***AMENDMENT 0001*** The USGS Geology Lower Mississippi-Gulf Water Science Center has a requirement to purchase 90 new GPS Tracking units and to be delivered to Little Rock, AR **Delivery Date of Devices - 30 days after receipt of order, Period of Performance for services - 07/20/2026 through 07/19/2027** Request for Quote (RFQ) 140G0126Q0201 **AMD 001** will be issued on or about 07/09/2026 with written quotes due on or about 07/17/2026. The NAICS code is 334513. The size standard is 750 employees. The anticipated award date of the contract is 07/7/2026 A vendor must be registered at https://www.sam.gov/index.html to be awarded the contract. All responsible sources may submit a bid or quotation which shall be considered by the agency. Responses may be emailed to rafael_anderson@ios.doi.gov. Buy American Act applies. Vendors must comply with all applicable domestic sourcing requirements and disclose any foreign end products.