Document YDRJREnd1bL51jB5aooBOJ1Oy

CWA COMPLIANCE EVALUATION INSPECTION REPORT U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 5 Purpose: Compliance Evaluation Reconnaissance Inspection Facility: Cleveland Cliffs Burns Harbor, LLC 250 US-12 Burns Harbor, Indiana 46304 Porter County 41.625, -87.117 NPDES Permit Number: IN0000175 Date of Inspection: July 12, 2021 EPA Representatives: Joan Rogers, Environmental Scientist Rogers.joan@epa.gov State Representatives: Nicholas Ream, Indiana Department of Environmental Management Wastewater Inspector nream@idem.IN.gov Robert Lugar, Indiana Department of Environmental Management RLugar@idem.IN.gov Facility Representatives: Tom Maicher, Manager of the Environmental Plant Robert.maciel@ClevelandCliffs.com Morgan Swanson, Environmental Engineer Morgan.swanson@ClevelandCliffs.com Cary Mathias, Regional Waste Manager Cary.mathias@ClevelandCliffs.com Patrick Gorman, Operator Patrick.gorman@ClevelandCliffs.com Courtney Zunica -Notetaker for Cleveland Cliffs Burns Harbor 312-886-2785 219-730-1691 317-234-6019 219-787-4961 219-787-2646 330-659-9124 Cleveland Cliffs Burns Harbor July 12, 2021 Matt Hausman, Operation Manager for Ramboll Group Company Nathan Nowicki, Process Engineer for Centrisys Corporation Report Prepared by: Joan Rogers JOAN Digitally signed by JOAN ROGERS ROGERS Date: 2021.08.26 Inspector Signature: _________________1_2_:1_4_:1_4__-0_5_'0_0_' _________________________ Approver Name and Title: _Ryan Bahr, Chief, Section 2, WECAB______________ RYAN Digitally signed by RYAN BAHR BAHR Date: 2021.08.27 Approver Signature/Date: ________________1_3_:2_8_:2_8_-_0_5'_0_0'_______________________ 1. BACKGROUND The purpose of this report is to describe and document the reconnaissance inspection at the Cleveland Cliffs Burns Harbor facility on July 12, 2021. This inspection was performed pursuant to Section 308(a) of the Federal Water Pollution Control Act, as amended. This was a joint inspection by EPA and the Indiana Department of Environmental Management (IDEM). The Cleveland Cliffs Burns Harbor (CCBH) facility is one of the largest fully integrated steel mills in North America, with the capacity to produce approximately 5 million tons of raw steel per year. They operate under NPDES Permit No. IN0000175, which was issued on May 27, 2016 and expires on June 30, 2021. A permit renewal application has been submitted to IDEM. The facility was previously owned by ArcelorMittal and was known as ArcelorMittal Burns Harbor. The inspection on July 12, 2021 was a Compliance Evaluation Reconnaissance Inspection to discuss recent power failures and a reported phenols exceedance that was rescinded. IDEM inspector Mr. Nick Ream notified Mr. Tom Maicher and Ms. Morgan Swanson of the inspection on June 24, 2021. On July 7, 2021, Mr. Ream notified Mr. Maicher and Ms. Swanson that the inspectors wished to discuss the new ammonia treatment process, the lagoon influent channel dredging, the recent power failures at Waste Water Pump Stations #1 and #2 (WWPS 1 and WWPS 2), the May 20, 2021 phenols analysis, and the status of the diversion of the RSB thickener overflow to a centrifuge. The inspectors also wanted to observe the new ammonia treatment process and the Secondary Wastewater Treatment Plant (SWTP) while they were on site. 2 2. SITE INSPECTION Cleveland Cliffs Burns Harbor July 12, 2021 Site Entry and Opening Conference Arrival Time: 9:30 A.M. Presented credentials? Yes. Credentials presented to whom and at what time? 9:30 A.M. to Tom Maicher, Cary Mathias, Pat Gorman, Morgan Swanson, and Courtney Zunica. Was an opening conference held? With whom? Yes. Ms. Swanson, Mr. Maicher, Mr. Mathias, Mr. Gorman, and Ms. Zunica. If photographs or documents were taken, does the facility consider No. any to be Confidential Business Information (CBI)? Which information does the facility consider to be CBI? None. EPA vehicle parked in approved location? Yes. Location where EPA vehicle was parked? Environmental Services Building. EPA inspector, Ms. Joan Rogers, and IDEM inspectors Mr. Bob Lugar and Mr. Nick Ream followed Ms. Swanson to the Environmental Services Building conference room from the main office where EPA and IDEM inspectors received their visitor badges. The inspection team explained that the purpose of the inspection was to discuss the issues that were shared via email on July 7, 2021. Ammonia Treatment Process The conversation began with a description of ammonia treatment from the Blast Furnace Recycle System (BFRS) blowdown. Cleveland Cliffs representatives explained that the temporary system has been reducing ammonia by half of the limit or approximately 175 lb/day or 375 lb/7-day average. Breakpoint chlorination at the end of the process brings the ammonia down to 2ppm or less. The chlorine would also destruct cyanide if needed. Since they added water softening before the cooling towers to prevent build-up of solids in the towers, the system has been removing more ammonia than previously. Mr. Mathias provided two diagrams of the Outfall 001 Ammonia-Mass Discharge from 2020 and 2021. These are attached to this report as Attachment B. Solids from the Reclamation Services Building (RSB) thickener underflow are removed with three centrifuges and the centrate is returned back to the BFRS. Recently, the facility personnel noticed that the polymer added to the line to the three centrifuges was not being utilized evenly by each centrifuge. This caused clogging at some centrifuges when the flow was low. Facility personnel intend to inject the polymer to each individual centrifuge in the future, so it is more even. Facility personnel are still working through understanding the dynamics of the system. Starting in mid-September, the facility will begin removing the temporary ammonia treatment system but will still run a cooling tower for ammonia reduction. The water is heated to 120 before going to the cooling tower. The cooling tower alone is estimated to remove approximately 60% of the ammonia. 3 Lagoon Influent Dredging Cleveland Cliffs Burns Harbor July 12, 2021 One of the three bidders for the lagoon influent dredging project performed a test of the dredging to document what controls were going to be needed to prevent solids from the dredging operation to flow out the outfalls and potentially cause a permit exceedance. The bidder lined the channel with booms and took 8-10 test scoops from the influent channel. A plume of sediment was observed and CCBH personnel realized that there would need to be additional precautions taken before the project could be awarded to any company. The dredging is on hold until at least Spring 2022 while CCBH explores ways to mitigate the possibility of a permit exceedance while the sediment is removed. CCBH sent the sediment that was removed out for analysis. The sediment has high concentrations of iron and about 5% oil and grease. EPA and IDEM requested copies of the sample analysis. Mr. Maicher sent that information on July 29, 2021. The sediment analysis report is Attachment C of this inspection report. Recent Power Failures at Waste Water Pump Stations #1 and #2 On May 24, 2021, CCBH experienced a power failure at the SWTP Operator Control room which caused the pump to stop at WWPS 2. The water level rose and overflowed approximately 21,700 gallons of untreated wastewater to the Storm Ditch which flows to Outfall 001. After approximately 6 minutes, operators were able to restore power, restart the two pumps and lower the water level below the overflow point. On June 21, 2021, CCBH experienced another power failure, although just a power dip, during a thunderstorm. The power dip was at the SWTP and WWPS 1, which caused the Hot Mill & Cold Mill pumps to stop pumping. This caused an overflow at Manhole 120 (MH120) for a maximum of five minutes and an estimated 107,000 gallons of untreated water to flow to the Storm Ditch. CCBH provided IDEM with Bypass/Overflow Incident Reports via email. During the inspection, Mr. Maicher explained that a study is being conducted to address the power issues. They are looking at the power feeds to all wastewater operations and installing Uninterruptable Power Supplies (UPS) at all the Programmable Logic Controllers (PLCs) for wastewater operations. Additionally, Northern Indiana Public Service Company (NIPSCO) is installing automatic switching for the dual electric feeds. EPA and IDEM requested the list of locations where CCBH has identified the need for UPS installation. Mr. Maicher stated that he would provide that to the Agencies. May 20, 2021 Phenols Analysis On May 20, 2021, CCBH received notification from Microbac Laboratories, Inc., their contract laboratory, that there was a sample that showed elevated phenols at Outfall 001. An analysis of operations showed that there were no upsets at the facility. Also, the sample upstream of Outfall 001, from Outfall 011, was below detection limit. As a precaution, CCBH submitted a Noncompliance 24-hour Notification Report to IDEM on 4 Cleveland Cliffs Burns Harbor July 12, 2021 May 21, 2021. According to the sample analysis, the monitored value was 63.27 pounds, over the 22 pounds/day permit limit. CCBH requested redistillation and reanalysis from the original sample. Four additional samples from the same sample were redistilled and reanalyzed and all were below detection limit. Ms. Swanson concluded interference from glassware. EPA and IDEM requested the Level IV report for the analysis. The Level IV report did not state that there were any lab errors that would cause the sample analysis to be incorrect. On June 2, 2021, CCBH submitted an updated Noncompliance 24-Hour Notification Report. This report states that after averaging all the results of the reanalysis, the facility was in compliance with their NPDES Permit and the mass loading issue at Outfall 001 on May 20, 2021 was not an incident of non-compliance. During the inspection, EPA suggested that CCBH contact Microbac Laboratories, Inc. for an analysis of the records of the glassware that was used in the analysis of the phenols that day. Mr. Maicher stated that he would do that. Facility Walkthrough See Attachment A for the photolog of the photos taken during the facility walkthrough. EPA and IDEM concluded the interview portion of the inspection at 11:20 A.M. and stated that they would like to observe the ammonia treatment, the centrifuges, WWPS 1 and WWPS 2, the SWTP, and Outfall 001. Ammonia Treatment EPA and IDEM arrived at