| | PORT LOUISA LEVEE REPAIR 2019 | RIVER CONSTRUCTION LLC | $50,000 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 238990All Other Specialty Trade Contractors | Z1KZMAINTENANCE OF OTHER CONSERVATION AND DEVELOPMENT FACILITIES | Sep 20, 2019 | Sep 20, 2019 | Feb 28, 2020 |
| | IGF::OT::IGF MCNEIL TRAIL PROJECT - PORT LOUISA NATIONAL WILDLIFE REFUGE | RIVER CONSTRUCTION LLC | $21,000 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 238990All Other Specialty Trade Contractors | Z2PZREPAIR OR ALTERATION OF OTHER NON-BUILDING FACILITIES | Jul 14, 2016 | Jul 14, 2016 | Sep 30, 2017 |
| | ''IGF::OT::IGF'' PORT LOUISA AUTO TOUR PROJECT | RIVER CONSTRUCTION LLC | $6,550 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 237310Highway, Street, and Bridge Construction | Z1LBMAINTENANCE OF HIGHWAYS/ROADS/STREETS/BRIDGES/RAILWAYS | Apr 24, 2015 | Apr 24, 2015 | Dec 31, 2015 |
| | — | RIVER CONSTRUCTION LLC | $0 | U.S. Fish and Wildlife Service | U.S. Fish and Wildlife Service | — | 423320Brick, Stone, and Related Construction Material Merchant Wholesalers | 9620MINERALS, NATURAL AND SYNTHETIC | Apr 19, 2010 | May 1, 2010 | Sep 30, 2010 |
| | GREEN REQUIREMENT | RIVER CONSTRUCTION LLC | $0 | U.S. Fish and Wildlife Service | — | — | 238910Site Preparation Contractors | F021NATURAL RESOURCES/CONSERVATION- SITE PREPARATION | Feb 18, 2010 | Feb 18, 2010 | Mar 12, 2010 |
| | GOVERNMENT WILL FURNISH CULVERT TO COMPLETE THIS PROJECT. NO EPA DESIGNATED PRODUCTS REQUIREMENT. | RIVER CONSTRUCTION LLC | $1,000 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y299 | Jun 18, 2009 | Jun 18, 2009 | Jul 15, 2009 |
| | — | RIVER CONSTRUCTION LLC | $1,500 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Z299 | May 19, 2009 | May 19, 2009 | Jun 19, 2009 |
| | NOT REQUIRED. | RIVER CONSTRUCTION LLC | $700 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | F021NATURAL RESOURCES/CONSERVATION- SITE PREPARATION | Apr 28, 2009 | Apr 28, 2009 | May 31, 2009 |
| | BASE YEAR 2009 | RIVER CONSTRUCTION LLC | $14,383 | DEPT OF THE ARMY | DEPT OF THE ARMY | — | 238910Site Preparation Contractors | S201HOUSEKEEPING- CUSTODIAL JANITORIAL | Feb 26, 2009 | Feb 26, 2009 | Oct 31, 2011 |
| | DIRT WORK TO REMOVE FLOOD SEDIMENT FROM 2 ACRES OF WETLAND ON THE STEER PROPERTY IN DES MOINES COUNTY, IOWA. | RIVER CONSTRUCTION LLC | $800 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y300 | Sep 10, 2008 | Sep 10, 2008 | Nov 1, 2008 |
| | REPAIR ACCESS ROAD | RIVER CONSTRUCTION LLC | $2,000 | US FISH AND WILDLIFE SERVICE | — | — | 237310Highway, Street, and Bridge Construction | Z222 | Jul 24, 2008 | Jul 24, 2008 | Aug 30, 2008 |
| | WETLAND RESTORATION - NIETERS IN MUSCATINE COUNTY | RIVER CONSTRUCTION LLC | $1,000 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y300 | Jul 10, 2008 | Jul 10, 2008 | Aug 30, 2008 |
| | WETLAND REPAIR | RIVER CONSTRUCTION LLC | $520 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y300 | Jul 10, 2008 | Jul 10, 2008 | Aug 30, 2008 |
| | FIREBREAK MOWING FOR FUELS REDUCTION AT HORSESHOE BEND | RIVER CONSTRUCTION LLC | $2,000 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | F021NATURAL RESOURCES/CONSERVATION- SITE PREPARATION | Sep 20, 2007 | Sep 20, 2007 | Nov 30, 2007 |
| | BRUSH REMOVAL ON UNIT 3 OR HORSESHOE BEND DIVISION | RIVER CONSTRUCTION LLC | $2,500 | US FISH AND WILDLIFE SERVICE | — | — | 562119Other Waste Collection | F021NATURAL RESOURCES/CONSERVATION- SITE PREPARATION | Sep 14, 2007 | Sep 14, 2007 | Oct 30, 2007 |
| | REMOVE WATER CONTROL STRUCTURE AND PLACE NEW ONE ON SNOW GOOSE IN LOUISA COUNTY, IOWA | RIVER CONSTRUCTION LLC | $500 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y300 | Jul 26, 2007 | Jul 26, 2007 | Aug 30, 2007 |
| | WETLAND RESTORATION - JIM WILLIAMS | RIVER CONSTRUCTION LLC | $1,500 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y300 | May 24, 2006 | May 24, 2006 | Sep 15, 2006 |
| | BREAK UP CONCRETE AT OLD SILO SITE ON HORSESHOE BEND, HAUL TO HALLS LAKE STRUCTURE AND PLACE AS RIP RAP. | RIVER CONSTRUCTION LLC | $1,800 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | P500SALVAGE- DEMOLITION OF STRUCTURES/FACILITIES (OTHER THAN BUILDINGS) | Oct 20, 2005 | Oct 20, 2005 | Dec 31, 2005 |
| | RIVERS CONSTRUCTION COMPANY | RIVER CONSTRUCTION LLC | $2,000 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | F006NATURAL RESOURCES/CONSERVATION- LAND TREATMENT PRACTICES | Sep 14, 2005 | Sep 14, 2005 | — |
| | RIVER CONST. - REPAIR WCS AT HSB | RIVER CONSTRUCTION LLC | $1,000 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y299 | Aug 5, 2005 | Aug 5, 2005 | Sep 30, 2005 |
| | RIVER CONS. - REPLACE WATER CONTROL STRUCTURE AND REPAIR ROAD ON HALLS LAKE CROSSING. | RIVER CONSTRUCTION LLC | $1,600 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y299 | Aug 4, 2005 | Aug 4, 2005 | Sep 30, 2005 |
| | RIVER CONST. - RESTORE WETLAND HABITAT ON HSB | RIVER CONSTRUCTION LLC | $1,100 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y299 | Aug 4, 2005 | Aug 4, 2005 | Sep 30, 2005 |
| | RIVER CONSTRUCTION - BERNIE NOLL 3-ACRE WETLAND | RIVER CONSTRUCTION LLC | $800 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y299 | Aug 1, 2005 | Aug 1, 2005 | Oct 31, 2005 |
| | RIVER CONSTRUCTION - DETTMAN WETLAND RESTORATION | RIVER CONSTRUCTION LLC | $1,140 | US FISH AND WILDLIFE SERVICE | — | — | 238910Site Preparation Contractors | Y299 | Jul 20, 2005 | Jul 20, 2005 | Nov 30, 2005 |
| | RIVER CONSTRUCTION - COATES DIKE | RIVER CONSTRUCTION LLC | $1,200 | US FISH AND WILDLIFE SERVICE | — | — | — | Y299 | Mar 16, 2005 | Mar 16, 2005 | Nov 29, 2005 |