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4 ENLARGED DISPOSAL PLAN AND DETAILS

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GENERAL NOTES: SEAL
1. ALL ELEVATIONS ARE BASED ON MEAN LOW WATER (MLW) DATUM. ALL COORDINATES ARE NAD '83 Q'i
SPC AND ARE RELATIVE TO NCGS GRID MONUMENT "ISLEPORT". _ --T
N SEAL
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. HOUSES PIERS AND DOCKS ARE NOT SHOWN FOR CLARITY. DREDGE CONTRACTOR SHALL 101 OVERALL DREDGE PLAN F •.....•''pJ FLOATING DOCK y R FD
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4. HYDROGRAPHIC & CONTROL DATA PROVIDED BY ARNOLD W. CARSON, RLS PC SURVEY N co, TYPICAL DREDGE LIMITS co DESIGNED By. JRT
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dam-WITHIN END OF TAPER cDNTRGL JRT
5. DATUM IS MEAN LOW WATER & ® AI WW °1&ETM , CANALS
0.0 MLW = APPROX. -1.91 MSL OF scA~E: 1 =100 START
TAPER FILE NUMBER: 4947
TO BE EXCAVATED BY DREDGING ~ 6. APPROXIMATELY 76,000 CY OF MATERIAL DATE: 9/4/00
° CONTRACTOR AND PLACED IN EXISTING DISPOSAL AREA. OVERALL
- - STREET/PROPERTY DREDGE
7. BOTTOM OF CANALS SHALL BE CUT TO ELEVATION -6 MLW AT WIDTHS SHOWN ON
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8. CONTRACTOR SHALL TAKE CARE OF DREDGING OF CANALS ESPECIALLY AT ENTRANCE CANALS
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I, 1,704 234 0 x44 0 -o.1f14 0 0 -0. -0.7o an ~ 9/10/00
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/ `Y L 0 1.0. + N 51782.1295 E 2170964.1230 24+92.76 STATION ALONG ~ OF CANAL DREDGE PRISM ENLARGED N E 2170847.1975 DREDGE
END DREDGE BEGIN DREDGE PLAN
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1 I „1 E 21745 4.2754 9 ENLARGED DREDGE
/ 3516.9926 SCALE: 1 - 100 PLAN & DETAILS
BEGIN DREDGE
/ 0+00 SHEET NUMBER:
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Na- OF 5

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a1 N ro ~ n N ~ ° rn ~ M of/ d I O N / ~ c~
CLEARING/STRIPPING ZONE -CLEAR ENTIRE INTERIOR ~I ~ ~ J ~ C~j 41 OJ ~ ~ m N C 4i M / ~ J - J ~ i ~ ~1 I I
m rn ~ N r ~ Lam. ~ ~ - / r-'' ~ . =--r 'NN -.6 ~ \ ~ I I - - - ~ • ~ ~ ~ EXIST. DIKE i
NEW DIKE OF AREA, GRADE SURFACE OF FILL TO DRAIN. APPLY ~IIIII~~~ o' GRASS SEED & MULCH TO DIKES ~~l ~ ~ o~ = ~ _ 5' DISPOSAL AREA ~ J=T
MIN. ih ~ ~ - MIN. TOP EL. 23 MLW - - - ~ ~ _ . - - - -r - -
_ _ ~ . a ~ r~ I
• ~ ~ ~RJ ~I
2t EL. 20 MLW, DESIGN TOP OF a Id • •I
I rl
~~Yp FILLS FILL & 3' PONDING WATER... SPILLWAY 1 Y AS REQUIRED CMP EXISTING XIST. TIMBER 1 a
PROVIDE NEW SPILLWA 30 E 40S 1' 1
IF EXIST, IS DETERMINED BY THE BULKHEAD SIM. IN INOPERABLE MI
PROVIDE SILT FENCE ~ EXIST. SLOPED CONC. CONTRACTOR TO BE Id ,I
SEE 402 I
ALONG TOE OF SLOPE CANAL WALL ~ , ~I
SEE DETAIL THIS SHEET ' . . ,I
• ~I
` < APPROX. EXIST. DREDGE SPOIL ~ '
SPOIL GRADE, DISPOSAL AREA CLEAR ALL SHRUBS AND BRUSH ° ~ / VD BRUSH _ d m ~ i
" TO WITHIN 1' OF EXIST. GROUN v~: - - BURN ON SITE (WITH PROPER d o a--- / ~T. GROUND - ro
PROPER ~ a. , ~ - -
:~i~?~ ~~.(i~v/\ CUT BURNING PERMIT) OR DISPOSE ~ ~ ~ ~ DISPOSE '
OAD SS R W ~ SOIL ACCE FACE OF w , , ,
OFF SITE. GRADE SURFACE OF W ~ ~ ITLET AFTER w~ w _ ~ / i
6 MIL. POLYETHYLENE - FILL TO DRAIN TO OUTLET AFTE ~o - w T n dQ / ~
TOE-IN EDGES AT LEAST 1'-0" COMPLETION OF FILL. AFTER AF ER ~ N ~
- ~ COMPLETION, ADJUST SPILLWAY SPILLWAY ~ ~ d i ~ ,
SPLASHBOARDS TO ALLOW ENTI 407 SECTION THRU NEW DIVIDER DIKE AREA TO DRAIN. .LOW ENTIRE 0 IV
~
J J
SCALE: 1/8" = 1'-0" J
STEEL OR WOOD POST INDICATED ON PLAN AS SF---- SF
I-
SILT FENCE NOTES: W F- W
GEOFABRIC FIITER FABRIC SHALL MEET OR EXCEED 150 LBS. GRAB. m
~ ~ APPROX. EXIST. TENSILE (ASTM-D4632) & 180 PSI. BURST (A.S.T.M.- SCALE: 1 = 50 W
GRADE D-3786), GEOFABRIC SHALL BE AMOCO 2127, SYNTHETIC ~ ~
z INDUSTRIES 910SC, CONTECH C200 OR APPROVED EQUAL. I O (n
w N ~~Q O - a.
