26-532EPA-DIROF-B-51385 | CHANGE ORDER NOTICE-TMDL Tetra Tech

This contract amendment involves a change order to an existing agreement between the Illinois Environmental Protection Agency (IEPA) and Tetra Tech, Inc. for the development of Total Maximum Daily Load (TMDL) and Implementation Plans focusing on fecal coliform impairments in the Spoon River watershed and its associated subwatersheds—Fox Creek, Indian Creek, Shaw Creek, and Spoon River. The contract, identified by solicitation number 26-532EPA-DIROF-B-51385 and original contract number WP25610/24-532EPA-WATER-P-73944, increases the contract value from $466,000 to $505,000 by adding $39,000 for expanded technical work. The scope involves water quality assessment and pollutant load modeling consistent with Illinois EPA protocols under the Clean Water Act, producing Stage 1 and Stage 3 TMDL/Implementation Plan Reports for four subwatersheds. Deliverables are scheduled at a unit cost of $18,000 for Stage 1 reports and $32,000 for Stage 3 reports per subwatershed, although these cost proposal figures are not formal line items or contractually guaranteed. Administrative and procedural details indicate the contract is managed from Springfield, Illinois, with no federal FAR clauses included, reflecting state-level procurement standards. Subcontractor oversight requirements stipulate standard Illinois certifications, financial and vendor disclosures for subcontractors exceeding $100,000 in value, and notification of subcontractor changes. While no specific inspection or acceptance criteria are formally documented, these activities occur at the Illinois EPA location in Springfield. Contract communications and vendor points of contact are designated, and while invoice and payment methods are not specified, official agency personnel and points of contact are identified for contract administration. The contract documents lack formal evaluation criteria, packaging requirements, and certain standard contract clause references, emphasizing a focus on technical service deliverables within a defined state procurement framework rather than federal contracting norms.