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Arborist Report

For 3060 and 3072 Sixth Line

Oakville, ON (September 24, 2015)

This Report was prepared for:

Marton + Smith Landscape Architects MSLA

LMarton@MSLA.ca

416-492-9966

Table of Contents

1. Introduction page 2

2. Methods page 2

3. Discussion pages 2 to 3

4. Conclusions page 4

5. Tree Data page 5 to 14

6. References page 14

7. Const. Details page 15

This Report was prepared by:

D. Andrew White M. Sc. ISA Certified Arborist ON-0734.

78 Marcella St.

Toronto, ON, M1G 1L2. Tel: 416 431 2453

E-mail: DAWhiteTreeCare@Gmail.com

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1. Introduction

The following is an arborist report for the properties at 3060 and 3072 Sixth Line, in

Oakville Ontario. The purpose of this report was to ascertain the potential impacts of the

proposed development of the site on the trees on, and near, the subject site.

2. Methods

An on-site inspection was made on September 23, 2015. The sizes of individual trees

were measured as diameter at breast height (DBH), breast height being 137 cm from

ground level. The locations of these trees are indicated on the modified site plan (Fig. 1).

From the data collected plant Condition Rating (CR), Location Rating (LR), Species

Rating (SR), and minimum Tree Protection Zones (TPZ), were estimated.1,2 The

Appraised Values (AV) of road allowance trees were calculated according to the Trunk

Method.2

3. Discussion

There are plans to develop the site at 3060 and 3072 Sixth Line. Several non-exempt trees

would be removed, in order to allow for the proposed development (Table 1, Fig. 1).

Road Allowance Trees: There are eleven (11) road allowance trees adjacent the development. Four of these trees

would be incompatible with the proposed development, while seven are to be preserved

(Trees #1-4 & 8-10). (Table 1, Fig. 1).

Private Trees: Twenty five (25) privately owned trees over 20 cm DBH would be removed. The trees

would be too close to the worksite to be retained. None of the trees could be incorporated

due to the development plans (Table 1, Fig. 1).

Neighbours’ Trees: All of the trees on neighbouring properties would be retained, with little risk of injury.

The trees are more than their TPZ radii from the worksite (Table 1, Fig. 1).

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3.2 Tree Protection:

It is necessary to protect all trees designated for preservation during both demolition and

construction. This tree protection can be accomplished by protecting the said trees with

tree protection barriers. The minimum tree protection zone (TPZ) radius is based on the

diameter of the tree (TPZ≈0.06m/cm x DBHcm). Tree barriers for road allowance areas

would be composed of a 1.2 metres (4 ft) high orange plastic web snow fencing secured

on 2"x4" wood frames. Usually, large development sites are to be enclosed in 2.4 metres

(8 ft) high construction fences. 3,4

3.3 Replacement Trees:

A landscape plan is to be developed for the 3060 and 3072 Sixth Line property (Fig. 1).

All new trees planted on the site would be of large calliper nursery grown stock. The

trees would be transplanted as according to municipal codes and bylaws.4,5

(1) Minimum 50 mm calliper (2-inch wide stem) for deciduous trees

(2) Minimum 1.75-2.5 m height for coniferous trees

Trees would best be transplanted during the spring or autumn. Mid-summer transplanting

should be avoided. These trees are to be maintained in good condition. Supplemental

watering may be required during the drier periods of the year, especially during the first

two or three years after their transplantation. 4,5

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4. Conclusions

In order to allow for the proposed development at 3060 and 3072 Sixth Line four road

allowance trees would be removed, and Twenty five privately owned trees over 20 cm

DBH would be removed.

All of the trees to be retained would be protected by construction fencing during the

demolition and construction work on the site.

Marton + Smith Landscape Architects is developing a landscape plan for the 3060 and

3072 Sixth Line development site.

D. Andrew White M. Sc.

September 24, 2015

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6. Tree Data

Table #1. Tree number (No.), species, diameter at breast height (DBH), minimum Tree

Protection Zone (TPZ), comments, and Tree Category.

No. Tree Species DB

(cm)

TPZ

(m) Comments TC

#1 white cedar 32 2.4 To be preserved

City

#2 white cedar 52 3.6 To be preserved

City

#3 white cedar 29-32 2.4 To be preserved

City

#4 Manitoba maple 27-28 1.8 To be preserved

City

#5 Manitoba maple 17-18 NA Remove tree, fair

condition

City

#6 green ash 12-17 1.8 Remove tree, poor

condition

City

ROW

#7 white mulberry 10-12 1.8 Remove weed tree,

good condition

City

ROW

#8 silver maple 49 3.0 To be preserved

City

#9 silver maple 48 3.0 To be preserved

City

#10 silver maple 3-5 1.8 To be preserved

City

#11 silver maple 49 3.0 Remove tree, poor

condition

City

ROW

#12 Manitoba maple 18-22 1.8 Remove tree, fair

condition

Private

#13 Manitoba maple 16-21 1.8 Remove tree, fair

condition

Private

#14 Manitoba maple 14-18 NA Exempt tree, fair

condition

Private

#15 Manitoba maple 64 4.2 Remove tree, low-

fair condition

Private

#16 Manitoba maple 112 4.2 Remove broken

tree, poor condition

Private

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No. Tree Species DB

(cm)

