About 40 pages in, it seems to be a catalog of case referrals to the SPLC from the FBI for more information on civil rights incidents. Demonstrating FBI-SPLC relationship? Co-dependence? This file (unlike others on the vault page) is not downloadable.
Follow-up. . . balance of the document contains FBI responses to SPLC FOIPA requests. Includes 3-page article on Waco event (page 233)
Page 238: FBI expresses confidence in the SPLC as a "well known established and credible organization that monitors Domestic Terrorism (DT) activities within the US." Memo dated 3/12/2009.
Finished it. I concur with observation by 01f9d8, however, its value as a document is to demonstrate the close relationship between the FBI and the SPLC..