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EPA Inspection Report - Page 1 of 170 Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) 09/23/24 - 9/25/2024 Air (CAA), RCRA NESHAP, NSPS, Title V, SIP Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) Parish: Facility Phone Number: Facility Contact: Union Carbide Corporation St. Charles Operations 355 LA HWY 3142 Hahnville, Louisiana, 70057 P.O. Box 50 Hahnville, Louisiana, 70057 St. Charles Parish (985) 783-4990 Charles Cuti crcuti@dow.com Leveraged Air Specialist FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: 110018861793 LDEQ AI - 2083 AFS #2208900001 325110, 325199 2869 Personnel participating in inspection: Colleen McCarthy EPA Region 6 / ECAD-AT Kara Allen EPA Region 6 / ECAD-AT Sophia Ong EPA Region 6 / ECAD-AT John Penland EPA Region 6 / ECAD-SR Benjamin Rosenthal EPA Region 6 / ECAD-AT Karina Kuc EPA Region 5 / ECAD-AECA Constantinos Loukeris EPA Region 5 / ECAD-AECA Victoria Nelson EPA Region 5 / ECAD-AECA Nathan Ward LDEQ Charles Cuti Dow Chemical Company ("Dow") Philip Speyrer Dow Jamie Williams Dow Lolita Tillery-Grant Gus Becnel Thomas Nichols Van LeGaux Ed Walden Jay Swart Lesly Holbrooks Reid Pichon Brett Motherne Dennis Fleming Donald Lyons Dow Dow Dow Dow Dow Dow Dow Dow Dow Think Environmental Think Environmental Life Scientist Life Scientist Physical Scientist Physical Scientist Physical Scientist Environmental Engineer Environmental Engineer Environmental Engineer Environmental Scientist Leveraged Air Specialist Environmental Leverage Specialist Senior Environmental Regional Delivery Leader EHS Delivery Leader Environmental Technician Leveraged Air Specialist Olefins 1 Technical Advisor EH&S Technologist Lead Olefins 1 Furnace Operator Olefins 1 Acid Gas Operator Olefins 1 Quench Operator Environmental Delivery Specialist LDAR Technician LDAR Technician 6ENFORM-019-R8.2 (02/12/2020) 1 EPA Inspection Report - Page 2 of 170 Michelle White Kurt Bitre Jason Lirette Renell Gales Barry Bradham Domingo Miller Eric Killian Lonnie Pitre EPA Lead Inspector Signature/Date Supervisor Signature/Date Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Dow Regulatory Affairs Leader Dow Technical Advisor Dow Olefins 2 Operator Dow Olefins 2 Operator Dow Senior Technician Dow Process Engineer Dow Run Plant Engineer Dow Technical Advisor COLLEEN MCCARTHY Colleen McCarthy Digitally signed by COLLEEN MCCARTHY Date: 2025.01.06 08:11:59 -06'00' Digitally signed by JAMES JAMES LEATHERS LEATHERS Date: 2025.01.06 08:25:20 -06'00' James Leathers Date Date 2 EPA Inspection Report - Page 3 of 170 Section I - INTRODUCTION Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 PURPOSE OF THE INSPECTION EPA Region 6 inspectors Kara Allen, Sophia Ong, Benjamin Rosenthal, and Colleen McCarthy ("I"), and EPA Region 5 inspectors Karina Kuc, Constantinos Loukeris, and Victoria Nelson ("we" or the "inspection team") arrived at the Union Carbide Corporation ("Union Carbide" or "UCC") St. Charles Operations ("SCO" or the "Facility") at 13:20 on September 23, 2024 for an unannounced inspection. Louisiana Department of Environmental Quality ("LDEQ") inspector Nathan Ward also participated in the inspection. We met with Lolita Tillery-Grant, EHS Delivery Leader; Philip Speyrer, Environmental Leverage Specialist; Jamie Williams, Senior Environmental Regional Delivery Leader; and Gus Becnel, Environmental Technician. I presented my credentials to Ms. Grant and informed them that this was an EPA inspection to determine compliance with the facility's Title V Air Permits and the Clean Air Act ("CAA"). The scope of the inspection is a partial compliance evaluation ("PCE") and includes evaluation of the facility's compliance with its Title V Operating Permits, Louisiana State Implementation Plan ("SIP"), and applicable CAA regulations listed under Parts 60, 61, and 63 of Title 40 of the Code of Federal Regulations ("CFR"). This inspection specifically focuses on the National Emission Standard for Benzene Waste Operations, 40 CFR Part 61 Subpart FF ("Subpart FF" or "BWON"). On September 24, 2024, EPA Region 6 inspector John Penland joined the inspection team. Inspector Penland conducted an unannounced inspection at the Facility for compliance with the Resource Conservation and Recovery Act ("RCRA"). This inspection focused on the generation and management of wastewater generated by operations at the Facility and was conducted in conjunction with the CAA inspection. Inspector Penland presented credentials to Mr. Philip Speyrer and informed Mr. Speyrer that he was on-site to conduct an inspection of the facility under the authority of Section 3007 of RCRA. FACILITY DESCRIPTION Union Carbide Corporation, a wholly owned subsidiary of the Dow Chemical Company, owns and operates the St. Charles Operations chemical manufacturing complex in Hahnville, Louisiana. It consists of over 15 different process units and operates 24 hours a day, 365 days a year. The Facility produces a range of products including, but not limited to, acrylic acid, acrolein, various amines, butanol products, alkyloxylates, various glycols, low-pressure polyethylene, ethylene, propylene, and ethylene oxide. Olefins Plant The Olefins Plant operates under Title V Permit No. 2422-V11 issued by LDEQ on February 27, 2024. The Plant contains two ethylene production units, Olefins 1 and Olefins 2, which are subject to the ethylene maximum allowable control technology ("EMACT") standards under 40 CFR Part 63 Subpart YY. Each unit utilizes furnaces to crack raw material (ethane, propane, or naphtha) into ethylene and other byproducts. The raw material is introduced to the furnaces as feedstock where it combines with process steam as a diluent. The combined stream passes through a preheater in the flue of the furnace and then enters the radiant side of the firebox, where the thermal reaction cracks the feed into ethylene, propylene, and other alkenes. The reaction products are then quenched in a quench tower to generate 3 EPA Inspection Report - Page 4 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 high pressure steam and cool the furnace gas. The furnace gas is sent to the fractionator and quench areas for cooling and product separation. In fractionation, the hot furnace gas is cooled with a quench oil cycle and the heavy pyrolysis fuel oil (C10+) is removed. The furnace gas then continues through a quench section where a quench water cycle further cools the gas, and dripolene (pyrolysis gasoline) is removed in a decanting operation. The dripolene removed is pumped to dripolene storage tanks owned and operated by Vopak. Some of the process streams from the decanter can be recovered in the tar pot and returned to the quench oil cycles. The water generated in the decanter goes through an oil-water separator before being treated in a process water stripper or is routed directly to a process water stripper. The effluent from the process water stripper can supply the dilution steam generator ("DSG") which then supplies dilution steam back to the furnaces. The DSG generated steam can also be routed to the wastewater treatment plant. The remaining furnace gas (C5 and lighter materials) is routed to suction drums and a compression system. Compression occurs in five stages. After the third stage suction drum, the compressed furnace gas goes through an acid gas system to remove carbon dioxide and neutralize any acid present in the gas. Wastewater generated in the acid gas systems, from spent caustic, is collected in process sewer sumps and routed to wastewater tanks 1311 or 1321. The wastewater in tanks 1311 and 1321 feeds the East and West wastewater strippers for treatment before the effluent is routed to the wastewater treatment plant. Following the acid gas system, the furnace gas continues compression in the fourth and fifth stages. After compression, the gas is dried, sent to cold separators, and routed through multiple distillation columns to recover ethylene, propylene, and other products. Many products from the Olefins Plant supply feed to other process units at the Facility or can be sent off-site. Wastewater Treatment Plant The wastewater treatment plant ("Environmental Operations" or "EOB") is located on-site at SCO. EOB handles and treats SCO's stormwater and individual plant-produced wastewater streams, and wastewater from Amerchol's Greensburg, Louisiana facility. EOB was owned and operated by Union Carbide until November 11, 2023. Since November 11, 2023, Dow Hydrocarbons and Resources, LLC owns the infrastructure assets at EOB. Dow InfraCo LLC operates the assets at EOB. Both Dow Hydrocarbons and Resources, LLC and Dow InfraCo LLC are sub-entities of the Dow Chemical Company. EOB operates under Title V Permit No. 2104-V6 issued by LDEQ on November 11, 2023. Section II - OBSERVATIONS September 23, 2024 The inspection team met with Union Carbide representatives, including Charles Cuti, Leveraged Air Specialist; Thomas Nichols, Leveraged Air Specialist; and Van LeGaux, Olefins 1 Technical Advisor who joined the opening conference virtually, in Union Carbide's conference room (see Appendix 3 for 4 EPA Inspection Report - Page 5 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 opening conference sign-in sheets). After presenting my credentials to Ms. Grant, I explained the scope of the inspection and planned inspection activities. We shared our intent to tour of the facility and conduct interviews with facility personnel throughout the inspection. I stated we would inspect the facility's wastewater systems, primarily focused on benzene-containing wastewater and the wastewater treatment plant. I explained that we would use flame ionization detectors ("FID") and optical gas imaging cameras ("OGIC") to monitor for emissions from equipment. Logs of photographs and videos taken during the inspection are found in Appendices 1 and 2, respectively. I also stated we would collect evacuated canister air samples for analysis of chemical species using EPA Method TO-15 ("Summa Samples"). EPA's Summa Sample results are found in Appendix 8. Union Carbide's Summa Sample results are found in Appendix 9. According to Union Carbide representatives, the only process unit at the Facility known to have benzene-containing wastewater is the Olefins Plant. The Olefins Plant is comprised of two Olefins units, referred to throughout this inspection report and by facility personnel as Olefins 1 and Olefins 2. The Olefins units are ethylene production units subject to the EMACT and generate waste required to comply with the requirements of 40 CFR Part 63 Subpart XX ("Subpart XX"). Subpart XX requires affected sources to comply with BWON. Union Carbide has reported that its aqueous waste is more than 10 megagrams ("Mg") of benzene per year; therefore, it is required to implement a strategy to control benzene emissions from the facility waste operations. Union Carbide elects to follow the BWON compliance option as described in 40 CFR 61.342(c), also known as the "2 Mg" option. Olefins Units Wastewater Overview During the opening conference, Mr. Cuti presented process flow diagrams ("PFDs") showing the general flow of streams through the Olefins units. According to the PFDs, many of the benzene-containing waste streams at the Facility are collected in drain hubs in Olefins 1 and Olefins 2 and drain to the respective unit's process sewer. Most of the drain hubs in the Olefins 1 and 2 are open to atmosphere. From the process sewers, the wastewater is routed to external floating roof tanks 1301, 1331, 1311, or 1321 ("wastewater tanks"). Benzene-containing waste streams from various sumps located at the docks and storage tanks are also routed to the wastewater tanks. The wastewater tanks are external floating roof tanks owned and operated by Vopak Industrial Infrastructure America St. Charles, LLC ("Vopak"). Vopak stores the benzene-containing wastewater and sends it back to Union Carbide where it is routed to one of three wastewater strippers ("WWS"). Union Carbide claims the waste streams from the wastewater tanks as controlled for benzene under BWON. Union Carbide owned and operated the wastewater tanks prior to their sale to Vopak in December 2020. When Union Carbide was operating the tanks, they were used as wastewater holding tanks to control the wastewater flow to the strippers. Mr. Cuti explained that Union Carbide communicates with Vopak about operations and does not coordinate or communicate about environmental compliance efforts. Union Carbide and Vopak have 5 EPA Inspection Report - Page 6 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 integrated personnel for operations at the site. Mr. Cuti also stated that Vopak does not certify compliance with Subpart FF regarding the management and operations of the wastewater tanks. I asked Union Carbide personnel if Union Carbide was aware that Vopak submitted a letter to LDEQ claiming non-applicability to Subpart FF and a permit application removing Subpart FF applicability from their permit. Mr. Cuti stated that Union Carbide was not aware of Vopak's letter or permit application removing Subpart FF applicability. [Area of concern ("AOC") 1 and 24] The wastewater stored in tanks 1301 and 1331 goes to the #3 WWS. Mr. Cuti stated the #3 WWS is a steam stripper that was installed in the plant around 1998 and that the #3 WWS was certified for use as a Subpart