 CERCLA-08-2010-0002 | Closed | 02/12/2010 | COLORADO BUMPER EXCHANGE |
| CERCLA-08-2010-0003 | Active | 05/10/2010 | BILLINGS PCE SITE; J.E.M., LLC. |
| CERCLA-08-2010-0004 | Active | 09/13/2010 | ANACONDA SMELTER SUPERFUND SITE, REGIONAL WATER, WASTE, AND SOILS OPERABLE UNIT, FLUVIAL TAILINGS REMEDIAL DESIGN UNIT; ATLANTIC RICHFIELD COMPANY |
| CERCLA-08-2010-0005 | Active | 09/13/2010 | ANACONDA SMELTER SUPERFUND SITE, REGINAL WATER, WASTE, AND SOILS OPERABLE UNIT, EAST PORTION ACTIVE RAILROAD/BLUE LAGOON REMEDIAL DESIGN UNIT, WEST PORTION - ATLANTIC RICHFIELD CO., RARUS RAILWAY CO., |
| CERCLA-08-2010-0006 | Active | 09/16/2010 | KERBER CREEK SITE - TROUIT UNLIMITED, INC., GOOD SAMARITAN |
| CERCLA-08-2010-0007 | Awaiting Payment/SEP | 09/30/2010 | CATTLEMAN'S CHOICE LOOMIX, LLC. |
| CERCLA-08-2011-0001 | Active | 12/21/2010 | STANDARD MINE SITE - ELIJAH J. VALENCIA |
| CERCLA-08-2011-0002 | Active | 01/12/2011 | UNION PACIFIC RAILROAD - 80TH AVENUE TANK FARM SITE |
| CERCLA-08-2011-0003 | Active | 03/02/2011 | RICHFIELD PCE SITE - MR. JERRY K. THOMAS and MRS. KATRINA M. THOMAS |
| CERCLA-08-2011-0004 | Active | 03/07/2011 | INTERNATIONAL SMELTING AND REFINING SITE - ATLANTIC RICHFIELD CO. |
| CERCLA-08-2011-0005 | Active | 03/17/2011 | RICO-ARGENTINE SITE - ALTANTIC RICHFIELD CO. |
| CERCLA-08-2011-0007 | Active | 03/23/2011 | 10,000 HAVANA - CRICKET MASCARENAS |
| CERCLA-08-2011-0008 | Active | 05/12/2011 | UPPER ANIMAS MINING DISTRICT SITE - TODD C. HENNIS, SAN JUAN CORPORATION , AND SALEM MINERALS, INC. |
| CERCLA-08-2011-0009 | Active | 06/02/2011 | ANACONDA SMELTER SUPERFUND SITE, REGIONAL WATER, WASTE, AND SOILS OPERABLE UNIT, SMELTER HILL FACILITIES ARE REMEDIAL DESIGN UNIT - ATLANTIC RICHFIELD COMPANY |
| CERCLA-08-2011-0010 | Active | 06/16/2011 | BARKER-HUGHESVILLE SUPERFUND SITE CASCADE AND JUDITH BASIN COUNTIES, MONTANA - THE DOE RUN RESOURCES CORP. |
| CERCLA-08-2011-0011 | Active | 07/20/2011 | BUTTE PRIORITY SOILS OPERABLE UNIT OF THE SILVER BOW CREEK/BUTTE AREA (BUTTE PORTION) SITE |
| CERCLA-08-2011-0012 | Active | 08/03/2011 | 10,000 HAVANA SUPERFUND SITE (Bernard (Leo) Long) |
| CERCLA-08-2011-0013 | Active | 08/04/2011 | U. S. MAGNESIUM SITE - U. S. MAGNESIUM LLC. |
| CERCLA-08-2011-0014 | Closed | 08/25/2011 | LOCKWOOD SOLVENT GROUND WATER PLUME - SOCO WEST, INC. |
| CERCLA-08-2011-0015 | Active | 08/26/2011 | BOUNTIFUL/WOODS CROSS/5TH SOUTH PCE PLUME NPL SITE - SECURITY INVESTMENT LTD. |
| CERCLA-08-2011-0016 | Active | 09/20/2011 | BOUNTIFUL WOODS CROSS/5TH SOUTH PCE PLUME NPL SITE - DAVIS COUNTY |
