All bulk milk tankers operating in the state of Washington must comply with the provisions of 3A standard 05-14. Additional requirements are:

(1) Trucks and trailers with remote pumps, mounted on tractor or front trailer, and a system of external hoses and/or piping may be used: Provided, That

(a) External flexible hoses meet the following requirements:

(i) Hoses are the thick walled rubber type and meet 3A standards 18-01, 62-01 and 63-01 except for pump box hoses.

(ii) Hoses are capped with a sanitary cap when not in use.

(b) Piping along the length of the trailer is of the fixed type and meets the following requirements:

(i) The pipe is stainless steel and meets the requirements of 3A standards 63-02 and 33-01. Other materials may be used if they are approved by the Milk Safety Branch of the Food and Drug Administration.

(ii) The sanitary piping is enclosed in an insulated holder and both the sanitary piping and the holder are capped with a dust tight cap when disconnected.

(c) Sanitary air that meets the requirements of 3A standard 64-04 may be used to remove residual milk from the external piping system.

(d) Any milk in the external piping system that exceeds forty-five degrees Fahrenheit is discarded.

(e) Adequate facilities must be provided at all receiving stations for the proper cleaning and sanitizing of tankers including the external lines and valves.

(2) All external valves on a tanker must be provided with a means of protection against dust, dirt, and road debris.

(a) Outlet valves must be protected by dust tight covers that will comply with 3A standard 05-14.

(b) Inlet valves and valves with attached hoses must be protected by a relatively dust tight cover. This cover may be:

(i) Stainless steel with an opening for the connection of hoses that is sealed with a flexible material that will prevent the entrance of dust, dirt, or road debris.

(ii) A flexible mounting made of rubber or other approved material that is close fitting, smooth, impervious, and easily removable for cleaning.

(iii) Any other cover for which plans have been submitted to and approved by the director.

(c) All valves not connected to hoses must have a sanitary cap and an approved dust cover on them.

(3) Markings on each truck or trailer must be sufficient to identify the owner of the truck or trailer.

(4) Cleaning and bactericidal treatment of all product contact surfaces including valves, hoses, covers, connections, appurtenances, pumps, and pump compartment of each tanker, when used, must be accomplished at least once every twenty-four hours after first use. If the tanker is not used for hauling milk for seventy-two hours after cleaning and sanitizing it must be sanitized again before it may be used for hauling milk. After sanitization each tanker must be tagged to show the date washed, place washed, and initials or signature of the person who washed the tanker. This wash tag must not be removed until the tanker is rewashed. It shall be the responsibility of the bulk milk hauler to ensure that the wash tag is present and that the tank is in fact clean prior to commencing his route.

(5) Bulk milk tankers must meet the requirements under chapter 15.130 RCW and the rules adopted thereunder for transportation of food.