Forrester v. Sierra at Tahoe, 2017 Cal. App. Unpub. LEXIS 5204

Forrester v. Sierra at Tahoe, 2017 Cal. App. Unpub. LEXIS 5204

Dominique Forrester, Plaintiff and Appellant, v. Sierra at Tahoe, Defendant and Respondent.



2017 Cal. App. Unpub. LEXIS 5204

July 27, 2017, Opinion Filed


SUBSEQUENT HISTORY: Review denied by Forrester v. Sierra at Tahoe, 2017 Cal. LEXIS 7927 (Cal., Oct. 11, 2017)

PRIOR HISTORY: [*1] Superior Court of El Dorado County, No. PC20120138.

CORE TERMS: snowmobile, collision, ski, inherent risk, snowboarding, sport, checklist, toboggan, driver, ski resort, skiing, unreasonably, assumption of risk, slope, secondary, emergency, resort, ski area, skier, hit, snowboarder, patroller, patrol, risks inherent, instructional error, lift, discarded, siren, suppression, tower

JUDGES: Duarte, J.; Butz, Acting P. J., Mauro, J. concurred.

OPINION BY: Duarte, J.


Plaintiff Dominique Forrester was injured while snowboarding at defendant ski resort Sierra-at-Tahoe (Sierra) on March 7, 2010. He claimed he was hit by a toboggan, that in turn was being towed by a snowmobile, while on a beginner slope. The trial court found assumption of the risk applied to the claim, and the case went to the jury to answer the question of whether Sierra unreasonably increased the risk to Forrester above that already inherent in the sport of snowboarding. By a vote of 10 to 2, the jury answered “no.”

On appeal, plaintiff contends the trial court erred in ruling that primary assumption of the risk applied to this case, and instructing the jury accordingly. Plaintiff argues a collision with a snowmobile is not an inherent risk of snowboarding. He further contends the court incorrectly instructed the jury on secondary assumption of the risk, and erred in refusing to instruct on the willful suppression of evidence.

As we will explain, this case is unusual among liability cases in general because the very existence of the alleged accident–the collision itself–was [*2] and remains in dispute. We first conclude that unwanted contact with a snowmobile (here encompassing a towed toboggan), on a ski slope at a ski resort, is indeed an inherent risk of snowboarding. Although Forrester argues the particular alleged circumstances of the operation of the snowmobile on the day of the incident took the collision outside the boundaries of inherent risk, that issue was tendered to the jury and the jury found Sierra did not unreasonably increase the risks already inherent in snowboarding

We assume instructional error on secondary assumption of the risk but find no prejudice, and conclude that the evidence did not support an instruction on willful suppression of the evidence.

Accordingly, we affirm the judgment.


The Alleged Accident

On Sunday, March 7, 2010, Forrester met his high school friend, Franklin Medina, for a day of snowboarding at Sierra. That day was the busiest of the year, with about 6,370 people at the resort. Forrester described himself as an intermediate snowboarder who does not perform jumps. He did not wear ear buds or ear phones while snowboarding and did not recall ever seeing a snowmobile in a ski area before that [*3] day.

At about 3:30 or 4:00 p.m., Forrester was filming Medina doing jumps. After the last jump, Medina snowboarded down the run to wait for Forrester. The bottom area of the ski run is known as Broadway; it is a beginner run near the teaching area and close to the lodge.

According to Forrester, as he began to snowboard down Broadway, he heard someone yell “hey.” He tried to turn around and was hit in the back of the legs. He went airborne and landed on his bottom and then hit his head. His goggles cut his face. He was hurt and dizzy. The snowmobile was 30 yards away when Forrester first saw it, and the driver “took off.” Forrester thought the driver’s jacket was orange or red, but he was not sure. He assumed only ski patrollers, who wear orange-red jackets, operated snowmobiles. He thought the snowmobile driver was wearing a beanie. Forrester did not hear the snowmobile. After the collision, Forrester slid down the mountain, and some other snowboarders asked if he was okay. He did not realize his equipment was broken until he later responded to special interrogatories.

Medina claimed he saw the incident, and that the snowmobile was in front of Forrester’s path and pulling a toboggan. [*4] He saw the toboggan clip Forrester’s feet and “take him out.” The snowmobile was going two or three times faster than Forrester. Forrester took his equipment off and walked down the mountain. Medina claimed the driver of the snowmobile was wearing a black and purple vest like the ones worn by terrain park employees (rather than the orange and red jacket described by Forrester). Medina did not see any lights on the snowmobile and did not notice a flag, nor did he hear a siren.

Forrester did not report the accident, but tried to “walk off” the injury. On the way home Forrester and Medina discussed that Forrester had been hit and decided they should call Sierra. Forrester called just after 5:00 p.m. and got an answering machine. Forrester began vomiting and they stopped in Placerville where Medina took pictures of his face. Medina drove Forrester home.

The next day, Monday, Forrester hurt all over his body, including a bad headache. He went to his doctor who ordered a CT scan, the results of which were normal. Over the next few days, Forrester’s back began to hurt. He was diagnosed with a concussion and a whiplash back injury. Forrester was later diagnosed with disc degeneration with a [*5] prognosis of ongoing pain.

Reporting the Accident

Forrester called Sierra again on Monday morning. He was told there was no one with whom he could discuss the incident and to call back on Wednesday. He called Wednesday and spoke with Evan MacClellan, the risk manager. MacClellan completed an incident report based on the phone call. The report described the injury as occurring at the bottom of Broadway near the terrain park. The report described that Forrester was hit by a “snowmobile (patroller),” got up after the incident, and did not report it. On the way home he started to vomit and went to the hospital the next day. The report listed Medina as a witness and included his telephone number.