| CERCLA-08-2011-0017 | Active | 09/08/2011 | ACM SMELTER AND REFINERY SITE - OPERABLE UNIT #1 ATLANTIC RICHFIELD CO., ARCO ENVIRONMENTAL REMEDIATION, L.L.C. |
| CERCLA-08-2011-0018 | Active | 09/29/2011 | GRANITE TIMBER POST AND POLE - MARGERY METESH |
| CERCLA-08-2011-0019 | Active | 09/29/2011 | GRANITE TIMBER POST AND POLE - MARK METESH |
| CERCLA-08-2012-0001 | Active | 11/30/2011 | RAILROAD CORRIDOR OPERABLE UNIT 1 ACM SMELTER AND REFINERY SITE - BNSF RAILWAY COMPANY |
| CERCLA-08-2012-0002 | Active | 12/01/2011 | OPHIR MILLS AND SMELTER SITE - ATLANTIC RICHFIELD COMPANY |
| CERCLA-08-2012-0004 | Active | 09/17/2012 | LIBBY ASBESTOS SITE, OU 3 - W.R. GRACE & CO. - CONN. AND KOOTENAI DEVELOPMENT CORPORATION |
| CERCLA-08-2013-0001 | Active | 02/19/2013 | RICHARDSON FLAT TAILINGS SITE OPERABLE UNITE #4 - PARK CITY MUNICIPAL CORPORATION |
| CERCLA-08-2013-0002 | Active | 03/19/2013 | EUREKA MILL SUPERFUND SITE and GCL EUREKA PROPERTIES, LLC. and GRANT LOADER |
| CERCLA-08-2013-0003 | Active | 05/13/2013 | JEFFERSON CITY RESIDENTIAL YARDS SITE, JEFFERSON CITY, JEFFERSON CITY, MONTANA and MONTANA TUNNELS MINING, INC. |
| CERCLA-08-2013-0004 | Active | 07/08/2013 | AMERICAN LEAD AND ZINC MILL SITE - BLUE TEE CORP. |
| CERCLA-08-2014-0001 | Active | 01/24/2014 | MOLINE STREET PCB SITE Aurora, Adams County, Colorao (HI TECH PLASTICS, INC.) |
| CERCLA-08-2014-0002 | Active | 01/30/2014 | MOLINE STREET PCB SITE - THE DOW CHEMICAL COMPANY |
| CERCLA-08-2014-0003 | Active | | RICHARDSON FLAT TAILINGS SITE OPERABLE UNITS 2 AND 3 - UNTIED PARK CITY MINES COMPANY |
| CERCLA-08-2014-0005 | Active | 06/26/2014 | TOWN OF EATON, COLORADO |
| CERCLA-08-2014-0006 | Active | 07/15/2014 | LINCOLN PARK SUPERFUND SITE - COTTER CORPORATION (N.S.L) |
| CERCLA-08-2014-0007 | Active | 07/21/2014 | MURRAY LAUNDRY; MURRAY TOWERS, L.C. |
| CERCLA-08-2015-0001 | Active | 02/04/2015 | EMPIRE STATE OIL CO. (DOUGLAS HUGH WHITT) |
| CERCLA-08-2015-0002 | Active | 02/04/2015 | EMPIRE STATE OIL CO. (DAVID JONES) |
| CERCLA-08-2015-0003 | Active | 02/17/2015 | MURRAY LAUNDRY (PARLEYS PARTNERS, LLC.; ARTESIAN SPRINGS IL, LLC.; HOOPER KNOWLTON III AND DAVID G. BEVAN) |
| CERCLA-08-2015-0004 | Active | 05/21/2015 | EAST HELENA RESIDENTIAL SOILS SITE; AMEICAN CHEMET CORPORATION |
| CERCLA-08-2015-0005 | Active | 06/11/2015 | Iron Springs Mining District Site, Uncompahgre National Forest; Union Oil Company of California, Inc. |
| CERCLA-08-2015-0006 | Active | 07/01/2015 | VASQUEZ BOULEVARD/INTERSTATE 70 SITE - OU #2; CITY AND COUNTY OF DENVER |
| CERCLA-08-2015-0007 | Closed | 08/10/2015 | ELKHORN ST. PESTICIDE SITE, ELKHORN LAND COMPANY, LLC, and LENNAR COLORADO, LLC. |
