delivered the Opinion of the Court.
T 1 In this interlocutory appeal pursuant to C.A.R. 4.1, the People seek review of the trial court's order suppressing the results of a
I. Facts and Procedural History
T2 At around 1 am. on November 18, 2018, an off-duty Colorado State University police officer who lived in the Dry Creek neighborhood of Fort Collins called the police to report a noise complaint. He told the police that a man and a woman were riding around on an all-terrain vehicle (ATV) and that alcohol was involved. He said thаt the man was driving the ATV. Officer Braun arrived on the scene and attempted to make contact with the ATV. Upon noticing the officer, the driver of the ATV sped off in another direction. The vehicle hit a roundabout, rolled, and ejected the driver and passenger. Both the man, who was identified as Ackerman, and the woman sustained serious injuries. Ackerman was transported to the Medical Center of the Rockies, while the woman, went to Poudre Valley Hospital.
{ 3 Officer Tower, who is the supervisor of the traffic unit and coordinates the Collision Reconstruction and Scene Handling (CRASH) team, was notified about the accident around 1:30 am. He asked Sergeant Clow, who was already at the seene, for his assessment and learned that Ackerman and the woman were seriously injured and transported to different hospitals. Officer Tower then directed an officer to go to each hospital. Officer Nace went to Poudre Valley Hospital, where the woman was pronounced dead on arrival. Officer Beaumont traveled to the Medical Center of the Rockies to "monitor [Ackerman's] situation."
14 Because the accident resulted in serious bodily injury and death, and included the driver eluding an officer, Officer Tower enacted "critical-incident protocol." The protocol dictated that the police perform both criminal and internal investigations. The internal investigation required performing interviews to ensure no police wrongdoing.
T5 Officer Tower arrived on the scene around 2:20 am. and received a "walk-through" from Sergeant Clow. He testified that he then explained the situation to Offiсer Jurkofsky, who arrived soon after, and requested that Officer Jurkofsky gather information and begin writing an affidavit for a warrant to order blood drawn from Acker-man. While Officer Jurkofsky gathered information, Officer Beaumont called from the hospital and informed the investigators at the scene that Ackerman was unconscious and was in preparation for a computerized axial tomography (CAT) sean and "possibly surgery." After discussing the status of the investigation and the possibility of obtaining a warrant, Officer Tower determined that he could not get a warrant before Ackerman became unavailable. As a result, he ordered Officer Beaumont to obtain a blood draw, which hospital personnel performed around 3:80 a.m.
T6 After the first blood draw, Officer Jur-kofsky continued to gather information to complete the affidavit for the warrant, which the police submitted to a magistrate via an electronic, expedited warrant system. A magistrate signed the warrant at 4:87 a.m., which authorized two additional blood draws to be carried out so that the three total blood draws were each an hour apart. Ackerman, though, was in surgery at the time, which delayed the blood draws. The two additional blood draws were not performed until 5:18 and 6:25 a.m.
18 At the suppression hearing, the trial court found that the police had probable cause tо proceed with the first blood draw. It noted that there was aleohol involved in a fatal accident, that Ackerman was the driver of the ATV, and that a blood test would produce evidence of Ackerman's intoxication level. Nevertheless, the trial court found that no exigent cireumstances existed that made obtaining a warrant impractical. It reasoned that Officer Tower had "sufficient time to get a warrant" through the expedited warrant system because there were approximately two hours between the accident and the first blood draw and an hour between the officer's arrival on the scene and the first blood draw. It stated that the police's failure to obtain this warrant was due to "a breakdown in procedures" and "didn't really have anything to do with the surgery." Thus, the court granted the motion to suppress the results from the first blood draw. As to the second and third blood draws, the trial court, after reviewing the affidavit for probable cause for a search warrant, found that the totality of the cireumstances supported a finding of probable cause thаt Ack-erman committed a crime and denied the motion to suppress the results from those blood draws.
9 In response, the People filed this interlocutory appeal 2 and argue that the trial court erred in finding that the police lacked exigent circumstances that would justify an involuntary, warrantless blood draw.
II. Standard of Review
110 A trial court's suppression order presents a mixed question of law and fact. See People v. Munoz-Gutierrez,
III. Analysis
111 The issue is whether the trial court erred in suppressing the results from Acker-man's first blood draw when it concluded that the police lacked exigent circumstances that would justify the involuntary, warrantless blood draw. To resolve this issue, we first examine the Fourth Amendment's prohibition against unreasonable searches and seizures. We next articulate when, under the totality of the cireumstances, exigent cireum-stances justify an involuntary, warrantless blood draw under the Fourth Amendment.
