Page 3a: Three Color Photos [2/15/74] View of foundation key trench, station 6+10, looking toward station 1+95. Note rough and irregular rock. [undated] View of foundation key trench from about station 1+85, looking towards 8+00. [4/29/74] An aerial view of the zone 1 embankment placement operations taken from above the left abutment looking northward toward the right abutment. Page 3b: Three Color Photos, with handwritten correction of 6a. [2/26/74] View of fault that crosses the grout cap at station 3+55 taken from station 3+65 looking downstream along fault. Handwritten note corrects the use of “fault” to “fissure.” [2/22/74] View of excavated grout cap taken from stations 3+15 looking towards 2+00. [3/1/74] View of opening in the side of the grout cap at station 5+25.