| CERCLA-08-2015-0008 | Active | 09/11/2015 | UINTAH MINING DISTRICT SITE, UNITED PARK CITY MINES COMPANY |
| CERCLA-08-2015-0009 | Active | 09/16/2015 | ROCKY FLATS INDUSTRIAL PARK SITE - COLUMBINE STATEGICS LLC. |
| CERCLA-08-2015-0010 | Active | 09/24/2015 | ANACONDA SMELTER SUPERFUND SITE, REGIONAL WATER, WASTE, AND SOILS OPERABLE UNIT, WARM SPRINGS CREEK REMEDIAL DESIGN UNIT - ATLANTIC RICHFIELD COMPANY |
| CERCLA-08-2015-0011 | Active | 09/24/2015 | ANACONDA SMELTER SUPERFUND SITE, COMMUNITY SOILS OPERABLE UNIT - ATLANTIC RICHFIELD COMPANY |
| CERCLA-08-2016-0001 | Active | 11/12/2015 | SMURFIT STONE MILL SITE - INTERNATIONAL PAPER COMPANY; WESTROCK CP., LLC.; M2 GREEN REDEVELOPMENT LLC. |
| CERCLA-08-2016-0002 | Active | 11/30/2015 | COLUMBIA FALLS ALUMINUM PLANT a/k/a ANACONDA ALUMINUM CO., COLUMBIA FALLS REDUCTION PLANT; COLUMBIA FALLS ALUMINUM COMPANY LLC. |
| CERCLA-08-2016-0003 | Active | 05/26/2016 | LINCOLN PARK SUPERFUND SITE |
| CERCLA-08-2016-0004 | Active | 05/31/2016 | BULLION CANYON MILLS SITE - CROWN MINES LLC |
| CERCLA-08-2016-0005 | Active | 06/22/2016 | ANACONDA SMELTER SUPERFUND SITE & ATLANTIC RICHFIELD COMPANY |
| CERCLA-08-2016-0006 | Active | 09/07/2016 | EMPIRE STATE OIL Co. |
| CERCLA-08-2016-0007 | Active | 09/12/2016 | MAZEPPAH MINE WASTE SITE |
| CERCLA-08-2017-0001 | Active | 01/19/2017 | UINTAH MINING DISTRICT SITE, OPERABLE UNIT 1 |
| CERCLA-08-2017-0002 | Active | 02/01/2017 | QUARTZ HILL TAILINGS PILE W/IN CENTRAL CITY/CLEAR CREEK SUPERFUND SITE |
| CERCLA-08-2017-0003 | Closed | 05/09/2017 | EP ENERGY E&P COMPANY, LP |
| CERCLA-08-2017-0004 | Active | 05/11/2017 | SUNNYSIDE GOLD CORPORATION |
| CERCLA-08-2017-0005 | Active | 07/10/2017 | BARKER HUGHESVILLE MINING DISTRICT SUPERFUND SITE |
| CERCLA-08-2017-0006 | Active | 07/10/2017 | CARPENTER SNOW CREEK MINING DISTRICT SUPERFUND SITE |
| CERCLA-08-2017-0007 | Active | 07/31/2017 | CAMP BIRD MINE SITE |
| CERCLA-08-2018-0001 | Active | 11/15/2017 | JEFFERSON CITY, RESIDENTIAL YARDS SITE |
| CERCLA-08-2018-0002 | Active | 11/28/2017 | NEUHAUSER LANDFILL, STRATUS REDTAIL RANCH LLC |
| CERCLA-08-2018-0003 | Active | 12/14/2017 | COLUMBIA FALLS ALUMINUM PLANT |
| CERCLA-08-2018-0004 | Active | 02/12/2018 | GILT EDGE MINE SITE |
| CERCLA-08-2018-0005 | Active | 03/15/2018 | SUNNYSIDE GOLD CORPORATION |
| CERCLA-08-2018-0006 | Active | 05/04/2018 | ACM Smelter & Refinery Site; Atlantic Richfield Company & ARCO Environmental Remediation, LLC |
| CERCLA-08-2018-0007 | Active | 05/30/2018 | EAGLE MINE SUPERFUND SITE |
| CERCLA-08-2018-0008 | Active | 07/02/2018 | FOURMILE WATERSHED COALITION, FOUR MILE FIRE PROTECTION DISTRICT |
