Unless otherwise approved by the Department as a condition of a new, renewal, or modified Individual Oil Operations Permit, an owner, an operator, and a person in charge of an OCS facility shall store OCS: On an impermeable base that has a permeability of 10-7 centimeters/second or less; Under a shelter; and At a volume that does not exceed a 90-day treatment capacity. An owner, an operator, and a person in charge of an OCS facility may not accept or store OCS that does not meet the requirements of Regulation .08 of this chapter.