SW4120202_APPROVED PLANS_20120328

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 1 1121 02,0 2-
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
� I2 (D Z) Z `7
YYYYMMDD

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SHEET NO.
SHEET INDEX
DESCRIPTION
0 COVER SHEET
1 SITE & UTILITY PLAN
2 PHASE 1 - GRADING DRAINAGE
&EROSION CONTROL PLAN
3 PHASE 2 - GRADING, DRAINAGE & EROSION CONTROL PLAN
4 SAND FILTER PLAN & DETAILS
5 LANDSCAPE PLAN
6 STANDARD & LANDSCAPE DETAILS
7 STANDARD DETAILS
8 EROSION CONTROL DETAILS
9 WASTE SITE PLAN
p�V151ON5
2-29-12 : Changcd catch basln Inlet protection
3-14-12 Changes per NGP N� comments
'5-22-I2 Chargc5 per Siam Water comments
-5-22-I2 Added Curb & Gutter detail
Apj jfavrdU Z�Ur;Y i44:i11�r € t' .i i sUYii tti�
required by ,P w.c,rntrv�t�r rE„�., . r�, th �arotina .
r4as ieqjircr that stcfT-nwaief system designer
rnspect during conic,:mity wtt!L Ill,.,
plans any; specs, an;t cer'``4 corriphance with =lie
rperm4w S%J.JJIPTo4

C4 P 2
6 W. -1 1Z 0 zo 4-
REMOVE EXISTING ASPHALT AND
GENERAL SITE NOTES: CLOSE EXISTING DRIVEWAY WHEN NEW CONNECTION .TO
INSTALL GRASS VEGETATION ' FRESH CUTS GROCERY DRIVEWAY HAS BEEN COMPLETED
1. BOUNDARY SURVEY BY JERRY KING _ AND IS FUNCTIONAL:
JOB # 5809 H 10 EXISTING POST OFFICE BLDG. PROPOSED RELOCATED PP
DECEMBER 17, 2009
2. DEED REFERENCE: DB 2145 PG 1225
REMOVE EXISTING CURB & GUTTER
3. PIN: 7665733113, 7665738060 &TIE NEW ASPHALT INTO EXISTING STREET 150 LF
EXIST. ASPHALT PROPOSED 6
4. TOTAL SITE AREA = 2.59 ACRES WATER LINE
/t? PROPOSED SSMH 6 (BY OTHERS)
5. ALL BEARINGS ARE GRID BEARINGS. s #
6. IRON PIPES AT ALL CORNERS UNLESS
PROPOSED TEMPORARY t PROPOSED NEW 30" CURB & GUTTER
OTHERWISE NOTED. CONSTRUCTION EASEMENT _AIR
7. CURRENT ZONING: COMMERCIAL
8. EXISTING LAND USE: VACANT s LLC pPER���s EXIST SERVICE POLE
9. PROPOSED LAND USE: SHOPPING CENTER PRpPER��� F P�JIIL� 54 37 2 Ell P . ,�, f A p
! 10. UNDERGROUND UTILITIES, WHERE DISCERNABLE pp 6 L PROPOSED
BY SURFACE APPURTENANCES (MANHOLES, LICK F P 1g5� pG 6 CAL Pg �CpM�ER�CP 35"23'- 8 R `
CP 6" X 6" TEE
V S ETC ARE SHOWN B MER NEB \
a�
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SITE
EAST AVE �o
E MAIN
NC 705 �
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CATCH BASWS, ALVE ), P pM o t
PER INFORMATION TIIO , UTILITY NOB AIINS TE PLANS EENGINEERING
Rs. ZpNE� C Z EXISTING WELL - ;
PROPOSED PLUG
W OFF
THEY SHOULD BE CONSIDERED APPROXIMATE. o
EXIST PP TO BE RELOCAT STA:00 00
11. SHOULD EXISTING CONDITIONS DIFFER FROM ` BY PROGRESS ENERGY
WHAT IS SHOWN ON THESE PLANS CONTACT i ♦ �'
VICINITY MAP
N TS
ENGINEER IMMEDIATELY. ADDITIONAL WORK N \ ♦ ,\ \
PERFORMED WITHOUT OWNERS, ENGINEERS, & �� r �ti6 ♦ \� \ SERVI EEDLINE
ARCHITECTS KNOWLEDGE & APPROVAL WILL BE �'" �j ,- _ems _'.� =' . TO BE BORED UNDER PARKING: 77 SPACES (2 HANDICAP)
DEEMED INCIDENTAL WORK WITH NO EXTRA "�' '� *`' �; \� STREET \
PAYMENTS MADE. ! PROPOSED 6"SANITARY ♦.�8 (BY OTHERS)
SEWER SERVICE PROPOSED PLUG \
12. LANDSCAPE REQUIREMENTS PER TOWN OF 15.0�� (BY OTHERS)
SEAGROVE STANDARDS. G
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plop HEAVY DUTY ASPHALT PAVEMENT 2" RPZowl \ \
OO
#00 PROPOSED 27: WATER
El / I e� _SERVICE
\ � NEW SERVICE POLE \
\` BY PROGRESS ENERGY
-30
f o ♦ s\ PROPOSED 8"SANITARY
SEWER
(BY OTHERS)
13
6"PROTECTION POST(TYP.) J \ ♦� \ �'
O \,
TRANSFORMER 22 \ Vol
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0 C T P P (70
♦o�� \ \� \
1 \�
M ER S hr t _ 18 �� \ : �Q �j \\\
PROPOSED _ 16,205 S.F.
., EXISTING WELLAA
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GROCERY STORE � �
�-. P TE 180 19 N5�`�
NI
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lry r TaperCID
\'
p 24" CONCRETE
N "P OTEC11ON POST(T) P.) CURB & GUTTER \ A \
c'piti
Q 1 Y
Taper
BEFORE YOU DIG
CALL 1-800-632-4949
N.C. ONE -CALL CENTER
IT'S THE LAW I
EAST A VE.
