1 1 I 1 I 1 \ I I I P I16\ P� 102 STREET SIDE SETBACK: 40'/65'
LOT y P� & -- I; II-( \ % - - - \ I / / 8 / / / ( / / f 1 1 1 �I / / I I I I 1 \ I I o I I K NOY\PAORERT'1E� LG SIDE YARD: 15'
D L DONI<iELL, I I I - 1 \\ •J / / I / / / I I / I 1 I 1 I I I I I 1 1 I 1 I I \ I 1 `o I I I I f/ DB 45O%- It,i 152q� - REAR YARD: VE
I I I \ DB 4-13G - PG 2.0� \ N, 1 \ / o R�P I / / I / 1 I / / l I / I I 1 I I I I I I I I IIII I I IIII \ (( GO-M I/ UNOEVE�1�7PED MAX BLDG COVERAGE: 30%
CAR / \ \ \ \ I 1 \ 40• /-RE5I6ENTIP \ / / / / / / / / I I I I 1 \ \ \ / -$+�,AREA
0 '�. \ ' s- / / / / / 1 /q °�8�# / / / / I / / I I I I I I I I oP I I I I 1 \ \ \ \\ \ I / / / 8 TOTAL INAREA
= 80.007 Act
ESS/p ®, \ \ \ \ \ \ / \ \ I 4�1 ( / '�i / �j=�= - - I I I I I 1 \ 1 \ \ \ I I I I / / AREA IN LOTS = 59.603 Act
of \ \ \ \ \ \ I O / /� \ I 1 ( I I -
6
SEAL � \ \\\ 1 2� - -' / / g30�- \ I � // � -/ I / \ _ / I I I I I I 1 I 1 �I I I I I I AREA IN RIGHTS -OF -WAY - 7.360 Act
_ 1 727 _ \ \ \ \ /' \ \ � / / \ / / / / / / $9/ / \ ^ \\ \ 35 � � O ` � 1 1 I I I I °P I I I \III `I\ � � i I � AREA IN COMMON AREA/OPEN SPACE = 13.044 Act
_ / / -�
\ \ \ / \ � / I / 4 � - \ 9. PROPOSED BUILT UPON AREA:
%�O ,`O \ \\� \ / \ / / // // / / / / / /.• . ' \ \\\\ l / 1//10 TOTAL PROPOSED BUA = 9.736 Act or 12.17%
TREE
ci/Oci/2020 I1 I i i I I 10.PRESERVATION:
Z. r AREA REQUIRED:(TOTAL ACREAGE - PONDS) x 20%op / 8031 1
RM\ �TOTAL PROVIDED Act or26 5% <<NOW/PO
1 - \ PARGEL #I6 65/ I / I I / l / I '•:• -\\ �/ / / 434\ 2
- PC 2, PB 8c1 1/
11. TOPOGRAPHY DERIVED FROM INFORMATION PROVIDED BY
1 D L DONN LL, III/ O, \ �/ / - //'/ GUILFORD COUNTY AND SUPPLEMENTED BY FIELD SURVEY
LEGEND OF SYMBOLS
D I5TURBED AREA
EXCELSIOR MATTING
EXISTING CONTOURS
PLUNGE POOL_
TEMP GONST ENTRANCE
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FT -GE
BASIN I BASIN NUMBER
a
I
STONE 4 WIRE INLET PROTECTION
STORM PIPE $ PIPE NUMBER
O2
TEMP DIVERSION BERM
CDCDCDCDCDCDCDCXD
RIP -RAP APRON
SGALE $ 5WALE NUMBER
— —
CHECK DAM
SILT FENCE
xx
ILLIAM J DONN L ° i / / / / I o i DATA BY THIS FIRM.
/I f ARGOT DONNELL _ Q / / / / / / / I / I �� / — / � / (/ I //y — � — / / / / I \ \ / / // /
/DB 4735 PG T354 / / / '/ 4' Qi _ _ / /
_ _ I / 12. IN THE EVENT OF ELEVATION DISCREPANCIES BETWEEN
- - -' 900 1 _ _ / % / I\ \ I \) I //// //% EXISTING FIELD CONDITIONS AND TOPOGRAPHY INFORMATION
P25-40 / 51[*NTIA� P / / / / _ _
I = / / / / o - - - - _ _ - j / i�°�/ -_ ��' \ // // // // / j PROVIDED BY GUILFORD COUNTY, ALL STORM DRAINAGE
° _I 0/� / %\ /�/I // -�_� - -�\ N W/E/ - - -- -- -- -- - - i/ - / / // /�8�/ i d i/ ///%/ �i ---- _ a - \ - I I I I �/ /%%//�/ / ////////// //t�`/�// /•/�
FEATURES SHALL BE FIELD LOCATED TO MEET DESIGN INTENT.
ORMERL902Y
PAGEL 22=4 / -
OWRANAKER,/r /' 6° - �,,�\ \ 1 / / r J / / :1 •;..;.•���sso �� ` �°` 1 �/ / /% // /i/i, /i i i� ;
UDI\4HWHITArER/ `J�' --- - �� - _ •�:' -\ a \ / _� 1 /lc6l///
sio \ �D BQo�--PG /
-999� \A / & E'>1 ENIT / 0- - - �`- — - ( � v _- - - e -�� \ \ \ y ATION / 9 I� / // TORNtV�I T R PLAN
/
50 BUFFER 50 BUFFER - - ` - \ \ \ - / , 9�° v3 _ \ \ I - - _ —'� - _
20' 30' z z 3O' 20' - �-� \ \ , - - / / / /' S ° % / l ) 1 1 olgz ) �/ - ; \ \
6L \ — 906 „�_� \ 1 / / �# / _ �9 \ \ OAK R I D� LAND I NC
4 < \ \ i _ ` ° 30 \ i / / / Af1;G 1 d 1 / I .... .
ZONE ZONE ZONE ZONE ` / // / \ I I / / /f RA Ca
15�1�1 I / % \ \� � 8 �\ \ \ °� I I I / ( / j l / 2�Oa—A OAK I`� V6E ROAD
2 1 C) 1 2 \ \ I I/�/ / ��HW \I I I \\
O
WATERSHED NOTES. � - / \ 1 / / � /o � OAK RIDGE TOWNSHIP, 6UILFORD COUNTY O \ \ I \ \ 1 ( / 5 % / I� 51 DENT 1 L/ / \ \ \ \ \ \ OAK RI DOE NORTH CAROL I NA
// \\ \ \\ \ //\ \ \/, , 1. WATERSHED: GREENSBORO \ \\ \ \ \ 1 \ \ I / / / / / / \ O6 'big" \ \ \ = o so' lo0 20
/�/�/�' \ \ \ \ 1 / / \ \ \ \ \ \ \ \ \\ \ \ DATE: a/Oa/202C SCALE: I 100 SHEET: 4 of 17
ZONE I MUST REMAIN / NE 2 MAY BE D15TURBED
NATURAL AND UNDISTURBED �� ��� BUT MUST BE REVEOETATED
ALL BUFFER DIMENSIONS FROM TOP OF STREAM BANK
5TREAM BUFFER DETAIL
TYPICAL 5ECTION
NO SGALE
2. DISTANCE TO
NEAREST FLOODWAY: >2000
3. SOIL TYPES:
GC GIS:
ApB
APPLING SANDY LOAM,
2%-6% SLOPES
CcB
CECIL SANDY LOAM, 2%-6%
SLOPES
Ccc
CECIL SANDY LOAM, 6%-10%
SLOPES
CeC2
CECIL SANDY LOAM, 6%-10%
SLOPES, ERODED
MaD
MADISON SANDY LOAM,
10%-15% SLOPES
MaE
MADISON SANDY LOAM,
15%-35% SLOPES
WkE
WILKES SANDY LOAM, 15%-45% SLOPES
4. AVERAGE SLOPE: 8%
LEGEND:
UTIL ESMT = UTILITY EASEMENT
U & A ESMT = UTILITY AND ACCESS
EASEMENT
PTE = PUBLIC TRAIL EASEMENT
DE = DRAINAGE EASEMENT
DMUE = DRAINAGE MAINTENANCE &
UTILITY EASEMENT
APPROVALS FOR TRANSCONTINENTAL GAS DRAINAGE EASEMENT WIDTHS:
PIPELINE CORP CROSSING, UPACE, AND < 2 Ac: 30' x 50'
NCDENR 404/401 PERMITS WILL BE 2 Ac - 6 Ac: 15' FROM C/L
OBTAINED PRIOR TO ANY CONSTRUCTION 6.01 - 25 Ac: 30' FROM C/L REVISIONS:
6/18/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
6/18/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
6/09/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
5/26/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
4/30/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
HUGH CREED ASSOCIATES, INC, PA
CONSULTING ENGINEERS � AND SURVEYORS
PO BOX 9623 PHONE: [phone]
1306 W WENDOVER AVE OR 336 275-8084
GREENSBORO, NC 27408
FIRM LICENSE #C-0551 E-MAIL: hca®hughcreedassociates.com

