Phase I ESA (Environmental Site Assessment)
Phase II ESA (Environmental Site Assessment)
Phase III ESA (Environmental Remediation)
Selected Projects Completed
At EGT, we are committed to assisting our clients with issues concerning environmental compliance. We have a detailed and comprehensive understanding of environmental regulations, and an excellent relationship with local agencies and governments. EGT provides a wide range of assessment and cleanup services to assist our clients through environmental due diligence and construction phases of the project. A thorough understanding of your project, combined with our practical knowledge gained through years of experience and continuous training, allows us to recognize and promptly address important issues. Doing so helps you control costs and keep your projects on or ahead of schedule.
Our staff is fully trained and experienced in the identification of environmental hazards. We assess potential risks for our client, whether environmental or financial, in the development of their project.
Our complete environmental engineering services include the planning, design, construction, and operation as it pertains to environmental site assessments, remediation and more.
Within the context of a real estate transaction, an environmental site assessment (ESA) is a tool allowing managers to make an enlightened decision pertaining to environmental risks associated with the potential acquisition of a property. In several cases, phases I and II can be integrated in order to reduce both study costs and realization delays.
Environmental assessments conducted by EnviroGeoTesting include phase I, II & III site assessments, oil field reclamation and underground storage tank removals and remediation. Investigations are conducted in accordance with Alberta Environmental Protection, Canadian Council of Minister of the Environment, ASTM, AECB & CSA guidelines.
Our Environmental Services includes:
- Phase I ESA (Environmental Site Assessment)
- Phase II ESA (Environmental Site Assessment)
- Phase III ESA (Environmental Remediation)
- Risk Assessment
- Hydrogeological Assessment
- Inspection of underground Storage Tank (UST) Removals and Cleanups
- Soil Removal and Cleanup
- Ground Water Cleanup
- Mould and Asbestos Assessment
- Soil and groundwater water sampling services
- Topographical site surveying
- Surface and groundwater depth, quality and flow assessment
EA screenings under the Canadian Environmental Assessment Act to identify and mitigate the anticipated environmental effects for your projects.
PHASE I ESA (ENVIRONMENTAL SITE ASSESSMENT)
A Phase I ESA is a non-intrusive investigation conducted to identify actual or potential site contamination. The investigation and report writing shall be conducted using internal protocol and procedure. These adhere to CMHC requirements as prescribed in the NHA Mortgage Loan Insurance Handbook. The Phase I ESA shall be conducted in accordance with Latest CSA Standard Z768-01(R2006): Phase I Environmental Site Assessment guide lines, which set standards for review of information pertaining to the site, completion of detailed checklists, site inspection procedures and preparation of the final report.
Phase I ESA's shall be intended to help determine potential environmental liabilities and to establish the basis for further investigative work by:
- Identifying certain baseline environmental conditions;
- Assisting in meeting regulatory, legislative and policy requirements, by identifying compliance deficiencies, and serving as an initial step in site remediation plan preparation; and
- Providing the necessary information to make informed decisions about property transactions
Phase I ESAs shall be conducted using appropriate methodologies for the objectives in the scope of work, including the use of standardized and generally agreed upon procedures. Sufficient information should be obtained, evaluated, and presented to support the professional engineer's conclusions.
The four principal components of a Phase I ESA are:
- Records & aerial photograph review;
- Site visit;
- Interviews; and
- Evaluation of information and reporting.
Procedures used are detailed as follows:
- Retrieval and review of reasonable historical records: Air photos, land titles, underground storage tank records, water well records, appropriate governmental environment departments, and other sources as may be indicated during the course of the investigation.
- Review previous geotechnical reports for the land on the site, review previous environmental reports for the land, or the buildings on the site.
- Detailed site inspection using a comprehensive checklist to document current conditions of the site including spills, unidentified substances, staining, stressed vegetation, construction assemblies of any structures on the site and their contents. Land adjacent to the site will also be investigated, with particular attention paid to the possible presence of contaminants, details of sites in the vicinity being at the discretion of the owners.
- Interview persons that have first hand knowledge of the site these may include, past or current owners, neighbours, employees of any business operating on the site, etc. in order to uncover information not evident in records.
Upon completion of the historical review, site inspection and interviews a report will be prepared with a conclusion indicating either:
- The investigation did not reveal evidence of potential contamination and that no further action is recommended at this time, or alternately.
- The investigation revealed some potential for contamination and that further investigation, which may involve sampling and testing is recommended.
