we have matthew hagerman, certified geologist, who's looked at the data and said there's still contamination at the site. remember, the mitigation measure here is if there is substantial earth movement, then the -- the developer is supposed to come up with a plan. that's not how ceqa works. you don't wait until humpty dumpty falls off the wall to put him together again. >> commissioner moore: my question pertains to the last part of what you're saying, and that is what the core of what the supervisors' concerns are, partially because we have real threats on historic resources of this kind and incidents where things happen which nobody anticipated. all of a sudden, the thing is gone. too bad, we didn't know. so the mitigating circumstances, while they may be correct as far as thinking goes, the reality of what happens when you're in the field, and all of a sudden, the soils slide, whoops, the thing is gone. and i see you nod and appreciate that you do, because there's a reality to wishful thinking about what you would do, and when it starts to slide, it's quicksand. you're done. it's kind of