the ammonia treatment at 11:26 A.M. EPA observed the control panel in the Control Room. The Control Panel does not yet reflect the new ammonia treatment. Mr. Gorman explained that cyanide is measured to 0.1 ppm and at 3 ppm they begin chlorine dioxide treatment. They measure cyanide and ammonia one time per turn (shift) unless levels are higher. Then they test the levels of cyanide and/or ammonia every two hours. Outside the Control Room, EPA and IDEM observed the new ammonia treatment. Mr. Hausman explained the process. Blast Furnace Recycle System blowdown is directed to Tank #1, where soda ash is introduced to raise the pH. The flow then goes to clarifiers for settling of solids. The sludge from the clarifiers is dewatered and then hauled to the landfill. The leachate is sent back to Tank #1. The overflow from the clarifiers goes to tank T3, where it is heated, and pH is raised a bit more. Two fixed speed pumps raise the flow to cooling towers to strip the ammonia from the water. Then the flow goes to tank T4 for breakpoint chlorination using sodium hypochlorite. Hydrogen sulfate is then added to lower the pH to 6-7. After ammonia treatment, the blowdown is directed to the Dirty Industrial Sewer (DIW) and to the SWTP. 5 Centrifuges Cleveland Cliffs Burns Harbor July 12, 2021 EPA and IDEM arrived at the centrifuges at 12:11 P.M. Mr. Nowicki explained that the RSB thickener overflow is directed to a white tank which feeds the three centrifuges. Originally, a polymer was added to the white tank to assist the centrifuges to remove the solids, but the polymer was not being distributed evenly between each centrifuge. Mr. Nowicki said they are trying to feed the polymer to each centrifuge feed line separately now. EPA observed the three centrifuges and the solids removed from one. WWPS 2 EPA and IDEM arrived at WWPS 2 at 12:30 P.M. Flow from the steel production, RSB (including the sinter plant), BFRS Blowdown, and the 110 Plate Mill goes to the WWPS 2 which pumps it to the SWTP. There is capacity for four pumps in WWPS 2 but only three are connected. Mr. Gorman explained how, on May 24, 2021 during the power failure, the discharge from the pump station overflowed from a designed overflow point and flowed to the Storm Ditch. WWPS 1 EPA and IDEM arrived at WWPS 1 at 1:03 P.M. There are two sewers from the Hot and Cold Mills of the plant. Originally, they were separated, but now they are intermixed. Four pumps on the Cold Mill side of WWPS 1 and five pumps on the Hot Mill side of WWPS 1 pump the wastewater to the SWTP. When the pumps stopped working on June 21, 2021, the water backed up in MH120 and overflowed a weir and flowed to the Storm Ditch. SWTP EPA and IDEM then walked to the SWTP and observed a sheen of oil on the surface of the water on a clarifier on the Hot Mill side of the SWTP. EPA also observed a tree growing in the thickener on the Cold Mill side of the SWTP. Mr. Maicher stated that the facility planned to look for oil sources at the facility and try to locate where the oil was getting into the wastestream. EPA and IDEM then observed the Water Cannon to the Storm Ditch. The Water Cannon is used to cool the temperature of the water in the Storm Ditch when necessary. MH120 The inspection team then drove to MH120 and arrived at 1:32 P.M. The inspection team climbed the structure to observe the weir that the wastewater overflowed on June 21, 2021 during the power failure. 6 Outfall 001 Cleveland Cliffs Burns Harbor July 12, 2021 At 1:54 P.M., the inspection team arrived at Outfall 001. EPA did not observe a sheen in the receiving waterbody. EPA observed that the temperature in the auto-sampler was 1. EPA observed the readings for the stream temperature (80.6F) and pH (8.44). EPA and IDEM provided a brief closing conference at Outfall 001 and then exited the area at 2:30 P.M. 3. DOCUMENTS RECEIVED FROM FACILITY Outfall 001 Ammonia - Mass Discharge graphs from 2020 and 2021. 4. AREAS OF CONCERN A. Influent channel is a pinch point for flow to the lagoons due to buildup of sludge in the channel. Work to dredge the influent channel cannot be started until at least Spring 2022. B. Power failures cause loss of pump function allowing untreated wastewater to discharge to the Storm Ditch. C. Oil sheen observed in the clarifier effluent in Hot Mill side of the SWTP. D. Tree growing on weir in the thickener on the Cold Mill side of the SWTP. 5. LIST OF ATTACHMENTS A) Photolog B) Outfall 001 Ammonia - Mass Discharge graphs from 2020 and 2021. C) Sediment Analysis Report 7 Attachment A Cleveland Cliffs Burns Harbor EPA Inspection July 12, 2021 All photos taken by Joan Rogers, Environmental Scientist, U.S. EPA Camera: Olympus Tough TG-4 1: P7120001 Description: Control Screen for Blast Furnace Closed Water Pump Station. Location: Control Room. Camera Direction: West Date/Time: July 12, 2021/11:32 A.M. Page 1 Cleveland Cliffs Burns Harbor July 12, 2021 2: P7120002 Description: Tank T1 (white tank on left) is where caustic and soda ash are added to the blowdown. The two blue tanks are clarifiers. Location: South of the Cooling Towers. Camera Direction: East Date/Time: July 12, 2021/11:49 A.M. 3: P7120003 Description: Sample location from Tank T1 is on top of the tank. Location: On top of Tank T1. Camera Direction: Southwest and Down Date/Time: July 12, 2021/11:51 A.M. Page 2 Cleveland Cliffs Burns Harbor July 12, 2021 4: P7120004 Description: The influent to the clarifier is on the left of the blue tank. Location: On top of Tank T1. Camera Direction: Southeast Date/Time: July 12, 2021/11:52 A.M. 5: P7120005 Description: The effluent from the clarifier is on the right of the blue tank. Location: On top of Tank T1. Camera Direction: Southwest Date/Time: July 12, 2021/11:53 A.M. Page 3 Cleveland Cliffs Burns Harbor July 12, 2021 6: P7120006 Description: The sludge from the clarifiers is collected and allowed to drain. The leachate is collected in a sump and fed back to Tank T1. Location: South of the Cooling Towers Camera Direction: North Date/Time: July 12, 2021/11:59 A.M. 7: P7120007 Description: The blowdown water after treatment. Location: South of the Cooling Towers. Camera Direction: Down Date/Time: July 12, 2021/12:03 P.M. Page 4 Cleveland Cliffs Burns Harbor July 12, 2021 8: P7120008 Description: Sludge from the #318 Centrifuge is collected and dewatered. Location: West of the RSB Thickener. Camera Direction: North Date/Time: July 12, 2021/12:14 P.M. 9: P7120009 Description: The three centrifuges for removing solids from the RSB Thickener Overflow. #318 is nearest the camera, #310 is in the middle, #325 is furthest from the camera. Location: West of the RSB Thickener. Camera Direction: Northeast Date/Time: July 12, 2021/12:23 P.M. Page 5 Cleveland Cliffs Burns Harbor July 12, 2021 10: P7120010 Description: The Cold Mill Pumps in Waste Water Pump Station 1. Location: Inside Waste Water Pump Station 1. Camera Direction: East Date/Time: July 12, 2021/1:06 P.M. 11: P7120011 Description: The Hot Mill Pumps in Waste Water Pump Station 1. Location: Inside Waste Water Pump Station 1. Camera Direction: West Date/Time: July 12, 2021/1:07 P.M. Page 6 Cleveland Cliffs Burns Harbor July 12, 2021 12: P7120012 Description: Sheen observed at a clarifier on the Hot Mill side of the SWTP. Location: Hot Mill side of the SWTP. Camera Direction: South Date/Time: July 12, 2021/1:09 P.M. 13: P7120013 Description: Plant growing in the thickener on the Cold Mill side of the SWTP. Location: Cold Mill side of the SWTP. Camera Direction: South Date/Time: July 12, 2021/1:16 P.M. Page 7 Cleveland Cliffs Burns Harbor July 12, 2021 14: P7120014 Description: Water Cannon to the Storm Ditch. Location: North of the SWTP. Camera Direction: Northwest Date/Time: July 12, 2021/1:19 P.M. 15: P7120015 Description: Manhole 120 overflow location that can overflow to the Storm Ditch. Location: Manhole 120. Camera Direction: Down Date/Time: July 12, 2021/1:32 P.M. Page 8 Cleveland Cliffs Burns Harbor July 12, 2021 16: P7120016 Description: Looking upstream at Outfall 001. Location: Outfall 001. Camera Direction: West/Northwest Date/Time: July 12, 2021/1:57 P.M. Page 9 Cleveland Cliffs Burns Harbor July 12, 2021 Attachment C 1 2 3 4 ANALYTICAL REPORT 5 6 Eurofins TestAmerica, Chicago 2417 Bond Street 7 University Park, IL 60484 Tel: (708)534-5200 8 Laboratory Job ID: 500-196180-1 9 Client Project/Site: Inlet Channel Sediment For: 10 ArcelorMittal USA Inc. 11 250 West US Highway 12 Burns Harbor, Indiana 46304 12 Attn: John Olashuk 13 14 15 Authorized for release by: 3/30/2021 3:21:45 PM Diana Mockler, Project Manager I (219)252-7570 Diana.Mockler@Eurofinset.com The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. Client: ArcelorMittal USA Inc. Laboratory Job ID: 500-196180-1 1 Table of Contents 2 Project/Site: Inlet Channel Sediment Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 10 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 11 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 12 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 13 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 14 15 Page 2 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Case Narrative 1 Job ID: 500-196180-1 2 Job ID: 500-196180-1 3 Laboratory: Eurofins TestAmerica, Chicago 4 5 Narrative Job Narrative 6 500-196180-1 Comments No additional comments. 7 8 Receipt The sample was received on 3/16/2021 1:38 PM. Unless otherwise noted below, the sample arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.3 C. 9 GC/MS VOA Method 8260B: The following sample was diluted due to the abundance of non-target analytes: Inlet Channel Sediment (500-196180-1). 10 Elevated reporting limits (RLs) are provided. 11 No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. 12 GC/MS Semi VOA 13 No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Metals Method 6010B: The method blank for preparation batch 500-589142 and analytical batch 500-589573 contained Iron above the reporting 14 limit (RL). Associated sample(s) were not re-extracted and/or re-analyzed because results were greater than 10X the value found in the method blank. 