SW4210704_Plansheet - Other_20211210 (12)

NOTE- THE CONTRACTOR SHALL OBTAIN A COPY OF THE NPDES
STORM WATER PERMIT ISSUED WITH THE GRADING PERMIT
AND COMPLY WITH ALL CONDITIONS AND REQUIREMENTS
INCLUDING, BUT NOT LIMITED TO, MAINTAINING RAIN GAUGE
AT THE SITE AT ALL TIME% AND PROVISION OF INSPECTIONS BOX
TO HOUSE INSPECTIONS LOGS AND PLAN& INSPECTIONS REQUIRED
BY THE NPDES PERMIT SHALL BE PROVIDED BY THE OWNER, HOWEVER.
THE CONTRACTOR SHALL PROVIDE FOR MAINTENANCE OF EROSION
CONTROL DEVICES AS RECOMMENDED IN THE MAINTENANCE INSPECTION LOGS.
FLOOD CERTIFICATION
The undersigned hereby certifies to the best of his knowledge and
belief the location of the subject property has been checked against
area HUD/FIA maps and Information provided by the Department of
Housing and Urban Development and finds that:
The subject ( ) property
HAZARD AREA as defe-rmined by HUD/FIA flood map.
The subject property is not located in a SPECIAL FLOOD
HAZARD AREA as determined by HUD/FIA flood map.
00 The subject property islocated m an area which has
not been mapped as to flood areas by HUD/FIA.
SEDIMENT
BASIN 1
SEDIMENT
TRAP
2
SEDIMENT
TRAP
3
SEDIMENT
BASIN 4
SEDIMENT
BASIN 5
SEDIMENT
TRAP
6
WEIR LENGTH REQUIRED (Q1O)
where h = 0.5'
48" RISER
20' SPILLWAY
14
ft
14
ft
30" RISER
15' SPILLWAY
42" RISER
20' SPILLWAY
4
ft
CONSTRUCTION SEQUENCE
1' OBTAIN PLAN APPROVAL FROM NCDEQ AND ALL
APPLICABLE PERMITS FROM OTHER REVIEWING AGENCIES.
2' FLAGGING 0FALL THE CONSTRUCTION/DENUDED LIMITS AND ANY OTHER
BUFFERS SHALL BE PERFORMED PRIOR TO THE PREODNSTRUCTON MEETING. THE
CONTRACTOR IS TO STAY WITHIN THE LIMITS OF CONSTRUCTION. ANY NEED TO
CROSS THIS LIMIT LINE WILL NEED TO BE BROUGHT TO THE ATTENTION OF THE
ENGINEER PRIOR TO ANY CROSS OVER. THE CLEARING LIMITS MUST BE FLAGGED
PRIOR TO THE PRBCDNSTRUCTTON MEETING IN ORDER TO PREVENT ACCIDENTAL
ENTRY OUTSIDE THE CLEARING LIMITS.
ZL SET UP PRE -CONSTRUCTION MEETING ON SITE PRIOR TO ANY CONSTRUCTION,
WITH THE OWNER, WITH ALL CONTRACTORS INVOLVED WITH LAND DISTURBANCE
AND THE EROSION CONTROL INSPECTOR.
4. INSTALL STONE CONSTRUCTION ENTRANCE.
5 CLEAR AND GRUB THOSE AREAS NEEDED TO INSTALL EROSION CONTROL MEASURES IN
THE SEQUENCE OUTLINED BELOW. EROSION CONTROL DEVICES ARE TO BE INSTALLED BASED ON
DETAILS PROVIDED UNDER THE APPROVED PLANS, THE PLANS AND DETAILS ARE
BASED ON THEN.C. EROSION AND SEDIMENT PLANNING AND DESIGN MANUAL~
AND RECOGNIZED BEST MANAGEMENT PRACTICES8MP�). ENSURE POSITIVE
DRAINAGE TO ALL STRUCTURES ALONG DIVERSION BERMS. TQpSOlLSHAU-BE
UTILIZED IN THE SLOPES TO THE EXTENT ALLOWED BY THE QEO-TECH ENGINEER
OF RECORD. REMAINING TOPSOIL SHALL BE STORED ON LOTS CLOSE TO GRADE
AND AS APPROVED BY THE OWNER'
TOPSOIL BERMS MAY ALSO BE UTILIZED IN THE AREAS AND
SIZES APPROVED BY THE OVNNER,
7, CI FAR ENOUGH TO INSTALL SEDIMENT TRAPS. INSTALL THE SEDIMENT TRAPS.
