Re: Tree Conservati n Report Rideau & Chapel Street Development (Ottawa)

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1 Eddie Wu, Principal B+H Planning & Landscape 481 University Avenue, Suite 300 Toronto, ON M5G 2H4 P.O. Box 13593, Ottawa, ON K2K 1X6 Telephone: (613) Fax: (613) Website: Urban Forestry & Forest Management Consulting April 24, 2015 Re: Tree Conservati n Report Rideau & Chapel Street Development (Ottawa) Dear Eddie, This report details a pre-construction Tree Conservation Report (TCR) for the above-noted property in Ottawa. The need for this TCR is related to the future re-development of the subject property. Such reports are required for all Plans of Subdivision and Site Plan Control Applications where there is a tree of 10 centimeters in diameter or greater on the property. The approval of this TCR by the City of Ottawa and the issuing of a permit m by them authorizes the removal of approved trees. No tree removal should occur before such a permit is issued. The inventory in this report details the assessment of all individual trees on the subject property. Field work for this report was completed on April 21, The construction proposed for the site includes the addition of two towers with commercial space at the street level. As a result of the degree of site disturbance associated with this construction retention of existing trees within the development site is impossible. All trees on city property along Chapel and Rideau Streets are also to be and only the single curb-side ash tree along Beausoleil Drive will be retained. Five juvenile trees which are in the way of construction are of a size and condition which would allow them to be successfully transplanted. This is noted in Table 1 on pages 2, 3 and 4. No trees on adjacent private property will be impacted by the proposed construction. The tree preservation and protection measures cited in this report will be followed to ensure the survival of the retained tree and hose on adjacent private property. TREE SPECIES, CONDITION, SIZE AND STATUS On the following pages Table 1 details the species, condition, size (diameter) and status of the individual trees on and adjacent to the subject property which will be affected by the proposed construc ion. Each of these trees is referenced by the numbers plotted on the accompanying tree plan prepared by B+H Planning & Landscape. 1

2 Table 1. Species, condition, diameter and status of trees at Rideau & Chapel development. Tree No. Tree Species Condition (VP E) DBH 1 (cm) Age class, tree condition notes & Preservation Status (to be, 1 Amur maple (Acer tartaricum subsp. ginnala retained or transplanted) VP 22 avg. Over-mature; double stemmed from grade; advanced decay in both stems; dense sprouting along both stems; hazardous; to be 2 Amur maple VP 44 avg. Over-mature; in advanced decline-only sprouts holding foliage; hazardous; to be 3 Manitoba maple (Acer negundo) 4 Sugar maple (Acer saccharum) VP 75 Over-mature; advanced internal decay in lower bole; fallen onto and damaging nearby fence; hazardous; to be F 23 Maturing; physical damage on lower stem-healing with rib of reaction wood below; crown very asymmetrical; to be 5 Red maple (Acer rubrum) G 5 Juvenile; recently planted tree; on City property; to be 6 Ash (Fraxinus spp.) F 31 Mature; co-dominant 5mdivergent with weak union; restricted rooting zone; treated for Emerald ash borer (EAB); on City property; to be retained 7 Red maple G 5 Juvenile; recently planted tree; on City property; to be 8 Red maple G 4.5 Juvenile; recently planted tree; on City property; to be 9 Honey-locust (Gleditsia triacanthos) G 4.5 Juvenile; recently planted tree; on City property; to be 10 Honey-locust G 4.5 Juvenile; recently planted tree; on City property; to be 11 Ash F 52 Mature; dominant central stem for half of height; broad, symmetrical crown; restricted rooting zone; treated for Emerald ash borer (EAB); on City property; to be 12 Little-leaf linden (Tilia cordata) VG 46 Mature; dominant central stem; symmetrical crown; good root collar; to be 13 Little-leaf linden G 38 Mature; dominant central stem for half of height; heavy basal sprouting; very recent branch loss from passing truck; to be