15 No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. General Chemistry No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Organic Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Page 3 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Detection Summary Client Sample ID: Inlet Channel Sediment Analyte Acetone Carbon disulfide Aluminum Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Lead Magnesium Manganese Nickel Potassium Selenium Silver Sodium Vanadium Zinc Mercury Cyanide, Total pH HEM (Oil & Grease) Result Qualifier 110 11 J 3600 B 12 17 45 3.4 16 B 56000 200 6.0 240 320000 660 4100 B 3900 B 130 620 B 7.4 5.8 410 78 2900 0.29 0.68 7.5 49000 RL 110 27 52 5.2 2.6 2.6 1.0 0.52 52 2.6 1.3 2.6 260 6.5 26 2.6 13 130 2.6 1.3 260 6.5 5.2 0.044 0.67 0.2 1200 MDL Unit 46 ug/Kg 5.5 ug/Kg 21 mg/Kg 1.0 mg/Kg 0.89 mg/Kg 0.30 mg/Kg 0.24 mg/Kg 0.093 mg/Kg 8.8 mg/Kg 1.3 mg/Kg 0.34 mg/Kg 0.72 mg/Kg 130 mg/Kg 3.0 mg/Kg 13 mg/Kg 0.38 mg/Kg 3.8 mg/Kg 46 mg/Kg 1.5 mg/Kg 0.33 mg/Kg 38 mg/Kg 1.5 mg/Kg 2.3 mg/Kg 0.015 mg/Kg 0.34 mg/Kg 0.2 SU 600 mg/Kg Job ID: 500-196180-1 Lab Sample ID: 500-196180-1 Dil Fac D Method 2 8260B 2 8260B 1 6010B 1 6010B 1 6010B 1 6010B 1 6010B 1 6010B 1 6010B 1 6010B 1 6010B 1 6010B 5 6010B 5 6010B 1 6010B 1 6010B 5 6010B 1 6010B 1 6010B 1 6010B 1 6010B 5 6010B 1 6010B 1 7471B 1 9012B 1 9045D 1 9071B Prep Type Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA Total/NA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 This Detection Summary does not include radiochemical test results. Page 4 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Method Summary Job ID: 500-196180-1 Method 8260B 8270D 6010B 6010C 7470A 7471B 9012B 9045D 9071B Moisture 1311 3010A 3050B 3510C 3541 5030B 7470A 7471B 9010C 9071B Method Description Volatile Organic Compounds (GC/MS) Semivolatile Organic Compounds (GC/MS) Metals (ICP) Metals (ICP) Mercury (CVAA) Mercury (CVAA) Cyanide, Total andor Amenable pH HEM and SGT-HEM Percent Moisture TCLP Extraction Preparation, Total Metals Preparation, Metals Liquid-Liquid Extraction (Separatory Funnel) Automated Soxhlet Extraction Purge and Trap Preparation, Mercury Preparation, Mercury Cyanide, Distillation Preparation, HEM and SGT-HEM Protocol SW846 SW846 SW846 SW846 SW846 SW846 SW846 SW846 SW846 EPA SW846 SW846 SW846 SW846 SW846 SW846 SW846 SW846 SW846 SW846 Laboratory TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI Protocol References: EPA = US Environmental Protection Agency SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL CHI = Eurofins TestAmerica, Chicago, 2417 Bond Street, University Park, IL 60484, TEL (708)534-5200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 5 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Lab Sample ID 500-196180-1 Client Sample ID Inlet Channel Sediment Sample Summary 1 Job ID: 500-196180-1 2 3 Matrix Collected Received Asset ID Solid 03/11/21 08:40 03/16/21 13:38 4 5 6 7 8 9 10 11 12 13 14 15 Page 6 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Client Sample Results Client Sample ID: Inlet Channel Sediment Date Collected: 03/11/21 08:40 Date Received: 03/16/21 13:38 Method: 8260B - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL Acetone 110 110 Benzene <11 11 Bromodichloromethane <11 11 Bromoform <11 11 Bromomethane <27 27 Carbon disulfide 11 J 27 Carbon tetrachloride <11 11 Chlorobenzene <11 11 Chloroethane <27 27 Chloroform <11 11 Chloromethane <27 27 cis-1,2-Dichloroethene <11 11 cis-1,3-Dichloropropene <11 11 Cyclohexane <11 11 Dibromochloromethane <11 11 1,2-Dibromo-3-Chloropropane <27 27 1,2-Dibromoethane <11 11 1,3-Dichlorobenzene <11 11 1,4-Dichlorobenzene <11 11 1,2-Dichlorobenzene <11 11 Dichlorodifluoromethane <27 27 1,1-Dichloroethane <11 11 1,2-Dichloroethane <27 27 1,1-Dichloroethene <11 11 1,2-Dichloropropane <11 11 Ethylbenzene <11 11 2-Hexanone <27 27 Isopropylbenzene <11 11 Methyl acetate <130 130 Methylcyclohexane <11 11 Methylene Chloride <27 27 Methyl Ethyl Ketone <27 27 methyl isobutyl ketone <27 27 Methyl tert-butyl ether <11 11 Styrene <11 11 1,1,2,2-Tetrachloroethane <11 11 Tetrachloroethene <11 11 Toluene <11 11 trans-1,2-Dichloroethene <11 11 trans-1,3-Dichloropropene <11 11 1,2,4-Trichlorobenzene <11 11 1,1,1-Trichloroethane <11 11 1,1,2-Trichloroethane <11 11 Trichloroethene <11 11 Trichlorofluoromethane <27 27 1,1,2-Trichloro-1,2,2-trifluoroethane <11 11 Vinyl chloride <11 11 Xylenes, Total <21 21 MDL Unit 46 ug/Kg 2.7 ug/Kg 2.2 ug/Kg 3.1 ug/Kg 10 ug/Kg 5.5 ug/Kg 3.1 ug/Kg 3.9 ug/Kg 7.9 ug/Kg 3.7 ug/Kg 11 ug/Kg 3.0 ug/Kg 3.2 ug/Kg 4.1 ug/Kg 3.5 ug/Kg 11 ug/Kg 4.1 ug/Kg 3.9 ug/Kg 4.1 ug/Kg 4.0 ug/Kg 6.3 ug/Kg 3.6 ug/Kg 8.3 ug/Kg 3.7 ug/Kg 2.8 ug/Kg 5.1 ug/Kg 8.3 ug/Kg 3.8 ug/Kg 35 ug/Kg 3.7 ug/Kg 10 ug/Kg 12 ug/Kg 7.9 ug/Kg 3.1 ug/Kg 3.2 ug/Kg 3.4 ug/Kg 3.6 ug/Kg 2.7 ug/Kg 4.7 ug/Kg 3.7 ug/Kg 3.8 ug/Kg 3.6 ug/Kg 4.6 ug/Kg 3.6 ug/Kg 11 ug/Kg 4.8 ug/Kg 4.7 ug/Kg 3.4 ug/Kg 1 Job ID: 500-196180-1 2 Lab Sample ID: 500-196180-1 3 Matrix: Solid Percent Solids: 37.5 4 D Prepared Analyzed Dil Fac 5 03/25/21 11:31 2 03/25/21 11:31 26 03/25/21 11:31 2 03/25/21 11:31 27 03/25/21 11:31 2 8 03/25/21 11:31 2 03/25/21 11:31 2 9 03/25/21 11:31 2 03/25/21 11:31 2 10 03/25/21 11:31 2 03/25/21 11:31 2 11 03/25/21 11:31 2 03/25/21 11:31 2 12 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 13 03/25/21 11:31 2 03/25/21 11:31 2 14 03/25/21 11:31 2 03/25/21 11:31 2 15 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 03/25/21 11:31 2 Page 7 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Client Sample Results Client Sample ID: Inlet Channel Sediment Date Collected: 03/11/21 08:40 Date Received: 03/16/21 13:38 Surrogate 1,2-Dichloroethane-d4 (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane %Recovery Qualifier 102 99 106 96 Limits 70 - 134 75 - 124 75 - 131 75 - 126 Method: 8260B - Volatile Organic Compounds (GC/MS) - TCLP Analyte Result Qualifier RL Benzene <0.020 0.020 Carbon tetrachloride <0.020 0.020 Chlorobenzene <0.020 0.020 Chloroform <0.040 0.040 1,2-Dichloroethane <0.020 0.020 1,1-Dichloroethene <0.020 0.020 Methyl Ethyl Ketone <0.10 0.10 Tetrachloroethene <0.020 0.020 Trichloroethene <0.020 0.020 Vinyl chloride <0.020 0.020 Surrogate 1,2-Dichloroethane-d4 (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane %Recovery Qualifier 101 99 98 94 Limits 75 - 126 75 - 120 72 - 124 75 - 120 Method: 8270D - Semivolatile Organic Compounds (GC/MS) Analyte Result Qualifier RL Acenaphthene <1300 1300 Acenaphthylene <1300 1300 Acetophenone <13000 13000 Anthracene <1300 1300 Atrazine <13000 13000 Benzaldehyde <53000 53000 Benzo[a]anthracene <1300 1300 Benzo[a]pyrene <1300 1300 Benzo[b]fluoranthene <1300 1300 Benzo[g,h,i]perylene <1300 1300 Benzo[k]fluoranthene <1300 1300 1,1'-Biphenyl <6500 6500 Bis(2-chloroethoxy)methane <6500 6500 Bis(2-chloroethyl)ether <6500 6500 Bis(2-ethylhexyl) phthalate <6500 6500 4-Bromophenyl phenyl ether <6500 6500 Butyl benzyl phthalate <6500 6500 Caprolactam <13000 13000 Carbazole <6500 6500 4-Chloroaniline <26000 26000 4-Chloro-3-methylphenol <13000 13000 2-Chloronaphthalene <6500 6500 2-Chlorophenol <6500 6500 4-Chlorophenyl phenyl ether <6500 6500 Chrysene <1300 1300 MDL Unit 0.010 mg/L 0.010 mg/L 0.010 mg/L 0.020 mg/L 0.010 mg/L 0.010 mg/L 0.050 mg/L 0.010 mg/L 0.010 mg/L 0.010 mg/L MDL Unit 230 ug/Kg 170 ug/Kg 3200 ug/Kg 220 ug/Kg 3800 ug/Kg 13000 ug/Kg 180 ug/Kg 250 ug/Kg 280 ug/Kg 420 ug/Kg 380 ug/Kg 1600 ug/Kg 1300 ug/Kg 2000 ug/Kg 2400 ug/Kg 1700 ug/Kg 2500 ug/Kg 3900 ug/Kg 3300 ug/Kg 6100 ug/Kg 4400 ug/Kg 1400 ug/Kg 2200 ug/Kg 1500 ug/Kg 350 ug/Kg Page 8 of 35 1 Job ID: 500-196180-1 2 Lab Sample ID: 500-196180-1 3 Matrix: Solid Percent Solids: 37.5 4 5 Prepared Analyzed Dil Fac 03/25/21 11:31 2 03/25/21 11:31 03/25/21 11:31 22 6 03/25/21 11:31 27 D Prepared Analyzed Dil Fac 8 03/25/21 12:29 20 03/25/21 12:29 03/25/21 12:29 20 9 20 03/25/21 12:29 03/25/21 12:29 20 10 20 03/25/21 12:29 03/25/21 12:29 20 11 20 03/25/21 12:29 03/25/21 12:29 20 12 20 Prepared 03/25/21 12:29 Analyzed 03/25/21 12:29 03/25/21 12:29 03/25/21 12:29 03/25/21 12:29 20 Dil Fac 20 20 20 20 13 14 15 D Prepared Analyzed 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 Dil Fac 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Client Sample Results Client Sample ID: Inlet Channel Sediment Date Collected: 03/11/21 08:40 Date Received: 03/16/21 13:38 Method: 8270D - Semivolatile Organic Compounds (GC/MS) (Continued) Analyte Result Qualifier RL MDL Unit Dibenz(a,h)anthracene <1300 1300 250 ug/Kg Dibenzofuran <6500 6500 1500 ug/Kg 3,3'-Dichlorobenzidine <6500 6500 1800 ug/Kg 2,4-Dichlorophenol <13000 13000 3100 ug/Kg Diethyl phthalate <6500 6500 2200 ug/Kg 2,4-Dimethylphenol <13000 13000 4900 ug/Kg Dimethyl phthalate <6500 6500 1700 ug/Kg Di-n-butyl phthalate <6500 6500 2000 ug/Kg 4,6-Dinitro-2-methylphenol <26000 26000 10000 ug/Kg 2,4-Dinitrophenol <26000 26000 23000 ug/Kg 2,6-Dinitrotoluene <6500 6500 2600 ug/Kg 2,4-Dinitrotoluene <6500 6500 2100 ug/Kg Di-n-octyl phthalate <6500 6500 2100 ug/Kg Fluoranthene <1300 1300 240 ug/Kg Fluorene <1300 1300 180 ug/Kg Hexachlorobenzene <2600 2600 300 ug/Kg Hexachlorobutadiene <6500 6500 2000 ug/Kg Hexachlorocyclopentadiene <26000 26000 7500 ug/Kg Hexachloroethane <6500 6500 2000 ug/Kg Indeno[1,2,3-cd]pyrene <1300 1300 340 ug/Kg Isophorone <6500 6500 1500 ug/Kg 2-Methylnaphthalene <2600 2600 240 ug/Kg 2-Methylphenol <6500 6500 2100 ug/Kg 3 & 4 Methylphenol <6500 6500 2200 ug/Kg Naphthalene <1300 1300 200 ug/Kg 2-Nitroaniline <6500 6500 1800 ug/Kg 3-Nitroaniline <13000 13000 4000 ug/Kg 4-Nitroaniline <13000 13000 5400 ug/Kg Nitrobenzene <1300 1300 320 ug/Kg 2-Nitrophenol <13000 13000 3100 ug/Kg 4-Nitrophenol <26000 26000 12000 ug/Kg N-Nitrosodi-n-propylamine <2600 2600 1600 ug/Kg N-Nitrosodiphenylamine <6500 6500 1500 ug/Kg 2,2'-oxybis[1-chloropropane] <6500 6500 1500 ug/Kg Pentachlorophenol <26000 26000 21000 ug/Kg Phenanthrene <1300 1300 180 ug/Kg Phenol <6500 6500 2900 ug/Kg Pyrene <1300 1300 260 ug/Kg 2,4,6-Trichlorophenol <13000 13000 4500 ug/Kg 2,4,5-Trichlorophenol <13000 13000 3000 ug/Kg Surrogate 2-Fluorophenol (Surr) Phenol-d5 (Surr) Nitrobenzene-d5 (Surr) 2-Fluorobiphenyl (Surr) 2,4,6-Tribromophenol (Surr) Terphenyl-d14 (Surr) %Recovery Qualifier 86 71 60 72 98 83 Limits 31 - 166 30 - 153 37 - 147 43 - 145 31 - 143 42 - 157 1 Job ID: 500-196180-1 2 Lab Sample ID: 500-196180-1 3 Matrix: Solid Percent Solids: 37.5 4 D Prepared Analyzed 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 03/24/21 08:05 03/25/21 23:50 Dil Fac 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 5 6 7 8 9 10 11 12 13 14 15 Prepared 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 Analyzed 03/25/21 23:50 03/25/21 23:50 03/25/21 23:50 03/25/21 23:50 03/25/21 23:50 03/25/21 23:50 Dil Fac 1 1 1 1 1 1 Page 9 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Client Sample Results Client Sample