Original source · versioned page text
Appendix C - Ecological Assesment
Attached to the e-mail Response to Information Request OPW21/0354 - 8 Robin Place, Lake Macdonald.
Original PDF page 1, section 1. The text section number identifies this passage in the reader.
PROJECT: J000988 Friday, 26 November 2021 Tony Rossiter Via Email: [email protected] Dear Tony, RE: Proposed Dam impact to Native Vegetation – 8 Robin Place Lake MacDonald QLD North Coast Environmental Services undertook a site investigation on Monday 22nd November 2021 to assess the ecological values present within and adjoining the proposed dam footprint at 8 Robin Place Lake MacDonald (Lot 13 SP315578). Lot 13 was recently created as part of a rural residential subdivision (Council Ref: OPW20/0051) and vegetation at the rear of the lot was subsequently registered under conservation covenant. It is understood you are the new owner of Lot 13 and you wish to construct a dam in the north of the lot within approximately 20m of the covenant edge. The plan of the dam presented to us for assessment purposes is presented as Attachment 1. No material impact is expected to the covenant vegetation given its separation of 20m from the nominated position of the dam. It is noted that you informed us that the dam linework in Attachment 1 represents the centre of the top of bank of the dam. Further, the geotechnical assessment by Tectonic has recommended the batters of the dam be constructed at 1:3 grade on the downslope side of the dam and 1:2 on the high side. We have therefore assessed that the required downslope batter of the dam would extend approximately 6m from the delineated top of bank in Attachment 1 on the assumption that the top of bank RL would be approximately 2m above ground RL 9as per your advice on site). Consequently, approximately 14m separation is anticipated post dam construction between the toe of the dam batter and the adjacent covenant boundary. Whilst the covenant vegetation will not be impacted, a small copse of native trees are present between the nominated dam location and the covenant boundary and are captured under the Noosa Plan as being within a native vegetation area. These trees were not captured in the covenant under the subdivision due to their non-remnant status and given they were scattered amongst a slash pine infestation which has since been cleared to satisfy the DA conditions. Plate 1 identifies the conditions within and abutting the proposed dam and the extent of trees anticipated to be directly impacted. The trees comprise regrowth trees over a grassy understorey dominated by Imperata cylindrica along with some regrowth saplings of mixed native species. PO Box 9566 Pacific Paradise QLD 4564 ABN 60 625 108 625 1 | Page
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Section 2
PROJECT: J000988
Surveyed edge of
vegetation (approx.)
Plate 1 – Affected Trees (red line denotes approx. toe of dam batter)
Based on a 6m batter slope length on the downslope side of the dam as depicted in Plate 1, the
following trees are likely to be required to be removed due to either direct clearing needs or the
likelihood of becoming non- viable as a result of filling over their root zones and about their trunks:
• 2 x Eucalyptus grandis (approx. 16m high/400-450mm dbh);
• 1 x Corymbia intermedia (6m/100mm);
• 3 x Acacia melanoxylon (4m, 6m and 8m/100mm, 100mm and 300mm)
• 1 x Lophostemon confertus (8m/100mm)
Extension of the batter any further than 6m from the pegged alignment on site would impact the
surveyed edge of vegetation shown in Appendix 1 and Plate 1 and which is characterised by a
population of Commersonia bartramia to 10-14m height. It is therefore recommended the final
position of the dam be designed to ensure retention of the vegetation edge characterised by the
Commersonia’s.
The stand of impacted trees comprise least concern species which are common in the local area.
The trees all exhibit regrowth structural characteristics and were not observed to be host to any
hollows or nests at the time of inspection. Whilst the trees inherently influence the microclimate of
the nearby covenant vegetation it is considered their removal will not alter the viability of the covenant
area to be able to continue support the in-situ local flora and fauna, particularly given the extent of
mixed open forest and rainforest regrowth canopy trees that would be retained between the dam
PO Box 9566 Pacific Paradise QLD 4564
ABN 60 625 108 625
2 | Page
Section 3
PROJECT: J000988
and the covenant vegetation that will offer increasingly shaded conditions to the covenant edge over
time.
The impact of the tree clearing can be countered via the provision of a compensatory biodiversity
offset. In this instance it could be appropriate to provide a direct revegetation offset within the
denuded area in the north-west corner of the lot adjacent to the covenant boundary (refer Plate 2).
