Winston Salem 421 Quarry-FIG-2 GRADING PLAN-PH.2 (with cross-section line)

GENERAL NOTES
LEGEND
U.S. HIGHWAY 421
1
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/ EX/STING
h0�if TREELINE 1�hI _ TEMPORARY FILL AREA
/ DRAINAGE DITCH
EX/STING (STAGE 1 FILL GRADING)
RIP -RAP INLET
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PROTECTION 1 6\ >8 PROPOSED /EXISTING
SITEFNCING
TEMPORARY NOT K <) STREAM 18 0 HDPE
BUFFER l // I SLOPE DRAINop - �
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30' VMC PRIVATE
ACCESS EASEMENT
'LIMITS OF DISTURBANCE _
8.35 ACRES
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\ \ / \ - I �'�\ \ SUMP AND RAISE SUMP FLOOR
EXNG
SUMP TO INCLUDE ONE ROCK
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\-� \\ / D5o STONE SIZE OF 6" BUFFER ��\ � -//� (\ \ \ � 1" / / /
EXISTING I I PROPOSED RIP -RAP APRON <
TREEL/NE I I �\ ELEV = VARIES AS SUMP BOTTOM IS FILLED
\ La = 26.00 FT. I 1-1
\\ \ \ \ \ \\ \ \ \ \ \ 1 \ \ \ \ \ I I ) I W1 = 27.50 FT.
W2 = 4.50 FT v
MIN DEPTH8
=1N. 38 IN
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1. SEE SHEET C001 FOR GENERAL NOTES.
2. CONTRACTOR SHALL REFER TO OTHER PLANS WITHIN THIS
CONSTRUCTION SET FOR OTHER PERTINENT INFORMATION.
IT IS NOT THE ENGINEER'S INTENT THAT ANY SINGLE PLAN
SHEET IN THIS SET OF DOCUMENTS FULLY DEPICT ALL
WORK ASSOCIATED WITH THE PROJECT.
PHASE 2 CONSTRUCTION SEQUENCE
1. INSTALL PUMP WITH INLET PROTECTION IN BOTTOM OF
SUMP PRIOR TO FILL OPERATIONS COMMENCING. PUMP
DISCHARGE TO BE ROUTED TO THE 18"0 RCP PIPE
CULVERT INVERT.
2. CONTRACTOR TO BEGIN FILL OPERATIONS IN PIT. FILL
MATERIAL SHALL BE COMPACTED TO A MIN. 90%
STANDARD PROCTOR.
3. IT IS RECOMMENDED THE CONTRACTOR PLACE FILL UNTIL
POND BERM REACHES A HEIGHT OF 10 FT ABOVE POND
BOTTOM. ONCE THE 10 FT ELEVATION IS REACHED
CONTRACTOR SHALL FILL BOTTOM OF POND UNTIL A 2FT
BERM HEIGHT IS REACHED. PUMP WITH INLET PROTECTION
& STONE BAFFLES SHALL BE ADJUSTED AS POND BOTTOM
IS ADJUSTED.
4. DISCHARGE ALL SUMP STORM WATER INTO THE 18"0 RCP
PIPE CULVERT INVERT, CULVERT THEN DIVERTS STORM
WATER TO POLISHING BASIN. POLISHING BASIN WILL ALLOW
FOR THE SETTLING OF ANY REMAINING SEDIMENT FROM
THE PIT FILL OPERATION. OWNER/CONTRACTOR TO
COORDINATE WITH THE ENGINEER TO DETERMINE
RETENTION TIME OF POLISHING POND WATER PRIOR TO
RELEASE TO SILAS CREEK.
5. ALL STORM WATER PUMPED INTO THE POLISHING BASIN
SHALL MEET NPDES REQUIREMENTS PRIOR TO RELEASING
INTO SILAS CREEK. THE SKIMMER WITHIN THE POLISHING
BASIN IS TO BE MANUALLY RELEASED BY THE OWNER/
CONTRACTOR WHEN THE WATER WITHIN THE POND
COMPLIES WITH THE NPDES PERMIT REQUIREMENTS AND
CONDITIONS.
PROPERTY LINE
EXISTING FEMA 100-YEAR FLOODPLAIN
EXISTING FEMA FLOODWAY
EXISTING 50-FT STREAM BUFFER
EXISTING 25-FT UNDISTURBED BUFFER
EXISTING STREAM
EXISTING TREE LINE
EXISTING CHAIN -LINK FENCE
EXISTING EDGE OF PAVEMENT
-- EXISTING UNPAVED ROAD
EXISTING STORM SEWER LINE
- 1000 -- EXISTING INDEX CONTOUR
EXISTING INTERMEDIATE CONTOUR
PROPOSED GRAVEL ACCESS ROAD
PROPOSED TREE LINE
PROPOSED STORM SEWER LINE
720 PROPOSED INDEX CONTOUR
722 PROPOSED INTERMEDIATE CONTOUR
------ aw so so PROPOSED DRAINAGE DITCH
LIMITS OF DISTURBANCE
X PROPOSED SILT FENCE
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BEFORE YOU D1011
CALL 1-800-632-4949
N.C. ONE -CALL
CENTER IT'S THE LAWI
REFERENCE
1. EXISTING SITE BOUNDARY AND TOPOGRAPHICAL INFORMATION
PROVIDED BY VULCAN MATERIALS COMPANY, INC. ON
AUGUST 2, 2021.
SHEET NUMBER
SCALE IN FEET
0 60 120 NORTH CAROLINA BOARD OF EXAMINERS FOR C301
ENGINEERS AND SURVEYORS LICENSE NO. C-3035