Respondent owns and operates a controlled temperature storage warehouse. The Facility is located within a mixed business-residential area within half a mile of many businesses and residences. At the time of the EPA inspection, approximately 14,600 pounds in total ammonia was present at the Facility; however, the facility had two (2) separate refrigeration systems, each of which contained approximately 7,300 pounds of anhydrous ammonia through various physical states to cool the products in Respondent’s Facility.