REMOVE EXISTING CURB & GUTTER
& TIE NEW ASPHALT INTO EXISTING STREET
\ :
.o_
\ C1 \
'
EXISTING ASPHALT ROAD
•a_
\ (55 LF BORE AND JACK)
. \\ (BY OTHERS) \
PROPOSED NEW 30" CURB & GUTTER
\
o
PRO SED SSMH # 5 \�
P V E
A
HEAVY DUTY ASPHALT. PAVEMENT
24�� y
0 A
30, MBL
PER 100') - UTILITY NOTES: — --
C TREES AND 20 SHRUBS P
5' LANDSCAPE BUFFER TREES 1. WATER & SEWER SERVICE LINES TO BE INSTALLED `�\\
IN ACCORDANCE TO THE NORTH CAROLINA
PLUMBING CODE. `
2. ALL UTILITY LOCATIONS TO BE COORDINATED WITH \
LOCAL UTILITY COMPANIES.
3, REFER TO BUILDING PLANS FOR EXACT
GRAPHIC SCALE LOCATIONS OF WATER, SEWER, GAS, ELECTRIC,
TELEPHONE, & CABLE SERVICES.
zo o 10 zo = ao 80 4. IF FIELD CONDITIONS VARY FROM
PLAN, CONTRACTOR TO CONTACT
( IN FEET) ENGINEER IMMEDIATELY.
I inch = 20 ft.
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EROSION _CONTROL NOTES:
1 PROVIDE GROUND STABILIZATION COVER WITHIN 14 DAYS
UNLESS OTHERWISE NOTED:
2. AFTER GROUND STABILIZATION AND COMPLETION OF PROJECT
ALL TEMPORARY EROSION CONTROL MEASURES CAN BE
REMOVED.
ROCK CHECK DAM (Typ.�
1 ,
DITCH "B" \
PROVIDE GROUND COVER 1
WITHIN 7 DAYS OF GRADING
2:1 SLOPES
PROVIDE GROUND COVER 1, R
WITHIN 7 DAYS OF GRADING
DISTURBED LIMITS `
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PROVIDE GROUN
COVER
WITHIN 7 DAYS 0
GRADING
303- --
REMOVE EXISTING ASPHALT AND
INSTALL GRASS VEGETATION ;, CLOSE EXISTING DRIVEWAY WHEN NEW CONNECTION TO SEQUENCEFRESH CUTS GROCERY DRIVEWAY HAS BEEN COMPLETED OF CONSTRUCTION
AND IS FUNCTIONAL.
CURB INLET #7 PHASE 1
EXISTING POST OFFICE BLDG. TOP: 284.0 PROPOSEJ�RELOCATED PP
INV. IN FROM INLET#6: 279.53
INV. IN FROM CMP OVERFLOW: 279.43 \ INV. OUT.279.33 REMOVE EXISTING CURB & GUTTER
i . OBTAIN PLAN APPROVAL FROM NCDENR- LQ AND ALL
u
& TIE NEW ASPHALT INTO EXISTING STREET OTHER APPLICABLE PERMITS PRIOR TO STARTING PROJECT:
EXIST. ASPHALT
�....<
�
2.
INSTALL TEMPORARY CONSTRUCTION ENTRANCE &TEMP. EARTH BERMS
CATCH BASIN YARD
\
3.
INSTALL SILT FENCE ALONG EASTERN BOUNDARY OF PROJECT
INLET PROTECTION
GRATE INLET #6
TOP GRATE: 285.5
�p .
S.0.
4.
INSTALL 18" RCP FROM EXIST. C.B. TO CURB INLET#7.
INV OUT. 280.5
+
PROPOSED
NEW 30" CURB & GUTTER
5,
INSTALL 15 HDPE & CMP OVERFLOW STRUCTURE FROM CI#7•
to
AND INSTALL INLET PROTECTION STRUCTURE AROUND CI#7,
„ „
DITCH G
1
'
6,
CONSTRUCT SEDIMENT TRAP "A" WITH COIR MESH FENCING (PHASE 1),
�
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f
CONNECT SKIMMER TO THE RISER AND INSTALL TEMP. DIVERSION DITCHES.
PROVIDE GROUND COVER
WITHIN 7 DAYS OF GRADING
EXIST SERVICE POLE
-
,5
00
R P '
7.
8.
INSTALL » RATE INLET#6.
INSTALL 15 RCP FROM SEDIMENT RCP FROM CI#7 TO TRAP RAP TO GRATE INLET#5
EIP,a
t8
NORTH AMERICAN
GRJENX'
AND INSTALL RIP -RAP PAD.
DS75
MATTING
GRATE INLETS
TOP GRATE: 87.5
GR
RCP
�, a,.
" G
EXISTING CURB INLET #8
CONVERT TO GRATED INLET
\
9.
INSTALL INLET PROTECTION STRUCTURES AROUND GRATE
I
�Ll_
INV OUT: 284.5
72'-i5 ® 35
4
(NCDOT STANDARD 840.35)
INLET#5 AND #6.
EXISTING
/
_
INV IN FROM CI#7: 279.10
1D,
INSTALL 15' RCP FROM INLET 1 TO SEDIMENT TRAP. INSTALL
#
l
_
\
+
INV OUT 279.10
RIP -RAP PAD & RIP --RAP INLET PROTECTION STRUCTURE.
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/
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-
♦
\
EXIST PP� E_RELOCAT
TEMPORARY SILT FENCE
11.
CLEAR & GRUB SITE
jj
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♦ ,
,
BY PROGRESS ENERGY
\
12.
GRADE DITCH A FROM SOUTWEST CORNER OF LOT TO GRATE
DITCH '7D"
/
/r
♦
���
INLET#6 AND INSTALL REQUIRED DITCH LINER.
AND
P
VIDE GROUND COVER
«e« `� r'-
-
\
\
13,
GRADE SITE INSTALL REQUIRED DITCH LINERS IN
1MTH
7 HAYS OF`PRADING
/
�`1?$, -
- -
`
DITCHES B' & C'.
1
_
OUTLET
\
14.
VEGETATE ALL DISTURBED AREAS OUTSIDE OF BUILDING PAD,
INV. 283 5
ENTRANCE DRIVES AND PARKING AREAS.
1
,
15.
INSTALL STONE ON DRIVES/PARKING AREAS AS SOON AS
DESIGN GRADE IS OBTAINED.
