It appears that this is for the swales in between the check dams where the filter topsoil borrow is installed. My questions is how many tests will be required. Will each area (Approximately 28) be counted as a seperate basin? that would be 28 basins x 2 tests bottom x 2 tests top = 112 tests. Or will each side of the road be counted as a basin which would equal 8 test total, 4 on each side?