Council archive · source document
Attachment B - Engineering Technical Note · 132008.1128.04
Original PDF page 1, section 1. The text section number identifies this passage in the reader.
SUNRISE BEACH RETIREMENT AND AGED CARE DEVELOPMENT
Date: Friday, 17 July 2020
To: Noosa Council
From: Mr Shaun Pilcher - Calibre Professional Services
SUBJECT: 132008.1128.02 - TECHNICAL MEMORANDUM - ENGINEERING
INTRODUCTION
This technical memorandum has been prepared to support a Minor Change Application for the existing Development Approval
for the Sunrise Beach Residential Aged Care (RAC) facility. The development is located on Grasstree Court, Sunrise Beach and
includes a mixture of aged care, retirement independent living units and retirement apartments associated with allied health.
The scope of this technical memo relates only to the aged care facility located at Lot 6 on RP901384 on the northern side of
Grasstree Court.
The engineering elements effected as a result of the proposed change to the Aged Care Facility are discussed herein. The
purpose of this technical memo is to demonstrate that the proposed design does not result in any detrimental impacts from an
Engineering perspective.
SCOPE OF DESIGN CHANGE
The proposed change results in an increase of aged care “beds” within the facility, with no change to the facility’s Gross Floor
Area (GFA). This is an important distinction as individual planning and engineering assumptions are based off GFA and number
of beds.
A summary of the change is listed in Table 1 below:
Table 1: Scope of design change
Type Current Approval Proposed Design Net Change
GFA (m2) 6,565 6,440 -125m2
Number of “beds” 96 102 +6
CLEARING AND BULK EARTHWORKS
Council has issued an Operational Works approval for Clearing and Bulk Earthworks (OPW18-0341) for the development site
under the current approved layout. Key elements of this Operational works approval include:
1. Retention of 11 Glossy Black Cockatoo feed trees along the western, north eastern and eastern boundaries of the site;
2. Clearing of the balance of the site and spreading of mulch across the site for Erosion and sediment control;
3. Excavation of basins along the northern boundary of the site;
4. Building design which includes a combination of cut/fill areas, integrated retaining walls and cantilever slabs;
5. Minimisation of retaining walls as far as possible; and
6. Providing a building finished floor level of RL30.60m AHD
The revised building design and development proposal achieves consistency with the above key elements. Refer to drawing
5001-106(B) attached.
A subsequent change application for the Operational works approval (OPW08-0341) will be required to align with the proposed
redesign.
File Ref: 18-001942 Page 1 of 3
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Section 2
SUNRISE BEACH RETIREMENT AND AGED CARE DEVELOPMENT
CONTINUED
TRAFFIC AND MOVEMENT NETWORK
A traffic technical memo was prepared to support the previous minor change application in 2018. The technical memo assessed
performance of the Ben Lexcen Drive/Lipton St/Grasstree Court intersection to the north of the site. The assessment returned
level of Service A under both the AM and PM peak hour scenarios.
The analysis was based on the current approval traffic generation as follows:
Table 2: Traffic Generation Comparison
Traffic
Current Approval Proposed Design Net Change
Generation
0.4 trips per 91 trips per 93 trips per 2 trips per
Peak Hour
bed/dwelling 226 hour 232 hour hour
2.5%
Beds/Dwellings Beds/Dwellings
2.1 per 475 trips per 487 trips per 12 trips per
Daily Traffic
bed/dwelling day day day
The above analysis was based on the whole of the development site, which includes both the aged care facility and the
retirement living site. The aged care facility contributed 96 of the 226 beds/dwellings, which is now proposed to increase to 102
(from 96).
The net increase of 2 trips per hour in the peak (2.5% additional development traffic) will have negligible effect on the
performance of the Ben Lexcen Drive/Lipton Street/Grasstree Court roundabout.
Swept path assessment
Drawing 5000-SK-004(A) attached demonstrates the swept path movements for vehicles entering and leaving the site. The key
movement is the waste collection vehicle using the service area at the south eastern corner of the site.
A waste management plan for the site has been prepared and approved under OPW19/0047 which nominated a rear lift waste
collection vehicle. This vehicle has been used in preparing the swept path plans
An analysis of vehicle movements into the carpark area is also shown on the drawing.
STORMWATER MANAGEMENT
The proposed redesign does not fundamentally affect the proposed stormwater management for the site.
Importantly, the stormwater network and treatment systems have been approved under OPW19-0020. This approval included a
50m2 bio basin and 45m2 infiltration basin located along the northern boundary of the site. These basins have been retained in
the proposed design, albeit with minor reshaping of the bio basin.
The stormwater network is shown on drawing 5002-106(B) and 5002-400(B). A change application for OPW19-0200 will be
required in the future to reflect the changes to the stormwater basins.
