NCC222009_Site Plan or Location Map_20220531

SUFFICIENT TO DIRECT ALL SEDIMENT -LADEN STORMWA TER INTO A SEDIMENT CONTROL DEVICE. MUST BE INSTALLED
PRIOR TO CLEARING AND GRUBBING OF THE AREA (OR IN CONJUNCTION WITH THIS OPERATION IF SEDIMENT
CONTROLS AND DIVERSIONS ARE INSTALLED AS EACH CRITICAL POINT IS REACHED).
A- DIVERSIONS SHOULD BE LOCATED TO MINIMIZE DAMAGES BY CONSTRUCTION OPERATIONS.
B- DIVERSIONS SHOULD BE SEEDED & MULCHED IF THEY ARE TO REMAIN IN PLACE OVER 30 DAYS.
C- CHECK DEVICE AFTER EACH RAIN, BUT ONCE A WEEK REGARDLESS REPAIR AS NECESSARY.
12" MIN
SLOPE 2.1 Z /�O
MAX COMPACTED FILL I I III BERM
NATURAL GROUND OR �11-I
FILL / CUT SLOPES I I I I I I I
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II�II�II�II�II�IIII�IIIIIIIII� "
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NATURAL GROUND OR FAO\
FILL /CUT SLOPES 18" MIN DEPTH - 1 DITCH
=,1111�11111�11111111111T. II1111111=11
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FLOW
12" MIN 18" MIN DEPTH
NATURAL GROUND OR1I-
FILL /CUT SLOPES III- ' BERM/DITCH
NOTES.
POSITIVE GRADE MUST BE PROVIDED TO ASSURE DRAINAGE IF SLOPE EXCEEDS 2%, SEED AND MULCH DIVERSION. TRY NOT
TO EXCEED 5% (HIGH VELOCITIES RESULT). MAXIMUM D. A. = 5 ACRES WITHOUT SUPPORTING CALCS. DIVERSIONS AT THE
TOP OF SLOPES MUST EMPTY INTO AN APPROVED SLOPE DRAIN. BERM/DITCH IS MOST COMMONLY USED
MAINTENANCE:
INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL. IMMEDIATELY REMOVE 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 AREA WITH
NATURAL GROUND LEVEL AND STABILIZE APPROPMATEL Y.
TEMPORARY DIVERSION BERM / DITCH
20'R
NOTES.
G,?,O
I -4A
8" MIN
2-3" COARSE AGGREGATE
FILTER FABRIC UNDER STONE
AND ON SIDES
4•cjr411
APPLICABLE AT ALL POINTS OF
INGRESS AND EGRESS UNTIL SITE IS
STABILIZED. FREQUENT CHECKS OF
THE DEVICE AND TIMELY
MAINTENANCE MUST BE PROVIDED
BY CONTRACTOR.
so,
WASHED STONE PAD TO BE 501 X 25'W X 6" TH MINIMUM (1001 MIN IN URBAN AREAS). IF THE
ADJOINING ROADWAY IS WIDER THAN 25', THEN THE WASHED STONE SHALL BE AS WIDE AS THE
ADJOINING ROADWAY.
IL11:7J/IJ[e1:71U11��i]i�iyullJllulllu�r.Lr��.luluc.7.7 rr�� ►ael�rally:�'L9C/ I��B��:Z.]%IU�.a
ENTRANCE(S) SHOULD BE LOCATED TO PROVIDE FOR MAXIMUM USE BYALL CONSTRUCTION
VEHICLES.
MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR DIRECT FLOW OF
MUD ONTO ADJACENT STREETS.
PERIODIC TOP DRESSING WITH STONE (2" THICK) WILL BE NECESSARY. ANY MATERIAL WHICH
STILL MAKES IT ONTO THE ROAD MUST BE CLEANED UP IMMEDIATELY.
TEMPORARY GRAVEL
CONSTRUCTION ENTRANCE / EXIT
NOT TO SCALE
T
AT
ZONE AE (100 YEAR)
FLOODPLAIN
PROPOSED SEPTIC AREA
BUFFER AREA
Diversion / Ditch Schedule
Name
Q25
C S
V25
s
Sideslopes
X.7
Slope (%)
Depth (ft)
Flow Depth
t
Shear Stress
s
Lining
TD-1 / PD-1
2.56
3.04
3
4.20%
1.50
0.53
1.39
NAG-DS75
TD-2 / PD-2
7.71
3.64
3
3.25%
1.50
0.84
1.71
NAG-DS150
TD-3
7.21
2.65
3
1.45%
1.50
0.95
0.86
NAG-DS75
TD-4
2.03
2.77
3
3.83%
7.50
0.49
7.78
NAG-DS75
EX. ROW
MELVIN DENTON 16195353
/ ALAMANCE COUNTY
e / f DB 4134 /478 NC GRID COORDINATES
J SIZE. 12.17 AC NAD 83(2011)
j USE. VACANT N 809532.69
EX. TREELINE
E 1912817 73
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667
/TO-3
SW/
CONCRETE OUT
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PROJECTS � / / I I/ ///--- I l
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I I I I I I I I I I ♦ I I / / // / / � // - 2 //
-Tl� / / -' CIMLAND c
/ / 161952
ITD 4 / / / ALAMAN5FICOUNTY
DB 4178 / 678 / - -
\ E 32.44 A i
DA = 255,642 cE
�P (5187,4/C) // /' ,' ,/ 4
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I I ZONE E (10q VEARA
I I FLOODLAIN
- tN€STERN BOUADAR1� DEFINED\BV
THE CENkRLINE\OF -'OTE� CRtEK"
PEkEXISTING BO NDA�Y SgRVEY
BY BVSWEL SURV YORS . JOB
NO. 2f-101-�INOODATED4�16/220 \I
,/
SKIMMER BASIN (TSB) SCHEDULE:
DRAINAGE AREA:
5.87 AC
Q25:
0.20 x 7.92 IN/HR x 5.87 AC = 9.30 CFS
REQUIRED PROVIDED AT 519.50
VOLUME (CF):
9,572 9,563
SUFACEAREA (SF):
3,021 4,818
DEPTH (FT):
2.00 2.50
WEIR WIDETH (FT):
- 10
WEIR ELEVATION (FT):
- 527.50
TOP BASIN ELEVATION (FT):
- 529.00
BOTTOM BASIN ELEVATION (FT):
- 525.00
DESIGN STORM ELEVATION (FT):
- 527.50
SKIMMER SIZE
SCHEDULE:
REQUIRED BASIN VOLUME.
9,572 CF
DAYS TO DRAIN.
3 DAYS
SKIMMER SIZE.
2001,
ORIFICE RADIUS.
1.00"
ORIFICE DIAMETER.
1.90"
ON -SITE DISTURBED AREA
271,021 SF (6.22 AC)
OFF -SITE DISTURBED AREA
3,149 SF (0.07 AC)
TOTAL DISTURBED AREA
274,170 SF (6.29 AC)
PERMITTED DISTURBED AREA
304,920 SF (7.00 AC)
Know what's below.
Call before you dig.
GRAPHIC SCALE
25 0 25 50 100
(IN FEET)
1 inch = 50 ft.
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C3 PROJECT #
21-026
REVIEW PROJECT #:
XX-XXX
SHEET #
C-1.2A