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031159Ow(A)
SEDIMENT AND EROSION
CONTROL DETAILS
GRATE TO BE GEOFABRIC
OPEN CONCRETE BLOCKS SEDIMENT AND EROSION WRAPPED.
CONTROL DETAILS SPACER BLOCK EARTH BUND CONSTRUCTION NOTES
OVERLA
1. BUILD WITH GRADIENTS BETWEEN 1 PERCENT AND 5 PERCENT.
2. AVOID REMOVING TREES AND SHRUBS IF POSSIBLE - WORK AROUND THEM. ND FLOW TRAPPED SEDIMENT
ROLL OF NETTING FILLED
3. ENSURE THE STRUCTURES ARE FREE OF PROJECTIONS OR OTHER IRREGULARITIES THAT COULD IMPEDE TURF STRIPS
ALL EROSION AND SEDIMENT IN ACCORDANCE WITH IN ACCORDANCE WITH UNDISTURBED AREA
WITH 50 TO 70mm GRAVEL.
WATER FLOW.
3. BUILD THE DRAINS WITH CIRCULAR, PARABOLIC OR TRAPEZOIDAL CROSS SECTIONS, NOT V SHAPED.
LINDSAY CONSULTING PTY LTD
WITH MAROON BOOK MANUAL FOR EROSION AND SEDIMENT CONTROL KERB INLET PROTECTION 4. ENSURE THE BANKS ARE PROPERLY COMPACTED TO PREVENT FAILURE.
5. COMPLETE PERMANENT OR TEMPORARY STABILISATION WITHIN 10 DAYS OF CONSTRUCTION. LINDSAY CONSULTING PTY
NTS LTD
GRAVEL FILTER
SANDBAG OVERLAP 4.0m MIN.
ONTO KERB DIRECTION OF FLOW
GEOTEXTILE STAKES
FILTER FABRIC STAKES
TYPICAL GRASS FILTER STRIP DETAIL RPEQ 4928
DROP INLET 1.5m TIMBER STAKES OVERLA
RUNOFF WATER WITH GRATE ND FLOW TRAPPED SEDIMENT
WITH SEDIMENT AT MAX 2.5m CENTRES N.T.S. OFF. 2C/82 PARKER STREET, MAROOCHYDORE PH 54 792 118
1.5m MI
RUNOFF
TURF STRIPS BATTER GRADE
DISTURBED 1:2 max.
600mm (NOM) GAP
0.2m AREA
DIRECTION OF FLOW THIS DRAWING REMAINS THE PROPERTY OF
N.
BETWEEN SAND BAGS GEOTEXTILE CHANNEL STABILISATION UNDISTURBED
FILTERED AS REQUIRED
LINDSAY CONSULTING PTY LTD AND IS FOR
ACT AS SPILLWAY BURIED FABRIC FILTER FABRIC AREA
WATER
THREE LAYERS OF SEDIMENT FENCE NOTE:-
Min. GRADE 0.25%
SANDBAGS WITH ENDS
THE SOLE USE OF THE CLIENT. NO PART
Max. GRADE 0.75%
OVERLAPPED.
GEOTEXTILE INLET FILTER TURF FLARES TO
MUST HAVE A STABILISED OUTLET.
MAYBE USED AS CONTOUR DRAINS
DOWN STREAM GULLY PROTECTION DETAILS STAKES DRIVEN INTO GROUND W RESTRICT SCOURING
NOT TO SCALE GEOTEXTILE INLET FILTER CONSTRUCTION NOTES FL
OW
FLO ALONG TURF EDGE
MAY BE USED IN PART OR WHOLE WITHOUT
PRIOR EXPRESS WRITTEN CONSENT OF
1. FABRICATE A SEDIMENT BARRIER FROM GEOTEXTILE. GEOTEXTILE FILTER FABRIC TURF STRIP
2. FOLLOW DETAIL FOR SEDIMENT FENCE FOR GEOFABRIC BEHIND KERB CAN BE CONSTRUCTED WITH
INSTALLATION. REDUCE PICKET SPACINGS TO 1m CENTRES.
GRADIENT OF DRAIN OR WITHOUT CHANNEL
FLOW
BURY THE TOP OF THE PLASTIC
IN TRENCH MIN 300mm DEEP.
STAPLE AT 150mm CENTRES.
3. DO NOT COVER THE INLET WITH GEOTEXTILE UNLESS THE
DESIGN IS ADEQUATE TO ALLOW FOR ALL WATERS TO
BYPASS IT. FLO
W 23 24
road surface
1% to 5%
DIRECTION
ALL BATTER GRADES
2(H):1(V) MAX. SURFACE ROUGHENING LINDSAY CONSULTING PTY LTD
25
COMPACT SOIL OVER BLANKET OF FLOW
26
CLIENT AND PROJECT DESCRIPTION
PRO A 150 mm min. 300 mm min.
