fea 8-28-53 Reproduced from the holdings of the Natioual Archives Pacific Southwest Region rivs . ® IA EOS (6) With a straight edge with an offsei on sketch No. 3, plumb level attached, as shown down from each of the make the horizontal adjustment of the pipe. reference marks and The actual adjustments after completing the horizontal reference marks described above and the vertical reference plane would require a maximum of two surveyors working with each adjustment group. One man on the rods and one computing grade rods and assisting as required. David L. Narver, DLNIrsLSHsevs Project Manager JS Constr.-Opér, Div. (2) L. 8S. Hammond Ne prs Project Engineering File 751 Mail Room (2) co my ecs Jf Chief Project Engineer