ID: Inlet Channel Sediment Date Collected: 03/11/21 08:40 Date Received: 03/16/21 13:38 Method: 8270D - Semivolatile Organic Compounds (GC/MS) - TCLP Analyte Result Qualifier RL MDL Unit 2-Methylphenol <0.020 0.020 0.020 mg/L 3 & 4 Methylphenol <0.020 0.020 0.020 mg/L 1,4-Dichlorobenzene <0.020 0.020 0.020 mg/L 2,4-Dinitrotoluene <0.010 0.010 0.010 mg/L Hexachlorobenzene <0.0050 0.0050 0.0050 mg/L Hexachlorobutadiene <0.050 0.050 0.050 mg/L Hexachloroethane <0.050 0.050 0.050 mg/L Nitrobenzene <0.010 0.010 0.010 mg/L Pentachlorophenol <0.20 0.20 0.20 mg/L Pyridine <0.20 0.20 0.20 mg/L 2,4,5-Trichlorophenol <0.10 0.10 0.10 mg/L 2,4,6-Trichlorophenol <0.050 0.050 0.050 mg/L Surrogate 2-Fluorophenol (Surr) Phenol-d5 (Surr) Nitrobenzene-d5 (Surr) 2-Fluorobiphenyl 2,4,6-Tribromophenol (Surr) Terphenyl-d14 (Surr) %Recovery Qualifier 63 33 84 93 91 118 Limits 27 - 110 20 - 100 36 - 120 34 - 110 40 - 145 40 - 145 Method: 6010B - Metals (ICP) Analyte Aluminum Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Lead Magnesium Manganese Nickel Potassium Selenium Silver Sodium Thallium Vanadium Zinc Result Qualifier 3600 B 12 17 45 3.4 16 B 56000 200 6.0 240 320000 660 4100 B 3900 B 130 620 B 7.4 5.8 410 <13 78 2900 RL MDL Unit 52 21 mg/Kg 5.2 1.0 mg/Kg 2.6 0.89 mg/Kg 2.6 0.30 mg/Kg 1.0 0.24 mg/Kg 0.52 0.093 mg/Kg 52 8.8 mg/Kg 2.6 1.3 mg/Kg 1.3 0.34 mg/Kg 2.6 0.72 mg/Kg 260 130 mg/Kg 6.5 3.0 mg/Kg 26 13 mg/Kg 2.6 0.38 mg/Kg 13 3.8 mg/Kg 130 46 mg/Kg 2.6 1.5 mg/Kg 1.3 0.33 mg/Kg 260 38 mg/Kg 13 6.5 mg/Kg 6.5 1.5 mg/Kg 5.2 2.3 mg/Kg Method: 6010C - Metals (ICP) - TCLP Analyte Result Qualifier Arsenic <0.50 Barium <5.0 RL MDL Unit 0.50 0.10 mg/L 5.0 0.50 mg/L Page 10 of 35 1 Job ID: 500-196180-1 2 Lab Sample ID: 500-196180-1 3 Matrix: Solid Percent Solids: 37.5 4 D Prepared Analyzed 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 03/25/21 18:42 03/26/21 15:55 Prepared 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 Analyzed 03/26/21 15:55 03/26/21 15:55 03/26/21 15:55 03/26/21 15:55 03/26/21 15:55 03/26/21 15:55 D Prepared Analyzed 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/19/21 21:42 03/18/21 06:56 03/19/21 21:42 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/19/21 21:42 03/18/21 06:56 03/19/21 21:45 03/18/21 06:56 03/19/21 21:45 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/19/21 21:45 03/18/21 06:56 03/19/21 21:42 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/18/21 20:48 03/18/21 06:56 03/19/21 21:45 03/18/21 06:56 03/19/21 21:45 03/18/21 06:56 03/18/21 20:48 Dil Fac 1 1 1 1 1 1 1 1 1 1 1 1 Dil Fac 1 1 1 1 1 1 Dil Fac 1 1 1 1 1 1 1 1 1 1 5 5 1 1 5 1 1 1 1 5 5 1 5 6 7 8 9 10 11 12 13 14 15 D Prepared Analyzed 03/25/21 16:52 03/26/21 11:56 03/25/21 16:52 03/26/21 11:56 Dil Fac 10 10 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Client Sample Results Client Sample ID: Inlet Channel Sediment Date Collected: 03/11/21 08:40 Date Received: 03/16/21 13:38 Method: 6010C - Metals (ICP) - TCLP (Continued) Analyte Result Qualifier Cadmium <0.050 Chromium <0.25 Lead <0.50 Selenium <0.50 Silver <0.25 RL 0.050 0.25 0.50 0.50 0.25 MDL Unit 0.020 mg/L 0.10 mg/L 0.075 mg/L 0.20 mg/L 0.10 mg/L Method: 7470A - Mercury (CVAA) - TCLP Analyte Result Qualifier Mercury <0.00020 RL 0.00020 MDL Unit 0.00020 mg/L Method: 7471B - Mercury (CVAA) Analyte Mercury Result Qualifier 0.29 RL 0.044 MDL Unit 0.015 mg/Kg General Chemistry Analyte Cyanide, Total pH HEM (Oil & Grease) Result Qualifier 0.68 7.5 49000 RL 0.67 0.2 1200 MDL Unit 0.34 mg/Kg 0.2 SU 600 mg/Kg 1 Job ID: 500-196180-1 2 Lab Sample ID: 500-196180-1 3 Matrix: Solid Percent Solids: 37.5 4 D Prepared Analyzed Dil Fac 5 03/25/21 16:52 03/25/21 16:52 03/25/21 16:52 03/26/21 11:56 03/26/21 11:56 03/26/21 11:56 10 10 6 10 03/25/21 16:52 03/26/21 11:56 03/25/21 16:52 03/26/21 11:56 10 7 10 8 9 D Prepared Analyzed Dil Fac 03/29/21 09:50 03/30/21 09:55 1 D Prepared Analyzed 03/25/21 10:32 03/26/21 10:12 Dil Fac 1 10 11 D Prepared Analyzed 03/19/21 13:05 03/19/21 17:16 03/17/21 16:31 03/24/21 10:56 03/25/21 10:31 Dil Fac 1 1 1 12 13 14 15 Page 11 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Definitions/Glossary Qualifiers GC/MS VOA Qualifier J Qualifier Description Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. GC/MS Semi VOA Qualifier Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Metals Qualifier B J Qualifier Description Compound was found in the blank and sample. Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary Abbreviation %R CFL CFU CNF DER Dil Fac DL DL, RA, RE, IN DLC EDL LOD LOQ MCL MDA MDC MDL ML MPN MQL NC ND NEG POS PQL PRES QC RER RL RPD TEF TEQ TNTC These commonly used abbreviations may or may not be present in this report. Listed under the "D" column to designate that the result is reported on a dry weight basis Percent Recovery Contains Free Liquid Colony Forming Unit Contains No Free Liquid Duplicate Error Ratio (normalized absolute difference) Dilution Factor Detection Limit (DoD/DOE) Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample Decision Level Concentration (Radiochemistry) Estimated Detection Limit (Dioxin) Limit of Detection (DoD/DOE) Limit of Quantitation (DoD/DOE) EPA recommended "Maximum Contaminant Level" Minimum Detectable Activity (Radiochemistry) Minimum Detectable Concentration (Radiochemistry) Method Detection Limit Minimum Level (Dioxin) Most Probable Number Method Quantitation Limit Not Calculated Not Detected at the reporting limit (or MDL or EDL if shown) Negative / Absent Positive / Present Practical Quantitation Limit Presumptive Quality Control Relative Error Ratio (Radiochemistry) Reporting Limit or Requested Limit (Radiochemistry) Relative Percent Difference, a measure of the relative difference between two points Toxicity Equivalent Factor (Dioxin) Toxicity Equivalent Quotient (Dioxin) Too Numerous To Count Job ID: 500-196180-1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 12 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Association Summary GC/MS VOA Leach Batch: 590172 Lab Sample ID 500-196180-1 LB 500-590172/1-A Client Sample ID Inlet Channel Sediment Method Blank Prep Type TCLP TCLP Matrix Solid Solid Analysis Batch: 590270 Lab Sample ID 500-196180-1 MB 500-590270/7 LCS 500-590270/4 LCSD 500-590270/5 Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Lab Control Sample Dup Prep Type Total/NA Total/NA Total/NA Total/NA Matrix Solid Solid Solid Solid Analysis Batch: 590282 Lab Sample ID 500-196180-1 LB 500-590172/1-A MB 500-590282/7 LCS 500-590282/5 Client Sample ID Inlet Channel Sediment Method Blank Method Blank Lab Control Sample Prep Type TCLP TCLP Total/NA Total/NA Matrix Solid Solid Solid Solid GC/MS Semi VOA Prep Batch: 590082 Lab Sample ID 500-196180-1 MB 500-590082/1-A LCS 500-590082/2-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid Leach Batch: 590170 Lab Sample ID 500-196180-1 LB2 500-590170/1-C Client Sample ID Inlet Channel Sediment Method Blank Prep Type TCLP TCLP Matrix Solid Solid Analysis Batch: 590442 Lab Sample ID 500-196180-1 MB 500-590082/1-A LCS 500-590082/2-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid Prep Batch: 590448 Lab Sample ID 500-196180-1 LB2 500-590170/1-C MB 500-590448/1-A LCS 500-590448/2-A Client Sample ID Inlet Channel Sediment Method Blank Method Blank Lab Control Sample Prep Type TCLP TCLP Total/NA Total/NA Matrix Solid Solid Solid Solid Analysis Batch: 590523 Lab Sample ID 500-196180-1 LB2 500-590170/1-C MB 500-590448/1-A LCS 500-590448/2-A Client Sample ID Inlet Channel Sediment Method Blank Method Blank Lab Control Sample Prep Type TCLP TCLP Total/NA Total/NA Matrix Solid Solid Solid Solid 1 Job ID: 500-196180-1 2 3 Method 1311 1311 4 Prep Batch 5 Method 8260B 8260B 8260B 8260B 6 7 Prep Batch 8 9 Method 8260B 8260B 8260B 8260B 10 Prep Batch 590172 590172 11 12 13 Method 3541 3541 3541 Prep Batch 14 15 Method 1311 1311 Prep Batch Method 8270D 8270D 8270D Prep Batch 590082 590082 590082 Method 3510C 3510C 3510C 3510C Prep Batch 590170 590170 Method 8270D 8270D 8270D 8270D Prep Batch 590448 590448 590448 590448 Page 13 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Association Summary Metals Prep Batch: 589142 Lab Sample ID 500-196180-1 MB 500-589142/1-A LCS 500-589142/2-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid Analysis Batch: 589384 Lab Sample ID 500-196180-1 MB 500-589142/1-A LCS 500-589142/2-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid Analysis Batch: 589573 Lab Sample ID 500-196180-1 500-196180-1 MB 500-589142/1-A LCS 500-589142/2-A Client Sample ID Inlet Channel Sediment Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Total/NA Matrix Solid Solid Solid Solid Leach Batch: 590170 Lab Sample ID 500-196180-1 LB2 500-590170/1-B LB2 500-590170/2-B Client Sample ID Inlet Channel Sediment Method Blank Method Blank Prep Type TCLP TCLP TCLP Matrix Solid Solid Solid Prep Batch: 590363 Lab Sample ID 500-196180-1 MB 500-590363/12-A LCS 500-590363/13-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid Prep Batch: 590423 Lab Sample ID 500-196180-1 LB2 500-590170/1-B LCS 500-590423/18-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type TCLP TCLP Total/NA Matrix Solid Solid Solid Analysis Batch: 590577 Lab Sample ID 500-196180-1 LB2 500-590170/1-B LCS 500-590423/18-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type TCLP TCLP Total/NA Matrix Solid Solid Solid Analysis Batch: 590583 Lab Sample ID 500-196180-1 MB 500-590363/12-A LCS 500-590363/13-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid Prep Batch: 590763 Lab Sample ID 500-196180-1 LB2 500-590170/2-B Client Sample ID Inlet Channel Sediment Method Blank Prep Type TCLP TCLP Matrix Solid Solid Page 14 of 35 1 Job ID: 500-196180-1 2 3 Method 3050B 3050B 3050B 4 Prep Batch 5 6 Method 6010B 6010B 6010B Prep Batch 7 589142 589142 8 589142 9 Method 6010B 6010B 6010B 6010B 10 Prep Batch 589142 11 589142 589142 589142 12 Method 1311 1311 1311 13 Prep Batch 14 15 Method 7471B 7471B 7471B Prep Batch Method 3010A 3010A 3010A Prep Batch 590170 590170 Method 6010C 6010C 6010C Prep Batch 590423 590423 590423 Method 7471B 7471B 7471B Prep Batch 590363 590363 590363 Method 7470A 7470A Prep Batch 590170 590170 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Association Summary Metals (Continued) Prep Batch: 590763 (Continued) Lab Sample ID MB 500-590763/12-A LCS 500-590763/36-A Client Sample ID Method Blank Lab Control Sample Prep Type Total/NA Total/NA Matrix Solid Solid Analysis Batch: 590992 Lab Sample ID 500-196180-1 LB2 