◆ SpookStack

ok sd To: Counterterrorism From: Washington Field Re: 279A-WF-222936-USAMRIID, 10/17/2007 The Bacillus subtilis contaminant is not detected in RMR-1029 by phenotypic or genetic analyses. It is not known how the Bacillus subtilis contaminant came to be in the Post and Brokaw spore powders. Since the contaminant is not found in RMR-1029 and not found in the spore material mailed to Senators Leahy and Daschle, it is reasonable to conclude that the contaminant was introduced during the growth process of the evidentiary material. Taken together, the presence of the Bacillus subtilis contaminant, and the phenotypic differences of the evidentiary spore powders, it is presumed that, on two separate occasions, a sample of RMR-1029 was used to grow spores, dried to a powder, packaged in an envelope with a threat letter, and mailed to the victims. In November of 2006, upon consent provided by USAMRIID Command, strains of Bacillus subtilis, were collected from Dr. Ivins's stock collection. All of the collected samples compared negatively to the Bacillus subtilis contaminant isolated from the Post and Brokaw envelopes. In June of 2007, upon consent provided by US Command, environmental samples were collected fron[ space and equipment; but, ultimately compared negatively To the evidentiary Bacillus subtilis contaminant. Purpose On or about October 24, 2007, the Washington Field Office (WFO) AMERITHRAX Squads, with assistance from the Hazardous Materials Response Unit (HMRU), the Evidence Response Team (ERT), the Hazardous Materials Response Team (HMRT), and the Computer Analysis Response Team (CART) will conduct searches of the residence of Dr. Ivins, his vehicles, and his work and office spaces within building 1425 of USAMRIID. The overall purpose of the search is to collect general evidence, to include; digital or electronic media and storage items, notes, envelopes, paper envelope bands, tape, items with pieces of tape, and documents that may be evidence of involvement in the anthrax mailings. In addition, any non- anthracis species of Bacillus isolates potentially located in Dr. Ivins's orL_____]spac de; cold-gi e room lockers, Space, room and room office space). Upon the conclusion of the searches for general evidence at each location, HMRT personnel will collect environmental samples from areas that may harbor microbial or genetic signatures of the Bacillus subtilis contaminant.