WATER AND SEWERAGE
A Water and Wastewater Network Investigation (18-001942-WER01(B)) was prepared by Calibre for the development in
December 2018 which identified a requirement for an additional 150mm watermain in Grasstree Court.
The proposed design results in a reduction in GFA, but a marginal increase in number beds. A comparison of the approved
design vs the proposed design is provided in Table 3 below.
Table 3: Water and Sewerage EP comparison
Current Approval Proposed Design
Total EP+10% Net
Land Use EP/Dwelling Quantity Total EP Quality Total EP
Contingency Change EP
122
Attached Dwellings 1.8 122 dwelling 219.6 242 219.6 0
Dwellings
3.56EP/100m2
Aged Care Facility 6,565m2 233.7 257 6,440m2 229.3 -4.4
GFA
3.13EP/100m2
Community Facility 2,985m2 93.4 103 2,985m2 93.4 0
GFA
Total 546.7 602 542.3 -4.4EP
Page 2 of 3
Section 3
SUNRISE BEACH RETIREMENT AND AGED CARE DEVELOPMENT
CONTINUED
Importantly, the original network analysis was carried out with an additional 10% contingency. The total EP from the
development was modelled off 602EP as nominated in Table 3. The proposed design reduces the EP allowance to 542.3 EP.
As such the proposed design falls within the current approved network model assumptions, resulting in no net impact on the
network.
Noting that the proposed design results in a reduction in GFA, but an increase in the number of beds within the facility, a
sensitivity check has been carried out on the EP allowance based on the increase in number of beds (from 96 to beds to 102
beds). This assessment has is provided in Table 4 below:
Table 4: EP comparison based on number of beds
Approved Design Proposed Design
Total EP + 10%
Total EP Total EP Net Difference EP
Contingency
Aged Care Facility 233.7 257 248.3 8.7
The total EP under the proposed design has been calculated by apportioning the original EPs up (96 to 102). The total EP under
this sensitive check is 248.3EP, which falls within the 257EP allowed for form this site in the original network model.
As such the proposed design results in no net impact on the water and sewerage network modelled in the Water and
Wastewater Network Investigation (18-001942-WER01(B)).
CONCLUSION:
This technical memorandum has been prepared to support the proposed Minor Change application for the Sunrise Beach RAC
development site. This memorandum provides information in relation to the engineering aspects of the proposed development.
Based on the above we note that the changes proposed are minor in nature and do not fundamentally effect the engineering
elements of the development, both internally and externally.
If you have any questions, please do not hesitate to contact the undersigned.
Yours sincerely
Calibre Professional Services Pty Ltd
Shaun Pilcher
Principal Engineer - Urban Development
ATTACHMENTS
1. Engineering Drawings
Page 3 of 3
Section 4
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RP890947
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PROPOSED ROAD CENTRELINE
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PROPOSED GROUTED ROCK RETAINING WALL
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EXISTING SEWERMAIN
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RAC SITE 6
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RP901384 EXISTING STORMWATER
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FFL 30.600
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EXISTING TREE TO BE RETAINED, PROVIDE
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AN OFFSET OF 12x TRUNK DIAMETER FOR
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28.32 27.64 PROTECTION BUFFER, REFER ECOLOGIST
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REPORT FOR FURTHER DETAILS
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REFER 18-001942-108 FOR RETAINING WALL SETOUT AND DETAILS
UGUG
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29.00 28.37 Section 5
27.66
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ANY AREA DISTURBED OUTSIDE OF THE WORKS AREA SHOWN SHALL
UGUG
BE REHABILITATED TO A MINIMUM OF THE PRE-CONSTRUCTION
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CONDITIONS, AT THE CONTRACTORS EXPENSE.
W UGT
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UGUG
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29.50 28.82 28.35 EARTHWORKS NOTES
C O U
RM
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UGT
1. THE CONTRACTOR SHALL VERIFY THE LOCATIONS OF ALL EXISTING
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SERVICES WITH THE RELEVANT AUTHORITIES PRIOR TO THE
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29.86 29.19 28.50 COMMENCEMENT OF CONSTRUCTION.
RM
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2. THE CONTRACTOR SHALL REMOVE ALL STRUCTURES, DEBRIS AND
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31.31
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FENCES FROM THE SITE TO THE SATISFACTION OF THE
32.10 32.10 31.97 31.68 31.64 31.55 31.13 30.85 30.10 29.46 28.71 SUPERINTENDENT.
RM
PLAN
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SCALE 1:250 ON A1 3. EXISTING SURFACE IS TO BE CLEAR OF VEGETATION MATTER PRIOR TO
S S S S S S S
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THE START OF FILLING.
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|. .|. 4. FILL IS TO BE OF GOOD QUALITY AND FREE OF UNSUITABLE MATERIAL.
