RedactedNarrative: Narrative of events and witness statement summary:
  
  On July 7, 2021 at 1636 hours I received a call from Utah Lake State Park.  An employee at the entrance booth told me there was a man there wanting to talk to me.  I told him to go ahead and hand him the phone.  The man asked who he was speaking with and then introduced himself as operator a superintendent with California State Parks.  He said he was at the state park and that he had rented a PWC from the concession  He said he tried multiple times to start it and then it exploded, causing the front to blow off and lifting the seat that he and his son were sitting on. He said it lifted them some inches and then they came back down on the seat.  He asked who would take the report and I told him I would.  I let him know that I'd be about 15-20 mins away and asked if he would like medical to respond.  He said he had some back pain but did not want any medical response.  He told me who was the Rentals employee that was working so I called and asked her to not touch or move the PWC until I got there.
  
  I arrived at Rentals and found operator near his rental car.  I let him know that I was recording audio with my dash cam.  I started by asking if he still denied medical and he told me he now wanted medical to respond due to the back pain.  I requested them through dispatch at 1705 hours.  I then asked him for his driver license.  He told me he wouldn't give me his personal address but his work address instead.  Later he would explain that was because he didn't want anyone coming to his house.  I asked for his phone number but he said it had been water damaged when it went into the lake, he gave me his daughter's number as a contact.
  
  We walked out to the wave runner that was tied up to the dock used for the rentals.  I took photos and video of the machine.  He pointed out the machine that he had been on and the parts of the machine that had been thrown into the water.  employee, walked out on the dock and at that time I asked her to fill out a witness statement.  I also put one on a clipboard and took it to operator.  He refused to fill out the statement citing it was my job to write a report, not his.  He told me he wasn't going to take 45 mins to do my job and based on my training I should be able to create a report.  I told him if he insisted, he could make a verbal report into my microphone but he would either need to pause when a plane came in to land or make a written report, he opted for the verbal report.
  
  I asked him to start at the time he got onto the machine.  He told me that he and his son, got onto their PWC with his son sitting behind him.  They started to motor away from the dock and so did his wife and daughter on a different PWC.  They were both under power when his wife's PWC stalled.  Then his PWC stalled about 20' from leaving the dock.  He and his wife were able to start them again only to have them stall again.  At that time he told witness that he smelled gasoline.  He asked if they  had just fueled it but didn't get a response from witness.  That's when he tried to start it again and there was an explosion.  (At this point in the interview Provo FD arrived and began a medical assessment on him).  Operator said the explosion lifted he and his son up off the seat which they came back down on.  Witness turned and asked what happened.  Operator suspected a fuel leak.  He had son get into the lake and gather the contents of the PWC so he might not be charged for them.
  
  Operator asked witness to first get his wife since they were still adrift and bring them back to the dock.  Operator got in the lake to grab some of the items and swam them back to the dock and also pushed the PWC to the dock.
  
  There had begun to be a number of people walking out on the dock so I broke from the interview to go take pictures and ask the responders to not touch the PWC.  I also grabbed the bin from the front of the PWC and secured it in my truck. I continued to interview with operator. He mentioned that witness was on the phone with the manager of rental, telling him the situation when operator said he'd like to talk to owner and that he'd call owner from his daughter's phone. Operator tried twice to call owner with no luck but left a voicemail with two different numbers to contact him at. I then gave Operator my business card with a case number. I had called for a tow truck to seize the PWC as evidence which showed up at (1734 hours).
  
  I then handed out witness statements to the rest of the operator's family. Next I used a side tow method with the Ranger boat to get the PWC to the south ramp where the tow truck was and loaded it onto the trailer. Of note is that the depth in the area of the accident showed 5.6'. I then had the tow truck meet me inside the fenced maintenance yard and placed the PWC into the building on the east side which is fully locked down and again within a fenced area that is locked after hours. 
  
  I went back to th family and collected witness statements. I asked him some more questions about the nature of the explosion and asked if he would mind showing me his lower legs to see if hair was burned. Neither he or his son had any burned leg hair.
  
  Following up with witness, she said she had just fueled the PWC before he went out. She said that was the preferred way to run the rentals, if time allowed, they fuel vessels as soon as they came in.
  
  Inspection of PWC
  I photographed and took a video of the PWC while it was at the dock. I continued taking photos starting at the bow and began inspecting the PWC. The front hood was still in the open position from the blast. There had been a bin under the hood which he had recovered and put as many items back into it that had been thrown into the water. The photo of the bin and its contents (oil bottle, registration, & insurance papers, an an expired fire extinguisher) is DSCF0872. The photo showing where the bin is originally housed is DSCF0869.
  
  With the bin fully out, my attention was immediately drawn to the filler neck nose where it is attached to the fuel tank. The Tridon clamp was intact, but I noticed it was not fully over the rib on the fuel tank nipple. I put my flashlight against the fuel tank to illuminate the fuel level. The fuel level was flush with the bottom of the fuel neck which caused me to be suspicious if that was a point that was leaking. I noticed that right below the possible leak point, the fiberglass was a different color, like a solvent had been dripping on it. The diagrams are attachment "fuel system" with part "30" being the filler neck hose. Also included in this photo "DSCF0878 Highlighted" which shows the discoloration of the hull under the fuel leak.
  
  I had another Ranger bring our fuel trailer over and slowly start pumping fuel in the tank. At first I saw only one drop. Then I saw some fumes and then there began to be a constant stream leaking from the end of the hose. The attached photo is titled "steady fuel leak". There was no firewall in the hull and any fumes could make their way through the entire hull.
  
  I next went back to the area under the seat where the engine is. Damage there is detailed in that attachment "Air Intake" where the air intake silencer had seperated from the performed hose (phote DSCF0903).
  
  Aft of that area and on the rear of the vessel had been two small vent grills that had been blown into the water. It had appeareed that each of them had plastic rivets holding them to the PWC, which broke off. The recovered vents are shown in photo next to where they had been attached. No other obvious damage was found.
  
  EOR