Covenant boundary fence
Potential revegetation area
Plate 12– Suitable Offset location
Determination of an appropriate scale of revegetation is matter to be negotiated with Council but
should at a minimum comprise a 1:1 clearing to offset ratio with trees planted at appropriate densities
and maintained for a period of time until considered successfully established.
Should you have any queries regarding this matter please do not hesitate to contact me.
Sincere regards,
Joshua Lee - Director
B. Sc. Australian Environmental Studies (Ecology, Land & Water, Pollution & Health)
mEIANZ, mFPAA, mESA
Ph: 07) 5450 5652 | Email: [email protected]
PO Box 9566 Pacific Paradise QLD 4564
ABN 60 625 108 625
3 | Page
Section 4
PROJECT: J000988
Attachment 1 – Plan of Proposed Dam
PO Box 9566 Pacific Paradise QLD 4564
ABN 60 625 108 625
4 | Page
Section 5
MAGNET SOKKIA
SOFTWARE TOTALSTATION
P.A. & F.A. HASS
0 1 2 3 4 5 10 20 trading as
SCALE 1:200
HASS SURVEY
Philip Hass, Registered Surveying Associate
241 Gumboil Road
114.04gl Lake MacDonald,
COOROY, 4563.
114.12
Phone 5442 6065
Mobile 0421 039204
EMAIL
114 . 50
113.77 113.95
114.33 114.81 [email protected]
SHEET No TOTAL No of SHEETS
114.11
1 15 .
1 1
00
113.44 115.31
NOTE: TITLE
114.14
This is not an Identification Survey.
CONTOUR & DETAIL
115 . 5
114.62 Overall dimensions have been copied from the
8 "
.88 50 115.94 relevant survey plans.
SURVEY
44 °41'
0
116.05
A title search has not been carried out to check for the
6
27 113.03 113.25 113.69
Proposed Area for Dam 115.84
existence of easements, covenants, or to verify if the
property description shown is current.
via
Adjoining descriptions may not be shown. PROPERTY DESCRIPTION
SP
NO
116
Lot 13 on SP315578
31
116.76
. 50
55
112.53 113.92 8 Robin Place
RT
115.27
78
112.99
114.36 Lake MacDonald
1 17 .
H
113.34
117.22
00
112.17
113.26 116.67
HEIGHT DATUM SCALE
117
datum AHD 1:200
. 50
112 . 00
113.35 115.08 115.61 117.91 origin Screw in Kerb (@ A1Size)
112.50
113.71 114.23 117.15 From AXIS SURVEY detail on SURVEYED
118.43
111.79gl 113.12 26.7.2021 provided by client. PAH
34
3°1
8'2
rl 120.647 DRAWN
PAH
116.49 10 0" CONTOUR INTERVAL
117.89 2.5 118.92 DATE
48 0.25m
112.90 118.26 27.10.2021
115.60 FIELD BOOK CIVILCAD FILE AUTOCAD FILE
116.98
112.00
111.55 114.20 117.28
118.79
magnet H21054 H21054A
112.56 114.88
117.61
119.10 LOCAL AUTHORITY
118.21
118.04
118.72
NOOSA COUNCIL
113.40 116.32
117.28
119.08 CLIENT
113.41 119.49
116.92 118.17 118.68 Tony Rossiter
111.49
114.03 115.47 119.75
112.35
113.76
111.12 DRAWING
117.85
H2105A
stake
stake
119.15 119.42
.8 5"
118.27 119.73
36 49'5
112.64 118.80
75
114.80 117.19
9°
113.23 119.55
25
111.91
111.04 116.70
115.97 118.84 119.28
111.50 114.25
stake
dpy 117.59 119.71
9001 118.00
119.63
113.70 115.43 rough broken ground TBM
119.38
dpy
9000 Screw in Kerb
110.66 116.53
stake
111.91
113.12 116.87 118.56
118.98
119.30
119.47
119.55 119.79
RL 120.647
117.92
Wattle 117.36 119.57
110 . 50
112.49 119.39
111.03 115.40 116.90 117.15 119.31
Bloodwood 114.74
Gum 115.78 119.80
111.92
76°
115 . 00
112.62 116.66
114 . 00
118.18 07
111.82 119.25
2.6 '50"
1 12 .
114.42 Section 6
119.36 .88
34 120.14 12 0
116 . 00
110.27 ELP
114.30 114.64 117.31
1 20 . 50
119.36 74
0. .64
00
119.69
117 . 50
113.10 119.91
6
8
113.42 12 120
.4
.9
stock pile 119.16
8
8
118
11
.1
119.87 120.65
9
111.73 116.55 120.75
0
114.71
118.8
11
119.32
Gum 119.42
8
119.49
6
112.26
118.