Forrester contacted an attorney the same day he spoke with MacClellan. Forrester sent MacClellan a written report, in which he stated he “was involved in a collision with a Sierra Ski Patrol Officer (Ski Patroller) whom [sic] was driving a snow mobile, towing a stretcher. . . . The Ski Patroller was apparently attempting to cross from my left, which was behind me (I have a ‘regular’ board stance), across my face, to the right of me when he collided into me from my blind side. As a result I flew over [*6] him and crashed very hard into the mountain. I suffered a head injury, as well as whiplash, and subsequently blacked out for a short period of time.” The statement continued that Forrester did not see the “patroller” and heard no sirens; he heard only a brief “hey” right before the impact. His friend Medina had witnessed the collision and could not believe it; other snowboarders asked if Forrester was okay, but the ski patrol did not.

MacClellan spoke with the ski patrol and terrain park employees about Forrester’s claim. None of the ski patrollers on duty that day or others with whom they had spoken recalled any accident or collision. Both MacClellan and the general manager, John Rice, were suspicious of the claim; in 37 years in the ski industry, Rice had never seen a report made days after the incident. MacClellan did not call Medina, although Forrester had identified him as a witness. MacClellan could not determine that the accident actually took place. He first learned that Forrester claimed the collision was with a towed toboggan rather than the snowmobile itself after Forrester’s deposition.

The Lawsuit and Trial

Forrester brought suit against Sierra for general negligence and [*7] premises liability. The complaint stated: “Included in the Cause of Action for General Negligence are Claims for Breach of Statutory Duty; Negligence Per Se; Gross Negligence and/or Reckless Conduct; and/or Common Carrier Liability.” Forrester took some theories of liability “off the table” and the trial court granted defendant’s motion for nonsuit as to others. As we explain in more detail, post, the matter was submitted to the jury as an assumption of the risk case, with the jury asked to determine whether Sierra unreasonably increased the inherent risks of snowboarding

Snowmobile Evidence

Sierra requires its snowmobile drivers to follow a safety checklist and check lights, brakes, and other functions before a snowmobile is taken out. The checklist is a written form detailing the items to be checked and the name of the person taking out the snowmobile. The checklist is discarded on a daily basis unless an entry triggers a need for snowmobile maintenance. Due to this practice of discarding the checklist daily, no attempt was made to find the checklists for March 7, and the driver of the snowmobile allegedly involved in the accident was never found. At trial, Sierra stipulated that anyone [*8] driving a snowmobile at the resort that day would have been employed by Sierra. The checklist would not necessarily reveal the identity of the driver of the snowmobile in any event, because once the snowmobile is checked out others may use it without completing a new checklist. Sierra maintains no record showing who is using a snowmobile at a particular time on a specific date.

A snowmobile is a loud machine; its sound is comparable to a motorcycle or lawnmower. The flashing lights are always on if the snowmobile is running, but the siren can be turned on and off. It is against Sierra’s policy to operate a snowmobile without a siren when guests are present. The snowmobile has an attached fiberglass pole with a flag atop, to aid in visibility. March 7, 2010, was a peak day and there was a blackout on the use of snowmobiles in the ski areas except for emergencies. Rice defined emergencies as ski patrol rescue, lift evacuation, a fire or gas leak on the hill, and to carry law enforcement to an altercation. There were no documented emergencies the day of the incident. MacClellan testified that with 6,000 people on the ski slopes, it would be “virtually impossible” to drive a snowmobile [*9] through the Broadway area.

The ski patrol uses orange toboggans for rescue, which are stored in different locations on the mountain and used to transport injured guests. Patrollers take them uphill by chair lift or by snowmobile. Snowmobiles are rarely used to take a toboggan down the mountain; usually a patroller skis them down. Snowmobiles do not tow injured guests in a toboggan.

Plaintiff’s Experts

In addition to medical experts, plaintiff called a ski safety consultant and an accident reconstructionist. Richard Penniman testified as an expert on ski area mountain operations. He testified it was below industry standard to have a snowmobile on the ski slopes when a large number of people are present. On a run like Broadway that is designed for beginners, it was very dangerous to have anything present other than skiers and snowboarders. It was below the industry standard to use the Broadway area as a snowmobile route. Penniman added snowmobiles are only a convenience and a ski resort can operate without them. He conceded, however, that it was standard practice for ski areas to use snowmobiles and agreed they were extremely useful in an emergency where the risk they create might be worth [*10] it. He agreed with the policy of Sierra-at-Tahoe not to use snowmobiles on busy days except in the case of an emergency. In Penniman’s opinion, Sierra’s conduct in operating a snowmobile the day of the incident increased the risk of injury to skiers and snowboarders.

Jesse Wobrock, an accident reconstructionist and bioengineer, prepared an animation of the accident. He testified the accident had “an injury mechanism for both the lumbar spine and the traumatic brain injury.” The damage to Forrester’s left binding was consistent with the height of the toboggan, as was the orange color transfer on the binding. Wobrock testified the physical evidence corroborated the eyewitness testimony. In his opinion, the snowboard went between the tread of the snowmobile and the toboggan; the toboggan ran over the snowboard.

Defense Case

John Gardiner, a forensic engineer and biomechanic, testified for the defense. He opined there was neither consistent testimony nor sufficient physical evidence to conclude what occurred that day. Gardiner testified that if Forrester’s left binding made contact with a toboggan, the contact occurred at the rear portion of the toboggan. If the contact had been near the [*11] front of the toboggan, the snowboard would have hit the treads of the snowmobile and caused damage; there was no evidence of damage to the front of the snowboard. In Gardiner’s opinion, the force involved in Forrester’s fall would not have caused a lumbar disc injury and a concussion. Gardiner also testified that Medina’s view of the accident would have been obstructed by the snowmobile and its driver and that Wobrock’s animation of the incident was inconsistent with the laws of physics and Forrester’s testimony.

