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Environmental Site Assessments

Environmental Site AssessmentsDST has conducted numerous Phase I/II/III Environmental Site Assessments across Canada. A Phase I Environmental Site Assessment consists of a review of historical reports and records, interviews, a site reconnaissance, and other research to identify potential or existing environmental contamination liabilities. This evaluation assesses the underlying condition of the land as well as historical and current usage. If significant environmental contaminating activities are discovered through the Phase I ESA, then a Phase II ESA is undertaken to confirm and describe the presence/absence and extent of contamination. This involves a review of information from the Phase I ESA and the collection of soil, groundwater, and sediment samples in order to quantitatively analyze the presence or absence of contamination. Methods used to collect samples may include the advancement of test pits, boreholes, monitoring wells, or soil vapour collection. A subsequent Phase III ESA delineation study may also be undertaken to describe the depth or spread of a contamination plume. During the Phase III ESA, we aim to further delineate the horizontal and vertical depth of contamination and will undertake further testing, sampling, and monitoring. A Phase III ESA typically also involves evaluation of remediation methods and options, costs, and feasibility of site cleanup. DST also completes National Classification System for Contaminated Sites scoring for contaminated sites under federal jurisdiction. Such studies conform to CSA standards, provincial regulations (eg. O. Reg. 153 as amended), as well as federal CCME methodologies.

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Community Events

Englobe and DST Join Forces

OTTAWA, Dec. 10, 2018 /CNW/ – Englobe Corp. (“Englobe”), a Canadian leader in Soils, Material and Environmental Engineering, with an established network of more than 55 offices and 30 laboratories across…


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Holiday Season Opens up with the Greater Sudbury C...

It’s party season! DST kicked off December with the Greater Sudbury Chamber of Commerce as a sponsor of their annual Holiday Party. A wonderful time was had by all –…


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DST CONSULTING ENGINEERS ANNOUNCES PARTNERSHIP WIT...

OTTAWA, ON (November 6th, 2018) – DST Consulting Engineers Inc. (DST) has signed an exclusive Canadian Distributor Agreement with Encardio rite Electronics Pvt. Ltd. for geotechnical, structural and ground water…


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Skills Ontario – Career Exploration in Thunder Bay

Across the province, Skills Ontario has been gathering high school girls in different cities to explore careers in the skilled trades and technologies. These events provide participants the opportunity to…


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Bump, set, spike! Hope Beach Volleyball Tournament...

DST was a proud supporter of this year’s HOPE Beach Volleyball tournament held annually at Mooney’s Bay in Ottawa, Ontario.     The DST VolleyBrawlers had a fantastic time serving…


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Blasting Videos

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Our qualified blasting engineers design more than just rock-cuts and mines. They take down structures! Reinforced concrete buildings, smokestacks, steel tanks…

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