will see that because the invention is made of plasticized materials it is inexpensive to manufacture can be installed quickly and easily by one person does not effect the structural integrity of existing curb inlets because no drilling screwing welding or hammering is involved for installation in addition the invention is a low maintenance solution to the problem of water contamination of natural lakes rivers and stream beds the low maintenance costs for periodic removal of debris collected on the screen is a small price to pay for generations of clean water for everyone furthermore the invention has additional advantages in that it is the most inexpensive device for intercepting debris or sediment runoff before entering the storm sewer trunkline it provides a debris and sediment filtering system which will not interfere or impede with the operations of street cleaning equipment asphalt paving machines snow plows or the like it provides a screen and filtration insert for curb inlets that can be produced with various sized hydraulic openings to serve as a temporary or permanent storm water erosion pollution prevention measure it provides a debris and sediment screen with a relieving means which will release from a fixed position without human assistance and return to the original fixed position without human assistance although the description above contains many specificity 39 s these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the presently preferred embodiments of this.