Same type of deal, It just kept burning downward and they just couldn't get enough water to penetrate the pile, They just kept trying to douse it with a fixed boom too, Had to get in with excavators to keep opening it up to get to the bottom.
There was a fire up here at a company that manufactured bark mulch and it was month or better before they got it under control as they had to keep digging down to get to extinguish it.
Yeah, In town its 1,375" which i don't think will cut it, You would have to back road in on some old logging roads to get up in some higher elevations to the NW.