112.51 114.29 118.95 119.21 119.30 119.84 120.56
7
"
60°0 .845
.6 119.28
0'30
118 . 00
6 119.44 120.42
Proposed Area for Dam 115.10 11 20.5
3
116.06 117.21 119.23 .42 1
114.68 115.62 116.39 120
5
110.60 73
113.85 114.33 8. 119.25
111.35 117 117.83 11 119.54
. 12
119.82
114.32 118.19 119.03 119.21 12
119.06 119.23 119.36 119.66 0.
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112.90 120
111.66 120.01
118.67 119.03 9 . 93 0
113.34 116.94 11 11 .1 120.03
7 .6 0 20 2
11 119.11 1 0 .1
115.43
7 . 22 12
bitumen driveway 119.80
110.16 114.82 118.80 119.19 11
9 . 65
118.36 11
115.88 119 9.4
119.64
.24 8 119.80
111.00 119.06 119.13
116.49 119.69 8 119.54
111.53 113.89 119.7 119.58
119.40
stock pile 2
116.88 119.06
119.11
119.09 119.6
119.02
119.41
stake
112.72 114.27 119.13 119.45
stake
118.67 119.07 119.06
118.88 . 92 119.45
112.09 118.13 118
113.25
118.88
118.91
119.01
11
11
119.11
42°55'30"
8
8.
119.21
19.322
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96
119.06
4
111.08 118.81
116.24
222°47'51"
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115.48 115.91 118.23
34.407
111.41 114.98 118.03
0
7
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118.72
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118.26 118.91
7
7
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110.23 116.70 117.95 .7
0
8
8
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9.07 Section 7
11
.0
118.88 118.98
9
113.64 top of bank 11 118.98
9
11
11
116.89
112.42 118.61 118.81
110.55 117.25 118.60
111.89 118.71
stake
116.30 118.85 118.68
118.43
stake
113.08
1
118.73
8
118.06
8
4
115.07
.6
.5
118.33
.5
.6
117.50
8
8
118.55
8
8
118.32
11
11
116.66 117.15
11
115.55
11
botto 118.53
116.01 m of
bank
110.79 115.83 stock pile 118.59
E
118.51 118.48 118.43
110.15 114.05 115.77 118.48
117.21
C
111.23 112.16 113.44 116.66
118.57 118.54
116.29 118.26
110.07 118.36
115.14 116.51
A
111.81 117.70 117.98 118.38
115.78
118.15
116.07
stake
116.83 118.43
L
118.51
stake
112.92 118.41 118.35
118.33 118.62 118.61
'10"
115.67 117.34
115.56 118.57
11.161
O BI N P
110.74 116.44
30°16
118.35
116.74 118.35 118.32
117.29 118.24
115.25
111 . 50
114 . 50
115 . 00
17 1
113.48
.
110.43 111.11 112.16
00
111.62 112.79 114.02 117.53 118.09 118.56 118.58 118.56 118.52 118.33 118.25
110.15 118.33 118.41
115.31
115.68 146.031 116.86
312°42'25" 117.03
R
[OCR of page images]
{ MAGNET SOKKIA
312°42'25"
SOFTWARE TOTALSTATION
P.A. & F.A. HASS
012345 10 20 trading as
Philip Hass, Registered Surveying Associate
241 Gumboil Road
UNDERGROUND SERVICES DISCLAIMER Lake MacDonald,
B14 04a Underground services have heen located only COOROY, 4563.
[. where obvious at time of survey, Some ,
franz , services that were not obvious and are not Phone 5442 6065
/ shown on the plan may still be present, It is :
the responsibility of any person excavating 7 Mobile 0421 039204
building, on or adjacent to the site to EMAIL
/ = confirm with the relevant authority the
413.77 x location of services. [email protected]
apes 211433 oy Ne The author of this plan accepts no P @ 9p
/ 9 responsibility for damage to services shown or SHEET No TOTAL No of SHEETS
| / not shown on this plan.