3 Table 1. Continued Tree Tree Species No. Condition (VP E) DBH (cm) Age class, tree condition notes & Preservation Status (to be, retained or transplanted) 14 Crab apple (Malus spp.) F 37 Mature; crown dense with sprouts; generally upright form; to be 15 Manitoba maple F 58 Mature; double stemmed at 2m from gradeweak union; broad crown; growing on angle over road and sidewalk; sloped, restricted rooting zone; recent history of fallen branches; to be 16 Manitoba maple F 57 Mature; double stemmed at 2m from gradeweak union; broad crown; growing on angle towards existing building; sloped, restricted rooting zone; recent history of fallen branches; to be 17 Amur maple P 34 avg. Over-mature; double stemmed from grade; dense basal sprouting; extensive internal decay in western stem-hazardous; to be 18 Little-leaf linden F 43 Mature; dominant central stem with competing leaders; crown asymmetrical due to competition with tree #17; to be 19 Japanese tree lilac (Syringa reticulata) F 17* Mature; multi-stemmed from grade; heavily cut back on southwest side of crown; to be 20 Little-leaf linden F 29 Mature; dominant central stem for most of height; growth stunted due to restricted rooting zone; to be 21 Little-leaf linden G 32 Mature; co-dominant stems at 2.5mdivergent; to be 22 Manitoba maple F 40* Mature; co-dominant stems at 3.5m-weak union; major deadwood and decay in upper crown-in decline; to be 23 Little-leaf linden G 30 Mature; dominant central stem to top; crown asymmetrical due to competition with tree #22; to be 24 Manitoba maple F 22* Maturing; growing on angle towards east due to competition with tree #22; major deadwood and decay in upper crown-in decline; to be 3

4 Table 1. Continued Tree Tree Species No. 25 Siberian elm (Ulmus pumila) Condition (VP E) DBH (cm) Age class, tree condition notes & Preservation Status (to be, retained or transplanted) P 44 Mature; located on City property; codominant stems at 2m; longitudinal wound on south side of main stem reaching into primary union; basal decay; weak wooded species-prone to storm damage; to be 26 Siberian elm F 51 avg. Mature; located on City property; tristemmed from grade; basal decay on east side; weak wooded species-prone to storm damage; to be 27 Siberian elm F 57 Mature; located on City property; basal decay on south side, growing on angle towards northeast - stability questionable; weak wooded species-prone to storm damage; to be 28 Manitoba maple F 19 Maturing; located on City property; growing on heavy angle over sidewalk; to be 29 Manitoba maple F 23 avg. Maturing; double stemmed from grade- one stem generally upright, one divergent; located on City property; to be 30 Siberian elm VP 17 avg. Line of formerly hedged trees; located on City property; originally pruned to 0.7m, later 2.25m; heavily sprouting at greater height; some sprouts now failing due to internal decay, poor attachments; approximately 32 stems in total; to be 31 Amur maple P 10 avg. Mature; approximately 10 stems from gradevery dense; growing through chain link fence; to be 1 Diameter at breast height, or 1.4m from grade. * Estimated diameter as tree is located behind protective hoarding. Pictures 1 through 5 on pages 6, 7, 8 and 9 show selected trees on the subject property. TREE PRESERVATION AND PROTECTION MEASURES Preservation and protection measures intended to mitigate damage during construction will be applied for the trees to be retained on and adjacent to the subject property. The following measures are required by the City of Ottawa to ensure tree survival during construction: 4

5 1. Erect a fence at the critical root zone (CRZ 1 ) of trees; 2. Do not place any material or equipment within the CRZ of the tree; 3. Do not attach any signs, notices or posters to any tree; 4. Do not raise or lower the existing grade within the CRZ without approval; 5. Tunnel or bore when digging within the CRZ of a tree; 6. Do not damage the root system, trunk or branches of any tree; 7. Ensure that exhaust fumes from all equipment are NOT directed towards any tree's canopy. 1 The critical root zone (CRZ) is established as being 10 centimetres from the trunk of a tree for every centimetre of trunk Diameter at breast height (DBH). The CRZ is calculated as DBH x 10 cm. Please do not hesitate to contact me with any questions concerning this Tree Conservation Report. Yours, Andrew Boyd Andrew K. Boyd, B.Sc.F, R.P.F. Consulting Urban Forester 5

6 Picture 1. Trees #2 and 3 (foreground) at Rideau & Chapel Street development site. Picture 2. Trees #12 through 16 at Rideau & Chapel Street development site. 6

7 Picture 3. Trees #19 through 23 at Rideau & Chapel Street development site. 7

8 Picture 4. Trees #25 through 29 at Rideau & Chapel Street development site. 8

9 Picture 5. Elm hedge #30 at Rideau & Chapel Street development site (note heavy sprouting at height of fence). 9