CLEAR AREAS REQUIRED FOR THE INSTALLATION OF DIVERSION BERMS. INSTALL DIVERSION BERMS.
8. INSTALL SILT FENCE BELOW SEDIMENT TRAPS AND SEED ALL DEVER8lONS AND MEASURES.
Q' CLEAR AND GRUB REMAINDER OF THE SITE AND BEGIN GRADING.
10.AS THE SITE IS BROUGHT TO GRADE INSTALL STORM DRAINAGE AND IMMEDIATELY
INSTALL INLET PROTECTION MEASURES.
11' STABILIZE THE SITE PER THE TIME TABLES LISTED ON THIS SHEET AS WELL AS SHEET
NCQD1.
12.AS THE ROADWAY IS BROUGHT TO GRADE AND DITCHES ARE CUT IN, INSTALL DITCH
MATTING PER TABLE ON THIS SHEET.
13`ONCE ROADWAY IS BROUGHT TO GRADE, INSTALL UTILITIES. GEE SHEETS 12 AND 14
FOR ADDITIONAL DETAILS AND SEQUENCING OF THE SEVER LINE INSTALLATION
ACROSS THE STREAM. FOLLOWING INSTALLATION OF UTILITIES, REINSTALL MATTING OR
RE -SEED PREVIOUSLY STABILIZED AREAS AS NECESSARY.
14LUP0V STABILIZATION OF THE SITE, UPON APPROVAL OF THE EROSION CONTROL
,^.0=E°��� ",`urnC,n^/ mr�^^� �n� ��mr� ^m� nv^o'T ,m/croonrrrr,r*/ CU^// mC
REMOVED. SEDIMENT TRAPS AND BASINS SHALL BE FILLED. AREAS DISTURBED IN
THIS PROCESS SHALL BE STABILIZED.
15'POLLOWlNQ STABILIZATION OF SITE, REQUEST CLOSURE OF THE GRADING PERMIT FROM
THE NCDEQ EROSION CONTROL INSPECTOR.
EROSION CONTROL NOTES
1_ THE CONTRACTOR SHALL MAINTAIN CLOSE CONTACT WITH THE EROSION
CONTROL INSPECTOR. ADDITIONAL EROSION CONTROL MEASURES MAY BE
REQUIRED THAT ARE NOT INDICATED ON THE PLANS BY THE EROSION CONTROL
INSPECTOR. IT IS THE CONTRACTOR'S RESPONSIBILITY TO MAINTAIN EROSION
ONBlTE, REGARDLESS OF THE MEASURES REQUIRED. ANY CHANGE IN THE
EROSION CONTROL MEASURES AND/OR GRADING SHALL BE CALLED TO THE
ATTENTION OF THE ENGINEER AND THE EROSION CONTROL INSPECTOR.
ALL MEASURES MUST REMAIN OPERABLE UNTIL THE SITE IS S7ABIUZED.
2, EROSION CONTROL DEVICES SHALL BE DILIGENTLY MAINTAINED THROUGHOUT
CONSTRUCTION. DEVICES SHALL BE INSPECTED AND REPAIRED AFTER EACH
SIGNIFICANT RAINFALL
3. SEDIMENT TRAPS/BASINS ARE TO BE CLEANED OUT WHEN THE BASIN IS NO
MORE THAN HALF FULL THEY SHALL BE CLEARED OF ALL SILT AND RESHAPED
TO THE ORIGINAL DESIGN PARAMETER.
4. GRASS OR OTHERWISE STABILIZE ALL AREAS ASTHEY ARE BROUGHT WP TO
GRADE. STABILIZE WITH GROUND COVER. (SEE G.C. PLAN NOTES FOR
STABILIZATION REQUIREMENTS.)
5, STABILIZE WITH GROUND COVER ALL SLOPES, CUT OFFILL, WITHIN THE
TlMEFRAME LISTED ON THE ADJOINING TABLE.
6. ALL EROSION CONTROL DEVICES ARE TO REMAIN IN THE PLACE UNTIL THE
SITE IS PROPERLY STABILIZED WITH GROUND COVER. ALL UPSTREAM AREAS
MUST BE STABILIZED PRIOR TO REMOVAL QFEROSION CONTROL DEVICES. ONCE
THIS OCCURS, REMOVE SEDIMENT GRADE TO FINAL ELEVATIONS AND STABILIZE.