\ ` 16, CONSTRUCT BUILDING
\ 17. WHEN ALL AREAS OUTSIDE OF BUILDING AND PARKING AREAS HAVE
BEEN STABILIZED AND ALL INLET PROTECTION STRUCTURES
HAVE BEEN INSTALLED, CONTACT DENR FOR APPROVAL TO ADJUST
SEDIMENT TRAP TO SAND FILTER SIZE (PHASE 2) TO ACCOMMODATE FOR
` HEAVY DUTY ASPHALT PAD'EMEN \ �� FRONT PARKING LOT.
• \ \ \ �p O ` (SEE SHEET #3 FOR PHASE 2 GRADING & EROSION CONTROL)
Ilk
UA
F, ` \ ` ♦` NEW SERVICE POLE
\ ♦� BY PROGRESS ENERGY \
1 \ ♦�s\ \ LRIP-RAP PAD
OTECTION PO T(TYP.) \ \ `� 1 -X ♦ ®\ \ DISTURBED LIMITS
\ \ \ \ \ TEMPORARY SKIMMER BASIN
TRA SFORMER i SEDIMENT TRAP "A"
° \ \ \ \ \ 1 \ % cS PROVIDE GROUND COVER WITHIN
• P 7 DAYS ON SLOPES OF SEDIMENT PIT
s
M ER
°° GRATE LET #9 2 0 5 8.F. \ \ \ � � � ♦\ ` c{`5 EROSION CONTROL LEGEND
- ♦ ��
�,
TOP GRATE: 288.0 PROPOSED EXISTING WELL TEB = Temporary Earth Berm
BOTTOM X: 285.0 f� °� 0 1 ` ♦ \ G� \ TSF = Temporary Silt fence
GROCERY S T6 E \ 1 a, ' 1 '�%\♦ 15" CMP OVERFLOW INLET #9
\ , i g j OVERFLOW ELEV. 284.5
\ \ INVERT OUT ELEV. 280.04 \
\ 26• 1 v
ELECTRIC SUMP P EAST A V
DISCHARGE PIPE
1 \ aped. ��
RIP --RAP PAD \
tD IL ` `. \ REMOVE EXISTING CURB & GUTTER
\ ` 244 CON CR \ x - & TIE NEW ASPHALT INTO EXISTING STREET
\ \ \ \ "P 0 TION POST ) CURB & G R
E-
I 282.5
�TOpSar i
14
� PROPOSE NEW 30" CURB &GUTTER
\ 0. \ \
HEAVY. DUTY ASPHALT, PAVEMENT
.�
\ \ \
a� ��� INLET
INV.
�� .••�� ��� 60D.SET@BASE.5 Z�!EIR.UP10"
'�� \ \ DITCHPRO7C'O'VER
° \
DITCH "E ` \ WITH NVIDEDAYSUN GRADING /
\ \ \ PROVIDE GROUND COVER
\ \ IN 7 DAYS OF GRADING ROCK CHECK DAM
\ \ \ _ ~~ TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
2:1 SLOPES RIP .RAP INLET
\ \ - -�
\ PROVIDE GROYND COVER GRAPHIC SCALE
DISTURBED LIMITS \ \ \ WITHIN 7 DAYS F GRADING PROTECTION STRUCTURE
20 0 10 20 40 00 BEFORE YOU DIG !
NORTH AMERICAN GREEN CALL 1-800-632-4949
DS75 MATTING IN FEET) N.c. ONE -CALL CENTER
1 inch = 20 it IT'S THE LAW !
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Sheet No.
2
of 9
- - tTl�; ,I, �p� 3 ris" 1 + 1j1 _ -
i'.

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�{�
REMOVE EXISTING ASPHALT AND '
INSTALL GRASS VEGETATION t CLOSE EXISTING DRIVEWAY WHEN NEW CONNECTION TO
CONTROL �:. FRESH CUTS GROCERY DRIVEWAY HAS BEEN COMPLETEDEROSION SEQUENCE 0 F C O N ST R U CT I O N
1. PROVIDE.R: GROUND STABILIZATION COVER WITHIN 14 DAYS LET 7
AND 15 FUNCTIONAL.
UNLESS OTHERWISE NOTED. IN '
EXISTING POST OFFICE BLDG. TOP: 284.0 t PROPOSEVRELOCATED PP
2. AFTER GROUND STABILIZATION AND COMPLETION OF PROJECT INV, IN FROM INLET#6: 279.53 27943 PHASE 2
ALL TEMPORARY EROSION CONTROL MEASURES CAN BE INV. IN FROM CMP
INV. OUT:279.33 ` REMOVE EXISTING CURB & GUTTER 17. WHEN ALL AREAS OUTSIDE OF BUILDING . AND 'PARKING AREAS HAVE
REMOVED. / & TIE NEW ASPHALT INTO EXISTING STREET BEEN STABILIZED AND ALL INLET PROTECTION STRUCTURES
EXIST. ASPHALT HAVE BEEN INSTALLED,CONTACT DENR FOR APPROVAL TO ADJUST
CATCH BASIN YARD SEDIMENT TRAP TO SAND FILTER SIZE (PHASE 2) TO ACCOMMODATE FOR
GRATE INLET #6 'pS
INLET PROTECTION ' GRATE: 285.5 40, 1 FRONT PARKING LOT.
TOP
INV OUT: 280.5 PROPOSED NEW 30" CURB & GUTTER 18. INSTALL ASPHALT & CONCRETE PAVEMENT AS SOON AS APPLICABLE
to IN BUILDING PROCESS.
DITCH
„ C „ ♦ 19. WHEN ALL AREAS HAVE BEEN PAVED AND THE REMAINDER OF
�.... — x ..... ,
PROVIDE GROUND COVER � � � THE SITE HAS BEEN STABILIZED, CONTRACTOR 15 TO REMOVE
EXIST
WITHIN 7 DAYS OF GRADING T SERVICE POLE _ `r - 1 `; f THE COIR MESH BAFFLES AND SKIMMER FROM SAND FILTER
EIP a f � i8" �C4 \ (TEMP SED TRAP
NORTH AMERICAN GREEN I "A"). REMOVE ANY SEDIMENT FROM THE
Ex. CELL. INSTALL REMAINING 15" CMP & OVERFLOW STRUCTURE
GRATE INLET �.55 EXISTING CURB INLET #8 AND CONSTUCT SAND FILTER AS PER PLANS.
