| GPRA Goal/Annual Target | (SC GG 5.21.1) Perform combined field/laboratory/modeling to determine how to interpret data at widely differing scales. Quantify contaminant immobilization and remobilization using one or a combination of the following potential pathways: natural microbial mechanisms, chemical reactions with materials, and colloid formation. |
| 1st Quarter Measures | Publish peer-reviewed results of first field experiment to stimulate microbial communities to immobilize uranium contamination plume at Uranium Mill Tailings Remediation Action (UMTRA) site in Rifle, Colorado |
| 1st Quarter Results | Yes. Publication in October 2003 issue of Applied & Environmental Microbiology |
| 2nd Quarter Measures | Initiate push-pull experiments to immobilize uranium with humics at the NABIR Field Research Center |
| 2nd Quarter Results | Yes. Preliminary results described at March 2004 NABIR PI meeting (pdf) |
| 3rd Quarter Measures | Complete laboratory microcosm experiments on mechanisms of microbial reoxidation of uranium |
| 3rd Quarter Results | Yes. Results described at March 2004 NABIR PI meeting (pdf) |
| 4th Quarter Measures | Conduct field site monitoring to quantify uranium remobilization at the Old Rifle, CO UMTRA site |
| 4th Quarter Results | Yes. 4th Quarter target and annual target met. Supporting Documentation: Results on NABIR-UMTRA website. |
| Weight | 20% |