The defense pointed out the many inconsistencies between Medina’s deposition and his trial testimony, such as where he dropped off Forrester, whether Forrester wore a helmet, Forrester’s level of skill on a snowboard, the time they finished snowboarding, and whether Medina saw the snowmobile before the collision. Medina had changed his story only after talking to Forrester. The defense argued the differences between the testimony of Medina and Forrester as to the color of the snowmobile, the clothing of the driver, the location of the accident, and the timing showed that Forrester failed to carry his burden of proof as to what happened. The defense questioned how Forrester [*12] could fail to see or hear the snowmobile and offered three possibilities: (1) the collision had not happened; (2) Forrester was not paying attention; or (3) Forrester saw the snowmobile, but not the toboggan and tried to cut behind. The defense argued number three was the most reasonable and Forrester did not report the accident because he felt it was his fault.


As relevant here, the court instructed the jury as follows:

“[CACI No.] 410. Dominique Forrester claims he was harmed while participating in snowboarding at the snow — at the Sierra at Tahoe Ski resort. To establish this claim Dominique Forrester must prove all of the following:

“1. That Sierra at Tahoe was the owner of the ski resort and that its employee was operating the snowmobile in issue in this case. Sierra at Tahoe admits that it is the owner of the ski resort and only its employee would have had access to and would have been operating a snowmobile on the ski resort.

“2. Dominique Forrester must also prove that Sierra at Tahoe unreasonably increased the risk to Dominique Forrester over and above those inherent in snowboarding;

“3. And Dominique Forrester must prove that Dominique Forrester was harmed; and lastly [*13]

“4. That Sierra at Tahoe’s conduct was a substantial factor in causing Dominique Forrester’s harm.

“[Modified CACI No.] 405. Sierra at Tahoe claims that Dominique contributed to his harm. To succeed on this claim, Sierra at Tahoe must prove the following:

“1. That Dominique Forrester assumed the risks that led to his injury; and

“2. That Dominique Forrester’s assumption of those risks was a substantial factor in causing his harm.

“If Sierra at Tahoe proves the above, Dominique Forrester’s damages are reduced by your determinations of the percentage of Dominique Forrester’s responsibility. I will calculate the actual reduction.”

Verdict and Motion for New Trial

During deliberations, the jury asked for a definition of “unreasonable” and to have Rice’s testimony about reports of emergencies that day reread. With the parties’ approval, the court responded to the first request as follows: “‘Unreasonable’ – is conduct that is contrary to conduct that a prudent person would exercise in the same or similar circumstances e.g. conduct that is careless, irrational, foolish, unwise, senseless, immoderate, exorbitant or arbitrary under the circumstances.”

By a vote of 10 to 2, the jury found Sierra did [*14] not unreasonably increase the risks to Forrester over and above those inherent in snowboarding in a ski area. Because the jury’s answer to this first question was “no,” it did not answer any additional questions contained in the verdict forms.

Forrester moved for a new trial, contending assumption of the risk did not apply to the case, there were evidentiary errors, and the court erred in not instructing on suppression of evidence. The court denied the motion.1

1 The record does not contain an order denying the motion. Under Code of Civil Procedure section 660, if there was no order, the effect is a denial of the motion.



Assumption of the Risk

A. The Law

“Primary assumption of risk is a complete bar to recovery. It applies when, as a matter of law, the defendant owes no duty to guard against a particular risk of harm.” (Gregory v. Cott (2014) 59 Cal.4th 996, 1001, 176 Cal. Rptr. 3d 1, 331 P.3d 179.) “Primary assumption of risk occurs where a plaintiff voluntarily participates in a sporting event or activity involving certain inherent risks. For example, an errantly thrown ball in baseball or a carelessly extended elbow in basketball are considered inherent risks of those respective sports.” (Wattenbarger v. Cincinnati Reds, Inc. (1994) 28 Cal.App.4th 746, 751, 33 Cal. Rptr. 2d 732.)

“The primary assumption of risk doctrine rests on a straightforward policy foundation: the need to avoid chilling vigorous participation in or sponsorship of recreational activities by imposing a tort duty to eliminate or [*15] reduce the risks of harm inherent in those activities. It operates on the premise that imposing such a legal duty ‘would work a basic alteration–or cause abandonment’ of the activity.” (Nalwa v. Cedar Fair, L.P. (2012) 55 Cal.4th 1148, 1156, 150 Cal. Rptr. 3d 551, 290 P.3d 1158.) “[U]nder the primary assumption of risk doctrine, operators, sponsors and instructors in recreational activities posing inherent risks of injury have no duty to eliminate those risks, but do owe participants the duty not to unreasonably increase the risks of injury beyond those inherent in the activity. (Id. at p. 1162.)

“Snowboarding is a classic example of a sport that requires participants to assume considerable risks.” (Vine v. Bear Valley Ski Co. (2004) 118 Cal.App.4th 577, 603, 13 Cal. Rptr. 3d 370 (Vine).) Courts have recognized many risks inherent in skiing and snowboarding. “Those risks include injuries from variations in terrain, surface or subsurface snow or ice conditions, moguls, bare spots, rocks, trees, and other forms of natural growth or debris. They also include collisions with other skiers, ski lift towers, and other properly marked or plainly visible objects and equipment.” (Lackner v. North (2006) 135 Cal.App.4th 1188, 1202, 37 Cal. Rptr. 3d 863.)

Whether the assumption of risk doctrine applies in a particular case is a question of law.”2 (Amezcua v. Los Angeles Harley-Davidson, Inc. (2011) 200 Cal.App.4th 217, 227, 132 Cal. Rptr. 3d 567.)

2 Although Forrester recognizes the question of whether assumption of the risk applies is a question of law reviewed de novo, he devotes a considerable portion of his briefing to arguing the trial court’s two analyses, first before trial and then on the motion for a new trial, were incorrect. “In reviewing a trial court’s decision, we review the result, not the reasoning.” (Florio v. Lau (1998) 68 Cal.App.4th 637, 653, 80 Cal. Rptr. 2d 409.)