FF WWS in 2015 for treatment of benzene-containing wastewater. The effluent of the #3 WWS is monitored with a benzene analyzer that automatically controls flow direction. If the effluent of the #3 WWS measures greater than 475 parts per billion ("ppb") benzene, the stream is routed back to tanks 1301 and 1331. If the effluent of the #3 WWS measures less than 475 ppb benzene, the stream is routed to EOB for treatment. The PFDs presented by Mr. Cuti indicated the wastewater stored in tanks 1311 and 1321 is generated from the acid gas systems at the Olefins units. Olefins 1 and 2 have separate acid gas systems. In the acid gas systems, Union Carbide identified wastewater streams subject to BWON from the MEA sumps, NaOH sumps, and caustic decanters that are routed to tanks 1311 and 1321. From tanks 1311 and 1321, the wastewater is routed to the East and West WWSs. The East and West WWSs were installed approximately in 1998. They operate similarly to the #3 WWS and have continuous benzene analyzers measuring the effluent concentration to determine if flow should be directed back to wastewater tanks or to EOB. The inspection team also inquired about the stormwater system. Union Carbide representatives described the stormwater system which collects stormwater and routes it to one of three stormwater skimmers. From the skimmers, the stormwater is pumped to stormwater tank T-702. T-702 acts as a storage tank for the stormwater in the Olefins units prior to being routed to EOB through a stormwater header. Prior to making it to EOB, the stormwater is analyzed for benzene. If the benzene analyzer detects greater than 475 ppb benzene, it is diverted to the wastewater tanks. [AOC 2] We also discussed the DSGs in the Olefins units. According to Mr. LeGaux, use of the DSG varies by unit and the Olefins 1 DSG has not been used in approximately two years. Olefins 2 runs the DSG intermittently. When the DSGs run, quench water is routed through the process water stripper and the tails can be routed to the DSG or directly to EOB. According to Mr. LeGaux, approximately two thirds of the process water stripper steam is converted to dilution steam and routed back to the furnaces. Excess dilution steam is sent to EOB. The blowdown steam from the DSG is monitored with a continuous benzene analyzer. If the analyzer measures greater than 475 ppb benzene, the blowdown steam is routed to wastewater tanks through the process sewers. If the analyzer measures less than 475 ppb benzene, the blowdown steam can be routed directly to EOB [AOC 5]. Union Carbide identified the stream from the process water strippers to the DSGs as points of waste generation ("POG") as defined by 40 CFR 61.341. [AOC 6] 6 EPA Inspection Report - Page 7 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Total Annual Benzene ("TAB") During the opening conference, the inspection team and Union Carbide personnel also discussed how the TAB quantity for the Facility is determined. Mr. Cuti displayed two Microsoft Excel spreadsheets and a previously submitted TAB report for EPA inspectors to review. One spreadsheet was a TAB report workbook with sampling data and analyses used to generate the TAB report for compliance with the reporting requirements in 40 CFR 61.357. The second spreadsheet identified POGs, as determined by Union Carbide, and PFDs for the Olefins units. Upon initial review of the TAB report Mr. Cuti shared, we noted Union Carbide reported a total of 17 POG locations (See Appendix 4: Previous TAB Reports). EPA evaluated the reported streams and noted that many of the POGs included points downstream of where the waste would have exited the process or a waste management unit ("WMU"). Union Carbide identifies multiple streams feeding into drain hubs, process sewers, and sumps as a POG. As confirmed by Mr. Cuti, Union Carbide considers these POGs at the point in which they are combined. [AOCs 2, 6] Mr. Cuti told EPA inspectors that Union Carbide bases the TAB report off characteristics of the process sewers determined in 1999. The 1999 evaluation of the process sewer claims no stream was greater than 10 parts per million ("ppm") benzene in the individual drain systems ("IDS"). Ms. Grant and Mr. Cuti indicated that, to their knowledge, the Facility has not conducted any re-evaluations or sampling of the IDS streams since the late 1990s. [AOCs 2, 6, 7] According to TAB reports, the only streams Union Carbide considers controlled for benzene emissions are the East, West, and #3 WWS feeds, and wastes sent off-site for disposal. The streams feeding each WWS come from the wastewater tanks at Vopak [AOC 1, 6, 8, 24]. Mr. Cuti presented PFDs that included labels identifying where Union Carbide claims POG locations. We noted that Union Carbide identified POGs at the Olefins 1 and 2 hubs prior to entering the process water sewers and at various sumps before combining at the wastewater tanks. I described that based on the PFDs, the POGs are being counted multiple times and Mr. Cuti agreed with that description. Mr. Cuti was unsure how the POG locations were identified. [AOCs 2, 6, 7] A column on the TAB report is labeled "Will stream be controlled for benzene?" and I asked Mr. Cuti how the values (yes or no) in the column were determined. Mr. Cuti indicated that the column is intended to show which streams Union Carbide claims as controlled or uncontrolled to calculate the TAB quantity and demonstrate compliance with the 2 Mg option. Mr. Cuti also described how UCC calculates the TAB quantity by using historic sampling data, monthly sampling data, or continuous benzene analyzer data at POGs. Mr. Cuti stated that the determination for whether the stream is controlled is based on the sampling data and not based on how the stream was managed throughout the reporting year. [AOCs 8, 24, 25] Following the discussions about the facility operations, I explained our planned inspection activities for the following day, including our intent to inspect the Olefins units and conduct monitoring with FIDs and 7 EPA Inspection Report - Page 8 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 OGICs. EPA inspectors requested information on ethylene oxide ("EtO") industrial hygiene ("IH") monitoring and the respective data. Mr. Cuti indicated he would communicate with UCC staff responsible for IH monitoring and records and provide the data to us for our review before entering process units the next day. I also summarized records we requested throughout the opening conference (See Appendix 5 for Inspection Document Requests). At 16:48, EPA inspectors watched the Facility's safety video. At 17:00, EPA inspectors departed the Facility. September 24, 2024 On September 24, 2024, we arrived at the Facility at 08:40 and met Mr. Cuti. John Penland, EPA Region 6 RCRA inspector, joined the inspection team. We discussed our intent to conduct a tour of the Olefins 1 and 2 units and conduct EPA Method 21 monitoring with FIDs and utilize OGICs to screen for emissions. Calibration gas information and FID calibration information for the inspection is found in Appendix 6. FID field measurement data is found in Appendix 7. Mr. Cuti escorted us to the conference room where we met with Ed Walden, EH&S Technologist Lead. Mr. Walden told EPA inspectors that Union Carbide maintains EtO industrial hygiene data from badges in process areas. EPA inspectors requested the EtO industrial hygiene data for a second time on September 24, 2024, and Mr. Walden indicated that Union Carbide would provide the badge data including all lab analyses, analytical methods, locations of industrial hygiene monitors, and chain of custody forms to EPA. While in the conference room, Union Carbide provided a blank Subpart FF visual inspection form as requested during our discussion during the opening conference. Mr. Cuti stated all visual inspections the Facility completes for Subpart FF are identified on the form. The form only identified inspections for the three WWSs and associated closed vent systems. The forms did not identify any other waste management units. [AOCs 2, 3] Olefins 1 Control Room At 09:50, we arrived at the Olefins 1 control room. We met Jay Swart, Olefins 1 Furnace Operator, who showed us the Olefins 1 control board he monitors. Mr. Swart explained that Olefins 1 receives propane or ethane as raw material to feed the furnaces. Olefins 1 has a total of 11 furnaces: seven Lummus furnaces, two carbide furnaces, and two SWEC furnaces. The SWEC furnaces are twin cells and can also use naphtha as a feedstock. The furnaces crack the feed gas which produces steam. Steam is sent to the superheater which turns the turbines. The cracked gas from the Lummus and carbide furnaces is then sent to the North quench system and the cracked gas from the SWEC furnaces is sent to the South quench system. 8 EPA Inspection Report - Page 9 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Mr. Swart indicated that Olefins 1 routes process water to a DSG but it is used intermittently. At the time of inspection, Olefins 1 was not running the DSG. Mr. Swart stated the four reboilers operate at the DSG drum where dilution steam is generated and subsequently fed back to the furnaces. Condensate is sent to two deaerators which feed boilers and ultimately feeds back to the furnaces. When the DSG is running, the DSG blowdown is cooled and is hard piped to EOB if the benzene analyzer measures that the blowdown meets specification ("on-spec"). If the blowdown from DSG does not meet specification ("off-spec"), the stream is directed to the #3 WWS via tanks 1301 or 1331. [AOC 5] After reviewing the furnace control board, inspectors met Reid Pichon, Olefins 1 Quench Operator, to review the quench systems control board. Mr. Pichon showed the inspection team that gas from the Lummus and carbide furnaces goes to the north quench tower (DA-1445). The quench water from DA1445 is routed to a decanter (FA-1449) where the oil is decanted, routed to the tar pot (FA-1446), and then sent to the fractionator (DA-101) in the south quench system. Mr. Pichon and Mr. Cuti confirmed that the tar pot receives pyrolysis gas. The water separated in the decanter is sent to an oil water separator (FA-1456) which has a dripolene weir. The dripolene is pumped to storage at Vopak and the water is routed to the process water stripper (DA-1463). The south quench system receives gas from the SWEC furnaces at the fractionator (DA-101). The fractionator assists in the removal of heavy pyrolysis fuel oil. The stream of heavy pyrolysis fuel oil is sent to a fuel oil stripper (FA-102). From FA-102, fuel oil is routed to a fuel oil storage tank and a stream is routed back to the fractionator. The main furnace gas line off the fractionator goes to the south quench tower (DA-103). The quench water from DA-103 is routed to a decanter (FA-119) to separate out any oils including dripolene. The oil from the decanter is pumped to dripolene storage tanks at Vopak or used in the unit. The water from FA-119 is sent to the process water stripper (DA-1463). Mr. Pichon indicated the tails of DA-1463 are monitored with continuous benzene and total organic carbon ("TOC") analyzers. At the time of inspection, the tails of DA-1463 were directed to EOB. At 10:11, the analyzers were reading 51.39 ppm TOC and 140 ppb benzene. Mr. Cuti noted that the process water stripper tails will divert to wastewater tanks 1301 or 1331 if the analyzers measure 475 ppb benzene or 500 ppm TOC. Following the north and south quench towers, the furnace gas continues through compression. Mr. Pichon displayed the stages of compression on the control board and noted that the furnace gas goes through five stages of compression in a total of eight suction drums. After the third stage of compression, the compressed gas is sent to the acid gas system. We met Lesly Holbrooks, Acid Gas Operator, to review the acid gas system control board. Mr. Holbrooks described the process in which the compressed gas is received from the third stage discharge separator and can go through the MEA cycle or caustic tower. Mr. Holbrooks indicated that the MEA cycle was down at the time of inspection, so the system was running the caustic tower. Blowdowns from the caustic tower are captured in a knock-out pot ("KO pot"), FA-126. The KO pot knocks out caustic and dripolene and is routed to the decanter (FA-163). Dripolene decanted is routed to the south quench system and water is routed to tank 1321. Gas from the KO pot is routed to the Olefins 1 flare. After the 9 EPA Inspection Report - Page 10 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 acid gas system, the furnace gas continues compression in the fourth stage and then fifth stage before continuing to distillation columns. We also noticed that the control board in Olefins 1 included the stormwater skimmers and stormwater tank, T-702. Operators stated drains in the Olefins 1 unit collect at skimmers. Olefins 1 has two skimmers, East and West. The oil from the skimmers is directed to wastewater tanks 1301 and 1331. The stormwater is pumped to T-702. From T-702, water is routed to EOB for treatment. At the time of inspection, we observed the analyzer reading 0 ppb benzene from T-702. While in the control room, we discussed with Union Carbide personnel that various pieces of equipment that may be generating and discharging benzene-containing wastewater were not included