7. REMOVE EROSION CONTROL DEVICES ONLY UPON RECEIPT OF APPROVAL
FROM EROSION CONTROL INSPECTOR.
EL [FBLL MATERIALS ARE TO BE BROUGHT ONTO THIS PROJECTOR WASTE
MATERIALS ARE TUBE TAKEN FROM THIS PROJECT, THIS INFORMATION MUST BE
DISCLOSED AND SHOWN ON THE EROSION CONTROL AND GRADING PLAN.
BORROW AREAS AND DUMP SITES ARE CONSIDERED TO BE PART OFTHIS
PROJECT AND THE OWNER IS RESPONSIBLE FOR GTA8{Ll2A7DN AND EROSION
CONTROL MEASURES AT THESE SlTES,
0. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL SITE EROSION CONTROL
MAINTENANCE DURING CONSTRUCTION. IN ADDITION, THE CONTRACTOR SHALL BE
gEGP0VGl8LE FOR KEEPING ALL ITEMS/RECORDSREQU{RED BY THE NATIONAL
POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT.
10. AS OF MARCH 11 2003, ALL CONSTRUCTION SITES ONE (1) ACRE OR MORE,
REQUIRES A NPDES PERMIT.THEREFORE:
-WRITTEN DOCUMENTATION OF DEVIATION FROM APPROVED PLAN MUST
BE NOTED ON THE APPROVED PLANS'
-WRITTEN DOCUMENTATION OF AN EMERGENCY SITUATION WHERE SEDIMENT
HAS BEEN DISCHARGED OFF SITE MUST BERECORDED. ALSO, CONTRACTOR'S
ACTIONS TO REPAIR AND RETURN AREA TO PRE -STORM CONDITION MUST BE
RECORDED.
-THE PERMlTTEE SHALL INSPECT ALL EROSION AND SEDIMENTATION
CONTROL FACILITIES EVERY SEVEN DAYS AND WITHIN 24HOURS DFA 1 INCH
RAINFALL. FINDINGS SHALL BE RECORDED AND PRESENTED UPON INSPECTOR'S
REQUEST.
-THE CONTRACTOR SHALL PROVIDE RAIN -RECORDING DEVICE AND RECORD
EACH RAINFALL.
-ANY FAILURES THAT CAUSE VlSB]LE SEDIMENTATION TO LEAVE THE
APPROVED DISTURBED LIMITS SHALL BE CORRECTED IMMEDIATELY AND
DOCUMENTED.
-A COPY OF THE NPDES PERMIT SHOULD BE KEPT ON SITE FOR
REFERENCE.
11. THE CONTRACTOR SHALL HAVE. ON SITE THE MEANS TO REMOVE ANY
SEDIMENT TRACKED ONTO THE STREET. IF CONDITIONS REQUIRE. EQUIPMENT
MUST BE ON SITE TO WASH TIRES OF VEHICLES PRIOR TO ENTERING STREET.
APRONS
FROM
FROM
TOP/THROAT
ELEV
INV
OUT
TO
INV
IN
AREA
SUB TOTAL
C
Tc
I(l 0)
Q10=CIA
CFS
Q10(total)
PIPE
HW/D
PIPE
DIAM. (IN)
LENGTH
(L.E.)
SLOPE
ni ", ,o=
NOTE:
owwcn SHALL PROVIDE C.M.P.= CORRUGATED METAL PIPE
~~^�~ ^--^''~-'' - 8' TOP WIDTH
APPROVE ��n*� TO
ANY FILL wArsn/^L ecIwo rLxoco. ALL EL = 740.0
nu-wxrEn/xLxw000wpAorzuw*zuAuso
BE wnw/TonEn BY SOILS cwo'wscn TO BE TRASH RACK EMER. SPILL.
P*ov/osu BY OWNER. TOP OF RISER ^/ -------\. EL. = 738.5
n = 737.5
60"x6O" ANTI
SEEP COLLAR
TEWP3^
W/ 4" SCHD 40 PVC BARREL 4"
FLEXIBLE HOSE AND 4" STEEL NIPPLE
REMOVABLE 6" PLATE INV OUT
EL. 733.4
WITH 4!' THREADED HOLE TO FLANGED . DINT
RECEIVE THE 4" NIPPLE WITH GASKET
(2) #8 REBAR PREFABRICATED BARREL TO RISER
BOTTOM EL . (WATERTIGHT CONNECTION)
732.9 / INV. EL ~~ 7333
' ' )=84 Cr' NOT TO SEA�
JOOU PSI CONCRETE POURED IN
AND AROUND BASE SECTION
NOTE:
OWNER SHALL PROVIDE SOILS ENGINEER TO
APPROVE SUBGRADE AND KEYWAY PRIOR TO
ANY FILL MATERIAL BEING PLACED. ALL
FILL MATERIAL AND COMPACTION WILL ALSO
ocMONITORED oYSOILS ENGINEER mBE
rnomoco BY OWNER.