B. Application to this Case

As we noted earlier, this case is unusual among liability cases in general because [*16] the collision itself was in dispute. Because the jury was not asked to make any preliminary factual findings, we cannot even assume that it found a collision occurred. We know only that the jury found Sierra did not unreasonably increase the inherent risk of snowboarding by its conduct on the day in question–whatever its conduct was found to be. With this in mind, we turn to Forrester’s first claim of error.

Forrester contends a collision with a snowmobile is not an inherent risk of snowboarding. He argues that although some collisions–such as with trees or other skiers or snowboarders–are inherent risks, the line should be drawn at a collision between an individual and a motorized vehicle. He asserts assumption of the risk has no role in the circumstances he claims were present here: an unmarked snowmobile with no lights, siren or flag, operated by a non-safety employee on a busy beginner slope, contrary to the safety policies of the ski resort.

Sierra counters that the circumstances Forrester claims were present here, outlined immediately above, would have unreasonably increased the risks undertaken by Forrester had the jury found the circumstances were as Forrester alleged. Sierra [*17] argues that it is apparent from the jury’s “no” vote that it found circumstances more closely aligned to those alleged by the defense, such as the absence of any collision (and even the absence of any snowmobile) whatsoever and other facts favorable to Sierra.

We first address the threshold question of whether unwanted contact with a snowmobile is, in general, an inherent risk of snowboarding. We conclude that it is.

On at least two occasions, this court has found a collision with resort equipment at a ski resort to be an inherent risk of the sport.

In Connelly v. Mammoth Mountain Ski Area (1995) 39 Cal.App.4th 8, 45 Cal. Rptr. 2d 855 (Connelly), the plaintiff collided with an unpadded ski lift tower while skiing. In affirming summary judgment for the defendant, we found this risk was inherent in the sport, and the obvious danger of the tower served as its own warning. (Id. at p. 12.) In concluding that contact with the tower was an inherent risk of the sport, the Connelly court relied on Danieley v. Goldmine Ski Associates, Inc. (1990) 218 Cal.App.3d 111, 266 Cal. Rptr. 749, where a skier collided with a tree. Danieley, in turn, relied on a Michigan statute that set forth certain inherent risks of skiing, including both trees and “‘collisions with ski lift towers and their components'” along with properly marked or plainly visible “‘snow-making or snow-grooming [*18] equipment.'” (Id. at p. 123.) “[B]ecause the Michigan Ski Area Safety Act purports to reflect the pre-existing common law, we regard its statutory pronouncements as persuasive authority for what the common law in this subject-matter area should be in California.” (Ibid.)

In Souza v. Squaw Valley Ski Corp. (2006) 138 Cal.App.4th 262, 41 Cal. Rptr. 3d 389 (Souza), a child skier collided with a plainly visible aluminum snowmaking hydrant located on a ski run. Following Connelly, we affirmed summary judgment for the defendant, finding the snowmaking hydrant was visible and a collision with it was an inherent risk of skiing. (Id. at p. 268.)

A snowmobile is not one of the risks specifically identified in the Michigan Ski Area Safety Act, and we have not found a published case specifically deciding whether a collision on a ski slope with a snowmobile is an inherent risk of skiing or snowboarding. Nevertheless, collision with certain vehicles has been included. While Souza involved only stationary equipment, the Michigan Ski Area Safety Act–which Danieley and Connelly accepted as reflecting the common law–included a collision with snow-grooming equipment as an inherent risk. Thus, collisions with some vehicles are recognized as inherent risks of the sports of skiing and snowboarding.

We recognize that assumption [*19] of the risk applies only to risks that are necessary to the sport. (Souza, supra, 138 Cal.App.4th at p. 268.) In Souza, snowmaking equipment was necessary to the sport of skiing because nature had failed to provide adequate snow. (Ibid.) As in Souza, we find the following quote from Verro v. New York Racing Ass’n, Inc. (1989) 142 A.D.2d 396, 400, 536 N.Y.S.2d 262 apt: “As is at least implicit in plaintiff’s argument, if only the risks of ordinary and necessary dangers inherent in a sport are deemed assumed, the doctrine of [primary] assumption of risk . . . would not apply to obvious, known conditions so long as a defendant could feasibly have provided safer conditions. Then, obviously, such risks would not be ‘necessary’ or ‘inherent’. This would effectively emasculate the doctrine, however, changing the critical inquiry . . . to whether the defendant had a feasible means to remedy [the dangers].”

Forrester’s expert Penniman claimed snowmobiles were merely a convenience and a ski resort could operate without them. He also testified, however, that the use of snowmobiles was a standard practice at ski resorts. Although critical of their overuse, Penniman recognized their usefulness in an emergency. He agreed with Sierra’s policy, which permitted snowmobiles to be used on the ski slopes in cases of emergency, [*20] even on the busiest days. Thus Penniman agreed generally that the use of snowmobiles was necessary to ski resorts, although he disputed the specific circumstances under which that use might be warranted.

There are many inherent risks of injury and emergency in skiing and snowboarding, and snowmobiles are used to respond quickly to injuries as well as to other emergencies such as lift malfunctions requiring evacuation, fire, gas leaks, and altercations. It appears to us that the use of snowmobiles on the ski slopes at ski resorts is at least as necessary to the sport as the snowmaking equipment in Souza or the directional signs acknowledged as “necessary” in Van Dyke v. S.K.I. Ltd. (1998) 67 Cal.App.4th 1310, 1317, 79 Cal. Rptr. 2d 775.

