 02/19/2013 | CERCLA-08-2013-0001 | RICHARDSON FLAT TAILINGS SITE OPERABLE UNITE #4 - PARK CITY MUNICIPAL CORPORATION | CERCLA |
| 03/19/2013 | CERCLA-08-2013-0002 | EUREKA MILL SUPERFUND SITE and GCL EUREKA PROPERTIES, LLC. and GRANT LOADER | CERCLA |
| 03/21/2013 | CWA-08-2013-0019 | PARACHUTE CREEK GAS PLANT OIL SPILL | CWA |
| 03/26/2013 | CWA-08-2013-0020 | BUREAU OF LAND MANAGEMENT - BLM COLORADO FRONT RANGE DISTRICT | CWA |
| 04/11/2013 | CWA-08-2013-0010 | CITY OF RONAN WASTEWATER TREATMENT FACILITY | CWA |
| 05/01/2013 | CWA-08-2013-0013 | KELLER TRANSPORT, INC. | CWA |
| 05/13/2013 | CERCLA-08-2013-0003 | JEFFERSON CITY RESIDENTIAL YARDS SITE, JEFFERSON CITY, JEFFERSON CITY, MONTANA and MONTANA TUNNELS MINING, INC. | CERCLA 122(h) |
| 06/10/2013 | SDWA-08-2013-0033 | USDA FOREST SERVICE, MEDICINE BOW AND ROUTT NATIONAL FORESTS AND THUNDER BASIN NATIONAL GRASSLANDS (VEDAUWOO CAMPGROUND) | SDWA |
| 06/24/2013 | SDWA-08-2013-0039 | TOWN OF MANVILLE, WY | SDWA |
| 06/28/2013 | CAA-08-2013-0011 | DESERET GENERATION & TRANSMISSION CO-OPERATIVE | CAA |
| 07/08/2013 | CERCLA-08-2013-0004 | AMERICAN LEAD AND ZINC MILL SITE - BLUE TEE CORP. | CERCLA 122(h) |
| 07/08/2013 | SDWA-08-2013-0042 | BIG COTTONWOOD PINE TREE WATER COMPANY, INC. | PWS |
| 07/08/2013 | SDWA-08-2013-0043 | FLYING X RANCH CORP. | SDWA |
| 07/25/2013 | SDWA-08-2013-0045 | LINDA CAPPS, AS TRUSTEE OF THE SPRINGLER FAMILY TRUST; AND THE LEO SPRINGLER REVOCABLE TRUST | SDWA |
| 08/01/2013 | RCRA-08-2013-0001 | JORE CORPORATION | RCRA |
| 08/15/2013 | CWA-08-2013-0024 | URBAN DRAINAGE AND FLOOD CONTROL DISTRICT | CWA |
| 08/27/2013 | SDWA-08-2013-0051 | CONCEPT AUTO BODY | SDWA |
| 08/27/2013 | SDWA-08-2013-0052 | SOUTHFORK ESTATES IMPROVEMENT & SERVICE DISTRICT | SDWA |
| 09/23/2013 | SDWA-08-2013-0061 | MOUNTAIN VILLAGE PARKS, INC. | SDWA |
| 09/24/2013 | CWA-08-2013-0032 | JAMES AND KAY BIANCO | CWA |
| 09/24/2013 | CWA-08-2013-0033 | BIP 40, LLC. | CWA |
| 09/26/2013 | CWA-08-2013-0035 | CORIXA CORPORATION | CWA |
| 09/30/2013 | CWA-08-2013-0037 | CORKLE OIL COMPANY, LLC. | CWA |
| 10/23/2013 | CWA-08-2014-0001 | SMILEY CONSTRUCTION | CWA |
| 11/06/2013 | CWA-08-2014-0006 | LELAND F. WILSON | CWA |
| 01/24/2014 | CERCLA-08-2014-0001 | MOLINE STREET PCB SITE Aurora, Adams County, Colorao (HI TECH PLASTICS, INC.) | CERCLA |
| 01/30/2014 | CERCLA-08-2014-0002 | MOLINE STREET PCB SITE - THE DOW CHEMICAL COMPANY | CERLCA |
| 01/30/2014 | CWA-08-2014-0012 | ANDREW JOHNSON | CWA |
| 02/21/2014 | RCRA-08-2014-0001 | U. S. MAGNESIUM, LLC. | RCRA |
| 02/27/2014 | RCRA-08-2014-0002 | STOCKTON OIL COMPANY - BATTLEFIELD EXPRESS C-STORE | RCRA |
| 03/07/2014 | CWA-08-2014-0014 | CITY OF LOUISVILLE | CWA |
| 03/07/2014 | SDWA-08-2014-0008 | MOUNTAIN VILLAGE PARKS, INC.
