(1) Upon completion and department approval of the final report evaluating the nature and extent of contamination at a facility with an approved stipulated agreement under 75-10-750, MCA, the lead liable person under 75-10-746, MCA, may submit a claim to the department for reimbursement of the orphan's share of the cost-associated with the preparation of that report.

(2) Upon completion and department approval of the final report formulating and evaluating final remedial alternatives at a facility with an approved stipulated agreement under 75-10-750, MCA, the lead liable person under 75-10-746, MCA, may submit a claim to the department for reimbursement of the orphan's share of the cost associated with the preparation of that report.

(3) Upon completion of the department-approved remedial action plan at the facility and department approval of that completion, the lead liable person under 75-10-745, MCA, may submit a claim to the department for reimbursement of the orphan's share of the cost associated with completion of the department-approved remedial action plan.

(4) Reimbursement under (1), (2), and (3) is limited to those eligible costs, as provided for in 75-10-743(5), MCA, incurred by the lead liable person and is governed by the other provisions of 75-10-743, MCA.

(5) If the department determines the lead liable person is eligible for hardship reimbursement under 75-10-743(7), MCA, the department may reimburse the lead liable person for the orphan's share of ongoing remedial action costs but shall, at a minimum, retain the orphan's share of remedial action costs incurred prior to the date the hardship determination was made in order to ensure the completion of all required remedial actions.