Step 1: 

Remove the grate and place Floc-Doser in the catchbasin. The Floc-Doser is sized and ordered to fit.

Step 2: 

Press the Floc Log onto the spikes that will hold the log in place. The rope can either be cut off or wrapped around the log. For larger inlets multiple logs will likely be used.

Step 3: 

Slide the UV cover in place. Slots in the cover slide along holding pins until it locks in place. Then replace the grate.