OPINION
COATS, Judge.
This appeal concerns three consolidated Anchorage district court cases. Richard Cooley, Bienvenido Marine and William Thompson were each charged in two count complaints with driving while intoxicated, AMC 9.28.020, and with driving with a blood or breath alcohol level in excess of 0.10 percent, AMC 9.28.030.
In a jury tri
al, Cooley was found guilty on both counts. Juries acquitted Marine and Thompson of the driving while intoxicated charge but found them guilty on the 0.10 percent theory. Because all have raised similar challenges to the 0.10 ordinance and to the use of the breathalyzer test, their appeals have been consolidated.
We note at the outset that appellants raise two issues which we have already decided in their favor in other cases. First, they claim that the Anchorage ordinances in effect at the time they were charged were inconsistent with state law and therefore invalid under AS 28.01.010(a). In
Simpson v. Municipality of Anchorage,
635 P.2d 1197 (Alaska App.1981), we held that the Anchorage ordinances were in fact invalid as inconsistent with state law.
Second, appellants argue that the municipality’s failure to preserve a breath sample at the time of arrest for later independent analysis violated their due process rights to confront and cross-examine the evidence against them, specifically, the results of, the breathalyzer test. In the companion case to this case, also announced today, we held that under the due process clause, article I, section 7 of the Alaska Constitution, the defendants must be offered the opportunity to preserve a breath sample or offered a similar opportunity to verify the results of the breathalyzer test.
Municipality of Anchorage v. Cisneros,
649 P.2d 256 (Alaska App. 1982),
Although we realize that the holdings in
Simpson
and
Cisneros
are sufficient to dispose of these cases, we have nevertheless decided to address the other issues raised by the appellants. It is clear that these other issues will be raised again; thus we deem it appropriate to address them now so as to avoid the considerable waste of resources necessary to prepare such a case for appeal. The parties expended substantial effort in briefing and arguing this case, as well as considerable time and money in preparing a voluminous evidentiary record which included extensive expert testimony. We can see no purpose in requiring the parties and the lower courts to spend significant time, money and effort in repeating a task already done.
Appellants argue that the methods and procedures used to enforce AMC 9.28.030 operate to deny a defendant’s due process right to meaningfully cross-examine the evidence against him.
Keel v. State,
609 P.2d 555 (Alaska 1980);
Lauderdale v. State,
548 P.2d 376 (Alaska 1976). Specifically, their argument focuses on the use of the breathalyzer as a means of proving that a defendant’s blood or breath alcohol level exceeds the 0.10 limit established by AMC 9.28.030.
They argue that the breathalyzer is often inaccurate and that there is no adequate means of challenging the breathalyzer result in a court of law.
Essentially, appellants point to three general areas of breathalyzer inaccuracy.
First, they argue the breathalyzer may fail to accurately reflect current blood or breath concentrations. They assert that machine malfunction, operator error, or the influence of biological factors unique to the test subject, e.g., fever or flu, could yield inaccurately high test results. They further note that the experts testified that even when operating as designed and when not influenced by such extraneous factors, the breathalyzer is subject to a plus or minus ten-percent margin of error at the 0.10 level.
Second, appellants argue that even if the breathalyzer test result accurately reflects current blood or breath alcohol concentrations, that result may have little bearing on the alcohol concentrations existing at the time of driving. State regulations require that the subject be observed for a fifteen-minute period prior to administration of the breathalyzer, test, 7 AAC 30.020(2),
and as a practical matter, the test is generally administered thirty to sixty minutes after the subject was driving. Appellants point to variations in drinking patterns and in alcohol absorption and clearance rates, and contend that the results of a breathalyzer test administered at some point after the subject was driving may not reflect what the subject’s blood or breath alcohol concentration in fact was at the time of driving.
Third, appellants argue that the breathalyzer may inaccurately convert breath alcohol concentrations into blood alcohol concentrations.