At least one unpublished federal case has found a collision with a snowmobile to be an inherent risk of skiing or snowboarding. In Robinette v. Aspen Skiing Co., L.L.C. (D. Colo., Apr. 23, 2009, No. 08-CV-00052-MSK-MJW, 2009 U.S. Dist. LEXIS 34873, affd sub nom. Robinette v. Aspen Skiing Co., L.L.C. (10th Cir. 2010) 363 Fed.Appx. 547, the court found “the specific risk of colliding with a snowmobile being operated by a ski resort employee is necessarily within the ‘risks of skiing/riding.'” (Id. at p. *7.) The court reasoned that since “the legislature has seen fit to specifically enact safety measures to prevent skier-snowmobile collisions, one can [*21] hardly argue that such a collision somehow falls outside of [plaintiff’s] express assumption of ‘all risks of skiing.'”3 (Ibid.)

3 Although California has no similar regulation of snowmobiles at ski slopes, the requirements of the Colorado law are similar to Sierra-at-Tahoe’s policy for snowmobile operation. “All snowmobiles operated on the ski slopes or trails of a ski area shall be equipped with at least the following: One lighted headlamp, one lighted red tail lamp, a brake system maintained in operable condition, and a fluorescent flag at least forty square inches mounted at least six feet above the bottom of the tracks.” (Colo. Rev. Stat. Ann. § 33-44-108, subd. (3).)

Based on the foregoing, we conclude the trial court did not err in ruling that primary assumption of the risk applies in this case and instructing the jury accordingly. To the extent that the evidence showed a snowmobile was operating at the resort and involved in an collision with Forrester that day, its presence and that of related equipment (here apparently a towed toboggan) on the slope was an inherent risk of snowboarding at the resort. However, that risk may well have been unreasonably increased by Sierra if the specific circumstances alleged by Forrester regarding the snowmobile’s use at the time of the alleged collision were believed by the jury. But the jury was presented with a variety of competing scenarios as to what happened at the resort that day. Although we do not know which evidence it credited and which it did not, we know that it did not consider the specific circumstances of the snowmobile’s operation that day to have unreasonably increased the risk already present from the necessary use of snowmobiles at resorts.4

4 The better practice in cases such as this one, where key facts–here even the preliminary fact as to whether there was a collision at all, let alone a collision between a snowboarder and a snowmobile towing a toboggan–are in dispute, is to craft the special verdict form to require the jury to make preliminary factual findings, here such as whether the alleged accident occurred at all and the particulars, if so. (See CACI No. 410, Directions for Use [“There may also be disputed facts that must be resolved by a jury before it can be determined if the doctrine applies”], citing Shin v. Ahn (2007) 42 Cal.4th 482, 486, 64 Cal. Rptr. 3d 803, 165 P.3d 581.)

In arguing that a collision [*22] with a motorized vehicle is not an inherent risk, Forrester relies on out-of-state cases, some unpublished. We find those cases distinguishable or not persuasive. In Verberkmoes v. Lutsen Mountains Corp. (D. Minn. 1994) 844 F.Supp. 1356, a skier collided with an unmarked all terrain vehicle (ATV) parked on or near a groomed trail. The court denied summary judgment for the defendant, finding the hazard of the parked ATV was within the control of the ski resort, not an obvious risk like a lift tower, and not a hidden risk like a snow-covered stump. (Id. at pp. 1358-1359.) Defendant’s “parking of the ATV on the trail during routine maintenance of the ski slope cannot be deemed, as a matter of law, an inherent risk of skiing.” (Id. at p. 1360.) Rather, it was “a danger that reasonable prudence on the part [of defendant] would have foreseen and corrected or at least placed a warning for skiers.” (Id. at p. 1359.) We find Verberkmoes distinguishable, largely because the decision was based on where the ATV was parked; the ski resort could have easily parked it elsewhere or warned against the hazard. Here, the question was whether the resort’s use of snowmobiles on the ski slopes and consequential possibility of contact with snowboarders was an inherent risk of snowboarding.

In Schlumbrecht-Muniz v. Steamboat Ski and Resort Corp. (D. Colo. 2015) 132 F.Supp.3d 1310, the defendant had argued that [*23] a collision with a snowmobile is an inherent danger and risk of skiing. The court had rejected this argument twice before, each time concluding “whether a collision with a snowmobile is an inherent danger or risk of skiing is not necessarily a question of law because what is an inherent danger or risk of skiing is not limited to the circumstances specifically enumerated in the [Ski Safety Act].” (Id. at p. 1316.) The court declined to address the argument again. (Ibid.)

We find this conclusory analysis unhelpful. For the reasons stated ante, we find a collision with a snowmobile is an inherent risk of snowboarding. As to whether this particular collision was the result of the inherent risk, the jury was properly tasked with determining whether Sierra’s operation of the snowmobile unreasonably increased the risk already inherent in snowboarding. This determination governed whether this particular collision was barred by the assumption of the risk doctrine.

Forrester also relies on an unpublished case from the state of Ohio, Coblentz v. Peters 2005 Ohio 1102, 2005 Ohio App. LEXIS 1073, that found use of a motorized golf cart was not “an actual part of the sport of golf,” so the risk of being struck and injured by a golf cart “is not an ordinary risk of the game.” [*24] (Id. at ¶ 21.) To the limited extent this case is analogous, we decline to apply its narrow analysis to the sport of snowboarding and the associated risk of encountering the resort’s necessary equipment when on the ski slopes. (See Souza, supra, 138 Cal.App.4th at p. 269 [finding snowmaking equipment necessary to the sport of skiing].)

As we have noted, unlike many assumption of the risk cases, including those cited ante, here there is a genuine factual dispute as to what happened to Forrester and caused his injuries. The jury needed to resolve this factual dispute in order to determine whether Sierra unreasonably increased the inherent risk. Accordingly, the issue of whether recovery is barred by assumption of the risk could not be determined as a matter of law, such as by a motion for summary judgment, as is often the case. Here, we need not decide if Forrester’s specific collision was an inherent risk, but only the broader question of whether a collision with a snowmobile operated on the ski slopes of a resort is an inherent risk of snowboarding. If so, recovery is still possible if Sierra unreasonably increased the risk by the specific circumstances surrounding its operation of the snowmobile.

