20120503 tree survey report

TREE SURVEY REPORT

FOR

The Construction of Football Pitch at Sik Kong Tsuen, Ha Tsuen, Yuen Long

PREPARED BY TEAM 73 HK LIMITED 03 MAY 2012

TEAM73HKLtd./2007-109D/May 2012

Revised on 4 Jan., 2008.

CONTENTS

1.0 INTRODUCTION 2.0 THE SITE 3.0 THE WORKS 4.0 GENERAL DESCRIPTION OF EXISTING TREES 5.0 TREE PRESERVATION PROPOSAL 6.0 SUMMARY

APPENDICES Appendix A – Tree Survey Plan

Appendix B – Tree Assessment Schedule

Appendix C – Photographic Reference of Existing Trees


1.0 INTRODUCTION

1.1 This report contains the tree identification, assessment and felling proposal for YL-DMW 107 The Construction of Football Pitch at Sik Kong Tsuen, Ha Tsuen, Yuen Long.

1.2 The survey and assessment of existing trees is conducted in accordance with Lands

Administration Office Practice Note No. 7/2007 issued by the Lands Department.

1.3 The tree identification provides a description and assessment of trees according to topographic survey conducted within the limit of the site boundary. All trees are identified and assessed in accordance with the name of species, size in height and spread, physical and health conditions, amenity value, survival rate for transplanting etc.

1.4 Based on the physical assessment of the tree as well as the tree’s inherent properties this report

will provide the recommendation on the status i.e. whether the subject trees should be retained or felled.

1.5 The topographic survey recorded a total of 252 numbers of existing trees of which 180 numbers

are living trees (inclusive 112 numbers of trees measured under 95mm DBH), 1 number is dead tree and 171 number are missing trees.

1.6 Base on the physical assessment of the trees as well as the trees’ inherent properties this report

will provide the recommendation on the status for each tree whether is should be retained or felled.

2.0 THE SITE

2.1 The site is located at Sik Kong Tsuen, Ha Tsuen, Yuen Long, it is a relatively flat site.

3.0 THE WORKS

3.1 The 9 nos. of trees within the boundary of the proposed football pitch shall have to be yield for the construction works.

3.2 The 9 nos. of trees shall have to be felled.

3.3 All of the 9 affected trees are self-seeded trees of undesirable species (Leucaena leucocephala 銀

合歡), the felling of these 9 trees do not require Tree Removal Application according to TWB TCW No. 3/2006.


4.0 GENERAL DESCRIPTION OF EXISTING TREES

4.1 The existing trees within the site boundary are mainly Leucaena leucocephala (銀合歡) Melaleuca leucadendron (白千層), Cassia siamea (鐵刀木), Celtis chinensis (朴樹), Macaranga tanarius (血桐), Ficus microcarpa(細葉榕), Melia azedarach(苦棟樹). Refer to Tree Survey Schedule for detail information for each tree.

4.2 This report includes the following information on each tree surveyed:

Tree Number Tree numbers are determined by Topographic Surveyors and are

corresponded to the tree survey plan.

Species Tree species are identified with their botanical and Chinese names.

Height Height of trees are measured in meters and are taken from level at ground to the top of trees.

Trunk Diameter Trunk Diameters (DBH) of trees are measured in millimeters and are

taken at above 1300mm height above ground level.

Crown Spread Crown Spread of trees is measured in meters.

4.3 The health condition and form of each tree are evaluated according to the following criteria:

G Trees of good form, moderate to large size and in good health are classified as good; F Trees of reasonable form, with few or no visible defects or health problems are

classified as being fair;

P Trees that are of poor form, badly damaged or clearly suffering from decay, dying back or the effects of very heavy vine growth are classified as poor.

4.4 Each tree is also graded and assessed on its amenity value. The factors that are taken into

consideration are conservation value, functional value, visual impact and aesthetic value. The assessment of each tree was evaluated according to the following criteria:

H Trees that are rare or protected species, Fung Shui significance or have high visual

impact with good health condition and form are classified as high in amenity value; M Trees that are common species with average health condition and acceptable form are

classified as medium in amenity value;

L Trees that are common species with poor health and form are classified as low in amenity value.

4.5 Based on the above criteria and the widening constraints, the trees are considered for the

following actions:

R Trees located on unaffected site areas are recommended to be retained and shall be protected during site formation and construction in vicinity areas.

T Trees located on affected site areas but have fair to god health condition, form and

amenity value are recommended to be transplanted. Trees that are to be transplanted shall be relocated to a suitable location on site or held in a nursery until site formation and construction is completed.

F Trees located on affected site areas but have poor health condition, form and amenity

value are recommended to be felled.


