20160670 Ver 1_Approved SWMP_06.14.16_20161109

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DEVELOPER/OWNER
YMCA OF THE TRIANGLE
801 CORPORATE CENTER DRIVE, SUITE 200
RALEIGH, NC 27607
P: [phone]
CONTACT: TIM CARR
CONSTRUCTION PLANS FOR
GARNER, NC
MARCH 4,2016
SITE PLAN
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PREPARED BY:
11
ithersRavenet
Engineers j PLanners I Surveyors
115 MacKenan Drive I Cary, NC 275111 t: 919.469.33401 license #: C-0832 I www.withersravenel.com
0
INDEX OF SHEETS
CO.0
COVER
C1.0
EXISTING CONDITIONS Ff DEMOLITION PLAN
C2.0
OVERALL SITE PLAN
C2.1
SITE PLAN - EAST
C2.2
SITE PLAN - WEST
C2.21
ROAD WIDENING EXISTING CONDITIONS
C2.22
NCDOT ROAD WIDENING PLAN
C2.23
NCDOT ROAD WIDENING GRADING PLAN
C3.0
OVERALL UTILITY PLAN
C3.1
UTILITY PLAN - EAST
C3.2
UTILITY PLAN - WEST
C3.3
SEWER PLAN & PROFILE
C3.4
SEWER PLAN & PROFILE
C4.0
OVERALL GRADING PLAN
C4.1
GRADING &DRAINAGE PLAN - EAST
C4.2
GRADING Et DRAINAGE PLAN - WEST
c50
OVERALL EROSION
0 CONTROL PLAN
C5.1
EROSION CONTROL PLAN EAST
C5.2
EROSION CONTROL PLAN - WEST
C5.3
NPDES PLAN
C6.0
SITE DETAILS
C6.1
NCDOT DETAILS
C6.2
UTILITY DETAILS
C6.3
UTILITY DETAILS
C6.4
UTILITY DETAILS
C6.5
EROSION CONTROL DETAILS
C7.0
SCM #1 -PLAN & DETAILS
C7.1
SCM #2 -PLAN Et DETAILS
C7.2
SCM #3 -PLAN & DETAILS
C7:3
SCM DETAILS
1-1.0
OVERALL LANDSCAPE PLAN
1-1.1
LANDSCAPE PLAN - EAST
1-1.2
LANDSCAPE PLAN- WEST
L2.0 LIGHTING PLAN
ATTENTION CONTRACTORS
THE CONSTRUCTION CONTRACTOR RESPONSIBLE FOR THE EXTENSION OF WATER, SEWER,
AND/OR REUSE, AS APPROVED IN THESE PLANS, IS RESPONSIBLE FOR CONTACTING THE PUBLIC
UTILITIES DEPARTMENT AT [phone] AT LEAST TWENTY FOUR HOURS PRIOR TO BEGINNING
ANY OF THEIR CONSTRUCTION.
FAILURE TO NOTIFY BOTH CITY DEPARTMENTS IN ADVANCE OF BEGINNING CONSTRUCTION,
WILL RESULT IN THE ISSUANCE OF MONETARY FINES, AND REQUIRE REINSTALLATION OF ANY
WATER OR SEWER FACILITIES NOT INSPECTED AS A RESULT OF THIS NOTIFICATION FAILURE.
FAILURE TO CALL FOR INSPECTION, INSTALL A DOWNSTREAM PLUG, HAVE PERMITTED PLANS
ON THE JOBSITE OR ANY OTHER VIOLATION OF CITY OF RALEIGH STANDARDS WILL RESULT IN
A FINE AND POSSIBLE EXCLUSION FROM FUTURE WORK IN THE CITY OF RALEIGH.
G!
� Il
•tee Vis= ¢
C �7.Nc-
Public
Sewer Collection / Extension System
The City of Raleigh consents to the connection and extension of the
City's public sewer system as shown on this plan. The material and
Construction methods used for this project shalt conform to the
standards and specifications of the CIVs Public Utilities Handbook,
City of Raleigh s Fa
Public Utilities Department Permit #
0
Authorization to Construct
Date
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PRIVATE RESIDENCE
ZONING: R-40
Lu W
L-
-0
15' SIDE SETBACK \
---------
SETBACK /
HEATHER RIDGE SUBDIVISION
\ ZONING. R-12
I \ 35'
I ( � BUFFER25'
I ( REAR SETBACK \ �\ _ HORNE DRIVE 1 o/
\'
RETAINING WALL WITH 4' BLACK VINYL I I
\ CHAIN LINK FENCE MOUNTED ON TOP
(TYP)
HEATHER RIDGE SUBDIVISION
` ZONING: R-12 ' \
( I
32'x 50' 151
SHELTER
�'•- 1 - _ ' SIDE SETBACK
MULTI -USE PLAY FIELD '
( I 20,800 SF c ' _ BUFFER 1
H , PROPOSED ' " - _.,/ 30' PROPOSED CITY /
PARKING (TYP.) - - - _ _ OF RALEIGH
I----------- SANITARY SEWER
_ ---- ---- EASEMENT
BUFFER
t �
SITE DATA
PROPERTY OWNER:
YMCA OF THE TRIANGLE
STANDARD DUTY
(PARKING SPACES)
801 CORPORATE CENTER DRIVE, SUITE 200
MAIN STRUCTURE
RALEIGH, NC 27607
STREET ADDRESS:
0 AVERSBORO ROAD
REAL ESTATE ID:
0005627
WAKE COUNTY PIN:
1710138336
CURRENT ZONING:
MF -1 (COMMUNITY SERVICE/OTHER SPECIAL USE)
EXISTING USE: VACANT
PROPOSED USE: YMCA FACILITY & OUTDOOR AQUATICS CENTER
TRACT AREA: 13.92 ACRES (605,402 SF)
DISTURBED AREA: 9.17 ACRES (399,419 SF) INCLUDING OFF-SITE AREA.
IMPERVIOUS:
EXISTING IMPERVIOUS AREA:
0.00 SF
STANDARD DUTY
(PARKING SPACES)
PROPOSED IMPERVIOUS AREA:
MAIN STRUCTURE
= 35,763 SF
1.5 INCHES OF S-9.56
POOL HOUSE
= 1,255 SF
2.5 INCHES OF 1-19.013
SHELTER
= 1,600 SF
8 INCHES
PARKING & DRIVES
= 110,332 SF
W
SIDEWALKS & TRAILS
= 36,681 SF
-
roo
TOTAL
= 185,631 SF(31%)
PARKING:
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Z
BUILDINGS:
1 SPACE 1200 SF OF GROSS FLOOR AREA
35,763 SF (MAIN STRUCTURE) + 1,255 (POOL HOUSE) =37,018 SF
C
W
37,018 SF 1200 SF =186 SPACES REQUIRED
NOTE: PARKING FOR FUTURE EXPANSION WILL BE ACCOUNTED FOR AT THE TIME OF THAT PROJECT DEVELOPMENT.
OUTDOOR FACILITIES: 1 SPACE 1250 SF OF DEVELOPED (PARK) AREA
13,504 SF (POOL AREA) + 1,600 SF (SHELTER) =15,104 SF
15,104 SF 1250 SF = 60 SPACES REQUIRED
NOTE: THE PLAY FIELD WILL BE USED SOLELY FOR YMCA DAY CAMP AND AFTER SCHOOL CARE. THE PATRONS USING THE FIELD I
WILL BE DROPPED OFF ONLYAND NO ADDITIONAL PARKING WILL BE NEEDED.
