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GHD 140 Allstate Parkway Suite 210 Markham Ontario L3R 5Y8 Canada T 1 905 752 4300 F 1 905 752 4301 W www.ghd.com
September 24, 2019 Reference No. 11116840 Mississauga 1 Emblem Developments 22 Adelaide Street West Suite 2060 Toronto, ON M5H 4E3
Attention: Shamil Jiwani
RE: Traffic Impact Study Addendum 86-90 Dundas Street East Residential Condominium Mississauga Ontario
1. Introduction
GHD is pleased to present the enclosed Traffic Impact Study Addendum to examine the traffic related impacts from a recent proposed residential condominium development (with ground floor commercial area) located at 86-90 Dundas Street East in the City of Mississauga (see Figure 1).
The current site plan dated September 19, 2019 (see Figure 2 or attachment) prepared by Studio JCI proposes a total of 334 condominium units in 16 storeys, along with 324 sq.m. (3,488 sq.ft.) of ground floor commercial area.
The original development scheme of January 29th, 2018 prepared by A J Tregebov Architects proposed a total of 289 condominium units in 29 storeys, along with 158 sq.m. (1,701 sq.ft.) of ground floor commercial area. GHD prepared a Traffic Impact Study in October 31, 2018 based on the January 2018 site plan.
The proposed future subject site land uses proposed by the original (January 2018) and recent (September 2019) site plans are summarized in Table 1.
Table 1 Original and recent proposed site land uses
Commercial GFA Residential Units
Original (January 2018) 158 m2 (1,701 ft2) 289
Recent (September 2019) 324 m2 (3,488 ft2) 334
Differences (Recent Site Plan – January 2018 Site Plan) +166 m2 (1,787 ft2) +45
GHD | Traffic Impact Study Addendum | 80-90 Dundas Street east | Proposed Residential Development | 11116840 | 2
The assessment in this memo includes:
A review of the estimated future site trips based on the original and recent proposed land uses. A review of the parking requirements for the recent proposed land uses.
Our findings and conclusions are contained herein.
Figure 1 Site location
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GHD 140 Allstate Parkway Suite 210 Markham Ontario L3R 5Y8 Canada T 1 905 752 4300 F 1 905 752 4301 W www.ghd.com
2. Site trip generation The original proposed site traffic volumes was extracted from the Site Trip Generation Table in Section 5.1 of the October 2018 Traffic Impact Study (TIS).
The recent proposed site traffic was estimated from the trip rates contained in Trip Generation, 10th Edition, produced by the Institute of Transportation Engineers (ITE). Site trips for the residential condominium units were estimated based on the trip rates of Multifamily Housing (High-Rise) (LUC #222), and site trips for the commercial uses were estimated based on the trip rates of Shopping Centre (LUC # 820).
The 2016 Transportation Tomorrow Survey (TTS) data shows the existing non-auto modal splits are approximately 30% and 32% respectively for a.m. and p.m. peak hour. As a conservative analysis, the subject site is assumed to achieve the same transit model split applied to the future planning horizons. In addition, it is expected that patrons of the commercial use will primarily be residents of the proposed development. Therefore, an internal capture rate from the Trip Generation Handbook, 3rd Edition, produced by the Institute of Transpiration Engineers were applied to the estimated trip generation for the commercial use. Resulting in a gross trip reduction of 14% for a.m. peak hour and 10% for p.m. peak hour.
Table 2 summarizes the trip generation of the original and recent proposed site land uses.
Table 2: Original and recent proposed site trip generation
Land use Units / GFA Parameter
AM Peak Hour PM Peak Hour
In Out Total In Out Total
Original (October 2018
TIS)
Residential 289 units Trips 15 71 86 68 34 102
Commercial 158 m2 (1701 ft2) Trips 3 3 6 6 7 13
Total Site Trips 18 74 92 74 41 115
Recent (September
2019)
Residential (LUC 222) 334 Units
Trip Ratio 24% 76% 100% 61% 39% 100% Gross Trips 25 81 106 74 48 122
Non-auto Trips -8 -24 -32 -24 -15 -39 Vehicle Trips 17 57 74 50 33 83
Commercial (LUC 820)
363 m2 (3902 ft2)
Trip Ratio 62% 38% 100% 48% 52% 100% Gross Trips 2 2 4 24 25 49
Int. Cap. Trips 0 0 0 -10 -11 -21 Vehicle Trips 2 1 2 20 21 41
Total Site Trips 19 58 76 70 54 124 Trip Difference
(Recent Proposed Trips – Original proposed Trips) +1 -16 -15 -4 13 9
As indicated in Table 2, the recent (September 19, 2019) site plan is expected to generate 76 and 124 two-way trips at the weekday AM and PM peak hours, respectively, which is -15 and +9 trips than the trips
GHD | Traffic Impact Study Addendum | 80-90 Dundas Street east | Proposed Residential Development | 11116840 | 5
estimated in the Original (October 2018) TIS during the weekday AM and PM peak hours, respectively. Therefore, there will be no significant change from the findings and conclusions of our original TIS.
The October 2018 TIS concluded that, the existing Dundas Street road network in the vicinity of the site can be expected to have satisfactory operational characteristics and provide adequate capacity for the projected site traffic volumes. There are no recommended improvements at the study intersections or site driveway to accommodate the proposed development.