Expert testimony established that the ratio applied in translating breath alcohol concentrations into blood alcohol concentrations served to yield an inaccurately high result in fourteen percent of the cases.
We do not dispute the appellants’ contentions in regard to these possible sources of breathalyzer test inaccuracy. We do, however, dispute their significance. Despite the shortcomings catalogued above, the evi-dentiary record supports the conclusion that the breathalyzer is fundamentally accurate in the vast majority of cases.
Furthermore, we do not believe that the use of breathalyzer test results as evidence serves to frustrate defendants’ due process right to cross-examine the evidence against them. As the Alaska Supreme Court observed in
Keel v. State,
609 P.2d at 557, even though breathalyzer test results may be admitted into evidence, that does not mean that those results are unassailable.
Breathalyzer test results, like any
other evidence, may be subject to attack and disproof. Even after the admission of the breathalyzer test results, the burden is still upon the municipality to convince the jury that the breathalyzer test is accurate and that the defendant’s blood or breath alcohol was above the prohibited level at the time of driving. Should the defendant have reason to believe that the test results inaccurately reflect his actual blood or breath alcohol concentrations, he can adequately confront the test through the usual tools which he has at his disposal in confronting any witness or evidence. He can rely on the fact that the municipality has the burden of proof, he can rely on cross examination, or he can present evidence on his own.
See Denison v. Anchorage,
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OPINION
COATS, Judge.
This appeal concerns three consolidated Anchorage district court cases. Richard Cooley, Bienvenido Marine and William Thompson were each charged in two count complaints with driving while intoxicated, AMC 9.28.020, and with driving with a blood or breath alcohol level in excess of 0.10 percent, AMC 9.28.030.
In a jury tri
al, Cooley was found guilty on both counts. Juries acquitted Marine and Thompson of the driving while intoxicated charge but found them guilty on the 0.10 percent theory. Because all have raised similar challenges to the 0.10 ordinance and to the use of the breathalyzer test, their appeals have been consolidated.
We note at the outset that appellants raise two issues which we have already decided in their favor in other cases. First, they claim that the Anchorage ordinances in effect at the time they were charged were inconsistent with state law and therefore invalid under AS 28.01.010(a). In
Simpson v. Municipality of Anchorage,
635 P.2d 1197 (Alaska App.1981), we held that the Anchorage ordinances were in fact invalid as inconsistent with state law.
Second, appellants argue that the municipality’s failure to preserve a breath sample at the time of arrest for later independent analysis violated their due process rights to confront and cross-examine the evidence against them, specifically, the results of, the breathalyzer test. In the companion case to this case, also announced today, we held that under the due process clause, article I, section 7 of the Alaska Constitution, the defendants must be offered the opportunity to preserve a breath sample or offered a similar opportunity to verify the results of the breathalyzer test.
Municipality of Anchorage v. Cisneros,
649 P.2d 256 (Alaska App. 1982),
Although we realize that the holdings in
Simpson
and
Cisneros
are sufficient to dispose of these cases, we have nevertheless decided to address the other issues raised by the appellants. It is clear that these other issues will be raised again; thus we deem it appropriate to address them now so as to avoid the considerable waste of resources necessary to prepare such a case for appeal. The parties expended substantial effort in briefing and arguing this case, as well as considerable time and money in preparing a voluminous evidentiary record which included extensive expert testimony. We can see no purpose in requiring the parties and the lower courts to spend significant time, money and effort in repeating a task already done.
Appellants argue that the methods and procedures used to enforce AMC 9.28.030 operate to deny a defendant’s due process right to meaningfully cross-examine the evidence against him.
Keel v. State,
609 P.2d 555 (Alaska 1980);
Lauderdale v. State,
548 P.2d 376 (Alaska 1976). Specifically, their argument focuses on the use of the breathalyzer as a means of proving that a defendant’s blood or breath alcohol level exceeds the 0.10 limit established by AMC 9.28.030.
They argue that the breathalyzer is often inaccurate and that there is no adequate means of challenging the breathalyzer result in a court of law.
