Back of the envelope calc says this is about the weight of say a dozen passenger cars or say 1 passenger car (weight) per month over a year? Doesn't sound like

Back of the envelope calc says this is about the weight of say a dozen passenger cars or say 1 passenger car (weight) per month over a year? Doesn't sound like a major industrial operation to me and how many tons are STILL out there in old air conditioners and refrigerators that could be leaking?