5.0 TREE PRESERVATION PROPOSAL

5.1 This proposal has taken into account all of the 180 nos. of living trees in total within the subject site. 68 nos. of tree are over 95mm DBH measured at 1.3 meters from ground level and 112 nos. of tree are below 95mm DBH.

5.2 Trees to be retained 171 trees out of 180 trees are proposed to be retained (refer to Appendix B: Tree Assessment

Schedule). The existing planting level will be maintained. The existing ground around the trees shall be carefully cultivated and aerated. All local depressed ground shall be leveled with top-soil and planted with ground-covers.

5.3 No trees shall be transplanted.

5.4 Trees to be felled There are 9 nos. of living trees proposed to be felled. 6 of the 9 nos. of living trees are below 95mm DBH. All of the 9 nos. of living trees are Leucaena laucocephala (銀合歡). The species of Leucaena laucocephala are considered as weeds and can be felled and removed without compensation. (refer to Appendix B: Tree Assessment Schedule). Among the trees to be felled, the species Leucaena leucocephala is self-seeded and considered to be undesirable for the landscape.

6.0 SUMMARY

6.1 The following table summarizes the overall proposal for all existing trees within the limit of affected slope works area:

Action Location

No. of Trees Surveyed

No. of Dead Trees

No. of Trees to be Retained

No. of Trees to be Transplanted

No. of Trees to be Felled

No of Trees to be Compensated

Within the site boundary 181 1 171 0 9 0


APPENDIX A Tree Survey Plan


APPENDIX B Tree Assessment Schedule

Recommodation Remarks

Tree ID

number

Tree Species

(in botanical name)

Chinese Name Overall Height

(M)

DBH (mm) Average crown

spread (M)

Form

(Good / Fair /

Poor)

Health Condition

(Good / Fair /

Poor)

Amenity Value

(High / Med /

Low)

Survivial Rate After

Transplanting

(High / Med / Low)

(Retain /

Transplant / Fell)

(including justification for proposed tree removal,

precious or rare or endangered species;

anticipated root-ball size to be preserved (with

diameter x depth in mm)etc.)

T70 Leucaena leucocephala 銀合歡 5.0 70 2.5 F F L L F Weed Species

T71 Leucaena leucocephala 銀合歡 4.0 120 1.5 P F L M F Weed Species

T72 Melaleuca leucadendron 白千層 4.0 60 0.6 G G H H R

T73 Leucaena leucocephala 銀合歡 6.0 240 2.0 P G L M R Weed Species

T74 Melaleuca leucadendron 白千層 8.0 120 1.5 F G M M R

T75 Not found

T76 Leucaena leucocephala 銀合歡 6.0 50 2.0 G G L M R Weed Species



T79 Leucaena leucocephala 銀合歡 4.0 40 1.0 P F L M R Weed Species

T80 Leucaena leucocephala 銀合歡 9.0 200 7.0 G G M L R Weed Species

T81 Leucaena leucocephala 銀合歡 4.5 110 1.5 G G M M F Weed Species

T82 Leucaena leucocephala 銀合歡 3.0 60 1.5 P G L L F Weed Species, Multi stem

T83 Melaleuca leucadendron 白千層 8.0 160 3 G G H H R

T84 Leucaena leucocephala 銀合歡 6.0 120 2 P F L L R Weed Species

T85 Leucaena leucocephala 銀合歡 7.0 150 2.5 P F L L R Weed Species

T86 Leucaena leucocephala 銀合歡 7.0 160 3 P F L L R Weed Species

T87 Leucaena leucocephala 銀合歡 7.0 150 2 P F L L R Weed Species, lean

T88 Leucaena leucocephala 銀合歡 6.0 50 1.5 P F L L R Weed Species, lean

T89 Leucaena leucocephala 銀合歡 7.0 150 2 P F H L R Weed Species

T90 Leucaena leucocephala 銀合歡 8.0 250 2.5 P G M L R Weed Species

T91 Leucaena leucocephala 銀合歡 4.0 50 1 G G M L R Weed Species

T92 Leucaena leucocephala 銀合歡 4.0 50 1.5 G F M L R Weed Species

T93 Leucaena leucocephala 銀合歡 7.0 80 2.5 F F M L R Weed Species

T94 Leucaena leucocephala 銀合歡 5.0 120 1.5 F G M L R Weed Species


T96 Leucaena leucocephala 銀合歡 4.0 130 1.5 F G M L F Weed Species

T97 Leucaena leucocephala 銀合歡 7.0 80 2 G G M M F Weed Species

T98 Leucaena leucocephala 銀合歡 7.0 60 2 G F H M R Weed Species

T99 Leucaena leucocephala 銀合歡 7.0 150 2.5 G F H M R Weed Species

T100 Leucaena leucocephala 銀合歡 6.0 120 2 F F M L R Weed Species

Tree Assessment Schedule at

Tree Size

Address: Football Pitch at Sik Kong Tsuen, Ha Tsuen, Yuen Long

Prepared by Team 73 HK Limited on 2 May, 2012


Tree ID

number

Tree Species

(in botanical name)