SEDIMENT BASIN No. i
2.25 5.1
NEW STABILIZATION TIME FRAMES
SITE AREA DESCRIPTION
STABILIZATION
TIME FRAME EXCEPTIONS
PERIMETER DIKES, SWAI ES, DITCHES AND SLOPES
7 DAYS
NONE
HIGH QUALITY WATER (HWQ) ZONES
7 DAYS
NONE
SLOPES STEEPER THAN 3:1
7 DAYS
IF SLOPES ARE 10' OR LESS IN LENGTH,
AND ARE NOT STEEPER THAN 2: 1,
14 DAYS ARE ALLOWED.
SLOPES 3:1 OR FLATTER
14 DAYS
7 DAYS FOR SLOPES GREATER THAN
50'IN LENGTH
ALL OTHER AREAS WITH SLOPES FLATTER THAN 4:1
14DAYS
NONE, EXCEPT FOR PERIMETERS AND HOW ZONES
**BANDED GASKETS ARE ALLOWED IN LIEU
OF FLANGED JOINT FOR ALUMINIZED STEEL
PIPE. MINIMUM BAND WITH OF 24" WITH
STRAP AND ANCHOR TO CONCRETE BASE.
NOTE:
C.M.P. = CORRUGATED METAL PIPE ~'`�` ~^ SOILS WIDTH
APPROVE SUBGRADE AND KEYWAY PRIOR TO
EL = 7283 ANY FILL MATERIAL BEING PLACED. ALL
/ ~-'3�P�L mu w���� mm COMPACTION
�rmw WILL ALSOTRASHRACK BE wowITnnso BY so|Ls swn/wccn TO BE
T0P OF RISER L = 726'�
pnomosu BY owxcn
66"x66" ANTI
30" SEEP COLLAR
C.M.P. X
TEMP 2^
W/ 4" SCHD 40 PVC BARREL 4-
FLEXIBLE HOSE AND 4" STEEL NIPPLE
REMOVABLE 6" PLATE
WITH 4" THREADED HOLE TO FLANGED , DINT
RECEIVE THE 4" NIPPLE WITH GASP ET
(2) #8 RE R PREFABRICATED BARREL TO RISER
BOTTO E (WATERTIGHT CONNECTION)
' CF I NOT TO SCALE
3000PSI CONCRETE POURED IN
AND AROUND BASE SECTION
SEDIMENT BASIN No. 4
NOTE:
C.M.P. = CORRUGATED METAL PIPE
8' TOP WIDTH
B_ = 752.2
TRASH RACK SPILL.
TOP OF RISER ^/ ~� EL = 75O�
^�h� _. �^°� � -------- � '
60"x6O" ANTI
42" SEEP COLLAR
TEMP 3" FAIRCLOTH SKIMMER W/ S.7- ORIFICE RISER 2.5 2.5
W/ 4- SCHD 40 PVC BARREL 4"
FLEXIBLE HOSE AND 4" STEEL NIPPLE
INV0T -�
EL.~~ 721^0 WITH REMOVABLE - PLATE FLANGED T
THREADED'� --- ``
RECEIVE THE 4� NIPPLE � WITH """�E'
(2) #8 °="=` PREFABRICATED BARREL TO RISER
BOTTOM EL. (WATERTIGHT CONNECTION)
' 7YV)x2.0yH)=85CF I NOT TO SCALE
3000PSl CONCRETE POURED IN
AND AROUND BASE SECTION
SEDIMENT BASIN No. 5
INNOUT
1-98
me
MM
mmmm
mmmm
4-48
5-8
6-3
COS 4-1
2-3A
0.40
6.9
0.7
1.8
1.0
3 11
3 1
5.3%
VEGETATED
3 5
0.11
3.99
0.36
1.7
0,4
rO.O
2
t24
4-4B
6.9
1.0
3 1
3 1
5.2%
VEGETATED
0.035
0.19
4.76
0.61
2.2
0.8
.0.80
E
0.
Li
Lq
00
00
La in
ry
III
LIJ
CD
ry
SHEET NO.
15
M.-