That's the entire reason the court stopped construction. It's in the public documents. The ESA was supposed to identify any plots of old growth native forests (especially stuff like bogs and streams). Google rushed to cut everything down to remove any evidence of old growth habitats but they claimed that they did their own internal assessment beforehand and preserved a few of those sites. The Finnish Association for Nature Conservation (aka Suomen luonnonsuojeluliitto) is the group that used satellite imagery to argue in court that they lied and that there were several native, protected strands that were NOT spared.