Delivery Order 68HERW26D0007-68HERW26F0193

The EPA Office of Water issued a delivery order to Tetra Tech, Inc. on February 1, 2027, for the National Lakes Assessment 2027 plankton identification effort, with a ceiling value of $1,474,750 and an ultimate completion date of December 20, 2028.

Place of performance is Fairfax, VA. The order is firm fixed price. Tetra Tech is a large for-profit environmental and engineering consulting firm with substantial federal contracting volume concentrated in water quality, ecological assessment, and infrastructure support. The vendor operates without small business designations and competes in full-and-open procurements. EPA entities represent roughly 60% of Tetra Tech's recent prime footprint by dollar volume, anchored by the EPA Office for Water and Office of Research and Development; the vendor holds multiple single-award and multiple-award indefinite delivery vehicles with the EPA, with task order issuance as the primary scaling mechanism for delivery.