“Although defendants generally [*25] have no legal duty to eliminate (or protect a plaintiff against) risks inherent in the sport itself, it is well established that defendants generally do have a duty to use due care not to increase the risks to a participant over and above those inherent in the sport. Thus, although a ski resort has no duty to remove moguls from a ski run, it clearly does have a duty to use due care to maintain its towropes in a safe, working condition so as not to expose skiers to an increased risk of harm.” (Knight v. Jewett (1992) 3 Cal.4th 296, 315-316, 11 Cal. Rptr. 2d 2, 834 P.2d 696.) Numerous cases have pondered the factual question of whether various ski resorts have increased the inherent risks of skiing or snowboarding. (See Vine, supra, 118 Cal.App.4th at p. 591 [redesign of snowboarding jump]; Solis v. Kirkwood Resort Co. (2001) 94 Cal.App.4th 354, 366, 114 Cal. Rptr. 2d 265 [construction of the unmarked race start area on the ski run]; Van Dyke v. S.K.I. Ltd., supra, 67 Cal.App.4th 1317 [placement of signs in ski run].)

Forrester contends that even if the ski patrol’s use of a snowmobile is necessary to support the sport of snowboarding, the evidence here showed the snowmobile was not used for that purpose. Indeed, he claims that because the members of the ski patrol on duty that day denied being involved in a collision, the evidence established that the snowmobile was driven by a non-safety employee. He argues the trial court was required [*26] to resolve factual questions as to whether a member of the ski patrol was using the snowmobile before it determined whether assumption of risk applied.

We disagree with Forrester that the trial court was required to resolve these factual questions before submitting the case to the jury. Resolution of the factual issues as to how and by whom the snowmobile was operated “requires application of the governing standard of care (the duty not to increase the risks inherent in the sport) to the facts of this particular case–the traditional role of the trier of fact.” (Luna v. Vela (2008) 169 Cal.App.4th 102, 112, 86 Cal. Rptr. 3d 588.) “Our conclusion it is for the trier of fact to determine whether Vela breached his limited duty not to increase the risks inherent in the sport of volleyball finds solid support in the Supreme Court’s most recent sports injury, primary assumption of the risk decision, Shin v. Ahn, supra, 42 Cal.4th 482 . . . . In Shin the Supreme Court affirmed the trial court’s denial of a motion for summary judgment brought by a golfer who had struck one of his own playing partners with a tee shot. The court held the primary assumption of the risk doctrine regulates the duty a golfer owes both to playing partners and to other golfers on the course, found being hit by a stray [*27] golf shot was an inherent risk of the sport and concluded ‘golfers have a limited duty of care to other players, breached only if they intentionally injure them or engage in conduct that is “so reckless as to be totally outside the range of the ordinary activity involved in the sport.”‘ [Citation.] However, the Court also held whether the defendant had breached that limited duty of care by engaging in reckless conduct was a question for the trier of fact: ‘In determining whether defendant acted recklessly, the trier of fact will have to consider both the nature of the game and the totality of circumstances surrounding the shot. . . . [¶] Many factors will bear on whether a golfer’s conduct was reasonable, negligent, or reckless. . . . [¶] . . . This record is simply too sparse to support a finding, as a matter of law, that defendant did, or did not, act recklessly. This will be a question the jury will ultimately resolve based on a more complete examination of the facts.’ [Citation.]” (Luna, at pp. 112-113.) “In light of the Supreme Court’s decision in Shin, we conclude as the Luna court did, that resolving the question of whether [defendant] increased the risk of falling is properly decided by the trier [*28] of fact.” (Fazio v. Fairbanks Ranch Country Club (2015) 233 Cal.App.4th 1053, 1062, 183 Cal. Rptr. 3d 566.)

Forrester’s argument about the circumstances of the snowmobile’s use that day is premised upon the jury’s accepting his version of events–that a snowmobile hit him from behind, while driven by a non-safety employee who was not responding to an emergency and who was operating without lights, siren, or flag and contrary to numerous safety policies of Sierra. In short, Forrester assumes that the snowmobile had no legitimate reason to be on Broadway at the time of the incident. But the state of the evidence was such that the jury could decide otherwise. Due to Forrester’s failure to report the accident when it happened, the conflicting testimony of Forrester and Medina, the conflict in expert testimony as to how a collision would have occurred and what caused Forrester’s injuries, and the absence of any independent witness who saw or even heard about the accident, the jury could have rationally concluded the accident did not happen at all. Alternatively, the jury could have concluded that Forrester hit the toboggan out of carelessness or recklessness, Forrester’s injuries were not from the collision, or simply that Forrester failed to prove his version of the accident.

This [*29] case turned in large part on the jury’s assessment of credibility. There was evidence from which the jury could conclude that the incident occurred as described by Forrester and Medina, and that Sierra unreasonably increased its visitors’ inherent risk of a collision with a snowmobile accordingly–because a non-safety employee, not responding to an emergency, drove a snowmobile at significant speed across a beginner run on the busiest day of the year without using lights, siren or a flag, and in contravention of numerous safety policies. These circumstances, or any combination thereof, could certainly constitute an unreasonable increase of the inherent risk by Sierra. Forrester’s theory was tendered to the jury and the jury decided adversely to his argument. Forrester does not challenge the sufficiency of the evidence to support the verdict.

The trial court did not err in determining assumption of the risk applied and submitting the case to the jury on the question of whether Sierra unreasonably increased the risk inherent in the sport of snowboarding.


