Vegetation and Ecosystem Mapping and Wildlife Baseline Studies
Selwyn Project, Howards Pass, Yukon/NWT
Selywn Chihong Mining Ltd.

The proposed Selwyn mine is located in southeastern Yukon near the border with Northwest Territories. Selwyn Chihong Mining Ltd. is proposing one of the largest zinc-lead mines in the world; Madrone is assisting in the preparation of the environmental assessment. We have provided Terrestrial Ecosystem Mapping (TEM), Terrain Stability Mapping (TSM), baseline vegetation sampling for heavy metals, and wildlife habitat suitability surveys. Our field assessments comprised proposed areas for the mine site, two pipeline corridors, a filter plant, and an access road. Mapping for the mine site was completed in 2007 using hard copy aerial photos. TEM was completed using PurVIEW 3D terrain viewing software in 2010-2011 for the corridors and filter plant. The main objective of the vegetation studies was to collect baseline vegetation community information to facilitate vegetation community classification and develop a detailed terrestrial ecosystem map. Wildlife habitat suitability surveys occurred in conjunction with the TEM field work in 2010. The TEM data and mapping was used to interpret the ecosystem attributes for habitat suitability for nine identified wildlife Valued Environmental and Socio-economic Components (VESECs) species (Woodland Caribou, Grizzly Bear, Moose, Wolverine, Marten, Lynx, American Beaver, Trumpeter Swan and Gyrfalcon), and one ecosystem VESEC (wetlands). Terrain Stability Mapping was used to identify landslide, snow avalanche, and permafrost hazards that might affect the mine facilities, pipelines and roads. In addition to mapping, Madrone conducted site inspections of the proposed access road to aide in the design and routing.


Terrestrial Ecosystem Mapping of Coastal Douglas-Fir (CDF) Biogeoclimatic Zone
Southern Coastal BC
Integrated Land Management Bureau (ILMB)

The Coastal Douglas-Fir (CDF) Biogeoclimatic Zone is an ecosystem found in Canada only along the east coast of Vancouver Island, the Gulf Islands and parts of the Lower Mainland, and it has been heavily impacted by development. Madrone conducted a multi-year project in which the entire CDFmm (212,660 ha), with the exception of the Lower Fraser Valley and Gulf Islands National Park Reserve, was mapped. We followed the provincial Terrestrial Ecosystem Mapping (TEM) standards for mapping and capturing digital terrain and ecosystem data, using Level 5 (5% – 14%) survey intensity. Terrain and ecosystem mapping, field sampling and air photo interpretations were completed at a scale of 1:16,000.


Terrain, Terrain Stability Classification, and Soil Erosion Potential Mapping
Leech Water Supply Area (LWSA), and the Sooke and Goldstream Watersheds
Capital Regional District

The Capital Regional District retained Madrone to conduct an inventory of the various terrain components of the watersheds that supply drinking water to approximately 340,000 people in the Greater Victoria Metropolitan area.  The objectives of this project were to identify, map and describe the terrain, terrain stability, and soil erosion potential in the 19,800 ha Greater Victoria Water Supply Area (divided into the Sooke, Goldstream, and Leech water supply areas). This was done at a scale of 1:10,000 to approved BC methodologies. The mapping was conducted using PurVIEW 3D terrain viewing software with map blending and edge matching to existing biophysical maps to create a seamless terrain data set. Extensive field verification of map interpretations was conducted by Madrone professionals in 2011.