SOURCES SOUGHT Repair Taxiway Pavements (Phase 3 and 4) Naval Air Station Oceana

237310 - Highway, Street, and Bridge Construction. The entire project will be constructed as a Phased project, which includes a base bid and an option. Phase 3 is the base bid and Phase 4 is the option. Phase 3: Includes taxiway repair, infield grading, upgrades to the stormwater system, relocation and improvements to the electrical circuits, replacement of the taxiway edge lighting, improvements to airfield lighting circuits, and UXO Cleanup. Improvements are focused on Taxiways Bravo, runway intersection, surrounding infields areas, removal of high-speed transition and new construction of A6. Phase 3 will remove existing concrete and asphalt pavements and portions of the base materials associated with the taxiways and Runway 5L 23R. Concrete demolished during this phase will be crushed and reused as new base course. Taxiways included in Phase 3 will be reconstructed with 14" PCC (Portland Cement Concrete) over 8 of crushed concrete, 8 rapid drainage layer and 12" of cement stabilized subgrade. Provide 4-foot wide taxiway shoulders paved with 8" of PCC over 8" of compacted crushed aggregate base course per UFC requirements Repaint all taxiway striping and markings, and match runway markings to existing. Provide grading of turf adjacent to taxiway to meet airfield safety criteria. Electrical adjustments will take place as required, including but not limited to the removal and reinstallation of existing lighting fixtures and isolation transformers. Protect existing Runway Guard Lights/Signs and in-pavement stop bar lights where required. Remove and reserve for reinstallation all runway and wig-wag lighting. Phase 3 requires upgrades to the stormwater facilities under the taxiway pavement and infield areas as required, this includes new stormwater pipes, inlets, headwalls, and end sections. Stormwater pipes range in size from 18-inch to 60 inch pipes. Phase 4: Include taxiway repair, infield grading, upgrades to the stormwater system, relocation and improvements to the electrical circuits, replacement of the taxiway edge lighting and improvements to airfield lighting circuits. Improvements are focused on Taxiways Bravo, Transition, Papa, Ditch B3, surrounding infields areas and supplemental pavements. Phase 4 will remove existing concrete and asphalt pavements and portions of the base materials associated with the taxiways. Concrete demolished during this phase will be crushed and reused as new base course. Taxiways included in Phase 4 will be reconstructed with 14" PCC (Portland Cement Concrete) over 8" of crushed concrete, 8" rapid drainage layer and 12" of cement stabilized subgrade. Provide 4-foot-wide taxiway shoulders paved with 8" of PCC over 8" of compacted crushed aggregate base course per UFC requirements. The construction of the compass rose that was started in phase 2 will be completed in this phase. Repaint all taxiway striping and markings, and match runway markings to existing. Provide grading of turf adjacent to taxiway to meet airfield safety criteria. Electrical adjustments will take place as required, including but not limited to the removal and reinstallation of existing lighting fixtures and isolation transformers. Protect existing Runway Guard Lights/Signs and in-pavement stop bar lights where required. Remove and reserve for reinstallation all runway and wig-wag lighting. Phase 4 requires upgrades to the stormwater facilities under the taxiway pavement and infield areas as required, this includes new stormwater pipes, inlets, headwalls, and end sections. The construction of the compass rose that was started in phase 2 will be completed in this phase. Stormwater pipes range in size from 18-inch to 60"x60" pipes. Ditch B3 is concrete lined and will tie to an existing outfall channel.