(1) The board of commissioners of a district with revenues of five million dollars or more in each of the preceding three years that were audited in accordance with RCW 43.09.260 may by resolution adopt a policy to issue its own warrants for payment of claims or other obligations of the district. The board of commissioners, after auditing all payrolls and bills, may authorize the issuing of one general certificate to the county treasurer, to be signed by the president of the board of commissioners, authorizing the county treasurer to pay all the warrants specified by date, number, name, and amount, and the accounting funds on which the warrants are drawn. The district may then issue the warrants specified in the general certificate.

(2) The board of commissioners of a district with revenues greater than two hundred fifty thousand dollars and less than five million dollars in each of the preceding three years that were audited in accordance with RCW 43.09.260 may upon agreement between the county treasurer and the district commission, with approval of the district commission by resolution, adopt a policy to issue its own warrants for payment of claims or other obligations of the district. The board of commissioners, after auditing all payrolls and bills, may authorize the issuing of one general certificate to the county treasurer, to be signed by the president of the board of commissioners, authorizing the county treasurer to pay all the warrants specified by date, number, name, and amount, and the accounting funds on which the warrants are drawn. The district may then issue the warrants specified in the general certificate.