DIANA and DANIEL ALEXANDER, OWNERS and/or OPERATORS | SDWA |
| 03/17/2014 | CWA-08-2014-0017 | CITY OF AURORA | CWA |
| 04/30/2014 | SDWA-08-2014-0013 | HR CAMP FOUNDATION | SDWA |
| 06/09/2014 | RCRA(CIT)-08-2014-0001 | HAGEL SERVICE | RCRA |
| 06/16/2014 | CWA-08-2014-0023 | SCOTT WAGNER and LEIGH MARIE, LLC. | CWA |
| 06/16/2014 | SDWA-08-2014-0016 | LINDA AND DAVID CAPPS AND WESTON ENGINEERING, INC. | SDWA |
| 06/23/2014 | CWA-08-2014-0024 | ROBERT GREGG SEASE | CWA |
| 06/26/2014 | CERCLA-08-2014-0005 | TOWN OF EATON, COLORADO | CERCLA |
| 07/15/2014 | CERCLA-08-2014-0006 | LINCOLN PARK SUPERFUND SITE - COTTER CORPORATION (N.S.L) | CERCLA |
| 07/21/2014 | CERCLA-08-2014-0007 | MURRAY LAUNDRY; MURRAY TOWERS, L.C. | CERCLA 122(h) |
| 08/07/2014 | SDWA-08-2014-0026 | HYATTVFILLE SERVICE AND IMPROVEMENT DISTRICT | SDWA |
| 08/07/2014 | SDWA-08-2014-0028 | CITY KIDS TO WILDERNESS PROJECT, INC. | SDWA |
| 08/19/2014 | SDWA-08-2014-0030 | COUNTRY ESTATES MOBILE HOME PARK | PWS |
| 08/19/2014 | SDWA-08-2014-0031 | WARM SPRINGS WATER DISTRICT | SDWA |
| 09/04/2014 | SDWA-08-2014-0038 | LT CAMPGROUNDS, LLC (DBA CUSTER/MOUNT RUSHMORE KOA) | SDWA |
| 09/12/2014 | CWA-08-2014-0030 | GRATECH COMPANY, LTD | CWA |
| 09/17/2014 | SDWA-08-2014-0042 | BEAVERHEAD COUNTY JACKSON WATER AND/OR SEWER DISTRICT | SDWA |
| 09/17/2014 | SDWA-08-2014-0043 | LEISURE VALLEY, INC. | SDWA |
| 09/23/2014 | SDWA-08-2014-0048 | BEAVERHEAD COUNTY JACKSON WATER AND/OR SEWER DISTRICT | SDWA |
| 09/24/2014 | CWA-08-2014-0033 | JC HUNT | CWA |
| 09/28/2014 | SDWA-08-2014-0024 | BEAVERHEAD JACKSON WATER AND SEWER DISTRICT | PWS |
| 09/29/2014 | CAA-08-2014-0015 | WESTERN SUGAR COOPERATIVE/OF BILLINGS, MT & FT MORGAN, CO | CAA |
| 09/29/2014 | SDWA-08-2014-0053 | ASCENTIA REAL ESTATE INVESTMENT COMPANY | SDWA |
| 09/29/2014 | SDWA-08-2014-0055 | TOWN OF PAVILLION | SDWA |
| 09/30/2014 | CAA-08-2014-0016 | MOYLE PETROLEUM COMPANY | CAA |
| 09/30/2014 | CWA-08-2014-0036 | BRAD HALL & ASSOCIATES, INC. | CWA |
| 12/07/2014 | SDWA-08-2015-0003 | SWEETWATER IMPROVEMENT AND SERVICE DISTRICT | SDWA |
| 12/17/2014 | CWA-08-2015-0007 | NEWFIELD PRODUCTION COMPANY | CWA |
| 12/22/2014 | CWA-08-2015-0010 | GLENCOE CAMP RESORT II, LLC.; DEVORAH A. LOPEZ; SEAN CLARK | CWA |
| 01/12/2015 | CWA-08-2015-0011 | DR. THOMAS RICHARDS (LITTLE GOOSE CREEK) | CWA |
| 01/22/2015 | SDWA-08-2015-0006 | ENCORE ENERGY PARTNERS OPERATING LLC. | SDWA |
| 02/04/2015 | CERCLA-08-2015-0001 | EMPIRE STATE OIL CO. (DOUGLAS HUGH WHITT) | CERCLA |
| 02/04/2015 | CERCLA-08-2015-0002 | EMPIRE STATE OIL CO. (DAVID JONES) | CERCLA |
| 02/17/2015 | CERCLA-08-2015-0003 | MURRAY LAUNDRY (PARLEYS PARTNERS, LLC.; ARTESIAN SPRINGS IL, LLC.; HOOPER KNOWLTON III AND DAVID G. BEVAN) | CERCLA |
| 03/31/2015 | RCRA(CIT)-08-2015-0003 | GLACIER WAY C-STORE | RCRA |
| 03/31/2015 | SDWA-08-2015-0009 | STONE GATE ESTATES IMPROVEMENT AND SERVICE DISTRICT and WESTON ENGINEERING | SDWA |
| 04/06/2015 | CWA-08-2015-0014 | THE TOWN OF LODGE GRASS | CWA |
| 05/04/2015 | SDWA-08-2015-0012 | BRUSH CREEK, LLC. | SDWA |
| 05/04/2015 | SDWA-08-2015-0013 | INDIAN CROSSING CAMPGROUND (BUREAU OF LAND MANAGEMENT) | PWS |