in the TAB reports or POGs identified as reviewed the previous day. [AOC 6] Olefins 1 Field Observations At 10:30, EPA inspectors departed from the Olefins 1 control room to enter the Olefins 1 unit for field observations. Two Think Environmental Leak Detection and Repair ("LDAR") technicians, Dennis Fleming and Donald Lyons, joined to conduct concurrent monitoring with EPA inspectors. Union Carbide contracts Think Environmental ("Think") to conduct LDAR monitoring throughout the Facility. FID field measurement data for September 24, 2024, is included in Table 1 of Appendix 7. EPA inspectors monitored various stage suction drums in the gas compression system. Inspector Ong climbed FA-1477, a third stage suction drum, and conducted Method 21 monitoring on the accessible components at the platform. I also climbed FA-1477 with an OGIC and observed that the closed vent system was not accessible for complete visual inspection from the existing platform. [AOC 4] Inspector Ong monitored the equipment at the platform which appeared to be regulators and pressure gauges (Photos 2, 3, and 4). Inspector Ong's FID flamed out twice while monitoring at the gauges. [AOC 9] Mr. Lyons told Inspector Ong that Think does not monitor the instrumentation on suction drums. Inspector Nelson conducted Method 21 monitoring at FA-1476, a second stage suction drum, and detected greater than 10,000 ppm VOC on regulators and gauges at the platform at the top of the drum. [AOC 9] Mr. LeGaux observed Inspector Nelson's FID measurements during the monitoring event. Mr. LeGaux indicated that he believed the gauges on the first through third stage suction drums were methane blowback lines and our FID were reading methane only. While monitoring the components on the second stage suction drum, Inspector Nelson observed New Source Performance Standard ("NSPS") tags 3Y56275 and 3Y56276. North of suction drums FA-1476 and FA-1477, inspectors observed a dimethyl sulfide ("DMS") sump and noted strong odors. At 11:46, EPA Inspectors Ong and Rosenthal climbed a 5th stage suction drum, FA-1479, to conduct Method 21 monitoring (Photo 9 and 10). I was told by Mr. LeGaux that the 4th and 5th stage suction 10 EPA Inspection Report - Page 11 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 drums had blowback lines like the first through third stages, except the 4th and 5th stages were ethylene blowback. [AOC 9] While on the platform of FA-1479, Inspector Rosenthal observed a plug hanging from a potential openended line on an overhead line north of the suction drum (Photo 8). [AOC 10] The origin of the line could not be determined. Inspector Loukeris conducted Method 21 monitoring near the south quench decanter, FA-119. Inspector Loukeris detected emissions greater than 500 ppm VOC at various decanter drains to the Olefins 1 process sewer (Photo 1 and Videos 1, 2, and 3). Mr. Fleming was unable to confirm those readings with Think's FID. However, Inspector Nelson monitored the same locations and confirmed Inspector Loukeris's observations. Inspector Loukeris also conducted Method 21 monitoring at the Old Tar Pot, FA-1446, and detected above 3,000 ppm VOC at various locations. Inspectors Loukeris and Allen noted that the oil-water separator, FA-1456, was not accessible for monitoring by platform, roof, or ladder (Photo 6). [AOC 4] Throughout the Olefins 1 unit, EPA inspectors observed various process sewer drain hubs open to the atmosphere (Photos 5, 11, 12, 13, 17, 18, and 21). Several drains were observed with multiple lines leading into them and with FID detections above 500 ppm VOC [AOCs 1, 2, 6, 12]. The drain of condensate stripper DA-107 was observed with two lines, one of which was feeding into the drain hub and one that was leading directly to the ground. Inspectors observed that the line feeding the drain hub was not leaking but the line outside the drain hub was observed dripping directly on the ground [AOC 11]. In the afternoon, we continued our field observations in the Olefins 1 unit. I continued Method 21 monitoring at a fourth stage suction drum, FA-1478. I observed regulators and pressure gauges at the platform on top of FA-1478 and detected up to 12,500 ppm VOC. An Olefins 1 Operator stated that each stage of furnace gas compression has a knock-out, or suction drum, associated. The operator stated the 4th and 5th stages of compression have ethylene blowback as stated by Mr. LeGaux previously. EPA inspectors continued to the flare KO drums, FA-1490 and FA-115. Inspectors observed that the KO drums were elevated and did not have accessible monitoring points to conduct monitoring or visual inspections. An Olefins Operator indicated that Think monitors flanges and valves at the top of the flare KO drums with very long extender poles for their FID probes. We also observed a drain line from FA1490 that leads to an open drain (Photo 14). [AOC 2] I monitored the pump area around the flare KO drums and did not observe elevated measurements. The pumps were not running at the time of monitoring. I then monitored the KO pot, FA-126, off the caustic tower. To conduct Method 21 at the overhead piping of the KO drums, I had to climb the scaffolding around the caustic tower and reach through the platform grating and cage spindles with the FID probe. [AOCs 3, 4] 11 EPA Inspection Report - Page 12 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 EPA inspectors observed the three skimmers servicing stormwater from the Olefins units. No emissions were detected with the FID and no emissions were observed with the OGIC from the east and west skimmers. The Olefins 2 skimmer was observed receiving a hot steam stream from Olefins 2 (Photo 15 and 16, Video 7) [AOC 13]. At 16:45, we returned the conference room. I reviewed the inspection activities conducted during the day and reviewed records requests. Charles Cuti, Lolita Tillery-Grant, Jamie Williams, Brett Motherne, Environmental Delivery Specialist, Thomas Nichols, Gus Becnel, and Michelle White, Regulatory Affairs Leader for Louisiana, and the inspection team were present for the debrief. I requested the analyzer data for each TOC and benzene analyzer at the facility for the last five years, the valve position and flow data for T-702, the valve position at the DSGs, a process sewer diagram, no detectable emissions testing data for Subpart FF monitored components, the location of field water decanter, BWON manual and/or training documentation, completed Subpart FF visual inspections, preventative maintenance records for TOC and benzene analyzers, and analyzer specification sheets. I provided notice to Mr. Cuti that EPA would be collecting Summa Samples on September 25, 2024. Email correspondence between Mr. Cuti and I regarding the sampling analysis plan is included in Appendix 5. We departed the facility at 17:35 on September 24, 2024. September 25, 2024. EPA inspectors arrived at the Facility at 08:30 on September 25, 2024, and met with Mr. Cuti. EPA inspectors calibrated equipment prior to going to the Olefins 2 control room at 09:30. Olefins 2 Control Room At the Olefins 2 Control Room, we met with Kurt Bitre, Technical Advisor, and Jason Lirette, Operator. According to Mr. Lirette, Olefins 2 has ten furnaces: nine are the same size, and one is smaller. At the time of inspection, Olefins 2 was operating nine furnaces. One furnace was going through a decoking operation and not receiving feed. Mr. Lirette explained that the furnaces typically receive ethane or propane as feed. Furnace gas then goes to the fractionator, DA-3101. The bottoms of the fractionator go through the quench oil recycle and the overheads go to the quench tower and then compressors. Next, we met with Renell Gales, Operator, to discuss the gas compression stage. The gas goes through five stages of compression. FA-3201 is the first stage compressor, or suction drum. Liquid from the first stage suction drum goes back to the quench tower. The second stage suction drum is FA-3202. Liquids from the second stage compressor go back to the first stage. This process continues through the third stage of compression. The liquids from Stages 4 and 5 are routed to the third stage to repeat the third stage compression. The suction drums can drain to the wet flare KO pot, FA-3901, if they reach capacity 12 EPA Inspection Report - Page 13 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 or if operations identify issues with the first stage suction drum. Liquids from the wet flare KO pot are routed to the quench tower. The quench tower, DA-3104, supports dripolene and water separation. Dripolene from the quench tower returns to the fractionator and process water is sent to the process water stripper, DA-3106. The effluent of the process water stripper usually goes to the DSG, FA-3111, and is also equipped with TOC and benzene analyzers. If the bottoms of the process water stripper or DSG are on-spec, the stream is routed to EOB. If the bottoms are off-spec, the stream is routed to the wastewater tanks 1301 or 1331. At the time of inspection, the stream was being routed to EOB. If the DSG is running too high, the feed will trip and route to EOB or the wastewater tanks. The DSG blowdown is normally routed to the process water stripper or to the hot water sump. Olefins 2 also has an acid gas system that can run an MEA or caustic cycle. Furnace gas is fed through the cycle and carbon dioxide is extracted and acid gases neutralized. The caustic tower, DA-3204, tails go to a spent caustic drum, FA-3212. According to UCC the spent caustic pot is routed to wastewater tanks 1321 or 1311. From the MEA still, DA-3203, tails are routed to a reflux drum, FA-3205. The reflux drum is routed to the spent caustic drum. EPA inspectors departed from the Olefins 2 control room at 10:15. EPA inspectors split into two teams. One team inspected the Olefins 2 unit and the other team returned to Olefins 1 to collect Summa Samples and continue monitoring. Olefins 2 Unit Inspectors Kuc, Loukeris, Nelson, and Ong ("they") entered the Olefins 2 unit at 10:40. They conducted Method 21 monitoring throughout the unit. Field measurement data collected on September 25, 2024, can be found in Table 2 of Appendix 7. Throughout Olefins 2, EPA inspectors observed open process sewer drain hubs and a roll off box labeled VB27168 with elevated VOC measurements. EPA inspectors also noted that access to various equipment was limited or not available. Inspector Loukeris observed a small blowdown drum, FA-3805, with no access to monitor a valve and a pressure safety vent. Another blowdown drum, FA-3806, was observed with an open stem venting to atmosphere with no access to monitor. The wet flare drum, FA-3904, was observed with a pressure safety vent that vents to atmosphere but with no platform access to monitor. [AOC 3, 4] Inspector Nelson monitored suction drums FA-3201, FA-3202, FA-3203, and FA-3207. On FA-3201, elevated VOC readings were detected on a valve stem. Barry Bradham, Senior Technician, tightened bolts on the valve steam and the FID measurement was 4.8 ppm VOC following the repair. Inspector Nelson observed visible signs of leaks on FA-3202 and at a drill and tap plug on FA-3023. Mr. Bradham observed the leaks at FA-3202 and FA-3203. 13 EPA Inspection Report - Page 14 of 170 Olefins 1 Summa Sample Collection Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Inspectors Allen, Rosenthal, and I ("we") returned to Olefins 1 at 10:30 to collect Summa Samples. Mr. Cuti and Mr. Lyons joined the EPA inspectors while collecting the samples. At 10:38, we arrived at the Old Tar Pot, FA-1446. On September 24, 2024, EPA monitoring recorded a measurement of 3,300 ppm VOC at a regulator near the component tagged PCV-1446F-10. On September 25, 2024, EPA remonitored the regulator and detected 14,000 ppm VOC. Mr. Lyons confirmed EPA's reading with Think's FID at 50,000 ppm VOC. EPA inspectors noted that no leak tag was placed on the component the previous day or upon remonitoring. [AOC 14] At 10:56, I collected a Summa Sample (canister 11606) at the western side of the regulator gasket where the FID measurements were taken (Photo 20). This was collected as an approximately 25-second grab sample. This sample contained 597 ppb benzene. Inspector Rosenthal operated an OGIC and observed hydrocarbon emissions from the regulator (Video 8). Mr. Cuti witnessed the sample collection and told EPA inspectors that Union Carbide would be collecting 24-hour summa samples on September 26, 2024 at the same location EPA collected samples. At 11:09, we arrived at the #3 WWS. Inspectors Allen and Rosenthal climbed several platforms up the #3 WWS (DA-116-R). No emissions were detected with the FID and no emissions were observed with the OGIC. Inspectors noted that there appeared to be a blind flange at the top of the stripper that was not accessible by platform or scaffolding. It is unclear if Union Carbide is able to complete visual inspection or monitoring at this location. [AOCs 3, 4] Mr. Cuti stated that Think conducts quarterly Method 21 monitoring at the #3 WWS. At 11:40, we returned to the base of suction drum FA-1481 where we observed one line from the suction drum feeding the process sewer drain. Upon remonitoring, EPA detected 1,400 ppm VOC. Think confirmed the reading at 2,300 ppm VOC. I collected a Summa Sample (canister 11612) from the drain (Photo 21). This was collected as an approximately 15-second grab sample. Mr. Cuti witnessed the sample collection. This sample contained 23.7 ppm benzene and 461 ppb ethylene oxide. [AOCs 7, 12, 24] At 12:10, we arrived at stormwater tank T-702. I asked Mr. Cuti about the tank's applicability and vapor pressure determinations. Mr. Cuti indicated he was unaware of any applicable regulations to the tank as it only stores stormwater. EPA inspectors climbed to the platform at the top of the stormwater tank. T702 is an external floating roof tank. EPA inspectors observed 26 hatches around the perimeter on the floating roof. I noted 7 hatches visibly open (Photos 22 and 23, Video 11). [AOC 15] Mr. Cuti was unable to confirm if the hatches were pontoon covers. 