D S75 MATTING TOP GRATE: 287.5 — �� GR a G CONVERT TO GRATED INLET
+� _ ,
�ELL
INV OUT: 284.572 _15 . �P e 35+ '. -• (NCDOT STANDARD 840.35)20. WHEN SITE IS STABILIZED REMOVE ALL TEMPORARY EROSION AND
EXISTING — / S INV IN FROM CI#7: 279.10 SEDIMENT CONTROL MEASURES AND RESEED THESE AREAS.
INV OUT 279.10
yp. � � / � � 1 ` EXIST PP TEMPORARY SILT FENCE 21. PROVIDE TEMPORARY OR PERMINATE GROUND COVER STABILIZATION
ROCK CHECK DAM T WITHIN 14 DAYS OF COMPLETION OF ANY PHSE OF GRADING
/ ) \ \ BY PROGRESS ENERG
� DITCH '/D" n i _ � � � ` \ UNLESS OTHERWISE NOTED.
P VIDE GROUN6 COVER / ♦,ems8g�1 N
\ WITH 7 DAYS OF `PRADING /
�? a
NW -
DITCH $'Bpl
PROVIDE GROUND COVER--.ONE■■war.+— ■�■■W—
WITHIN 7 1 •GRADING. "ems'■^a•■■��" _�/\M��� I-,
SLOPES
PROVIDE GROUND COVER
WITHIN 7 DAYS OF • i�
.,ilia
.IP
DISTURBED , 1%%
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PROVIDE GROUNP COVER
WITHIN 7 DAYS OF GRADING \
I \
DISTURBED LIMITS \ \
NORTH AMERICAN GREEN
DS75 MATTING
_ i \ HEAVY DUTY, ASPHALT PA MEN�0aa \
O
'11ijoso Ilk
NEW SERVICE POLE
BY PROGRESS ENERGY \
RIP RAP PAD
AV
TION \ T TYP. ` � � \ � � -�^ ® \ DISTURBED LIMITS
OTEc c ) \ --� TEMPORARY SKIMMER BASIN
\ \
L SEDIMENT TRAP "A"
22
° TRA SFORMER � � � �
PROVIDE GROUND COVER WITHIN
\ \ \ \ 7 DAYS ON SLOPES OF SEDIMENT PIT
\ ti0,, 1 F`�, EROSION CONTROL LEGEND
M R GRATE LET PROPOSED i 205 \S.F. --
TEB = Temporary Earth Berm
TOP GRATE: 288.0 EXISTING WELL '
h0 �
BOTTOM sX: 285.0 ? _ � \ G.� \ TSF = Temporary Silt fence
GROCERY S T E \ 1$'Ox \ �� 15" CMP OVERFLOW INLET #9
\ \ 19 OVERFLOW ELEV. 284.5 \
MP TE 0 \ INV
ERT OUT ELEV. 280.04
FF ELEV. 293.0 \
ELECTRIC SUMP PbIMP11\ \ \ \ x � ' EAST A 1/E.
" DISCHARGE PIPE �� \ \ 1 , \ T p \, ��� — \
\ .� RIP RAP PAD \
D L ` \ REMOVE EXISTING CURB & GUTTER
\ 24" CONCRETE I & TIE NEW ASPHALT INTO EXISTING STREET
\ \ "P O TION POST ) CURB & GUTTER
\ \ \ TLET #2
01
1 x
R
14
� \ PROPOSED NEW 30" CURB &GUTTER
\ `-
C C T P V E \ \ �� \
\ \ HEAVY'bUTY ASPHALT PAVEMENT O
2 \ \
=mamr
mmommon
\ DITCH "E'
\ \ PROVIDE GROUND COVER
\;±TIN 7 DAYS OF GRADIN
2:1 SiOPES
\PROVIDE GROQND COVER � � GRAPHIC SCALE
WITHIN 7 DAYS `OF GRADING
20 0 10 20 40
{ IN FEET )
1 inch = 20 ft.
INLET #1 \
INV. 286.0 \
7 i�
DITCH \
PROVIDE GROUND COVER �
WITHIN 7 DAYS GRADING
TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
BEFORE YOU DIG I
CALL 1-800-632-4949
N.C. ONE —CALL CENTER
IT'S THE LAW I
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OPERATIONS -AND MAINTENANCE MANUAL
C` rn
WATERSHED PROTECTION SAND FILTER DEVICE -! , I-rl
. OPERATION OF SAND FILTER
Sand filters satisfy: the State's minimum requirements of 85% removal of Total Suspended Solids. /
The sand filter design is comprised of two basiccomponents: the sediment. chamber and. the sand /
chamber. Both are important parts of the design,, and.. neither can be omitted. The purpose of the ' •�� .
sediment chamber is to reduce the amount` of sediment that reaches the sand chamber and to
help ensure that:stormwater reaches the sand chamber as :sheet flow. The purpose of the sand f
chamber is to trap the finer sediment along. with pollutants 'attached to the sediment, and to provide,
a media for microbial removal of bacteria.
Sand filters work by receiving the first flush of runoff and settling out the heavier sediment in the
sediment chamber. Water then flows to the sand bed in sheet flow where pollutants are either
trapped or strained out. Sand filters are to be used only for drainage areas that have been
stabilized. Sediment from construction activity can quickly clog the sand filter, thereby reducing the
required size of the filter. Drainage areas directed to each sand filter should be kept below 5 acres o
in size. Larger drainage areas area less likely to be entirely impervious, and it is more difficult to ��
distribute the flow of runoff across the sand bed.
�SJ.7J
Sand filter drain pipes should always be operable so that. the 'water can be drawn down in the event �.RCp K J X
of severe rain or for repairs or maintenance. ' © V.
S
MAINTENANCE OF SAND FILTER '. C.O. INV.'e.
The installation of a sand filter can required substantial routine . and non -routine maintenance. .280.53
V
Debris and sediment can effectively plug a sand filter and prevent it from completing its intended ' s°
C.O. INV ,
function. Weekly policing of teh filter chambers adn the drainage area contributing to the basin must Q 280•60 � 00 G
be done to prevent premature clogging. Careful attention must be paid to eliminating or preventing ( PV
sources of sediment (i.e. unstable bare earth areas, sanding parking areas during winter, etc.) ENTATION CHAMBER 6® Q5�� �
f
0 •
Maintenance operations must be performed when storms of approximately one inch are not passing + %�� ���ba%1'?`IG�
'�' �( .6`' .C.O. INV
through the filter within 24 hours. The filter material surface must be inspected regularly to ensure �5 ► 280.53
that the ��moterial has not become clogged with debris (or pollutants) and has not been compacted or Cr �
become crusted over so as to prevent the free flow of water. Maintenance for sand filters consists SAN
C.Q. INv
of removing the first two or three inches of discolored sand and the replacing this with new sand. At \ 280.60 E
the some time that maintenance is performed on the sand . chamber, the sediment chamber should be a a
pumped and cleared.