TOTAL PARKING SPACES REQUIRED: 246 SPACES (7 SHALL BE HANDICAP ACCESSIBLE)
TOTAL PARKING SPACES PROVIDED: 269 SPACES (7 HANDICAP ACCESSIBLE SPACES PROPOSED)
TREE COVERAGE:
PROPOSED TREE CANOPY COVER: 257,609 SF OR 5.91 AC. (42%)
• NO DIMENSION IS LESS THAN 15 FEET AND OR 1,000 SQUARE FEET.
• REQUIRED PRESERVED TREE COVER AREA FOR NON RESIDENTIAL DEVELOPMENT =12%
PAVEMENT SCHEDULE
MATERIAL TYPE
STANDARD DUTY
(PARKING SPACES)
HEAVY DUTY
(DRIVE AISLE)
ASPHALT SURFACE COURSE
1.5 INCHES OF S-9.56
1.5 INCHES OF S-9.56
ASPHALT INITIAL COURSE
1.5 INCHES OF S-9.56
2.5 INCHES OF 1-19.013
AGGREGATE BASE COURSE
(ABC) STONE
6 INCHES
8 INCHES
_ - /
SCM
I t _ 1
35' +/-5,998 SF � r .., ,. _ _ _ _ - _ /
• / / '" � `.°: x•.::.r, .:.." "... � � 1 -` - _ _ _ •_= •1f,•.•' _ ////// / PROPOSED
BUFFER /
• / PARKING TYP. /
•
( PROPOSED 30' CITY
t I OF RALEIGH SANITARY / // _: `
I ,./ - • - - POOL HOU '�`• PHASE I -AMPHITHEATER
SEWER EASEMENT '
/ / / , �+� 1 SE r • �'` (FUTURE NATATORIUM) ; t••: •
yv,.,,,•,_,x/ // . ,+ 414 SF) ;: L'. t••s 7^•'� •,1•''
•
x--
/ EX. WETLANDS / ..:
(TYP)
----" - /' . • . . , • i RETAINING WALL WITH 4' BLACK VINYL °�'• ''r
P ' < .:..:. KID POOL
-� . . . , . . . . , . G
-�-`- \ � CHAIN LINK FENCE MOUNTED ON TOP (TY) , , d. +,;., � � � :•; �
25rRE` SETBACK T LAND !" ' : ' ' ' '' MAIN YMCA BUILDING
r•'`.`'v`.::t:_::;'`•.•'"•i�`:'::'.^ i '' ' +1-35,763 SF
50' STREAM BUFFER ' SCM #28 6 E SF
\♦ \\ r _ :/
WETLANDS (TYP.) �- - - �„�'•�
. . . . , �`-----' RETAINING WALL WITH 6'BLACKVINYL
CHAIN LINK FENCE MOUNTED ON TOP (TYP)SCM #1
\\ ss \ ( I ( . .. . . . , . .\ . . , , . ' r- BIO -RETENTION POND
(+1-867)
-...
`' � �� -� I I \i ... ,,,� _ , , , _ , . ' � , ^, / •i � � I � PROPOSED
PARKING (TYP.) /
50' STREAM BUFFER \\ \s \ I ` --- `--:- '._"" '-.- -- --- « • • ..� � -- I
\\ s \ l 35:BtlEFo_ , , . . . ,
15' SETBACK "` '� - - - _ - _ �...•" / -\ �1 /
WHITE DEER PARK I I I � - 7 - 15' SIDE SETBA K - - - -
ZONING: R-40 ♦ i � I � � � .._
} 1 I + + I 50' STREAM BUFFER RETAINING WALL WITH 4' BLACK
SUMMERS WALK SUBDIVISION I VINYL CHAIN LINK FENCE MOUNTED ,
I , ZONING: R-12 I
ON TOP (TYP) SEE DETAIL ON C6.0
I I
EX, WHITE DEER PARK SUMMERS WALK CIRCLE ( I
TRAIL (TYP) �
'IXRRY� q'VFISO ZINNIA LANE
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FRONT SETBA�e
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20'
STRE T9CAPE
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WIDEWATERS GROUP
0 ]I / ZONING: 0 & I
071 HEATHER WOODS SUBDIVISION
OPEN SPACE
N ZONING: R-15
/ 0/ \
GARNER VOLUNTEER
0FIRE DEPT.
ZONING: R-15
1
1
1
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1
GENERAL NOTES:
1. FIELD SURVEY OF EXISTING CONDITIONS COMPLETED BY WITHERSRAVENEL.
2. WETLAND AND STREAM INFORMATION PROVIDED BY WITHERSRAVENEL.
3. NO FEMA 100 YEAR FLOOD PLAIN IS LOCATED WITHIN THIS PARCEL.
4. ALL CONSTRUCTION MUST BE PERFORMED IN ACCORDANCE WITH THE TOWN OF GARNER
STANDARD SPECIFICATIONS AND DETAILS.
5. ALL WORK MUST COMPLY WITH THE NORTH CAROLINA STATE BUILDING CODE AND THE
ACCESSIBILITY CODE IN EFFECT AT THE TIME OF BUILDING PERMIT ISSUANCE.
6. CONTRACTOR SHALL VERIFY LOCATION
I Y THEOF ALL EXISTING UTILITIES PRIOR TO
CONSTRUCTION. THE LOCATION OF EXISTING UTILITIES SHOWN ON PLANS IS BASED ON BEST
INFORMATION AVAILABLE. EXISTING UTILITY LOCATIONS SHOULD BE CONSIDERED AS
APPROXIMATE.
7. PRIOR TO START OF CONSTRUCTION, THE CONTRACTOR SHALL SCHEDULE PRE -CONSTRUCTION
MEETINGS WITH THE TOWN OF GARNER AND WAKE COUNTY ENVIRONMENTAL SERVICES.
8. THE CONTRACTOR SHALL BE RESPONSIBLE TO CONTROL AND TO INITIATE CLEAN-UP OF THE
LITTER AND REFUSE GENERATED FROM THIS DEVELOPMENT, BOTH ON-SITE AND OFF-SITE,
DURING THE INSTALLATION OF SERVICES AND CONSTRUCTION OF BUILDINGS UNTIL
SUBSTANTIAL COMPLETION OF ALL CONSTRUCTION. THE CLEAN-UP OF LITTER AND REFUSE
SHALL BE DONE ON A REGULAR BASIS, THIS SHALL INCLUDE INITIATING ACTION AND ASSUMING
ANY COSTS IN REMEDYING THE SITUATION.
9. ALL WRITTEN INFORMATION AND WRITTEN DIMENSIONS SHALL PREVAIL. ANY DISCREPANCIES
SHALL BE REPORTED TO THE ENGINEER PRIOR TO ATTEMPTING ANY WORK IN THE AREA
AFFECTED BY THE DISCREPANCY.
10. ALL DIMENSIONS ARE FROM BACK OF CURB TO BACK OF CURB OR TO FACE OF BUILDING WALL
OR TO PROPERTY LINE, UNLESS OTHERWISE NOTED.
11. ONLY GENERAL BUILDING DIMENSIONS ARE SHOWN, FOR SPECIFIC DIMENSIONS REFER TO
ARCHITECTURAL DRAWINGS.
12. ROADWAY IMPROVEMENTS AND DRIVEWAY CONFIGURATIONS SHOWN ARE FOR GRAPHICAL
PURPOSES ONLY AND WILL BE FINALIZED BASED ON TRAFFIC STUDY ANALYSIS.
13. ALL PAVEMENT (TRAFFIC) MARKINGS SHALL BE THERMOPLASTIC, WITH THE EXCEPTION OF
PARKING STALL STRIPES WHICH MAY BE PAINTED WHITE.
