"The facts found above establish the presence of tanks on the site with a total volume in excess of 1,100 gallons, suggesting that they constitute a facility as that term is defined in the regulations at 6 NYCRR ??612.1(c)(10), i.e., one or more stationary tanks, including any associated intra-facility pipelines, fixtures or other equipment, which have a combined storage capacity of over eleven" . . . .