~ Si 2.) STEEL POST SHALL BE 5'-0' IN HEIGHT AND BE OF THE L6x6x1 4 O
SELF-FASTENER TYPE. N PIPE
W
_ ~ _ ~ f ~ 4.) WOOD POST SHALL BE MIN. OF 6' IN HEIGHT AND 2" SQR. OR W
2" IN DIAMETER. WIRE FABRIC SHALL BE FASTENED TO
A WOODEN POST WITH NOT LESS THAN #9 WIRE
W .J L6x4x1 /4 L6x6x1 4
FIFVATT[1N I I ~ STAPLES t-1 /2" LONG ~ ~ m
_I,~LM N~ COMPACTED 5.) CONTRACTOR TO FIELD LOCATE AS NECESSARY TO W
U ~ BACKFILL 8" TRENCH CONTROL SURFACE EROSION. W 5 8 ~ H.D. GALV. ~ J
AFTER PLACING FABRIC BOLT ~ 12 O.C.
~ . ~
W
u HALF ROUND CORRUGATED
" THK. FLASH BOARD ETAL SECTION CUT FROM 2 M
SECTION 406 SILT FENCE DETAIL 96"~x8GA. LjJ
NOT TO SCALE MIN. TOP EL. 23 MLW METAL PIPE, CORRIGATED uJ
TOP EL. 22 MLW COATED GALV., i
CHOR W 3 16" H.D.
2 AN W
nTCpncni ,4RFA N(~TFS 10. FLASHBOARDS SHALL BE S.Y. PINE #2 OR BETTER. 1ITYP GALV. WIRE ROPE TO ~ , f
viva vv it
11. SITE WORK CONSTRUCTION SEQUENCE FOR DIKES AND BORROW AREAS: Z i NEW i
1. THE CONTRACTOR SHALL VISIT THE SITE TO FAMILIARIZE A. CLEAR SPOIL AREA AND DIKES TO WITHIN 1 FOOT OF GRADE AND ' DIKE GROUND ANCHORS a Z {
HIMSELF WITH FIELD CONSTRUCTION CONDITIONS. REMOVE AND/OR BURN DEBRIS FROM SITE. 404 DETAIL SEE 408 VERTICAL GUIDE FOR t
i
A. LAYOUT: THE CONTRACTOR SHALL PROVIDE ALL LAYOUT B. INSTALL TEMPORARY SILT FENCES AND DITCH SWALES. SCALE: 1 1/2" = 1'-0" FLASH BOARDS - k
REQUIRED TO CONSTRUCT HIS WORK. A BENCHMARK AND SEE DETAIL 5404 f Ii
BASE LINE WILL BE PROVIDED BY THE ENGINEER. C. BUILD DIKES. {
D. KEEP SURFACES FREE OF RUTS AND SLOPED TO DRAIN. 2" THK. WOOD FLASH
2. DIKE CONSTRUCTION E. COMPLETE GRADING. EXIST. BOARDS -ADJUST HGT.
A. USE MATERIAL FROM INSIDE DIKE ADJACENT TO DIKE.
F. AFTER COMPLETING EARTHWORKS TO THE GRADES SHOWN, APPLY SEE DETAIL 404 DIKE ~ AS NECESSARY TO PROVIDE WATER DEPTH
3. COMPACTION: COMPACT AS NECESSARY TO PROVIDE A STABLE MULCH AND SEEDING TO DIKE SURFACES. FOR ADEQUATE SETTLING
DIKE CROSS-SECTION. FILLING & DOZER -TRACKING IN 8" TO 12" LAYERS G. NO RUTS SHALL BE LEFT IN THE SURFACE. SLOPE TO DRAIN.
IS NORMALLY ADEQUATE. USE COMPACTOR % TESTING PROCEDURES IF FLASH BOARDS SUPPORT DISCHARGE SEAL ALL OF SOIL.
NECESSARY FOR A STABLE CONDITION. H. REMOVE FILT FENCE AFTER COMPLETION OF ALL EARTH WORK. PIPE AS REQ'D TO AROUND SEAL
' PREVENT BEARING ON SEAL BOTTOM W/ 12" THK.