PER
TY SPILLWAY
CENTRELINE SECTION AT POINTS "A" HOLD IN PLACE
WITH SAND BAGS
LINE
SEDIMENT
90 DEG
GRASSED FILTER STRIPS 2 metres min.
150 MM MIN. 150 MM MIN.
TRAP
GE & LK GRAMS
FILL TRENCH WITH SOIL
nt GEOTEXTILE FILTER SOCK A NOT TO REGULAR SCALE NOTE: ONLY TO BE USED AS TEMPORARY BANK
AND COMPACT
lig nme FILLED WITH 25MM GRAVEL WHERE MAXIMUM UPSLOPE LENGTH IS 80 METRES.
OVERLAP-BURY UPPER END OF 15.0 yA
LOWER BLANKET AS IN "A". OVERLAP STAPLES: 8
GAUGE (4mm)
M IN m
Pro
pert
Berm (300mm MIN height) STORMWATER TREATMENT DETAILS EARTH BUND CUT OFF DRAIN AGGREGATE OR RECYCLED CONCRETE. ROCK TRENCHED 200 MM INTO GROUND
END OF TOP BLANKET 300mm AND KERB INLET PIT SEDIMENT BARRIER
PROPOSED SUBDIVISION
WIRE
STAPLE AT 150 CRS. NOM SEDIMENT
SEDIMENT FLOCCULATION
200
TRAP FLO
FLOW The job of a flocculent is to effectively break down the dominance of the clay particles that contain a residual negative eleCIRCUITro-magnetic charge and thus allowing individual particles W
50m NOTE: POINTS A AT SAME to be drawn together and settle under gravity.
Geotextile fabric, MAX ELEVATION
53-57 RENE ST
Bidum U34 or similar 1.5m TIMBER STAKES
3.0
m
AT MAX 2.5m CENTRES METHOD OF APPLICATION
MIN
CENTRELINE SECTION AT POINTS "B" Unbound pavement material (gravel) to Grading han
nel
dwa
y SELF-SUPPORTING
GEOTEXTILE SEDIMENT FENCES
Large sediment basins such as the one this site, require that the gypsum is mixed into a slurry with water and then sprayed over the surface of the turbid water in the sediment
SPACING OF CHECK DAMS ALONG CENTRELINE
AND SCOUR PROTECTION BELOW EACH CHECK
B, Table 9 of QT Specification MRS11.05, &c a basin. It is essential that the gypsum is spread evenly over the entire surface for efficient treatment of the turbid water. DAM TO BE SPECIFIED ON SWMP/ESCP
w ro ROCK CHECK DAM
exclude material finer than sieve 2.36mm Kerb Sediment Fence installed across the contour
NOOSAVILLE
e Generally the gypsum should be applied at a rate of about 32 kgm per 100 cubic metres of detained turbid water, as per the adjacent table. The above dosing rate for the site
rn
A Exis
ting
,o
500mm TO 600mm DIRECTION OF
FLOW - uncontoured concentration of flow should be avoided
NOT TO REGULAR SCALE
should be calibrated after the first two storm events to assess the actual flocculent application rate and settling time required for the site.
The final application rate should be sufficiently high to permit adequate sediment sediment flocculation (less than 50 NTU) and basin dewatering within two days (48 hours) from the
ROCK CHECK DAM CONSTRUCTION NOTES
conclusion of each storm event, whilst maintaining other required water quality criteria such as pH (6.5 - 8.5) and dissolved oxygen (>80%).
1. CHECK DAMS CAN BE BUILT WITH VARIOUS MATERIALS, INCLUDING ROCKS, LOGS, SANDBAGS AND STRAW BALES. THE
Runoff from pad directed to sediment trap 600mm MIN ON SOIL, 150mm x 100mm
METHOD OF TESTING THE STORMWATER MAINTENANCE PROGRAM SHOULD ENSURE THEIR INTEGRITY IS RETAINED, ESPECIALLY WHERE CONSTRUCTED WITH STRAW
BALES. IN THE CASE OF BALES, THIS MIGHT REQUIRE THEIR REPLACEMENT EVERY TWO TO FOUR MONTHS.
