The United States Small Business Administration (SBA) is increasing two small business size standards in North American Industry Classification System (NAICS) Sector 23, Construction, and retaining the current standards for the 30 remaining industries in that Sector. Specifically, SBA is increasing the size standards for NAICS 237210, Land Subdivision, from $7 million in average annual receipts to $25.5 million, and for Dredging and Surface Cleanup Activities, a sub- industry category (or an "exception") under NAICS 237990, Other Heavy and Civil Engineering Construction, from $20 million to $25.5 million. As part of its ongoing comprehensive size standards review, SBA evaluated all size standards in NAICS Sector 23 to determine whether they should be retained or revised.