Santa Paula is my home airport. Short of a stall/spin or incapitation, it is an odd area to crash when using rwy 22. TPA is 850 or 600 AGL, even if you pull the power at the numbers downwind, you typically don't turn base untill about halfway between South mountain road and in where the drainage canal crosses the freeway in the top right corner of the picture above. There is no reason, even in a engine failure on downwind, to hit a house, its all farm fields, river bed, paintball field, and golf course between the freeway and the mountains on the right. If rwy 4 ( clockwise in the picture above) was in use, and they just departed, I can see a situation going bad fast. You have to ( in a 172 at least) make a a pretty constant climbing 30 degree turn right after South mountain road (actually it is called the 12th street bridge) to make the downwind without hitting the mountain so your turning at a pretty low altitude. Any loss of power if you were not expecting it would put you at 200-400" agl, in a 30deg bank at VX or Vy. Maybe not in a RV as the climb rate is so much better.