500-590170/2-B MB 500-590763/12-A LCS 500-590763/36-A Client Sample ID Inlet Channel Sediment Method Blank Method Blank Lab Control Sample Prep Type TCLP TCLP Total/NA Total/NA Matrix Solid Solid Solid Solid General Chemistry Analysis Batch: 588986 Lab Sample ID 500-196180-1 Client Sample ID Inlet Channel Sediment Prep Type Total/NA Matrix Solid Analysis Batch: 589054 Lab Sample ID 500-196180-1 LCS 500-589054/5 LCSD 500-589054/6 500-196180-1 DU Client Sample ID Inlet Channel Sediment Lab Control Sample Lab Control Sample Dup Inlet Channel Sediment Prep Type Total/NA Total/NA Total/NA Total/NA Matrix Solid Solid Solid Solid Prep Batch: 589489 Lab Sample ID 500-196180-1 MB 500-589489/1-A HLCS 500-589489/2-A LCS 500-589489/3-A LLCS 500-589489/4-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Lab Control Sample Lab Control Sample Prep Type Total/NA Total/NA Total/NA Total/NA Total/NA Matrix Solid Solid Solid Solid Solid Analysis Batch: 589529 Lab Sample ID 500-196180-1 MB 500-589489/1-A HLCS 500-589489/2-A LCS 500-589489/3-A LLCS 500-589489/4-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Lab Control Sample Lab Control Sample Prep Type Total/NA Total/NA Total/NA Total/NA Total/NA Matrix Solid Solid Solid Solid Solid Prep Batch: 590142 Lab Sample ID 500-196180-1 MB 500-590142/1-A LCS 500-590142/2-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid Analysis Batch: 590361 Lab Sample ID 500-196180-1 MB 500-590142/1-A LCS 500-590142/2-A Client Sample ID Inlet Channel Sediment Method Blank Lab Control Sample Prep Type Total/NA Total/NA Total/NA Matrix Solid Solid Solid 1 Job ID: 500-196180-1 2 3 Method 7470A 7470A 4 Prep Batch 5 Method 7470A 7470A 7470A 7470A 6 7 Prep Batch 590763 590763 590763 8 590763 9 Method Moisture 10 Prep Batch 11 Method 9045D 9045D 9045D 9045D 12 13 Prep Batch 14 15 Method 9010C 9010C 9010C 9010C 9010C Prep Batch Method 9012B 9012B 9012B 9012B 9012B Prep Batch 589489 589489 589489 589489 589489 Method 9071B 9071B 9071B Prep Batch Method 9071B 9071B 9071B Prep Batch 590142 590142 590142 Page 15 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Surrogate Summary 1 Job ID: 500-196180-1 2 Method: 8260B - Volatile Organic Compounds (GC/MS) Matrix: Solid Prep Type: Total/NA 3 Percent Surrogate Recovery (Acceptance Limits) 4 DCA TOL BFB DBFM Lab Sample ID Client Sample ID (70-134) (75-124) (75-131) (75-126) 5 500-196180-1 Inlet Channel Sediment 102 99 106 96 LCS 500-590270/4 Lab Control Sample 100 94 92 98 6 LCSD 500-590270/5 Lab Control Sample Dup 104 96 92 98 MB 500-590270/7 Method Blank 106 92 90 101 7 8 Surrogate Legend DCA = 1,2-Dichloroethane-d4 (Surr) TOL = Toluene-d8 (Surr) BFB = 4-Bromofluorobenzene (Surr) 9 DBFM = Dibromofluoromethane Method: 8260B - Volatile Organic Compounds (GC/MS) 10 Matrix: Solid Prep Type: Total/NA 11 DCA Percent Surrogate Recovery (Acceptance Limits) TOL BFB DBFM 12 Lab Sample ID LCS 500-590282/5 MB 500-590282/7 Surrogate Legend Client Sample ID Lab Control Sample Method Blank (75-126) 97 101 (75-120) 97 96 (72-124) 93 95 (75-120) 97 95 13 14 DCA = 1,2-Dichloroethane-d4 (Surr) TOL = Toluene-d8 (Surr) 15 BFB = 4-Bromofluorobenzene (Surr) DBFM = Dibromofluoromethane Method: 8260B - Volatile Organic Compounds (GC/MS) Matrix: Solid Prep Type: TCLP Lab Sample ID 500-196180-1 LB 500-590172/1-A Client Sample ID Inlet Channel Sediment Method Blank DCA (75-126) 101 99 Percent Surrogate Recovery (Acceptance Limits) TOL BFB DBFM (75-120) (72-124) (75-120) 99 98 94 99 95 93 Surrogate Legend DCA = 1,2-Dichloroethane-d4 (Surr) TOL = Toluene-d8 (Surr) BFB = 4-Bromofluorobenzene (Surr) DBFM = Dibromofluoromethane Method: 8270D - Semivolatile Organic Compounds (GC/MS) Matrix: Solid Prep Type: Total/NA Lab Sample ID 500-196180-1 LCS 500-590082/2-A MB 500-590082/1-A Client Sample ID Inlet Channel Sediment Lab Control Sample Method Blank 2FP (31-166) 86 111 102 Percent Surrogate Recovery (Acceptance Limits) PHL NBZ FBP TBP TPHL (30-153) (37-147) (43-145) (31-143) (42-157) 71 60 72 98 83 92 84 94 92 79 87 67 78 49 82 Surrogate Legend 2FP = 2-Fluorophenol (Surr) Eurofins TestAmerica, Chicago Page 16 of 35 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment PHL = Phenol-d5 (Surr) NBZ = Nitrobenzene-d5 (Surr) FBP = 2-Fluorobiphenyl (Surr) Surrogate Summary 1 Job ID: 500-196180-1 2 3 4 TBP = 2,4,6-Tribromophenol (Surr) TPHL = Terphenyl-d14 (Surr) Method: 8270D - Semivolatile Organic Compounds (GC/MS) 5 Matrix: Solid Lab Sample ID LCS 500-590448/2-A MB 500-590448/1-A Client Sample ID Lab Control Sample Method Blank Prep Type: Total/NA 6 Percent Surrogate Recovery (Acceptance Limits) 2FP PHL NBZ FBP TBP TPHL 7 (27-110) (20-100) (36-120) (34-110) (40-145) (40-145) 8 60 38 77 87 89 102 56 33 82 90 86 115 Surrogate Legend 2FP = 2-Fluorophenol (Surr) PHL = Phenol-d5 (Surr) NBZ = Nitrobenzene-d5 (Surr) FBP = 2-Fluorobiphenyl TBP = 2,4,6-Tribromophenol (Surr) 9 10 11 TPHL = Terphenyl-d14 (Surr) 12 Method: 8270D - Semivolatile Organic Compounds (GC/MS) Matrix: Solid Prep Type: TCLP 13 Lab Sample ID 500-196180-1 LB2 500-590170/1-C Client Sample ID Inlet Channel Sediment Method Blank 2FP (27-110) 63 59 Percent Surrogate Recovery (Acceptance Limits) PHL NBZ FBP TBP TPHL (20-100) (36-120) (34-110) (40-145) (40-145) 33 84 93 91 118 30 81 88 87 114 14 15 Surrogate Legend 2FP = 2-Fluorophenol (Surr) PHL = Phenol-d5 (Surr) NBZ = Nitrobenzene-d5 (Surr) FBP = 2-Fluorobiphenyl TBP = 2,4,6-Tribromophenol (Surr) TPHL = Terphenyl-d14 (Surr) Page 17 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: MB 500-590270/7 Matrix: Solid Analysis Batch: 590270 Analyte Acetone Benzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Cyclohexane Dibromochloromethane 1,2-Dibromo-3-Chloropropane 1,2-Dibromoethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Isopropylbenzene Methyl acetate Methylcyclohexane Methylene Chloride Methyl Ethyl Ketone methyl isobutyl ketone Methyl tert-butyl ether Styrene 1,1,2,2-Tetrachloroethane Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,1,2-Trichloro-1,2,2-trifluoroethane Vinyl chloride Xylenes, Total MB MB Result Qualifier <20 <2.0 <2.0 <2.0 <5.0 <5.0 <2.0 <2.0 <5.0 <2.0 <5.0 <2.0 <2.0 <2.0 <2.0 <5.0 <2.0 <2.0 <2.0 <2.0 <5.0 <2.0 <5.0 <2.0 <2.0 <2.0 <5.0 <2.0 <25 <2.0 <5.0 <5.0 <5.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <5.0 <2.0 <2.0 <4.0 RL MDL Unit 20 8.7 ug/Kg 2.0 0.51 ug/Kg 2.0 0.41 ug/Kg 2.0 0.58 ug/Kg 5.0 1.9 ug/Kg 5.0 1.0 ug/Kg 2.0 0.58 ug/Kg 2.0 0.74 ug/Kg 5.0 1.5 ug/Kg 2.0 0.69 ug/Kg 5.0 2.0 ug/Kg 2.0 0.56 ug/Kg 2.0 0.60 ug/Kg 2.0 0.77 ug/Kg 2.0 0.65 ug/Kg 5.0 2.0 ug/Kg 2.0 0.76 ug/Kg 2.0 0.73 ug/Kg 2.0 0.77 ug/Kg 2.0 0.74 ug/Kg 5.0 1.2 ug/Kg 2.0 0.69 ug/Kg 5.0 1.6 ug/Kg 2.0 0.69 ug/Kg 2.0 0.52 ug/Kg 2.0 0.96 ug/Kg 5.0 1.6 ug/Kg 2.0 0.72 ug/Kg 25 6.6 ug/Kg 2.0 0.69 ug/Kg 5.0 2.0 ug/Kg 5.0 2.2 ug/Kg 5.0 1.5 ug/Kg 2.0 0.59 ug/Kg 2.0 0.60 ug/Kg 2.0 0.64 ug/Kg 2.0 0.68 ug/Kg 2.0 0.51 ug/Kg 2.0 0.89 ug/Kg 2.0 0.70 ug/Kg 2.0 0.72 ug/Kg 2.0 0.67 ug/Kg 2.0 0.86 ug/Kg 2.0 0.68 ug/Kg 5.0 2.0 ug/Kg 2.0 0.90 ug/Kg 2.0 0.89 ug/Kg 4.0 0.64 ug/Kg Page 18 of 35 1 Job ID: 500-196180-1 2 3 Client Sample ID: Method Blank Prep Type: Total/NA 4 5 D Prepared Analyzed Dil Fac 03/25/21 11:05 16 03/25/21 11:05 1 03/25/21 11:05 03/25/21 11:05 17 1 03/25/21 11:05 03/25/21 11:05 18 1 03/25/21 11:05 03/25/21 11:05 19 1 03/25/21 11:05 03/25/21 11:05 1 10 1 03/25/21 11:05 03/25/21 11:05 11 11 03/25/21 11:05 03/25/21 11:05 1 1 12 03/25/21 11:05 03/25/21 11:05 03/25/21 11:05 03/25/21 11:05 03/25/21 11:05 03/25/21 11:05 03/25/21 11:05 1 1 13 1 1 14 1 1 15 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 03/25/21 11:05 1 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: MB 500-590270/7 Matrix: Solid Analysis Batch: 590270 Surrogate 1,2-Dichloroethane-d4 (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane MB MB %Recovery Qualifier 106 92 90 101 Limits 70 - 134 75 - 124 75 - 131 75 - 126 Job ID: 500-196180-1 Client Sample ID: Method Blank Prep Type: Total/NA Prepared Analyzed 03/25/21 11:05 03/25/21 11:05 03/25/21 11:05 03/25/21 11:05 Dil Fac 1 1 1 1 Lab Sample ID: LCS 500-590270/4 Matrix: Solid Analysis Batch: 590270 Analyte Acetone Benzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Cyclohexane Dibromochloromethane 1,2-Dibromo-3-Chloropropane 1,2-Dibromoethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Isopropylbenzene Methyl acetate Methylcyclohexane Methylene Chloride Methyl Ethyl Ketone methyl isobutyl ketone Methyl tert-butyl ether Styrene 1,1,2,2-Tetrachloroethane Tetrachloroethene Toluene Spike Added 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 100 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 Client Sample ID: Lab Control Sample Prep Type: Total/NA LCS LCS Result Qualifier 48.2 48.2 53.8 56.3 50.8 43.3 49.5 49.8 53.0 50.5 45.6 45.6 52.2 42.6 54.9 64.8 55.8 50.8 51.2 51.6 46.6 46.3 52.5 43.1 49.1 52.8 50.0 51.0 94.4 46.6 44.5 46.5 47.1 44.0 51.5 55.1 52.9 49.3 Unit ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg D %Rec 96 96 108 113 102 87 99 100 106 101 91 91 104 85 110 130 112 102 102 103 93 93 105 86 98 106 100 102 94 93 89 93 94 88 103 110 106 99 %Rec. Limits 40 - 150 70 - 125 67 - 129 68 - 136 70 - 130 70 - 129 75 - 125 50 - 150 75 - 125 57 - 135 70 - 125 70 - 125 70 - 125 70 - 125 69 - 125 60 - 136 70 - 125 70 - 125 70 - 125 70 - 125 75 - 125 70 - 125 70 - 130 70 - 120 70 - 125 61 - 136 48 - 146 70 - 125 70 - 125 70 - 125 70 - 126 47 - 138 50 - 148 50 - 140 70 - 125 70 - 122 70 - 124 70 - 125 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 19 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results Job ID: 500-196180-1 Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: LCS 500-590270/4 Matrix: Solid Analysis Batch: 590270 Analyte trans-1,2-Dichloroethene trans-1,3-Dichloropropene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,1,2-Trichloro-1,2,2-trifluoroetha ne Vinyl chloride Xylenes, Total Spike Added 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 100 Client Sample ID: Lab Control Sample Prep Type: Total/NA LCS LCS Result Qualifier 44.6 51.8 61.3 47.6 54.4 50.2 53.4 47.7 Unit ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg 41.5 ug/Kg 95.7 ug/Kg D %Rec 89 104 123 95 109 100 107 95 83 96 %Rec. Limits 70 - 125 70 - 125 65 - 128 70 - 128 70 - 125 70 - 125 70 - 134 70 - 128 70 - 125 53 - 147 Surrogate 1,2-Dichloroethane-d4 (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane LCS LCS %Recovery Qualifier 100 94 92 98 Limits 70 - 134 75 - 124 75 - 131 75 - 126 Lab Sample ID: LCSD 500-590270/5 