1 P 0 R OW W . SH ., GU,, RD
Spillway structures and pipes including the filter drain must be inspected regularly (at least once a vE F W EL 4:0 °.
P Y P P I T 80.31 y
year) to ensure there is no blockage or structural damage. /
Filter basin repairs and maintenance will require a professional engineer to prepare a plan or detail
and certify the completion of the repairs, \ %
SAND FILTER SPECIFICATIONS
Sand used in the sand filter chamber must be either NCDOT Standard Size 2S or ASTM C-33. �!
.R
Compaction must be 95% standard proctor for fill areas.
All slopes for sedimentation chamber and sand filter chamber must be 3:!. '
Drain pipes in bottom of sand filter chamber should have screen covered with filter fabric on�) J {
exposed ends to prevent pipe from becoming clogged. /
SEQUENCE OF CONSTRUCTION - SAND FILTER # 1
1. WHEN ALL AREAS HAVE BEEN PAVED AND THE REMAINDER OF THE SITE HAS BEEN STABILIZE, CONTRACTOR IS TO REMOVE THE COIR MESH
BAFFLES AND SKIMMER FROM SAND FILTER(TEMP. SEDIMENT TRAP "A") AND REMOVE ANY SEDIMENT FROM THE CELL.
2. INSTALL REMAINING 15" CMP AND OVERFLOW STRUCTURE.
3. EXCAVATE SAND FILTER TO DESIGNED GRADES.
4. INSTALL UNDER DRAIN SYSTEM.
5. SHAPE SAND FILTER EMBANKMENTS AS PER PLAN.
6. ONCE FINAL GRADE IS OBTAINED, CONTRACTOR TO OBTAIN AS -BUILT OF SAND FILTER FOR ENGINEER TO CERTIFY THATTHE DESIRED SURFACE
AREA, VOLUME AND ELEVATIONS OF ALL STRUCTURES HAVE BEEN OBTAINED PRIORTO SEEDING AND MULCHING EMBANKMENTS.
7. INSTALL FILTER FOREBAY.
8. SEED AND STABILIZE SLOPES WITHIN ONE WEEK OF COMPLETION OF POND. .
9. CONTRACTOR TO CLEAN OUT ANY SEDIMENT THAT MAY ACCUMULATE AFTER A STORM EVENT DURING POND CONSTRUCTION. ALL SEDIMENT
IS TO BE REMOVED PRIOR TO PLACING POND INTO OPERATION. `
10. NOTIFY ENGINEER FOR FINAL INSPECTION.
11. ONCE SAND FILTER AND ALL DISTURBED AREAS ARE STABILIZED, EROSION CONTROL MEASURES MAY BE REMOVED.
12. ANY DEVIATION FROM THE APPROVED PLANS ARE TO BE APPROVED BY THE ENGINEER AND NCDENR-WETLANDS UNIT PRIOR TO THE WORK
BEING PERFORMED.
1
1
NOTES:
BRICK MASONRY CAN BE COMMON
CLAY BRICK, JUMBO BRICK, OR
3000 PSI CONC. LID ua QAD a a" n r CONCRETE BRICK.
ALL MORTAR JOINTS ARE TO BE
1 /2" & 1 /8".
3000 PSI CONC. BASE
SECTION A -A
3'X3' BRICK JUNCTION BOX
N TS
I _
SAND FILTER RESPONSIBILITY NOTES
I The p ro ert owner is responsible for maintainingthe completed filter asdirect d ermanent sand
by the governmental office having jurisdiction for watershed protection.
The permanent sand falter shall have full design volume available prior to any issuance
of certificates of occupancy for the site and/or prior to any plat recordation for the site.
This moy require the cleanout and disposal of sediment from the device.
The government office having jurisdiction for watershed protection and their assigns have
right of access to the permanent sand filter for inspections and maintenance enforcement.
Final approval of installed runoff control structures will be required at finalization of the
grading permit or at issuance of the final building certificate of occupancy (compliance),
whichever comes later. If neither a building permit nor a grading permit is required for a site,
then any required runoff control structure shall be substantially completed prior to installation
SEDIMENT CH MBER `� of any built -upon area an the site. Engineering certification of completion shall be required
�C►ev prior to final approval by the Enforcement Officer.
I�284,5 _
SAND CHAMEIER O7 5
NSEDIMENT CHAMBER
34.8' 39.8': ' 94.8
t:
TOP BERM TRASH GUARD
EL 286.00 CMP OVERFLOW w/TRASH GUARD CMP OVERFLOW W /
OVERFLOW ELEV. 284.50 OVERFLOW ELEV. 284,50
INV OUT 280.31 TOP SAND INV OUT 280.04
5.0' z EL. 282.50
� PVC CLEAN OUT
c
o 3.0 _ R w 3.0, o
cv 3 TOP -RIP RAP N x. N y:1
W.L. 284.50 EL 284.50 ' W.L. 284.50 W.L. 284.50
r
ANTI -FLOTATION BLOCK ' ..,
2 CF. CONCRETE SECURED `
MAINTENANCE NOTE: TO CORRIGATED TEE
BOTTOM SEDIMENTATION ANTI -FLOTATION BLOCK
1. ANY DEBRIS MUST BE REMOVED FROM THE FACE OF THE RIP -RAP GRAVEL BERM CHAMBER EL. 782.00 �6- SCH 40 PVC (SLOTTED)
� 2 CF. CONCRETE SECURED
MONTHLY. REMOVE ANY DEBRIS FROM THE SURROUNDING AREAS THAT COULD ENTER N to BRICK JUNCTION BOX INV. 280.17 TO CORRIGATED TEE
EITHER CHAMBER OF THE SAND FILTER. KEY TRENCH TO BE MINIMUM N v BOTTOM SAND FILTER
cn
2. GRASS MUST BE MOWED REGULARLY TO MAINTAIN A GRASS HEIGHT BETWEEN 3"-6". OF 1' BELOW EXISTING GRADE _ CHAMBER EL. 280.50 ANTI -FLOTATION BLOCK
GRASS CLIPPINGS MUST BE BAGGED AND NOT BE ALLOWED TO COLLECT ON THE SAND < ONE LAYER , TEXTILE FABRIC, GEOTEX 117F-WOVEN MONOFILAMENT 4.5 CF. CONCRETE SECURED
NOTE: COMPACTION MUST BE N ~ a
FILTER. o W. �GEO TE"XT1LE .OR APPROVED EQUIVALENT BETWEEN GRAVEL AND SAND TO CORRIGATED PIPE AT EQUAL SPACING
95% STANDARD PROCTOR FOR FILL U o AND GRAVEL AND `EARTHEN BOTTOM OF FILTER CHAMBER ALONG PIPE.
