Tom Jensen, the field event announcer at the State Meet, has solved the mystery.
"Your mystery jumper is McIntyre from Analy. In the video the jumper has a solid blue jersey with white shoulder striping. That rules out Foothill, who has white piping down the side. Then add that the prior jumper was in a black uniform, which rules out Tam, the jumper before Tam is Foothill in blue. Therefore your jumper is from Analy."
All three of McIntyre's jumps were legal.
McIntyre was jumping during the running of the girl's 100m hurdles.