| 05/14/2015 | CWA-08-2015-0015 | FOXTAIL CREEK, L.L.C | CWA |
| 05/21/2015 | CERCLA-08-2015-0004 | EAST HELENA RESIDENTIAL SOILS SITE; AMEICAN CHEMET CORPORATION | CERCLA |
| 06/03/2015 | CWA-08-2015-0016 | TOWN OF BROCKTON, MONTANA WASTEWATER TREATMENT FACILITY | CWA |
| 06/08/2015 | CWA-08-2015-0017 | THE CITY OF POPLAR, MONTANA WASTEWATER TREATMENT FACILITY | CWA |
| 06/08/2015 | SDWA-08-2015-0017 | BOUNTIFUL CREEK CAMPGROUND | PWS |
| 06/08/2015 | SDWA-08-2015-0018 | SHADY DELL-SOAPSTONE CAMPGROUND (USDA FOREST SERVICE, UINTA-WASATCH-CACHE NATIONAL FOREST) | SDWA |
| 06/08/2015 | SDWA-08-2015-0019 | TANNERS FLAT CAMPGROUND (USDA FOREST SERVICE, UINTA-WASATCH-CACHE NATIONAL FOREST) | PWS |
| 06/11/2015 | CERCLA-08-2015-0005 | Iron Springs Mining District Site, Uncompahgre National Forest; Union Oil Company of California, Inc. | CERCLA 122(h) |
| 06/11/2015 | CWA-08-2015-0018 | EAGLE BRONZE, INC. | CWA |
| 06/11/2015 | SDWA-08-2015-0021 | LOWER VALLEY ENERGY, INC. AND JOHN RYAN, OPERATOR | SDWA |
| 06/11/2015 | SDWA-08-2015-0022 | TOWN OF FORT LARAMIE | SDWA |
| 06/18/2015 | CAA-08-2015-0014 | U. S. BUREAU OF RECLAMATION, NATIONAL ELECTRIC COIL, ENVIRONMENTAL CONTRACTORS, LLC, AND CTA CONSTRUCTION AND ENVIRONMENTAL LLC. (YELLOWTAIL DAM FACILITY) | CAA |
| 06/18/2015 | RCRA-08-2015-0002 | U. S. BUREAU OF RECLAMATION, NATIONAL ELECTRIC COIL, ENVIRONMENTAL CONTRACTORS, LLC. AND CTA CONSTRUCTION AND ENVIRONMENTAL, LLC. (YELLOWTAIL DAM FACILITY) | RCRA |
| 07/01/2015 | CERCLA-08-2015-0006 | VASQUEZ BOULEVARD/INTERSTATE 70 SITE - OU #2; CITY AND COUNTY OF DENVER | CERCLA |
| 07/01/2015 | CWA-08-2015-0019 | AMERICAN GILSONITE COMPANY | CWA |
| 07/06/2015 | SDWA-08-2015-0024 | RIVERMEADOWS WATER DISTRICT, AND JOHN RYAN | SDWA |
| 07/07/2015 | CWA-08-2015-0020 | NORTHERN CHEYENNE UTILITIES COMMISSION; LAME DEER WASTEWATER TREATMENT FACILITY | CWA |
| 07/23/2015 | SDWA-08-2015-0027 | TOWN OF LABARGE | SDWA |
| 08/03/2015 | FIFRA-08-2015-0004 | FRAN TULLEY - FRESHWATER ORGANICS | FIFRA |
| 08/05/2015 | SDWA-08-2015-0029 | PARIA CONTACT STATION | PWS |
| 08/05/2015 | SDWA-08-2015-0032 | MACKAY INVESTMENTS, LLC. (JACKSON HOLE CAMPGROUND) | SDWA |
| 08/05/2015 | SDWA-08-2015-0033 | USDA FOREST SERVICE, SHOSHONE NATIONAL FOREST (SINKS CANYON CAMPGROUND) | SDWA |
| 08/10/2015 | CERCLA-08-2015-0007 | ELKHORN ST. PESTICIDE SITE, ELKHORN LAND COMPANY, LLC, and LENNAR COLORADO, LLC. | CERCLA 122(h) |
| 08/10/2015 | SDWA-08-2015-0037 | ZION NATIONAL PARK-KOLOB VISITORS CENTER | PWS |
| 08/10/2015 | SDWA-08-2015-0038 | IRON SPRINGS CAMPGROUND | PWS |
| 08/19/2015 | CAA-08-2015-0015 | TESORO REFINING & MARKETING COMPANY, LLC, | CAA |
| 08/31/2015 | SDWA-08-2015-0042 | CORVETTE CENTER OF COLORADO SPRINGS | SDWA |
| 09/09/2015 | SDWA-08-2015-0043 | TRONOX SPECIALTY ALKALI CORPORATION | SDWA |
| 09/11/2015 | CERCLA-08-2015-0008 | UINTAH MINING DISTRICT SITE, UNITED PARK CITY MINES COMPANY | CERCLA |
| 09/14/2015 | SDWA-08-2015-0045 | BUREAU OF INDIAN AFFAIRS - CROW AGENCY, MONTANA | SDWA |
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