3. ANY ERODED AREAS AROUND THE FILTER ARE: TO BE REPAIRED IMMEDIATELY TO
PREVENT ANY SILT FROM ENTERING THE FILTER. 8" GRAVEL _BED, UNDERDRAIN AROUND
PIPE, 47$ WASHED STONE
4. AS PART OF MONTHLY MAINTENANCE, REMOVE ANY DEBRIS AROUND ANY CATCH BASIN
OR PIPE INLET TO PREVENT ENTRANCE INTO THE DRAINAGE NETWORK. REMOVE ANY DEBRIS FROM PERMANENT EROSION MEASURES SUCH AS THE ROCK CHECK FILTER DAM AT THE SAND FILTER SECTION DETAIL
PIPE INLET.
NOT TO SCALE
BEFORE YOU DIG !
CALL 1-800-632-4949
N.C. ONE -CALL CENTER
. IT'S THE LAW I
TOP BERM
EL 286.00
r 5.0'
UNDISTURBED EARTH OR-/
COMPACTED TO 95% PROCTOR
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Sheet No.
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100' MIN. OR 4X CIRCUMFERENCE OF
LARGEST TIRE (WHICHEVER IS GREATER)
4" MIN. EXISTING
4" MIN. PAVEMENT
EXISTING FlLTER CLOTH
GROUND
SIDE ELEVATION
F 100' MIN, OR 4X CIRCUMFERENCE OF
LARGEST TIRE (WHICHEVER IS GREATER)
10' MIN. OR
EXISTING 25' RADIUS
GROUND
A- i
25'
JIN.
EXISTING
PAVEMENT
2•-3' CLEAN STONE J 10' MIN. OR
25' RADIUS
PLAN VIEW
CONSTRUCTION SPECIFICATIONS
I 1. STONE - USE COARSE AGGREGATE (2-3 INCH STONE)
2, LENGTH - AS EFFECTIVE, BUT NOT LESS THAN 100 FEET
3. THICKNESS - NOT LESS THAN EIGHT(8) INCHES
4. WIDTH - NOT LESS THAN FULL WIDTH OF ALL POINTS OF INGRESS OR EGRESS
5. WASHING - WHEN NECESSARY, WHEELS SHALL BE CLEANED TO REMOVE SEDIMENT
PRIOR TO ENTRANCE ONTO PUBLIC RIGHT-OF-WAY. WHEN WASHING IS REQUIRED,
IT SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE WHICH DRAINS
INTO AN APPROVED SEDIMENT TRAP OR SEDIMENT BASIN. ALL SEDIMENT SHALL BE
PREVENTED FROM ENTERING ANY STORM DRAIN, DITCH, OR WATERCOURSE. THROUGH
USE OF SAND BAGS, GRAVEL, BOARDS OR OTHER APPROVED METHODS.
6. MAINTENANCE - THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL
PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC RIGHT-OF-WAY, THIS
MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE AS CONDITIONS DEMAND
AND REPAIR AND/OR CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT. ALL
SEDIMENT SPILLED, DROPPED, WASHED, OR TRACKED ONTO PUBLIC RIGHT-OF-WAY
MUST BE REMOVED IMMEDIATELY.
STABILIZED CONSTRUCTION ENTRANCE
NTS
COMPACTED
SOIL � 2' MIN, +
FLOW
• •:'.:.,,•;._;.., 18' MIN. 1_
6' TYP
CONSTRUCTION SPECIFICATIONS
1, REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS, AND OTHER
OBJECTIONAL MATERIAL.
2: ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION MEETS ALL DESIGN
REQUIREMENTS,
3. ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE
DESIGN ELEVATION PLUS THE SPECIFIED SETTLEMENT,
4. PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT MACHINE
REGRADING AND CLEANOUT,
5. VEGETATE THE RIDGE IMMEDIATELY AFTER CONSTRUCTION, UNLESS IT WILL
REMAIN IN PLACE LESS THAN 30 WORKING DAYS.
MAINTENANCE
INSPECT TEMPORARY DIVERSION 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 WITH THE NATURAL GROUND LEVEL END
APPROPRIATELY STABILIZE IT,
TEMPORARY EARTH BERM
N.T.S.
METAL POSTS
1.5' INTO GROUND
ilk
.VANIZED HARDWARE
EXTENDS TO TOP
Rnx
#57 WASHE
STONE
AL
AL
AL
STANDARD CATCH BASIN
YARD INLET PROTECTION
NTS
12 GAUGE 4"x4" OR 2"x2" WELDED WIRE
HOOKED ONTO PREFORMED CHANNELS
ON METAL POSTS
ULTRAVIOLET RESISTANT GEOTEXTILE FABRIC
OR EQUIVILENT SECURED TO WIRE WITH
METAL CLIPS OR WIRE AT 8" ON CENTER.
MAX SEDIMENT STORAGE LEVEL IS 1/2 HEIGHT.
REMOVE SEDIMENT WHEN THIS LEVEL HAS BEEN
REACHED OR AS DIRECTED BY THE
CONSERVATION ENGINEER
NATURAL GRADE
I CARRY 6 TO 12 INCHES OF FABRIC
as INTO TRENCH. COVER WITH SOIL, TAMP
AND BACKFILL
CARRY 6 INCHES OF WIRE INTO TRENCH
00
METAL POSTS AT 8' O.C. MAX
POSTS MUST BE 2' DEEP MIN.