Matrix: Solid Analysis Batch: 590270 Analyte Acetone Benzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Cyclohexane Dibromochloromethane 1,2-Dibromo-3-Chloropropane 1,2-Dibromoethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene Spike Added 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 Client Sample ID: Lab Control Sample Dup Prep Type: Total/NA LCSD LCSD Result Qualifier 45.3 47.7 52.6 58.2 50.1 43.2 50.0 49.7 54.0 50.2 46.5 45.9 53.0 41.5 56.6 61.4 56.3 50.4 50.8 51.9 45.8 46.1 52.2 42.9 49.3 51.6 Unit ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg D %Rec 91 95 105 116 100 86 100 99 108 100 93 92 106 83 113 123 113 101 102 104 92 92 104 86 99 103 %Rec. Limits 40 - 150 70 - 125 67 - 129 68 - 136 70 - 130 70 - 129 75 - 125 50 - 150 75 - 125 57 - 135 70 - 125 70 - 125 70 - 125 70 - 125 69 - 125 60 - 136 70 - 125 70 - 125 70 - 125 70 - 125 75 - 125 70 - 125 70 - 130 70 - 120 70 - 125 61 - 136 RPD 6 1 2 3 1 0 1 0 2 1 2 1 1 3 3 5 1 1 1 1 2 0 1 0 0 2 RPD Limit 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eurofins TestAmerica, Chicago Page 20 of 35 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results 1 Job ID: 500-196180-1 2 Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: LCSD 500-590270/5 Matrix: Solid Analysis Batch: 590270 Analyte 2-Hexanone Isopropylbenzene Methyl acetate Methylcyclohexane Methylene Chloride Methyl Ethyl Ketone methyl isobutyl ketone Methyl tert-butyl ether Styrene 1,1,2,2-Tetrachloroethane Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene Trichlorofluoromethane 1,1,2-Trichloro-1,2,2-trifluoroetha ne Vinyl chloride Xylenes, Total Spike Added 50.0 50.0 100 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 100 Client Sample ID: Lab Control Sample Dup Prep Type: Total/NA LCSD LCSD Result Qualifier 51.9 50.7 93.0 45.7 45.2 46.9 49.0 44.6 51.3 53.5 53.0 49.2 44.1 52.8 60.5 47.7 54.0 49.1 53.3 47.1 Unit ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg ug/Kg 41.6 ug/Kg 95.6 ug/Kg D %Rec 104 101 93 91 90 94 98 89 103 107 106 98 88 106 121 95 108 98 107 94 83 96 %Rec. Limits 48 - 146 70 - 125 70 - 125 70 - 125 70 - 126 47 - 138 50 - 148 50 - 140 70 - 125 70 - 122 70 - 124 70 - 125 70 - 125 70 - 125 65 - 128 70 - 128 70 - 125 70 - 125 70 - 134 70 - 128 70 - 125 53 - 147 RPD 4 1 1 2 2 1 4 1 0 3 0 0 1 2 1 0 1 2 0 1 RPD Limit 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0 30 0 30 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate 1,2-Dichloroethane-d4 (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane LCSD LCSD %Recovery Qualifier 104 96 92 98 Limits 70 - 134 75 - 124 75 - 131 75 - 126 Lab Sample ID: MB 500-590282/7 Matrix: Solid Analysis Batch: 590282 Analyte Benzene Carbon tetrachloride Chlorobenzene Chloroform 1,2-Dichloroethane 1,1-Dichloroethene Methyl Ethyl Ketone Tetrachloroethene Trichloroethene Vinyl chloride MB Result <0.0010 <0.0010 <0.0010 <0.0020 <0.0010 <0.0010 <0.0050 <0.0010 <0.0010 <0.0010 MB Qualifier Surrogate 1,2-Dichloroethane-d4 (Surr) MB MB %Recovery Qualifier 101 RL 0.0010 0.0010 0.0010 0.0020 0.0010 0.0010 0.0050 0.0010 0.0010 0.0010 MDL Unit 0.00050 mg/L 0.00050 mg/L 0.00050 mg/L 0.0010 mg/L 0.00050 mg/L 0.00050 mg/L 0.0025 mg/L 0.00050 mg/L 0.00050 mg/L 0.00050 mg/L Limits 75 - 126 Client Sample ID: Method Blank Prep Type: Total/NA D Prepared Analyzed Dil Fac 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 03/25/21 11:37 1 Prepared Analyzed Dil Fac 03/25/21 11:37 1 Page 21 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: MB 500-590282/7 Matrix: Solid Analysis Batch: 590282 Surrogate Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane MB MB %Recovery Qualifier 96 95 95 Limits 75 - 120 72 - 124 75 - 120 1 Job ID: 500-196180-1 2 3 Client Sample ID: Method Blank Prep Type: Total/NA 4 5 6 Prepared Analyzed Dil Fac 03/25/21 11:37 1 03/25/21 11:37 03/25/21 11:37 1 17 Lab Sample ID: LCS 500-590282/5 Matrix: Solid Analysis Batch: 590282 Analyte Benzene Carbon tetrachloride Chlorobenzene Chloroform 1,2-Dichloroethane 1,1-Dichloroethene Methyl Ethyl Ketone Tetrachloroethene Trichloroethene Vinyl chloride Surrogate 1,2-Dichloroethane-d4 (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane LCS LCS %Recovery Qualifier 97 97 93 97 Spike Added 0.0500 0.0500 0.0500 0.0500 0.0500 0.0500 0.0500 0.0500 0.0500 0.0500 Limits 75 - 126 75 - 120 72 - 124 75 - 120 LCS LCS 8 Client Sample ID: Lab Control Sample Prep Type: Total/NA 9 %Rec. Result Qualifier Unit 0.0483 mg/L D %Rec 97 Limits 70 - 120 10 0.0465 0.0474 mg/L mg/L 93 59 - 133 95 70 - 120 11 0.0446 0.0465 mg/L mg/L 89 70 - 120 93 68 - 127 12 0.0476 0.0442 0.0485 0.0494 0.0437 mg/L mg/L mg/L mg/L mg/L 95 67 - 122 88 46 - 144 97 70 - 128 99 70 - 125 87 64 - 126 13 14 15 Lab Sample ID: LB 500-590172/1-A Matrix: Solid Analysis Batch: 590282 LB LB Analyte Result Qualifier Benzene <0.020 Carbon tetrachloride <0.020 Chlorobenzene <0.020 Chloroform <0.040 1,2-Dichloroethane <0.020 1,1-Dichloroethene <0.020 Methyl Ethyl Ketone <0.10 Tetrachloroethene <0.020 Trichloroethene <0.020 Vinyl chloride <0.020 Surrogate 1,2-Dichloroethane-d4 (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Dibromofluoromethane LB LB %Recovery Qualifier 99 99 95 93 RL 0.020 0.020 0.020 0.040 0.020 0.020 0.10 0.020 0.020 0.020 Limits 75 - 126 75 - 120 72 - 124 75 - 120 MDL Unit 0.010 mg/L 0.010 mg/L 0.010 mg/L 0.020 mg/L 0.010 mg/L 0.010 mg/L 0.050 mg/L 0.010 mg/L 0.010 mg/L 0.010 mg/L Client Sample ID: Method Blank Prep Type: TCLP D Prepared Analyzed Dil Fac 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 03/25/21 12:03 20 Prepared Analyzed 03/25/21 12:03 03/25/21 12:03 03/25/21 12:03 03/25/21 12:03 Dil Fac 20 20 20 20 Page 22 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results Method: 8270D - Semivolatile Organic Compounds (GC/MS) Lab Sample ID: MB 500-590082/1-A Matrix: Solid Analysis Batch: 590442 MB MB Analyte Result Qualifier Acenaphthene <33 Acenaphthylene <33 Acetophenone <330 Anthracene <33 Atrazine <330 Benzaldehyde <1300 Benzo[a]anthracene <33 Benzo[a]pyrene <33 Benzo[b]fluoranthene <33 Benzo[g,h,i]perylene <33 Benzo[k]fluoranthene <33 1,1'-Biphenyl <170 Bis(2-chloroethoxy)methane <170 Bis(2-chloroethyl)ether <170 Bis(2-ethylhexyl) phthalate <170 4-Bromophenyl phenyl ether <170 Butyl benzyl phthalate <170 Caprolactam <330 Carbazole <170 4-Chloroaniline <670 4-Chloro-3-methylphenol <330 2-Chloronaphthalene <170 2-Chlorophenol <170 4-Chlorophenyl phenyl ether <170 Chrysene <33 Dibenz(a,h)anthracene <33 Dibenzofuran <170 3,3'-Dichlorobenzidine <170 2,4-Dichlorophenol <330 Diethyl phthalate <170 2,4-Dimethylphenol <330 Dimethyl phthalate <170 Di-n-butyl phthalate <170 4,6-Dinitro-2-methylphenol <670 2,4-Dinitrophenol <670 2,6-Dinitrotoluene <170 2,4-Dinitrotoluene <170 Di-n-octyl phthalate <170 Fluoranthene <33 Fluorene <33 Hexachlorobenzene <67 Hexachlorobutadiene <170 Hexachlorocyclopentadiene <670 Hexachloroethane <170 Indeno[1,2,3-cd]pyrene <33 Isophorone <170 2-Methylnaphthalene <67 2-Methylphenol <170 RL 33 33 330 33 330 1300 33 33 33 33 33 170 170 170 170 170 170 330 170 670 330 170 170 170 33 33 170 170 330 170 330 170 170 670 670 170 170 170 33 33 67 170 670 170 33 170 67 170 MDL Unit 6.0 ug/Kg 4.4 ug/Kg 83 ug/Kg 5.6 ug/Kg 97 ug/Kg 330 ug/Kg 4.5 ug/Kg 6.4 ug/Kg 7.2 ug/Kg 11 ug/Kg 9.8 ug/Kg 40 ug/Kg 34 ug/Kg 50 ug/Kg 61 ug/Kg 44 ug/Kg 63 ug/Kg 100 ug/Kg 83 ug/Kg 160 ug/Kg 110 ug/Kg 37 ug/Kg 57 ug/Kg 39 ug/Kg 9.1 ug/Kg 6.4 ug/Kg 39 ug/Kg 47 ug/Kg 79 ug/Kg 56 ug/Kg 130 ug/Kg 43 ug/Kg 51 ug/Kg 270 ug/Kg 590 ug/Kg 65 ug/Kg 53 ug/Kg 54 ug/Kg 6.2 ug/Kg 4.7 ug/Kg 7.7 ug/Kg 52 ug/Kg 190 ug/Kg 51 ug/Kg 8.6 ug/Kg 37 ug/Kg 6.1 ug/Kg 53 ug/Kg Page 23 of 35 1 Job ID: 500-196180-1 2 Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 590082 D Prepared Analyzed 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 Dil Fac 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 4 5 6 7 8 9 10 11 12 13 14 15 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results 1 Job ID: 500-196180-1 2 Method: 8270D - Semivolatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: MB 500-590082/1-A Matrix: Solid Analysis Batch: 590442 MB MB Analyte Result Qualifier 3 & 4 Methylphenol <170 Naphthalene <33 2-Nitroaniline <170 3-Nitroaniline <330 4-Nitroaniline <330 Nitrobenzene <33 2-Nitrophenol <330 4-Nitrophenol <670 N-Nitrosodi-n-propylamine <67 N-Nitrosodiphenylamine <170 2,2'-oxybis[1-chloropropane] <170 Pentachlorophenol <670 Phenanthrene <33 Phenol <170 Pyrene <33 2,4,6-Trichlorophenol <330 2,4,5-Trichlorophenol <330 RL MDL Unit 170 55 ug/Kg 33 5.1 ug/Kg 170 45 ug/Kg 330 100 ug/Kg 330 140 ug/Kg 33 8.3 ug/Kg 330 79 ug/Kg 670 320 ug/Kg 67 41 ug/Kg 170 39 ug/Kg 170 39 ug/Kg 670 530 ug/Kg 33 4.6 ug/Kg 170 74 ug/Kg 33 6.6 ug/Kg 330 110 ug/Kg 330 76 ug/Kg Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 590082 D Prepared Analyzed 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 03/24/21 08:05 03/25/21 21:32 Dil Fac 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Surrogate 2-Fluorophenol (Surr) Phenol-d5 (Surr) Nitrobenzene-d5 (Surr) 2-Fluorobiphenyl (Surr) 2,4,6-Tribromophenol (Surr) Terphenyl-d14 (Surr) MB MB %Recovery Qualifier 102 87 67 78 49 82 Limits 31 - 166 30 - 153 37 - 147 43 - 145 31 - 143 42 - 157 Prepared 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 03/24/21 08:05 Analyzed 03/25/21 21:32 03/25/21 21:32 03/25/21 21:32 03/25/21 21:32 03/25/21 21:32 03/25/21 21:32 Dil Fac 1 1 1 1 1 1 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Sample ID: LCS 500-590082/2-A Matrix: Solid Analysis Batch: 590442 Analyte Acenaphthene Acenaphthylene Acetophenone Anthracene Atrazine Benzo[a]anthracene Benzo[a]pyrene Benzo[b]fluoranthene Benzo[g,h,i]perylene Benzo[k]fluoranthene 1,1'-Biphenyl Bis(2-chloroethoxy)methane Bis(2-chloroethyl)ether Bis(2-ethylhexyl) phthalate 4-Bromophenyl phenyl ether Butyl benzyl phthalate Caprolactam Spike Added 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 LCS LCS Result Qualifier 1180 1180 1090 1230 1280 1180 1240 1270 1340 1180 1170 1080 1020 1140 1170 1110 1310 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 590082 %Rec. Unit D %Rec Limits ug/Kg 89 65 - 124 ug/Kg 89 68 - 120 ug/Kg 82 55 - 110 ug/Kg 92 70 - 114 ug/Kg 96 54 - 118 ug/Kg 88 67 - 122 ug/Kg 93 65 - 133 ug/Kg 95 69 - 129 ug/Kg 101 72 - 131 ug/Kg 88 68 - 127 ug/Kg 88 68 - 116 ug/Kg 81 60 - 112 ug/Kg 77 55 - 111 ug/Kg 85 72 - 131 ug/Kg 88 68 - 118 ug/Kg 83 71 - 129 ug/Kg 98 37 - 143 Page 24 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results Job ID: 