"If we compute, assuming that we compute that area, on per square meter basis, and using the high end, 40 meters upward and 200 meters pababa (downward). So 40 meters upward slope x 100 meters is equal to 4,000 square meters. The downward slope, so [let's use] 200 meters x 100 meters, so that's 20,000 square meters. That's 24,000 square meters," Lacson said.