NOTE:
SILT FENCES SHOULD NOT BE USED AT PIPE OUTLETS OR
IN AREAS OF CONCENTRATED FLOW
(CREEKS, DITCHES, SWALES, ETC.)
TEMPORARY SILT FENCE
N.T.S,
PIPE OUTLET TO
WELL—DEFINED CHANNEL
NOTES
1. La IS THE LENGTH OF RIPRAP
APRON
2. d=1.5 TIMES THE MAXIMUM
STONE DIAMETER BUT NOT LESS
THAN 6".
3. IN A WELL-DEFINED CHANNEL
EXTEND THE APRON UP ON THE
CHANNEL BANKS TO AN
ELEVATION OF 6" ABOVE THE
MAXIMUM TALLWATER DEPTH OR
TO TOP PF THE BANK,
WHICHEVER IS LESS.
4. A FILTER BLANKET OR FILTER
FABRIC SHOULD BE INSTALLED
BETWEEN THE RIP -RAP AND
SOIL FOUNDATION.
SECTION A -A BLANKET
RIP -RAP INLET/OUTLET PROTECTION
N.T.S.
1. PREPARE SOIL BEFORE INSTALLING BLANKETS, INCLUDING APPLICA 77ON OF LIME,
FERTILIZER, AND SEED.
2. BEGIN AT THE TOP OF THE CHANNEL BY ANCHORING THE BLANKET /N A 6" DEEP
X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
J. ROLL CENTER BLANKET /N DIRECTION OF. WATER FLOW ON BOTTOM OF CHANNEL.
4. PLACE BLANKETS END OVER END (SHINGLE STYLE) WI TH A 6 " 011 AP. USE A
DOUBLE ROW OF STAGGERED STAPLES 4" APART TO SECURE BLANKETS:
5. FULL LENGTH EDGE OF BLANKETS A T TOP OF SIDE SLOPES MUST BE ANCHORED
IN 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER
STAPLING,
6. BLANKETS ON SIDE SLOPES MUST BE OVERLAPPED 4 " 0 VER THE CENTER BLANKET
AND STAPLED (2" FOR C350 MA TT/NG).
7. IN HIGH FLOW CHANNEL APPLICATIONS, A STAPLE CHECK SLOT /S RECOMMENDED
AT 30 TO 40 FOOT INTERVALS USE A ROW OF STAPLES 4" APART OVER ENTIRE
WIDTH OF THE CHANNEL. PLACE A SECOND ROW 4" BELOW THE FIRST ROW IN A
STAGGERED PA TTERN.
8. THE TERMINAL END OF THE BLANKETS MUST BE ANCHORED IN A 6" DEEP X 6" WIDE
TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
NORTH AMERICAN GREEN
TEMPORARY DITCH LINING
INSTALLATION GUIDE
N. T.S.
FIRST CHAMBER SECOND CHAMBER OUTLET ZONE
INLET ZONE 25% OF SURFACE 25% OF SURFACE 15% OF SURFACE
35% OF SURFACE AREA AREA AREA
AREA
--
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AVAI
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STEEL POST MIN, 24" IN---,-" '� COIR MESH OR SIMILAR,
GROUND BELOW BOTTOM STAPLED OR TRENCHED
OF SED. TRAP SECTION INTO BOTTOM OR SIDE, TYP.
BAFFLES MADE OF 700 G/M COIR EROSION BLANKET
SIMILAR TO AND INSTALLED AS SEDIMENT FENCE. TYP OF
3 EA, BASIN, (2 1F BASIN IS 20' OR LESS IN LENGTH,
TEMPORARY SEDIMENT TRAP "All
N.T.S.
TOP ELEVATION OF STORMWATER
1 MAX
LLJ
�11 11� 11
DESIGN OF SPILLWAYS . EXISTING
SLOPE 0
DRAINAGE AREA WEIR LENGTH
(ACRES) (FT) CLASS I RIP -RAP
1 4 VARIES FILTER FABRIC
2 6
3 1 SIDE VIEW
5 12
i DIMENSIONS SHOWN ARE MINIMAL
EX►5 i)NG SLOPE
-RAP STEP SEQUENCE
� FRONT VIEW " """""" a'"'"`
TEMPORARY CHECK D AN
NTS
MAXIMUM PLACEMENT OF POST USING HOGWIRE WITH
APPROVED EROSION CONTROL FABRICS TO. BE 10 FEET. VARIES (SEE PLAN)
MAXIMUM PLACEMENT OF POST WITHOUT HOG WIRE USING }�-2' MIN. _
APPROVED EROSION CONTROL FABRICS TO BE I�
6 FEET. TO 8 FEET APART. POST
POST METAL T-POST 5 FEET OR 6 FEET IN HEIGHT SILT -FENCE SILT -FENCE
DEPENDING ON FiLL SLOPE. OVER HOG WIRE OVER HOG WIRE
FABRIC 36 INCHES IN WIDTH (MUST MEET_ ENGINEERS
SPECIFICATIONS FOR EROSION CONTROL)
STONE #4 WASHED STONE TO BE PLACED 12 INCHES
DEEP AT SILT FENCE
HOG WIRE
METAL FENCE POST
SILT -FENCE_ SILT -FENCE
1,5 FT.
MIN,
2 ?<
PLOW 1.0 FT 1
M
SEDIMENT nj STRUCTURAL STONE
CONTROL STONE 1
t4N
CROSS SECTION
TEMPORARY STONE OUTLET
N.T.S.
VENT
INLET SCREEN/DOOR'
ORIFICE INSIDE
%11111111a��BARREL PIPE OR "ARM"
NOT INCLUDED WITH SKIMMER NOTE; INLET SCREEN
SUPPLIED BY USER SCH 40 PIPE VARIES ON LARGER SKIMMERS'
USE 2.75"0 ORIFICE NTH 2" HEAD
& 120-1/4-0 HOLES
SKIMMERS TO BE FAIRCLOTH SKIMMERS OR APPROVED EQUAL.
SKIMMER DETAIL
NTS
NOTE•
57RUC7LARAL 57LWE SHALL BE a
SEDIMENT CaNTROL STONE SHALL
OR NO. 57 STONE.
