Stantec Inc. is an international professional services company in the design and consulting industry. Founded in 1954, Stantec provides professional consulting services in planning, engineering, architecture, interior design, landscape architecture, surveying, environmental science, project management, and project economics for infrastructure and facilities projects. The Company provides services on projects around the world through over 15,000 employees operating out of more than 250 locations in North America and 7 locations internationally. Wikipedia.
Marmion P.,Stantec Inc.
ASHRAE Journal | Year: 2012
The management of the Abbotsford Regional Hospital and Cancer Center (ARHCC) considered rethinking the hospital design practice to reduce the amount of energy consumed in the facility. The Private-Public Partnership (P3) process created an integrated team comprised of the funding agencies, the owner, architects, engineers, user groups, contractors and building operators. Their efforts resulted in an acute care hospital that used 34% less energy than an equivalent code-compliant building, and resulted in an annual savings of $475,000. The hospital's design had to achieve at least three LEED energy points under the P3 contract, which required the hospital's energy performance to be at least 25% better than the ASHRAE Standard 90.1-1999, code-compliant building. Many possible energy conserving measures (ECMs) were analyzed by the design team with the assistance of the project's energy consultant to achieve the three LEED energy points and to validate the hospital's operating energy.
Aykanat T.,University of Windsor |
Bryden C.A.,Stantec Inc. |
Heath D.D.,University of Windsor
Journal of Evolutionary Biology | Year: 2012
An approach frequently used to demonstrate a genetic basis for population-level phenotypic differences is to employ common garden rearing designs, where observed differences are assumed to be attributable to primarily additive genetic effects. Here, in two common garden experiments, we employed factorial breeding designs between wild and domestic, and among wild populations of Chinook salmon (Oncorhynchus tshawytscha). We measured the contribution of additive (V A) and maternal (V M) effects to the observed population differences for 17 life history and fitness-related traits. Our results show that, in general, maternal effects contribute more to phenotypic differences among populations than additive genetic effects. These results suggest that maternal effects are important in population phenotypic differentiation and also signify that the inclusion of the maternal source of variation is critical when employing models to test population differences in salmon, such as in local adaptation studies. © 2012 The Authors. Journal of Evolutionary Biology © 2012 European Society For Evolutionary Biology.
Bostwick L.,Stantec Inc. |
Rowe R.K.,Queens University |
Take W.A.,Queens University |
Brachman R.W.I.,Queens University
Geosynthetics International | Year: 2010
Results are reported from laboratory experiments to examine the potential shrinkage of two different geosynthetic clay liners (GCLs) when subject to repeated wetting and drying cycles. One GCL had a scrim-reinforced nonwoven carrier geotextile (denoted as GCL2) and the other had a nonwoven carrier geotextile (GCL4). Tests were conducted with both restrained and unrestrained GCL specimens of the same size as well as restrained specimens with different specimen sizes and length-to-width aspect ratios. For unrestrained specimens, there was no apparent difference between shrinkage in the transverse and longitudinal directions for GCL2, whereas GCL4 tended to shrink more in the longitudinal direction. There was only a small difference between restrained and unrestrained tests, with the restrained specimens giving a maximum strain about 1.1 times higher than the unrestrained for GCL4. There was no clear effect of the specimen size on the measured shrinkage. For restrained specimens, shrinkage increased with increasing aspect ratio up to an aspect ratio of approximately 5. The dry mass per unit area of the product was found not to affect shrinkage when the mass per unit area was evenly distributed. However, specimens with an uneven bentonite distribution (typically those with a low mass per unit area) can have areas of little to no bentonite content, and these specimens experienced much higher shrinkage than other specimens. A high degree of variability between specimens for apparently similar test conditions was observed. Even more noteworthy is the fact that the maximum shrinkage observed in these tests (14.4%) was well below the maximum of 23% observed by previous investigators using the same methodology and nominally the same product. This shows the difference that can occur between different rolls of nominally the same product. © 2010 Thomas Telford Ltd.
Davies M.J.E.,Stantec Inc.
Developments in Environmental Science | Year: 2012
The Athabasca Oil Sands Region of northeastern Alberta has been, and will continue to be, a significant source of SO 2 and NO X emissions. Ambient air quality models that simulate transport, dispersion, chemical transformation, and deposition processes have been used in the region for the past 30 years to help manage ambient air quality due to these emissions. Model applications originally focused on evaluating SO 2 emissions and later shifted to include other chemical compounds such as NO X. The early efforts focused on field studies to collect region-specific data to understand plume behavior and develop site-tuned models. As the regulatory models improved, the focus shifted from development of site-tuned models to adoption of the updated regulatory models. Over the last decade, the CALMET/CALPUFF model system has become the de facto standard for assessing air quality in the region by industry, regulatory, and multistakeholder organizations. A case study application of this model system applied to support a lichen bioindicator program is discussed. Specifically, the sulfur and nitrogen contents in lichen tissues collected at 359 sites located up to 150km from the primary emission source region were compared to sulfur and nitrogen deposition predictions. Both the model predictions and the lichen measurements indicate that the main air quality footprint is within 20km of the main emission sources. © 2012 Elsevier Ltd.
LaPaix R.,Dalhousie University |
LaPaix R.,Stantec Inc. |
Freedman B.,Dalhousie University
Landscape and Urban Planning | Year: 2010
Urban parks are important places for the conservation of biodiversity within cities, but their vegetation is affected by a number of anthropogenic stressors. This study took an exploratory approach to examining the influence of management, land-use legacy, fragmentation-related factors, and natural disturbance (by a hurricane) on compositional and structural indicators of vegetation within urban parks of the Halifax Regional Municipality, Nova Scotia, Canada. The study sites (each a particular park) were selected using a stratified random sampling procedure, based on the size of the parks. Plots of 10. m x 10. m were randomly distributed throughout the sites and used to quantify plant composition, forest structural attributes, and environmental variables. Variation in composition was described using species and plant functional groups, which were identified by combining information on growth form, life history, and biogeographical status. Plant communities within the parks varied greatly in character, and ranged from remnants of natural forest dominated by native species, to structurally simple anthropogenic habitats comprised mostly of exotics. Historical use and edge influences (from trails and stand boundaries) were significantly associated with variation in vegetative composition within semi-natural forests, particularly reflecting a higher prominence of exotic taxa. The intensity of hurricane disturbance also had a strong influence on affected communities, but was not found to promote exotics. Results of this study suggest ways to direct the design and management of urban parks in ways that help conserve native biodiversity, and thereby enhance their ecological integrity. © 2010 Elsevier B.V.