(M)


spread (M)

Form

(Good / Fair /

Poor)

Health Condition

(Good / Fair /

Poor)

Amenity Value

(High / Med /

Low)


Transplanting

(High / Med / Low)

(Retain /

Transplant / Fell)






Tree Size



T101 Leucaena leucocephala 銀合歡 6.0 120 2 F G M L R Weed Species




T105 Leucaena leucocephala 銀合歡 7.0 130 2.5 G F M L R Weed Species










T115 Leucaena leucocephala 銀合歡 5.0 70 2 F F H L F Weed Species


T117 Cassia siamea 鐵刀木 7.0 140 5 G G H H R






T123 Leucaena leucocephala 銀合歡 5.0 40 1.5 F F M L F Weed Species

T124 Leucaena leucocephala 銀合歡 4.0 30 1 F F M L F Weed Species






T130 Leucaena leucocephala 銀合歡 5.0 50 2 F F H L R Weed Species



Tree ID

number

Tree Species

(in botanical name)


(M)


spread (M)

Form

(Good / Fair /

Poor)

Health Condition

(Good / Fair /

Poor)

Amenity Value

(High / Med /

Low)


Transplanting

(High / Med / Low)

(Retain /

Transplant / Fell)






Tree Size




T133 Leucaena leucocephala 銀合歡 6.0 60 2 F F L L R Weed Species

T134 Leucaena leucocephala 銀合歡 4.0 30 1 F G H L R Weed Species, lean


T136 Leucaena leucocephala 銀合歡 5.0 30 1.5 F F M L R Weed Species, lean


T138 Leucaena leucocephala 銀合歡 10.0 150 4 F G H L R Weed Species





T143 Leucaena leucocephala 銀合歡 5.0 50 1.5 F F M L R Weed Species, Double trunk


T145 Leucaena leucocephala 銀合歡 6.0 40 2 F F H L R Weed Species, Double trunk














T159 Leucaena leucocephala 銀合歡 6.0 60 1.5 F F H L R Weed Species

T160 Melaleuca leucadendron 白千層 7.0 110 1.5 F G H H R




Tree ID

number

Tree Species

(in botanical name)


(M)


spread (M)

Form

(Good / Fair /

Poor)

Health Condition

(Good / Fair /

Poor)

Amenity Value

(High / Med /

Low)


Transplanting

(High / Med / Low)

(Retain /

Transplant / Fell)






Tree Size





T165 Leucaena leucocephala 銀合歡 8.0 200 4.5 F F H L R Weed Species






























Tree ID

number

Tree Species

(in botanical name)


(M)


spread (M)

Form

(Good / Fair /

Poor)

Health Condition

(Good / Fair /

Poor)

Amenity Value

(High / Med /

Low)


Transplanting

(High / Med / Low)

(Retain /

Transplant / Fell)






Tree Size







T198 Leucaena leucocephala 銀合歡 8.0 80 2 F P M L R Weed Species












T210 Leucaena leucocephala 銀合歡 10.0 120 5 F F M L R Weed Species, lean



T213 Leucaena leucocephala 銀合歡 10.0 170 4 F P M L R Weed Species, lean




T217 Leucaena leucocephala 銀合歡 7.0 70 2.5 F P M L R Weed Species, lean





T222 Not found


T224 Leucaena leucocephala 銀合歡 10.0 90 5 F F M L R Weed Species, lean


Tree ID

number

Tree Species

(in botanical name)


(M)


spread (M)

Form

(Good / Fair /

Poor)

Health Condition

(Good / Fair /

Poor)

Amenity Value

(High / Med /

Low)


Transplanting

(High / Med / Low)

(Retain /

Transplant / Fell)






Tree Size



T225 Leucaena leucocephala 銀合歡 9.0 70 3.5 F P M L R Weed Species, lean


T227 Leucaena leucocephala 銀合歡 5.0 90 1.5 F D M L Remove Weed Species,Dead Tree

















T244 Celtis chinensis 朴樹 7.0 250 5 F F M L R Lean

T245 Macaranga tanarius 血桐 6.0 130 4 F F M L R Lean



T248 Ficus microcarpa 細葉榕 7.0 200 5 F F M L R


T250 Melia azedarach 苦棟樹 9.0 300 5 F F M L R


T252 Ficus microcarpa 細葉榕 4.0 200 6 F F M L R previously topped


APPENDIX C Photographic Reference of Existing Trees

Technology

20120503 tree survey report