RJS Environmental Services
Underground Storage Tank Removal and Remediation

RJS Logo 06Oct2011

In most cases, a non-intrusive Stage 1 PSI is sufficient to assess the level of risk for contamination at a given site, and in most cases, the level is low and no further investigation is required. However, there are instances where an underground storage tank (UST) is found on the property, and has to be removed.

RJS then retains the services of a reputable tank removal company to extract the UST and test the soil in the tank nest for contamination (such as furnace oil or Bunker C). Soil samples are sent to and accredited laboratory for analysis. If lab results indicate no contamination is present, the void is backfilled with clean material, compacted to grade and paved over if necessary.

If the lab results indicate some or all of the samples are above applicable soil and groundwater guidelines, further excavation of the contaminated areas are performed and retested until no further contamination is found. This eliminates the need for an expensive and time-consuming program to install monitoring wells. 

 

RJS also researches off-site properties within 150 m of subject property for other potential sources of contamination (PSCs), such as existing or former service stations, dry cleaners, and auto mechanic shops. These may be on the subject site or located nearby. 

The extended Stage 1 report includes:

  • Inspection and photographic documentation of the site and adjacent properties
  • Review of land use and permitting records
  • Analysis of historical air photos
  • Historical directory search
  • Interviews with knowledgeable sources
  • Sampling methodology and parameters for potential sources of contamination (PSCs)
  • Material testing (soil and / or groundwater)
  • Laboratory analysis of samples taken
  • Results of samples compared to applicable soil and groundwater guidelines
  • Detailed report of results and recommendations including, if necessary, the need for further testing

In many instances, if for example a UST is removed and the surrounding soil is found to contain contaminants, the contaminated soil can be excavated and the soil retested until no further contamination is found. 


 

 

For questions and estimates, please contact:

James Slater, B.A., B.Sc., R.P.Bio.
Principal, RJS Environmental Services

Phone: 604-732-5939
Cell:     604-828-6872

e-mail:  jim@rjsenvironmental.com

determine the degree of contamination and characterize the type of contaminant(s). - See more at: http://www.valhallaconsulting.ca/contaminated-sites-a-remediation/stage-2-psi--phase-ii-esa#sthash.BSmaW9hj.dpuf
determine the degree of contamination and characterize the type of contaminant(s). - See more at: http://www.valhallaconsulting.ca/contaminated-sites-a-remediation/stage-2-psi--phase-ii-esa#sthash.BSmaW9hj.dpuf
determine the degree of contamination and characterize the type of contaminant(s). - See more at: http://www.valhallaconsulting.ca/contaminated-sites-a-remediation/stage-2-psi--phase-ii-esa#sthash.BSmaW9hj.dpuf