Sheet7e Wetland disturbance Cross Sections 24X36

Horizontal Scale 1" — 259
6
6
6
6
6
6
6
644
640
1.5 X PIPE AREA RISER
ISOLATED VIEW
Site Entrance Pond Refurbishment Des
Undisturbed Stream Buffer
ign
Silt Fence
Permit Boundary
//
200' Unexcavated Buffer Swale
Silt Fence Exisitng Pond Embankment \ '
74'
70'
64'
52'
48'
Diversion RPrm Swale Exisitng Water Depth <4'
Roadway Planter
A
6
Gravel
Paved
ASI
aved
Wrenn
Road
__ __ _ _
_ —
_ _ — — — —
— — — — — —
Location of Wetland Impact fill of 4-feet
total wetland impact 950-sgft or 0.022 acres
Current Topography
Not to Scale RIP RAP
LINED CHANNELS
TRASH GUARD GRAVEL FILL FOR 3-
RISER ACCESS
RISER — —_
—IIIII—IIIII—IIIII— — 2.1 2
WATER LEVEL S�000s 1.5 d MAX
8°
COMPACTED EAR THEN"DAM, 6"(MIN)
REMOVABLE 1 1-III
30ARDS OR STOP -i
LOGS
V-SHAPED
CROSS SECTIONAL VIEW ANTI -SEEP COLLAR
— III=IIIII—
000 --IIIII—IIIII-11�
'O—_ — SMOOTHLY BLEND
; I I— j 1 l CONTACT AREA
FILTER FABRIC OR
GRAVEL BEDDING
(SHAPED BY MOTOR GRADER)
d MAX
STONE CLASSIFICATION
RIP RAP DEPTH
8"
A
12"
12"
B
18"
18"
CLASS 1
27"
24"
CLASS 2
36"
Expansion of existing pond (cleanouts) to 6-foot permanent water level
internal pond slopes designed and to be compacted to 2 to 1 slope
installation of V-shaped Rip=Rap swale parrallel to gated access road
658
654'
650'
Fill for Roadway
Current Wetland Feature Lateral Extent
Horizontal Scale 1» - 10' Wetland Extent Creek Crossing Cross -Section and
Total wetland impact 1,977-sgft or 0.05 acres
Pre -cast Concrete Blocks
two courses high baCkfieldd with -earthen fill
FILTER FABRIC
o\
°wIIIIIIII-
\ INVERT CLASS 1 RIP RAP / HEADWALL —i
I oo FLOW PIPE /
/llllllll%i SED/MF / #57 WASHED STONE. 1' THICK X 3' HIGH MIN.
NT STORAGE ARIA
PLAN VIEW
MAINTENANCE:
REMOVE SEDIMENT & RESTORE THE SEDIMENT
STORAGE AREA TO ITS ORIGINAL DIMENSION
WHEN SEDIMENT HAS ACCUMULATED TO 1/2
DESIGN DEPTH OF THE TRAP.
ANY RIP -RAP DISPLACED FROM
THE STONE HORSESHOE MUST
BE REPLACED IMMEDIATELY.
DATA BLOCK
MAX CIA PIPE IS 36"
RIP RAP HEADWALL (1' MIN HEIGHT
FROM ROAD SHOULDER).
,a -
NATURAL
O
\
GROUND
000
FLOW —
CLASS 1 RIP -RAP
#57 WASHED STONE. V MIN THICKNESS.
CROSS SECTION
NOTES:
IF EXCAVATED STORAGE AREA IS USED AS
TEMPORARY SEDIMENT TRAP, THE DESIGN CRITERIA
FOR TEMPORARY SEDIMENT TRAP MUST BE SATISFIED.
BASIN N0.
DRAINAGE
AREA
(ACRES)
ID VOLUME
BASIN SURFACEN
EH (FT.)
P
H/2
(FEET)
REQUIRE
(CUBIC FT.)
PROVIDED
(CUBIC FT.)
REQUIRED
(SQ FT.)
PROVIDED
ED
(SQ FT.)
HF-1
1
3,500
3,750
395
625
3
6.5
HF-2
1
3,500
3,750
395
625
3
6.5
HF-3
1
3,500
3,750
395
625
3
6.5
HF-4
1
3,500
3,750
395
625
3
6.5
FILTER FABRIC
Existina Tor)oaraph
Existing 36-inch CMP
to be replaced with two (2) 48 inch CMP 40-foot in length
Capacity of both pipes - bank full flow
ELEVATION
3:
0
J
Pre —cast Concrete Blocks EARTH FILL COVERED BY
\ LARGE ANGULAR ROCK
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a
�25'
f!wt
MINIMUM
25' MINIMUM
�w
wZ
Z
TOP OF BANK
N =
TOP OF BANK
U
PLAN VIEW
tail
Current Topography
r / -
H F 1 il.A -
/-
626
xisting
' \J
622'
Pipe
r r
618 .�.
61 4' ; -
610' -
606'
602' — 6°
598'
HF-3
674'
670'
664'
660'
656'
652'
648'
644'
640'
E_HF�4
No Maximum Extent FIII
Roadway Cross —Section
Ditch to Horseshoe Filter Ditch to Horseshoe Filter
Roadway Coarse Gravel
General Notes
No. Revision/Issue Date
Firm Name and Address
1�210RROCK 0
CAROLINA SUNROCK LLC
200 HORIZON DRIVE, SUITE 100
RALEIGH, NC 27615
Project Name and Address
Prospect Hill Quarry
& Distribution Center
Site Entrance Pond
Creek Crossing
Cross —Sections
Drawn By: S Martino
Project
Sheet
PLANT
Date
1
7
08-13-2019
(
Scale
As Shown