TPZ

(m) Comments TC

#17 apple tree 8-10 NA Exempt tree, fair

condition

Private

#18 Manitoba maple 16-18 NA Exempt tree, fair

condition

Private

#19 white cedar 32-42 3.0 Remove tree, low-

fair condition

Private

#20 green ash 66 4.2 Dead tree, with

EAB

Private

#21 Manitoba maple 14-18 NA Exempt tree, fair

condition

Private

#22 Manitoba maple 14-16 NA Exempt tree, fair

condition

Private

#23 Manitoba maple 12-16 NA Exempt tree, fair

condition

Private

#24 Manitoba maple 26 1.8 Remove tree, fair

condition

Private

#25 Norway maple 31 2.4 Remove tree, fair

condition

Private

#26 white spruce 22 1.8 Remove tree, good

condition

Private

#27 white cedar 16-18 NA Exempt tree, fair

condition

Private

#28 white cedar 10-22 1.8 Remove tree, fair

condition

Private

#29 white cedar 18-23 1.8 Remove tree, fair

condition

Private

#30+ stag-horn sumacs 8-12 NA Exempt trees, fair-

good condition

Private

#31+ stag-horn sumacs 6-10 NA Exempt trees, fair-

good condition

Private

#32 white spruce 18 NA Exempt tree, good

condition

Private

#33 black walnut 10-14 NA Exempt tree, good

condition

Private

#34 stag-horn sumac 8-10 NA Exempt tree, good

condition

Private

#35 white cedar 24 1.8 Remove tree, fair

condition

Private

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No. Tree Species DB

(cm)

TPZ

(m) Comments TC

#36 common lilac 8-12 NA Exempt tree, good

condition

Private

#37 sugar maple 22 1.8 Remove tree, good

condition

Private

#38 white cedars 27 1.8 Remove tree, fair

condition

Private

#39 white cedars 27 1.8 Remove trees, fair

condition

Private

#40 cherry tree 24 1.8 Remove tree, poor

condition

Private

#41 white cedars 21 1.8 Remove trees, fair

condition

Private

#42 silver maple 58 3.6 Remove tree, poor

condition

Private

#43 green ash 38 2.4 Dead tree Private

#44 common lilac 12-14 NA Exempt tree, good

condition

Private

#45 common lilac 10-14 NA Exempt tree, good

condition

Private

#46 black walnut 18 NA Exempt tree, fair

condition

Private

#47 silver maple 52 3.6 Remove tree, poor

condition

Private

#48 Manitoba maple 20-28 1.8 Remove tree, poor

condition

Private

#49 Manitoba maple 58 3.6 Remove tree, very

poor condition

Private

#50 silver maple 56 3.6 Remove tree, low-

fair condition

Private

#51 black walnut 63 4.2 Remove tree, poor

condition

Private

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No. Tree Species DB

(cm)

TPZ

(m) Comments TC

#52 black walnut 32 2.4 Remove tree, fair

condition

Private

#53 black walnut 38 2.4 Remove tree, fair

condition

Private

#54 Manitoba maple 12-16 NA Exempt tree, fair

condition

Private

#55 Manitoba maple 54-58 3.6 Remove tree, fair

condition

Private

#56 Manitoba maple 14-18 NA Exempt tree, fair

condition

Private

#58 shining willow 14-18 NA Exempt tree, fair

condition

Private

#59 red elm 8-12 NA Exempt tree, good

condition

Private

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Figure #1: Arborist’s Plan and layout of the 3060 and 3072 Sixth Line property. Trees

are numbered, and tree protection barriers (red) are indicated.

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Photograph #1: South-east roadside trees #1 to #11 on the 3060 and 3072 Sixth Line

site.

Photograph #2: Roadside trees #9 and #10 on the 3060 and 3072 Sixth Line site.

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Photograph #3: Trees #12 to #18 on the south side of the 3060 and 3072 Sixth Line site.

Photograph #4: Trees #12 and #13 on the south-west corner of the 3060 and 3072 Sixth

Line site.

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Photograph #5: Trees #47 to #51 on the central section of the 3060 and 3072 Sixth Line

site.

Photograph #6: Trees #13 to #35 on the south-west section of the 3060 and 3072 Sixth

Line site.

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Photograph #7: Trees #42 to #46 on east side of the 3060 and 3072 Sixth Line site.

Photograph #8: Trees #47 to #52 on the north-central section of the 3060 and 3072 Sixth

Line site.

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Photograph #9: Trees #23 to #52 on the west side of the 3060 and 3072 Sixth Line site.

6. References 1- Council of Tree Landscape Appraisers. 2000. Guide for Plant Appraisal. 9th Edition.

International Society of Arboriculture.

2- International Society of Arboriculture of Ontario. 1998. Ontario Supplement to Guide

for Plant Appraisal 8th Edition. Ontario Chapter, International Society of Arboriculture.

3- Town of Oakville. 2009. Private Tree Protection By-law 2008-156 Amended by by-

law 2009-145. Town of Oakville, Forestry Section.

4- Halton Ontario. 2011. Halton Tree By-law 121-05 (http://www.halton.ca). The

Regional Municipality of Halton.

5- Government of Canada. 1994. Migratory Birds Convention Act, 1994 (1994, c. 22).

Department of Justice Canada.

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7. Construction Details