14 EPA Inspection Report - Page 15 of 170 EOB Control Room Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 At 14:05, EPA inspectors reconvened and arrived at the EOB control room. We met with Domingo Miller, Process Engineer; Eric Killian, Run Plant Engineer; and Lonnie Pitre, Environmental Operations Technical Advisor. Mr. Miller explained the wastewater treatment plant ("WWTP") operations. EOB receives process wastewater from all process units at the Facility and stormwater. Each process unit has process sewer sumps located within the process unit that are pumped and hard piped through wastewater headers to EOB. Union Carbide has five process wastewater headers: stainless steel, old carbon steel, new carbon steel, transite header, and EA2/3 sump. Each header has a TOC analyzer. Mr. Miller stated that if EOB is receiving high TOC material, EOB operators are unable to determine the origin of the material without calling individual process units that feed the header as the TOC analyzer is not located at the individual process units generating the wastewater. [AOC 16] All five headers merge at the D1 header before entering any treatment process at EOB. The D1 header feeds two open top stainless-steel pH tanks, North and South, for pH adjustment. The pH tanks lower pH with sulfuric acid or raise pH with caustic. At the time of inspection, the pH tanks were feeding caustic. From the pH tanks, wastewater is fed through the equalization ("EQ") sump tank and then the EQ tank. If the EQ tank is at a high level or a diversion is needed, wastewater can be diverted to the surge sump tank which feeds the surge tank. All fixed roof tanks (EQ, surge, surge sump tank, and EQ sump tank) share a common header that vent to a scrubber. From the EQ tank, the wastewater is gravity fed to the north and south aeration basins. From the aeration basins, the water goes to the secondary clarifiers, where the top is discharged to the river and the bottoms are recycled to the digesters. Union Carbide stated there is no temperature control regarding the material going into the digesters. At the time of inspection, the temperature of the feed going to the digesters was 47 degrees Celsius. Union Carbide stated the TOC concentration at the final outfall is between 80 and 100 ppm TOC. At the time of inspection, the analyzer at the inlet of the aeration basins was measuring between 1,700 and 2,600 ppm TOC. Union Carbide stated they conduct periodic grab samples at the outfall. Wastewater from the Olefins units is primarily pumped through the new carbon steel header with the ability to also use the old carbon steel header. Prior to the headers, Olefins 1 wastewater is collected in sump E-1, and Olefins 2 wastewater is collected in sump E-20. Environmental Operations Plant Field Observations At 15:00, the inspection team arrived at the wastewater treatment plant near the D1 header and the North and South pH adjustment tanks. Upon arriving at the pH tanks, I observed the top of the tanks and 15 EPA Inspection Report - Page 16 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 the splitter box on the North tank with the OGIC and observed hydrocarbon emissions (see Videos 13 and 18). [AOC 17] EPA inspectors requested access to the top of the pH tanks for monitoring and observation and were told that no one could climb the staircase to the pH tanks without self-contained breathing apparatuses ("SCBA"). I inquired about the decision to require SCBA at the pH tanks and Mr. Pitre and Mr. Cuti stated that SCBA is required due to potential exposure to benzene and ethylene oxide. Inspector Rosenthal inquired about the group status of waste streams entering the pH tanks. Mr. Killian stated that the wastewater treatment plant does not receive any Group 1 waste streams and any treatment required for compliance under Part 63 for Group 1 and Group 2 streams is completed at the individual process units generating the wastewater. [AOC 17, 19] Mr. Cuti stated group status has not been assessed for the comingled streams at the D1 header. After observing the pH tanks, the inspection team observed the grit chamber sump. According to Union Carbide, the grit chamber sump is the location where vacuum truck discharges are fed to the pH tanks. The grit chamber sump was observed open to atmosphere. While we were nearby, we observed a vacuum truck discharge directly into the sump (Video 15). Mr. Cuti was unsure of the contents of the vacuum truck but later determined that the truck was discharging domestic sewage. Mr. Cuti indicated that process waste collected in a vacuum truck would be discharged through a hose connection directly into the pH adjust tanks and would bypass the grit chamber. [AOC 26] At 15:20, the inspection team observed the EQ sump tank and surge sump tank. Inspectors Loukeris and Rosenthal climbed the ladders to the EQ sump tank and surge sump tank, respectively, to monitor with the FID. Prior to climbing the tanks, Mr. Killian asked the inspectors what components they would be monitoring and how long the monitoring would take. Inspectors Loukeris and Rosenthal indicated they would be monitoring around hatches and pressure relief devices. Mr. Killian urged the inspectors to monitor quickly. Inspector Loukeris noted strong odors on top of the EQ sump tank and detected 420 ppm VOC around the tank hatch. No emissions were detected from the pressure relief device. Inspector Rosenthal climbed the ladder to the top of the surge sump tank and immediately noted strong odors. He was only able to monitor the hatch briefly and detected 1,000 ppm VOC before halting monitoring to descend from the tank due to the odor. From the ground, I observed the surge sump tank with the OGIC and observed hydrocarbon emissions from the hatch. Inspector Rosenthal and I returned to the top of the surge sump tank wearing full-face respirators to continue monitoring. Inspector Rosenthal continued Method 21 monitoring along the hatch and detected over 500 ppm VOC around most of the hatch and then experienced an instrument flameout along the east side of the hatch. The east side of the hatch was observed by inspectors with a visible liquid leak and audible hissing leak (Photo 26 and Videos 16, 19, and 20). [AOC 18] Mr. Lyons climbed the surge sump tank to conduct monitoring with Think's FID and experienced a flameout approximately one foot away from the hatch. While Mr. Lyons was climbing down from the surge sump tank, Mr. Cuti asked him what a flameout meant. 16 EPA Inspection Report - Page 17 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 At 15:55, I collected a Summa Sample at the east side of the surge sump tank underneath the flange of the hatch (canister 16930). This was an approximately 25-second grab sample. Mr. Cuti witnessed the sample collection. This sample contained 143 ppm ethylene oxide. [AOC 19] Inspector Loukeris climbed the EQ tank to conduct monitoring and detected up to 2,700 ppm VOC at various locations on the tank. At 16:25, I collected a Summa Sample (canister 16927) along the east side of PSV-4701-30 (Photos 31 and 32). This was an approximately 20-second grab sample. This sample contained 6.59 ppm ethylene oxide. [AOCs 19, 20] Inspectors Nelson and Kuc climbed the surge tank to conduct monitoring and detected up to 2,000 ppm at various locations on the tank. EPA inspectors also noted visible defects on the seals of various pressure vacuum relief valves (Photos 27-30 and Video 21). [AOC 21] Inspector Kuc observed the UNox scrubber with the OGIC and observed hydrocarbon emissions from the stack (Video 17). [AOC 22] We arrived at the aeration basins at 16:30. Inspectors observed a visible haze over the basins. At 16:38, I collected a Summa Sample (canister 11610) between the north and south aeration basins at approximately the third bollard from the western side of the basins. Wind direction was from the north. At 16:56, I collected a Summa Sample (canister 16708) upwind of the aeration basins. The sample was collected north of the north aeration basin and south of equalization tank. Both Summa Samples near the aeration basins were each approximately 30-second grab samples. Before leaving the aeration basin area, EPA inspectors observed the ethylene oxide flare pulsing and with no visible flame. [AOC 23] This flare is located near the ethylene oxide storage tank area. We returned to the conference room at 17:10. Section III - AREAS OF CONCERN I conducted a closing conference at Union Carbide Corporation - St. Charles Operations at 17:20 on September 25, 2024, for the inspection. During the closing conference, I reviewed most of the Areas of Concern noted below. Additionally, AOCs marked with an asterisk were determined after the conclusion of the inspection and were not included in the closing conference. 1) Union Carbide may not be managing benzene waste in compliant waste management units. Union Carbide elects to follow the 2 Mg compliance option as described in 40 CFR 61.342(c), which requires either the management and treatment of all benzene-containing waste streams such that 99% of the benzene is removed or destroyed in the waste stream or the waste stream is treated such that the benzene concentration is less than 10 parts per million by weight ("ppmw"). Waste streams with benzene concentrations less than 10 ppmw are exempt from this control requirement, and Union 17 EPA Inspection Report - Page 18 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Carbide may exempt streams containing a total (cumulative) annual benzene quantity less than or equal to 2.0 Mg/yr. Union Carbide must manage each benzene-containing waste stream in waste management units complying with the applicable requirements in 40 CFR 61.343-61.347. Union Carbide sends benzenecontaining wastewater for storage in wastewater tanks owned and operated by Vopak. Union Carbide personnel indicated during the inspection that they do not communicate with Vopak regarding any environmental compliance. Union Carbide does not receive certifications from Vopak stating Vopak has managed the waste as required by the applicable standards for tanks in 40 CFR 61.343 or the alternative in 40 CFR 61.351. EPA inspectors also identified a letter from Vopak to LDEQ claiming that Vopak is not applicable to Subpart FF and a permit application removed Subpart FF applicability. In the Facility's TAB report from 2023, Union Carbide reported the #3 WWS feed and East & West WWS feeds as containing 26.956 Mg of benzene and 11.269 Mg of benzene, respectively. These feeds originate from the wastewater tanks at Vopak and Union Carbide reported those streams as controlled. Union Carbide may not be able to consider these streams controlled as Union Carbide does not certify the waste streams have been managed in compliant waste management units. Based on the 2023 TAB reported by Union Carbide, these streams accounted for 38.225 Mg of uncontrolled benzene. 2) Union Carbide may not have identified all waste management units at the Facility that receive or manage benzene-containing waste streams prior to and during treatment. According to 40 CFR 61.341, waste management unit "means a piece of equipment, structure, or transport mechanism used in handling, storage, treatment, or disposal of waste. Examples of a waste management unit include a tank, surface impoundment, container, oil-water separator, individual drain system, steam stripping unit, thin-film evaporation unit, waste incinerator, and landfill." Union Carbide has an integrated sewer system in which stormwater is collected and sent to skimmers. Oil in the skimmers is pumped back to the Olefins units and water is pumped to stormwater tank T-702. Union Carbide does not measure the concentration of benzene managed in the stormwater tank until the contents of the tank have been released. Union Carbide measures benzene in the effluent of the T702 by analyzer. T-702 can manage benzene-containing waste streams that may exceed 10 ppmw at the point of generation. Union Carbide currently does not consider T-702 applicable to Subpart FF. During the inspection, EPA requested quarterly inspection records required by Subpart FF, including WMUs. In response, Union Carbide provided quarterly closed vent system and control device records that identified the #3, East, and West WWSs as equipment inspected. Union Carbide's inspection records did not identify any other waste management unit. During the opening conference and throughout field observations in the Olefins units, EPA inspectors identified potential waste management units including, but not limited to, oil-water separators, decanters, individual drain systems, suction drums, and KO pots. These potential waste management 18 EPA Inspection Report - Page 19 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 units have not been identified by Union Carbide and are not being considered subject to the requirements under Subpart FF. 3) Union Carbide may not be conducting required inspections and monitoring of benzene waste management units. WMUs have inspection and monitoring requirements, which depend on the type of unit managing benzene waste. As identified in AOC 2, Union Carbide has not identified all waste management units at the Facility and has not provided inspection or monitoring records that indicate the Facility is completing the applicable inspection and monitoring requirements in 40 CFR 61.343-61.347. During the closing conference, Mr. Cuti told EPA inspectors that Union Carbide's LDAR database does not identify any components as subject to NDE testing for Subpart FF. Union Carbide may not be conducting any NDE testing of applicable equipment. 