Instruction on Secondary Assumption of the Risk

A. Background

As we set forth ante, the jury was also instructed pursuant to CACI No. 405–the comparative [*30] fault instruction modified by the trial court–as to secondary assumption of the risk. The jury was told that in order for Sierra to succeed on its claim that Forrester contributed to his own harm, Sierra would need to prove both that Forrester assumed the risks that led to his injury and that Forrester’s assumption of those risks was a substantial factor in causing his harm.

The term “assumption of risk” has been “used in connection with two classes of cases: those in which the issue to be resolved was whether the defendant actually owed the plaintiff a duty of care (primary assumption of risk), and those in which the defendant had breached a duty of care but where the issue was whether the plaintiff had chosen to face the risk of harm presented by the defendant’s breach of duty (secondary assumption of risk). [Citation.] In the latter class of cases, we concluded, the issue could be resolved by applying the doctrine of comparative fault, and the plaintiff’s decision to face the risk would not operate as a complete bar to recovery. In such a case, the plaintiff’s knowing and voluntary acceptance of the risk functions as a form of contributory negligence. [Citation.]” (Kahn v. East Side Union High School Dist. (2003) 31 Cal.4th 990, 1003, 4 Cal. Rptr. 3d 103, 75 P.3d 30.)

“Secondary assumption [*31] of risk [arises] where a defendant breaches a duty of care owed to the plaintiff but the plaintiff nevertheless knowingly encounters the risk created by the breach. Secondary assumption of risk is not a bar to recovery, but requires the application of comparative fault principles.” (Connelly, supra, 39 Cal.App.4th at p. 11.)

B. Analysis

Forrester contends the special instruction on secondary assumption of the risk was incorrect because it omitted the requirement that a plaintiff “knowingly” or “voluntarily” accept the increased risk, and because the court failed to set it apart from the instruction related to primary assumption of the risk. Forrester contends the error prejudiced him because it confused the jury on the law.

As Sierra does not defend the instruction, we will assume arguendo that it is incorrect for omitting “knowingly” or “voluntarily.” We reject, however, the argument that it was error to instruct on secondary assumption of the risk immediately after instructing in the language of CACI No. 410 on primary assumption of the risk. Each instruction begins by noting the party whose claim the instruction addresses and what each party must prove to succeed on its claim. The two claims are necessarily related. “Nevertheless, in [*32] certain circumstances primary and secondary assumption of risk are intertwined and instruction is required so the jury can properly determine whether the defendant did, in fact, increase the risks inherent in a hazardous sport so that secondary assumption of risk should be considered.” (Vine, supra, 118 Cal.App.4th at p. 592.)

“Cases like this one, where the plaintiff contends the defendant breached the duty not to increase the risks inherent in a hazardous sporting activity, present both aspects of the assumption of risk doctrine. If the plaintiff fails to show any increase in the inherent risks, or if the trial court determines that the only risks encountered were inherent in the sport, the defendant prevails based on primary assumption of risk. If the jury, properly instructed on the scope of the defendant’s duty, determines the defendant did increase the inherent risk, it then considers the plaintiff’s claim based on secondary assumption of risk as an aspect of the plaintiff’s comparative fault.” (Vine, supra, 118 Cal.App.4th at p. 593.)

“[T]here is no rule of automatic reversal or ‘inherent’ prejudice applicable to any category of civil instructional error, whether of commission or omission. A judgment may not be reversed for instructional error in a civil case [*33] ‘unless, after an examination of the entire cause, including the evidence, the court shall be of the opinion that the error complained of has resulted in a miscarriage of justice.’ (Cal. Const., art. VI, § 13.)” (Soule v. General Motors Corp. (1994) 8 Cal.4th 548, 580, 34 Cal. Rptr. 2d 607, 882 P.2d 298 (Soule).)

“Instructional error in a civil case is prejudicial ‘where it seems probable’ that the error ‘prejudicially affected the verdict.’ [Citations.]” (Soule, supra, 8 Cal.4th at p. 580.) Actual prejudice must be assessed in the context of the entire record using a multifactor test. (Ibid.) “Thus, when deciding whether an error of instructional omission was prejudicial, the court must also evaluate (1) the state of the evidence, (2) the effect of other instructions, (3) the effect of counsel’s arguments, and (4) any indications by the jury itself that it was misled.” (Id. at pp. 580-581.)

Forrester contends the record demonstrates prejudice because there was strong evidence that Sierra increased the risk by its operation of a snowmobile that day, the jury deliberated for two full days, and the request for a definition of “unreasonable” suggests the jury was confused as to the law.

We disagree that the record shows it was “probable” that the instructional error “prejudicially affected the verdict.” (Soule, supra, 8 Cal.4th at p. 580.) As we have discussed, the evidence raised questions [*34] of witness credibility, and the jury was also called upon to consider conflicting expert testimony. The jury heard five days of evidence and deliberated for two days. In that circumstance, the jury’s two days of deliberation may suggest its “conscientious performance of its civic duty, rather than its difficulty in reaching a decision.” (People v. Walker (1995) 31 Cal.App.4th 432, 439, 37 Cal. Rptr. 2d 167 [six and one-half hours of deliberation after two and one-half hours of presentation of evidence].) The jury’s request for a definition of “unreasonable” and its request for a reread of evidence as to whether there was an emergency that day indicate the jury was most likely focused on Sierra’s conduct, not Forrester’s.