The stormwater detained in the sediment basin will be tested at a suitable location that will be decided upon at the site. The sample should be taken at a location that has adequate
TRENCH WITH COMPACTED access so no sediment is resuspended while the testing is being conducted. 2. TRENCH THE CHECK DAM 200 MM INTO THE GROUND ACROSS ITS WHOLE WIDTH. WHERE ROCK IS USED, FILL THE
BACKFILL AND ON ROCK, SET The stormwater detained in the sediment basin will be tested with the TPS 90-FLT water quality logger. The TPS 90-FLT unit samples and records the dissolved oxygen, conductivity, TRENCHES TO AT LEAST 100 MM ABOVE THE GROUND SURFACE TO REDUCE THE RISK OF UNDERCUTTING.
B TEMPORARY CONSTRUCTION ENTRY/EXIT SEDIMENT TRAP
Not to Scale
SECTION DETAIL INTO SURFACE CONCRETE pH, turbidity and temperature of the stormwater. For further details and specifications on the TPS 90-FLT please refer to Appendix B.
If the TPS 90-FLT unit is not present a practical field test that approximates the required 50 NTU level is to fill a clear plastic or glass 65mm diameter soft drink bottle with the
3. NORMALLY, THEIR MAXIMUM HEIGHT SHOULD NOT EXCEED 600 MM ABOVE THE GULLY FLOOR. THE CENTRE SHOULD
ACTING AS A SPILLWAY, BEING AT LEAST 150 MM LOWER THAN THE OUTER EDGES.
water and then hold it up to the light. If seeing clearly through the sample is not possible, then the sample is probably above the 50 NTU level.
4. SPACE THE DAMS SO THE TOE OF THE UPSTREAM DAM IS LEVEL WITH THE SPILLWAY OF THE NEXT DOWNSTREAM
CATTLE GRID 3.0m NOM WIDTH DAM.
STAPLE BLANKETS SET 300mm ABOVE GROUND
AT GRID OF
1m CENTRES
CONSTRUCTION SITE 5
MIN m
METHOD OF DEWATERING
NT
NME
B The sediment basin can be dewatered as soon as the water quality criteria met (refer table below). A pump is to be used to decant the basin with a floating inlet to prevent the
NOM
DRAWING TITLE
200
ALIG
settled sediments from being removed from the basin. The pumping must cease prior to the settled sediments being drawn into the intake pipe, it is essential that materials from
10 TY the sediment layer are not discharged in the pumping process. STABILISE STOCKPILE
MIN m PER EL SEDIMENT FENCE CONSTRUCTION NOTES AX.)
SURFACE
PRO HANN ; EARTH BANK 2:1
B 1. CONSTRUCTION SEDIMENT FENCES AS CLOSE AS E (M
FLOW
C Y P SLO
SLO
DWA
EROSION AND SEDIMENT
GEOFABRIC FABRIC, BIDIM A34 & KERB INLET PIT SEDIMENT BARRIER POSSIBLE TO BEING PARALLEL TO THE CONTOURS OF THE FLOW PE
300
STAPLE OUTSIDE EDGES OR SIMILAR ERB ROA SITE, BUT WITH SMALL RETURNS. THE CATCHMENT AREA STORMWATER DISCHARGE QUALITY CRITERIA 2:1 (MA
AT 300mm CRS. 3MmIN K NEW CONSTRUCTION NOTES SHOULD BE SMALL ENOUGH TO LIMIT WATER FLOW IF
X.)
OR 1. FABRICATE A SLEEVE FROM GEOTEXTILE OR WIRE MESH
CONTROLS
CONCENTRATED AT ONE POINT.
G, LONGER THAN THE LENGTH OF THE INLET PIT AND FILL
ACCEPTABLE TSS ACCEPTABLE PH DISSOLVED O2
RUNOFF TO BE DIRECTED TO A SEDIMENT TRAP,
E X ISTIN WITH 25mm TO 50mm GRAVEL.
2. CUT A 150-mm DEEP TRENCH ALONG THE UPSLOPE
LINE OF THE FENCE FOR THE BOTTOM OF THE FABRIC TO
REFER STANDARD DRAWING D-0041. SEDIMENT FENCE
CLEAN/DIRTY DIVERSION DRAINS 2. FORM AN ELLIPTICAL CROSS-SECIRCUITION APPROX. 150mm BE ENTRENCHED.
3. DRIVE TIMBER STAKES INTO GROUND AT 2.5m
50mg/L 6.5 - 8.5 > 80%
TOPSOIL STOCKPILE
HIGH, 400mm WIDE.
TEMPORARY ENTRY/EXIT 3. PLACE THE FILTER AT OPENING LEAVING AT LEAST INTERVALS (MAX) AT THE DOWNSLOPE EDGE OF THE TRENCH.