3. Parking requirement
The recent site plan (dated September 19, 2019) proposes 334 dwelling units and 324 m2 of ground floor commercial area. The development’s residential unit breakdown is as follows:
268 one bedroom units; and 66 two-bedroom units.
City staff have noted they are willing to accept parking rates as approved for the development at the southwest corner of Hurontario Street and Elm Street. The required parking provision was calculated using the proposed unit breakdown as summarized in Table 3 below.
Table 3 Parking Provision Table
Use Units Existing Bylaw
Required Parking Rate
City Proposed Parking Rate
Required Parking Supply
Resident Parking One bedroom – 268 units 1.25 0.9 242
Two bedroom – 66 units 1.40 1.0 66
Visitor Parking Total residential units – 334
units 0.20 0.15 50
Total 358
The proposed parking provision for the site is 349 parking spaces, including 32 car stackers located in the underground garage plus 3 car share spaces located on the surface level.
Therefore, the proposed parking supply with the introduction of car share is considered appropriate given the proximity to transit corridors with increased transit service level, consequently reducing the expected parking demand.
GHD | Traffic Impact Study Addendum | 80-90 Dundas Street east | Proposed Residential Development | 11116840 | 6
4. Conclusions / recommendation
Based on the review of the original and recent proposed site land uses and trip generations, the site plan (September 19, 2019) is expected to generate 76 and 124 two-way trips at the weekday AM and PM peak hours, respectively. Fortunately, this is 15 less trips during morning peak hour, hence there will be no recommendation for the proposed site plan. However, the latest site plan generates extra 9 trips than the trips estimated in the Original (October 2018) TIS during the weekday PM peak hours. This is not a significant amount of traffic compared to the two-way volumes on Dundas Street and therefore, with the recent site plan, there will be no material change to the findings and conclusions of our original (October 2018) TIS.
The October 2018 TIS concluded that the existing Dundas Street road network in the vicinity of the site can be expected to have satisfactory operational characteristics and provide adequate capacity for the projected site traffic volumes. Therefore, there are no recommended improvements at the study intersections or site driveway to accommodate the proposed development.
We trust the enclosed is sufficient for your needs, but please do not hesitate to contact the undersigned should you require any additional assistance.
Respectfully Submitted,
GHD
Sept 24, 2019
Will Maria, P. Eng. Dhaval Harpal, Dipl. T. Senior Project Manager Transportation Planner
Dhaval Harpal, Dipl. T.
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Gene
ral N
otes
:
1. T
hese
Con
trac
t Do
cum
ents
are
the
pro
pert
y of
the
Arch
itect
. Th
e Ar
chite
ct b
ears
no
resp
onsib
ility
for
the
inte
rpre
tatio
ns o
f th
ese
docu
men
ts b
y th
e Co
ntra
ctor
.Up
on
writ
ten
appl
icatio
n th
e Ar
chite
ct
will
pr
ovid
ew
ritte
n/gr
aphi
c cla
rifica
tion
or s
uppl
emen
tary
info
rmat
ion
rega
rdin
g th
e in
tent
of
the
Cont
ract
Doc
umen
ts.
The
Arch
itect
will
rev
iew
Sho
p Dr
awin
gs s
ubm
itted
by
the
Cont
ract
or fo
r des
ign
conf
orm
ance
onl
y.
2.
Draw
ings
ar
e no
t to
be
sc
aled
fo
r co
nstr
uctio
n.Co
ntra
ctor
to v
erify
all
exist
ing
cond
ition
s an
d di
men
sions
requ
ired
to p
erfo
rm th
e W
ork
and
repo
rt a
ny d
iscre
panc
ies
with
the
Con
trac
t Do
cum
ents
to
the
Arch
itect
bef
ore
com
men
cing
wor
k.
3. P
ositi
ons
of e
xpos
ed o
r fin
ished
mec
hani
cal o
r ele
ctric
alde
vice
s, fit
tings
, an
d fix
ture
s ar
e in
dica
ted
on
the
Arch
itect
ural
dr
awin
gs.
The
loca
tions
sh
own
on
the
Arch
itect
ural
dra
win
gs g
over
n ov
er t
he M
echa
nica
l an
dEl
ectr
ical d
raw
ings
. Tho
se it
ems
not c
lear
ly lo
cate
d w
ill b
elo
cate
d as
dire
cted
by
the
Arch
itect
.
20 D
e Bo
ers D
rive
suite
525
Toro
nto
ON
M3H
0H1
t. 41
6.90
1.65
28 f
. 416
.901
.896
2w
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.stud
iojc
i.com
CLIE
NT:
ARCH
ITEC
T:
DATE
:DE
SCRI
PTIO
N:
Revi
sions
:
DRAW
ING
NO.:
PRO
JECT
NO
.:SC
ALE:
DATE
:DR
AWN
BY:
ADDR
ESS:
86-9
0 DU
NDAS
STR
EET
EAST
, MIS
SISS
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MIS
SISS
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ED-U
SE B
UILD
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SEPT
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1911
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LAND
SCAP
E: SEFE
RIAN
DES
IGN
GRO
UP
CIVI
L:
SKIR
A &
ASS
OCI
ATES
LIM
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761
Bran
t Str
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Suite
202
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rling
ton,
ON
L7R
2H7
t. 90
5.63
4.31
10
3464
Sem
enyk
Cou
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, ON
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t. 90
5.27
6.51
00
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dela
ide
Stre
et W
, Sui
te 2
060,
Toro
nto,
ON
M5H
4E3
t. 64
7.93
3.00
24