Complex sentence: It was estimated that in the time between the disappearance and Carcaño's new version, around 65,000 tons of trash had arrived to the landfill and as a result, it would be "very difficult" to locate the body.
Split into simpler sentences: It was estimated that in the time between the disappearance and Carcaño's new version, around 65,000 tons of trash had arrived to the landfill. As a result, it would be "very difficult" to locate the body.