14. ALL SIGN AND STRIPING PLACEMENT & MATERIALS TO CONFORM TO THE LATEST EDITIONS OF
THE MUTCD.
15. AT STREET INTERSECTIONS, NOTHING SHALL BE ERECTED, PLACED, PLANTED OR ALLOWED TO
GROW IN SUCH A MANNER AS TO IMPEDE THE SIGHT VISION AT THE INTERSECTION AND THAT
THE TOWN'S MINIMUM SIGHT TRIANGLE REQUIREMENT, MEASURED FROM THE INTERSECTING
RIGHT-OF-WAY, TEN FOOT (10') ALONG THE APPROACH STREET AND SEVENTY FEET (70') ALONG
THE INTERSECTING STREET.
16. ACCESSIBLE ROUTES SHALL NOT EXCEED 1:20 LONGITUDINAL OR 1:48 TRANSVERSE SLOPE PER
ADA.
17. WHEELCHAIR RAMP LOCATIONS ARE APPROXIMATE ONLY, WHEELCHAIR RAMPS SHOULD BE
LOCATED AND CONSTRUCTED IN ACCORDANCE WITH THE TOWN OF GARNER AND NCDOT
STANDARDS AFTER THE LOCATIONS OF THE PROPOSED STOP BARS AND/OR PEDESTRIAN
CROSSWALKS HAVE BEEN STAKED OUT.
18. ALL ACCESSIBLE SIGNAGE SHALL BE IN ACCORDANCE WITH THE AMERICANS WITH DISABILITIES
ACT ACCESSIBILITY GUIDELINES (ADAAG).
19. ALL CURB AND GUTTER ON-SITE SHALL BE 24". ALL CURB AND GUTTER WITHIN PUBLIC RIGHT OF
WAY SHALL BE 30". ALL MEDIAN CURB AND GUTTER SHALL BE 18".
20. ALL ASPHALT AND CONCRETE WALKS & WALK INTERSECTIONS TO HAVE SMOOTH RADII. NO
RAGGED EDGES OR IRREGULAR CURVES WILL BE ACCEPTED.
21. EXPANSION JOINTS IN THE CONCRETE SIDEWALK SHALL BE PLACED EVERY 25' ON CENTER.
22. FOLLOWING SITE PLAN APPROVAL, APPROVAL OF THE SOIL EROSION AND SEDIMENTATION PLAN
BY WAKE COUNTY ENVIRONMENTAL HEALTH DIVISION IS REQUIRED. APPROVAL OF THE PLAN BY
WAKE COUNTY IS CONTINGENT ON A LETTER FROM THE TOWN STATING THAT THE REQUIRED
TREE PROTECTION FENCING HAS BEEN INSTALLED BY THE CONTRACTOR, AND INSPECTED AND
APPROVED BY THE PLANNING DEPARTMENT, A CERTIFICATE OF COMPLIANCE FROM WAKE
COUNTY FOR THIS PROJECT IS REQUIRED BY THE TOWN OF GARNER PRIOR TO RECEIVING A
BUILDING PERMIT.
23. THE ADDRESS SHALL BE DISPLAYED ON THE HIGHEST, OUTMOST SURFACE OF THE BUILDING OR
ON A SIGN, NUMERALS TO BE AT LEAST 12 INCHES IN SIZE, IN A COLOR CONTRASTING WITH ITS
BACKGROUND, AND VISIBLE FROM THE ROAD.
24. AT THE CONCLUSION OF THE PROJECT ALL SCM'S INSTALLED ON-SITE MUST BE CERTIFIED BY A
DESIGN PROFESSIONAL AND THE TOWN OF GARNER ENGINEERING DEPARTMENT MUST RECEIVE
ALL AS -BUILT DRAWINGS PRIOR TO RECEIVING THE CERTIFICATE OF OCCUPANCY.
25. FENCING SHALL BE PROVIDED TO SURROUND STORMWATER SCM 3 AND SHALL BE BLACK VINYL
COATED CHAIN LINK 48" IN HEIGHT.
26. PERMANENT AND TEMPORARY SIGNAGE REQUIRES AN APPROVED SIGN PERMIT PRIOR TO
INSTALLATION. SIGNAGE IS A SEPARATE SUBMITTAL, REVIEW AND APPROVAL PROCESS BY THE
PLANNING DEPARTMENT. SIGNAGE FOR THIS SITE MUST COMPLY WITH THE TOWN OF GARNER
SIGN ORDINANCE..
27. CONTACT JUSTIN MASSENGILL AT [phone] OR [e-mail] TO SCHEDULE A
PRE -CONSTRUCTION MEETING PRIOR TO OBTAINING BUILDING PERMITS FOR THIS PLAN.
KNOW WHAT'S BELOW.
CALL BEFORE YOU DIG.
GRAPHIC SCALE
60 0 30 60 120
1 inch = 60 ft.
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Date
Designer
03-04-16
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Job No.
Drawn By
02150390
MEM
Date
Designer
03-04-16
KAP
Revisions
1 PER NCDOT COMMENTS 03-21-16
2 PER NCDOT COMMENTS 04-19-16
3 PER NCDOT COMMENTS 05-17-16
Sheet No.
C2.0

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RISER M #1\\ \ 9 �'1a 295 11 \ 4
\ \
INV. PN=274.50' 1 10k ° ..�•A,
\ \ \ \ \ I &.\ OUT =274.50 \ \ \ 1 \ 1 \ a
�\ \ QUTLET PIPE \ _ _ \ \\ I /
,QUT=274.00' I
285
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CONCRETE CRA LE
StE SH
T 7.3
�� ItP OF �ERM=2152.00' 280
- _ s /6 ` UIciDERDRAI�J CL
EA4 OUT
SCM VkINTENANI)X AND
5--0 STREAM ,BUFFER ACCESS EASEMENT/ / / / I 6"/UNDERDRAIN/
_ o / / / / I IW.=274.75' / I SEE RIP -RAP-
-
IP -RAP
_ - / / ��/ / // // / PLANTING AREA=27 .00' i FO AY DETAIL
- - - / / _ / N ±867 /SQ. FT.
7-7
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50' STREAM BUFFER
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SCM #1 - BIORETENTION AREA
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CONTRACTOR TO EXCAVATELA
IN S
JRFkC
275
CHANNEL AT OUTLET TO
ENSURE POSITIVE DRAINAGE
275
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ENERGY DISSIPATOR
1
DOT CLASS '1' RIP RAP
1O'L x 6'W x 18" THICK
WITH LINER
270
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SCALE:
1 " = 50' HORIZ.
1" = 5' VERT.
9+50 10+00 10+50 11+00 11+50 12+00 12+50
RCP OUTLET TO BE
CONSTRUCTED WITH CONCRETE
CRADLE AND SPILLWAY FILTER.
SEE DETAIL C7.3
NOTE: RISER AND SKIMMER
SHALL BE INSTALLED PRIOR TO
THE BEGINNING OF OVERALL
SITE GRADING AND SHALL BE
UTILIZED AS A SEDIMENT
CONTROL DEVICE DURING
CONSTRUCTION. ONCE THE
SITE HAS BEEN STABILIZED
AND GRADING /S COMPLETE
THE BASIN SHALL BE CLEANED
OUT AND THE SKIMMER
REMOVED.
