(1) Except as otherwise provided in this chapter, the office will authorize disbursement of project funds only on a reimbursable basis at the percentage identified in the project agreement after the sponsor has presented an invoice documenting costs incurred and compliance with the provisions of the project agreement.

(2) The amount of reimbursement may never exceed the cash spent on the project by the sponsor.

(3) Reimbursement shall not be approved for any donations, including donated real property.

(4) Direct payment to an escrow account of the office's share of the approved cost of real property and related costs may be made following office approval when the sponsor indicates a temporary lack of funds to purchase the property on a reimbursement basis. Prior to release of the office's share into escrow, the sponsor must provide the office with a copy of a binding agreement between the sponsor and the seller, all required documentation, and evidence of deposit of the sponsor's share, identified in the project agreement, into an escrow account.

(5) Advance payments may be made in limited circumstances only, pursuant to the policy outlined in the adopted reimbursement manual.

(6) As required by RCW 77.85.140, sponsors who complete salmon habitat projects approved for funding from habitat project lists will be paid by the board within thirty days of project completion. This means the board will issue a reimbursement within thirty days of the sponsor's completion of the billing requirements described in the board's reimbursement policy manual.