50' RIGHT OF WAY 4 5'
20' PA\/EMENT
SHOULDER SHOULDER DITCH
8' 6' b
50' RIGHT OF WAY 4' S' 1. TES
1, ALL SIGNS SHALL BE MADE USING TYPE III SHEETING, 2,5 FEET
20' PA\/EMENT 2, ALL 'STOP' AND 'WARNING' SIGNS SHALL BE 30'x30', MAJOR ROAD
3, ALL SIGNS SHALL BE PLACED ON 3-LB. (1,36KG) GALVANIZED STEEL U-CHANNEL POSTS WITH THE F❑LL❑WING COMMENTS:
SHOULDER SHOULDER DITCH A) USE POSTS OF SUFFICIENT LENGTH TO PERMIT APPR❑PRIATE SIGN M❑UNTING HEIGHT OR SPLICE POSTS IF REQUIRED, w
Lj
6' 6' 5' B) DRIVE POSTS TO THE REQUIRED DEPTH, BEING SURE THEY ARE PLUMB, DRIVE THE POST BY HAND OR BY MECHANICAL MEANS,
STOP
IP
PROTECT THE POSTS WITH APPR❑PRIATE DRIVING CAP, CONCRETE F❑UNDATI❑NS ARE NOT REQUIRED, IN ISLAND
APPLICATI❑NS, CORED HOLES SHALL BE THE S❑IL DEPTH,
C) REPLACE ANY POST THAT IS BENT, OR ❑THERWISE DAMAGED IN DRIVING,
MIN. 12' TO 40' N
MAX.
PER FT
I" PER'FT I" PER FT
I" PER FT
1/4" PER FT
�" PER FT
D) D❑ NOT WELD OR CUT SUPPORTS IN THE FIELD, EXCEPT FOR THE SAW CUTTING OF U-CHANNEL POST MATERIAL FOR THE
FRAMES AND CROSS BRACES THAT MAY BE REQUIRED FOR TYPE D, E, AND F SIGNS WITH TWO OR MORE SUPPORTS,
�—
yOp�
4: 5 GO NG
{G LK
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3: /
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5' GON E) USE TWO COATS OF AN APPROVED ❑RGANIC NON -AEROSOL ZINC REPAIR PAINT IN T❑UCHING UP THE TOPS OF U-CHANNEL
WALK POSTS THAT MAY HAVE BEEN DAMAGED IN DRIVING, CUT ENDS OF THE TOPS OF U-CHANNEL POSTS, FRAMES, AND CROSS -
BRACING, AND DAMAGED AREAS ON THESE AND ALL OTHER GALVANIZED MATERIAL,
IN. 6,0' TO 12,0' w
�Ly
�Ly
THIS INF❑RMATI❑N IS POSTED IN THE JULY 2006 MANUAL 'STANDARD SPECIFICATI❑NS FOR ROADS AND STRUCTURES' IN
w
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6 TERRAIN MAX SLOPE
2" SFc1.5A HOT MIX ASPHALT LE�/EL 2 1
6
2" SFcI.5A
* TERRAIN MAX
HOT MIX ASPHALT LEVEL
SLOPE SECTI❑N 903-3 (0) ON PAGES 9-15,
4, ALL SIGNS WILL BE PLACED ON EACH ROAD IN ACCORDANCE WITH THE MANUAL ON UNIF❑RM TRAFFIC CONTROL DEVICES FOR
2 1 FHWA, 'STANDARD HIGHWAY SIGNS' FR❑M THE FHWA, N❑RTH CAR❑LINA DEPARTMENT ❑F TRANSP❑RTATI❑N 'STANDARD
MIN❑R NOT LESS
R❑AD
THAN 6,0
. ::
(AVG. RATE OF 220 LB5/SY FOR I ROLLING 2 I
. : :: (AVG.
RATE OF 220 LBS/SY FOR I ROLLING
2 I SPECIFICATIONS FOR ROADS AND STRUCTURES', 'HIGHWAY DESIGN BRANCH ROADWAY STANDARD DRAWINGS', 'NORTH CAR❑LINA
FEET
2" LIFT OR 110 LBS/SY FOR 2 1" LIFTS) HILLY 1-1/2 1
2" LIFT OR 110 LB5/5Y FOR 2 1" LIFTS) HILLY
1-1/2 1 SUPPLEMENT TO THE MANUAL ON UNIF❑RM TRAFFIC CONTROL DEVICES', AND THE APPROVED PLANS,
PAVED ROAD
10" ABG (GOMPAGTED)
10" ABC- (GOMPAGTED)
5, A FINAL INSPECTI❑N LETTER WILL NOT BE ISSUED BY THE DISTRICT ❑FFICE UNTIL ALL REQUIRED SIGNS ARE PROPERLY
INSTALLED TO THE APPR❑PRIATE STANDARDS WITH NCD❑T APPROVED MATERIALS AND INSPECTED BY DIVISI❑N 7 - DISTRICT 2
(GREENSB❑R❑) ❑FFICE OR ITS AUTH❑RIZED REPRESENTATIVE,
-III=1I
TYPICAL ROAD SECTION
TYPICAL ROAD SECTION
RESIDENTIAL COLLECTOR ROAD
LOCAL RESIDENTIAL ROAD
ROADSIDE STOP SIGN DETAIL _ W
W
NT5
NT5
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APPROVALS FOR TRANSCONTINENTAL GAS
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WIDTHS:
x 50'
PVMT—
150 WILLIAM5 TRAN50ONTENTINTAL
Z.
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P1(I 5TA = I+50 NCDENR 404/401 PERMITS WILL BE
OBTAINED PRIOR TO ANY CONSTRUCTION
2 Ac — 6 Ac: 15' FROM C/L
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PROPOSED STREET
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HUGH CREED ASSOCIATES, INC, PA
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GREENSBORO, NC 27408
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3. ALL SIGNS SHALL BE PLACED ON 3—LB, (1,36KG) GALVANIZED STEEL U—CHANNEL POSTS WITH THE F❑LL❑WING COMMENTS, 50' RIGHT OF WAY 4' 5'
�$ A) USE POSTS OF SUFFICIENT LENGTH TO PERMIT APPR❑PRIATE SIGN M❑UNTING HEIGHT OR SPLICE POSTS IF REQUIRED, w
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PROTECT THE POSTS WITH APPR❑PRIATE DRIVING CAP, CONCRETE F❑UNDATI❑NS ARE NOT REQUIRED, IN ISLAND �
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25' 25' E) USE TWO COATS OF AN APPROVED ❑RGANIC NON —AEROSOL ZINC REPAIR PAINT IN T❑UCHING UP THE TOPS OF U—CHANNEL
2 I O I 2
POSTS THAT MAY HAVE BEEN DAMAGED IN DRIVING, CUT ENDS OF THE TOPS OF U—CHANNEL POSTS, FRAMES, AND CROSS-1/4" PER ET
BRACING, AND DAMAGED AREAS ON THESE AND ALL OTHER GALVANIZED MATERIAL, IN. 6,0' TO 12,0' I" PER FT I" PER FT OPT
THIS INF❑RMATI❑N IS POSTED IN THE JULY 2006 MANUAL 'STANDARD SPECIFICATI❑NS FOR ROADS AND STRUCTURES' IN w 4:/ ��' 5' GONG O O
~ ~ 47
SECTI❑N 903-3 (0) ON PAGES 9-15, NOT LESS � gLOp� WALK
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5. A FINAL INSPECTI❑N LETTER WILL NOT BE ISSUED BY THE DISTRICT ❑FFICE UNTIL ALL REQUIRED SIGNS ARE PROPERLY �
INSTALLED TO THE APPR❑PRIATE STANDARDS WITH NCD❑T APPROVED MATERIALS AND INSPECTED BY DIVISI❑N 7 — DISTRICT 2 (A\/O. RATE OF 220 LB5/5Y FOR I ROLLING 2 I NATURAL AND UNDISTURBED BUT MUST BE REVEGETATED
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APPROVALS FOR TRANSCONTINENTAL GAS
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OBTAINED PRIOR TO ANY CONSTRUCTION
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DATE: 8/26/2020
SCALE: NOTED ° SHEET: 13 of 1-7
HUGH CREED ASSOCIATES, INC, PA
CONSULTING ENGINEERS 8� AND SURVEYORS
REVISIONS:
7/21/20210
US
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COMMENTS
TIAL
PO BOX 9623 PHONE: [phone]
1306 W WENDOVER AVE OR 836� 275-8084
GREENSBORO, NC 27408
FIRM LICENSE #C-0551 E—MAIL: hca®hughcreedassociates.com
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TYPICAL SECTION
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50' RIGHT OF WAY 4' 5'
20' PA\/EMENT
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approved
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sediment dike clean water dike __'-0 sump -hole
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worn area - 2' dia-j
pumps should discharge length natty exceed
onto a stable velocity that which can be
dissipator made of rip rap oomplated In one day
or sandbags
STREAM
FLOW
INSTALL SANDBAGS
TO STOP FLOW
SANDBAGS
INLET PIPE -
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`TEMP.
STONE
RIP -RAP DAM
OUTLET
TEMPORARY STREAM
GROSS 1 NO FOR
STORM DRAIN INSTALLATION
NO SCALE
APPROVALS FOR TRANSCONTINENTAL GAS DRAINAGE EASEMENT WIDTHS:
PIPELINE CORP CROSSING, USACE, AND < 2 Ac: 30' x 50'
NCDENR 404/401 PERMITS WILL BE 2 Ac - 6 Ac: 15' FROM C/L
OBTAINED PRIOR TO ANY CONSTRUCTION 6.01 - 25 Ac: 30' FROM C/L
SEC UON A -A
Ir[It"WIM5 4JEWHIKj
base flow + 1 foot
work area (2 fact minlmunn)
cross section of sandbag dike
PUMP AROUND DETAIL
NOTES:
1, PUMP AROUND DIKES SHALL NOT BE SET OUTSIDE OF THE ❑ISTUREBEDIIMPACT
LIMITS SHQWN ON THE PLANS.
2. INS I ALL PUMP-AHUUND DWEHISUN AND U]mYVAI EH I HE GUNS I RUG I IUN /-UNE
THROUGH THE DEWATERING DEVICE. THE CONTRACTOR SHALL STAGE THE UMITS OF
THE PUMP -AROUND FLOW DIVERSION TO DEWATER ONLY THAT SECTION SCHEDULEI}
FOR THAT DAYS WORK. AT THE END 4F EACH WORK DAY, THE WORK AREA SHALL E IE
STABILIZED. THE PUMP AROUND PRACTICE REMOVED, AND THE FLOW RESTORED TO
THE CHANNFI WORK SHALL BE COMPLETED ONLY DURING FORECAST PER1006 OF
DRY WEATHER,
PLAN VIEW
straw bale dike or berm
'~ 1.5 it
6-ft fi.8-m] t (0-45 in)
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rebar -or stakes far
straw bales
4-In (10-cml 1\1__-----__-_________
minimum depth
T-
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minimum
r
DEWATERING BASIN DETAIL
NOTES:
1. PRIOR TO INSTALLATION OF
SANDBAGS, CONTRACTOR TO
ENSURE ALL MATERIALS ARE ON -
SITE AND READY FOR INSTALLATION.
WEATHER CONDITIONS SHOULD BE A
MINIMUM OF FIVE DAYS AFTER ANY
RAIN EVENT AND NO FORECAST OF
RAIN FOR 48-HOURS AFTER
INSTALLATION BEGINS. TOTAL
INSTALLATION TIME SHOULD BE LESS
THAN EIGHT HOURS.
2. INSTALL SANDBAGS TO DEWATER
CONSTRUCTION AREA.
3. INSTALL PUMP AND DEWATERING
LINES.
4. CUT OUT STREAMBED AND INSTALL
RIP -RAP OUTLET WITH TOP AT
EXISTING STREAMBED LEVEL.
INSTALL TEMPORARY STONE DAM
AND FILTER FABRIC.
5. BEGIN PUMPING AND CONTINUE
PUMPING DURING STORM DRAIN
INSTALLATION.
6. CUT DITCH FOR STORM DRAIN PIPE
WITH BACKHOE. LAY STORM DRAIN
PIPE ONE FOOT BELOW STREAMBED
AND INSTALL ENDWALL.
7. IMMEDIATELY REMOVE SANDBAGS TO
DIVERT FLOW THROUGH STORM
DRAIN PIPE. SPREAD OUT STONE
DAM KEEPING RIP -RAP OUTLET
LEVEL WITH EXISTING
STREAMBEAD.
8. SEED CONSTRUCTION SITE AS NEEDED.
CONTRACTOR MUST
NOTIFY EROSION
CONTROL INSPECTOR
BEFORE ANY STREAM
DISTURBANCE OCCURS
30,
RIP -RAP APRON THERE 19 NO PERMANENT
25' LONG x 24" DEEP STREAM IMPACT
d50 = 10" CLASS I RIP -RAP ASSOCIATED WITH THI5
KEYED INTO EXISTING RIP -RAP AS EX15TINCP
STREAM BANKS ONLY STREAM BED 15 BEDROCK
s TvF0piGL)
— — — — — — — — — — — — — — —
_ -/ _ _ _ _ _ �o' -UT l�lrr ESM'T
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50' PROPOSED R/N
a 150' WILLIAM5
NONE TRAN5CONTENTINTAL
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(APPROX LOCATION)
PER DB 12a2 - PC-7 0447 4
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PLUNGE POOL
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BA51 N 8 BASIN NUMBER
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STONE $ WIRE INLET PROTECTION
STORM PIPE $ PIPE NUMBER
O2
TEMP DIVERSION BERM
RIP -RAP APRON
SWALE 4 SWALE NUMBER
CHECK DAM
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SCALE:
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2406-A OAK RIDSE ROAD
OAK RIDI67E, NORTH CAROLINA
HUGH CREED ASSOCIATES, INC, PA
CONSULTING ENGINEERS -AND SURVEYORS
1306 W WENDOVER AVE OR 836 275-8084
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■�■� '•/11■•'T��7�RJ����i1=11/iL��1113/fiiT•T��■� GREENSBORO, •
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` A 7-17
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L0T NUM
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20OFESS/0�9 �9
LINEAR f=EET (Lf +�
SEAL
10727
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20' 30' z �
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4
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m
m
ZONE ZONE LL
1L ZONE ZONE
2 1 O
O 1 2
O
O
tr
tr
\\/�/ /��
ZONE I MUST REMAIN
NE 2 MAY BE D 15TURBED
NATURAL AND UNDISTURBED �� ��� BUT MUST BE REVEGETATED
ALL BUFFER DIMENSIONS FROM TOP OF STREAM BANK
5TREAM BUFFER DETAIL
TYPICAL 5ECTION
NO SCALE
\
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5
1�77 L ±
12
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5� �
WA 16-22
0.026 Ac t
�s
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+ 1
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VICINITY MAP
NO SCALE
OWNERS:
OAK RIDGE LANDING
PARTNERS, LLC
PO BOX 16168
HIGH POINT, NC 27261
[phone]
OAK RIDGE UNITED
METHODIST CHURCH
ROUTE 1, BOX 504
OAK RIDGE, NC 27310
MR GLENN CRIHFIELD
[phone]
CONTRACT HOLDER:
B S C HOLDINGS, INC
PO BOX 16168
HIGH POINT, NC 27261
[phone]
DEVELOPER:
B S C HOLDINGS, INC
PO BOX 16168
HIGH POINT, NC 27261
[phone]
DEED RESTRICTION —RESTRICTIVE COVENANT:
"Development of subject property is required to be in
_ accordance with applicable state and federal
eA/ regulations for the National Pollutant Discharge
5AE3 Elimination System (NPDES) Phase II stormwater
1� management program. The recording of this document
1 establishes an enforceable restriction on property
usage that runs with the land to ensure that future
;,`,•;;: ' development and/or redevelopment shall maintain the
3q site in a manner consistent with applicable law and
the approved project plans. Any alterations to the site
shall not be permitted without review and approval by
2a the local governmental office having jurisdiction for
• 1G ± 42 watershed/storm water management protection."
n2a
SITE NOTES:
38 1. PARCEL 162863 & A PORTION OF 163172
43
2. REFERENCES:
DB 8206 — PG 2422 & PART OF DB 7352 — PG 2720
O 3. EXISTING LAND USE: UNDEVELOPED
PROPOSED LAND USE: SINGLE FAMILY DEVELOPMENT
4. EXISTING ZONING: AG & RS-40
30 PROPOSED ZONING: RS-40
5. TOTAL NUMBER OF LOTS: 49
26
�IC 1� O IAI 6. TOTAL LINEAR FEET OF STREETS: 5,984 LFt
FALCON'S TRAIL CUL—DE—SAC LENGTH:
1/ STUB STREET TO CENTER OF CUL—DE—SAC: 1199.5 LF
= 7 SETBACKS (RS-40):
MIN LOT SIZE: 40,000 SF
MIN WIDTH: INTERIOR: 150'
MIN WIDTH: EXTERIOR: 150'
MIN STREET FRONTAGE: 50'
36 STREET FRONT SETBACK: 40'/65'
32 STREET SIDE SETBACK: 40'/65'
1 L
\
5A
AA 1=6
JNAA 1-
0.041 Act \
\
\
\
WATERSHED NOTES:
1. WATERSHED:
GREENSBORO
2. DISTANCE TO
NEAREST FLOODWAY: >2000'
3. SOIL TYPES:
GC GIS:
ApB
APPLING SANDY LOAM,
2%-6% SLOPES
CcB
CECIL SANDY LOAM, 2%-6%
SLOPES
CcC
CECIL SANDY LOAM, 6%-10%
SLOPES
CeC2
CECIL SANDY LOAM, 6%-10%
SLOPES, ERODED
MaD
MADISON SANDY LOAM,
10%-15% SLOPES
MaE
MADISON SANDY LOAM,
15%-35% SLOPES
WkE
WILKES SANDY LOAM, 15%-45% SLOPES
4. AVERAGE SLOPE: 8%
L
of
LEGEND:
UTIL ESMT = UTILITY EASEMENT
U & A ESMT = UTILITY AND ACCESS
EASEMENT
PTE = PUBLIC TRAIL EASEMENT
DE = DRAINAGE EASEMENT
DMUE = DRAINAGE MAINTENANCE &
UTILITY EASEMENT
OSIDE YARD: 15'
REAR YARD: 30'
3' MAX BLDG COVERAGE: 30%
Q'
8. AREA INFORMATION:
�0 TOTAL AREA = 80.007 Act
AREA IN LOTS = 59.603 Act
�� AREA IN RIGHTS —OF —WAY = 7.360 Act
O AREA IN COMMON AREA/OPEN SPACE = 13.044 Act
9. PROPOSED BUILT UPON AREA:
35 O
OTOTAL PROPOSED BUA = 9.736 Act or 12.17%
U 10. TREE PRESERVATION:
AREA REQUIRED: (TOTAL ACREAGE — PONDS) x 20%
(80.007 Act — 3.031 Act) x 20% = 15.395 Act
>> TOTAL PROVIDED = 16.327 Act or 26.5% <<
34 I� 11. TOPOGRAPHY DERIVED FROM INFORMATION PROVIDED BY
GUILFORD COUNTY AND SUPPLEMENTED BY FIELD SURVEY
DATA BY THIS FIRM.
47
12. IN THE EVENT OF ELEVATION DISCREPANCIES BETWEEN
EXISTING FIELD CONDITIONS AND TOPOGRAPHY INFORMATION
PROVIDED BY GUILFORD COUNTY, ALL STORM DRAINAGE
FEATURES SHALL BE FIELD LOCATED TO MEET DESIGN INTENT.
NETLANDS MAP
OAK R I DC= LAND I NC
2408- OAK RI1�CE ROAD
OAK RIDGE TOWNSHIP, W I LFORD COUNTY
OAK RI D&E, NORTH CAROL I NA
®. ® I AG ± O.Ca5 AG ± DATE: 11/011/202C SCALE: I" = 100' 0 50' 100- 20 SHEET: I of I
APPROVALS FOR TRANSCONTINENTAL GAS DRAINAGE EASEMENT WIDTHS: HUGH CREED ASSOCIATES A
PIPELINE CORP CROSSING, UPACE, AND < 2 Ac: 30' x 50' > INC.>
NCDENR 404/401 PERMITS WILL BE 2 Ac — 6 Ac: 15' FROM C/L CONSULTING ENGINEERS AND SURVEYORS
OBTAINED PRIOR TO ANY CONSTRUCTION 6.01 — 25 Ac: 30' FROM C/L REVISIONS:
6/18/2020 — PILOT ENVIRONMENTAL REVIEW COMMENTS — TML PO BOX 9623 PHONE: [phone]
6/18/2020 — TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS — TML 1306 W WENDOVER AVE OR [phone]
6/09/2020 — PILOT ENVIRONMENTAL REVIEW COMMENTS — TML GREENSBORO, NC 27408
5/26/2020 — TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS — TML FIRM LICENSE #C-0551 E—MAIL: hca®hughcreedassociates.col'1'1
4/30/2020 — TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS — TML

