Instructions for permission letters: Be sure to include your return address, telephone and fax numbers, and date at the top of the letter. Attachment 1, Exhibit B provides examples of standards to help avoid such designs.Some of the Exhibit B statements are included in the draft ODS, but not all. A sample letter including the address is on page 19. Apply for a New Business Tax Certificate online or at the Business Tax Office. Refundable business registration fee plus special fees. Each agency's certification process is aimed at meeting those program and policy goals. For example: the City of Oakland certifies vendors. The STEM OPT Extension allows you to extend your original 12-month OPT for an additional 24 months. This manual is intended to guide the user through the purchasing process within the City of.