500-196180-1 Method: 8270D - Semivolatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: LCS 500-590082/2-A Matrix: Solid Analysis Batch: 590442 Analyte Carbazole 4-Chloroaniline 4-Chloro-3-methylphenol 2-Chloronaphthalene 2-Chlorophenol 4-Chlorophenyl phenyl ether Chrysene Dibenz(a,h)anthracene Dibenzofuran 3,3'-Dichlorobenzidine 2,4-Dichlorophenol Diethyl phthalate 2,4-Dimethylphenol Dimethyl phthalate Di-n-butyl phthalate 4,6-Dinitro-2-methylphenol 2,4-Dinitrophenol 2,6-Dinitrotoluene 2,4-Dinitrotoluene Di-n-octyl phthalate Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno[1,2,3-cd]pyrene Isophorone 2-Methylnaphthalene 2-Methylphenol 3 & 4 Methylphenol Naphthalene 2-Nitroaniline 3-Nitroaniline 4-Nitroaniline Nitrobenzene 2-Nitrophenol 4-Nitrophenol N-Nitrosodi-n-propylamine N-Nitrosodiphenylamine 2,2'-oxybis[1-chloropropane] Pentachlorophenol Phenanthrene Phenol Pyrene 2,4,6-Trichlorophenol 2,4,5-Trichlorophenol Spike Added 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 2670 2670 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 1330 2670 1330 1330 1330 2670 1330 1330 1330 1330 1330 LCS LCS Result Qualifier 1450 1090 1350 1240 1260 1180 1170 1260 1160 930 1350 1300 966 1300 1230 1950 1380 1370 1350 1530 1270 1210 1230 1320 342 J 1110 1240 1180 1290 1250 1210 1240 1100 1100 1110 1150 1310 2400 987 1230 1050 1170 1190 1300 1000 1260 1290 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 590082 %Rec. Unit D %Rec Limits ug/Kg 109 65 - 142 ug/Kg 82 30 - 150 ug/Kg 102 65 - 122 ug/Kg 93 69 - 114 ug/Kg 95 64 - 110 ug/Kg 89 62 - 119 ug/Kg 88 63 - 120 ug/Kg 94 64 - 131 ug/Kg 87 66 - 115 ug/Kg 70 35 - 128 ug/Kg 101 58 - 120 ug/Kg 97 58 - 120 ug/Kg 72 60 - 110 ug/Kg 98 69 - 116 ug/Kg 92 65 - 120 ug/Kg 73 10 - 110 ug/Kg 52 10 - 100 ug/Kg 103 70 - 123 ug/Kg 101 69 - 124 ug/Kg 114 68 - 134 ug/Kg 95 62 - 120 ug/Kg 91 62 - 120 ug/Kg 92 63 - 124 ug/Kg 99 56 - 120 ug/Kg 26 10 - 133 ug/Kg 83 60 - 114 ug/Kg 93 68 - 130 ug/Kg 88 55 - 110 ug/Kg 97 69 - 112 ug/Kg 94 60 - 120 ug/Kg 91 57 - 120 ug/Kg 93 63 - 110 ug/Kg 83 57 - 124 ug/Kg 83 40 - 122 ug/Kg 83 60 - 160 ug/Kg 87 60 - 116 ug/Kg 98 60 - 120 ug/Kg 90 30 - 122 ug/Kg 74 56 - 118 ug/Kg 92 65 - 112 ug/Kg 79 40 - 124 ug/Kg 44 13 - 112 ug/Kg 89 62 - 120 ug/Kg 98 56 - 122 ug/Kg 75 61 - 128 ug/Kg 95 57 - 120 ug/Kg 97 50 - 120 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 25 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results 1 Job ID: 500-196180-1 2 Method: 8270D - Semivolatile Organic Compounds (GC/MS) (Continued) 3 Lab Sample ID: LCS 500-590082/2-A Matrix: Solid Client Sample ID: Lab Control Sample Prep Type: Total/NA 4 Analysis Batch: 590442 Prep Batch: 590082 LCS LCS 5 6 Surrogate 2-Fluorophenol (Surr) %Recovery Qualifier 111 Limits 31 - 166 Phenol-d5 (Surr) 92 Nitrobenzene-d5 (Surr) 84 2-Fluorobiphenyl (Surr) 94 2,4,6-Tribromophenol (Surr) 92 Terphenyl-d14 (Surr) 79 Lab Sample ID: MB 500-590448/1-A 30 - 153 37 - 147 43 - 145 31 - 143 42 - 157 7 8 9 Client Sample ID: Method Blank Matrix: Solid Analysis Batch: 590523 Prep Type: Total/NA 10 Prep Batch: 590448 Analyte MB MB Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 11 1,4-Dichlorobenzene Pyridine <0.0020 <0.020 0.0020 0.020 0.0020 mg/L 0.020 mg/L 03/25/21 18:42 03/26/21 12:39 03/25/21 18:42 03/26/21 12:39 1 1 12 2,4-Dinitrotoluene Hexachlorobenzene Hexachlorobutadiene Hexachloroethane 2-Methylphenol 3 & 4 Methylphenol Nitrobenzene <0.0010 <0.00050 <0.0050 <0.0050 <0.0020 <0.0020 <0.0010 0.0010 0.00050 0.0050 0.0050 0.0020 0.0020 0.0010 0.0010 mg/L 0.00050 mg/L 0.0050 mg/L 0.0050 mg/L 0.0020 mg/L 0.0020 mg/L 0.0010 mg/L 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 1 1 13 1 1 14 1 1 15 1 Pentachlorophenol <0.020 0.020 0.020 mg/L 03/25/21 18:42 03/26/21 12:39 1 2,4,6-Trichlorophenol <0.0050 0.0050 0.0050 mg/L 03/25/21 18:42 03/26/21 12:39 1 2,4,5-Trichlorophenol <0.010 0.010 0.010 mg/L 03/25/21 18:42 03/26/21 12:39 1 Surrogate 2-Fluorophenol (Surr) Phenol-d5 (Surr) Nitrobenzene-d5 (Surr) 2-Fluorobiphenyl 2,4,6-Tribromophenol (Surr) Terphenyl-d14 (Surr) MB MB %Recovery Qualifier 56 33 82 90 86 115 Limits 27 - 110 20 - 100 36 - 120 34 - 110 40 - 145 40 - 145 Prepared 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 Analyzed 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 03/26/21 12:39 Dil Fac 1 1 1 1 1 1 Lab Sample ID: LCS 500-590448/2-A Matrix: Solid Analysis Batch: 590523 Analyte 1,4-Dichlorobenzene Pyridine 2,4-Dinitrotoluene Hexachlorobenzene Hexachlorobutadiene Hexachloroethane 2-Methylphenol 3 & 4 Methylphenol Nitrobenzene Pentachlorophenol Spike Added 0.0400 0.0800 0.0400 0.0400 0.0400 0.0400 0.0400 0.0400 0.0400 0.0800 LCS LCS Result Qualifier 0.0254 0.0339 0.0378 0.0388 0.0262 0.0252 0.0297 0.0263 0.0321 0.0698 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 590448 %Rec. Unit D %Rec Limits mg/L 64 23 - 110 mg/L 42 15 - 110 mg/L 94 63 - 129 mg/L 97 61 - 126 mg/L 66 20 - 100 mg/L 63 20 - 100 mg/L 74 53 - 115 mg/L 66 50 - 116 mg/L 80 54 - 121 mg/L 87 42 - 148 Page 26 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results 1 Job ID: 500-196180-1 2 Method: 8270D - Semivolatile Organic Compounds (GC/MS) (Continued) 3 Lab Sample ID: LCS 500-590448/2-A Matrix: Solid Client Sample ID: Lab Control Sample Prep Type: Total/NA 4 Analysis Batch: 590523 Prep Batch: 590448 Analyte Spike LCS LCS %Rec. 5 Added Result Qualifier Unit D %Rec Limits 2,4,6-Trichlorophenol 2,4,5-Trichlorophenol 6 0.0400 0.0400 0.0366 0.0357 mg/L mg/L 92 62 - 121 89 63 - 124 Surrogate 2-Fluorophenol (Surr) Phenol-d5 (Surr) Nitrobenzene-d5 (Surr) 2-Fluorobiphenyl 2,4,6-Tribromophenol (Surr) Terphenyl-d14 (Surr) LCS LCS %Recovery Qualifier 60 38 77 87 89 102 Limits 27 - 110 20 - 100 36 - 120 34 - 110 40 - 145 40 - 145 7 8 9 10 Lab Sample ID: LB2 500-590170/1-C Client Sample ID: Method Blank 11 Matrix: Solid Analysis Batch: 590523 Prep Type: TCLP Prep Batch: 590448 12 Analyte 1,4-Dichlorobenzene Pyridine 2,4-Dinitrotoluene Hexachlorobenzene Hexachlorobutadiene LB2 LB2 Result Qualifier <0.020 <0.20 <0.010 <0.0050 <0.050 RL 0.020 0.20 0.010 0.0050 0.050 MDL Unit 0.020 mg/L 0.20 mg/L 0.010 mg/L 0.0050 mg/L 0.050 mg/L D Prepared Analyzed 03/25/21 18:42 03/26/21 14:31 03/25/21 18:42 03/26/21 14:31 03/25/21 18:42 03/26/21 14:31 03/25/21 18:42 03/26/21 14:31 03/25/21 18:42 03/26/21 14:31 Dil Fac 1 1 1 1 1 13 14 15 Hexachloroethane <0.050 0.050 0.050 mg/L 03/25/21 18:42 03/26/21 14:31 1 2-Methylphenol <0.020 0.020 0.020 mg/L 03/25/21 18:42 03/26/21 14:31 1 3 & 4 Methylphenol <0.020 0.020 0.020 mg/L 03/25/21 18:42 03/26/21 14:31 1 Nitrobenzene <0.010 0.010 0.010 mg/L 03/25/21 18:42 03/26/21 14:31 1 Pentachlorophenol <0.20 0.20 0.20 mg/L 03/25/21 18:42 03/26/21 14:31 1 2,4,6-Trichlorophenol <0.050 0.050 0.050 mg/L 03/25/21 18:42 03/26/21 14:31 1 2,4,5-Trichlorophenol <0.10 0.10 0.10 mg/L 03/25/21 18:42 03/26/21 14:31 1 Surrogate 2-Fluorophenol (Surr) Phenol-d5 (Surr) Nitrobenzene-d5 (Surr) 2-Fluorobiphenyl 2,4,6-Tribromophenol (Surr) Terphenyl-d14 (Surr) LB2 LB2 %Recovery Qualifier 59 30 81 88 87 114 Limits 27 - 110 20 - 100 36 - 120 34 - 110 40 - 145 40 - 145 Prepared 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 03/25/21 18:42 Analyzed 03/26/21 14:31 03/26/21 14:31 03/26/21 14:31 03/26/21 14:31 03/26/21 14:31 03/26/21 14:31 Dil Fac 1 1 1 1 1 1 Method: 6010B - Metals (ICP) Lab Sample ID: MB 500-589142/1-A Matrix: Solid Analysis Batch: 589384 MB MB Analyte Result Qualifier Aluminum 15.7 J Antimony <2.0 Arsenic <1.0 Barium <1.0 Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 589142 RL MDL Unit D Prepared Analyzed Dil Fac 20 8.2 mg/Kg 03/18/21 06:56 03/18/21 19:47 1 2.0 0.39 mg/Kg 03/18/21 06:56 03/18/21 19:47 1 1.0 0.34 mg/Kg 03/18/21 06:56 03/18/21 19:47 1 1.0 0.11 mg/Kg 03/18/21 06:56 03/18/21 19:47 1 Page 27 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results Method: 6010B - Metals (ICP) (Continued) Lab Sample ID: MB 500-589142/1-A Matrix: Solid Analysis Batch: 589384 MB MB Analyte Result Qualifier Beryllium <0.40 Cadmium 0.0554 J Calcium <20 Chromium <1.0 Cobalt <0.50 Copper <1.0 Iron 23.0 Lead <0.50 Magnesium 5.77 J Manganese 0.560 J Nickel <1.0 Selenium <1.0 Silver <0.50 Sodium <100 Thallium <1.0 Vanadium <0.50 Zinc <2.0 RL MDL Unit 0.40 0.093 mg/Kg 0.20 0.036 mg/Kg 20 3.4 mg/Kg 1.0 0.50 mg/Kg 0.50 0.13 mg/Kg 1.0 0.28 mg/Kg 20 10 mg/Kg 0.50 0.23 mg/Kg 10 5.0 mg/Kg 1.0 0.15 mg/Kg 1.0 0.29 mg/Kg 1.0 0.59 mg/Kg 0.50 0.13 mg/Kg 100 15 mg/Kg 1.0 0.50 mg/Kg 0.50 0.12 mg/Kg 2.0 0.88 mg/Kg Lab Sample ID: MB 500-589142/1-A Matrix: Solid Analysis Batch: 589573 MB MB Analyte Result Qualifier Potassium 22.0 J RL MDL Unit 50 18 mg/Kg 1 Job ID: 500-196180-1 2 3 Client Sample ID: Method Blank Prep Type: Total/NA 4 Prep Batch: 589142 D Prepared Analyzed 5 Dil Fac 03/18/21 06:56 03/18/21 19:47 03/18/21 06:56 03/18/21 19:47 16 1 03/18/21 06:56 03/18/21 19:47 03/18/21 06:56 03/18/21 19:47 17 1 03/18/21 06:56 03/18/21 19:47 03/18/21 06:56 03/18/21 19:47 18 1 03/18/21 06:56 03/18/21 19:47 03/18/21 06:56 03/18/21 19:47 11 9 03/18/21 06:56 03/18/21 19:47 03/18/21 06:56 03/18/21 19:47 1 1 10 03/18/21 06:56 03/18/21 06:56 03/18/21 06:56 03/18/21 06:56 03/18/21 06:56 03/18/21 06:56 03/18/21 06:56 03/18/21 19:47 03/18/21 19:47 03/18/21 19:47 03/18/21 19:47 03/18/21 19:47 03/18/21 19:47 03/18/21 19:47 1 1 11 1 1 12 1 1 13 1 Client Sample ID: Method Blank 14 PPrreepp TByaptec:hT: o5t8a9l/1N4A2 15 D Prepared Analyzed Dil Fac 03/18/21 06:56 03/19/21 20:25 1 Lab Sample ID: LCS 500-589142/2-A Matrix: Solid Analysis Batch: 589384 Analyte Aluminum Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Lead Magnesium Manganese Nickel Selenium Silver Sodium Thallium Spike Added 200 50.0 10.0 200 5.00 5.00 1000 20.0 50.0 25.0 100 10.0 1000 50.0 50.0 10.0 5.00 1000 10.0 LCS LCS Result Qualifier 210 46.7 9.91 217 4.96 4.93 942 18.8 47.8 24.3 106 9.35 967 50.6 49.1 8.66 4.58 1060 9.86 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 589142 %Rec. Unit D %Rec Limits mg/Kg 105 80 - 120 mg/Kg 93 80 - 120 mg/Kg 99 80 - 120 mg/Kg 109 80 - 120 mg/Kg 99 80 - 120 mg/Kg 99 80 - 120 mg/Kg 94 80 - 120 mg/Kg 94 80 - 120 mg/Kg 96 80 - 120 mg/Kg 97 80 - 120 mg/Kg 106 80 - 120 mg/Kg 94 80 - 120 mg/Kg 97 80 - 120 mg/Kg 101 80 - 120 mg/Kg 98 80 - 120 mg/Kg 87 80 - 120 mg/Kg 92 80 - 120 mg/Kg 106 80 - 120 mg/Kg 99 80 - 120 Page 28 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results 1 Job ID: 500-196180-1 2 Method: 6010B - Metals (ICP) (Continued) Lab Sample ID: LCS 500-589142/2-A Matrix: Solid Analysis Batch: 589384 Analyte Vanadium Zinc