Those straps are used when removing a full Ultra-Pellet Trap from the catch basin. Since the unit is held in place by the grating, it only stands to reason that an Ultra-Pellet Trap full of sediment, dirt, and other pollutants would drop to the bottom of the basin as soon as the grate was lifted UNLESS the lifting straps sewn into the top of the unit were used.
BEFORE lifting the grate, the four straps should be “fished out” and brought up through the drain’s grating. A piece of rebar, steel rod, or a shovel or broom handle can then be inserted through each set of straps.
Now, when the grating is lifted, the Ultra-Pellet Trap will be lifted with it instead of dropping into the catch basin.