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.. THE DRAWINGS, THE ACTUAL LIMITS SHALL BE DETERMINED ON SITE
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BY THE SUPERINTENDENT DURING CONSTRUCTION. SIMILARLY, THE
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FINISHED SURFACE LEVELS MAY BE ADJUSTED BY THE WRITTEN
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DIRECTION OF THE SUPERINTENDENT DURING CONSTRUCTION AFTER
AMENDED DRAWINGS HAVE BEEN APPROVED BY COUNCIL.
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6. ALL EXCAVATION AND FILLING SHALL BE CONSTRUCTED TO THE
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.|. REQUIREMENTS OF AS3798-2007 AND IN ACCORDANCE WITH THE
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.|. CURRENT COUNCIL SPECIFICATIONS AND STANDARD DRAWINGS.
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. |. . 7. LEVEL 1 CERTIFICATION IS REQUIRED ON ALL LOTS IN ACCORDANCE
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1:3
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PRELIMINARY VOLUMES (NO COMPACTION)
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8. ALL DRAINAGE STRUCTURES ARE BE PRESERVED FROM THE EFFECTS
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FILL = 1,962m³
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BALANCE = 403m³
INSET (VOLUMES ARE TO FINISHED SURFACE LEVELS AND DOES NOT INCLUDE BOXING)
9. ALL DIMENSIONS ARE IN METRES UNLESS NOTED OTHERWISE.
SCALE 1:200 ON A1
FILE: 5001-106-107.dwg DATE: 29-11-2018 USER: CAMERON RAMM
XREFS: X-18-001942-SURVEY, X-18-001942-TITLE, X-18-001942-5001-BASE, X-18-001942-5001-CUT_FILL, X-18-001942-5002-CONTS
DESIGN DRAWN CHECK APPROVED DATE STATUS SCALE CLIENT PROJECT DRAWING TITLE
FIRST AMENDMENT DETAILS Calibre Professional Services (QLD) Pty Ltd
ISSUE CB CB - - 26.10.18
FOR APPROVAL Level 3, 16 Innovation Parkway BLUE CARE SUNRISE BEACH EARTHWORKS
A CB CB SP SP 02.08.19 FIRE TRAIL AMENDED 0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 Birtinya QLD Australia 4575
A
M B CR NV SP SP 08.04.20 BASIN AMENDMENTS NOT FOR CONSTRUCTION
SCALE 1:200 (A1) SCALE 1:400 (A3)
Telephone 07 5314 2520
Facsimile 07 5314 2522
RETIREMENT LIVING & DETAIL PLAN
E
C
N
D
M
D
APPROVED
0 2.5 5 7.5 10 12.5 15 17.5 20 AGED CARE
E
BY: DISCLAIMER
PROJECT No. DRAWING No. REVISION
E
N SCALE 1:250 (A1) SCALE 1:500 (A3) ALL DIMENSIONS TO BE CHECKED ON SITE BY CONTRACTOR
F
T
S
G SIGN: DATE:
C calibregroup.com PRIOR TO CONSTRUCTION. USE WRITTEN DIMENSIONS ONLY,
DO NOT SCALE.
18-001942 5001-106 B
Section 6
4.00
FIRE TRAIL CARPARKING ENTRANCE SERVICE YARD
RP BDY
RP BDY
3.29
RETAINIED GBC TREES
FUTURE FOOTPATH RETAINING WALL DESIGN SURFACE EXISTING SURFACE RETAINING WALL
SECTION A
SCALE (A1):1:200 106
SCALE (A3):1:400
4.00 OPEN
FIRE TRAIL RAC BUILDING PAD SPACE
RP BDY
RP BDY
FUTURE RETAINING WALL
FOOTPATH
RAC FFL 30.6
3.20
RETAINING WALL CANTILEVERED SLAB DESIGN SURFACE EXISTING SURFACE RETAINING WALL
SECTION B
SCALE (A1):1:200 106
SCALE (A3):1:400
GRASSTREE COURT ENTRANCE RAC BUILDING PAD OPEN SPACE RAC BUILDING PAD OPEN SPACE
RP BDY
RP BDY
RAC FFL 30.6 RAC FFL 30.6
RETAINING WALL DESIGN SURFACE EXISTING SURFACE CANTILEVERED SLAB RETAINIED GBC TREES
SECTION C
SCALE (A1):1:200 106
SCALE (A3):1:400
RP BDY
INFILTRATION BASIN
RP BDY
FUTURE BIO
RETAINING WALL
RP BDY
BASIN
RAC FFL 30.60
RAC FFL 30.60
TW=31.215
BW=30.471 RL 26.20
RL 27.40
EXISTING SURFACE PROPOSED SURFACE CANTILEVERED PAD RETAINING WALL
EXISTING SURFACE DESIGN SURFACE CANTILEVERED SLAB RETAINING WALL
SECTION D
SCALE (A1):1:200 106
SCALE (A3):1:400
SECTION E SECTION F
SCALE (A1):1:200 106 SCALE (A1):1:200 106
SCALE (A3):1:400 SCALE (A3):1:400
TREE TO BE RETAINED
RETAINING WALL
RP BDY
DESIGN SURFACE EXISTING SURFACE
TW=31.986
BW=30.501
SECTION G REFER 18-001942-108 FOR RETAINING
SCALE (A1):1:200 106 WALL SETOUT AND DETAILS
