SW5190501_Planset (Grading)_20190716

STORMWATER EASEMENT. STORMWATER CONTROL MEASURE (SCM) CONCRETE TOE WALL.
��- CONTRACTOR TO PROVIDE L=50 LF, W=10 LF 0 BOTTOM ELEV. 612 SEE (UPSTREAM) PLAN
SWALE G OUTLET- AS -BUILT PRIOR TO PROJECT WEIR ELEV.: 615 SEE SHEET C-504
COMPLETION - WEIR LENGTH=20' 50 0 25 50 100 150
(r ENERGY DISSIPATER _ — ' TOP BERM ELEV. = 616 FOR DETAIL IIII
— — ^ —i —� LENGTH: 89 -7 -7 � TOP BERM WIDTH: 10'
WIDTH: 6 / GRAPHIC SCALE 1 INCH = 50 FEET
„ _ / SIDE SLOPES: 3H:1 V
THICKNESS: 9 / I SPILLWAY (WEIR) TO BE CLASS B RIP RAP
CLASS A RIP RAP / \ CREEK IMPACT: PERMANENT CULVERT CROSSING:
I \I PIPE 3 (1) 72 LF 60" HDPE/PP (ADS N-12 & HP STORM ARE BOTH ACCEPTABLE MATERIALS)
\ \ SWALE F SWALE G \ I I SCM OUTLET INV. UP ELEV.: 603.0
69 LF 12" HDPE PIPE INV. DN ELEV.: 602.2
INV. UP: 612.5 INV. ELEV. IS 1' BELOW CHANNEL BOTTOM
INV. DOWN: 612.0 SEE TOW WALL DETAIL ON SHEET C-504
(2) CONCRETE TOE WALL
UPSTREAM SPRING LINE ELEV.. 605.5
DOWNSTREAM SPRING LINE ELEV.: 604.7
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: 6.0' 49' W x 20' L x 27" D, CLASS II RIP RAP (DOWNSTREAM)
r WIDTH: 3.0
THICKNESS: 22"
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 BUFFER ZONE
\ \ \ \ \ I 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
LENGTH: 8'
I I \ \ \ \ SWALE D2 OUTLET
WIDTH: 6
ENERGY DISSIPATER SWALE THICKNESS: 9"
LENGTH: 12 CROSS- CLASS A RIP RAP ,
WIDTH: 6 SECTION
THICKNESS: 22 TRANSITION SWALE D1
f 31 LF
\ I \ \ \ PIPE 1 CLASS B RIP RAP
28 LF 189' HDPE PIPE
\ \ \ \ \ \ j / III TIE GRAVEL TO EXISTING
— \ \ \ 1 � \ \ \ \ I �I I � � ASPHALT WITH SMOOTH
\ INV. UP: 520.38 \ I \ I SWALE D2
1 � I II
\ \ \ �o \ \ \ ° i I TRANSITION. SLOPE OF ACCESS
\ INV. DOWN: 620.11 \ li / / �
\ \ \ DRIVE SHALL MATCH THAT OF
� I I � / / / / \
PIPE 2 OUTLET EXISTING ASPHALT PARKING
I 1 \ \ \ \ \ \ \ / I ,.-MINIMUM 50 LF ALONG
\
\ \ \ \ \ \ I 1 ENERGY DISSIPATER �, ^' cs 6*00 ` I / ALIGNMENT, STARTING AT STA. \ I LENGTH: 9' ° �5 8 — — — — — — / / /
0+00.
\ \ \ \ \ WIDTH: 4.5' \ \ \ �� �, �4+0— o�
\ \ \ \ \ THICKNESS: 22» \ '�. ��� I ) I y' o I oU C_5 6 s oo L3
\ \ CLASS B RIP RAP
/ I8+35.34
�x� \
I \ \ \ / I
I1
\ \ SWALE E SWALE C
C3
PIPE 2 II I I ( \/
66 LF 15 HDPE PIPE
\ \ I
\ \ \ \ \ \ \ \ x • I INV. UP: 616.5
\ INV. DOWN: 615.0
PROVIDE POSITIVE \ 1 \ \
DRAINAGE AWAY I i
FROM ACCESS DRIVE
\ \ \ \ \ 6'6 \ \ oti'`� / I " SUCH THAT WATER
I
I
�1 C DOES NOT SHEET
6 \ / I / /
o ,� I I FLOW ACROSS THE
\ \ \ \ \ x I I I I' . z \ TURN -AROUND
I�\� I
SWALE B tio• / � I � � I I I I I I I I \% \�. � \ � � I � \ � \ � , / /
PIPE 2 OUTLET
R \ `ENERGY DISSIPATE
\ \ \ \ \ \ \ \ \ I LENGTH: 7.5
WIDTH: 3.75'
THICKNESS: 22"
\ \ \ \ \ \ SWALE A CLASS B RIP RAP41,
SITE GRADING NOTES `
1. CONTRACTOR SHALL REPAIR ALL DISTURBED AREAS TO
EQUAL OR BETTER CONDITION THAN THE ORIGINAL SITE,
OR AS NOTED.
