Is the pulley tight to the alternator? Does it wobble? If so, then i would try tightening the nut that holds the pulley on.
If not, then I would really make sure it is coming from the alternator. Other things in that area make noise... If indeed it's the alternator, you could try an alternator rebuild kit (personally, I have not been able to locate one) or replace it.
FLASH = 98 V6, chrome yellow, black & blue accents, 146k daily driver POWER
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