A. The Law of Warrantless Blood Draws
1 12 The Fourth Amendment to the United States Constitution and article II, section 7 of thе Colorado Constitution protect a person's right to be free from unreasonable searches and seizures. U.S. Const. amend. IV; Colo. Const. art. II, § 7; see, e.g., People v. Hopkins,
{183 In Schmerber, the United States Supreme Court articulated four criteria for determining when involuntary, warrantless blood draws may satisfy the Fourth Amendment in cases involving alcohol-related driving offenses.
First, there must be probable cause for the arrest of the defendant on an aleohol-relat-ed driving offense. Second, there must be a clear indication that the blood sample will provide evidence of the defendant's level of intoxication. Third, exigent cireum-stances must exist which make it impractical to obtain a search warrant. Fourth, the test must be a reasonable one and must be conducted in a reasonable manner.
The second and fourth criteria are usually established in these cases. Blood draws are "a highly effective means of determining the degree to which a person is under the influence of alcohol." Schmerber,
B. Exigent Circumstances
€114 The United States Supreme Court discussed exigent circumstances as they relate tо involuntary, warrantless blood draws in Schmerber. In that case, a police officer directed a physician to take a blood sample from the defendant, who was arrested at the hospital while he received treatment for injuries he had sustained while driving in a vehicle. Schmerber,
1 15 We applied Schmerber and the Sutherland test in later blood draw cases. In People v. Milhollin,
116 In addition, we have adopted the totality-of-the-cireumstances approach as applied in Schmerber in a variety of cases discussing when exigent cireumstances justify an involuntary, warrantless search,. See People v. Drake,
C. Apblication
117 In our application, we follow the four criteria in the Sutherland test to determine when an involuntary, warrantless blood. draw was justified under the Fourth Amendment based on exigent cireumstances. In this case, three of the four criteria are not in dispute on appeal, The trial court found that probable cause existed and that the blood sample would show Ackerman's level of intoxication. Neither party disputes that the blood draw itself was conducted reasonably. Thus, only the third criterion-exigent circumstances-is at issue in this case. -
18 In finding that exigеnt cireumstances did not exist, the trial court relied on the facts that a system of electronic warrants was in place and that there was at least an hour between Officer Tower's arrival on the seene and the first blood draw. The trial court discounted the fact that the police learned of Ackerman's impending surgery shortly before it was to begin and instead characterized the delay in obtaining a warrant as a breakdown of communication between officers. With the benefit of hindsight, the court knew approximately when Ackerman was unavailable for a blood draw because he underwent surgery. Had the police known when they started the investigation that Ackerman would go into surgery at a specific time and be unavailable for a
1 19 In our analysis, we look at the totality of the cireumstances to determine whether exigent cireumstances made it impractical for police to obtain a warrant without significantly undermining the efficacy of the search. - Important considerations in this analysis include the chronology of events, including when the police learned of Ackerman's potential surgery; the extensiveness of the police investigation; the location of the defendant; and the availability of an expedited warrant process.
120 The trial court's factual findings on the chronology of the events leading up to the first blood draw show that Officer Tower had to make a quick decision based on the available information to order a blood draw. Officer Tower arrived at the accident site at approximately 2:20 am. and ordered the blood draw approximately an hour later. Before and after he arrived on seene, he gathered information from Sergeant Clow about the accident, including that an ATV had crashed, "alcohol may [have been] involved," a female passenger was in serious condition and could die, and the male driver was seriously hurt. Officer Tower sent officers to the hospitals where the passenger and Ack-erman were transported. Because a blood draw from Ackerman would be needed for evidence, Officer Tower "had] to make some decisions ... fairly quickly," and "one of the things Officer Tower did® conclude very quickly was that a warrant should be obtained." The affidavit for a warrant was not finalized before Offiсer Tower learned that Ackerman was going into surgery, so Officer Tower ordered the first blood draw, which occurred at approximately 8:80 a.m. Acker-man then had surgery at some point between the first blood draw and the second blood draw, which was taken at 5:18 a.m.