Spike Added 50.0 50.0 Lab Sample ID: LCS 500-589142/2-A Matrix: Solid Analysis Batch: 589573 Analyte Potassium Method: 6010C - Metals (ICP) Spike Added 1000 Lab Sample ID: LCS 500-590423/18-A Matrix: Solid Analysis Batch: 590577 Analyte Arsenic Barium Cadmium Chromium Lead Selenium Silver Spike Added 0.100 0.500 0.0500 0.200 0.100 0.100 0.0500 3 Client Sample ID: Lab Control Sample Prep Type: Total/NA 4 Prep Batch: 589142 LCS LCS %Rec. 5 Result Qualifier Unit D %Rec Limits 6 47.4 mg/Kg 47.7 mg/Kg 95 80 - 120 95 80 - 120 Client Sample ID: Lab Control Sample 7 Prep Type: Total/NA Prep Batch: 589142 8 LCS LCS %Rec. Result Qualifier Unit D %Rec Limits 9 948 mg/Kg 95 80 - 120 10 Client Sample ID: Lab Control Sample 11 Prep Type: Total/NA Prep Batch: 590423 12 LCS LCS Result Qualifier Unit D %Rec %Rec. Limits 13 0.102 0.521 0.0478 0.193 0.0931 mg/L mg/L mg/L mg/L mg/L 102 80 - 120 104 80 - 120 96 80 - 120 96 80 - 120 93 80 - 120 14 15 0.0994 mg/L 99 80 - 120 0.0464 mg/L 93 80 - 120 Lab Sample ID: LB2 500-590170/1-B Matrix: Solid Analysis Batch: 590577 LB2 LB2 Analyte Result Qualifier Arsenic <0.050 Barium <0.50 Cadmium <0.0050 Chromium <0.025 Lead <0.050 Selenium <0.050 Silver <0.025 RL 0.050 0.50 0.0050 0.025 0.050 0.050 0.025 MDL Unit 0.010 mg/L 0.050 mg/L 0.0020 mg/L 0.010 mg/L 0.0075 mg/L 0.020 mg/L 0.010 mg/L Client Sample ID: Method Blank Prep Type: TCLP Prep Batch: 590423 D Prepared Analyzed 03/25/21 16:52 03/26/21 11:49 03/25/21 16:52 03/26/21 11:49 03/25/21 16:52 03/26/21 11:49 03/25/21 16:52 03/26/21 11:49 03/25/21 16:52 03/26/21 11:49 03/25/21 16:52 03/26/21 11:49 03/25/21 16:52 03/26/21 11:49 Dil Fac 1 1 1 1 1 1 1 Method: 7470A - Mercury (CVAA) Lab Sample ID: MB 500-590763/12-A Matrix: Solid Analysis Batch: 590992 MB MB Analyte Result Qualifier Mercury <0.00020 RL 0.00020 MDL Unit 0.00020 mg/L Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 590763 D Prepared Analyzed Dil Fac 03/29/21 09:50 03/30/21 08:47 1 Page 29 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results 1 Job ID: 500-196180-1 2 Method: 7470A - Mercury (CVAA) (Continued) Lab Sample ID: LCS 500-590763/36-A Matrix: Solid Analysis Batch: 590992 Analyte Mercury Spike Added 0.00200 3 Client Sample ID: Lab Control Sample Prep Type: Total/NA 4 LCS LCS 5 Prep Batch: 590763 %Rec. Result Qualifier Unit D %Rec Limits 0.00192 mg/L 96 80 - 120 6 Lab Sample ID: LB2 500-590170/2-B Matrix: Solid Analysis Batch: 590992 LB2 LB2 Analyte Result Qualifier Mercury <0.00020 Method: 7471B - Mercury (CVAA) RL 0.00020 MDL Unit 0.00020 mg/L 7 Client Sample ID: Method Blank Prep Type: TCLP Prep Batch: 590763 8 9 D Prepared Analyzed Dil Fac 03/29/21 09:50 03/30/21 09:51 1 10 Lab Sample ID: MB 500-590363/12-A Matrix: Solid Analysis Batch: 590583 MB MB Analyte Result Qualifier Mercury <0.017 RL 0.017 MDL Unit 0.0056 mg/Kg Client Sample ID: Method Blank 11 Prep Type: Total/NA Prep Batch: 590363 12 13 D Prepared Analyzed Dil Fac 03/25/21 10:32 03/26/21 09:45 1 Lab Sample ID: LCS 500-590363/13-A Matrix: Solid Analysis Batch: 590583 Analyte Mercury Spike Added 0.167 LCS LCS Client Sample ID: Lab Control Sample 14 Prep Type: Total/NA Prep Batch: 590363 15 %Rec. Result Qualifier Unit D %Rec Limits 0.190 mg/Kg 114 80 - 120 Method: 9012B - Cyanide, Total andor Amenable Lab Sample ID: MB 500-589489/1-A Matrix: Solid Analysis Batch: 589529 MB MB Analyte Result Qualifier Cyanide, Total <0.24 Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 589489 RL MDL Unit D Prepared Analyzed Dil Fac 0.24 0.12 mg/Kg 03/19/21 13:05 03/19/21 16:30 1 Lab Sample ID: HLCS 500-589489/2-A Matrix: Solid Analysis Batch: 589529 Analyte Cyanide, Total Spike Added 12.0 HLCS HLCS Result Qualifier 12.0 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 589489 %Rec. Unit D %Rec Limits mg/Kg 100 90 - 110 Lab Sample ID: LCS 500-589489/3-A Matrix: Solid Analysis Batch: 589529 Analyte Cyanide, Total Spike Added 2.40 LCS LCS Result Qualifier 2.57 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 589489 %Rec. Unit D %Rec Limits mg/Kg 107 85 - 115 Page 30 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment QC Sample Results 1 Job ID: 500-196180-1 2 Method: 9012B - Cyanide, Total andor Amenable (Continued) 3 Lab Sample ID: LLCS 500-589489/4-A Matrix: Solid Analysis Batch: 589529 Analyte Cyanide, Total Spike Added 1.20 Client Sample ID: Lab Control Sample Prep Type: Total/NA 4 LLCS LLCS 5 Prep Batch: 589489 %Rec. Result Qualifier Unit D %Rec Limits 1.01 mg/Kg 84 75 - 125 6 Method: 9045D - pH Lab Sample ID: 500-196180-1 DU Matrix: Solid Analysis Batch: 589054 Sample Sample Analyte Result Qualifier pH 7.5 7 Client Sample ID: Inlet Channel Sediment Prep Type: Total/NA 8 DU DU Result Qualifier Unit D 7.5 SU RPD 9 RPD Limit 0.1 10 Method: 9071B - HEM and SGT-HEM Lab Sample ID: MB 500-590142/1-A Matrix: Solid Analysis Batch: 590361 MB MB Analyte Result Qualifier HEM (Oil & Grease) <500 11 Client SampPlereIDp:TMypeteh:oTdotBalla/NnAk 12 Prep Batch: 590142 13 RL MDL Unit D Prepared Analyzed Dil Fac 500 240 mg/Kg 03/24/21 10:56 03/25/21 10:31 1 14 Lab Sample ID: LCS 500-590142/2-A Matrix: Solid Analysis Batch: 590361 Analyte HEM (Oil & Grease) Spike Added 4000 Client Sample ID: Lab Control Sample 15 Prep Type: Total/NA Prep Batch: 590142 LCS LCS %Rec. Result Qualifier Unit D %Rec Limits 3610 mg/Kg 90 78 - 114 Page 31 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment Lab Chronicle 1 Job ID: 500-196180-1 2 Client Sample ID: Inlet Channel Sediment Date Collected: 03/11/21 08:40 Date Received: 03/16/21 13:38 Batch Batch Prep Type Type Method Run TCLP Leach 1311 TCLP Analysis 8260B TCLP TCLP TCLP Leach Prep Analysis 1311 3510C 8270D TCLP TCLP TCLP Leach Prep Analysis 1311 3010A 6010C TCLP TCLP TCLP Leach Prep Analysis 1311 7470A 7470A Total/NA Analysis 9045D Dilution Factor 20 1 10 1 1 Lab Sample ID: 500-196180-1 Matrix: Solid Batch Number 590172 590282 Prepared or Analyzed 03/24/21 14:55 03/25/21 12:29 Analyst CMS PMF 590170 03/24/21 13:15 CMS 590448 03/25/21 18:42 JP1 590523 03/26/21 15:55 NRJ 590170 03/24/21 13:15 CMS 590423 03/25/21 16:52 BDE 590577 03/26/21 11:56 JJB 590170 03/24/21 13:15 CMS 590763 03/29/21 09:50 MJG 590992 03/30/21 09:55 MJG 589054 SMO (Start) 03/17/21 16:31 (End) 03/17/21 16:34 Lab TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI TAL CHI 3 4 5 6 7 8 9 10 11 12 Total/NA Analysis Moisture Client Sample ID: Inlet Channel Sediment Date Collected: 03/11/21 08:40 Date Received: 03/16/21 13:38 Batch Batch Prep Type Type Method Run Total/NA Analysis 8260B 1 Dilution Factor 2 588986 03/17/21 09:55 LWN TAL CHI 13 Lab Sample ID: 500-196180-1 Matrix: Solid 14 Percent Solids: 37.5 15 Batch Prepared Number or Analyzed Analyst Lab 590270 03/25/21 11:31 PMF TAL CHI Total/NA Total/NA Prep Analysis 3541 8270D 590082 03/24/21 08:05 BSO TAL CHI 1 590442 03/25/21 23:50 NRJ TAL CHI Total/NA Total/NA Prep Analysis 3050B 6010B 589142 03/18/21 06:56 LMN TAL CHI 1 589384 03/18/21 20:48 EEN TAL CHI Total/NA Total/NA Prep Analysis 3050B 6010B 589142 03/18/21 06:56 LMN TAL CHI 1 589573 03/19/21 21:42 EEN TAL CHI Total/NA Total/NA Prep Analysis 3050B 6010B 589142 03/18/21 06:56 LMN TAL CHI 5 589573 03/19/21 21:45 EEN TAL CHI Total/NA Total/NA Prep Analysis 7471B 7471B 590363 03/25/21 10:32 PFK TAL CHI 1 590583 03/26/21 10:12 DAJ TAL CHI Total/NA Total/NA Prep Analysis 9010C 9012B 589489 03/19/21 13:05 MS 1 589529 03/19/21 17:16 MS TAL CHI TAL CHI Total/NA Total/NA Prep Analysis 9071B 9071B 590142 03/24/21 10:56 TMS TAL CHI 1 590361 JSB TAL CHI (Start) 03/25/21 10:31 (End) 03/25/21 15:32 Laboratory References: TAL CHI = Eurofins TestAmerica, Chicago, 2417 Bond Street, University Park, IL 60484, TEL (708)534-5200 Page 32 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Accreditation/Certification Summary Client: ArcelorMittal USA Inc. Project/Site: Inlet Channel Sediment 1 Job ID: 500-196180-1 2 3 Laboratory: Eurofins TestAmerica, Chicago All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report. Authority California Georgia Georgia (DW) Hawaii Illinois Indiana Iowa Kansas Kentucky (UST) Kentucky (WW) Louisiana Mississippi New York North Carolina (WW/SW) North Dakota Oklahoma South Carolina USDA Wisconsin Wyoming Program State State State State NELAP State State NELAP State State NELAP State NELAP State State State State US Federal Programs State State Identification Number 2903 N/A 939 NA IL00035 C-IL-02 082 E-10161 AI # 108083 KY90023 02046 NA 12019 291 R-194 8908 77001003 P330-18-00018 999580010 8TMS-Q Expiration Date 04-30-21 04-29-21 04-30-21 04-30-20 * 04-29-21 06-29-21 05-01-22 10-31-21 04-29-21 12-31-21 06-30-21 04-30-20 * 04-01-21 12-31-21 04-29-21 08-31-21 04-29-21 02-11-24 08-31-21 04-30-20 * 4 5 6 7 8 9 10 11 12 13 14 15 * Accreditation/Certification renewal pending - accreditation/certification considered valid. Page 33 of 35 Eurofins TestAmerica, Chicago 3/30/2021 Page 34 of 35 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 3/30/2021 1 Login Sample Receipt Checklist 2 Client: ArcelorMittal USA Inc. Job Number: 500-196180-1 3 Login Number: 196180 List Number: 1 Creator: Scott, Sherri L Question Radioactivity wasn't checked or is </= background as measured by a survey meter. The cooler's custody seal, if present, is intact. Sample custody seals, if present, are intact. The cooler or samples do not appear to have been compromised or tampered with. Samples were received on ice. Cooler Temperature is acceptable. Cooler Temperature is recorded. COC is present. COC is filled out in ink and legible. COC is filled out with all pertinent information. Is the Field Sampler's name present on COC? There are no discrepancies between the containers received and the COC. Samples are received within Holding Time (excluding tests with immediate HTs) Sample containers have legible labels. Containers are not broken or leaking. Sample collection date/times are provided. Appropriate sample containers are used. Sample bottles are completely filled. Sample Preservation Verified. There is sufficient vol. for all requested analyses, incl. any requested MS/MSDs Containers requiring zero headspace have no headspace or bubble is <6mm (1/4"). Multiphasic samples are not present. Samples do not require splitting or compositing. Residual Chlorine Checked. Answer True True True True True True True True True True True True True True True True True True True True N/A True True N/A 4 List Source: Eurofins TestAmerica, Chicago 5 Comment 6 7 8 9 10 2.3 11 12 13 14 15 Eurofins TestAmerica, Chicago Page 35 of 35 3/30/2021