| | DEER FLAT NWR - ADA TRAIL ALIGNMENT DESIGN | ALTA SCIENCE & ENGINEERING INC | $142,332 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 541330Engineering Services | C211ARCHITECT AND ENGINEERING- GENERAL: LANDSCAPING, INTERIOR LAYOUT, AND DESIGNING | Aug 22, 2025 | Aug 22, 2025 | Jul 24, 2026 |
| | CIRO 343162 - REHAB UNPAVED ROADS (15% AND SUPP SERVICES) | ALTA SCIENCE & ENGINEERING INC | $64,412 | NATIONAL PARK SERVICE | NATIONAL PARK SERVICE | — | 541330Engineering Services | C211ARCHITECT AND ENGINEERING- GENERAL: LANDSCAPING, INTERIOR LAYOUT, AND DESIGNING | Jul 25, 2025 | Jul 25, 2025 | Apr 1, 2026 |
| | ID-MAGIC VALLEY FH-ALTERNATIVE ANALYSIS | ALTA SCIENCE & ENGINEERING INC | $368,850 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 541330Engineering Services | C219ARCHITECT AND ENGINEERING- GENERAL: OTHER | Sep 24, 2024 | Sep 24, 2024 | Dec 31, 2025 |
| | BARKER HUGHESVILLE MINING DISTRICT ENGINEERING EVALUATION/COST ANALYSIS | ALTA SCIENCE & ENGINEERING INC | $396,058 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | F103ENVIRONMENTAL SYSTEMS PROTECTION- WATER QUALITY SUPPORT | Sep 28, 2023 | Oct 1, 2023 | Jul 31, 2025 |
| | ENGINEERING SERVICES FOR DESIGN WORK ASSOCIATED WITH CONSTRUCTING 2 NEW PREFABRICATED STEEL TRAIL BRIDGES. | ALTA SCIENCE & ENGINEERING INC | $197,269 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | C1LBARCHITECT AND ENGINEERING- CONSTRUCTION: HIGHWAYS, ROADS, STREETS, BRIDGES, AND RAILWAYS | May 5, 2023 | May 5, 2023 | Apr 30, 2024 |
| | NV-ASH MEADOWS NWR- CARSON SLOUGH TRAILS UPPER CARSON SLOUGH BACKCOUNTRY TRAIL SYSTEM SCHEMATIC DESIGN AND PLANNING SERVICES | ALTA SCIENCE & ENGINEERING INC | $278,596 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 541330Engineering Services | C211ARCHITECT AND ENGINEERING- GENERAL: LANDSCAPING, INTERIOR LAYOUT, AND DESIGNING | Jan 27, 2023 | Jan 27, 2023 | Aug 5, 2025 |
| | WHITE KING/LUCKY LASS ANNUAL MONITORING | ALTA SCIENCE & ENGINEERING INC | $278,964 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | C215ARCHITECT AND ENGINEERING- GENERAL: PRODUCTION ENGINEERING | Sep 6, 2022 | Sep 6, 2022 | Mar 29, 2024 |
| | WHITE KING LUCKY LASS FY22 GAMMA SURVEY AND REPORTING | ALTA SCIENCE & ENGINEERING INC | $69,989 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | C215ARCHITECT AND ENGINEERING- GENERAL: PRODUCTION ENGINEERING | Jun 3, 2022 | Jun 3, 2022 | Aug 18, 2023 |
| | REMOVAL ACTION DESIGN PACKAGE FOR THE CHAMPION MINE 900 & 1200 LEVEL ADITS. | ALTA SCIENCE & ENGINEERING INC | $347,294 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | C215ARCHITECT AND ENGINEERING- GENERAL: PRODUCTION ENGINEERING | Jun 26, 2021 | Jun 26, 2021 | Nov 30, 2024 |
| | AZURITE LONG TERM MONITORING | ALTA SCIENCE & ENGINEERING INC | $169,829 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | C215ARCHITECT AND ENGINEERING- GENERAL: PRODUCTION ENGINEERING | Apr 2, 2019 | Apr 2, 2019 | Sep 30, 2022 |
| | WHITE KING LUCKY LASS MONITORING | ALTA SCIENCE & ENGINEERING INC | $176,421 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | C215ARCHITECT AND ENGINEERING- GENERAL: PRODUCTION ENGINEERING | Sep 22, 2018 | Sep 22, 2018 | May 11, 2022 |
| | A/E MINE IDIQ MIN GUARANTEE | ALTA SCIENCE & ENGINEERING INC | $0 | FOREST SERVICE | FOREST SERVICE | — | 541330Engineering Services | C215ARCHITECT AND ENGINEERING- GENERAL: PRODUCTION ENGINEERING | Aug 28, 2018 | Aug 28, 2018 | Aug 28, 2023 |
| | EXPERT WITNESS SERVICES JOHN MEANS - US V. HOWELL DJ FILE # 90-6-6-01105 GOV'T POC: SAMUEL GOLLIS PERIOD OF PERFORMANCE: 10/18/2016 THRU 04/30/2022 | ALTA SCIENCE & ENGINEERING INC | $413,132 | OFFICES, BOARDS AND DIVISIONS | OFFICES, BOARDS AND DIVISIONS | — | 541199All Other Legal Services | R424SUPPORT- PROFESSIONAL: EXPERT WITNESS | Aug 3, 2018 | Aug 3, 2018 | Feb 1, 2028 |