{121 These facts demonstrate exigent circumstances. Officer Tower knew that Ack erman's blood-alcohol content would be essential evidence because his investigation led him to believe that alcohol was involved in the accident and that Ackerman was the driver of the crashed ATV. To obtain a blood sample, Officer Tower tried "to get [a] warrant in a timely manner." Nevertheless, the police had not completed writing the affidavit by the time Officer Tower was informed that Ackerman was headed for a CAT sean and surgery. At the time he ordered the first blood draw, it was unclear how long surgery would last. Because the "percentage of alcohol in the blood begins to diminish shortly after drinking stops," Schmerber,
122 Additionally, similar to the situations in Milkollin, Shepherd, and Schall, where the defendants were transported to the hospital for medical procedures and the officers were unable to perform sobriety tests, Ack-erman was transported to the hospital for unknown injuries prior to administration of any field sobriety tests or even police observаtion, and the only way to determine Acker-man's blood-alcohol content was a blood test. Thus, the trial court's conclusion that Officer Tower's decision to order the blood draw "didn't really have anything to do with the surgery" is not supported by the chronology of events. In fact, the surgery played a crucial role in the decision because it created an imminent loss of access to Ackerman and the potential destruction of critical evidence.
[23 In addition, the police's investigation and Ackerman's move to the hosрital delayed the officers' ability to obtain a search warrant. Like the officers in Milhollin, Shepherd, and Schall, who were tasked with investigating the accident scenes while the suspects were at the hospital, Officer Tower and his staff remained at the accident seene when Ackerman went to the hospital. Here, the police were tasked with investigating a
4 24 Moreover, even though the police had to perform all those tasks, Officer Tower initiated steps to obtain a warrant for a blood draw before changed cireumstances forced his hand. On his way to the accident scene, Officer Tower asked that an officer meet Ackerman at the hospital and monitor his situation. When Officer Tower next decided that a blood draw was necessary, he asked Officer Beaumont, who had met Ackerman at the hospital, to complete the affidavit for a warrant. Officer Beaumont, though, lacked the necessary information to complete the affidavit, so Officer Tower instructed Officеr Jurkofsky, who was at the accident scene, to write the affidavit instead. While Officer Jurkofsky was gathering information and writing the affidavit for the warrant, Officer Tower learned that Ackerman was about to receive a CAT sean and possibly undergo surgery. Faced with the possibility of Ack-erman becoming unavailable for an unknown period of time and having his blood tainted - by medical procedures, it was reasonable for Officer Tower to believe that he needed to proceed with a blood draw to preserve the evidence. See Schmerber,
125 Finally, although an expedited warrant process was available, the police had only two hours after the accident occurred and about an hour once Officer Tower had arrived on scene to complete all оf their tasks and write the affidavit Courts expect an affidavit describing probable cause in support of a warrant to be complete and accurate. The trial court might have been correct that in the abstract there was enough time for police to obtain a warrant, but this is a conclusion reached with the benefit of hindsight. Here, at the time of the first blood draw, the officers harbored a reasonable concern that Ackerman's impending surgery might compromise the integrity of critical evidence. The existencе of an expedited warrant process did not render the officers' course of action unreasonable.
126 We conclude that, when considering the totality of the circumstances, exigent circumstances showed that it would have been impractical for the police to obtain a warrant without significantly undermining the efficacy of the search. Although an expedited warrant process was available, the imminent unavailability of Ackerman for a blood sample presented circumstances that showed the police had a reasonable belief that evidence pertaining to Ackerman's blood-aleohol content might have been altered or destroyed by the impending medical procedures. Therefore, exigent circumstances justified the involuntary, warrantless blood draw in this case. *
IV. Conclusion
127 For the foregoing reasons, we hold that exigent cireumstances existed where the police were still investigating the seene of the crime and were not finished preparing the affidavit for a warrant when they learned that hospital personnel were taking the un
Notes
. An analysis of the sample from the first blood draw showed that Ackerman's blood-alcohol content was .190. The second and third blood draws showed a blood-alcohol content of .140 and .113, respectively.
. Section 16-12-102(2), C.R.S. (2014), allows the prosecution to file an interlocutory appeal after the trial court grants a motion to suppress evidence if the prosecution "certifies to the judge who granted such motion and to the supreme court that the appeal is not taken for the purposes of delay and the evidence is a substantial part of the proof of the charge pеnding against the defendant." The People here filed such a certificate. In addition, the People indicated in their Notice of Interlocutory Appeal that the results of the first blood draw are a substantial part of their proof of the charges against Ackerman. The blood draw was taken prior to when Acker-man underwent significant medical treatment and thus would provide the closest approximation of Ackerman's blood-alcohol content at the time of the accident. The People also anticiрate using a forensic toxicologist as an expert witness. This expert will perform a retrograde extrapolation based on the results of at least three blood draws to approximate Ackerman's blood-alcohol content at the time of the accident. The inability to reference the results of the first blood draw would negatively affect the expert's analysis.
. This case does not involve the debate from Missouri v. McNeely, - U.S. --,