| CERCLA-08-2018-0009 | Active | 07/27/2018 | EAGLE MINE SUPERFUND SITE, BATTLE NORTH, LLC, AND BATTLE SOUTH, LLC |
| CERCLA-08-2019-0001 | Active | 11/15/2018 | ACM SMELTER AND REFINERY SITE, ATLANTIC RICHFIELD COMPANY & ARCO ENVIRONMENTAL REMEDIATION, LLC |
| CERCLA-08-2019-0002 | Active | 07/11/2019 | RICHARDSON FLAT LOWER SILVER CREEK SETTLEMENT |
| CERCLA-08-2019-0003 | Active | 08/15/2019 | THE BEN FRANKLIN MINE; EUREKA GULCH PROPERTIES LLC AND RYAN BENNETT |
| CERCLA-08-2019-0004 | Active | 08/20/2019 | SILVER BOW CREEK/BUTTE AREA SUPERFUND SITE |
| CERCLA-08-2019-0005 | Active | 08/29/2019 | STATE PAINTING SITE, WEST VALLEY CITY, UTAH; JORDAN VALLEY WATER CONSERVANCY DISTRICT GUARANTEE COMPANY OF NORTH AMERICA |
| CERCLA-08-2020-0001 | Active | 06/12/2020 | UNITED STATES DEPARTMENT OF THE ARMY, ROCKY MOUNTAIN ARSENAL |
| CERCLA-08-2020-0002 | Active | 07/22/2020 | COLUMBIA FALLS ALUMINUM COMPANY a/k/a ANACONDA CO. COLUMBIA FALLS REDUCTION PLANT |
| CERCLA-08-2020-0003 | Active | 08/25/2020 | ILLINOIS GULCH SUPERFUND SITE TABR REALTY SERVICES, LLC |
| CERCLA-08-2020-0004 | Active | 09/03/2020 | BONITA PEAK MINING DISTRICT SITE; SUNNYSIDE GOLD CORPORATION |
| CERCLA-08-2021-0001 | Active | 12/03/2020 | LOCKWOOD SOLVENT GROUND WATER PLUME SUPERFUND SITE; MAC LTT, LLC AND MAC LTT MANUFACTURING |
| CERCLA-08-2021-0002 | Active | 01/06/2021 | BONITA PEAK MINIG DISTRICT SITE, SAN JUAN COUNTY, COLORADO; TODD C. HENNIS |
| CERCLA-08-2021-0003 | Active | 02/03/2021 | LODGE GRASS DRUM SITE; DONNA BENDS |
| CERCLA-08-2021-0004 | Active | 02/26/2021 | SMURFIT STONE MILL SITE |
| CERCLA-08-2021-0005 | Active | 03/17/2021 | RICHARDSON FLAT TAILINGS SITE; BIG HOSS PROPERTIES, LLC |
| CERCLA-09-2007-0001 | Closed | | Romic Environmental Technologies Corp. |
| CERCLA-09-2007-0002 | Closed | | Western Precooling Systems, Inc. |
| CERCLA-09-2007-0003 | Closed | | Diamond Oaks Winery |
| CERCLA-09-2007-0004 | Closed | | The Pictsweet Company |
| CERCLA-09-2008-0001 | Active | | Bridgford Foods Corporation |
| CERCLA-09-2008-0002 | Active | | Nor-Cal Beverage Company, Inc. |
| CERCLA-09-2008-0003 | Active | | Super Store Industries |
| CERCLA-09-2009-0001 | Active | | Granite Capital, LLC dba Crystal Clear Ice and Water |
| CERCLA-09-2009-0002 | Active | | Turlock Cold Storage |
| CERCLA-09-2009-0003 | Active | | Linde LLC |
| CERCLA-09-2009-0004 | Active | | Orange County Ice |
| CERCLA-09-2011-0001 | Closed | | Luz Solar Partners Ltd |
| CERCLA-09-2012-0001 | Closed | | Philips Lumileds Lighting Company |
| CERCLA-09-2012-0002 | Closed | | Cyanco |
| CERCLA-09-2013-0001 | Closed | | Ventura Foods, LLC |
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