A pipe invert is 100.40 ft upstream and 98.90 ft downstream over a run of 150 ft. The plan minimum slope is 0.8%. Based on these elevations, how should the line be judged?

1. It fails because the slope is 0.15%
2. It passes because the slope is 1.0%
3. It fails because the slope is exactly 0.8%
4. It cannot be judged until pavement is placed above it