Sureties interested in participating as Prior Approval Sureties or PSB Sureties should apply in writing to the D/SG at 409 3rd Street, SW., Washington, DC 20416. OSG will determine the eligibility of the applicant considering its standards and procedures for underwriting, administration, claims and recovery. Each applicant must be a corporation listed by the U.S. Treasury as eligible to issue bonds in connection with Federal procurement contracts.