You can go online and download the Permanent State ID Number Instructions and Application (DTSC Form 1358) for submission by mail or complete and submit online. Be advised that it may take 3-4 weeks to receive your new I.D. Number from the Department of Toxic Substance and Control (DTSC), so request your I.D. Number as early as possible. Remember, you can’t have your hazardous waste picked up without a California Identification Number. Should you have additional questions regarding the status or concerns about your identification number, please call the DTSC Regulatory Assistance Center at 1-800-728-6942.