att / = { {
/ a
S
S 115.31 + TITLE
: CONTOUR & DETAIL
| x
/ Lo
| g wise SURVEY
* © +116.05
178-68 115.84
PROPERTY DESCRIPTION
| | > Lot 13 on SP315578
| > 116.76 in Pl
| : +
fess “usar g 8 Robin Place
ess Lake MacDonald
“413.34 / =
/ / 117.22
i / s
112.17 Jraos / (116.67 ( ~ HEIGHT DATUM SCALE
| v AHD 1:200
| . A
115.08 115.61 / g 117.91 Screw in Kerb (oars)
112.50 / poe” / wvad / ; Y From AXIS SURVEY detailon | SURVEYED
, : (113.71 | / wee | 118.43 26.7.2021 provided by client. PAH
P11.7991 113.12 / | / Ps, 120.647 DRAWN PAH
| 78
/ | 16.49 | 117 "05 SO» 118.92 7
/ | ; | 2. va COB 218: 0.25m 27.10.2021
| 115.60, / / an | FIELD BOOK CIVILCAD FILE [AUTOCAD FILE
| .
: / magnet }H21054 =| H21054A
| thee 5 / LOCAL AUTHORITY
| * 112.56 } 114.88 /
| / / NOOSA COUNCIL
| / /
113.40) / 116.32 / CLIENT
‘ 119.49 ;
341 / + Tony Rossiter
/
5.47 | 119.75
. | DRAWING
| H2105A
/ 119.42
| wr 119.73
114.80 / | | “tas \ ]
| | 116.70 119.28 \
/ 2 f'597 | * \ 119.71
| | | 119.63,
1514s | | rough broken grdund TBM
* | | | 119.38 :
| 47 © 999 Screw in Kerb
| 2
119.66 | [11688 118.56 the.os 119.30 s «119.55 119.79 RL 120.647
| | * 11947
| a 119.57
| 119.39 *
| 119.31 +
So 111.03 M474 1s78 | > 119.80
S + 118. 63
Voa Op,
So 119.25 Son 8
| J 119.36 2.634 0 4208 .
110.27 | | 3 119.36 i969 * jr x ws
c . A
‘ | S 119.87 & / / a /..575 t 120.65
& | | 114.71 ° 119.32 // S712
x» | | . | | + 119.49 /
| | | 119.21 _, 119.30 ) oS 119.84 / 120.56
\ | | | * 119.28 i944 ¥S ) 3 120.4% +
\ 115.10 | 119.23 ~ 2S / / oe 4
£ | Proposed Area for Dam nasa . | 118.62 118.06 + os] / / fe
|, 110.60 | | . | / /
| “111.88 | 19.8 /
} | 119.06 [oo 0,
| # = 120.01
| 111.66 ‘ Bo v _+120.03
S Ne
\ wa 5,43 bitumen driveway 119.80
82 | | |
110.16 / \ tt | siseb 119.80
| \ | 119.06 11868 3
4111.00 \ | | * 119.40 + ot 119.54 19.58
| \ 40 + a +
| \ 111.53 | \ 419.82 LH —_
| | | ne
| | 118.67 + 118.88 4119.45
| | 119.11
| | | 119.21
| | | _
; | 115.91 118.23 | -
: | 441.08 15.48 + +
BS | | + ta 114.98 4 q 1118.28 | _- 118.91
& = 110.23 \ } \ \ \ \ | \ 118.88 1898
a \ | | | \ 113.64 | |
a | | \ * |
aN | | | | \ \ \ 48-71 118.60
| \ .
| * 110.55 | 111.89 \ \ \ | ta 118.85 —
\ | + \ | | | 418: +
\ | | | 113.08 | \ | | 11.07 118.73 118.83
| \ . \ \ | | * 115.55 118.53
| | \ \ .
J 110.79 | | | \ | | 115.83 Lu
Po 110.15 | | | \ \ 114.05 a
| 111.23 | 112.16 \ 2119.44 | | \ 118.26 118.57
| | | * \ | | | \ +
110.07 | | \ | | 115.14 1117.98
| | \ {tet \ | | | * 115.78 118.15 <
| | | \ | | | | 116.07 oo 118.43 9 1181 118.41
| | \ t12l92 | | | / 118.33 * 11902 ([Beer + + 2118.35
\ | \ | wy | | | 115 + 115.67 | * 118.57 +
\ | | | | 116/44 118.35 .
\ 110.74 | | | | | / + (11674 : 118.32
\ | | | | 115.25 /
\ | = \ | = = z
y \ = | \ | | a / x =
[ \ \ a | \ * fsa in 2 { Vv 118.56 118.58 118.56 118.52 118.33 118.25
10.18 10.43 \ Mt S 111.62 L216 112.79 | |, 114.02 ° 3S 115.31 | 118.68 146.03) 116.80> (1841 oo. + + + + qa
. + — + + \ . Us +
117.03 oO