The U.S. Small Business Administration (SBA) is amending the size eligibility criteria for its Surety Bond Guarantee (SBG) Program for construction (general or special trades) or service concerns performing contracts in the Presidentially-declared disaster areas resulting from the 2005 Hurricanes Katrina, Rita, or Wilma. This rule amends the SBG size standard for some concerns by requiring them to meet either the size standard for the primary industry in which it, together with its affiliates, is engaged, or the current $6 million standard for the SBG Program, whichever is higher. The amended size standard applies only to construction and service concerns seeking SBA- guaranteed surety bonds for contracts or subcontracts, public or private, that are performed in the Presidentially-declared disaster areas resulting from the 2005 Hurricanes Katrina, Rita, or Wilma. Surety companies with whom SBA has executed a Preferred Surety Bond (PSB) Agreement under 13 CFR part 115 will be responsible for determining eligibility in compliance with this regulation. SBA surety bond personnel will be responsible for determining eligibility in compliance with this regulation for those surety guarantees that require SBA's prior approval. SBA prepared this rule as an interim final rule because its immediate implementation will make available needed SBG Program assistance to otherwise eligible small businesses and facilitate reconstruction and recovery of the Gulf Coast and Florida.