PERMANENT SEEDING SPECIFICATIONS
DEFINITION
Seeding disturbed areas with perennial grassed and/or legumes to provide a permanent vegetative cover
to lessen runoff and soil erosion.
PURPOSE
To lessen soil erosion and permanently stabilize disturbed areas created by grading Of construction sites.
GONDITIONS WHERE PRAGTIGE APPLIES
All bare soil areas on construction sites which are not covered by structures or other erosion control devices.
PREPARATION
Prepare seedbed by ripping, chiseling, harrowing, or plowing to depth of six inches so as to produce a loose,
friable surface. Remove all stones, boulders, stumps, or debris from the surface which would prohibit
germination of plant growth.
Incorporate into the soil a00 to 1,000 pounds of 10-10-10 fertilizer plus 500 pounds of 20% superphosphate
per acre a two tons of dodomitic lime per acre unless soil tests indicate that a lower rate of lime can be used.
Mulch after seeding with 1.5 tons of grain straw per acre and either Crimp straw into soil or tack with liquid
asphalt at 400 gallons per acre or emulsified asphalt at 300 gallons per acre.
Select seeding mixture and best planting dates from table below.
PLANTS 8 MIXTURE PLANTING RATES/AGRE PLANTING DATES
Tall Fescue 100 - 150 Ibs Aug. 15 - Oct. 15
(Low maintenance) Feb. 15 - May I
Tall Fescue 200 - 250 Ibs Aug. 15 - Oct. 15
Waterways $ lawns Feb. 15 - May I
(High maintenance)
Blend of two turf-Npe 200 - 250 Ib5 Aug. 15 - Oct. 15
tall Fescues M0961') and Feb. 15 - May I
two or more improved
Kentucky bluegrass varieties
(10%) (high maintenance)
Tall Fescue d 100 Ib5 Feb. 15 - May 1
Kobe or Korean and Aug. 15 - Oct. 15
Lespedeza I / 20 -25 Ib5
Tall Fescue ff 50 Ibs
Sericea Lespedeza 60 Ibs./aC. Nov. I - Feb. 1
(Unscorif ied)
Tall Fescue $
60 Ib5
July and August
German Millet
and
or Sudangrass 2/
50 Ibs
Tall Fescue 8
70 Ib5
Nov. I - Jan. 30
Ryegroin 2/
and
25 Ibs
Gommon Bermudogra55
5 Ib5 (hulled)
April 15 - June 50
15-20 Ibs/acre (unhulled)
Feb. I - March 30
1/ For spring seedings, use
Scarified Lespedeza seed.
For late fall and winter seeding5,
use unscarified seed.
2/ Annuals such as Millet, Sudangrass and Ryegrain must be kept at 10-12" maximum height.
TEMPORARY SEEDING SPEC I F 1 CATIONS
DEFINITION
Seeding disturbed areas with annual grasses or legumes to provide a temporary ground cover
to lessen soil erosion.
PURPOSE
To temporarily stabilize graded cut and fill slopes that cannot be seeded with permanent vegetation within
thirty days after completion.
CONDITIONS WHERE PRAGTIGE APPLIES
1-4here bare soil has been exposed by grading, and vegetatiive cover is needed for one year or less.
May include such areas as temporary sediment pond, diversions, soil stockpiles, building pads, rough -graded
road banks, etc. It is also used to provide a temporary perimeter buffer.
PREPARATION
Prepare seedbed by ripping, chiseling, harrowing, or plowing to depth of at least six inches so as to produce
a loose friable surface. Incorporate 750-1,000 pounds 10-10-10 fertilizer and up to two tons of dolomitic
lime per acre. (Note: Lime may not be needed if a soil test indicates a ph Of 6.5 or higher). Mulching is
required according to the same specifications as for permanent seeding unless waived by Soil Scientist.
Select seeding mixture and best planting dates from Table 12.
TABLE 12 - TEMPORARY SEED I NOS
PLANTS ff MIXTURE PLANTING RATES/ACRE PLANTING DATES
Rye Orain 120 Ib5 Jon.l - May I
Kobe Lespedeza 50 Lbs.
German Millet or 40-50 Ibs May I - Aug. 15
Sudan Ora55
Rye (Grain) 120 Ib5 Aug. 15 - Dec. 30
(may Substitute Oats before Oct. I or Wheat from Oct. I - Nov. 15)
Gonstruction I. Remove and properly dispose of all trees, brush, stumps, or other objec-
5pecifications tionable material. Fi1I and compact all ditches, swales, or gullies that will be
crossed to natural ground level or above.
2. Just before placement of fill, the base of the ridge should be disked by
machinery.
3. Excavate, shape, and stabilize the diversion to line, grade, and cross section,
as required in the design plan (Figure 6.21b).
4. Compact the ridge to prevent unequal settlement and to provide stability
against seepage.
5. Vegetatively stabilize the diversion after Its Installation.
Maintenance Inspect permanent diversions after every rainfall during the construction opera-
tion. Immediately remove any obstructions from the flow area and repair the
diversion ridge. check outlets and make timely repairs as needed. Maintain the
vegetation in a vigorous, healthy condition at all times.
PERMANENT D 1 VERS I ONS
Construction I. Remove and properly dispose of all trees, brush, stumps, or other objec-
SpedflGatlons tionable material.
2. Ensure that the minimum constructed cross section meets all design requirements
3. Ensure that the top of the dike is not lower at any point than the design
elevation plus the specified settlement.
4. Provide sufficient room around diversions to permit machine regrading and cleanout.
5. Vegetate the ridge immediately after construction, unless it will remain in place less
than 30 working days.
y (` Malntenance Inspect temporary diversions once a week and after every rainfall. Immediately remove
�i sediment from the flow area and repair the diversion ridge. Carefully check outlets and
>; make timely repairs as needed. When the area protected is permanently stabilized,
remove the ridge and the channel to blend with the natural ground level and appropriately
stabilize it.
TEMPORARY D I VERS I ON BERM
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CONSTRUCTION SPECIFICATIONS
1. CLEAR, GRUB AND STRIP THE AREA UNDER THE EMBANKMENT OF ALL VEGETATION AND
ROOT MAT. REMOVE ALL SURFACE SOIL CONTAINING HIGH AMOUNTS OF ORGANIC MATTER
AND STOCKPILE OR DISPOSE OF IT PROPERLY. HAUL ALL OBJECTIONABLE MATERIAL TO THE
DESIGNATED DISPOSAL AREA. PLACE TEMPORARY SEDIMENT CONTROL MEASURES BELOW
BASIN AS NEEDED.
2. ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS FREE OF ROOTS, WOODY
VEGETATION. ORGANIC MATTER AND OTHER OBJECTIONABLE MATERIAL. PLACE THE FILL IN
LIFTS NOT TO EXCEED 9 INCHES, AND MACHINE COMPACT IT. OVER FILL THE EMBANKMENT
6 INCHES TO ALLOW FOR SETTLEMENT.
3. SHAPE THE BASIN TO THE SPECIFIED DIMENSIONS. PREVENT THE SKIMMING DEVICE FROM
SETTLING INTO THE MUD BY EXCAVATING A SHALLOW PIT UNDER THE SKIMMER OR
PROVIDING LOW SUPPORT UNDER THE SKIMMER OF STONE OR TIMBER.
4. PLACE THE BARREL (TYPICALLY 4-INCH SCHEDULE 40 PVC PIPE) ON A FIRM, SMOOTH
FOUNDATION OF IMPERVIOUS SOIL. DO NOT USE PERVIOUS MATERIAL SUCH AS SAND,
GRAVEL OR CRUSHED STONE AS BACKFILL AROUND THE PIPE. PLACE THE FILL MATERIAL
AROUND THE PIPE SPILLWAY IN 4-INCH LAYERS AND COMPACT IT UNDER AND AROUND THE
PIPE TO AT LEAST THE SAME DENSITY AS THE ADJACENT EMBANKMENT. CARE MUST BE
TAKEN NOT TO RAISE THE PIPE FROM THE FIRM CONTACT WITH ITS FOUNDATION WHEN
COMPACTING UNDER THE PIPE HAUNCHES.
PLACE A MINIMUM DEPTH OF 2 FEET OF COMPACTED BACKFILL OVER THE PIPE SPILLWAY
BEFORE CROSSING IT WITH CONSTRUCTION EQUIMENT. IN NO CASE SHOULD THE PIPE
CONDUIT BE INSTALLED BY CUTTING A TRENCH TROUGH THE DAM AFTER THE EMBANKMENT
IS COMPLETE.
5. ASSEMBLE THE SKIMMER FOLLOWING THE MANUFACTURERS INSTRUCTIONS. OR AS DESIGNED.
6. LAY THE ASSEMBLED SKIMMER ON THE BOTTOM OF THE BASIN WITH THE FLEXIBLE JOINT AT
THE INLET OF THE BAREL PIPE. ATTACH THE FLEXIBLE JOINT TO THE BARREL PIPE AND
POSITION THE SKIMMER OVER THE EXCAVATED PIT OR SUPPORT. BE SURE TO ATTACH TA
ROPE TO THE SKIMMER AND ANCHOR IT TO THE SIDE OF THE BASIN. THIS WILL BE USED
TO PULL THE SKIMMER TO THE SIDE FOR MAINTENANCE.
7. EARTHEN SPILLWAYS - INSTALL THE SPILLWAY IN UNDISTURBED SOIL TO THE GREATEST
EXTENT POSSIBLE. THE ACHIEVEMENT OF PLANNED ELEVATIONS, GRADE, DESIGN WIDTH, AND
ENTRANCE AND EXIT CHANNEL SLOPES ARE CRITICAL TO THE SUCCESSFUL OPERATION OF
THE SPILLWAY. THE SPILLWAY SHOULD BE LINED WITH LAMINATED PLASTIC OR (IMPERMEABLE
GEOTEXTILE FABRIC. THE FABRIC MUST BE WIDE ANE LONG ENOUGH TO COVER THE BOTTOM
AND SIDES AND EXTEND ONTO THE TOP OF THE DAM FOR ANCHORING IN A TRENCH. THE
EDGES MAY BE SECURED WITH 8-INCH STAPLES OR PINS. THE FABRIC MUST BE LONG
ENOUGH TO EXTEND DOWN THE SLOPE AND EXIT ONTO STABLE GROUND. THE WIDTH OF
THE FABRIC MUST BE ONE PIECE, NOT JOINED OR SPLICED; OTHERWISE WATER CAN GET
UNDER THE FABRIC. IF THE LENGTH OF THE FABRIC IS INSUFFICIENT FOR THE ENTIRE
LENGTH OF THE SPILLWAY, MULTIPLE SECTIONS, SPANNING THE COMPLETE WIDTH, MAY BE
USED. THE UPPER SECTIONS) SHOULD OVERLAP THE LOWER SECTIONS) SO THAT WATER
CANNOT FLOW UNDER THE FABRIC. SECURE THE UPPER EDGE AND SIDES OF THE FABRIC IN
A TRENCH WITH STAPLES OR PINS. (ADAPTED FROM "A MANUAL FOR DESIGNING, INSTALLING
AND MAINTAINING SKIMMER SEDIMENT BASINS." FEBRUARY, 1999, J.W. FAIRCLOTH AND SON.)
8. INLETS - DISCHARGE WATER INTO THE BASIN IN A MANNER TO PREVENT EROSION. USE
TEMPORARY SLOPE DRAINS OR DIVERSIONS WITH OUTLET PROTECTION TO DIVERT SEDIMENT
LADEN WATER TO THE UPPER END OF THE POOL AREA TO IMPOVED BASIN TRAP
EFFICIENCY (REFERENCES: RUNOFF CONTROL MESURES AND OUTLET PROTECTION).
9. EROSION CONTROL - CONSTRUCT THE STRUCTURE SO THAT THE DISTURBED AREA IS
MINIMIZED. DIVERT SURFACE WATER AWAY FROM BARE AREAS. COMPLETE THE EMBANKMENT
BEFORE THE AREA IS CLEARED. STABILIZE THE EMERGENCY SPILLWAY EMBANKMENT AND
ALL OTHER DISTURBED AREAS ABOVE THE CREST OF THE PRINCIPAL SPILLWAY IMMEDIATELY
AFTER CONSTRUCTION (REFERENCES: SURFACE STABILZATION).
10. INSTALL POROUS BAFFLES AS SPECIFIED IN PRACTICE 6.65, POROUS BAFFLES.
11. AFTER ALL THE SEDIMENT -PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED,
REMOVE THE STRUCTURE AND ALL THE UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND
WITH THE ADJOINING AREAS AND STABILIZE PROPERLY. (REFERENCES: SURFACE
STABILIZATION).
MAINTENANCE
INSPECT SKIMMER SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT
(ONE-HALF INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. REMOVE SEDIMENT
AND RESTORE THE BASIN TO ITS ORIGINAL DIMENSIONS WHEN SEDIMENT ACCUMULATES TO
ONE-HALF THE HEIGHT OF THE FIRST BAFFLE. PULL THE SKIMMER TO ONE SIDE SO THAT THE
SEDIMENT UNDERNEATH IT CAN BE EXCAVATED. EXCAVATE THE SEDIMENT FROM THE ENTIRE
BASIN, NOT JUST AROUND THE SKIMMER OR THE FIRST CELL. MAKE SURE VEGETATION
GROUWING IN THE BOTTOM IF THE BASIN DOES NOT HOLD DOWN THE SKIMMER.
REPAIR THE BAFFLES IF THEY ARE DAMAGED. RE -ANCHOR THE BAFFLES IF WATER IS FLOWING
UNDERNEATH OR AROUND THEM.
IF THE SKIMMER IS CLOGGED WITH TRASH SND THERE IS WATER IN THE BASIN, USUALLY
JERKING ON THE ROPE WILL MAKE THE SKIMMER BOB UP AND DOWN AND DISLODGE THE DERIS
AND RESORE FLOW. IF THIS DOES NOT WORK PULL THE SKIMMER OVER TO THE SIDE OF THE
BASIN AND REMOVE THE DERRIS. ALSO CHECK THE ORIFICE INSIDE THE SKIMMER TO SEE IF IT
ISCLOGGED; IF SO REMOVE THE DEBRIS.
IF THE SKIMMER ARM OR BARREL PIPE IS CLOGGED, THE ORIFICE CAN BE REMOVED AND THE
OBSTURCION CLEARED WITH A PLUMBER'S SNAKE OR BY FLUSHING WITH WATER. BE SURE AND
REPLACE THE ORIFICE BEFORE REPOSITIONING THE SKIMMER.
CHECK THE FABRIC LINED SPILLWAY FOR DAMAGE AND MAKE ANY REQUIRED REPAIRS WITH
FABRIC THAT SPANS THE FULL WIDTH OF THE SPILLWAY. CHECK THE EMBANKMENT, SPILLWAYS,
AND OUTLET FOR EROSION DAMAGE, AND INSPECT THE EMBANKMENT FOR PIPING AND
SETTLEMENT. MAKE ALL NECESSARY REPAIRS IMMEDIATELY. REMOVE ALL TRASH AND OTHER
DEBRIS FROM THE SKIMMER AND POOL AREAS.
FREEZING WEATHER CAN RESULT IN ICE FORMING IN THE BASIN. SOME SPECIAL PRECAUTIONS
SHOULD BE
TAKEN IN THE WINTER TO PREVENT THE SKIMMER FROM PLUGGING WITH ICE.
BAFFLE (TYP)
oN_
F
EMBANKMENT SIi�Ch� y�
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BAFFLES
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5 ITNWTTIHIRE
FIRBRG '2/ 2�
GROSS SEGTION
p�PE
SUPPORT POST. 24" INTO
BOTTOM OR 51DE
STAKE TO SUPPORT HIRE
MAX. 4' APART
SUPPORT ROPE TO HIRE
TO PREVENT 5A661NO
- COIR MESH OR SIMILAR,
STAPLED OR TRENCHED
INTO BOTTOM OR 5112E
5 FT. I' FREEBOARD
MIN. 6" EMERGENCY 5PILLHAY
1.5 FT.
Q
OUTLET PIPE
BAFFLES
CONSTRUCTION
1. GRADE THE BASIN SO THAT THE BOTTOM IS LEVEL FRONT TO BACK AND SIDE TO SIDE.
2. INSTALL THE COIR FIBER BAFFLES IMMEDIATELY UPON EXCAVATION OF THE BASINS.
3. INSTALL POSTS ACROSS THE WIDTH OF THE SEDIMENT TRAP (PRACTICE 6.62, SEDIMENT FENCE).
4. STEEL POSTS SHOULD BE DRIVEN TO A DEPTH OF 24 INCHES AND SPACED A MAXIMUM OF 4 FEET APART. THE TOP OF THE FABRIC
SHOULD BE A MINIMUM OF 6 INCHES HIGHER THAN THE INVERT OF THE SPILLWAY. TOPS OF BAFFLES SHOULD B A MINIMUM OF 2 INCHES
LOWER THAN THE TOP OF THE EARTHEN EMBANKMENT.
5. INSTALL AT LEAST THREE ROWS OF BAFFLES BETWEEN THE INLET AND OUTLET DISCHARGE POINT. BASINS LESS THAN 20 FEET IN LENGTH
MAY USE 2 BAFFLES.
6. ATTACH A 9 GAUGE HIGH TENSION WIRE STRAND TO THE STEEL POSTS AT A HEIGHT OF 6 INCHES ABOVE THE SPILLWAY ELEVATION
WITH PLASTIC TIES OR WIRE FASTENERS TO PREVENT SAGGING. IF THE TEMPROARY SEDIMENT BASIN WILL BE CONVERTED TO A
PERMANENT STORMWATER BASIN OF A GREATER DEPTH, THE BAFFLE HEIGHT SHOULD BE BASED ON THE POOL DEPTH DURING USE AS
A TEMPORARY SEDIMENT BASIN.
7. EXTEND 9 GAUGE MINIMUM HIGH TENSION WIRE STRAND TO SIDE OF BASIN OR INSTALL STEEL T-POSTS TO ANCHOR BAFFLE TO SIDE OF
BASIN AND SECURE TO VERTICAL END POSTS AS SHOWN IN FIGURE 6.65b.
8. DRAPE THE COIR FIBER MAT OVER THE WIRE STRAND MOUNTED AT A HEIGHT OF 6 INCHES ABOVE THE SPILLWAY ELEVATION. SECURE THE
COIR FIBER MAT TO THE WIRE STRAND WITH PLASTIC TIES OR WIRE FASTENERS. ANCHOR THE MATTING TO THE SIDES AND FLOOR OF
THE BASIN WITH 12 INCH WIRE STAPLES, APPROXIMATELY 1 FOOT APART, ALONG THE BOTTOM AND SIDE SLOPES OF THE BASIN.
9. DO NOT SPLICE THE FABRIC, BUT USE A CONTINUOUS PIECE ACROSS THE BASIN.
10. ADJUSTMENTS MAY BE REQUIRED IN THE STAPLING REUQIREMENTS TO FIT INDIVIDUAL SITE CONDITIONS.
MAINTENANCE
INSPECT BAFFLES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED REPAIRS IMMEDIATELY.
BE SURE TO MAINTAIN ACCESS TO THE BAFFLES. SHOULD THE FABRIC OF A BAFFLE COLLAPSE, TEAR, DECOMPOSE, OR BECOME INEFFECTIVE,
REPLACE IT PROMPTLY.
REMOVE SEDIMENT DEPOSITS WHIN IT REACHES HALF FULL, TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE NEXT RAIN AND TO REDUCE
PRESURE ON THE BAFFLES. TAKE CARE TO AVOID DAMAGING THE BAFFLES DURING CLEANOUT AND REPLACE IF DAMAGED DURING CLEANOUT
OPERATIONS. SEDIMENT DEPTH SHOULD NEVER EXCEED HALF TO DESIGNED STORAGE DEPTH.
AFTER THE CONTRUBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED, REMOVE ALL BAFFLE MATERIALS AND UNSTABLE SEDIMENT
DEPOSIT, BRING THE AREA TO GRADE, AND STABILIZE IT.
TEMPORARY SEDIMENT TRAP
WITH SKIMMER DEWATERINS DEVICE
AND POROUS BAFFLES
NO 5GALE
APPROVALS FOR TRANSCONTINENTAL GAS DRAINAGE EASEMENT WIDTHS:
PIPELINE CORP CROSSING, USACE, AND < 2 Ac: 30' x 50'
NCDENR 404/401 PERMITS WILL BE 2 Ac - 6 Ac: 15' FROM C/L
OBTAINED PRIOR TO ANY CONSTRUCTION 6.01 - 25 Ac: 30' FROM C/L
■
In NIMBI
INK immlI
III ` ` mosill
INS mosol
Ins
ELEVATION
PLAN
ool '�1 L
8" O.C.(TYP.) "
REFER TO CHART
FOR BAR SIZE
H2
B" O.G.(TYP.)
REFER TO CHART
FOR BAR SIZE
GROUND STABILIZATION
SITE AREA DESCRIPTI❑N
TIMEFRAMES
STABILIZATI❑N
TIMEFRAME EXCEPTI❑NS
PERIMETER DIKES, SWALES, DITCHES
7
DAYS
NONE
AND SLOPES
HIGH QUALITY WATERS (HQW) ZONES
7
DAYS
NONE
SLOPES STEEPER THAN 3:1
7
DAYS
IF SLOPES ARE 10' OR LESS
IN LENGTH AND ARE NOT
STEEPER THAN 2:1, 14 DAYS
ARE ALLOWED,
SLOPES 3:1 OR FLATTER
14
DAYS
7 DAYS FOR SLOPES GREATER
THAN 50' IN LENGTH
ALL OTHER AREAS WITH SLOPES
14
DAYS
NONE, EXCEPT FOR PERIMETERS
FLATTER THAN 4:1
AND HQW ZONES
NOTES:
* THIS PRECAST ENDWALL MAY BE USED FOR THE FOLLOWING
STANDARDS: 838.01, 838.11, "S.21, 838.27, 838.33,
630.39, 830.61, 838.57, 638.63 AND 838.69.
* INSTALL PRECAST ENOWALLS WITH ikINGS AND PAY
FOR IN AGCORDANGE WITH SPECIFICATION SECTION 838.
* USE 4000 PSI CONCRETE-
* PROVIDE ALL REINFORCING STEEL WHICH MEETS ASTIR A615
FOR GRADE 60 AND WELDED WIRE FABRIC CONFORMING
TO ASTM AIRS WITH 2" MIN. CLEARANCE.
* PLACE LIFT HOLES OR PINS IN ACCORDANCE WITH
OSHA STANDARD 1926.704.
* PIPE TO BE GROUTED INTO HEADWALL AT JOB SITE BY
CONTRACTOR
* ALL ELEMENTS PRECAST TO MEET ASTM C913.
* WELDED WIRE FABRIC MAY BE SUBSTITUTED FOR REBAR
AS LONG AS THE SAME AREA OF STEEL IS PROVIDED.
* CHAMFER ALL CORNERS 1" OR HAVE A RADIUS OF 1".
NOTE: THE MINIMUM BAR SIZE SHALL BE #5 BARS
AT B" CTS.THE CONTRACTOR WILL HAVE THE OPTION
TO INCREASE THIS BAR SIZE AS NEEDED.
ENDWALL DIMENSIONS
FT.
MINIMUM
MIN./MAX.
MIN.IMAX.
MIN./MAX.
MIN. iMAY.
MIN. ]MAX.
PIPE DIA.
BAA SIZE
HI (FT.
H2(FT.)
❑ (FT.)
W1
W2
1.O
#5 @ 8"
1.2512.00
2.00/3.75
1.25/1.75
3.00/3.75
5.50/6.00
1.25
#5 @ 8"
1.25/2.00
3.0013.75
1.25/2.00
3.5013.75
6.50/6.75
1.50
#5 8"
1.2512.00
3.0014.25
1.50/2.50
3.50/3.76
6.60/6.75
2.0
115 8"
1.6012.50
4.0014.75
1.75/2.50
4.0014.25
7.60/8.25
2.5
#5 8"
2.5013.50
4.0016.00
2.00/3.00
4.5015.5D
10.00/11.50
3.0
#5 @ 8"
3.00/3.50
5.0010.00
2.75f3.50
5.25f5.75
11.50/11.75
3.5
#5 @ 8"
3.25/4.50
6.0016.75
3.25/3.50
6.0016.75
12.00/13.25
4.0
45 @ 8"
3.50/4.50
6.5017.00
3.25/3.50
6.5016.75
13.00/13.25
4.5
#5 0 8"
4.00/5.00
6.5018.50
3.25/4.00
7.00/9.25
13.50/15.75
5.0
#5 @ 8"
4.50/5.00
7.00f8.50
3.25/4.00
7.25/9.25
13.75/15.75
5.5
#5 @ 8"
4.5015.00
7.5018.50
3,25/4.00
7.2519.25
14.00/15.75
6.0
#5 @ 8"
4.5015.00
7.5018.50
3.25/4.00
7.75/9.25
14.7505,75
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06 a
LL
1) DRIVE STEEL POSTS 18' MIN INTO GROUNDi 10' MAX SPACING
2) EXCAVATE A 6' x 6' TRENCH ALONG UPHILL LINE OF POSTS
3) ATTACH WIRE FENCE TO POSTS AND EXTEND BOTTOM OF FENCE
6' INT❑ TRENCH
4) ATTACH FILTER FABRIC TO WIRE FENCE AND EXTEND BOTTOM OF
FABRIC 6' INT❑ TRENCH
5) BACKFILL TRENCH AND COMPACT #57 STONE FIRMLY TO ANCHOR
BOTTOM OF SILT FENCE SO THAT RUNOFF IS FORCED TO GO
THROUGH THE FENCE, NOT UNDER IT
WATER ENTRY UNIT
WITH TRASH SCREEN
❑RIFICE ❑PENING INSIDE
THE H❑RIZ❑NTAL TUBE WITH
A CONSTANT HYDRAULIC
HEAD
1LE 40 PVC PIPE
L OR ARM)
ILE
/ENT
P❑TENTIAL FOR PIPING
CAN OCCUR, PROPER
DESIGN TO MINIMIZE
DISCHARGE AROUND PIPE
MUST OCCUR,
TER ENTRY UNIT
GENERAL NOTES:
1, PROPER DESIGN MUST BE COMPLETED TO MINIMIZE PIPING AROUND DISCHARGE
PIPE,
2, PROPER ❑RIFICE ❑PENING MUST BE SELECTED TO ENSURE POND DRAINS IN
CORRECT AMOUNT OF TIME, M❑DIFICATI❑NS MAY BE REQUIRED IF FIELD
C❑NDITI❑NS WARRANT A CHANGE,
3, EMBANKMENT MUST BE COMPACTED TO DESIGN SPECIFICATI❑NS,
4, EMERGENCY SPILLWAY MUST BE CORRECTLY SIZED AND ER❑SI❑N PR❑TECTI❑N
INSTALLED,
5, EROSION PROTECTION MUST BE INSTALLED ALONG THE EMBANKMENT AND AT
THE DISCHARGE END OF THE PIPE,
6, INSPECT SYSTEM REGULARLY TO ENSURE IT IS FUNCTI❑NING IN A CORRECT
MANNER,
7, EIGHT SIZES OF SKIMMERS ARE AVAILABLE, REFER TO THE FLOW SHEET,
CUT SHEET, AND INSTRUCTI❑NS ON WEB SITE FOR EACH SIZE,
RTHEN EMBANKMENT
-EMERGENCY SPILLWAY
SCHEDULE 40 PVC
PIPE (BARREL OR
ARM)
FLEXIBLE
H❑SEN
END SIDE VIEW
VIEW DISCHARGE PIPE
SCHEDULE 40 (N❑ SCALE)
EAIRCL❑TH S[{IMMER DISCHARGE SYSTEM WITH
EMBANKMENT
PVC VENT
PIPE
L❑AT
L = 1A x DEPTH
TO THEOVERFLOW
MINIMUM LENGTH APPLIES
MAINTAIN DEPRESSI❑N TO -I I I=I I �I I I=
MINIMIZE CHANCE ❑F
SKIMMER BEC❑MING STUCK
DRAWN BY T, R, EVANS
J. W, FAIRCLOTH & SON INC,
W W W,FAIRCLOTHSKIMMER,COM
TELEPHONE, (919> 732-1244
FAX: [phone]
EMAIL: WARREN@FAIRCLOTHSKIMMER,COM
SKIMMER BASIN #1
SKIMMER BASIN #2
SKIMMER BASIN #5
DRAINAGE AREA:
1.412 Act
DRAINAGE AREA:
0.471 Act
DRAINAGE AREA:
1.715 Act
DISTURBED AREA:
155 Act
DISTURBED AREA:
0.50 Act
DISTURBED AREA:
0.44 Act
VOLUME REG2UIRED:
25g4 OF
VOLUME REaUIRED:
540 OF
VOLUME REWIRED:
"ig2 OF
VOLUME PROVIDED:
2611 OF
VOLUME PROVIDED:
54q OF
VOLUME PROVIDED:
Ig45 OF
(561'Lx15'Wx5'D)
(15'Lx5'Wx5'D)
(42' L x IT
H x 2' 0)
EMERGENCY OUTLET:
4' WIDE
EMERGENCY OUTLET:
4' WIDE
EMERGENCY OUTLET:
4' WIDE
SKIMMER SIZE:
4"
SKIMMER SIZE:
1.5"
SKIMMER SIZE:
2.51,
ORI FACE DIAMETER:
0.1511
ORI FACE DIAMETER:
0.5"
ORI FACE DIAMETER:
0.5"
SKIMMER BASIN #4
5KIMMER BASIN #5
SKIMMER BASIN #6
DRAINAGE AREA:
5.51 Act
DRAINAGE AREA:
0.50 Act
DRAINAGE AREA:
0.68 Act
DISTURBED AREA:
2.471 Act
DISTURBED AREA:
0.46 Act
DISTURBED AREA:
0.2"1 Act
VOLUME REQUIRED:
4446 OF
VOLUME REQUIRED:
664 OF
VOLUME REQUIRED:
486 OF
VOLUME PROVIDED:
55111 OF
VOLUME PROVIDED:
8q4 OF
VOLUME PROVIDED:
65g OF
(5TLx25'Wx5'D)
(16'LxTHx5'D)
(25'Lx6'Wx2'D)
EMERSENCY OUTLET:
T WIDf
EMERGENCY OUTLET:
4' WIDE
EMERGENCY OUTLET:
4' WIDE
SKIMMER SIZE:
6"
SKIMMER SIZE:
5"
SKIMMER SIZE:
1.51,
ORI FACE DIAMETER:
I "
ORI FACE DIAMETER:
0.5"
ORI FACE DIAMETER:
0.5"
SKIMMER BASIN
#'►
5KIMMER BASIN
#8
5KIMMER BASIN
#q
DRAINAGE AREA:
1.10 Act
DRAINAGE AREA:
0.21 Act
DRAINAGE AREA:
0.65 Act
DISTURBED AREA:
0.45 Act
DISTURBED AREA:
0.21 Act
DISTURBED AREA:
0.5q Act
VOLUME REQUIRED:
810 OF
VOLUME REQUIRED:
486 OF
VOLUME REaUIRED:
1062 OF
VOLUME PROVIDED:
1165 OF
VOLUME PROVIDED:
4q5 OF
VOLUME PROVIDED:
108q OF
(52'Lx12'Wx2'D)
(II'Lx5'Wx5'D)
(21'LxTHx5'D)
EMERSENGY OUTLET:
4' WIDE
EMERSENGY OUTLET:
4' WIDE
EMERSENGY OUTLET:
4' WIDE
SKIMMER SIZE:
2.5"
SKIMMER SIZE:
1.5"
SKIMMER SIZE:
4"
ORI FACE DIAMETER:
0.51,
ORI FACE DIAMETER:
0.51,
ORI FACE DIAMETER:
0.5"
5KIMMER BA51N #10
SKIMMER BA51N #11
5KIMMER BA51N #12
DRAINAGE AREA:
Ob2 Act
DRAINAGE AREA:
0.51 Act
DRAINAGE AREA:
IACI Act
DISTURBED AREA:
0.56 Act
DISTURBED AREA:
0.26 Act
DISTURBED AREA:
0.55 Act
VOLUME REQUIRED:
664 OF
VOLUME REOUIRED:
504 OF
VOLUME REQUIRED:
5c14 OF
VOLUME PROVIDED:
684 OF
VOLUME PROVIDED:
522 OF
VOLUME PROVIDED:
2265 OF
(15'Lx5'Wx5'D)
(12'Lx5'Wx5'D)
(45'LXIg'WXVD)
EMERSENGY OUTLET:
4' WIDE
EMERGENCY OUTLET:
4' WIDE
EMERGENCY OUTLET:
5' WIDE
SKIMMER SIZE:
2"
SKIMMER SIZE:
1.5"
SKIMMER SIZE:
1.51,
ORI FACE DIAMETER:
0.5"
ORI FACE DIAMETER:
0.5"
ORI FAGS DIAMETER:
0.5"
SKIMMER BASIN #15
SKIMMER BASIN #14
SKIMMER BASIN #15
DRAINAGE AREA:
0.52 Act
DRAINAGE AREA:
2.02 Act
DRAINAGE AREA:
1.511 Act
DISTURBED AREA:
0.52 Act
DISTURBED AREA:
1.5g Act
DISTURBED AREA:
1.25 Act
VOLUME REG2UIRED:
C156 OF
VOLUME REQUIRED:
2662 OF
VOLUME REOUIRED:
2214 OF
VOLUME PROVIDED:
C156 OF
VOLUME PROVIDED:
5060 OF
VOLUME PROVIDED:
2250 OF
(Iq'Lx6'Wx5'D)
(42'Lx15'Wx5'D)
(55'Lx12'Wx5'D)
EMERSENGY OUTLET:
4' WIDE
EMERSENGY OUTLET:
5' WIDE
EMERSENGY OUTLET:
4' WIDE
SKIMMER SIZE:
4"
SKIMMER SIZE:
2"
SKIMMER SIZE:
4"
ORI FAGS DIAMETER:
0.5"
ORI FACE DIAMETER:
1.0"
ORI FACE DIAMETER:
1 1=111 111 111 111 111 111 111 .``"""""'•.
-=1-"'-- 1=11 == 1=1 1=1 1=1 1=1 1=1 1=1 1=1 1=1 1= N CAi���
III=III � �
BACKFILL 6" x 6"
TRENCH HI H #5`1 STONE
SEAL
10727
.2 =�
REV15EV: 4/24/01 �ii�� FHGI N
.'
�0��
-1
TEMPORARY SILT FENCE �,;s,z,c�P
NITS
/��; q
REVISIONS: 8/26/2020
6/18/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
6/18/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
6/09/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
s/9R/9n9n - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
4' MAX
ROOK DAM PLACED IN
FRONT OF HIRE FENCE.
MIN SIZE: d50 = 9"
HIRE FENCE
TYPICAL SILT FENCE
HIRE FENCE
SLOpp ROCK DAM 3 SILT FENCE POST
d50 = aP MIN 1
1=III=1TI=1TI=1 I 1- -115111-I I=11=1 I:111
ROCK DAM IN SILT FENCE DETAIL
iuie=
EROSION CONTROL DETAILS (I of 3)
OAK RIDGE LAND I NS
2406-A OAK RIDGE ROAD
OAK RI DOE TOWNSHIP, W I LFORD COUNTY
OAK RI DOE, NORTH CAROL I NA
DATE: 5/26/2020 I SCALE: NONE ° I SHEET: 15 of 17
HUGH CREED ASSOCIATES, INC, PA
CONSULTING ENGINEERS AND SURVEYORS
PO BOX 9623 PHONE: �336� 275-9826
1306 W WENDOVER AVE OR 336 275-8084
GREENSBORO, NC 27408
FIRM LICENSE #C-0551 E-MAIL: hca®hughcreedassociates.com

