Applicability. The requirements of this chapter apply only to the following oil storage facilities: An oil storage facility with a new or existing gasoline UST system located in a high risk groundwater use area (HRGUA) or well head protection area (WHPA); and An oil storage facility that meets the definition of a high risk underground oil storage facility under Regulation .07A of this chapter. In addition to the requirements of this chapter, an owner of a new or existing gasoline UST system and an owner of a high risk underground oil storage facility is subject to the requirements under COMAR 26.10.01—26.10.06, 26.10.08—26.10.12, and 26.10.16. Variances. The Department may grant an owner of a new or existing gasoline UST system or a high risk underground oil storage facility a variance from one or more requirements of this chapter if the owner demonstrates the UST system or oil storage facility is not a threat to groundwater. An owner applying for a variance provided under §B(1) of this regulation shall submit to the Department the following information: A survey of groundwater use within a 1/2 mile radius of the oil storage facility; A description of the construction materials used for the UST system; A description of the release detection methods used to protect groundwater; A description of operation and testing methods used to protect groundwater; and Any other information requested by the Department.