29. Illicit Schemes
1. Bid Rigging
2. Change Order Abuse
3. Collusion
4. Corruption
5. Excluding Qualified Bidders
6. Failure to Meet Contract Specs
7. False Statements or Claims
8. False, Inflated or Duplicate Invoices
9. Fictitious Contractor
10. Hidden Interests
11. Leaking of Bid Information
12. Manipulation of Bids
13. Product Substitution
14. Rigged specifications
15. Split Purchases
16. Unbalanced Bidding
17. Unjustified Sole Source Awards
http://guide.iacrc.org/
30. Indicator Examples
1. This tender featured a single bidder only
2. Allowing an unreasonably short time to respond to requests for bids
3. Bidder that has never bid previously wins tender
4. Bid is too close to budget, estimate or preferred solution
5. Bids are an exact percentage apart
6. Only the winning bidder was eligible to have received the contract for this
tender