The most useful guide for the jury in sorting through the issues of primary and secondary assumption of the risk was the verdict form that separated the issues. The verdict form asked six questions; only if the jury answered yes to a question was it to proceed to the next question. The questions were: (1) Did Sierra or its employee unreasonably increase the risks inherent in snowboarding? (2) Was this unreasonable increase in the risks a substantial factor in causing harm to Forrester? (3) What are Forrester’s total damages? (4) Did [*35] Forrester assume the risks that led to his injury? (5) Was that assumption of risk a substantial factor in causing his injury? (6) What percentage of responsibility for Forrester’s harm do you assign to Sierra, to Forrester? The jury answered the first question “no” and therefore did not answer any other questions. Accordingly, the jury never reached the issue of secondary assumption of risk and thus never had to apply the challenged jury instruction. Forrester has failed to show prejudicial instructional error. (See Caldwell v. Paramount Unified School Dist. (1995) 41 Cal.App.4th 189, 206, 48 Cal. Rptr. 2d 448 [error to grant new trial due to instructional error when jury never reached issue covered by instruction]; Vahey v. Sacia (1981) 126 Cal.App.3d 171, 179-180, 178 Cal. Rptr. 559 [purported instructional error on damages was not prejudicial where jury found the defendant was not negligent and never reached the issue of damages].)


Refusal to Instruct on Willful Suppression of Evidence

A. Background

At trial, Forrester made much of the fact that the snowmobile’s driver was never identified, which he blamed on Sierra’s failure to retain the daily checklist completed by the driver who had taken out the snowmobile that day. Before trial, Forrester sought to admit Sierra’s special ski permit and winter operation plan from the United States Forest [*36] Service. He argued Sierra was required to maintain the checklist under the document retention policy set forth in that plan. The trial court excluded the document, ruling that whether Sierra had a contractual duty to retain the report was irrelevant, particularly because–given the evidence that the snowmobile could be used by multiple people in the same day–the checklist would not necessarily indicate who was driving a snowmobile at the time of the alleged accident. The court noted that Sierra had provided Forrester with a list of 19 authorized drivers.

Forrester requested that the trial court give CACI No. 204, which provides: “You may consider whether one party intentionally concealed or destroyed evidence. If you decide that a party did so, you may decide that the evidence would have been unfavorable to that party.” The request was based on evidence that MacClellan failed to interview all 19 people authorized to use a snowmobile that day and the destruction of the checklist. The court denied Forrester’s request.

Forrester raised the failure to give CACI No. 204 in his motion for a new trial.

B. Analysis

Forrester contends it was error to refuse the requested instruction. For the first time on appeal, he asserts [*37] the snowmobile driver’s leaving the scene of the accident without identifying himself was sufficient evidence to support the instruction. As to the destruction of the checklist, the basis for instruction advanced at trial, Forrester argues there was no evidence the checklist was actually discarded, only that the practice was to discard the checklists daily. He contends he was prejudiced by lack of the instruction because he could not argue the presumption that the destroyed evidence was unfavorable to Sierra to offset the inability to identify the driver.

“A party is entitled to have the jury instructed on his theory of the case, if it is reasonable and finds support in the pleadings and evidence or any inference which may properly be drawn from the evidence.” (Western Decor & Furnishings Industries, Inc. v. Bank of America (1979) 91 Cal.App.3d 293, 309, 154 Cal. Rptr. 287.) An instruction on willful suppression of evidence is appropriate if there is evidence “that a party destroyed evidence with the intention of preventing its use in litigation.” (New Albertsons, Inc. v. Superior Court (2008) 168 Cal.App.4th 1403, 1434, 86 Cal. Rptr. 3d 457.)

First, Forrester did not rely at trial on the theory that evidence was destroyed when the snowmobile driver left without identifying himself. “‘A civil litigant must propose complete instructions in accordance with his or her theory of the litigation [*38] and a trial court is not “obligated to seek out theories [a party] might have advanced, or to articulate for him that which he has left unspoken.” [Citations.]’ [Citation.]” (Stevens v. Owens-Corning Fiberglas Corp. (1996) 49 Cal.App.4th 1645, 1653, 57 Cal. Rptr. 2d 525.) Thus we need not consider this new theory first advanced on appeal.

Further, the evidence established the checklist had been discarded shortly after the accident, before Forrester made his complaint. While there was no testimony from the person who discarded the checklist for that day and MacClellan testified he did not know if the specific checklist had been discarded, Rice testified the checklists were thrown out on a daily basis and MacClellan testified he knew they were thrown out shortly after they were filled out.

Forrester relies on Ventura v. ABM Industries Inc. (2012) 212 Cal.App.4th 258, 150 Cal. Rptr. 3d 861, claiming it is “right on point.” In Ventura, a negligent hiring and supervision case, the trial court gave the instruction at issue here based on testimony of the human resources director about redactions in personnel records and the defendant’s failure to interview certain witnesses during the investigation of plaintiff’s complaints. (Id. at p. 273.) The appellate court found no error, noting “Defendants were free to present the jury with evidence that (as counsel represented to the [*39] court), the redactions were only of telephone numbers, and that the failure to interview certain witnesses was proper, and to argue that evidence to the jury.” (Ibid.)

Ventura is distinguishable. There, the actions that supported the instruction occurred during the investigation of plaintiff’s claim, thus permitting an inference there was destruction of evidence to prevent its use in litigation. Here, the evidence was that the snowmobile checklists were routinely discarded each day long before the incident at issue here, unless information on the checklist triggered a need for maintenance. Because Forrester did not report his accident until multiple days had passed, Sierra did not become aware of Forrester’s claim until after the checklist at issue had been discarded. There was no evidence, either direct or from which the inference could be drawn, that the practice of discarding the checklists daily was intended to forestall their use in litigation.

The trial court did not err in declining to give CACI No. 204 on willful suppression of evidence.5

5 Further, Forrester’s claim of prejudice is unconvincing. The instruction permits the jury to draw the inference that the suppressed evidence would have been unfavorable to the party suppressing it. The checklist would have shown, at most, the name of the snowmobile driver. Sierra stipulated that the driver was one of its employees and provided Forrester with a list of authorized drivers.


The judgment is affirmed. Sierra shall recover costs on appeal. (Cal. Rules of Court, rule 8.278(a).)

/s/ Duarte, J.

We concur:

/s/ Butz, Acting P. J.

/s/ Mauro, J.


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