13 C.F.R. § 134.902 – Standing.

(a) A Size Standard Petition may be filed with OHA by any person that is adversely affected by the Administrator's decision to revise, modify, or establish a size standard.
(b) A business entity is not adversely affected unless it conducts business in the industry associated with the size standard that is being challenged and:
1. (1) The business entity qualified as a small business concern before the size standard was revised or modified; or
2. (2) The business entity qualifies as a small business under the size standard as revised or modified.