TOPSOIL STOCKPILE CONSTRUCTION NOTES
100mm BETWEEN KERB INLET AND SLEEVE. MAINTAIN 4. FIX SELF-SUPPORTING GEOTEXTILE TO THE UPSLOPE
DIVERSION DRAIN CONSTRUCTION NOTES OPENING WITH SPACER BLOCKS. SIDE OF THE POSTS ENSURING IT GOES TO THE BASE OF SEDIMENT BASIN FLOCCULENT APPLICATION 1. PLACE STOCKPILES MORE THAN 2 (PREFERABLY 5) METRES FROM EXISTING VEGETATION, CONCENTRATED
4. FORM A SEAL WITH KERB TO PREVENT SEDIMENT THE TRENCH. FIX THE GEOTEXTILE WITH WIRE RECOMMENDED WATER FLOW, ROADS AND HAZARD AREAS.
1. REMOVE ANY ROCKS, CLODS, STICKS OR GRASS FROM THE SURFACE BEFORE LAYING PLASTIC.
TEMPORARY ENTRY/EXIT CONSTRUCTION NOTES BY THE MANUFACTURER. THE USE OF SHADE CLOTH FOR
BYPASS. 2. CONSTRUCTION ON THE CONTOUR AS LOW, FLAT, ELONGATED MOUNDS.
2. ENSURE THAT TOPSOIL IS AT LEAST 75mm DEEP. 5. SANDBAGS FILLED WITH GRAVEL CAN SUBSTITUTE FOR THIS PURPOSE IS NOT SATISFACTORY. AGENT INDICATIVE DOSAGE COMMENTS PRECAUTIONS & CONSTRAINTS MIN. REQD. ON SITE
3. WHERE THERE IS SUFFICIENT AREA, TOPSOIL STOCKPILES SHALL BE LESS THAN 2 METRES IN HEIGHT.
1. STRIP THE TOPSOIL, LEVEL THE SITE AND COMPACT THE SUBGRADE. 5. JOIN SECTIONS OF THE FABRIC AT A SUPPORT POST
3. ENSURE PLASTIC WILL BE CONTINUOUSLY IN CONTACT WITH THE SOIL BY GRADING THE SURFACE 2. COVER THE AREA WITH NEEDLE-PUNCHED GEOTEXTILE. THE MESH OR GEOTEXTILE PROVIDED THEY ARE PLACED 4. WHERE THEY ARE TO BE IN PLACE FOR MORE THAN 10 DAYS, STABILISE FOLLOWING THE APPROVED
CAREFULLY FIRST. SO THAT THEY FIRMLY ABUT EACH OTHER AND WITH A 150mm OVERLAP. GYPSUM 32kg/100cub.m LITTLE PH CHANGE, SLIGHT INCREASE IN NEEDS TO BE SPREAD EVENLY ACROSS POND. 260 kgm ESCP OR SWMP TO REDUCE THE C-FACIRCUITOR TO LESS THAN 0.10.
3. CONSTRUCTION A 200mm THICK PAD OVER THE GEOTEXTILE USING ROAD BASE OR 30mm.
SCALES
4. LAY FABRIC IN "SHINGLE FASHION", WITH THE END OF EACH UPSTREAM ROLL OVERLAPPING THOSE 6. BACKFILL THE TRENCH OVER THE BASE OF THE FABRIC SALINITY CAN CAUSE SCUM DEPOSITS IN EQUIPMENT. 5. CONSTRUCTION EARTH BANKS (STANDARD DRAWING 5-5) ON THE UPSLOPE SIDE TO DIVERT WATER AROUND
4. ENSURE THE STRUCTURE IS AT LEAST 15m LONG OR TO BUILDING ALIGNMENT AND AT SEDIMENT LADEN WATERS CANNOT PASS BETWEEN. AND COMPACT IT THOROUGHLY OVER THE GEOTEXTILE.
DOWNSTREAM. ENSURE EACH ROLL IS ANCHORED PROPERLY AT ITS UPSLOPE END. LEAST 3m WIDE. STOCKPILES AND SEDIMENT FENCES (STANDARD DRAWING 6-8) 1 TO 2 METRES DOWNSLOPE.
5. ENSURE FULL WIDTH OF FLOW CHANNEL IS COVERED BY THE PLASTIC. NOTE: NOTIFY ENGINEER TO CONFIRM DOSAGES & APPLICATION PRIOR TO USE.
5. WHERE SEDIMENT FENCE JOINS ONTO THE STABILISED ACCESS, CONSTRUCTION A HUMP OR
GRATE IN THE STABILISED ACCESS TO DIVERT WATER TO THE SEDIMENT FENCE.
SURVEY DATUM
.
ASSOCIATED CONSULTANTS
REVISION LIST
A ORIGINAL ISSUE 11/02/22
Computer File
031159CP.DWG
DRAWING NUMBER SHEET REV.
03-1159-C3 3 A
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