• 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

NEW Fully Certified Lab Open for Business in Water...

DST Consulting Engineers Inc. is excited to announce the opening of our new, CCIL certified laboratory in Waterloo, Ontario to provide material testing and quality control services. The lab will…


Read More

DST’s Syed Ahmed Work Published in Internati...

We are proud to announce DST’s Syed Ahmed, Engineer in Training working out of the Thunder Bay, Ontario operations, has recently had papers printed in two reputable international journals. In…


Read More

DST Supports up-and-coming Engineering Talent

Corporate responsibility continues to be a top priority for DST and we make every effort to give back to the communities in which we operate.  One area that is of…


Read More

OIAA Northern Chapter Golf Tournament

DST continues to be a proud supporter of the annual OIAA Northern Chapter Golf Tournament.  Every year, golfers tee off at the always tee-rific Pine Grove Golf Club in Sudbury, Ontario.  This year…


Read More

DST Will be Attending the 11th Annual IPC | Calga...

DST is once again proud to be a sponsor of the annual International Pipeline Conference in Calgary, AB. For more information on the conference please visit http://www.ipcyyc.com/.


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