SW5190501_Planset (Grading)_20190910

STORMWATER EASEMENT.
CONTRACTOR TO PROVIDE
AS —BUILT PRIOR TO PROJECT
COMPLETION
3' WIDE X 15' LONG CONC. FLUME
(SEE DETAIL)
i DRY DETENTION BASIN
L=148 LF, W= 47 LF
WEIR ELEV.: 614.50
WEIR LENGTH=28'
TOP BERM ELEV. = 616
CONCRETE TOE WALL.
SEE (UPSTREAM)
SEE SHEET C-504 50
FOR DETAIL III
7 �.wm1
0 25 50
\ — — TOP BERM WIDTH: 5' —'
/ 1 GRAPHIC SCALE
SIDE SLOPES: 3H:1 V
SPILLWAY (WEIR) TO BE CLASS B RIP RAP
100 150
1 INCH = 50 FEET
\ \ \ SWALE F �-_ \ \ C:KttK IMF'A(.: 1: F'tKMANtN I (.:ULVtK I C:KU551NC�:
OUTLET CONTROL (1) 72 LF 60 HDPE/PP (ADS N-12 & HP STORM ARE BOTH ACCEPTABLE MATERIALS)
STRUCTURE (SEE INV. UP ELEV.: 603.0
DETAIL) INV. DN ELEV.: 602.2
61;.72 INV. ELEV. IS 1' BELOW CHANNEL BOTTOM
SEE TOW WALL DETAIL ON SHEET C-504
PIPE 3
SCM OUTLET (2) CONCRETE TOE WALL
36 LF 12" RCP PIPE UPSTREAM SPRING LINE ELEV: 605.5
'INV. UP: 612.00 DOWNSTREAM SPRING LINE ELEV: 604.7
INV. DOWN: 611.82 SEE SHEET C-504 FOR TOE WALL DETAIL
PIPE 3 OUTLET CREEK IMPACT: PERMANENT STABILIZATION
ENERGY DISSIPATER (1) 20 LF RIP RAP CHANNEL LINER
LENGTH: 26.0 49' W x 20' L x 27" D, CLASS II RIP RAP (DOWNSTREAM)
SWALE G I ri WIDTH: 12.5
THICKNESS: 18"
CONTINUE TO STABILIZE DISTURBED BANKS, BEYOND THE RIP —RAP SHOWN. INSTALL FULLY
CLASS B RIP RAP
BIODEGRADABLE COIR MATTING (NO BACKING) ON ALL DISTURBED AREAS OF CREEK SIDE
SLOPES, OVERLAP MATTING MIN. OF 2' TO ADJACENT NON —DISTURBED AREAS. DO NOT MAT
CREEK BOTTOM.
100' 14UFFER ZONE -
\ \ \ \ STABILIZE UPSTREAM FILL SLOPE WITH CLASS II
RIP RAP. THIS WILL NOT EXTEND TO THE SWALE D1 OUTLET
STREAM BANK STABILIZATION. SEE SHEET (TRANSITION)
— C 505 FOR STREAM BANK STABILIZATION ENERGY DISSIPATER
l I \ \ \ I LENGTH: 8'
SWALE D2 OUTLET WIDTH: 6
ENERGY DISSIPATER SWALE THICKNESS: 9"
LENGTH: 12' CROSS— CLASS A RIP RAP ,
WIDTH: 6 SECTION
TRANSITION
THICKNESS: 22 SWALE D1
PIPE 1 I II I CLASS B RIP RAP f 31 LF
\ \ \ \ \ \ \
\ \ \ \ \
28 LF 18 HDPE PIPE \j / II TIE GRAVEL TO EXISTING
INV. UP: 620.38
_ \ \ \ l I \ \ \ \\ I i I I SWALE D2 ASPHALT WITH SMOOTH
\ \ I I I
\ 1 \ \ \ \ \ \ I ! TRANSITION. SLOPE OF ACCESS
\ \ \ INV. DOWN: 620.11 \ \ \ / DRIVE SHALL MATCH THAT OF
\ 1 I 1 1 \ \ PIPE 1 OUTLET I \ \ \ \ ' EXISTING ASPHALT PARKING
\ \ l I MINIMUM 50 LF ALONG
\ \ \ \ \ \ I 1 ENERGY DISSIPATER �, cs 6*00 I / ALIGNMENT, STARTING AT STA.
\ I LENGTH: 9' � L5 8 ®— � / /
WIDTH: 4.5' \ \ � = 0+00.
