The Phase I flagged something, or the property has a history, a service station, a dry cleaner, an auto shop, an old mill site. Environmental findings do not automatically end commercial financing in British Columbia, but they change which lenders will look at the file, at what leverage, and how long it takes.

A Phase I environmental site assessment is a records, interview and site review with no sampling. It either gives a clean opinion or it identifies areas of potential environmental concern.
Those findings are what trigger a Phase II, which involves actual sampling of soil and groundwater and takes considerably longer.
Under British Columbia's contaminated sites regime, responsibility for remediation can attach to a range of parties connected to a site, and a lender that ends up taking possession of a property has to think about where it sits in that picture. Whether it applies to your specific property is a question for your lawyer.
Commercially, it explains why a bank will decline a file that a private lender will price.
A clean Phase I keeps the file in bank and credit union territory. Identified concerns without sampling usually mean a Phase II before anyone will commit.
Confirmed contamination generally moves the file to lenders with specific appetite for it, or to private capital, at lower leverage and higher cost, often on a short term basis while remediation is carried out. Fuel history sites are their own category, which is covered on the gas station financing page, and older industrial property raises the same questions.
Order the environmental work early rather than discovering it at the last minute, and search the site registry before you are committed.
Use a vendor holdback or a price adjustment where contamination is the vendor's to deal with. And where remediation is the answer, understand that lenders will want to see it completed and certified rather than promised.
A senior broker will tell you whether this is a bank file, a credit union file, or a private file, and what it changes about leverage and timing.