ado A
PIPE OUTLET TO FLAT AREA
( NO WELL-DEFINED CHANNEL)
PLAN
blanketFilter
PIPE OUTLET TO WELL-DEFINED CHANNEL
PLAN
A
Filter
blanket
Notes
I. La is the length of the riprap
apron.
2. d=1.5 times the maximum stone
diameter but not less than 6".
3. In a well-defined channel ex-
tend the apron up the channel
banks to an elevation of b"
above the maximum tail water
depth or to the top of the bank,
whichever is less.
4. A filter blanket or filter fabric
should be installed between
the riprap and soil foundation.
GONSTRUGTION SPEGIiFIGATION5
I. Ensure that the subgrade for the filter and riprap follows the required lines
and grades shown in the plan. Gompact and fill required in the subgrade to the
density of the surrounding undisturbed material. Low areas in the subgrade on
undisturbed soil may also be filled by increasing the riprap thickness.
2. The riprap and gravel filter must conform to the specified grading limits
shown on the plans.
3. Filter cloth, when used, must meet design requirements and be properly
protected from punching or tearing during installation. Repair any damage by
removing the riprap and placing another piece of filter cloth over the damaged
area. All connecting joints should overlap a minimum of I ft. If the damage is
extensive, replace the entire filter cloth.
4. Riprap may be placed by equipment, but take care to avoid damaging the filter.
5. The minimum thickness of the riprap should be 1.5 times the maximum stone
diameter.
6. Riprap may be field stone or rough quarry stone. It should be hard, angular,
highly weather -resistant and well graded.
-7. Construct the apron on zero grade with no overfall at the end. Make the top
of the riprap at the downstream end level with the receiving area or slightly
below it.
8. Ensure that the apron is properly aligned with the receiving stream and
preferably straight throughout its length. If a curve is needed to fit site
conditions, place it in the upper section of the apron.
9. Immediately after construction,stabillze all disturbed areas with vegetation
(Practices 6.10, rarlporary 5--eding, and 6.11, Permanent 5eeding).
MAINTENANCE
Inspect riprap outlet structures after heavy rains to see if any erosion around or
below the riprap has taken place or if stones have been dislodged. Immediately
make all needed repairs to prevent further damage.
OUTLET STABILIZATION STRUCTURE
NTS
4" , TEMPORARY LINER
STAPLES
SPACING I
3 STAPLES 1 1/2' TO 6'
TO SRTT AS NEEEDED
NOTE:
UPSTREAM LINER TO
OVERLAP OVER
DOWNSTREAM LINER.
STAPLE IF NECE55AR(
TO STABILIZE.
STAPLES 10"
5PAG I N6 1
3
NOTE:
UPSTREAM LINER TO
OVERLAP OVER
DOWNSTREAM LINER.
STAPLE IF NECESSARY
TO STABILIZE.
SHALE DETAIL
HI TH TEMPORARY LINER
NT5
pr R-/-
TYPICAL STAPLE
#8 GAUGE WIRE
11/2"
TEMPORARY LINER
5TAPLE5 1 1/2' TO 6'
APART AS NEEDED
TO STABILIZE
TYPICAL STAPLE
SHALE DETAIL #8 6AU6E WIRE
HI TH TEMPORARY LINER
NT5
2"
�GGR , CO
Gonstruction 5oecificcition5
I. Clear the entrance and exit area of all vegetation, roots, and other objectionable
material and properly grade it.
2. Place the gravel to the specific grade and dimensions shown on the plans, and
smooth it.
3. Provide drainage to carry water to a sediment trap or other suitable outlet.
4. Use geotextile fabrics because they improve stability of the foundation in locations
subject to seepage or high water table.
Maintenance
Maintain the gravel pad in a condition to prevent mud or sediment from leaving the
construction site. This may require periodic topdressing with 2-inch stone. After each
rainfall, inspect and structure used to trap sediment and clean it out as necessary.
Immediately remove all objectionable materials spilled, washed, or tracked onto public
roadways.
TEMPORARY GRA\/EL CONSTRUCTION ENTRANCE
SWALE INFO:
ALL 5WALE5 TO BE PROTECTED WITH CURLED WOOD
MAT, AND BE " V" CHANNEL UNLESS NOTED BELOW:
SWALE 6 (COKELY CT) 5TA 0+50 TO 5TA 2+50
SYNTHETIC MAT (2.0 Ib/sf) - TEMPORARY
SWALE 13 (COKELY CT) 5TA 0+50 TO 5TA 2+50
SYNTHETIC MAT (2.0 Ib/sf) - TEMPORARY
SWALE 20 (SHADOW LN) 5TA 12+15 TO 5TA 14+50
a" RIP -RAP (3.0 Ib/sf) - PERMANENT
5WALE 53 (FALCON'S TRAIL) 5TA II+65 TO 5TA 12+45
a" RIP -RAP (3.0 Ib/sf) - PERMANENT,
I.O' BOTTOM WIDTH
56ALE 41 (FALCON'S TRAIL) 5TA 24+75 TO END
SYNTHETIC MAT (2.0 Ib/sf) - TEMPORARY
SWALE 42 (FALCON'S TRAIL) 5TA 24+75 TO END
a" RIP -RAP (3.0 Ib/sf) - PERMANENT,
1.0' BOTTOM WIDTH
In channels, roll out strips of netting parallel to
direction of flow and over the protective mulch.
Anchor netting in
a 6-inch trench
over Join strips byanchoring
overlapping.d
IN5TALLATION OF NETTING AND MATTING
Products designed to control erosion should be installed in accordance with
manufacturer's instructions. Any mat or blanket -type product used as a protective
mulch should provide cover of at least 30% of of the surface where it is applied.
Installation is illustrated in Figure 6.14a.
I. Apply lime, fertilizer and seed before laying net or mat. If open -weave
netting is used, lime may be incorporated before installing the net and fertilizer
and seed sprayed afterward.
2. Start laying the net from the top of the channel or slope and unroll it down
the gc�rade. Allow netting to lay loosely on the soil but without wrinkles - do not
stretch.
3. To secure the net, bury the upslope end in a slot or trench no less than 6-inche5
deep, cover with soil, and tamp firmly as shown in Figure 6.14a. Staple the net every
12 inches across the top end and every 3 ft around the edges and bottom. Where
2 strips of net are laid side by side, the adjacent edges should be overlapped
3 inches and stapled together. Each strip of netting should also be stapled down
the center, every 3 ft. Do not stretch the net when applying staples.
4. To join two strips, cut a trench to anchor the end of the new net. Overlap the
and of the previous roll 12 inches, as shown in Figure 6.14a, and staple every 12 inches
just below the anchor slot.
MAINTENANCE
Inspect all mulches periodically, and after rainstorms to check for rill erosion,
dislocation, or failure. Where erosion is observed, apply additional mulch. If
washout occurs, repair the slope grade, reseed, and reinstall mulch. Continue
inspections until vegetation is firmly established.
J
rONE
SEDIMENT CONTROL STONI
NOTE:
STRUCTURAL STONE SHALL BE
GLA55 B 5TONE. PLAN VIEW
SEDIMENT CONTROL STONE
SHALL BE #57 STONE.
DIMENSIONS ARE MINIMUM AGGEPTABLE
UNLE55 OTHERWI5E 5PEGIFIED
BY THE ENGINEER.
STRUCTURAL
STONE
12" MIN. I' 2' MIN. 12" MI� ROADWAY
SHOULDER
DIVERSION POINT - MAX. 36" PIPE
FLOW ►
� 8
SEDIMENT GONTROL STONE
SECTION "A -A"
ROCK PIPE INLET SEDIMENT TRAP
TYPE "All
NO 5GALE
SELF -INSPECTION REPORT FOR LAND DISTURBING ACTIVITY AS REQUIRED BY NCGS 113A-54.1
PHASE OF APPROVED EROSION AND SEDIMENTATION CONTROL PLAN
DATE
SIGNATURE
(LANDOWNER, FINANCIALLY RESPONSIBLE PARTY, OR AGENT)
INSTALLATION OF EROSION CONTROL DEVICES AND SEEDING
FILL AND SLOPES COMPLETED (FINE GRADES ESTABLISHED)
INSTALLATION OF SITE UTILITIES
STABILIZATION OF BUILDING PAD AND PARKING AREAS
FINE GRADES ACHIEVED, OBTAINED BUILDING C/O
VEGETATION ESTABLISHED; REMOVAL OF EROSION CONTROL MEASURES
CLOSING OF PERMNIT; FINAL INSPECTION
RIP -RAP OUTLETS
DESIGNED PER NCDNER
ERO51 ON $ 5ED I MENTATI ON
CONTROL MANUAL U51 NO
NEW YORK DOT D I551 PATOR
METHOD (010 4 V 10)
12" RGP
4'Lx3'Wxl2" DEEP
d50 = 4" GLA55 A RIP -RAP
I5" RGP
5'Lx3.75'Nx12" DEEP
d50 = 4" GLASS A RIP -RAP
18" RGP
6'Lx4.5'Wxl2" DEEP
d50 = 4" GLASS A RIP -RAP
24" RGP (ZONE I
8'Lx6'Wxl2" DEEP
d50 = 4" GLA55 A RIP -RAP
24" RCP (ZONE 2)
12'Lx6'Wx18" DEEP
d50 = 8" GLASS B RIP -RAP
50" RGP
I5'Lx7.5'Wx0" DEEP
d50 = 8" GLASS B RIP -RAP
36" RGP (ZONE 2)
IS'Lxa'Wx18" DEEP
d50 = 8" GLA55 B RIP -RAP
36" RGP (ZONE 3)
24'Lxa'Wx24" DEEP
d50 = 10" GLASS I RIP RAP
42" RGP
28'Lx10.5'Wx24" DEEP
d50 = 10" GLA55 I RIP -RAP
48" RGP
52'Lx 12'Nx24" DEEP
d50 = 10" GLA55 I RIP -RAP
54" RGP (ZONE 3)
36'x13.5'x24" DEEP
d50 = 10" GLASS I RIP -RAP
60" RGP (ZONE 3)
40'x I5'x24" DEEP
d50 = 10" GLASS I RIP -RAP
54" RGP (ZONE 5)
45'x135x36" DEEP
d50 = 14" GLA55 2 RIP -RAP
60" RGP (ZONE 5)
5O'x15'x36" DEEP
d50 = 14" GLASS 2 RIP -RAP
PIPE CHART
ELEVATIONS
PIPE
SIZE/TYPE
INV IN
INV OUT
LEGNTH
SLOPE
1
011 RGP
q 14.3a'
a 14.16
45.5'
0.50%
2
I8" RGP
q I5.a6'
Cl 11.53'
28.5'
5.55%
II
I8" RGP
883.88'
551.15,
43.4'
6.34%
14
50" RCP
8aa.53'
8a 1.17'
163.6'
5.11410
15
15" RGP
gO1.a8'
Sa I.17'
70.7'
15.50%
IS
IS" RGP
8ci7.al'
8a4.28'
63.3'
5.74%
21
42" RCP
880.50'
872.20'
124.0'
6.&C1%
22
15" RGP
Sa2.27'
873.00'
76.3'
25.5%
23
IS" RGP
884.81'
552.50'
54.1'
4.27%
PIPES 5, 6, 7, AND 16 HAVE BEEN OMITTED.
ALL OTHER PIPES NOT SHOWN ARE TO BE LAID "AT GRADE"
GENERAL PLAN NOTES
1. SOIL EROSION CONTROL DEVICES MUST BE INSTALLED INITIALLY AFTER THE GRADING PERMIT
IS ISSUED AND PRIOR TO CLEARING AND GRUBBING. EROSION CONTROL STAFF WILL CHECK
THESE DEVICES FOR PROPER INSTALLATION AND COMPLIANCE WITH THIS PLAN. A DEVICE
RELEASE IS REQUIRED BEFORE THE ISSUANCE OF ANY COMMERCIAL BUILDING PERMIT.
2. DURING DEVELOPMENT OF THE SITE, THE PERSON RESPONSIBLE FOR THE LAND DISTURBING
ACTIVITY SHALL INSTALL AND MAINTAIN ALL TEMPORARY AND PERMANENT EROSION AND
SEDIMENTATION CONTROL MEASURES AS REQUIRED BY THE APPROVED PLAN OR BY ANY
PROVISION OF THE GUILFORD COUNTY DEVELOPMENT ORDINANCE AND APPLICABLE TOWN
ORDINANCES. ADDITIONAL DEVICES WILL BE REQUIRED BY THE EROSION CONTROL INSPECTOR,
IF NECESSARY.
3. IF FILL MATERIALS ARE BEING BROUGHT ONTO THIS PROPERTY OR IF WASTE MATERIALS
ARE TAKEN FROM THIS PROJECT, THIS INFORMATION MUST BE DISCLOSED AND SHOWN ON
THE EROSION CONTROL AND GRADING PLAN. BORROW AREAS AND DUMP SITES ARE
CONSIDERED TO BE PART OF THIS PLAN.
4. UNDER THE GUILFORD COUNTY SOIL EROSION AND SEDIMENTATION CONTROL ORDINANCE
(AND APPLICABLE TOWN ORDINANCES); AGENTS, OFFICIALS, OR OTHER QUALIFIED PERSONS
ARE AUTHORIZED TO PERIODICALLY INSPECT THE SITES OF LAND DISTURBING ACTIVITIES.
OBSTRUCTING, HAMPERING OR INTERFERING WITH SUCH INSPECTIONS CARRIES A UP TO
$5000 PER DAY CIVIL PENALTY. THE INSTIGATION OF THIS CIVIL PENALTY REQUIRES NO
PRIOR NOTICE.
5. IN AN EFFORT TO MINIMIZE EROSION AND EXPOSURE TIME, EASEMENT AREAS SHALL NOT
BE GRUBBED OR GRADED UNTIL UTILITIES ARE READY TO BE INSTALLED. ALSO, THE IMMEDIATE
SEEDING OF DISTURBED EASEMENT AREAS AFTER UTILITIES ARE INSTALLED WILL ALSO
ELIMINATE MANY PROBLEMS. EASEMENT AREAS WHICH CROSS OR ARE ADJACENT TO
WATERCOURSES SHOULD RECEIVE SPECIAL CONSIDERATION.
6. NO LAND DISTURBING ACTIVITY SHALL BE PERMITTED IN PROXIMITY TO A LAKE OR
NATURAL WATERCOURSE UNLESS A BUFFER ZONE IS PROVIDED ALONG THE MARGIN
OF THE WATER BODY OF SUFFICIENT WIDTH TO CONFINE VISIBLE SILTATION WITHIN
THE 25% OF THE BUFFER ZONE NEAREST THE LAND DISTURBING ACTIVITY.
7. SIDE DITCHES 2% OR STEEPER SHALL BE RIP -RAPPED; OR SEEDED AND STABILIZED
WITH EXCELSIOR MATTING (OR OTHER APPROVED MATERIAL); OR STABILIZED BY ANY
OTHER METHOD APPROVED BY THE COUNTY SOIL EROSION CONTROL INSPECTOR.
8. IF A PERMANENT POND IS USED AS A SEDIMENT CONTROL DEVICE, OR DESIGNATED AS A
PERMANENT WATER QUALITY POND, IT MUST BE CLEANED OF SEDIMENT WHEN HALF FULL.
IT MUST ALSO BE CLEANED OUT TO DESIGN VOLUME; ENGINEERING CERTIFICATION OF
COMPLETION SUBMITTED, AND FINAL INSPECTION PERFORMED BY COUNTY STAFF BEFORE
THE GRADING PERMIT IS FINALIZED.
9. CONSTRUCTION ACTIVITIES DISTURBING ONE OR MORE ACRES WILL BE ISSUED A NPDES
STORM WATER DISCHARGE PERMIT AS REQUIRED BY THE FEDERAL CLEAN WATER ACT.
SECTION B OF THIS PERMIT REQUIRES THE FINANCIALLY RESPONSIBLE OWNER(S) TO
PERIODICALLY INSPECT ALL SEDIMENT & EROSION CONTROL DEVICES, AND TO KEEP
KEEP A RECORD OF THESE INSPECTIONS. FURTHERMORE, THE NORTH CAROLINA DEPARTMENT
OF NATURAL RESOURCES DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES REQUIRES
THE FINANCIALLY RESPONSIBLE OWNER(S) TO SELF -INSPECT THE SITE AT VARIOUS PHASES
OF DEVELOPMENT. THESE PHASES ARE OUTLINED ON THE COMBINED SELF -MONITORING
AND INSPECTION FORM.
10. THE ANGLE FOR GRADED SLOPES AND FILLS SHALL BE NO GREATER THAN THE ANGLE
THAT CAN RETAIN VEGETATIVE COVER OR OTHER ADEQUATE EROSION CONTROL DEVICES OR
STRUCTURES. THE NPDES PERMIT REQUIRES THAT PERIMETER SLOPES, BERMS, SWALES,
DITCHES, SLOPES STEEPER THAN 3:1, AND AREAS WITHIN HIGH WATER QUALITY (HWQ)
ZONES TO BE SEEDED WITHIN 7 DAYS. SLOPES LESS THAT 10 FEET IN LENGTH AND ALL
OTHER AREAS MUST BE SEEDED WITHIN 14 DAYS AFTER FINAL GRADE IS ESTABLISHED.
11. THE OWNER(S) IS RESPONSIBLE FOR THE LONG TERM MAINTENANCE OF GROUND COVER
ON THE PROPERTY. GROUND COVER MUST BE MAINTAINED TO A DEGREE THAT PREVENTS
SOIL EROSION AND SEDIMENTATION AT ALL TIMES.
12. ACCEPTANCE AND APPROVAL OF THIS PLAN IS CONDITIONED UPON THE PROPERTY OWNER(S)
COMPLIANCE WITH FEDERAL AND STATE WATER QUALITY LAWS, REGULATIONS, AND RULES.
IN ADDITION, LOCAL TOWN OR COUNTY ORDINANCES OR RULES MAY ALSO APPLY TO THIS
LAND DISTURBING ACTIVITY. THIS APPROVAL DOES NOT SUPERSEDE ANY OTHER PERMIT OR
APPROVAL.
13. NO TEMPORARY EROSION CONTROL MEASURE(S) MAY BE REMOVED WITHOUT APPROVAL
FROM THE EROSION CONTROL INSPECTOR. DEVICES REMOVED WITHOUT APPROVAL OF THE
INSPECTOR MAY RESULT IN ENFORCEMENT ACTIONS, INCLUDING DEVICES BEING REPLACED
TO APPROVED PLAN SPECIFICATIONS.
..0111ill, lots,
N CARp� •0
SEAL
10727
:�O F 0
°IN .�
'S•Z.����
REVISIONS: 8/26/2020
6/18/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
6/18/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
6/09/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
5/26/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
4/30/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
APPROVALS FOR TRANSCONTINENTAL GAS DRAINAGE EASEMENT WIDTHS:
PIPELINE CORP CROSSING, USACE, AND < 2 Ac: 30' x 50'
NCDENR 404/401 PERMITS WILL BE 2 Ac - 6 Ac: 15' FROM C/L
OBTAINED PRIOR TO ANY CONSTRUCTION 6.01 - 25 Ac: 30' FROM C/L
EROSION CONTROL DETAILS (2 of 3)
OAK RIDGE LAND I NG
2406-A OAK RIDGE ROAD
OAK RIDGE TOWNSHIP, W I LFORD COUNTY
OAK RI DOE, NORTH CAROL I NA
DATE: 5/26/2020 I SCALE: NONE 0 I SHEET: 16 of 17
HUGH CREED ASSOCIATES, INC, PA
CONSULTING ENGINEERS � AND SURVEYORS
PO BOX 9623 PHONE: [phone]
1306 W WENDOVER AVE OR �336 275-8084
GREENSBORO, NC 27408
FIRM LICENSE #C-0551 E-MAIL: hca®hughcreedassociates.com

