Dunno, my Mom moved from Washington about 2 years ago, so I am not aware of what changes may have been made in the law since then. All I know is that starting sometime in the mid 1990s, I was unable to order a rare steak in Anacortes, Washington. I do know that the restaurant associations were pretty upset about the law when it went into effect, and were fighting to change it. I wonder if the beef was irradiated? I will ask my sister who still lives in Seattle.
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UPDATED:
On further investigation, I found that the State of Washington amended the law several times (most recently Sept 2004, May 2005). Apparently, they allow individual restaurants to apply for a variance for dishes that are normally served raw (like tartare), if they implement a voluntary inspection program, submit scientific data that proves the food is not harmful, submit a safety plan to the State Health Department and if they do not serve a "susceptible" population. They also need to post a written warning to customers about the dangers of raw meat.
I found they also eased the regulations on steak by changing the 3 minutes at 145 degrees requirement from internal to external temperature (top and bottom). The 155 degrees internal temperature for burgers still stands .
Here is an odd section I discovered about sushi and ceviche. It requires that all fish which is served raw to be frozen solid first. Certain species of Tuna are exempt. That can't make sushi chefs happy.
[i]3-402.11 Parasite Destruction.
(A) Except as specified in ¶ (B) of this section, before service or sale in READY-TO-EAT form, raw, rawmarinated,
partially cooked, or marinated-partially cooked FISH other than MOLLUSCAN SHELLFISH shall be:
(1) Frozen and stored at a temperature of -20°C (-4°F) or below for 168 hours (7 days) in a freezer; or
(2) Frozen at -35°C (-31°F) or below until solid and stored at -35°C (-31°F) for 15 hours.
(B) If the FISH are tuna of the species Thunnus alalunga, Thunnus albacares (Yellowfin tuna), Thunnus
atlanticus, Thunnus maccoyii (Bluefin tuna, Southern), Thunnus obesus (Bigeye tuna), or Thunnus
thynnus (Bluefin tuna, Northern), the FISH may be served or sold in a raw, raw-marinated, or partially
cooked READY-TO-EAT form without freezing as specified under ¶ (A) of this section.[/i]
http://www.doh.wa.gov/ehp/sf/Pubs/FoodRule/chapter3.pdf