| | CRUSHED GRAVEL - RAPPAHANNOCK RIVER VALLEY NWR, VA | WALKER SAND & STONE, INC | $38,581 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 212312Crushed and Broken Limestone Mining and Quarrying | 5610MINERAL CONSTRUCTION MATERIALS, BULK | May 4, 2020 | May 4, 2020 | Apr 30, 2021 |
| | X:NOGRN, PRWI PURCHASE GRAVEL, SAND&STONE 2018 | WALKER SAND & STONE, INC | $21,457 | NATIONAL PARK SERVICE | NATIONAL PARK SERVICE | — | 327991Cut Stone and Stone Product Manufacturing | 5610MINERAL CONSTRUCTION MATERIALS, BULK | Aug 31, 2018 | Aug 31, 2018 | Nov 30, 2018 |
| | IGF::OT::IGF GRAVEL | WALKER SAND & STONE, INC | $24,459 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 423320Brick, Stone, and Related Construction Material Merchant Wholesalers | Z1LBMAINTENANCE OF HIGHWAYS/ROADS/STREETS/BRIDGES/RAILWAYS | Aug 26, 2016 | Aug 26, 2016 | Dec 31, 2016 |
| | L57 GRAVEL | WALKER SAND & STONE, INC | $5,801 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 212321Construction Sand and Gravel Mining | 5610MINERAL CONSTRUCTION MATERIALS, BULK | Sep 16, 2015 | Sep 15, 2015 | Oct 16, 2015 |
| | GRAVEL DELIVERY | WALKER SAND & STONE, INC | $26,446 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 212321Construction Sand and Gravel Mining | 5610MINERAL CONSTRUCTION MATERIALS, BULK | Sep 11, 2015 | Sep 11, 2015 | Mar 29, 2016 |
| | "IGF::OT::IGF" DELIVER AND SPREAD GRAVE AT THREE UNITS | WALKER SAND & STONE, INC | $11,394 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 212321Construction Sand and Gravel Mining | Z1LBMAINTENANCE OF HIGHWAYS/ROADS/STREETS/BRIDGES/RAILWAYS | Mar 7, 2014 | Mar 7, 2014 | Sep 6, 2014 |
| | DELIVERY OF 505 TONS OF FILL DIRT | WALKER SAND & STONE, INC | $3,131 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 484220Specialized Freight (except Used Goods) Trucking, Local | V112TRANSPORTATION/TRAVEL/RELOCATION- TRANSPORTATION: MOTOR FREIGHT | Sep 13, 2013 | Sep 12, 2013 | Sep 17, 2013 |
| | DELIVERY OF GRAVEL FOR REFUGE ROADS | WALKER SAND & STONE, INC | $14,928 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 327991Cut Stone and Stone Product Manufacturing | Z1LBMAINTENANCE OF HIGHWAYS/ROADS/STREETS/BRIDGES/RAILWAYS | Sep 22, 2012 | Sep 22, 2012 | Jun 3, 2013 |
| | L3 STONE | WALKER SAND & STONE, INC | $5,333 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 212321Construction Sand and Gravel Mining | 9998 | May 26, 2011 | May 26, 2011 | Jul 22, 2011 |
| | CRUSHER RUN GRAVEL | WALKER SAND & STONE, INC | $9,990 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 212321Construction Sand and Gravel Mining | Z222 | May 24, 2011 | Jun 1, 2011 | Dec 30, 2011 |
| | DELIVERY OF FILL DIRT AND STONE. | WALKER SAND & STONE, INC | $0 | U.S. Fish and Wildlife Service | U.S. Fish and Wildlife Service | — | 212321Construction Sand and Gravel Mining | 5610MINERAL CONSTRUCTION MATERIALS, BULK | Aug 10, 2010 | Sep 15, 2010 | Sep 30, 2010 |
| | #3 BLUE STONE | WALKER SAND & STONE, INC | $23,202 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 327992Ground or Treated Mineral and Earth Manufacturing | 5610MINERAL CONSTRUCTION MATERIALS, BULK | Sep 28, 2009 | Sep 28, 2009 | Oct 16, 2009 |
| | 21A GRAVEL | WALKER SAND & STONE, INC | $7,025 | DEPT OF THE NAVY | OFFICE OF PERSONNEL MANAGEMENT | — | 212321Construction Sand and Gravel Mining | 5680MISCELLANEOUS CONSTRUCTION MATERIALS | Dec 22, 2008 | Dec 22, 2008 | Apr 24, 2009 |
| | — | WALKER SAND & STONE, INC | $0 | DEPT OF THE NAVY | — | — | 233320 | Z199 | Oct 1, 2000 | Oct 1, 2000 | — |
| | — | WALKER SAND & STONE, INC | $0 | DEPT OF THE NAVY | — | — | 233320 | Z199 | Oct 1, 2000 | Oct 1, 2000 | — |