100 -YR WSEL (EL: 280.13)
TEMPORARY POOL ELEVATION (EL: 280.00)
3" HARDWOOD MULCH (EL: 279.00)
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BIO -RETENTION UNDERDRAIN TRENCH
SEE DETAIL THIS SHEET
PERFORATED UNDERDRAIN INV: 274.75' 00.59. SLOPE (MIN)
MINIMUM 2' SEPERATION BETWEEN BOTTOM
AND SEASONAL HIGH WATER TABLE
6" CLEAN OUT
RISER CREST: 280.00
6" UNDERDRAIN INV: 274.50'
RISER CREST: 280.00
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SOUTHERN WAL
6" PRECAST TOP
SLAB W/ GRATE
WESTERNWALL TOP: 281.25 (TYP)
9" (Ty RISER CREST: 280.00
4' (TYP)
tA81tMN WALL
----nI
X4011l
RISER ' 2 DETAILS
N.T.S.
7.0'
RISER TOP VIEW
N.T.S.
NOTES:
SEE LANDSCAPING PLAN FOR PLANTING DETAILS
BIO -RETENTION AREA MEDIA TO BE:
1. 85%-887o WASHED SAND -ASTM C.33, AASHTO M.6 OR
NCDOT CLAAS 111 FINE AGGREGATE.
2. 8%-129. FINES (CLAY & SILT)
3. 37.-5% ORGANIC MATTER
4. THE MEDIA INFILTRATION RATE SHALL BE 1-6 IN./HR. 1
TO 2 1N./HR. IS PREFERRED.
5. CONTRACTOR TO PROVIDE SOIL TEST DATA AND
SAMPLES TO THE ENGINEER PRIOR TO CONSTRUCTION.
6. INSTALLATION OF THE BIORETENTION MEDIA MUST
OCCUR AFTER THE SITE HAS BEEN STABILIZED.
4'x4' I.D. RISER
SEE DETAIL THIS SHEET
PAVED INVERT
" (TYP)
RISER CREST: 280.00
15" OUTLET INV: 274.50'
ANTI -FLOATATION PAD
DEPTH=12"
TOP OF DAM: 282.0
1570 CLASS 111 0 -RING RCP
CONCRETE CRADLE
`INV=274.506x-------------
ANTI-FLOTATION
810 -RETENTION AREA CROSS SECTION
N.T.S.
SCHEDULE 40 OR SDR
35 SMOOTH WALL PVC
NOTES:
1. UNDERDRAIN MAY BE CONSTRUCTED FORM SCHEDULE
40 PVC OR SDR 35 SMOOTH WALL PVC
2. ALL UNDERDRAIN MUST HAVE A MIN. OF 0.5% SLOPE
3. FOUR ROWS OF PERFORATIONS SHALL BE PROVIDED
FOR PIPE SIZES UP TO 10.0': SIZES GREATER
THAN 10.0" SHALL BE PROVIDED WITH 6 ROWS.
PERFORATED UNDERDRAIN DETAIL
N.T.S.
z MA
FXTER FABRIC SHALL NOT . IN PLACE OF
STONE WHEN UPSTREAM DBIO-RETENTION LINDERDRAIN TRENCH DETAIL
Ro1JNAGE AREAS ARE UNSTABLE
PIPE
/
IOpF
PIPE OUTLET C8 6"
CL4SS 'B' RIP RAP
12" THICK
SECRON A A
RIP RAP FOREBAY DETAIL
N.T.S.
L BERM
GRAPHIC SCALE
20 0 10 20 40
1 inch = 20 Ft.
STORMWATER SCM NOTES:
1. PRIOR TO CONSTRUCTION, ANY DISCREPANCIES IN THE PLANS SHALL BE
BROUGHT TO THE ATTENTION OF THE DESIGN ENGINEER FOR RESOLUTION.
2. ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL TOWN OF GARNER
STANDARDS AND SPECIFICATIONS.
3. GEOTECHNICAL ENGINEER SHALL EVALUATE SOILS ONSITE FOR SUITABILITY OF
DAM CONSTRUCTION, SLOPE STABILITY, AND CLAY LINER.
4. DURING CONSTRUCTION, THE SCM IS TO BE USED AS AN EROSION CONTROL
DEVICE. THE FOREBAY WILL NOT BE REQUIRED WHILE SCM IS ACTING AS AN
EROSION CONTROL DEVICE.
5. ALL PERMANENT STRUCTURES (I.E. RISER BOX, OUTLET PIPES, CONCRETE
CRADLES, ETC.) ARE TO BE INSTALLED WITH THE INITIAL DAM CONSTRUCTION.
6. CONTRACTOR TO PROVIDE SHOP DRAWINGS TO THE DESIGN ENGINEER FOR
REVIEW AND APPROVAL PRIOR TO ORDERING STRUCTURES.
7. ONCE THE SITE HAS BEEN STABILIZED, CONTRACTOR SHALL OBTAIN APPROVAL
BY EROSION CONTROL INSPECTOR IN ORDER TO REMOVE EROSION CONTROL
DEVICES.
8. ONCE ALL SEDIMENT AND EROSION CONTROL DEVICES HAVE BEEN REMOVED,
THE SCM SHALL BE CONVERTED TO A PERMANENT SCM.
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Job No.
Drawn By
15-0390
MEM
Date
Designer
10/01/15
KAP
Revisions
1
1ST COMMENT
11-02-15
RESPONSES
2
2ND COMMENT
112015
RESPONSES
3
3RD COMMENT
12-07-15
RESPONSES
4
MODIFICATIONTO
04-27 16
SPECIAL USE SITE PLAN
5
MODIFICATION TO
05-23-16
SPECIAL USE SITE PLAN
• ALL SEDIMENT SHALL BE REMOVED AND DISPOSED OF PROPERLY. -
• FOREBAY AND VEGETATED SHELF SHALL BE CONSTRUCTED PER THIS PLAN. Sheet No.
• VEGETATED SHELF SHALL BE PLANTED PER PLANT SCHEDULE ON THIS C7.0
SHEET.TOWN OF GARNER REQUIRES FINAL CERTIFICATION OF SCM BY
PROFESSIONAL ENGINEER.

n
—
—
17+00
65---265-
- — — — — — — — — —
-------- ------\
X265
i
265 .. .• .� \ :• • / / '��,� /
/
. o. v. / /s. a. s / / m / MISER
INV.,IN� 265.00'
/
INV /OUT=262.00'
FFER / / OUTLET/ WIPE / /i / .�OQj—
/ / INV. OUT=Q61.00'
RCP
CONCRETE CRADLE
/ / I S�E SHT C7.3
/
SCM MAINTENANCE AND
� ACCESS EASEMENTS
\ _ FOREBAY
50' STRIEM BUFFER \ \ \ \ \ ±829 SQ.FT.
�D1cEP POOL ALLOW LAND \ \
±760 SQ.FT. \ \ \±34'2'4-%Qz------ j � � ±3618 SQ FT SHALLOW ER
—270___ -
A .4 J\i •i. .h .p ` \ \
CLAY LINER SPECIFICATIONS SCM #2 - STORMWATER WETLAND
THE CLAY LINER FOR THE WET POND SHALL BE AT LEAST 8" THICK AND MEET THE FOLLOWING
SPECIFICATIONS:
• UNIFIED SOIL CLASSIFICATION SYSTEM DESIGNATION OF CL, CH, ML,SC
• MINIMUM OF 40% PASSING #200 SIEVE
• MINIMUM PLASTICITY INDEX OF 12
• MAXIMUM INFILTRATION RATE OF 0.01 IN/HR.
• A MINIMUM OF 2 TESTS OF EACH ABOVE PARAMETER SHALL BE COMPLETED BY THE
CONTRACTOR ON THE LINER MATERIAL AND PRESENTED TO THE ENGINEER FOR APPROVAL.