\ 3+00 4 1 \
\ \ \ \ \ \ I THICKNESS: 22" ,y. I I o cs 5 00
\ \ CLASS B RIP RAP
1 � I
4D
1\ SWALE E SWALE C
PIPE 2 II I I (C3\
66 LF 15" HDPE PIPE
\ \ \ \ \ \ \ \ x �.�• J INV. UP: 616.5
\ INV. DOWN: 615.0 Ili I \ I I ii
PROVIDE POSITIVE
DRAINAGE AWAY
\ \ \ \ \ \ x I
0 / / I I I / I I \ FROM ACCESS DRIVE \ 1
I / SUCH THAT WATER
\ � I
/
\ /
,� I I \ FLOW ACROSS THE
o / / h I / / I I I I I I II':�\\ Z \ \ 1 TURN —AROUND / / / / /
SWALE B \�
I
PIPE 2 OUTLET
ENERGY DISSIPATER
LENGTH: 7.5 ( r/
WIDTH: 3.75
\ \ O THICKNESS: 2299
\ \ \ \ \ \ SWALE A CLASS B RIP RAP
STORMWATER EASEMEN
\ \ \ \ \ \ \ \ CONTRACTOR TO PROV
\ I \
SITE GRADING NOTES \ �� \ \ \ \ 6 — —°; : °` / I CONCRETE TOE WALL. / I ,!"� \ / / I I I AS —BUILT PRIOR TO
\ \ \ \ \ \ SEE DOWNSTREAM �..!' / / / I PROJECT COMPLETION
1. CONTRACTOR SHALL REPAIR ALL DISTURBED AREAS TO \ \ \ \ \ \ / SEE SHEET C-504 /
EQUAL OR BETTER CONDITION THAN THE ORIGINAL SITE, \ \ \\ \ \ / I FOR DETAIL" r ,I I I l qD I I \
OR AS NOTED. \ \ \ \ \ \ / / / I �f I \ \
2. SITE GRADING SHALL MATCH EXISTING GRADES WITH SMOOTH \ \ \ \ \ \ / / I I I I ( 1�..1"� %� PERMANENT DOWNSTREAMSTABILIZATION. CLASS II �76`
TRANSITIONS. \ \ i / I I- — .�"� \ \
� \ I I % J ,� RIP RAP \ \
3. ALL GRADING MUST PRODUCE SURFACE DRAINAGE ADEQUATE GENERAL NOTES:
TO PREVENT STANDING WATER AND ENSURE THAT STORMWATER cn \ \
IS DIRECTED AS INTENDED. 1. NO WETLAND IMPACTS HAVE BEEN IDENTIFIED WITHIN THE PROJECT AREA AND NONE ARE SHOWN STORMWATER EASEMENT TO � \
ON THIS PLAN. IMPACTS TO THE UNNAMED TRIBUTARY OF BLOODRUN CREEK ARE SHOWN ON TIE TO PUBUC RIGHT OF WAY EDGE OF =
EMSTING
4. CUT/FILL SLOPES SHALL BE 3:1 MAX. UNLESS NOTED OTHERWISE SHEET C-505. PAVEMENT N D
ON PLANS. — ®_ — — — f T n
2. USA NATIONWIDE PERMIT VERIFICATION AND ANY OTHER STATE/FEDERAL APPROVAL OR — _ _ STORMWATER m _
5. ALL DIMENSIONS AND GRADES ON THE PLANS SHALL BE FIELD EXEMPTION RELATED TO 401 /404 PERMITTING MUST BE SUBMITTED TO SILER CITY PLANNING EASEMENT � r
AND COMMUNITY DEVELOPMENT PRIOR TO CONSTRUCTION. Z
VERIFIED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. m
CONTRACTOR SHALL NOTIFY THE ENGINEER IF ANY DISCREPANCIES 3. STORMWATER EASEMENT TO FOLLOW THE SOUTHEAST SIDE OF THE EXISTING SCHOOL ACCESS 10 \
ARE DISCOVERED. HAMP STONE ROAD
DRIVE, AS SHOWN ON THIS SHEET. CONTRACTOR TO VERIFY EXTENTS OF ACCESS DRIVE AND 60' PUBLIC RIGHT OF WAY
6. SIDEWALK SHALL HAVE 5% MAX. LONGITUDINAL SLOPE AND 2% STORMWATER EASEMENT BOUNDARY AS PART OF AS —BUILT SURVEY COLLECTION AND VERIFY
100 0 50 100 200 3 0
WITH ENGINEER. SEE MATCH LINE I
MAX. CROSS SLOPE. INSET A THIS SHEET
GRAPHIC SCALE IINCH = 100 FEET
7. CONTRACTOR SHALL ENSURE ALL RIP RAP ENERGY DISSIPATORS 4. CONTRACTOR SHALL PROVIDE AS —BUILT SURVEY OF SCM, SWALES, AND MAINTENANCE EASEMENT
ON FILL SLOPES EXTEND TO THE BOTTOM OF THE SLOPE, TO OWNER AND ENGINEER, PRIOR TO PROJECT COMPLETION. SURVEY SHALL BE CONDUCTED BY
OR THE FULL DESIGN LENGTH, WHICHEVER IS GREATER. THE NC LICENSED LAND SURVEYOR. CONTRACTOR SHALL COORDINATE WITH ENGINEER TO ENSURE
CONTRACTOR SHALL VERIFY EXTENTS OF RIP RAP WITH THE AS —BUILT SURVEY CONTAINS ADEQUATE INFORMATION FOR ENGINEER TO PRODUCE AS —BUILT
ENGINEER PRIOR TO PROJECT COMPLETION. DRAWINGS.
1 04/1 //19 MD O SILER CITY P&CD SITE PLAN REVIEW #1
2 08/01 /19 CDB SILER CITY P&CD SITE PLAN REVIEW #2
NO. DATE BY REVISION DESCRIPTION
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