4) Union Carbide may not be able to perform effective visual inspections of various equipment that may be subject to BWON. EPA inspectors observed equipment in the Olefins 1 and 2 units that were not accessible. It is not possible to conduct visual inspections and make assessments of the condition of components without visual access. Inspectors noted inadequate access to components on the flare KO drums, the caustic tower knockout, the #3 WWS, an oil water separator, a decanter, and various blowdown drums. *5) The analyzer measuring the concentration of benzene in the DSG blowdown steam may not provide accurate measurements. Union Carbide explained that excess steam from the DSG can be sent to EOB if the benzene analyzer for the blowdown steam measures less than 475 ppm benzene. The steam generated is at high temperature which may affect the accuracy of the analyzer, biasing the benzene concentration low. Union Carbide may be diverting benzene containing wastewater from the DSG to EOB without treatment to the required standard. 6) Union Carbide may not be identifying and reporting all points of benzene waste generation and may not be identifying and reporting all points in the correct locations. 40 CFR 61.341 Definitions. "Point of waste generation means the location where the waste stream exits the process unit component or storage tank prior to handling or treatment in an operation that is not an integral part of the production process, or in the case of waste management units that generate new wastes after treatment, the location where the waste stream exits the waste management unit component." 19 EPA Inspection Report - Page 20 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 "Waste stream means the waste generated by a particular process unit, product tank, or waste management unit. The characteristics of the waste stream (e.g., flow rate, benzene concentration, water content) are determined at the point of waste generation. Examples of a waste stream include process wastewater, product tank drawdown, sludge and slop oil removed from waste management units, and landfill leachate." "Waste means any material resulting from industrial, commercial, mining or agricultural operations, or from community activities that is discarded or is being accumulated, stored, or physically, chemically, thermally, or biologically treated prior to being discarded, recycled, or discharged." 40 CFR 63.1082 "Dilution steam blowdown waste stream means any continuously flowing process wastewater stream resulting from the quench and compression of cracked gas (the cracking furnace effluent) at an ethylene production unit and is discharged from the unit. This stream typically includes the aqueous or oily-water stream that results from condensation of dilution steam (in the cracking furnace quench system), blowdown from dilution steam generation systems, and aqueous streams separated from the process between the cracking furnace and the cracked gas dehydrators. The dilution steam blowdown waste stream does not include blowdown that has not contacted HAP-containing process materials..." "Spent caustic waste stream means the continuously flowing process wastewater stream that results from the use of a caustic wash system in an ethylene production unit. A caustic wash system is commonly used at ethylene production units to remove acid gases and sulfur compounds from process streams, typically cracked gas..." Under 40 CFR 61.357, Union Carbide must annually report the total annual benzene quantity from facility waste. Through review of the processes in the Olefins units, PFDs, and on-site inspection observations, Union Carbide may not have identified all points of waste generation. In review of the Facility's TAB reports, the following are examples of waste streams reported in which the points of generation were reported in potentially incorrect locations: "Ol-1 & Ol-2 Process Sewers, Dist. A & B-sumps, Ol-2 DSG B/D & PWS Tails (also includes all quench oil sumps), Ole-1 PWS Tails & DSG B/D": Union Carbide explained this stream includes all benzene-containing waste from the Olefins 1 & 2 process sewers, the A & B sumps, the Olefins 1 and 2 DSG blowdown and process water stripper tails, and all quench oil sumps. Many individual points of generation may be contributing to this waste stream described in the TAB. Inspectors noted that the process sewers, the sumps, the blowdowns, and the process water stripper tails are not the point at which the waste exits the process unit component prior to handling or treatment that is not an integral part of the production process. During the inspection of the process units, inspectors observed multiple drain lines feeding the process sewer hubs. "East & West Waste Water Stripper Feed (including Ole-2 MEA & Caustic Sumps)": Union Carbide explained this stream as the wastewater that is routed to the East and West WWSs and the wastewater collected in the MEA and caustic sumps. The East and West WWSs are fed primarily and directly by streams from wastewater tanks 1311 and 1321. Tanks 1311 and 1321 store wastewater that is generated by the acid gas systems for the Olefins 1 and 2 units. This 20 EPA Inspection Report - Page 21 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 wastewater stream may include many individual POGs that exit process unit components prior to storage in the storage tanks and wastewater sumps and before treatment by the East and West WWSs. "#3 WWS Feed": Union Carbide explained this stream as the wastewater that is routed to the #3 WWS. The #3 WWS is fed primarily and directly from wastewater tanks 1301 and 1331. Tanks 1301 and 1331 receive and store wastewater from the majority of the Olefins units including all waste streams referenced in the first bullet point. This wastewater stream may include many individual POGs that exit process unit components prior to storage in the storage tanks and before treatment at the #3 WWS. The examples referenced above also indicate the points of generation may not have been reported in the correct location. The "Ol-1 & Ol-2 Process Sewers, Dist. A & B-sumps, Ol-2 DSG B/D & PWS Tails (also includes all quench oil sumps), Ole-1 PWS Tails & DSG B/D" is routed to the wastewater tanks for storage before feeding the #3 WWS. Union Carbide may have accounted for the wastewater multiple times by misidentifying the location of the point of generation. Many instances in which the point of generation reported may not have been in the correct location were identified on the TAB report and Union Carbide may have failed to identify and report a significant number of points of generation. This may include the complete and accurate identification and reporting of dilution steam blowdown waste streams and spent caustic waste streams. *7) Union Carbide may not have determined the total annual benzene quantity from the facility in accordance with 61.355. Inspectors reviewed and inspected processes, sampling results, PFDs, and TAB reports which may not reflect the total annual benzene quantity that the facility has determined. As discussed in previous AOCs, Union Carbide may not have identified the appropriate POGs or WMUs. In their TAB reports, Union Carbide relies on sampling data at points where multiple POGs have already combined. Under 40 CFR 61.355(b), Union Carbide shall determine the annual waste quantity at the point of waste generation and determine the flow-weighted annual average benzene concentration at the point of generation (40 CFR 61.355(c)(1)(i)). Union Carbide may not be able to determine the total annual benzene quantity from facility waste as prescribed by 61.355(a) because they may not have determined the annual waste quantity or the flow-weighted annual average benzene concentration at each point of generation. Union Carbide may not be able to report the actual total annual benzene quantity without determining the value in accordance with 61.355(a). During the inspection, Union Carbide indicated that the Facility has not reevaluated waste streams since the initial evaluation in the 1990s. The information required to be included in the TAB report should represent the waste stream characteristics based on current configuration and operating conditions (61.357(a)(4)). Union Carbide may not be reviewing the configuration and operating conditions to determine accurate TAB reports annually. In documentation provided by Union Carbide, the benzene concentration range for the streams from the Olefins 1 and 2 sewers, various sumps, the DSG blowdown, and process water stripper tails was reported based on the maximum concentration that can be sent to EOB. The maximum concentration 21 EPA Inspection Report - Page 22 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 used in the calculation for determining the annual benzene quantity is 0.475 ppm benzene which is the concentration measured after treatment in the WWSs. This is not representative of the concentration of benzene in the waste streams prior to treatment. These streams may be uncontrolled for benzene emissions prior to treatment. 8) Union Carbide may not be accurately reporting the control status for waste streams reported in their TAB reports. EPA inspectors observed Union Carbide's previous TAB reports with a column labeled, "Will Stream Be Controlled for Benzene?" Union Carbide explained that this column determines if the stream is required to be controlled based on the benzene concentration and the stream's contribution to the 2 Mg compliance option. This stream designation in the column does not reflect the actual management of the stream as the column designation is the determination for requiring control of the stream and not how the stream was managed in the reporting year. 9) EPA inspectors detected emissions above 1,000 ppm VOC at every monitored suction drum in Olefins 1. As described in the process description and the narrative, cracked gas from the furnaces go through five stages of compression, each with corresponding suction drums. EPA inspectors detected above 1,000 ppm VOC at the instrumentation such as regulators and pressure gauges and the lines feeding them at the following suction drums: FA-1476, FA-1477, FA-1478, and FA-1479. According to Union Carbide, the instrumentation monitored at FA-1476 and FA-1477 were methane blowback lines from the suction drums and the instrumentation monitored at FA-1478 and FA-1479 were ethylene blowback lines from the suction drums. Union Carbide and Think stated that the components EPA monitored on the suction drums are not monitored by the Facility. The emissions detected at the suction drums may result in excess emissions and indicate the components may not be operated and maintained as intended. 10) EPA inspectors observed a potential open-ended line in Olefins 1. While on the platform at the top of FA-1479, EPA inspectors observed a plug discharged or removed from a line north of the suction drum (Photo 8). Union Carbide was unable to identify the line during the inspection. The potential open-ended line may be acting as a bypass or releasing material to atmosphere. 11) EPA inspectors observed a drain line discharging directly onto the ground and not into a process sewer hub or catch basin. EPA inspectors observed a drain near condensate stripper DA-107 with two lines feeding it. One of the lines was feeding into the drain hub and the other was leading directly to the ground. Inspectors observed that the line feeding into the drain hub was not leaking but the line outside the drain hub was observed discharging directly on the ground. Union Carbide may not be capturing all process waste in the process sewer. 