Three employees were observed. Because of the impaired clearance, the hazard is the danger of slipping. There is likelihood of moderate injury. Later, three 2 x 6's were attached to the platform edge, reducing the distance between the edge and truck ladder. Matlack had no general right of control of the facility.
Trailers are of different sizes.
Usually, trucks with right sided ladders were not used. Matlack had discussed roof modification with McCall. McCall's position was that it would be too expensive. Lee Zimmerli, risk manager for McCall Oil, had met with George Masson, Matlack's terminal manager in October, 1988. The pipe attached to the overhanging roof was modified to change the service elbow for transmission of the liquid product.