• COMPACTION TO A MINIMUM OF 93% PER ASTM D698, AND WITHIN 3% OF THE OPTIMUM
MOISTURE CONTENT (1 COMPACTION DENSITY TEST PER 2500 SQ. FT.)
THE CLAY LINER SHALL BE PLACED UNDER THE BOTTOM OF THE BMP PERMANENT POOL TO A
THICKNESS OF 8 INCHES. A MINIMUM OF 4 INCHES OF TOPSOIL SHALL BE THE FINISHED GRADE AS
SHOWN ON THE DRAWINGS AND/OR DETAILS. CARE SHALL BE TAKEN WHEN TRACKING IN THE TOPSOIL
TO NOT PUNCTURE OR DAMAGE THE CLAY. A CLAY/SOIL MIXTURE MAY BE USED IF THE ABOVE
SPECIFICATIONS ARE SATISFIED AND WITH WRITTEN APPROVAL BY THE ENGINEER.
SCM #2 SHALLOW WATER
(NORMAL POOL TO 6" BELOW)
= 3,618 S.F. 50
HERB. PLANTS / 200 S.F. = 905 PLANTS
PLANT TYPE QTY
KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER HEIGHT
NOTES
HERBACEOUS 181
IVT
Iris virginica
Southern Blue Flag Iris
CONT.
4" Pot
24" O.C.
181
PEV
Peltandra virginica
Arrow arum
CONT.
4" Pot
24" O.C.
181
POC
Pontedaria cordata
Pickerelweed
CONT.
4" Pot
24" O.C.
181
SAC
Soururus cernuus
Lizard's toil
CONT.
4" Pot
24" O.C.
181
SCT
Schoenoplectus tabernoemontani
Softstem Bulrush
CONT.
4" Pot
24" O.C.
SCM #2 SHALLOW LAND
(NORMAL POOL AND ABOVE) =
3,424 S.F.
SEE BELOW FOR
PLANT CALCULATIONS
PLANT TYPE
QTY
KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER HEIGHT NOTES
HERBACEOUS
128
ECP
Echinacea purpurea
Coneflower
CONT.
4" Pot
24" O.C.
2'
128
HIM
Hibiscus moscheutos
Rose Mallow
CONT.
4" Pot
24" O.C.
OUTLET PIPE INVERT DOWN
129
LCA
Lobelia cardinalis
Cardinal Flower
CONT.
4" Pot
24" O.C.
N
129
JUE
Juncus effusus
Soft Rush
CONT.
4" Pot
24" Q.C.
N
9
MYC
Myrica cerifero
Wax Myrtle
CONT.
3 Gal.
5' O.C.
SHRUBS
9
CSI
Cornus sericea 'Isanti'
Red Twig Dogwood
CONT.
3 Gal.
5' O.C.
9
ITV
Itea vir inica
Sweets ire
CONT.
3 Gal.
5' O.C.
45
ERS
Eragrostis spectabilis
Purple Love Grass
CONT.
1 Gal.
24" O.C.
GRASSES
46
PVS
Ponicum virgatum 'Shenandoah'
Shenandoah Switch Grass
CONT.
3 Gal.
24" O.C.
46
SCS
Schizachyrium scoparium
Little Bluestem
CONT.
1 Gal.
24" O.C.
SHALLOW LAND PLANTING TABULATIONS
1. HERBACEOUS PLANTS PROPOSED FOR 60% OF SHALLOW LAND AREA
(2,054 S.F.)
50 PLANTS1200 S.F. = 514 PLANTS REQUIRED
2. SHRUBS PROPOSED FOR 20% OF SHALLOW LAND AREA (685 S.F.)
8 SHRUBS1200 S.F. = 27 SHRUBS REQUIRED
3. GRASSES PROPOSED FOR 20% OF SHALLOW LAND AREA (685 S.F.)
40 GRASSES1200 S.F. = 137 GRASSES REQUIRED
WATER QUALITY ELEVATION
SHALLOW LAND
WATER DEPTH
0" TO +12"
275
270
CHANNEL AT OUTLET TO
ENSURE POSITIVE DRAINAGE
265
ENERGY DISSIPATOR
NCDOT CLASS '1' RIP RAP
16'L x 9'W x 30" THICK
WITH LINER
260
255
SCALE:
1 = 50 HORIZ.
1 " = 5' VERT.
SCM GRADING DETAIL
SCP
✓I# 3 DESK.; N DA I A
DIMENSIONS
ELEV.
Shallow Land
BOTTOM
C
262.0
100 YR WSE
267.07
TOP OF BERM
10 FT.
269.00
NORMAL POOL
5,207 SQ.FT.
265.00
DRAWDOWN ORIFICE *
1.5"
265.00
OVERFLOW WEIR
2'
266.00
RISER CREST ELEVATION
4' ID x 4' ID RCP BOX
267.00
OUTLET PIPE INVERT UP
80 LF 24" RCP
® 1.25%
262.0
OUTLET PIPE INVERT DOWN
261.00
*DRAWDOWN PIPE TO TURN UP 1' INSIDE
STRUCTURE TO ESTABLISH PERMANENT POOL
RISER CREST: 267.00 (TYP)
6" (TYP)
OVERFLOW ORIFICE 266.00'
4" ORIFICE PIPE INV*: 265.00'
4" EMERGENCY DRAIN INV: 262.00'
WETLAND DEPTH
LEGEND
SEE DET
Shallow Land
�)
C
Depth=0"-12"
Above Normal Pool
Shallow Water
O
Depth=0"-6"
Below Normal Pool
>V
Forebay (at pie
Deep
into pond) &
(at
00
r
outlet structure, etc.)
c0 lO
��ool(s)
6"-30" Below
Normal Pool
TRASH RACK NOT SHOWN
FOR CLARITY
RISER CREST
OVERFLOW WEIR
NOTE; TRASH RACK NOT
SHOWN FOR CLARITY
SOUTH
4'
EAST
8'1
Al
WEST
u
GRAPHIC SCALE
20 0 10 20 40
1 inch = 20 ft.
24" OUTLET INV: 262.00
*DRAWDOWN PIPE TO TURN UP 1' INSIDE
STRUCTURE TO ESTABLISH PERMANENT POOL
OPEN END 4" PVC-\
PERMANENT POOL
ORIFICE HOLE DRILLED
IN 4" PVC CAP
4" DIP EMERGENCY OUTLET TO 4" NRS GATE VALVE
EXTEND TO BOTTOM OF BASIN
(TEMPORARY SKIMMER ATTACHMENT
FOR EROSION CONTROL)
RISER #3 DETAILS
NTS
HANDWHEEL TO EXTEND 1'
ABOVE TRASH RACK
MANHOLE STEPS
(SEE NCDOT $40.66)
PLACE STEM SUPPORTS
L — — — — AT 3' FROM BASE
RAWDOWN PIPE UP
NORMAL POOL
TO BE SECURED TO
JOINT SEALED WITH
NEOPRENE GASKET
n—n MANHOLE WALL
�-- 4" PVC CAP ROUT EACH SIDE
'0—RING' GASKETED
n�n CLASS 111 RCP
RTS
TURNED 1' TO ESTABLISH
RISER
H A—LOCK
CAST IN
PAVED INVERT CONCRETE CRADLE
I r J L 1
12"
7.00'
SCM RISER & DRAWDOWN DEVICE DETAIL
NTS
NOTES:
1. STOCKPILED TOPSOILS USED IN WETLANDS PLANTING AREAS SHALL
CONTAIN AT LEAST 10% ORGANIC MATERIAL. PROFESSIONAL
CERTIFICATION OF PLANTING SOIL MATERIALS IS REQUIRED.