22 EPA Inspection Report - Page 23 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 12) Detectable emissions were observed from open process sewer drain hubs throughout the Olefins 1 and 2 units. EPA inspectors monitored open process sewer drains and detected emissions greater than 500 ppm in several locations (see Appendix 7). EPA also collected a Summa Sample from the process sewer drain at FA-1481. This Summa Sample (canister 11612) contained 23.7 ppm benzene, 461 ppb ethylene oxide, 7.47 ppm toulene, and other VOCs. As mentioned in other AOCs, Union Carbide may not be accurately identifying the total annual benzene from POGs, applying the applicable control requirements, and conducting applicable monitoring and inspections. In records provided by Union Carbide, wastewater characterizations from 1999 were used to calculate the annual average benzene concentration in the process water sewers. This information was used in the calculation of the 2023 TAB which claims the process water sewers contained less than 10 ppm benzene. The analytical results for the Summa Sample collected at the process sewer at FA-1481 suggests the 1999 data may not be accurate. The process sewer system observed on-site is an IDS and may not meet the standards required in 40 CFR 61.346. *13) EPA inspectors observed the Olefins 2 skimmer receiving a hot stream. EPA inspectors observed a stream discharged to the Olefins 2 skimmer accompanied by steam. Union Carbide may not be accounting for the volatilization of VOCs received at the Olefins skimmers. 14) EPA inspectors observed no monitoring tags or leak tags at components monitored with detectable emissions. EPA inspectors conducted Method 21 monitoring in the Olefins 1 and 2 units and EOB. Inspectors observed few monitoring tags on components with regulated material subject to Method 21 monitoring. Union Carbide's LDAR technicians did not place leak tags on any components observed with detectable emissions. On September 25, 2024, EPA inspectors returned to locations observed with detectable emissions on September 24, 2024. No monitoring or leak tags were observed in these locations and the components were monitored on September 25, 2024, and were observed with detectable emissions again. Union Carbide may not be recording instances of detectable emissions, maintaining records of each test of no detectable emissions or leaking components, and complying with repair timelines. The lack of monitoring tags suggests Union Carbide may not be conducting Method 21 at all required components. 23 EPA Inspection Report - Page 24 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 15) EPA Inspectors observed at least seven open covers/hatches on Tank T-702. Tank T-702 is an external floating roof tank used for stormwater storage. Inspectors observed the floating roof from the tank platform and identified at least seven openings on the tank roof. The openings observed suggest Union Carbide is not operating T-702 in conformance with the applicable design, operational and maintenance standards. *16) Union Carbide may not be able to effectively manage all process unit wastewater received at EOB. EOB receives wastewater generated by individual process units at the Facility and from off-site. Union Carbide explained that all process wastewater is routed to EOB through five wastewater headers that eventually comingle at one header named D1. Each of the five wastewater headers have TOC analyzers. Union Carbide explained that if a TOC analyzer spikes and wastewater must be diverted at EOB, Union Carbide is unable to immediately determine which process unit is causing the spike. EOB personnel must call each unit to ask if they have any issues with the process that may be affecting the wastewater in sumps leading to the wastewater header. This may not be an effective practice to identify potential exceedances and manage wastewater. 17) Union Carbide may not be sufficiently controlling or minimizing air emissions from any wastewater received at EOB. Union Carbide sends all wastewater received from the D1 header to two pH tanks prior to storage in fixed roof tanks. The pH tanks are open top stainless-steel tanks that vent directly to atmosphere. EPA inspectors observed hydrocarbon emissions from the pH tanks and the splitter boxes at the tanks. During the inspection, Union Carbide personnel stated no person could access the platform at the top of the pH tanks without SCBA. In records provided following the inspection, Union Carbide stated that personnel who need access to the walkways on top of the pH tanks need fresh air masks "due to the potential of abnormally high levels of some chemicals in the wastewater." 18) EPA inspectors detected emissions and observed hydrocarbon emissions from the surge sump tank. EPA inspectors monitored on the roof of the surge sump tank and detected emissions with the FID, observed emissions with the OGIC, heard an audible leak, and visibly saw material leaking from the tank hatch. EPA inspectors also noted strong odors. The nature of the observations suggests the facility may not be operating or maintaining the surge sump tank in accordance with operating and design standards. *19) EPA Inspectors collected Summa Samples at the surge sump tank and EQ tank that contained high concentrations of ethylene oxide and other HAPs. I collected a Summa Sample at the hatch on the surge sump tank on September 25, 2024. The analytical results indicated the sample contained 143 ppm ethylene oxide. 24 EPA Inspection Report - Page 25 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 I collected a Summa Sample at the hatch on the EQ tank on September 25, 2024. The analytical results indicated the sample contained 6.59 ppm ethylene oxide. Union Carbide collected Summa Samples at the surge sump tank and EQ tank on September 26, 2024, after EPA inspectors concluded the inspection. Union Carbide's chain of custody forms noted "TO-15 No EO" on the analysis required column. Union Carbide's analytical results did not include analysis for ethylene oxide. The concentration of ethylene oxide may be exceeding exposure threshold limits. The Recommended Exposure Limits ("REL") designated by the National Institute for Occupational Safety and Health ("NIOSH") and Permissible Exposure Limits ("PEL") designated by the Occupational Safety and Health Administration ("OSHA") for ethylene oxide are presented in Table 1 below. Table 1. Established exposure limits for ethylene oxide. NIOSH REL (ppm) Chemical 10-min Up to 10-hr 15-min Ceiling Ceiling TWA Ethylene Oxide 5 <0.1 5 OSHA PEL (ppm) 8-hr TWA 1 8-hr TWA action level 0.5 20) EPA Inspectors detected emissions at the EQ tank. EPA inspectors monitored components on the roof of the EQ tank and detected emissions at the tank hatch and pressure vacuum relief valves. The observations at the EQ tank suggest the tank may not be meeting applicable design, operational, and maintenance standards. 21) EPA Inspectors detected emissions at the surge tank. EPA inspectors monitored components on the roof of the surge tank and detected emissions at the tank hatch and pressure vacuum relief valves. The pressure vacuum relief valves were also observed with broken seals. The observations at the surge tank suggest the tank may not be meeting applicable design, operational, and maintenance standards. 22) EPA Inspectors observed hydrocarbon emissions from the UNox scrubber. EPA inspectors observed emissions from the UNox scrubber located at EOB with the OGIC. According to Union Carbide, this scrubber has not been performance tested and is the vent point for the common header shared by the EQ and Surge tanks. The scrubber may not be operating as designed. 25 EPA Inspection Report - Page 26 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 *23) EPA Inspectors observed the ethylene oxide flare pulsing and without a visible flame. While departing from EOB, EPA inspectors observed the ethylene oxide flare pulsing and without a visible flame for several minutes. This may indicate that the ethylene oxide flare may not be operating in accordance with the applicable requirements resulting in excess emissions. 24) Union Carbide may have exceeded the allowable 2 Mg uncontrolled benzene in facility waste streams with greater than 10 ppm benzene. As described in previous AOCs, Union Carbide may not have identified all POGs, determined the concentration of benzene at each POG, managed waste streams in compliant WMUs, or accurately determined the contribution of each waste stream to the facility's TAB. Union Carbide accounts for more than 2 Mg of benzene waste in wastewater storage tanks at Vopak and does not communicate with Vopak or receive certifications that Vopak is operating the storage tanks per the control requirements in Subpart FF. Union Carbide currently reports these waste streams as controlled but may need to consider them uncontrolled and count the TAB from the stream against the 2 Mg allowance. Union Carbide considers the process sewers and various sumps as POGs and has used the concentration of benzene in the wastewater at those locations to calculate their TAB. The concentration of benzene for each stream contributing to the process sewers and sumps has not been determined. Union Carbide may not be able to exempt all benzene waste streams contributing to the process sewers from the control requirements of Subpart FF because the concentration may not be less than 10 ppm benzene at the POG. Union Carbide samples of the process sewer are diluted downstream of the POGs and may not comply with the control requirements of Subpart FF. The process sewer system in the Olefins 1 and 2 units consist of drain hubs that are open to atmosphere. Any streams greater than 10 ppm benzene that are routed to the process sewer system may not be considered controlled. Union Carbide submitted an operating procedure document for SCO Olefins titled "Non Routine - Olefins 1 & 2 - Maintaining Compliance with Governmental Regulations Concerning Benzene in Wastewater" which included the statement, "Environmental regulations such as NESHAP FF and MACT state that waste water streams containing more than 10ppm Benzene must not be processed in an open air system." 25) Union Carbide may be underestimating the actual benzene quantity at the facility. Union Carbide is required to determine the total annual benzene quantity from facility waste by the test methods and procedures under 40 CFR 61.355. Based on the information provided by Union Carbide and interviews with Union Carbide personnel, the calculation of total annual benzene has not been calculated using the annual waste quantity at the POGs. Since Union Carbide has not identified all POGs, 26 EPA Inspection Report - Page 27 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 as noted by other AOCs, Union Carbide may not be accurately calculating the actual benzene quantity and accurately submitting reports required by 40 CFR 61.357. *26) Union Carbide does not maintain records of vacuum truck movements throughout the facility. EPA inspectors observed a vacuum truck discharging into the grit chamber sump at EOB during the inspection. Following the observation, EPA Inspectors requested vacuum truck movement logs identifying specific streams collected by each truck and the destination. Union Carbide stated the Facility does not maintain vacuum truck records but did provide EPA an excel spreadsheet identifying routine vacuum truck jobs. This spreadsheet identified situations in which vacuum trucks are used in specific areas of the Facility, including the Olefins units. The material collected in the Olefins units may contain benzene wastes and may be required to be managed appropriately. Vacuum truck wastes may be required to be reported in the TAB reports and records of location, disposal, control status, and benzene quantity would be necessary to calculate the waste stream contributions. Section IV - FOLLOW UP I requested records and information from the facility during and after the inspection (see Appendix 5). EPA received some of the requested records on September 24 and 25, and October 16, 18, and 30, 2024. Union Carbide did not provide all requested information including the ethylene oxide industrial hygiene data requested on September 23 and 24 while inspectors were on-site and again on September 30, 2024. On October 1, 2024, John Penland requested that UCC provide records documenting the hazardous waste determinations made for wastewaters treated in the wastewater strippers at the facility (See Appendix 10 for RCRA records requests). UCC began providing those records on October 17, 2024 and continues to maintain a dialog with the RCRA Enforcement Section concerning their review. These records will be used to determine the facility's compliance with 40 CFR 262.11. Section V - LIST OF APPENDICES Appendix 1 - Photo Log - 32 photos Appendix 2 - Video Log - 21 FLIR videos Appendix 3 - Opening Conference Sign-in Sheet Appendix 4 - TAB Reports Appendix 5 - Inspection Document Request Appendix 6 - FID Calibration Records Appendix 7 - FID Field Measurement Data Appendix 8 - Analytical Results of Summa Samples Collected by EPA on September 25, 2024 Appendix 9 - Analytical Results of Summa Samples Collected by Union Carbide on September 26, 2024 Appendix 10 - RCRA Records Request 27 EPA Inspection Report - Page 28 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 1 Photograph Log EPA Inspection Report - Page 29 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 1 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0001.jpg Date of Photo: 9/24/2024 Time of Photo: 10:53 Photographer: Karina Kuc Description: Decanter drain hub B2-35 from FA-119. EPA Inspection Report - Page 30 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 2 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0184.jpg Date of Photo: 9/24/2024 Time of Photo: 11:06 Photographer: Colleen McCarthy Description: Gauges and components monitored at suction drum FA-1477. EPA Inspection Report - Page 31 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 3 