This excerpt taken from the CLX 10-Q filed Apr 26, 2005.
ARTICLE 26. NOTICES
Any notice, offer or demand desired or required to be given hereunder shall be in writing and deemed given when personally delivered or sent by first class registered or certified airmail or by facsimile addressed as respectively set forth above under PARTIES, or to such other address as any party shall have previously designated by such a notice. Any notice so delivered personally shall be deemed to be received on the date of receipted delivery, any notice given by registered airmail shall be deemed to have been received 5 days after the same has been posted, and any facsimile shall be deemed to be received on the business day following the date of the facsimile.