Unlock Redevelopment Potential with a Record of Site Condition
With over 25 years specializing in environmental engineering, AEL Environment helps property owners and developers achieve Records of Site Condition (RSCs) to transform sites with commercial or industrial use, into properties intended for residential or institutional use.
What is an Record of Site Condition?
Under Ontario Regulation (O. Reg) 153/04, an RSC is required when a property’s use is changing to a more sensitive one (e.g., from commercial to residential). It proves that a site meets the stringent environmental standards set by the Ministry of the Environment, Conservation and Parks (MECP) through documentation and regulation.
An RSC provides a clear assessment of a property’s environmental status, documenting property history, environmental investigations, remedial actions, and other key environmental measures taken on the site.
Why Obtain a Record of Site Condition?
Obtaining an RSC for a site offers peace of mind to buyers, adds value to sellers, and opens up options to developers beyond the current site use. Additionally, for redevelopment projects—especially those converting land to more sensitive uses—an RSC is a requirement.

Comprehensive RSC Support – From Start to Finish
AEL Environment provides end-to-end support for RSCs, backed by deep regulatory knowledge and technical expertise. We help you streamline the process from planning to execution, depending on your goals and site-specific needs.
- Phase One Environmental Site Assessments (ESA) to O.Reg 153/04 Standards
- Phase Two Environmental Site Assessments to O.Reg 153/04 Standards
- Environmental Risk Assessments including Modified Generic Risk Assessments (MGRA) Tier 2 and 3
- Remedial Plan Design and Implementation including in situ, ex situ, and off-site disposal options
- Submission of RSC application and follow-up with the MECP through approval
Whether you’re acquiring a site planning a redevelopment, or preparing for sale, our team will tailor a site-specific strategy that helps achieve your end goals.
Trusted Partners in
Environmental Due Diligence
AEL has guided numerous clients through successful RSC filings. Our collaborative, client-focused approach means you’ll experience clear communication, expert insights, and full transparency every step of the way.
Ready to Transform Your Site?
Let’s discuss how an RSC can help achieve your development goals.
Case Study: Obtaining an RSC and Enabling the Sale of a PCE Impacted Industrial Site through Remediation and Risk Assessment

A TCE-impacted industrial site required soil and groundwater remediation, paired with a Risk Assessment to obtain an RSC and enable its sale.
What Our Customers Have To Say
AEL worked with us to assess, remediate, and file RSCs for a number of our sites. They used innovative technology in efficient ways, reducing the cost and working within our time frames. Their team is technically strong, and also able to communicate well.
Vince Polsoni, Manager of Station Sustainment
PowerStream Inc.

Helping Businesses Navigate Complex Environmental Regulations since 1999
AEL environment is focused on creating tailored solutions based on your end goals for each property. Let’s talk, and our team will guide you through the process.
The AEL Advantage
Save Time & Money
Our responsive team offers customized services and solutions that focus on achieving your end goals, and enabling you to make confident, informed decisions – efficiently and effectively.
Experience that Matters
Providing professional environmental engineering services for over 25 years, our team of experts will confidently address any environmental concern for your site, and offer strategic and practical options suited to your needs.
Access to Experts
Speak directly with an experienced specialist who be happy to answer any of your questions, big or small. We are committed to keeping you informed throughout the process.
Valuable Insights
In addition to receiving data-supported assessments and reports, we will help you understand how the information is applicable to your site-specific scenario.
