Around 10:30 am, a broken door enclosing the still caused tetrachloroethylene vapours to escape into a dry cleaning shop, along with the spreading of 30 kg of liquid tetrachloroethylene into the dry cleaning machine retention basin. Upon arrival of the classified facilities inspector at about 4:00 pm, all of the shop’s doors and windows were wide open, and an after-sales service technician was absorbing the remainder of product present in the retention area with a sponge. The inspector offered the observation that no product contents could possibly have flowed from the retention basin into the municipal sewer network. Consequently, the impact of this leak on the environment was limited, consisting solely of the release of tetrachloroethylene vapours into the atmosphere.