• Home
  • About Us
    • Our Vision
    • Our History
    • Our People
    • Awards
  • Client Sectors
    • Mining
    • Energy
    • Government
    • Infrastructure
    • First Nations

  • Services
  • Careers
  • News + Media
    • Community
    • DST Newsroom
  • Contact Us

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.

Back

NEW! VIBACCESS

Vibration & Noise Monitoring Service

User friendly internet service that provides analysis of vibration and noise event information with near-real time transmission to subscribers. Specialized graphical map shows you location of sensors, compatible with a variety of devices.

Read More Login

Community Events

Spring UP to Clean UP Launch a Huge Success!

Spring is here! Time to Spring Up for a litter-free Thunder Bay!    Thursday, May 4th was the official launch of the City of Thunder Bay’s annual Spring Up to…


Read More

DST WINS 2017 CONSULTING ENGINEERS OF ONTARIO AWAR...

DST Consulting Engineers Inc. has won the Consulting Engineers of Ontario Award of Merit in the Environment category for the ‘Natural Waterfall as a Green Solution to Stormwater Management for…


Read More

DST at the Ontario Prospectors Association Showcas...

DST is a proud supporter of the annual Ontario Prospectors Association Showcase in Thunder Bay, Ontario. This event draws participants from across Ontario to share news about fantastic resource discoveries,…


Read More

DST TO HOST 2017 SPRING UP TO CLEAN UP CAMPAIGN LA...

We are excited to announce that DST has teamed up with EcoSuperior and the City of Thunder Bay to launch the 2017 Spring Up to Clean Up campaign!   Each…


Read More

DST IN COLLABORATION WITH UNIVERSITY OF OTTAWA HAS...

We are excited to announce that DST Project Manager Dr. Bani Hashemi has been selected as the team leader for a collaborative research project investigating innovative contaminated soil treatments. In March…


Read More

Blasting Videos

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

View More