response and we sent out i believe in 2009, we sent a tax information bulletin to the 26 thousand permittees in the city and county of san francisco which would not only include restaurants but liquor stores, leasing companies, banks, anything that would require a seller's permit, so that notice was sent out in 2009 so that those retailers would be aware that if you're channeled any kind of a surtax, it's going be taxable and should be included as part of your gross receipts, whether it's 4%, 7% or a 50 cent surcharge, that's part of gross receipts, in addition to sending out the notification, we have an active audit program, when we select accounts for audits, we have a full spectrum in where we cover san francisco and san mateo  county ts, it's all kinds of businesses of which restaurants would be some of them, as part of the mandatory audit program, when an auditor does a restaurant in san francisco, he is required to determine if on the sales ticket or on any kind of an invoice, there's a surcharge, if that surcharge is not taxed, then that additional surcharge becomes part of the audit