approvrad
dewatertng device
stream
idlverslon pumps
discharge hoses P intake
P dawatering pump hose
flaw fr
ter: intake Close HOW
sediment dike clean water dike sump -hale
{12" to 18" deep
work area 2' dia.)
pumps should discharge length not to exceed
onto a stable velocity that which can be
dissipater made of rip rap compieted In one day
or sandl aws
SECTION A -A
u r a}renrioos shIia ry
base flow + t Pout
work area (2 foot minirriurn)
� f
cross section of sandbag dike
PUMP AROUND DETAIL
NOTES:
1, PUMP AROUND DIKES SHALL NOT BE SET OUTSIDE OF THE DISTUREBEDAMPACT
LIMITS SHOWN ON THE PLANS.
z INS I ALL PUMP -AROUND DIVER16ON AND DEWATER THE CONSTRUCTION 700E
THROUGH THE DEWATERING DEVICE, THE CONTRACTOR SHALL STAGE THE LIMITS OF
THE PUMP -AROUND FLOW DIVERSION TO DEWATER ONLY THAT SECTION SCHEDULED
FOR THAT DAYS WORK. AT THE END OF EACH WORK DAY, THE WORK AREA SHALL BE
STABILIZED, THE PUMP AROUND PRACTICE REMOVED, AND THE FLOW RESTORED TO
THE CHANNFI . MRK SHALL BE COMPLETED ONLY DURING FOREC'.AST RERIODS OF
DRY WEATHER,
STREAM
FLOW
DEWATERING
PIPE
PUMP
FLOW
TERING PIPE
J�
INSTALL SANDBAGS)
STORM
DRAIN
TO STOP FLOW
J
w
Q
��
>
Jw
�
Q
[If
C�
C)
U
0
o
Q
w
GONTRAGTOR 15 TO
w
o
NOTIFY EROSION
w
CONTROL INSPECTOR
BEFORE ANY STREAM
PLAN VIEW
DISTURBANCE OCCURS.
SANDBAGS
INLET PIPE -�
PUMP
STORM DRAIN
SIDE VIEW
PLAN VIEW
straw bale dike or berm
[rft t1,8-tri)
minimum
3
minilnum
I 1
r A,
r�---- -- 3- it
(}_9 r
SECTION A -A
L5 it
(0.15 m)
flow
Stone outlet
structure
2.1
{H _V
~ tNter fabric
to 6--in (10 to
15 cm) riprap
SEMON B--B
2 to 3-ft (0.6 to 0.9-m)
re bar or stakes for
straw LIMES
4-In (10-cm3
minimum depth
DEWATERING BASIN DETAIL
NOTES:
1.
PRIOR TO INSTALLATION OF
SANDBAGS, CONTRACTOR TO
ENSURE ALL MATERIALS ARE ON -
SITE AND READY FOR INSTALLATION.
WEATHER CONDITIONS SHOULD BE A
STREAM
MINIMUM OF FIVE DAYS AFTER ANY
FLOW
RAIN EVENT AND NO FORECAST OF
RAIN FOR 48-HOURS AFTER
INSTALLATION BEGINS. TOTAL
INSTALLATION TIME SHOULD BE LESS
TEMP.
THAN EIGHT HOURS.
STONE DAM
RIP -RAP
2,
INSTALL SANDBAGS TO DEWATER
OUTLET
CONSTRUCTION AREA.
3.
INSTALL PUMP AND DEWATERING
LINES.
4.
CUT OUT STREAMBED AND INSTALL
RIP -RAP OUTLET WITH TOP AT
EXISTING STREAMBED LEVEL.
INSTALL TEMPORARY STONE DAM
AND FILTER FABRIC.
5.
BEGIN PUMPING AND CONTINUE
PUMPING DURING STORM DRAIN
INSTALLATION.
6.
CUT DITCH FOR STORM DRAIN PIPE
WITH BACKHOE. LAY STORM DRAIN
PIPE ONE FOOT BELOW STREAMBED
AND INSTALL ENDWALL.
7.
IMMEDIATELY REMOVE SANDBAGS TO
DIVERT FLOW THROUGH STORM
DRAIN PIPE. SPREAD OUT STONE
RIP -RAP
DAM KEEPING RIP -RAP OUTLET
OUTLET
LEVEL WITH EXISTING
TEMP.
STREAMBEAD.
STONE
8-
SEED CONSTRUCTION SITE AS NEED
TEMPORAR`I' STREAM
GROSS 1 NO FOR
STORM DRAIN INSTALLATION
NO SCALE
I
3-4t 10,9 m)
mi
nimum
-L
s
SEAL
10727
o F O=
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REVISIONS: 8/26/2020
6/18/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
6/18/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
6/09/2020 - PILOT ENVIRONMENTAL REVIEW COMMENTS - TML
5/26/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
4/30/2020 - TOWN OF OAK RIDGE STORMWATER REVIEW COMMENTS - TML
APPROVALS FOR TRANSCONTINENTAL GAS DRAINAGE EASEMENT WIDTHS:
PIPELINE CORP CROSSING, USACE, AND < 2 Ac: 30' x 50'
NCDENR 404/401 PERMITS WILL BE 2 Ac - 6 Ac: 15' FROM C/L
OBTAINED PRIOR TO ANY CONSTRUCTION 6.01 - 25 Ac: 30' FROM C/L
EROSION CONTROL DETAILS (3 of 3)
OAK RI V6r= LANV I NS,
2406-A OAK RIDGE ROAD
OAK RIDGE TOWNSHIP, W I LFORD COUNTY
OAK RI DOE, NORTH CAROL I NA
1 DATE: 5/26/2020 1 SCALE: NONE 1 SHEET: 17 of 17 1
HUGH CREED ASSOCIATES, INC, PA
CONSULTING ENGINEERS � AND SURVEYORS
PO BOX 9623 PHONE: [phone]
1306 W WENDOVER AVE OR �336 275-8084
GREENSBORO, NC 27408
FIRM LICENSE #C-0551 E—MAIL: hca®hughcreedassociates.com