2. SITE GRADING SHALL MATCH EXISTING GRADES WITH SMOOTH
TRANSITIONS.
3. ALL GRADING MUST PRODUCE SURFACE DRAINAGE ADEQUATE
TO PREVENT STANDING WATER AND ENSURE THAT STORMWATER
IS DIRECTED AS INTENDED.
4. CUT/FILL SLOPES SHALL BE 3:1 MAX. UNLESS NOTED OTHERWISE
ON PLANS.
5. ALL DIMENSIONS AND GRADES ON THE PLANS SHALL BE FIELD
VERIFIED BY THE CONTRACTOR PRIOR TO CONSTRUCTION.
CONTRACTOR SHALL NOTIFY THE ENGINEER IF ANY DISCREPANCIES
ARE DISCOVERED.
6. SIDEWALK SHALL HAVE 5% MAX. LONGITUDINAL SLOPE AND 2%
MAX. CROSS SLOPE.
7. CONTRACTOR SHALL ENSURE ALL RIP RAP ENERGY DISSIPATORS
ON FILL SLOPES EXTEND TO THE BOTTOM OF THE SLOPE,
OR THE FULL DESIGN LENGTH, WHICHEVER IS GREATER. THE
CONTRACTOR SHALL VERIFY EXTENTS OF RIP RAP WITH THE
ENGINEER PRIOR TO PROJECT COMPLETION.
CONCRETE TOE WALL. / 11 I ..�' \ / / / / I I AS -BUILT PRIOR TO
SEE (DOWNSTREAM) / .r' / / / I PROJECT COMPLETION
SEE SHEET C-504 /
FOR DETAIL
e
PERMANENT DOWNSTREAM
STABILIZATION. CLASS II 1
RIP RAP
=NERAL NOTES:
NO WETLAND IMPACTS HAVE BEEN IDENTIFIED WITHIN THE PROJECT AREA AND NONE ARE SHOWN STORMWATER EASEMENT TO rn
ON THIS PLAN. IMPACTS TO THE UNNAMED TRIBUTARY OF BLOODRUN CREEK ARE SHOWN ON TIE TO PUBLIC RIGHT OF WAY EDGE OF =
SHEET C-505. EXISTING (� b
PAVEMENTcn
\
USACE NATION WIDE PERMIT VERIFICATION AND ANY OTHER APPROVAL OR EXEMPTION RELATED R n'I =
— — — — — v STORMWATE
TO 401 /404 PERMITTING MUST BE SUBMITTED TO SILER CITY PLANNING AND COMMUNITY — EASEMENT m
DEVELOPMENT PRIOR TO FINAL ZONING INSPECTION APPROVAL OF THIS PROJECT OR ANY 10, � 1 1
ADDITIONAL ZONING PERMITS REQUIRED FOR FUTURE DEVELOPMENT OF THE PROJECT PARCEL. — — 1
STORMWATER EASEMENT TO FOLLOW THE SOUTHEAST SIDE OF THE EXISTING SCHOOL ACCESS HAMP STONE ROAD _
DRIVE, AS SHOWN ON THIS SHEET. CONTRACTOR TO VERIFY EXTENTS OF ACCESS DRIVE AND 60' PUBLIC RIGHT OF WAY Ama SEE MATCH LINE
I
STORMWATER EASEMENT BOUNDARY AS PART OF AS -BUILT SURVEY COLLECTION AND VERIFY 100 0 50 100 Zoo TO I
WITH ENGINEER. INSET A THIS SHEET
GRAPHIC SCALE 1 INCH = 100 FEET
CONTRACTOR SHALL PROVIDE AS -BUILT SURVEY OF SCM, SWALES, AND MAINTENANCE EASEMENT
TO OWNER AND ENGINEER, PRIOR TO PROJECT COMPLETION. SURVEY SHALL BE CONDUCTED BY
NC LICENSED LAND SURVEYOR. CONTRACTOR SHALL COORDINATE WITH ENGINEER TO ENSURE
AS -BUILT SURVEY CONTAINS ADEQUATE INFORMATION FOR ENGINEER TO PRODUCE AS -BUILT
DRAWINGS.
1 04/17/19 MDO SILER CITY P&CD : SITE PLAN REVIEW #1
NO. DATE BY REVISION DESCRIPTION
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