PHASE II ESA (ENVIRONMENTAL SITE ASSESSMENT)
The findings of a Phase I ESA or the known historic use of a site may lead to the recommendation of additional investigations on the subject property. These would typically involve the sampling and testing of soil, water, air or suspect materials.
Objective: The objective of a Phase II ESA is to characterize or delineate environmental conditions related to a property. It is the professional engineer's responsibility to carry out a detailed enough investigation to identify, characterize, or delineate the nature and extent of contamination both above and below grade on the property. The Phase II ESA shall be conducted in accordance with Latest CSA Standard Z769-00(R2004): Phase II Environmental Site Assessment guide lines.
Study Considerations: The principal components of a Phase II ESA are:
- Development of investigation and sampling work plans;
- Investigations and inspections; and
- Interpretation and reporting of sampling results.
Phase II Environmental Site Assessments Involves:
- Soil, Groundwater, and Surface Water Sampling, Testing, and Analysis
- Buried Drum and Tank Detection and Location
- Contamination Determination
- Groundwater Monitoring Well Installation
- Independent Chemical Laboratory Testing
- Environmental Services Reporting
A Phase II ESA shall be as detailed as necessary for the purpose of the study. It should be guided by such information as:
- the types of activities, processes and practices that have occurred on the site and on neighbouring sites;
- the framework of legislation and published guidelines that apply to the property;
- the amount and quality of pre-existing information on the site's potential contamination;
- such site-specific conditions as soil type, depth to ground water, direction and rate of ground water flow, ground water quality, surface water quality, sediment quality and depth to bedrock;
- the type and quantity of information required to design an appropriate remediation program; and
- the potential presence of designated substances, solid, liquid or hazardous wastes, raw materials, products and other dangerous goods.
Procedures used are detailed as follows:
- Techniques ranging from visual examination to geophysical methods including ground penetrating radar and electromagnetic response are used to target potential sample locations.
- Sample recovery can involve a number of procedures including: drilling to recover soil samples at various depths, the installation of piezometers to recover ground water samples, the collection of particles or vapour samples from the atmosphere or removal of materials from structural components.
- Samples are collected and subjected to field testing for various sources of contamination. These results are used to confirm and delineate the possible extent of contamination and selected samples are retained for laboratory testing to confirm the field results.
- Findings are evaluated to determine the extent and nature of contamination on the subject site. Comparisons of lab results with applicable standards are used to evaluate the level of contamination. Further analysis is conducted using the principals of geology, hydrogeology, geotechnology, and related applied science technologies.
- Recommendations are made in view of the level of contamination, current and future site use, potential for migration of contamination and rate of natural degradation of contaminants. They may vary from requirements for physical removal, to treatment in-situ or that no further action is necessary.
PHASE III ESA (ENVIRONMENTAL REMEDIATION)
The results of the Phase II assessment shall be sufficient to provide a representative description of the media/materials requiring remediation or management, by defining the contamination's nature, quantity, area, vertical distribution and location.
Objectives: The objective of remediation is most often to return an impacted property/site to an environmental condition that will sustain its intended reuse. Alternatively, the objective can be to secure the site in a manner that mitigates or prevents future adverse impacts.
Clean-up Targets: Generally, there are three approaches that can be used to determine the clean-up level to be achieved during site remediation in accordance relevant guidelines. These three options are:
- Clean-up to background condition;
- Clean-up for compliance with generic criteria; or
- Clean-up to criteria developed using site-specific risk assessment (SSRA) techniques.
In principle, clean-up to background can be used for any site. It is essentially a remedial strategy that restores the property to an environmental condition consistent with the ambient or background conditions.
In practice, such an approach is seldom, if ever, adopted. Clean-up criteria have been developed by several government agencies to assist proponents in establishing criteria that are protective of human health and/or the environment. Generic criteria are most commonly developed for such media as soil, ground water, surface water, air and sediment. These so-called "generic" criteria were developed for a range of applications, including different land uses, land-use sensitivity, depth of contamination, and surface water or ground water use.
A site management or remedial approach based on site-specific risk assessment shall be used to optimize site remediation for a particular site, based on conditions at that site.
Procedures used are detailed as follows:
- Development and Screening of Remedial Alternatives;
- Treatability Studies and Pilot Tests;
- Detailed Analysis of Remediation Alternatives;
- Design of Site Remediation Plan;
- Implementation of Site Remediation Plan;
- Preparation of Specifications and Tender Documents, Contractor Selection;
- Environmental follow-up after completion of works
- Final report
SELECTED PROJECT COMPLETED
Click here to download our completed project list
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