How did a gas station leak tens of thousands of litres of gas into the ground without being immediately detected? 

That question is top of mind for some as cleanup efforts continue at the Murrays Irving and Irving I-24 truck stop on the outskirts of Woodstock.

Since mid-December, vacuum trucks have been working around the clock at the Beardsley Road site to clean up what could total more than 100,000 litres of diesel fuel from a cracked pipe leading to an underground storage tank. 

But how such a …