SCALE (A3):1:400
FILE: 5001-106-107.dwg DATE: 29-11-2018 USER: CAMERON RAMM
XREFS: X-18-001942-SURVEY, X-18-001942-TITLE, X-18-001942-5001-BASE, X-18-001942-5001-CUT_FILL
DESIGN DRAWN CHECK APPROVED DATE STATUS SCALE CLIENT PROJECT DRAWING TITLE
FIRST AMENDMENT DETAILS Calibre Professional Services (QLD) Pty Ltd
ISSUE CB CB - - 26.10.18
FOR APPROVAL Level 3, 16 Innovation Parkway BLUE CARE SUNRISE BEACH EARTHWORKS
A CB CB SP SP 02.08.19 FIRE TRAIL AMENDED Birtinya QLD Australia 4575
A
M B CR NV SP SP 08.04.20 BASIN AMENDMENTS NOT FOR CONSTRUCTION
0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0
Telephone 07 5314 2520
Facsimile 07 5314 2522
RETIREMENT LIVING & SECTIONS
E
C
N
D
M
D
APPROVED
SCALE 1:200 (A1) SCALE 1:400 (A3) AGED CARE
E
BY: DISCLAIMER
PROJECT No. DRAWING No. REVISION
E
N ALL DIMENSIONS TO BE CHECKED ON SITE BY CONTRACTOR
F
T
S
G SIGN: DATE:
C calibregroup.com PRIOR TO CONSTRUCTION. USE WRITTEN DIMENSIONS ONLY,
DO NOT SCALE.
18-001942 5001-107 B
Section 7
GROUTED ROCK TO OUTLET 16.0m LONG CONCRETE VEGETATED BERM RL26.90
AND WHERE SLOPE IS GREATER BLOCK LEVEL SPREADER. REFER INSET
THAN 1 IN 3 (TYP). REFER REFER DETAIL
GROUTED ROCK DETAILS
.90
90
.90
RL
.50 6.
26
26
26 L 2
27
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27
L2
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6.5
RL
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0
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1 IN 3
REINFORCED TURF OVER .
RL
2.508
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2.0 |.
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(1 IN 3 MAX)
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27
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3
GRAVEL ALL-WEATHER .|.
1 IN
RL RL
ACCESS TRACK TO BASIN .|. .|. . 0.3m EACH WAY
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1.500
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OF SETOUT .| RL 27.20
BATTER IN FIRE TRAIL . .|.
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3.000
1 in 4 TYP (1 IN 3 MAX) RL 27.30 .|. .|. .|. .|. .|. .|.
0.60m
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00
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|. .
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|. . ACCORDANCE WITH IPWEA
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TO CLEAR TPZ
IES
| ..
ER
|.
|. . STD DRG RS-140
VAR
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.|.
|.
T
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.
BAT
.|.
TER
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FUTURE RETAINING WALL
.|.
BAT
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|. .
(BY OTHERS)
.|.
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|. .
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.
.|.
.|.
1.0m WIDE SWALE WITH 1 IN 3
.|.
.|.
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.|.
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BATTERS AT 0.5% MIN GRADE
.|.
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PLAN
1:100 @ A1 | 1:200 @ A3
CONCRETE BLOCK LEVEL BATTER 1 in 4 TYP (1 IN 3 MAX) VEGETATED BERM RL26.90
401
401
401
SPREADER RL26.90
C
D
B
9 17
10 18
8
E .|.16.|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|.
.|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|.
401
7 11 12 15 19
2 |.
|. .
A
6 13 .|. . 20 14
40
1 . .|.
|. . |. .| LEGEND
|. .|. .
|. .
3
.|. .|. . PROPOSED WORKS
23 .|. DESIGN CONTOURS
.|. . .|.
.|.
. . .|. .| PROPOSED STORMWATER
|. .
| ..
24 25
|. . |. .| .|. .|. .|. .|. PROPOSED TOP OF BANK
|. . .|. . .| . .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|.
|. . |. .|. .|.
|. .|. . . .|. PROPOSED TOE OF BANK
4 .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. .|. |. . |. .| PROPOSED RETAINING WALL (BY The text continues on section 8.
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