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0185.jpg Date of Photo: 9/24/2024 Time of Photo: 11:11 Photographer: Colleen McCarthy Description: Line feeding gauges at suction drum FA-1477. EPA Inspection Report - Page 32 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 4 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0186.jpg Date of Photo: 9/24/2024 Time of Photo: 11:11 Photographer: Colleen McCarthy Description: Incidental duplicate of FLIR0185.jpg. EPA Inspection Report - Page 33 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 5 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0187.jpg Date of Photo: 9/24/2024 Time of Photo: 11:36 Photographer: Colleen McCarthy Description: Open process sewer drain hub painted yellow under the Old Tar Pot. EPA Inspection Report - Page 34 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 6 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0188.jpg Date of Photo: 9/24/2024 Time of Photo: 11:41 Photographer: Colleen McCarthy Description: Overview of FA-1456. EPA Inspection Report - Page 35 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 7 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0189.jpg Date of Photo: 9/24/2024 Time of Photo: 11:45 Photographer: Colleen McCarthy Description: Process sewer cleanout located under the Tar Drum, FA-1462. Inspectors observed cleanout painted yellow and with opening in cover. EPA Inspection Report - Page 36 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 8 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0190.jpg Date of Photo: 9/24/2024 Time of Photo: 11:55 Photographer: Benjamin Rosenthal Description: Open-ended line observed from platform of suction drum, FA-1479. EPA Inspection Report - Page 37 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 9 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0191.jpg Date of Photo: 9/24/2024 Time of Photo: 11:57 Photographer: Benjamin Rosenthal Description: Gauges and components monitored on suction drum, FA-1479. EPA Inspection Report - Page 38 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 10 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0195.jpg Date of Photo: 9/24/2024 Time of Photo: 12:06 Photographer: Benjamin Rosenthal Description: Components and NSPS tags at suction drum FA-1479. EPA Inspection Report - Page 39 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 11 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0005.jpg Date of Photo: 9/24/2024 Time of Photo: 15:17 Photographer: Victoria Nelson Description: Olefins 1. Open process water sewer drain hub at base of decanter FA-1449. EPA Inspection Report - Page 40 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 12 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0006.jpg Date of Photo: 9/24/2024 Time of Photo: 15:18 Photographer: Victoria Nelson Description: Olefins 1. Open process water drain hub with three lines running into it at base of pump at quench tower DA-1445. EPA Inspection Report - Page 41 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 13 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0007.jpg Date of Photo: 9/24/2024 Time of Photo: 15:19 Photographer: Victoria Nelson Description: Olefins 1. Open drain hub at base of quench tower DA-1445. EPA Inspection Report - Page 42 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 14 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0008.jpg Date of Photo: 9/24/2024 Time of Photo: 15:28 Photographer: Victoria Nelson Description: Olefins 1 Flare. Drain line observed to open drain from flare KO FA-1490. EPA Inspection Report - Page 43 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 15 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0009.jpg Date of Photo: 9/24/2024 Time of Photo: 15:37 Photographer: Victoria Nelson Description: Olefins 2 skimmer. EPA Inspection Report - Page 44 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 16 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0010.jpg Date of Photo: 9/24/2024 Time of Photo: 15:39 Photographer: Victoria Nelson Description: Inlet to Olefins 2 skimmer. EPA Inspection Report - Page 45 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 17 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0012.jpg Date of Photo: 9/24/2024 Time of Photo: 16:03 Photographer: Victoria Nelson Description: Open process sewer drain hub with multiple lines feeding to it at GM-14585. EPA Inspection Report - Page 46 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 18 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0013.jpg Date of Photo: 9/24/2024 Time of Photo: 16:03 Photographer: Victoria Nelson Description: Open process sewer drain hub with multiple lines feeding to it at pump GA1458. EPA Inspection Report - Page 47 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 19 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0014.jpg Date of Photo: 9/24/2024 Time of Photo: 16:07 Photographer: Victoria Nelson Description: Incidental photo in Olefins 1. EPA Inspection Report - Page 48 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 20 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0016.jpg Date of Photo: 9/25/2024 Time of Photo: 10:57 Photographer: Benjamin Rosenthal Description: Olefins 1. Regulator at Old Tar Pot, FA-1446. The location of EPA's highest FID measurement and Summa Sample location is marked with pen on the regulator. Summa Sample 11606. EPA Inspection Report - Page 49 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 21 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0017.jpg Date of Photo: 9/25/2024 Time of Photo: 11:42 Photographer: Benjamin Rosenthal Description: Open process sewer drain hub with line from suction drum FA-1481. Summa Sample 11612. EPA Inspection Report - Page 50 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 22 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0018.jpg Date of Photo: 9/25/2024 Time of Photo: 12:12 Photographer: Colleen McCarthy Description: Tank 702. Open pontoon covers. EPA Inspection Report - Page 51 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 23 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0020.jpg Date of Photo: 9/25/2024 Time of Photo: 12:22 Photographer: Benjamin Rosenthal. Description: Tank 702. Open pontoon covers. EPA Inspection Report - Page 52 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 24 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0023.jpg Date of Photo: 9/25/2024 Time of Photo: 15:14 Photographer: Colleen McCarthy Description: Grit sump chamber. EPA Inspection Report - Page 53 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 25 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0024.jpg Date of Photo: 9/25/2024 Time of Photo: 15:27 Photographer: Colleen McCarthy Description: Surge Sump Tank 1401. EPA Inspection Report - Page 54 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 26 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0029.jpg Date of Photo: 9/25/2024 Time of Photo: 15:56 Photographer: Colleen McCarthy Description: Surge Sump Tank 1401. Visible leaks along east side of hatch. Summa sample 16930. EPA Inspection Report - Page 55 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 27 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0204.jpg Date of Photo: 9/25/2024 Time of Photo: 16:03 Photographer: Karina Kuc Description: Surge Tank 8301. PSV-4702-32 at center of roof on tank. Seal observed with defects. EPA Inspection Report - Page 56 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 28 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0205.jpg Date of Photo: 9/25/2024 Time of Photo: 16:03 Photographer: Karina Kuc Description: Surge Tank 8301. Bottom of PSV-4702-33 at center of tank roof. Seal and gasket observed with defects. EPA Inspection Report - Page 57 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 29 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0207.jpg Date of Photo: 9/25/2024 Time of Photo: 16:05 Photographer: Karina Kuc Description: Surge Tank 8301. Top seal and gasket of PSV04702-33 observed with defects. EPA Inspection Report - Page 58 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 30 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0208.jpg Date of Photo: 9/25/2024 Time of Photo: 16:12 Photographer: Karina Kuc Description: Surge Tank 8301. Varec manway. EPA Inspection Report - Page 59 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 31 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0030.jpg Date of Photo: 9/25/2024 Time of Photo: 16:25 Photographer: Colleen McCarthy Description: Equalization Tank 8302. East side of Varec manway. Summa Sample 16927. EPA Inspection Report - Page 60 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Photo No. 32 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Photo File Name: FLIR0031.jpg Date of Photo: 9/25/2024 Time of Photo: 16:26 Photographer: Colleen McCarthy Description: Equalization Tank 8302. Varec manway. EPA Inspection Report - Page 61 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 2 Video Log EPA Inspection Report - Page 62 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Video Log Appendix 2 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Video 1 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0002.mp4 9/24/2024 10:53 Karina Kuc Decanter FA-119 drain B2-35 Video 2 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0003.mp4 9/24/2024 10:57 Karina Kuc Drain south of FA-119 Video 3 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0004.mp4 9/24/2024 11:10 Karina Kuc Drain west of FA-119 Video 4 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0192.mp4 9/24/2024 12:05 Colleen McCarthy Incidental Video at FA-1479. Video 5 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR00193.mp4 9/24/2024 12:05 Colleen McCarthy Incidental Video at FA-1479. Page 1 of 5 EPA Inspection Report - Page 63 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Video Log Appendix 2 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Video 6 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0194.mp4 9/24/2024 12:05 Colleen McCarthy Incidental Video at FA-1479. Video 7 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0011.mp4 9/24/2024 15:39 Victoria Nelson Inlet stream to Olefins 2 skimmer observed with steam Video 8 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0015.mp4 9/25/2024 10:49 Benjamin Rosenthal Emissions observed from regulator at Old Tar Pot. Summa Sample 11606. Video 9 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0199.mp4 9/25/2024 11:01 Karina Kuc Incidental Video. Page 2 of 5 EPA Inspection Report - Page 64 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Video Log Appendix 2 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Video 10 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0200.mp4 9/25/2024 11:50 Karina Kuc Olefins 2 restricted steam/condensate area near FA 3203. Video 11 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0019.mp4 9/25/2024 12:22 Colleen McCarthy Floating roof observed with open hatch/pontoon covers on Tank 702. Video 12 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0201.mp4 9/25/2024 12:27 Karina Kuc Open drain hub observed near FA 3207 with visible steam. Video 13 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0021.mp4 9/25/2024 15:07 Colleen McCarthy North pH tank and north splitter box observed with emissions. Video 14 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0022.mp4 9/25/2024 15:14 Colleen McCarthy Incidental Video of Grit chamber Page 3 of 5 EPA Inspection Report - Page 65 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Video Log Appendix 2 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Video 15 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0202.mp4 9/25/2024 15:26 Karina Kuc Discharge of vacuum truck directly into grit chamber at EOB. Video 16 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0025.mp4 9/25/2024 15:27 Colleen McCarthy Surge Sump Tank 1401 hatch observed with emissions from the ground. Video 17 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0203.mp4 9/25/2024 15:29 Karina Kuc Vent stack of scrubber observed with emissions. Video 18 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0026.mp4 9/25/2024 15:35 Colleen McCarthy South pH tank and south splitter box observed with emissions. Video 19 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0027.mp4 9/25/2024 15:50 Colleen McCarthy Emissions observed from hatch on Surge Sump Tank 1401. Page 4 of 5 EPA Inspection Report - Page 66 of 170 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Video Log Appendix 2 Location: Union Carbide Corporation - St. Charles Operations City: Hahnville County/Parish: St. Charles State: Louisiana Video 20 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0028.mp4 9/25/2024 15:56 Colleen McCarthy Visible leaking of material from Surge Sump Tank 1401 hatch. Summa Sample 16930. Video 21 Video File Name: Date of Video: Time of Video: Videographer: Description: FLIR0206.mp4 9/25/2024 16:04 Karina Kuc PSV-4702-33 on Surge Tank 8301 observed with break in seal. Page 5 of 5 EPA Inspection Report - Page 67 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 3 Opening conference sign-in sheet EPA Inspection Report - Page 68 of 170 Agency Visit Attendance List Return to Agency Visit Protocol Purpose:_____ Date: 1,13) WZ- Agency Visit Attendance List Time: Z-jyv Location: Name Address Organization Title Telephone L EP qg - Agency Visit Attendance List F+' i i Fax E-mail address CIL 6P 4;;h- (2.