TOP OF BERM SHALL BE A MINIM
FOOT BELOW THE .SHOULDER U4
DI PER-90N PANT
A rO rAL SEDIMENT FRAP VOLUML
CUBIC FEET PER ACRE OF DiSTURCCD AREA SEDIMENT
-WOULD BE PROVIDED. SOME 0r PC RCOUIRED CONTROL STONE PLAN VIEW
PMUME MAY BE PROVIDED BY UP 04
DO►W57REAM CONTROLS
RIP -RAP HEADWALL, 1 ' MIN
HEIGHT FROM ROAD SHOULDER
SEDIMENT
STORAGE 3'
MIN. STRUCTURAL
1
� 3.5' MIN
TOP VIEW
METAL
FENCE POST
MIN.
FRONT VIEW
SILT -FENCE
^1 IVM uM ,.nor
NOTE:
STRUCTURAL STONE SHALL BE
(CLASS "B" STONE FOR EROSION
CONTROL PURPOSES.
SEDIMENT CONTROL STONE
RIP -RAP
WITH ST
N.T.S.
NA 7ZIRAL
GROUND
ROTECTION
PERMANENT SEEDING
DEF/NI T/ON
Seeding disturbed areas with perennial grasses and (or) legumes to provide a
permanent vegetative cover to lessen runoff and soil erosion.
PURPOSE
To lessen soil erosion and permanently stabilize disturbed areas created by
grading of construction sites
CONDITIONS WHERE PRACTICE APPLIES
All bare soil areas on construction sites which are not covered by structures
or other erosion control devices.
PREPARA TION
Prepare seedbed by ripping, chiseling, harrowing or plowing to depth of six
inches so as to produce a loose, friable surface. Remove a// stones,
boulders, stumps or debris from the surface which would prohibit germination
or plant growth. Spread topsoil in a layer 3" - 6" depth.
Incorporate into the soil 800 to 7,000 pounds of 10-10-10 fertilizer plus 500
pounds of twenty percent (209) superphosphate per acre and two tons of
dolomitic lime per acre unless soil tests indicate that a lower rate of lime
can be used.
Mulch after seeding with 1.5 tons of grain straw per acre and either crimp
straw into soil or tack with liquid asphalt at 400 gallons per acre or
emulsified asphalt at 300 gallons per acre.
PLANTS &_MIXTURE
PLAN77NG RA TE/ACRE
PLANTING DA 7ES
Tall Fescue
100-150 lbs.
Aug. 15
- Oct. 15
(Low Maintenance)
Feb. 15
- May 1
Tall fescue
200-250 lbs.
Aug. 15
- Oct. 15
Waterways and
Lawns (High Maint.)
Feb. 75
- May 1
Blend of two turf-
200-25C lbs.
Aug. 15
- Oct. 15
type tall Fescues
(909) and two or
Feb. 15
-Moy 1
more improved
Ken tucky bluegrass
vorie ties (70,9 )
(high maintenance
Toll Fescue
100 lbs.
Feb. 15
-May 1
and
and
Aug. 15
-- Oct. 15
Kobe or Korean
20-25 /bs,
Lespedeza
Tall Fescue
50 lbs./acre
Nov. 1 -
Feb. 1
(Unscarified)
Tall Fescue and
60 /bs,
July and August
German Millet or
and
Sudangrass 2
30 lbs.
Tall Fescue
70 lbs.
Nov. 1 -
Jan. 30
and
and
RYegroi17 2
25 lbs.
Common Sermudogross
8 lbs. (hulled)
April 15
- June 30
15-20 lbs. (unhulled)
Feb. 1 -
March 30
1 For spring seedings, use Scarified Lespedeza seed For late fall and
win ter seedings, use unscorified
seed.
2 Annuals such as Millet,
Sudangrass and Ryegrain must be
kept at 10- 12"
maximum .height.
TEMPORARY SEEDING SPECIFICATIONS
PIEDMONT REGION
Application Rates lb/ac
Recommended
Seeding Dates
Species
Seed
10-10-10
Agriculurai
Straw
Fertilizer
Limestone
Winter Wheat
120
Jan. 1 May 1
Annual Lespedeza
50
750
2,000
4,000
(Kobe)
May I - Aug 15
German Millet
40
750
2,Q00
4,000
Aug 15 - Dec 30
Ryegrain
120
1,000
2,000
4,000
GENERAL EROSION CONTROL NOTES
THE CONTRACTOR SHALL TAKE ALL REASONABLE PRECAUTIONS TO AVOID THE SILTING OF
STREAMS, LAKES OR OTHER WATER COURSES DUE TO THE CONSTRUCTION OF THIS PROJECT,
EFFECTIVE EROSION CONTROL MEASURES SHALL BE INITIATED PRIOR TO THE COMMENCEMENT
OF CLEARING, GRADING, EXCAVATION, OR OTHER OPERATIONS THAT WLL DISTURB THE NATURAL
PROTECTION. THE EROSION CONTROL DETAILS SHOWN HEREIN ARE FOR THE CONTRACTOR'S
REFERENCE. THE DETERMINATION OF WHICH DETAIL IS APPLICABLE AS THE WORK PROGRESSES
SHALL BE AS SHOWN ON THE PLANS OR MADE BY THE ENGINEER.
ALL DITCHES SHALL BE STABILIZED AS SOON AS IS PRACTICABLE TO MINIMIZE EROSION.
THE CONTRACTOR IS REFERRED TO THE DETAILED SPECIFICATIONS FOR A DESCRIPTION OF ADDITIONAL.
EROSION CONTROL REQUIREMENTS.
THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL DEVICES IN A GOOD, WORKING STATE OF
REPAIR UNTIL THEIR USE IS NO LONGER WARRANTED. AT THAT TIME, THE EROSION CONTROL DEVICES
SHALL BE REMOVED AND DISPOSED OF SO AS TO CAUSE NO STREAM SILTATION,
WHERE CULVERT PIPES ARE TO BE INSTALLED UNDER ROADWAYS, THE CONTRACTOR SHALL INSTALL THE
CULVERTS AS RAPIDLY AS IS PRACTICAL, BACK FILL IMMEDIATELY AND RIP RAP THE UPSTREAM AND
DOWNSTREAM SIDES OF THE STREAM CHANNEL.
NORTH AMERICAN GREEN S-75
OR EQUAL FOR TEMPORARY LINING
CHANNELS A---F
NTS
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Sheet No.
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