Essentially, appellants point to three general areas of breathalyzer inaccuracy.
First, they argue the breathalyzer may fail to accurately reflect current blood or breath concentrations. They assert that machine malfunction, operator error, or the influence of biological factors unique to the test subject, e.g., fever or flu, could yield inaccurately high test results. They further note that the experts testified that even when operating as designed and when not influenced by such extraneous factors, the breathalyzer is subject to a plus or minus ten-percent margin of error at the 0.10 level.
Second, appellants argue that even if the breathalyzer test result accurately reflects current blood or breath alcohol concentrations, that result may have little bearing on the alcohol concentrations existing at the time of driving. State regulations require that the subject be observed for a fifteen-minute period prior to administration of the breathalyzer, test, 7 AAC 30.020(2),
and as a practical matter, the test is generally administered thirty to sixty minutes after the subject was driving. Appellants point to variations in drinking patterns and in alcohol absorption and clearance rates, and contend that the results of a breathalyzer test administered at some point after the subject was driving may not reflect what the subject’s blood or breath alcohol concentration in fact was at the time of driving.
Third, appellants argue that the breathalyzer may inaccurately convert breath alcohol concentrations into blood alcohol concentrations.
Expert testimony established that the ratio applied in translating breath alcohol concentrations into blood alcohol concentrations served to yield an inaccurately high result in fourteen percent of the cases.
We do not dispute the appellants’ contentions in regard to these possible sources of breathalyzer test inaccuracy. We do, however, dispute their significance. Despite the shortcomings catalogued above, the evi-dentiary record supports the conclusion that the breathalyzer is fundamentally accurate in the vast majority of cases.
Furthermore, we do not believe that the use of breathalyzer test results as evidence serves to frustrate defendants’ due process right to cross-examine the evidence against them. As the Alaska Supreme Court observed in
Keel v. State,
609 P.2d at 557, even though breathalyzer test results may be admitted into evidence, that does not mean that those results are unassailable.
Breathalyzer test results, like any
other evidence, may be subject to attack and disproof. Even after the admission of the breathalyzer test results, the burden is still upon the municipality to convince the jury that the breathalyzer test is accurate and that the defendant’s blood or breath alcohol was above the prohibited level at the time of driving. Should the defendant have reason to believe that the test results inaccurately reflect his actual blood or breath alcohol concentrations, he can adequately confront the test through the usual tools which he has at his disposal in confronting any witness or evidence. He can rely on the fact that the municipality has the burden of proof, he can rely on cross examination, or he can present evidence on his own.
See Denison v. Anchorage,
630 P.2d 1001 (Alaska App.1981).
We conclude, therefore, that the appellants’ right to cross examine the evidence against them has not been infringed.
See Commonwealth v. Arizini,
277 Pa.Super. 27, 419 A.2d 643, 650 (1980);
Slagle v. State,
570 S.W.2d 916, 919 (Tex.Cr.App.1978).
In a related point, appellants contend that AMC 9.28.030(A)
creates an unconstitutional presumption. Under that ordinance, a basic element of the charge is that the defendants’ blood or breath alcohol concentration exceeded 0.10 at the time of driving. Appellants argue that the ordinance creates a presumption that the blood or breath alcohol concentration at the time a defendant is given the breathalyzer test is the same as it was at the time of driving. We disagree. We do not interpret the ordinance as requiring the inference that the blood or breath alcohol concentrations existing at the time of driving are the same as those indicated by a breathalyzer test administered at some later time. However, the breathalyzer test result is evidence which is relevant to show the amount of alcohol actually in the subject’s blood or breath at the time of driving. Under this ordinance, we believe the prosecution has the burden of making the connection between the later test and the alcohol level at the time of driving. Whether the prosecution successfully makes this connection is ultimately a question for the finder of fact. We therefore reject the appellants’ claim that the ordinance creates an unconstitutional presumption.
These cases are REVERSED.