washington state statute of limitation

i've been searching the internet and calling local attorney's but i can't determine what the statute of limitation are for credit cards in washington state. The State Laws says the following codes are 6 year limits and 3 year limits, but i'm having a hard time determining where a credit card will fit under the RCW's codes... any suggestions?

scott

RCW 4.16.040
Actions limited to six years.
The following actions shall be commenced within six years:
(1) An action upon a contract in writing, or liability express or implied arising out of a written agreement.
(2) An action upon an account receivable incurred in the ordinary course of business.
(3) An action for the rents and profits or for the use and occupation of real estate.
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RCW 4.16.080
Actions limited to three years.
The following actions shall be commenced within three years:
(1) An action for waste or trespass upon real property;
(2) An action for taking, detaining, or injuring personal property, including an action for the specific recovery thereof, or for any other injury to the person or rights of another not hereinafter enumerated;
(3) Except as provided in RCW 4.16.040(2), an action upon a contract or liability, express or implied, which is not in writing, and does not arise out of any written instrument;
(4) An action for relief upon the ground of fraud, the cause of action in such case not to be deemed to have accrued until the discovery by the aggrieved party of the facts constituting the fraud;
(5) An action against a sheriff, coroner, or constable upon a liability incurred by the doing of an act in his official capacity and by virtue of his office, or by the omission of an official duty, including the nonpayment of money collected upon an execution; but this subdivision shall not apply to action for an escape;
(6) An action against an officer charged with misappropriation or a failure to properly account for public funds intrusted to his custody; an action upon a statute for penalty or forfeiture, where an action is given to the party aggrieved, or to such party and the state, except when the statute imposing it prescribed a different limitation: PROVIDED, HOWEVER, The cause of action for such misappropriation, penalty or forfeiture, whether for acts heretofore or hereafter done, and regardless of lapse of time or existing statutes of limitations, or the bar thereof, even though complete, shall not be deemed to accrue or to have accrued until discovery by the aggrieved party of the act or acts from which such liability has arisen or shall arise, and such liability, whether for acts heretofore or hereafter done, and regardless of lapse of time or existing statute of limitation, or the bar thereof, even though complete, shall exist and be enforceable for three years after discovery by aggrieved party of the act or acts from which such liability has arisen or shall arise.

[JETX]

Washington SOL's:
Open Acct.: 3 years
Written Contract:6 years
Domestic Judgment:10 years
Foreign Judgment:10 years

Your key is RCW 4.16.080(3).
A revolving credit card (no set amount, monthly changes, etc.) is an 'open account'.