$.$ A field worker in Florida is loading orange crates into trucks. The worker on the ground lifts the crates $(10$ in$.$ high and $10$ in$.$ deep, $30$ lbs$)$ similarly to the worker in the truck. He lifts it from the ground and lifts it to the flat bed of the truck $(50$ inches high$)$ where another worker will position it properly. Assume that the lift from the ground is fairly optimal, but that the reach onto the truck is fairly bad at H$=20$ inches. The worker lifts at a frequency of $0\mathrm{.}5$ lift$/$min for an $8-$hour shift. Please determine whether the job exceeds allowable limits according to the NIOSH guideline?