My site plan has been critiqued by a peer review engineer who stated that my snow storage areas are inadequate. I commonly provide 2-3% of the paved area or increase the minimum parking requirements to provide an area of the lot that can be used to pile snow. Some winters like the last see little snow while others like 2014 see 10 feet of snow over the course of the winter months. Does anyone you have a suggested better rule of thumb or a reference guideline for how much snow storage should be provided? Much appreciated. _PJ