A permit applicant shall furnish proof of financial responsibility to ecology by one of the following:

(1) Copy of insurance policy or binder for the operator;

(2) A current balance sheet showing sufficient assets to demonstrate financial responsibility;

(3) A bond for safe performance; or

(4) Other information the applicant may provide to ecology, in writing, if the alternate documents contained in subsections (1) through (3) of this section, are not feasible or available. If other information is provided, the applicants must explain the reason the documents listed in subsections (1) through (3) of this section are not provided.