(1) Upon the trial of any civil or criminal action or proceeding arising out of acts alleged to have been committed by any person while driving or in actual physical control of a vehicle while under the influence of intoxicating liquor or any drug, if the amount of alcohol in the person’s blood at the time alleged as shown by chemical analysis of his blood, breath, or other bodily substance is less than one-tenth of one percent by weight of alcohol in the person’s blood, it is evidence that may be considered with other competent evidence in determining whether the person was under the influence of intoxicating liquor or any drug.

(2) Percent by weight of alcohol in the blood shall be based upon milligrams of alcohol per 100 cubic centimeters of blood. The foregoing provisions of this section shall not be construed as limiting the introduction of any other competent evidence bearing upon the question whether the person was under the influence of intoxicating liquor or any drug.

(3) Chemical analysis of the person’s blood or breath to be considered valid under the provisions of this section or SMC 10.54.010 or 10.54.020 shall be performed according to methods approved by the state toxicologist and by an individual possessing a valid permit issued by the state toxicologist for this purpose. The state toxicologist is directed to approve satisfactory techniques or methods, to supervise the examination of individuals to ascertain their qualifications and competence to conduct such analyses, and to issue permits which shall be subject to termination or revocation at the discretion of the state toxicologist.

(4) When a blood test is administered under the provisions of RCW 46.20.308, the withdrawals of blood for the purpose of determining its alcoholic content may be performed only by a physician, a registered nurse, or a qualified technician. This limitation shall not apply to the taking of breath specimens.

(5) The person tested may have a physician, or a qualified technician, chemist, registered nurse, or other qualified person of his own choosing administer a chemical test or tests in addition to any administered at the direction of a law enforcement officer. The failure or inability to obtain an additional test by a person shall not preclude the admission of evidence relating to the test or tests taken at the direction of a law enforcement officer.

(6) Upon the request of the person who submits to a chemical test or tests at the request of a law enforcement officer, full information concerning the test or tests shall be made available to him or his attorney. (Ord. 555 § 5, 1980).