U.S. Environmental Protection Agency, Contracts Unit, 100 Alabama Strteet, SW, Atlanta, GA 30303

B -- RETAIN/PROCURE SERVICES OF LABORATORY TO CONDUCT ANALYTICAL ANALYSIS ON WATER SOL 00-00024 DUE 063000 POC James B. Gandy, (404) 562-8376. The objective of this request is to retain/procure the services of laboratory or vendor to conduct analytical analysis on water samples to determine the Argon to Krypton ratio of gas within the aqueous sample. EPA is constantly trying to improve the accuracy of its modeling programs and their input parameters. One of the input parameters for waste load allocation water quality modeling is the reaeration rate coefficient for the water body of interest. Sensitivity analysis typically defines reaeration as an input of significant importance. Reaeration rate coefficients are normally estimated using emperial equations not directly measured. This new technique allows for an actual measurement of the oxygen transferred whether than an estimate. The contractor shall analyze water quality samples collected by EPA staff to determine the gaseous krypton to argon ratio in an aqueous solution. The contractor shall utilize the analytical method developed under separate grant with EPA (USAEPA Assistance ID No. x-816988). Samples shall be analyzed within six weeks of delivery. Progress report on data results and financial costs shall be furnished with the completion of each individual stream/estuary project. Reports shall be submitted to the EPA, SESD technical contract within two weeks of completing the sample analysis. This resulting award will be on a purchase order, this is a sole source procurement. Posted 06/23/00 (M-SN468011). (0175)

Loren Data Corp. http://www.ld.com (SYN# 0007 20000627\B-0003.SOL)