2. BMPS WILL BE USED AS SKIMMER BASINS DURING SITE
CONSTRUCTION AND WILL NOT BE CONVERTED UNTIL DRAINAGE
AREA IS STABILIZED. BMP'S WILL BE CLEANED OUT AND
275 RE—GRADED PER PLAN WHEN THEY ARE CONVERTED.
270
Z
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10+50
11+00
11+50
12+00 12+50
13+00
13+50
RISER #3 DETAILS
NTS
HANDWHEEL TO EXTEND 1'
ABOVE TRASH RACK
MANHOLE STEPS
(SEE NCDOT $40.66)
PLACE STEM SUPPORTS
L — — — — AT 3' FROM BASE
RAWDOWN PIPE UP
NORMAL POOL
TO BE SECURED TO
JOINT SEALED WITH
NEOPRENE GASKET
n—n MANHOLE WALL
�-- 4" PVC CAP ROUT EACH SIDE
'0—RING' GASKETED
n�n CLASS 111 RCP
RTS
TURNED 1' TO ESTABLISH
RISER
H A—LOCK
CAST IN
PAVED INVERT CONCRETE CRADLE
I r J L 1
12"
7.00'
SCM RISER & DRAWDOWN DEVICE DETAIL
NTS
NOTES:
1. STOCKPILED TOPSOILS USED IN WETLANDS PLANTING AREAS SHALL
CONTAIN AT LEAST 10% ORGANIC MATERIAL. PROFESSIONAL
CERTIFICATION OF PLANTING SOIL MATERIALS IS REQUIRED.
2. BMPS WILL BE USED AS SKIMMER BASINS DURING SITE
CONSTRUCTION AND WILL NOT BE CONVERTED UNTIL DRAINAGE
AREA IS STABILIZED. BMP'S WILL BE CLEANED OUT AND
275 RE—GRADED PER PLAN WHEN THEY ARE CONVERTED.
270
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Job No.
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15-0390
MEM
Date
Designer
10/01/15
KAP
\� °000 OppO O
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STORMWATER SCM NOTES:
1. PRIOR TO CONSTRUCTION, ANY DISCREPANCIES IN THE PLANS SHALL BE Revisions
265 BROUGHT TO THE ATTENTION OF THE DESIGN ENGINEER FOR RESOLUTION. 1STCOMMENT
2. ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL TOWN OF GARNER 1 RESPONSES 11-02-15
STANDARDS AND SPECIFICATIONS. 2NDCOMMENT
3. GEOTECHNICAL ENGINEER SHALL EVALUATE SOILS ONSITE FOR SUITABILITY OF 2 RESPONSES 11-20-15
DAM CONSTRUCTION, SLOPE STABILITY, AND CLAY LINER.
4. DURING CONSTRUCTION, THE SCM IS TO BE USED AS AN EROSION CONTROL 3RD COMMENT
DEVICE. THE FOREBAY WILL NOT BE REQUIRED WHILE SCM IS ACTING AS AN 3 RESPONSES 12-07-15
260 EROSION CONTROL DEVICE. MODIFICATIONTO
5. ALL PERMANENT STRUCTURES (I.E. RISER BOX, OUTLET PIPES, CONCRETE 4 SPECIAL USE SITE PLAN 042716
CRADLES, ETC.) ARE TO BE INSTALLED WITH THE INITIAL DAM CONSTRUCTION. MODIFICATION To
6. CONTRACTOR TO PROVIDE SHOP DRAWINGS TO THE DESIGN ENGINEER FOR 5 SPECIAL USE SITE PLAN OS -23 16
REVIEW AND APPROVAL PRIOR TO ORDERING STRUCTURES.
7. ONCE THE SITE HAS BEEN STABILIZED, CONTRACTOR SHALL OBTAIN APPROVAL
255 BY EROSION CONTROL INSPECTOR IN ORDER TO REMOVE EROSION CONTROL
DEVICES.
8. ONCE ALL SEDIMENT AND EROSION CONTROL DEVICES HAVE BEEN REMOVED,
THE SCM SHALL BE CONVERTED TO A PERMANENT SCM.
• ALL SEDIMENT SHALL BE REMOVED AND DISPOSED OF PROPERLY.
• FOREBAY AND VEGETATED SHELF SHALL BE CONSTRUCTED PER THIS PLAN.
• VEGETATED SHELF SHALL BE PLANTED PER PLANT SCHEDULE ON THIS Sheet No.
SHEET. C7.1 TOWN OF GARNER REQUIRES FINAL CERTIFICATION OF SCM BY
PROFESSIONAL ENGINEER.

\ \ \ \ _ -----7
272
\ pO 4 /
SCM# 3 DESIGN DATA
41 . .a.4
DIMENSIONS ELEV.
ego \ NORMAL POOL 5,998 263.50
POND BOTTOM 258.00
\ \ TOP OF BERM 8 FT. 269.00
DRAWDOWN ORIFICE * 1.5" 262.50
ff \ \ _ - _ \ \ \ `\ / y•' OVERFLOW WEIR 2' 265.00
RISER CREST 4' X 4' (ID) 267.00
271 4 ( HIGH FLOW BYPASS OUTLET PIPE INVERT UP 100 LF 30 RCP 258.25
I ` _
OUTLET PIPE INVERT DOWN ® 2.2% 256.00
OUTLET PIPE INVERT UP"
PORTION OF FOREBA ERM' WATER QUALITY OUTLET 0 OF 4 DIP 258.00
-TO -BE-CONSTRUCTED RIP -RAP- - -
OUTLET PIPE INVERT DOWN 257.00
\ - - - -- ---------- -_
\ ` \ \ i \ \ ` \ \ \ \ � � ' �- - _ (SEE-DEl'�►IL=,Ot�s'J�3�.___ ____________ �-----= � - `` - - -- STRUCTURE TO ESTABLISH PERMANENT POOL
- - - p *DRAWDOWN PIPE TO TURN UP 1' INSIDE
- -
�
I
` SCM �A1N,TENACE-- _ _ - --- - - _ -
\ AND CtSS \ _ __7 TRASH RACK NOT SHOWN FOR
_ _ _ CLARITY. TRASH RACK SHALL
�\ `\ EASE SIT _�\ -' ,-\ 2�0 _ - ------- 4 -- -- ,-,
j
HANDW
_ _ _ HEEL TO EXTEND 1' HAVE ACCESS HATCH OVER
265 _ 2T�- - - ABOVE TRASH RACK STEPS IN RISER.
SOUTH
MANHOLE STEPS ON S
WALL
\ \ - .A RISER CREST
(SEE NCDOT 840.66)
I FOREBAY - PLACE STEM SUPPORTS
\ \ 4 AT 3' FROM BASE - - -OPEN-2��- - -
4 " DIP\ BOTT i M ` \% \ _ - _ 58 00 \ - - �` JOINT SEALED WITH A -LOCK END 4" PVC
\ DRjIIN � 2 - - - - _ NEOPRENE GASKET CAST IN PERMANENT POOL
SCM -#3- - , g0 / _ _ _ / MANHOLE WALL 4 PVC C P
WETPOND P - / . - - - `I- - - - (OR APPROVED EQUAL) a -n DTOAESDTOABLISHWN IPNORMALRPOOLNED I'
GROUT EACH SIDE TO BE SECURED TO RISER
\ \ RISER v� - 1.5" ORIFICE HOLE DRILLED
INV. IN��63.�0
I o. 0 -RING GASKETED „�.,,
/ IN 4„ PVC CAP
� \ I ' �; 26
NV. OUT=25CLASS III RCP
\ ,x.2.5' P , / / , -
4" DIP WQ OUTLET TO
LEVEL SPREADER PAVE VERT
I /
FLOW
BYPASS
STRUCTUR
ENERG)
DISSIPA
REINFORCED
CHANNEL
UNDERDR
LEVI
SPR
GRAPHIC SCALE
20 0 10 20 40
1 inch = 20 ft.
