Specifications include, but are not limited to: The Work includes structural modifications to rehabilitate the gate slot grating support ledges and includes but is not limited to the following: 1. Installation of temporary work platform in gate slots for safe access and 100% containment. 2. Demolition of deteriorated concrete and grout at the gate slot ledges and adjacent transformer truck rails. 3. Removal of wires, cables and electrical junction boxes housed along the slot edges. 4. Replacement of deteriorated anchor bolts. 5. Removal of piping and valves. 6. Furnishing and installation of new grating cover supports on the upstream and downstream edges of the gate slots. 7. Modification of transformer truck rail guards. 8. Furnishing and placement of concrete grout to anchor the new supports and for repairs to deteriorated grout/concrete. 9. Disposal of removed materials. The Contractor shall also supply four (4) sets of 2-piece gratings to replace the existing grating at four locations. Eight (8) grating sections in total.