Oscar Henderson v. State
This text of Oscar Henderson v. State (Oscar Henderson v. State) is published on Counsel Stack Legal Research, covering Court of Appeals of Texas primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.
Opinion
An Austin police officer stopped appellant's car for speeding, and subsequently arrested appellant for driving while intoxicated. A breath test for alcohol concentration (intoxilyzer) conducted at the police station showed that appellant had an alcohol concentration of 0.116. At that time, a person with an alcohol concentration of 0.10 or more was intoxicated by statutory definition. See Act of May 29, 1993, 73d Leg., R.S., ch. 900, sec. 1.01, § 49.01, 1993 Tex. Gen. Laws 3586, 3696 (Tex. Penal Code Ann. § 49.01(2)(B), since amended).
Appellant complains of the admission of the breath test result on several grounds. In issues one and two, which are interrelated, appellant urges that the State failed to satisfy both the general prerequisites for admitting scientific evidence pursuant to Texas Rule of Evidence 702 (issue two) and the particular prerequisites applicable to breath test results (issue one).
A qualified expert may testify to scientific, technical, or other specialized knowledge if the trial court determines that such testimony will assist the trier of fact to understand the evidence or determine a fact in issue. See Tex. R. Evid. 702. The proponent of scientific or technical evidence has the burden of demonstrating by clear and convincing evidence that the evidence is both reliable and relevant. (1) See Kelly v. State, 824 S.W.2d 568, 573 (Tex. Crim. App. 1992); see also Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579, 590-92 (1993). Three criteria must be satisfied for scientific evidence to be considered reliable: (1) the underlying theory must be valid; (2) the technique applying the theory must be valid; and (3) the technique must be properly applied on the occasion in question. See Kelly, 824 S.W.2d at 573. Kelly applies to all scientific evidence offered under rule 702, including intoxilyzer test results. See Hartman v. State, 946 S.W.2d 60, 63 (Tex. Crim. App. 1997).
Appellant contends the State failed to offer any testimony regarding the first two Kelly criteria. Such testimony was not necessary. By statute, the result of a breath test for alcohol concentration is admissible at a prosecution under Penal Code chapter 49. See Tex. Transp. Code Ann. § 724.064 (West 1994); see also id. § 724.016 (manner of taking and analyzing breath specimen). The legislature has thereby recognized the validity of the theory and technique behind the intoxilyzer. See Stevenson v. State, 895 S.W.2d 694, 696 (Tex. Crim. App. 1995); Texas Dep't of Pub. Safety v. Jimenez, 995 S.W.2d 834, 838 (Tex. App.--Austin 1999, no pet.) (applying predecessor statute). As regards intoxilyzer results, the only open issue for the trial court to address under Kelly is whether the technique was properly applied on the occasion in question. See Hartman, 946 S.W.2d at 64 (Keller, J., concurring and dissenting).
Before Kelly was decided, the court of criminal appeals established a three-part predicate for the admission of an intoxilyzer test result. The State must: (1) show the machine functioned properly on the day of the test as evidenced by the running of a reference sample; (2) show the existence of periodic supervision over the machine and its operation by one who understands the scientific theory of the machine; and (3) prove the result of the test through a witness qualified to translate and interpret the result. See Harrell v. State, 725 S.W.2d 208, 209-10 (Tex. Crim. App. 1986). Clearly, if the State lays the predicate required by Harrell it also satisfies the third element of Kelly as it applies to an intoxilyzer test result. (2)
Appellant's intoxilyzer test was administered by Austin police officer Sonia Lopez, who is certified to operate the machine by the Department of Public Safety. Lopez's technical supervisor at the time of the test was Rudy Bohac, and it was he who prepared the reference sample used by Lopez to determine that the machine was functioning properly at the time appellant was tested. Bohac retired before appellant's trial and did not testify. Instead, the State called Bohac's successor as technical supervisor, Alvin Weathermon. Weathermon testified that he reviewed Bohac's records after succeeding him as technical supervisor. According to these records, Bohac examined the intoxilyzer machine at issue in this cause and prepared a fresh reference sample four days before appellant was tested. This examination showed that the machine was functioning properly. Bohac examined the machine approximately one month later and again determined that it was functioning properly. Based on his review of Bohac's records, including the record of the test administered to appellant, Weathermon was of the opinion that the intoxilyzer was functioning properly when appellant's breath was tested.
Weathermon also testified that before assuming his position as technical supervisor for the Austin Police Department, he worked in the Department of Public Safety's alcohol testing program. There, it was his responsibility to insure that all breath testing programs in south Texas, including Austin, complied with departmental regulations. Among other things, these regulations specify the qualifications for certification as a technical supervisor. See 37 Tex. Admin. Code § 19.5 (1999). These qualifications include an understanding of the scientific theory and principles of the intoxilyzer. See id. § 19.5(a)(4). While with the Department of Public Safety, Weathermon personally recertified Bohac as technical supervisor for the Austin Police Department.
Appellant urges that because Weathermon did not prepare the reference sample used by Lopez, he could not testify from personal knowledge that the reference sample was properly formulated. Appellant further argues that Weathermon could not testify to Bohac's understanding of the scientific theory underlying the intoxilyzer.
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