GAS-1252, Alternative Fuels Provider Return (for January 2023 and after) for January 2023 and after GAS-1252, Alternative Fuels Provider Return Documents Gas-1252_12-8-22_web_v1_Final.pdf Gas-1252 Instructions 12-7-22_web_v2_5%_Final.pdf gas-1252ds_7-31-18_web_v1_final.pdf