4. DIMENSIONS FOR DIKES AND SPILLWAY ARE TO SATISFY MINIMUM 12. GRASSING: • 12" CONC. APRON NCARp4~., EXIST. SLOPED CONC. 3,000 PSI CO\ C. sss/%
REQUIREMENTS ONLY AND CONTRACTOR SHALL PROVIDE DIKE WIDTHS APPLY SEEDING AS SPECIFIED ON EXPOSED SLOPES WITHIN 30 DAYS 21
~ AND HEIGHTS AND SPILLING CAPACITY AS NECESSARY TO SUIT HIS FOLLOWING ANY PHASE OF GRADING & ON ALL DISTURBED AREAS WITHIN 10' t CANAL WALL SEAL BOTTOM W/ 12" 12" CONC. APRON ACROSS _ a SEAL
- PUMPING RATES AND DREDGING OPERATION. 30 CALENDAR DAYS FOLLOWING COMPLETION OF CONSTRUCTION 402
• THK. 3,000 PSI CONC. (FIELD VERIFY) FRONT AS NECESSARY - 22%7 FOR STABILITY `c't'GMEEQ' 01
~ 5. DIKE SURFACES SHALL BE FINISHED SMOOTH ENOUGH TO AFFORD MINIMUM SEEDING REQUIREMENTS: EXTEND DISCHARGE Fy TR aPIPE INTO CANAL
A SATISFACTORY SMOOTH BASE FOR APPLICATION AND ANCHORAGE A. LIME: APPLY 100 POUNDS PER 1,000 SQUARE FEET
o FOR THE POLYETHYLENE MEMBRANE. B. FERTILIZER: APPLY 20 LBS. 8-8-8 PER 1,000 SQUARE FEET
~30"0 x14GA. o
~ 6. DIKE LINER SHALL BE 6 MIL POLYETHYLENE. LAP ALL EDGES 6 FEET C. SEED: NOVEMBER-MARCH: 20 LB/ACRE BERMUDA (UNHULLED) 50 LB/ACRE EXIST. SLOPED CONC. GALV. ~ ELEV. SEE PLAN 41 omcNeo BY. JRT
" AND TAPE EDGE WITH WATERPROOF TAPE. BURY TOP AND BOTTOM EDGES WINTER RYE (GRAIN) 80 LB/ACRE ~ IN TRENCH AT LEAST 12 INCHES DEEP. ADD DIRT PILES AND WINDROWS
403 SECTION CANAL WALL onevM BY. MAG att cawma: JRT
OR APPROVED PINS TO HOLD MEMBRANE DOWN THROUGHOUT DURATION FESCUE 2^ _C)/ACRE 403
OF PROJECT. REMOVE EXPOSED PORTION AFTER FILLING OPEkAilON. MAnGm NOVEMocn 50 LB/ACRE SCALE: 1 SCALE: 1/4° = 1'-u" NOTE: SCALE: NOTED i
THESE DETAILS SHOW MINIMUM REQUIREMENTS FOR CONTROLLING EXTEND VERT. SECTION FILE NUMBER 4e47
~ 7. CORRUGATED STEEL PIPE SHALL BE TYPE A, FULLY BITUMINOUS BERMUDA (UNHULLED) $0 LB/ACRE ~ WINTER RYE (GRAIN) WATER LEVEL & DISCHARGE ROUTE. CONTRACTOR SHALL INCREASE BELOW GRADE AT LEAST o^~ 9~~0/00
COATED, CONFORMING TO AASHTO M36 AND M190, GAGE AS SHOWN. FESCUE SIZE & CAPACITY AS NECESSARY TO ACCOMODATE DREDGE. HE MAY 4'-0" TO PROVIDE ENLARGED DISPOSAL kL
8. CONCRETE SHALL HAVE A COMPRESSIVE STRENGTH OF 3000 PSI AT D. MULCH: APPLY 1-1/2" TONS/ACRE WHEAT STRAW (OR APPROVED PROVIDE AND ALTERNATE SPILLWAY AS APPROVED BY ENGINEER. LATERAL SECTION. BRACE PLAN & DETAILS
28 DAYS. PROVIDE 4 TO 6 PERCENT ENTRAINED AIR. EQUAL) ON ALL SEEDED AREAS. LOWER OF EXIST. CANAL BOTTOM OR MLW 40- -2 NEW SPILLWAY SECTION AS REQ'D AS NECESSARY. SHEET NUMBER:
9. STEEL ANGLES SHALL BE A36, HOT DIP GALVANIZED WITH HOT DIP E. TACK: ALL SLOPES WITH STRAW MULCH EXCEEDING 3 TO 1 TO HAVE L( 1
~ GALVANIZED BOLTS AND WASHERS. ASPHALT TACK APPLIED AT THE RATE OF 225 GALLONS/ACRE. SCALE: 1/4" = 1'-0" 4 OF 5
~ MAINTAIN SEEDED AREAS UNTIL MINIMUM GROWTH IS ESTABLISHED
AND/OR FOR CONTRACT TIME.