Storm drain filters are used in a storm drain to catch debris and sediment so that the runoff from parking lots and roads is filtered and cleaner water enters our waterways. A SDF is made out of melt blown polypropylene, it is made to fit under the drain grate and has overflow pockets that can handle heavy water runoff.
Storm Drain Filters are an inexpensive way to comply with best management practices laws that are regulated by some state, city and county governments.
The filters should be changed out every few months depending on the weather and the vehicle traffic. You can add a mini-boom to float in the SDF and help to pick up hydrocarbons. When replacing the SDF make sure you check with your local laws regarding proper disposal.