SW8960812_Approved Plans_19970110

VICINITY MAP
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SITE PLAN
SCALE: 111 = 100'
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i LEGEND
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--- — --- CLEARING AND GRUBBING LIMITS
\ ---- --- PROPERTY LINE
f" 37 EXISTING CONTOUR
41 PROPOSED CONTOUR
---------- - - - —= EXISTING DITCHES
---- --- PROPOSED DITCHES
EROSION CONTROL AROUND INLETS
FRAME AND GRATE
FRAM AND GRATE
PRECAST CONC. BASIN
W/ KNOCKOUT PANELS
4SIDES
OUTFLOW PIPE
NCDOT CLASS A OR B
EROSION CONTROL
STONE
41' TO 6" #57
STONE ON UPSTREAM
FACE
FILTER
FABRIC -�
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EROSION CONTROL NARRATIVE AND NOTES
A. NARRATIVE: THE PROJECT SITE CONTAINS 14.5 __ ACRES OF z LAND � �
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WITH LIGHTLY VEGETATED, SANDY CLAY O_
TOPSOIL AND GRADES RANGING FROM 0.5N, TO 1.0% o3
APPROXIMATELY 10 ACRES WILL BE GRADED TO ALLOW w
CONSTRUCTION OF A PAVED RACE TRACK Q © loc,
N - THE RUNOFF FROM THE __ ---- -----
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SITE IS ESTIMATED USING THE RATIONAL METHOD, 10 YEAR DESIGN a
STORM AND RAINFALL DATA FOR THE AREA. CONSTRUCTION IS ►
SCHEDULED TO BEGIN AS SOON AS ALL PERMITS AND APPROVALS ARE
OBTAINED.INLET PLAN:
a
BASIN, FRAME AND 4
GRATE MAY VAIN Lu
e�� RY NONESSENTIAL. DIMENSIONS.
B. EROSION CONTROL MEASURES: TEMPORARY MEASURES TO INSURE o
CONTROL OF SEDIMENT MOVEMENT INCLUDE TEMPORARY GRASSING °D--
STONE CHECK DAMS, CONTROL DEVICES AROUND STORMWATER INLETS ANDI ICA
OUTLETS, AND BUFFER AREAS, PERMANENT MEASURES INCLUDE A
PERMANENT STAND OF GRASS ON DISTURBED AREAS. SPECIFIC
MEASURES AND DIRECTION TO THE CONTRACTOR ARE NOTED ON THE
PLANS. 0
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C. EROSION CONTROL NOTES: 0
1. INSTALL EROSION CONTROL MEASURES BEFORE BEGINNING
CONSTRUCTION OR AS SOON THEREAFTER AS POSSIBLE. C.,►
SECTION COMPACTED N,BVRa►DE OR �
E. 2. GRADE THE SITE SO THAT ALL RUNOFF MUST PASS THROUGH THE
STONE CHECK DAMS OR THROUGH EXISTING VEGETATIVE BUFFERS
BEFORE LEAVING THE SITE.
CATCH. BASIN DETAIL �r� �
3, NO CUT OR FILL SLOPES SHALL EXCEED A SIDE SLOPE OF 1 CD
VERTICAL TO 3 HORIZONTAL. uj
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4. ALL DISTURBED AREAS SHALL BE GRASSED WITHIN 30 DAYS OF
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DISTURBANCE IN ACCORDANCE WITH THE SCHEDULE ON THIS r�
PLAN. ---
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5. ALL EROSION SHALL BE CONTROLLED INCLUDING SIDE SLOPES
BEFORE THE PROJECT IS COMPLETED,
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6. MORE STRINGENT MEASURES SHALL BE USED TO HALT EROSION I I
IF THOSE SHOWN ON THIS PLAN ARE NOT EFFECTIVE. _
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7. NO SILT SHALL BE ALLOWED TO LEAVE THE PROJECT SITE, = z o 0
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6. MAINTAIN ALL MEASURES UNTIL THE PROJECT IS COMPLETE. z z z
REMOVE ACCUMULATED SILT AS NEEDED TO KEEP THEM N mx
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FUNCTIONING PROPERLY,
9. REMOVE TEMPORARY MEASURES UPON COMPLETION OF PROJECT.
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x MEASURES q I F T` C�,
a A..L fP-ERMANENT MEASURES WILD. BE WELL ES T ADLISH►_D BEFORE
PROJECT CLOSE-OUT Z
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INLET '
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GRAVEL FILTER
WIRE SCREEN C. BLOCK
GRAVEL FILTER
O Z
WIRE SCREEN FILTERED WATER �
FILTERED WATER OVERFLOW
OVERFLOW —•► RUNOFF WATER
w/SEDIMENT —+-
RUNOFF WATER mlmmlmo
w/SEDIMENT INK D
V)
Y NT SEDIMENT
SEDIME
DROP INLETwlGRATE
WIRE SCREEN RB INLET
4 WD STUD ( �
TEMPORARYGRAVELLED SPECIFIC APPLICATION SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS THIS METHOD OF INLET PROTECTION IS
CONSTRUCTION ENTRANCE EXPECTED
XAPPLICABLE WHERE HEAVY FLOWS ARE APPLICABLE AT CURB INLETS WHERE
EXPECTEDECTEDT AND WHERE AN OVERFLOW OVERFLOW CAPABILITY IS NECESSARY TO
CAPACITY IS NECESSARY TO PREVENT PREVENT EXCESSIVE POKING IN FRONT
NTS EXCESSIVE PONDL46 AROUND STRUCTURE OF STRUCTURE
EROSION CONTROL AROUND INLETS
5' MIN. NTS . nD I
1 FT. THICK LAYER OF-----� I i I I 1 I I I I i I i l I 1 I I I I I
SECTION A -A
STONE CHECK DAM
NTS
JIVIlG VLJIJJ D — — — —
A A
CROSS SECTION 0 DES. JRN
a
ou
DESIGN
DOWN.ICI�D
OVERFILL 6" a
SETTLED ;lu
TOP „ �FOR SETTLEMENT _ Y p O DATe 08/14/95
WEIR LENGTH
r I
- NO V1,v
- SEE SITE PLAN STONE SHALL NOT SEAL
BLOCK OR IMPEDE
_ E M PIPE FLOW
2:1 SIDE SLOPE MAX c..- ; 11966 h}
PRQJ #
FILTER FABRIC - '�•'..�;�GL1•' �:
. I
_ — 1:1 SIDE SLOPE MAX SEE SITE PLAN ���ii�` ' / (.L1p
SECTION A - A
3' MIN MIRAFI 600X FILTCR PABRIC
OR APPROVED EQUAL -- —
STONE SECTION
NOTE: FILTER FABRIC AND STONE SHALL BE TOED UNDER FLARED END SECTION
TEMPORARY SILT TRAP DETAIL 00
ENERGY I)ISSIPATOR
NTS