Pipe Location: 21 Oak Ridge Landing
Area (Ac):
Paved Areas:
0.000 Ac
Multi-family/Industrial:
0.000 Ac
Rural Single Family:
25.000 Ac
Parks/Cem
0.000 Ac
TOTAL: 25.000 Ac
C:
Paved Areas
0.000 /
25.000
0.95 =
0.0000
Multi-family/Ind.
0.000 /
25.000 *
0.80 =
0.0000
Rur. Sing. Fam.
25.000 /
25.000 *
0.40 =
0.4000
Parks/Cem.
0.000 /
25.000 *
0.20 =
0.0000
TOTAL C:
0.4000
in/hr :
Remote Elev.:
Design Elev.:
Diff. Elevation:
0
Length of travel:
Tc:
10 min.
Intensity:
10 yr:
5.48
25 yr:
5.89
Q: (C*I*A)
54.800 cfs
10 yr:
58.900 cfs
25 yr:
Previous Run:
0.000 cfs
10 yr:
0.000 cfs
25 yr:
TOTAL Q:
54.800 cfs
10 yr:
58.900 cfs
25 yr:
GIVEN SLOPE:
0.50%
25 yr:
REQUIRED D:
39.09 " RCP
49.20 " CMP
GIVEN DIAM.:
42 "
25 yr:
REQ. SLOPE:
0.34% RCP
1.16% CMP
USE
42 " RCP
25 yr:

Pipe Location: 22 Oak Ridge Landing
Area (Ac):
Paved Areas:
0.000
Ac
Multi-family/Industrial:
0.000
Ac
Rural Single Family:
0.960
Ac
Parks/Cem
0.000
Ac
TOTAL: 0.960 Ac
C:
Paved Areas
0.000 /
0.960
0.95 =
0.0000
Multi-family/Ind.
0.000 /
0.960
0.80 =
0.0000
Rur. Sing. Fam.
0.960 /
0.960
0.40 =
0.4000
Parks/Cem.
0.000 /
0.960
0.20 =
0.0000
TOTAL C:
0.4000
in/hr :
Remote Elev.:
Design Elev.:
Diff. Elevation:
0
Length of travel:
Tc:
10 min.
Intensity:
10 yr:
5.48
25 yr:
5.89
Q: (C*I*A)
2.104 cfs
10 yr:
2.262 cfs
25 yr:
Previous Run:
0.000 cfs
10 yr:
0.000 cfs
25 yr:
TOTAL Q:
2.104 cfs
10 yr:
2.262 cfs
25 yr:
GIVEN SLOPE:
0.50%
25 yr:
REQUIRED D:
11.51 " RCP
14.49 " CMP
GIVEN DIAM.:
15 "
25 yr:
REQ. SLOPE:
0.12% RCP
0.42% CMP
USE
15 " RCP
25 yr:

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ® Streams - tributaries ❑ Buffers
❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a.
2b.
2c.
2d.
2e.
2f.
Wetland impact
Type of jurisdiction
number —
Type of impact
Type of wetland
Forested
(Corps - 404, 10
Area of impact
Permanent (P) or
(if known)
DWQ — non-404, other)
(acres)
Temporary T
W1 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W2 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W3 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W4 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W5 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W6 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
2g. Total wetland impacts
2h. Comments: Wetland impacts are not proposed.
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a.
3b.
3c.
3d.
3e.
3f.
3g.
Stream impact
Type of impact
Stream name
Perennial
Type of jurisdiction
Average
Impact
number -
(PER) or
(Corps - 404, 10
stream
length
Permanent (P) or
intermittent
DWQ — non-404,
width
(linear feet)
Temporary (T)
(INT)?
other)
(feet)
S1 ®P ®T
Culvert/Rip-
Rap/Pump
Unnamed
® PER
❑INT
® Corps
❑DWQ
4
139.2/28/10
Around
S2 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S3 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S4 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S5 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S6 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
3h. Total stream and tributary impacts
139.2/28/10
3i. Comments: The proposed stream crossing will permanently impact 139.2 linear feet of stream from culvert fill (124.2 linear
feet from the culvert and 15 linear feet from indirect impact) and 28 linear feet of stream associated with rip -rap that is to be
keyed in to existing stream banks (bed to be left alone). Additionally, 10 linear feet of stream channel will be temporarily
impacted associated with a coffer dam/pump around (this impact is in area considered indirect loss).
Page 5 of 12
PCN Form — Version 1.3 December 10, 2008 Version

a IV �
P I L O T E N V I R O N M E N T A L, I N C
September 10, 2020
Mr. David Bailey
U.S. Army Corps of Engineers, Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Reference: Request for Review and Comment
Detailed Schweinitz's Sunflower and Small Whorled Pogonia Survey Report
Oak Ridge Subdivision
2408 Oak Ridge Road
Oak Ridge, Guilford County, North Carolina
Pilot Project 3962.2
Dear Mr. Bailey:
Pilot Environmental, Inc. (Pilot) is requesting your review and comment concerning our findings
for the detailed survey of Schweinitz's sunflower (Helionthus schweinitzii) and Small Whorled
Pogonia (Isotria medeoloides) conducted at the above -referenced site. The site is depicted on
the attached USGS Topographic Map (Drawing 1) and T&E Survey Map (Drawing 2).
Background
Pilot previously submitted a Pre -Construction Notification (PCN) to your office requesting a
Nationwide Permit 29 Verification. We received a response e-mail from Olivia Munzer with the
NC Wildlife Resources Commission dated July 22, 2020. The e-mail indicates that based on her
review of the PCN, suitable habitat for Schweinitz's sunflower and small whorled pogonia habitat
appear to be present within the area of impact. Following Ms. Munzer's e-mail, we received an
email from you (dated July 27, 2020) indicating that a pedestrian survey should be conducted
within a 100-foot radius of the footprint of proposed impacts to waters of the US. A summary of
the species/habitat description, our methodology and our findings is provided below.
Species/Habitat Description
Schweinitz's sunflower (Helionthus schweinitzii)
Description: Schweinitz's sunflower is a perennial that regularly grows approximately 6.5 feet
tall (though it can be shorter if young or injured) and can occasionally reach heights of 16 feet. It
has thickened roots that are used by the plant to store starch. The stem is purplish in color, and
the upper third bears secondary branches at 45-degree angles. The leaves are arranged in pairs
on the lower part of the stem but usually occur singly (or alternate) on the upper parts. Leaves
PO Box 128, Kernersville, NC 27285
www.pilotenviro.com

Detailed Schweinitz's Sunflower and Small Whorled Pogonia Survey Report
Pilot Project 3962.2
September 10, 2020
are attached to the stem at right angles, and the tips of the leaves tend to droop. The leaves are
thick and stiff, with a rough upper surface. The upper leaf surfaces have broad spiny hairs that
are directed toward the tip and soft white hairs cover the underside. The plant produces small
yellow flowers from late August until frost. This species is able to colonize through the dispersal
of seeds that readily germinate without a dormant period.
Habitat: Schweinitz's sunflower occurs in full to partial sun and is found in areas with poor soils,
such as thin clays that vary from wet to dry. It is believed that this species once occurred in
natural forest openings or grasslands. Many of the remaining populations occur along roadsides.
Small Whorled Pogonia (Isotria medeoloides)
Description: Small -whorled pogonia has a greenish -white stem that grows between 3 —13 inches
(7.6 - 33 centimeters) tall. It gets its common name from the five or six grayish -green leaves that
are displayed in a single whorl around the stem. When the leaves are well developed, a single
flower or sometimes a flower pair rises from the center of the circle of leaves. The flowers are
yellowish -green with a greenish -white lip. Each flower has three sepals of equal length that
spread outward. The flowers are scentless, lack nectar, and are primarily self -pollinating. It
produces fruit which ripens in the fall. The seeds contain very little food reserves and therefore
need to fall on soil containing mycorrhizal fungi in order for the seed to germinate and seedlings
to become established. An over -wintering vegetative bud may form in late August or September.
Occasionally small whorled pogonia will reproduce vegetatively, without the use of seeds.
Habitat: Small whorled pogonia can be limited by shade. The species seems to require small
light gaps, or canopy breaks, and generally grows in areas with sparse to moderate ground cover.
Too many other plants in an area can be harmful to this plant. This orchid typically grows under
canopies that are relatively open or near features that create long -persisting breaks in the forest
canopy such as a road or a stream. It grows in mixed -deciduous or mixed-deciduous/coniferous
forests that are generally in second- or third -growth successional stages. The soils in which it
lives are usually acidic, moist, and have very few nutrients.
Methodology
Pilot conducted a literature review to determine specific habitat requirements for these species.
Pilot personnel conducted the detailed survey within the specified 100-feet of impacts to waters
of the US on July 28, 2020 to determine the presence or absence of these species. The survey
was conducted via pedestrian transects within the survey area. Areas surveyed include a utility
easement associated with a natural gas pipeline and mixed hardwood wooded land. Site
photographs taken in the surveyed area are included as an attachment.

Detailed Schweinitz's Sunflower and Small Whorled Pogonia Survey Report
Pilot Project 3962.2
September 10, 2020
Findings and Conclusions
Areas located within the utility easement are dominated by mixed grasses as well as red maple
(Acer rubrum), white oak (Quercus alba), American persimmon (Diospyros virginiana) and sweet
gum (Liquidambar styraciflua) saplings, muscadine (Vitis rotundifolia), sawtooth blackberry
(Rubus argutus), dogfennel (Eupatorium capillifolium), broom sedge (Andropogon virginicus),
evening trumpetflower (Gelsemium sempervirens), Blackeyed Susan (Rudbeckia hirta), multiflora
rose (Rosa multiflora) and greater bladder sedge (Carex intumescens). Areas of wooded land
located within the survey area are dominated by tulip poplar (Liriodendron tulipifera), white oak
(Quercus alba), blackjack oak (Quercus marilandica), mockernut hickory (Carya tomentosa),
scarlet oak (Quercus coccinea), American beech (Fagus grandifolia) and red oak (Acer rubrum)
trees, red maple (Acer rubrum), American holly (Ilex opaca), American beech (Fagus grandifolia),
flowering dogwood (Cornus florida) eastern red cedar (Juniperus virginiana) saplings, multiflora
rose (Rosa multiflora), hollyleaved barberry (Mahonia aquifolium), maple -leaf viburnum
(Viburnum acerifolium), false nettle (Boehmeria cylindrica), Virginia creeper (Parthenocissus
quinquefolia), red maple (Acer rubrum), oak saplings (Quercus sp.), muscadine (Vitis rotundifolia),
partridgeberry (mitchella repens), honey suckle (Lonicera japonica), American hogpeanut
(Amphicarpaea bracteata), spotted wintergreen (Chimaphila maculate), wild violet (Viola
sororia) and greenbrier (Smilax rotundifolia).
Species within the Aster family with analogous characteristics to Schweinitz's sunflower observed
include Blackeyed Susan (Rudbeckia hirta) and small wooded sunflower (Helianthus
microcephalus). Species within the Orchid family were not observed within the survey area.
While suitable habitat for Schweinitz's sunflower and Small whorled pogonia was observed, no
individuals or populations were identified during the survey. Based on the findings of the survey,
we have made a determination of no effect for Schweinitz's sunflower and Small whorled
pogonia.
Closing
We appreciate your assistance. Please contact us at 336.310.4527 if you have any questions
concerning the site or this request.
Sincerely,
J 1� 114.,l 7
Catherine L. Carston Michael T. Brame, PWS
Project Manager Principal
Attachments: Drawing 1— USGS Topographic Map
Drawing 2 —T&E Survey Map
Site Photographs

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LEGEND
Site Boundary
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Drawing 1 < : _ USGS Topographic Map
USGS Topographic Map
2408 Oak Ridge Road
Belews Creek & Summerfield, r Approximate 81 Acre Tract
NC Quadrangles PILOT Oak Ridge, Guilford County, NC
Scale: 1"=2,000' PILOT ENVIRONMENTAL. NC Pilot Project3962.2

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LEGEND
Site Boundary
� T&E Survey Area
' MESurvey Map
Drawing 2 34O8Oak Ridge Road
ZO19Imagery from ESR| Approximate 81Acre Tract
Scale: 1" =4OO' PILOT Oak Ridge, Guilford County, N[

SITE PHOTOGRAPHS
Photograph 1— View of the utility easement crossing the survey area.
Photograph 2 - View of the utility easement crossing the survey area.

SITE PHOTOGRAPHS
Photograph 3 - View of the utility easement crossing the survey area.
Photograph 4 - View of the utility easement crossing the survey area.

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