\ CONCRETE �RAmLE , _ - - - z » I _
SEE SHT. �C�L.3 - ` -` , x� - - - - / f7
12" " SWALE TO ENSURE WATER DOES
\ - /�' l- � � 4 NRS GATE VALVE '
NOTE: GRADE BERMS AROUND
\ \ \ `'\ \ 4 DIP EMERGENCY OUTLET TO NOT BYPASS LEVEL SPREADER LIP.
OF BERM=269.00 �ix� - /�`' � �' �/ EXTEND TO BOTTOM OF BASIN
7.0' (TEMPORARY SKIMMER ATTACHMENT
24 "
- / CURB &GUTTER
\ ` i \ `� \ `x x, ---x x -.--.x---"' x�--x•--�x'�"�x�� / / /' / \ \ ' / -
y --------_--- FOR EROSION CONTROL)
/
- (3,000 PSI MIN COMPRESSIVE STRENGTH)
w w w w w SCM RISER & DRAWDOWN DEVICE DETAIL "BLIND" SWALE ALONG ENTIRE
1TI- P PE
INV. OUT= 56. 0
NTS LENGTH OF LEVEL SPREADER.
OUTLET PIPE LINE WITH CLASS "A" RIP RAP,
12" THICK
nn- --
RISER CREST: 267.00 SOUTH
RISERw/ w /
INV. /tN=265.00' /.
INV /OUT=262.00'
50S�TREAM BUFFER / / OUTLET/ PIPE
1J( INV. OUT�61.\ 00'
/
- - -r- 24 OUTLET INV: 258.25 '
I
- - - - - - -I- - - 4" DIP WQ OUTLET
34" RCP % INV: 258.00
� ,,-� ' '\ \\ i ,. \ •. �. w � w \ � � w � 1 m w .. w �, w / / WEST
CONCE CRADLE
S E SHT C7.3
SCM MAINTENANCE AND
/ / / 1 ACCESS EASEMENT
CLAY LINER SPECIFICATIONS SCM #3 - WETPON D
THE CLAY LINER FOR THE WET POND SHALL BE AT LEAST 8" THICK AND
MEET THE FOLLOWING SPECIFICATIONS:
• UNIFIED SOIL CLASSIFICATION SYSTEM DESIGNATION OF CL, CH,
ML,SC
• MINIMUM OF 40% PASSING #200 SIEVE
• MINIMUM PLASTICITY INDEX OF 12
• MAXIMUM INFILTRATION RATE OF 0.01 IN/HR.
• A MINIMUM OF 2 TESTS OF EACH ABOVE PARAMETER SHALL BE
COMPLETED BY THE CONTRACTOR ON THE LINER MATERIAL AND
PRESENTED TO THE ENGINEER FOR APPROVAL.
• COMPACTION TO A MINIMUM OF 93% PER ASTM D698, AND
WITHIN 3% OF THE OPTIMUM MOISTURE CONTENT (1 COMPACTION
DENSITY TEST PER 2500 SQ. FT.)
THE CLAY LINER SHALL BE PLACED UNDER THE BOTTOM OF THE BMP
PERMANENT POOL TO A THICKNESS OF 8 INCHES. A MINIMUM OF 4 INCHES
OF TOPSOIL SHALL BE THE FINISHED GRADE AS SHOWN ON THE DRAWINGS
AND/OR DETAILS. CARE SHALL BE TAKEN WHEN TRACKING IN THE TOPSOIL
TO NOT PUNCTURE OR DAMAGE THE CLAY. A CLAY/SOIL MIXTURE MAY BE
USED IF THE ABOVE SPECIFICATIONS ARE SATISFIED AND WITH WRITTEN
APPROVAL BY THE ENGINEER.
SCM #3 PLANT SCHEDULE
SHALLOW LAND (NORMAL POOL TO 6" ABOVE) = 1,668 S.F.
50 HERB. PLANTS / 200 S.F. = 417 PLANTS
PLANT TYPE
QTY
KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER NOTES
HERBACEOUS
139
SM
Asclepias incarnata
Swamp Milkweed
CONT.
4" Pot 24" O.C.
CONT.
139
TS
Carex stricta
Tussock Sedge
CONT.
4" Pot 24" O.C.
Soft Rush
139
JW
Eupotorium purpureum
Joe-pye weed
CONT.
4" Pot
SHALLOW WATER (NORMAL POOL TO 6" BELOW) =1,539 S.F.
50 HERB. PLANTS / 200 S.F. = 385 PLANTS
3'-0"
PLANT TYPE
QTY
KEY
BOTANICAL NAME
COMMON NAM
ROOT
CALIPER
NOTff-
A.
128
BI
Iris versicolor
Blue Flag Iris
CONT.
4" Pot
24" O.C.
INV: 262.50*
128
SR
Juncus effusus
Soft Rush
CONT.
4" Pot
24" O.C.
F-
129 1
PW
Pontedaria cordata
Pickerelweed
CONT.
4" Pot
24" O.C.
2' WEIR
INV: 265.00
4" PVC
IN 262.50
EAST
U
_ URBAN TRANSITION
BUFFER
0.00% SLOPE ON TOP OF GUTTER
(FLAT SLOPE)
SEE PLAN FOR LEVEL SPREADER LENGTH
EVEL SPREADER LIP ELEVATION= 4"-6"
HIGHER THAN EXISTING SLOPE ON
DOWNSTREAM SIDE
DIFFUSED FLOW
THROUGH BUFFER
INSTALL RIP RAP ENERGY DISSIPATER-'
(PER SCHEDULE) WITH GEOTEXTILE LINER
3'-0"
J
to
Designer
3'-0" #57 WASHED STONE - 4-
6" PERFORATED UNDERDRAIN TO
COMPACTED THICK (MIN) PERMAMENT
DAYLIGHT TO BYPASS CHANNEL
SUBGRADE GEOTEXTILE UNDERLINER
'OP
C
Z
LEVEL SPREADER DETAIL
�4"
NTS
PVC DRAWDOWN
NOTES
INV: 262.50*
1. ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL
LL
0
TOWN OF GARNER STANDARDS AND SPECIFICATIONS.
TRASH RACK OPENING
2. LEVEL SPREADERS ON THE PROJECT MUST BE
TO ALIGN WITH STEPS
LOCATED ON COMMON OPEN SPACE, HAVE AN ACCESS
F-
AND MAINTENANCE EASEMENTS LOCATED AROUND THEM
AND INCLUDE AN OPERATIONS AND MAINTENANCE
MANUAL AND MAINTENANCE AGREEMENT.
4" DIP BOTTOM DRAIN
INV: 258.00
DRAWDOWN PIPE UPTURNED 1'
WITHIN RISER TO ESTABLISH
NORMAL POOL AT 263.50
4" DIP BOTTOM DRAIN INV: 258.00
275 275
9+50 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50
STORMWATER SCM NOTES:
1. PRIOR TO CONSTRUCTION, ANY DISCREPANCIES IN THE PLANS
SHALL BE BROUGHT TO THE ATTENTION OF THE DESIGN ENGINEER
FOR RESOLUTION.
2. ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL TOWN
OF GARNER STANDARDS AND SPECIFICATIONS.
3. GEOTECHNICAL ENGINEER SHALL EVALUATE SOILS ONSITE FOR
SUITABILITY OF DAM CONSTRUCTION, SLOPE STABILITY, AND CLAY
LINER.
4. DURING CONSTRUCTION, THE SCM IS TO BE USED AS AN EROSION
CONTROL DEVICE. THE FOREBAY WILL NOT BE REQUIRED WHILE
SCM IS ACTING AS AN EROSION CONTROL DEVICE.
5. ALL PERMANENT STRUCTURES (I.E. RISER BOX, OUTLET PIPES,
CONCRETE CRADLES, ETC.) ARE TO BE INSTALLED WITH THE
INITIAL DAM CONSTRUCTION.
6. CONTRACTOR TO PROVIDE SHOP DRAWINGS TO THE DESIGN
ENGINEER FOR REVIEW AND APPROVAL PRIOR TO ORDERING
STRUCTURES.
7. ONCE THE SITE HAS BEEN STABILIZED, CONTRACTOR SHALL
OBTAIN APPROVAL BY EROSION CONTROL INSPECTOR IN ORDER
TO REMOVE EROSION CONTROL DEVICES.
8. ONCE ALL SEDIMENT AND EROSION CONTROL DEVICES HAVE BEEN
REMOVED, THE SCM SHALL BE CONVERTED TO A PERMANENT
SCM.
• ALL SEDIMENT SHALL BE REMOVED AND DISPOSED OF
PROPERLY.
• FOREBAY AND VEGETATED SHELF SHALL BE CONSTRUCTED PER
THIS PLAN.
• VEGETATED SHELF SHALL BE PLANTED PER PLANT SCHEDULE
ON THIS SHEET.
• TOWN OF GARNER REQUIRES FINAL CERTIFICATION OF SCM BY
PROFESSIONAL ENGINEER.
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10/01/15
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2ND COMMENT
112015
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12 07-15
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SPECIAL USE SITE PLAN
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Job No.
Drawn By
15-0390
MEM
Date
Designer
10/01/15
KAP
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Revisions
1
1ST COMMENT
1102-15
RESPONSES
2
2ND COMMENT
112015
RESPONSES
3RD COMMENT
3
RESPONSES
12 07-15
MODIFICATION TO
4
SPECIAL USE SITE PLAN
04-27-16
5
MODIFICATIONTO
05-23-16
SPECIAL USE SITE PLAN
Sheet No.
C7.2

�4,.I_
4" SLOTTED PVC
CONTECH A2000 OR —j—
APPROVED EQUAL 6"
#57 WASHED STONE ENVELOPE-,,,�
DOWNSTREAM FACE OF
TO DAYLIGHT
SUPPORT TO ALLOW PLACEMENT
CONCRETE PIPE CRADLE (TYPICAL)
4" SOLID PVCJ
4" SLOTTED PVC
CONTECH A2000 OR
APPROVED EQUAL
GRANULAR FILTER MATERIAL
ASTM C-33 CONCRETE SAND
OR NCDOT 2S SAND AS
APPROVED BY GEOTECHNICAL
ENGINEER
6" J
36"
DIAPHRAGM DRAIN DETAIL
2'
MIN.
`i
FINISHED GRADE
TOP OF FILTER TO BE AT
NORMAL POOL ELEVATION
END CAP OUTLET PIPE
ELEVATION
OUTLET PIPE CRADLE
SEE DETAIL
8" MIN.
CLASS "A" CONCRETE
(3,000 PSI) TOM EE
NCDOT STANDARD
SPECIFICATION 1000-4
BATTER AT
--------
11-1:10V SLOPE
NOTE: (8" MIN)J
IF PIPE IS INSTALLED IN EXCAVATED TRENCH,
THEN SIDE WALLS MAY CONFORM TO TRENCH
(TRENCH MAY BE USED AS CRADLE FORM)
(TEMPORARY) 2
MINIMUM LIMITS OF
EXCAVATION FOR
PRINCIPAL SPILLWAY
LIMITS OF EXCAVATION
FOR FILTER DIAPHRAGM
4" SLOTTED PVC
CONTECH A2000 OR APPROVED EQUAL
PIPE CRADLE DETAIL
20' MIN,
CONCRETE-/
CRADLE
3' 8' 3'
OUTLET PIPE FILTER DIAPHRAGM &
CONCRETE CRADLE DETAIL
NTS
SECTION
j1
2 (TEMPORARY)
NOTE:
SKIMMER MAY VARY
SLIGHTLY FROM
ILLUSTRATION
OUTLET END; CONNECTION
TO OUTLET PIPE OR RISER
VENT
SCREEN ACCESSIBLE
THROUGH DOOR
FLOAT
BARREL PIPE LONGER THAN SHOWN
NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER
FLEXIBLE JOINT (NOT TO EXCEED 3' IN
LENGTH)
TEMPORARY SEDIMENT DEVICE
DEWATERING SKIMMER DETIAL
F -w -A
NORMAL POOL
6" TOP OF FOREBAY BERM
00 00 00000000 �Q��
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1
5' MIN --
L-► A
FOREBAY SPILLWAY TYPICAL DETAIL
• TOP WIDTH SHALL BE NO LESS THAN 5'
• USE NCDOT CLASS "B" RIP RAP TO FILL SPILLWAY
• SLOPES FROM SPILLWAY BOTTOM TO TOP OF BERM
SHOULD BE NO STEEPER THAN 2:1
NTS
�5' MIN--{
SECTION A—A
FOREBAY SPILL WAY DETAIL
NTS
„ X„
HORIZONTAL
ALUMINUM
BARS ARE NOS
SHOWN FOR
CLARITY
HINGE ONE QUADRANT FOR
MANWAY ACCESS
io
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8•
SECTION VIEW IF WALL IS 8"
PLAN VIEW
9"
SQUARE
48" I.D.
SQUARE
SECTION VIEW
X 2" X �' ALUMINUM
IGLES @ EACH
)RNER
DIA. MTG HOLES (12
Q'D) WITH J" SST
=DGE ANCHORS
V" X 17' ALUMINUM BARS
SPACED 5" O.C. @ BASE
=RAME
ALUMINUM PLATE FRAME
I" X 64" X 6" WIDE
X2"XT"
-UMINUM
ANGLE @ EACH
CORNER
3" SST "U" BOLT LIFT LUG
—9" X 9" XJ" ALUMINUM TOP PLATE
WITH SST 3" U BOLT LIFT LUG
' X J" ALUMINUM BARS
SPACED HORIZONTALLY AS
HOWN
ACCOMMODATES A 48" X
48" I.D. FOR BOTH A 6"
AND 8" WALL
SECTION VIEW IF WALL IS 6"
TYPICAL TRASH RACK
NTS
Job No.
a
U
0
Date
a
10/01/15
U
2
2NDCOMMENT
J
o
RESPONSES
z
Q
W
12-07-15
W
J
V
0
u-
0
z
o
CL
5
MODIFICATION TO
Job No.
Drawn By
15-0390
MEM
Date
Designer
10/01/15
KAP
Revisions
1
1ST COMMENT
110215
RESPONSES
2
2NDCOMMENT
11-20-15
RESPONSES
3
3RD COMMENT
12-07-15
RESPONSES
4
MODIFICATION TO
04-27-16
SPECIAL USE SITE PLAN
5
MODIFICATION TO
05-23-16
SPECIAL USE SITE PLAN
Sheet No.
C7.3