Rocky Mountain Steel Mill Solid Waste Management Units Status Summary

SWMU # and Name RFI Status CMS Status Corrective Action Status No Further Action Status #1 - South Dump and Stations A, C, and D #2 Harlem Dump #3 East Slag Pile #6 - Coal Washery Waste Fines
Impoundments #8 Fountain Sand- and Gravel-Filled Lake #9 North Mills Clarifier Lagoon #10 New Final Treatment Lagoon #11 Old Final Treatment Lagoon #12 - #2 STM Lagoon on Salt Creek #13 South Mills Sludge Basins A&B; South
Mills Finishing Basins #14 South Mills Oil Skimmer and Waste
Oil Tanks #15 Wire Mill Plant treatment Clarifier and
Settling Basins
#16 Black Lake #17 Ore Preparation Clean-Out Pit #18 Coke Plant Surge Pit, Oil Skimmer,
and Waste Oil Tank N/A #19 Blast Furnace Filter Press, Conveyor
Belt, and Loading Area N/A #20 Blast Furnace Clarifier, Settling Basin,
and Cooling Tower Sump N/A #21 BOF Sparkbox Clarifier and Sludge
Basins N/A #22 No. 1 Continuous Caster Scale Pit and
Sump #23 No. 2 Continuous Caster Scale Pit #24 East Rail Mill Scale Pit #25 Rod Mill Rougher Scale Pit #26 Rod Mill Finishing Scale Pit #27 Seamless Pipe Mill No. 1 Piercer Scale
Pit #28 - Seamless Pipe Mill No. 2 Piercer Scale
Pit #29 - Seamless Pipe Mill Stretch Scale Pit #30 11-inch Bar Mill Rougher Scale Pit Rocky Mountain Steel Mills Solid Waste Management Unit (SWMU) Status Summary May 2007 2023 2017 2021 2015 2013 2009 2007 2012 2011 2011 2011 2007 2007 2008 Work Plan Approved and
in Progress Report Approved Awaiting Class 3 Permit Modification
Request from RMSM Complete Additional Soil Characterization
Requested by Division Report Received and Under Review by Hazardous
Materials and Waste Management Division Covenant or Post-Closure
Monitoring Legend 2009 2012 2012 SWMU # and Name RFI Status CMS Status Corrective Action Status No Further Action Status Rocky Mountain Steel Mills Solid Waste Management Unit (SWMU) Status Summary May 2007 #31 11-inch Bar Mill Finishing Scale Pit #32 14-inch Mill Rougher Scale #33 14-Inch Mill Finishing Scale Pit #34 14-Inch Mill U-Shaped #35 20-Inch Mill Scale Pit #36 25-Inch Mill 3-High Scale Pit #37 25-Inch Mill Rougher Scale Pit #38 25-Inch Mill Finishing Scale Pit #39 40-Inch Mill Scale Pit #40 45-Inch Mill Scale Pit #41- Bell Mill North Scale Pit #42 Bell Mill South Scale Pit #43 Grader Blade Scale Pit #46 Storage Tank Sump and Waste Oil
storage Tanks #49 Coal Washery Sump and Settling
Basins #50 BOF Gas Cleaning Silo and Loadout N/A #51 North and South EAF Baghouse and
Silo #52 Wastewater Drains
a, c, d, e, f, g and h #52 Wastewater Drains
b, h, i and j #53 Coal Washery Slurry Pipe #54 Former Ammonium Sulfate
Impoundment #55 Wire Mill Ditch #56 Aeration Basins No.l through 4
(Sanitary Sewer Drying Beds) #57 Spent Pickle Liquor Tank Site #58 Special Bar Quality Baghouse (West) #59 - Special Bar Quality Baghouse (East) #60 Current Nail Galvanizing Baghouse
and Dust Box 2009 2010 2010 2010 2011 2011 2021 2020 2018 2012 2014 2014 2014 Work Plan Approved and
in Progress Report Approved Awaiting Class 3 Permit Modification
Request from RMSM Complete Additional Soil Characterization
Requested by Division Report Received and Under Review by Hazardous
Materials and Waste Management Division Covenant or Post-Closure
Monitoring Legend 2008 2009 2010 SWMU # and Name RFI Status CMS Status Corrective Action Status No Further Action Status Rocky Mountain Steel Mills Solid Waste Management Unit (SWMU) Status Summary May 2007 #62 Tar Decanter Tanks Waste Access
Handling Areas #63 Tar Decanter Tanks #65 Nail Degreasing Accumulation Tank
Area #66- Waste Oil Dump Tank #67 South Mills Clarifier #68 Coal Washery Clarifier #69 Venturi Scrubber Sludge Basin and
Dry Dust Collector Cyclone N/A #70 Ladle Treatment Baghouse and
Loadout N/A #71 Coke Plant Scrubber Water Clarifiers,
Drip Track Sump, Quench Sump #72 Benzol Yard #73 Diesel Repair House Recovery Tank #75 Diesel Fuel Storage Tank Site,
Pumphouse Site 2, etc. #77 Biotreatment Plant #78 Desulfurizer Baghouse Loadout #79 IMS Underground Waste Oil Tank #80 Blast Furnace Electrostatic
Precipitators Loadout #81 Nail Quenching Sumps #82 Selenium in Ground Water Lead Pan units 2015 2021 2010 2016 2022 2005 2005 2004 Work Plan Approved and
in Progress Report Approved Awaiting Class 3 Permit Modification
Request from RMSM Complete Additional Soil Characterization
Requested by Division Report Received and Under Review by Hazardous
Materials and Waste Management Division Covenant or Post-Closure
Monitoring Legend

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