- f4 __ jt.i C Pr DOL E4bi4( ;ve) Created 1/29/2015 / 'Tw-kJ'JioLs (;r47 VtJ Ltj$ /Vt - 4) o co DOW RESTRICTED 7 -S3f g 1 4is Let1evqrJ A-ta S?ta I.- OLFf 1Yec14r1co-f v-do.1. - /^ - - __________ CRC.u+ occv Page 1 of 1 EPA Inspection Report - Page 69 of 170 Agency Visit Attendance List Return to Agency Visit Protocol Purpose: Date: _____________ Agency Visit Attendance List Time: _____________ Location: Name \r'c \1 Address Cvccc ft. Organization us Title Telephone 2 Agency Visit Attendance List 1Ai / tjt /03 Fax - E-mail address tL O\o Tfl ' Qcc\ 35c\rQ.. '2 Th\ OJ.\AJ Ep - 1Sc1 LS S __________ (u5 k Lclffk _________ 5(C) ___________ E Te 4. ________ Oowci Created 1/29/2015 DOW RESTRICTED Page 1 of 1 EPA Inspection Report - Page 70 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 4 TAB Reports LDEQ-EDMSEPDAoIncsupmecetniotn1R4e2p3o5r2t 6- 9P,aPgeag71e 1 of o1f740 LDEQ-EDMSEPDAoIncsupmecetniotn1R4e2p3o5r2t 6- 9P,aPgeag72e 2 of o1f740 LDEQ-EDMSEPDAoIncsupmecetniotn1R4e2p3o5r2t 6- 9P,aPgeag73e 3 of o1f740 LDEQ-EDMSEPDAoIncsupmecetniotn1R4e2p3o5r2t 6- 9P,aPgeag74e 4 of o1f740 EPA Inspection Report - Page 75 of 170 Confidential Business Information Total Annual Benzene for 2023 - 40 CFR 61.357 (a)(2) 40 CFR 61.357 (a)(3)(ii) 40 CFR 61.357 (a)(3)(iii) 40 CFR 61.357 (a)(3)(iv) 40 CFR 61.357 (a)(3)(v) 40 CFR 61.357 (a)(3)(vi) 40 CFR 61.357 (a)(3)(1) 40 CFR 61.357 (a)(3)(1) Stream Description Ol-1 & Ol-2 Process Sewers, Dist. A & B-sumps, Ol-2 DSG B/D & PWS Tails (also includes all quench oil sumps), Ole-1 PWS Tails & DSG B/D East & West Waste Water Stripper Feed (including Ole-2 MEA & Caustic Sumps) #3 WWS Feed Benzene Leaked to Cooling Water Return Lateral Wastes Sent off-Site for Disposal (Includes Tank Truck Trailers of MEA Cycle Purge and oils collected out of sumps) Shell Ethane Pipeline Water Collection Tank Waste Water from North 1300 Area Tank Farm Sump Benzene in Oil Phase of Ol-1 Oily Sump * Benzene in Oil Phase of Ol-2 Quench Oil Sump Benzene in Oil Phase of Ol-1 Process Sewer Sump * Benzene in Oil Phase of Ol-2 Process Sewer Sump Benzene in Oil Phase of North 1300 Area Tank Farm Sump * Benzene in Oil Phase of Field Area ASump * Benzene in Oil Phase of Field Area BSump * Benzene in Oil Phase of Ol-2 MEA Sump * Benzene in Oil Phase of Ol-2 Caustic Sump * Benzene in Oil Phase of Ol-1 Quench Oil Filter Sump * Waste Water, LBs Avg. Benzene Conc., ppm Benzene Conc. Range, ppm 1,986,172,404.02 0.016 0 to 0.475 71,285,977.40 347.78 561,374,777.17 876,700,800,000 105.64 0.0001840 77 to 650 19 to 480 0.00 to 0.009 16680 0 6.80 137.56 868.38 4,056.17 0 0 0 820.76 703.51 4.125 0.00 0.00 0.02 2.03 34,029.00 0.56 0.00 0.00 0.00 125.11 242.24 0.010 0 to 0 0 0.01 to 0.04 0.001 to 4.9 57 to 87000 0.001 to 1.7 0 0 0 96 to 150 0.04 to 610 0.00 to 0.02 Benzene, LBs 32.57 24,791.68 59,303.01 161.34 1,512.52 0.00000 0 0.000000136 0.00028 29.55010 0.002271455 0 0 0 0.102685075 0.17041757 4.125E-08 Mega-Grams of Benzene Will Stream Be If No, Does Stream Contain > Controlled for Benzene? 10% Water? 0.015 No Yes 11.269 Yes 26.956 Yes 0.073 No 0.688 Yes 0.00000 No 0.00 No 0.00 No 0.0000001 No 1.34E-02 No 1.03E-06 No 0.00 No 0 No 0 No 4.6675E-05 No 7.74625E-05 No 1.875E-11 No Yes Yes Yes Yes *** Yes *** Yes *** Yes *** Yes *** Yes *** Yes *** Yes *** Yes *** Yes *** SCO Hydrocarbons Plant Total Annual Benzene 85,830.95 39.01 EPA Inspection Report - Page 76 of 170 EPA Inspection Report - Page 77 of 170 EPA Inspection Report - Page 78 of 170 EPA Inspection Report - Page 79 of 170 EPA Inspection Report - Page 80 of 170 Total Annual Benzene for 2022 - 40 CFR 61.357 (a)(2) 40 CFR 61.357 (a)(3)(ii) 40 CFR 61.357 (a)(3)(iii) 40 CFR 61.357 (a)(3)(iv) 40 CFR 61.357 (a)(3)(v) 40 CFR 61.357 (a)(3)(vi) 40 CFR 61.357 (a)(3)(1) 40 CFR 61.357 (a)(3)(1) Stream Description Waste Water, LBs Avg. Benzene Conc., ppm Benzene Conc. Range, ppm Benzene, LBs Mega-Grams of Benzene Will Stream Be If No, Does Stream Controlled for Benzene? Contain > 10% Water? Ol-1 & Ol-2 Process Sewers, Dist. A & B-sumps, Ol-2 DSG B/D & PWS Tails 1,986,382,873.61 0.057 0 to 0.475 114.14 0.052 No Yes (also includes all quench oil sumps), Ole-1 PWS Tails & DSG B/D East & West Waste Water Stripper Feed (including Ole-2 MEA & Caustic 128,093,390.63 416.67 77 to 650 53,372.25 24.260 Yes Sumps) #3 WWS Feed 1,019,569,049.88 129.03 19 to 480 131,552.73 59.797 Yes Benzene Leaked to Cooling Water 876,700,800,000 0.0001815 0.00 to 0.009 159.12 0.072 No Yes Return Lateral Wastes Sent off-Site for Disposal (Includes Tank Truck Trailers of MEA Cycle Purge and oils collected out of 187.29 0.085 Yes sumps) Shell Ethane Pipeline Water 16680 0.00 0 to 0 0.00000 0.00000 No Yes Collection Tank Waste Water from North 1300 Area 0 0.00 0 Tank Farm Sump 0 0.00 No Yes Benzene in Oil Phase of Ol-1 Oily 6.80 0.02 0.01 to 0.04 0.000000136 0.00 No Yes Sump Benzene in Oil Phase of Ol-2 Quench 137.56 2.03 0.001 to 4.9 0.00028 0.0000001 No Yes Oil Sump Benzene in Oil Phase of Ol-1 Process 868.38 34,029.00 57 to 87000 29.55010 1.34E-02 No Yes Sewer Sump Benzene in Oil Phase of Ol-2 Process 4,056.17 0.56 0.001 to 1.7 0.002271455 1.03E-06 No Yes Sewer Sump Benzene in Oil Phase of North 1300 0 0.00 0 Area Tank Farm Sump 0 0.00 No Yes Benzene in Oil Phase of Field Area A- 0 0.00 0 Sump 0 0 No Yes Benzene in Oil Phase of Field Area B- 0 0.00 0 Sump 0 0 No Yes Benzene in Oil Phase of Ol-2 MEA 820.76 125.11 96 to 150 0.102685075 4.6675E-05 No Yes Sump Benzene in Oil Phase of Ol-2 Caustic 703.51 242.24 0.04 to 610 0.17041757 7.74625E-05 No Yes Sump Benzene in Oil Phase of Ol-1 Quench 4.125 0.010 0.00 to 0.02 4.125E-08 1.875E-11 No Yes Oil Filter Sump SCO Hydrocarbons Plant Total Annual Benzene - 40 CFR 61.357 (a)(1) 185,415.35 84.28 EPA Inspection Report - Page 81 of 170 EPA Inspection Report - Page 82 of 170 EPA Inspection Report - Page 83 of 170 EPA Inspection Report - Page 84 of 170 Total Annual Benzene for 2021 - 40 CFR 61.357 (a)(2) 40 CFR 61.357 (a)(3)(ii) 40 CFR 61.357 (a)(3)(iii) 40 CFR 61.357 (a)(3)(iv) Stream Description Ol-1 & Ol-2 Process Sewers, Dist. A & B-sumps, Ol-2 DSG B/D & PWS Tails (also includes all quench oil sumps), Ole-1 PWS Tails & DSG B/D East & West Waste Water Stripper Feed (including Ole-2 MEA & Caustic Sumps) Waste Water, LBs 1,507,004,780.86 138,140,554.05 Avg. Benzene Conc., ppm 0.029 221.51 #3 WWS Feed Benzene Leaked to Cooling Water Return Lateral Wastes Sent off-Site for Disposal (Includes Tank Truck Trailers of MEA Cycle Purge and oils collected out of sumps) Shell Ethane Pipeline Water Collection Tank Waste Water from North 1300 Area Tank Farm Sump Benzene in Oil Phase of Ol-1 Oily Sump Benzene in Oil Phase of Ol-2 Quench Oil Sump Benzene in Oil Phase of Ol-1 Process Sewer Sump Benzene in Oil Phase of Ol-2 Process Sewer Sump Benzene in Oil Phase of North 1300 Area Tank Farm Sump Benzene in Oil Phase of Field Area ASump Benzene in Oil Phase of Field Area BSump Benzene in Oil Phase of Ol-2 MEA Sump Benzene in Oil Phase of Ol-2 Caustic Sump Benzene in Oil Phase of Ol-1 Quench Oil Filter Sump 1,185,018,256.80 876,700,800,000 99.17 0.0002065 16680 0 6.80 137.56 868.38 4,056.17 0 0 0 820.76 703.51 4.125 0.00 0.00 0.47 2,834.43 4.43 2.52 0.00 0.00 0.00 3.96 4.90 0.749 Benzene Conc. Range, ppm 0 to 0.475 77 to 650 19 to 480 0.00 to 0.009 0 to 0 0 0.01 to 0.04 0.001 to 4.9 57 to 87000 0.001 to 1.7 0 0 0 96 to 150 0.04 to 610 0.00 to 0.02 40 CFR 61.357 (a)(3)(v) Benzene, LBs 40 CFR 61.357 (a)(3)(vi) 40 CFR 61.357 (a)(3)(1) 40 CFR 61.357 (a)(3)(1) Mega-Grams of Benzene Will Stream Be Controlled for Benzene? If No, Does Stream Contain > 10% Water? 43.05 0.020 No Yes 30,599.51 13.909 Yes 117,518.26 53.417 Yes 181.00 0.082 No Yes 18.54 0.008 Yes 0.00000 0.00000 No Yes 0 0.00 No Yes 3.16874E-06 0.00 No Yes 0.38990 0.0001772 No Yes 0.00385 1.75E-06 No Yes 0.01020307 4.64E-06 No Yes 0 0.00 No Yes 0 0 No Yes 0 0 No Yes 0.003247016 1.47592E-06 No Yes 0.003449237 1.56783E-06 No Yes 3.08917E-06 1.40417E-09 No Yes SCO Hydrocarbons Plant Total Annual Benzene - 40 CFR 61.357 (a)(1) 148,360.78 67.44 EPA Inspection Report - Page 85 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 5 Inspection Document Requests EPA Inspection Report - Page 86 of 170 From: To: Cc: Subject: Date: Attachments: McCarthy, Colleen (she/her/hers) Cuti, Charles (CR) Nelson, Victoria (she/her/hers); Kuc, Karina (she/her/hers); Rosenthal, Benjamin; Allen, KaraM; Loukeris, Constantinos; Ong, Sophia; pspeyrer@dow.com; jwilliams48@dow.com; lmtillerygrant@dow.com RE: Union Carbide SCO: Inspection Document Request Monday, September 30, 2024 5:19:00 PM image001.png Good Afternoon Charles, Thank you again for your time and cooperation during the inspection last week. As promised, I am providing a list of requests discussed throughout the week in addition to what was requested in the initial email below. A few items were added to the request following the closing conference on September 25. Unless otherwise specified, we are requesting the last five years of data/records (October 1, 2019 to present). For continuous monitoring data (analyzer, temperature, flow, or other parametric data), please provide the data in an editable excel format. 1. BWON Manual/BWON training program; 2. Ethylene Oxide industrial hygiene data; 3. Industrial hygiene studies, MOC, and any determinations for requiring SCBA at the EOB pH tanks; 4. Process water sewer diagram identifying locations of all drains and sumps; 5. Location of the field water decanter; 6. All benzene and TOC analyzer specification sheets from the manufacturer(s); 7. Preventative maintenance for all benzene and TOC analyzers; 8. Benzene analyzer data for each benzene analyzer at the facility; 9. TOC analyzer data for each TOC analyzer at the facility; 10. Temperature data for material going to the digesters; 11. All monitoring data for bug activity/health at EOB; 12. Grab sample results for all internal outfalls and the final outfall at the wastewater treatment plant; 13. All monitoring data for the UNOX Vent Collection Scrubber (whatever parametric monitoring is conducted at the scrubber); 14. All UNOX Vent Collection Scrubber performance or emissions testing (if not available provide spec sheet or manufacturer's recommendations); 15. Vapor pressure determinations for Tank 702, Surge Tank, Surge Sump Tank, Equalization Tank, and Equalization Sump Tank; 16. Valve position and flow data from Tank 702 to EOB or wastewater tanks; 17. Records of vacuum truck movements throughout the facility including identification of specific streams in each truck and final destination; 18. Valve position for the process water stripper tails and corresponding benzene analysis results; 19. List of all NDE/Method 21 monitored components for Subpart FF - and repair records for detectable emissions and visual inspection deficiencies; 20. LDAR database .bak file; 21. Any follow-up action(s) taken by the company at locations with detectable emissions during the inspection (Olefins 1 suction drum gauges, old tar pot regulator (FA-1446), EQ Tank, Surge Tank, Surge Sump tank, etc). 22. Any updated NOCS submitted for the facility since May 15, 2023; and 23. Any permit applications submitted for the facility since May 15, 2023. Please do not hesitate to reach out if you have any questions, concerns, or need any further clarification. EPA is requesting this information be submitted by October 16, 2024. You can upload the requested information to the following OneDrive Folder: Union Carbide_SCO_September2024_Inspection. Sincerely, Colleen McCarthy EPA Inspection Report - Page 87 of 170 Air Toxics Enforcement Section U.S. Environmental Protection Agency, Region 6 1201 Elm Street, Suite #500 Dallas, Texas 75270 P: 214-665-7334 mccarthy.colleen01@epa.gov (she/her/hers) This email may contain material that is confidential, privileged and/or attorney work product and is for the sole use of the intended recipient. Any review, reliance, or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. From: McCarthy, Colleen (she/her/hers) Sent: Monday, September 23, 2024 7:12 PM To: Cuti, Charles (CR) <CRCuti@dow.com> Cc: Nelson, Victoria (she/her/hers) <nelson.victoria@epa.gov>; Kuc, Karina (she/her/hers) <Kuc.Karina@epa.gov>; Rosenthal, Benjamin <Rosenthal.Benjamin@epa.gov>; Allen, KaraM <Allen.Kara.M@epa.gov>; Loukeris, Constantinos <loukeris.constantinos@epa.gov>; Ong, Sophia <Ong.Sophia@epa.gov>; pspeyrer@dow.com; jwilliams48@dow.com; lmtillerygrant@dow.com Subject: Union Carbide SCO: Inspection Document Request Charles, As discussed today during the inspection, I am providing a list of follow-up documents. Please upload the requested records to this folder Union Carbide_SCO_September2024_Inspection 1. Subpart FF Quarterly Reports and all supporting documents; 2. Wastewater/Process Flow Diagrams (PFD) presented during today's meeting in the original excel format with all tabs included; 3. TAB workbook presented during today's meeting in the original excel format with all tabs included; 4. Screenshots of the Olefins Units (Olefins 1 and Olefins 2) DCS presented by Van during our meeting; 5. NDE monitoring data for the last five years; 6. Engineering Design Documentation for each waste management unit and treatment process required by 40 C.F.R. 61.356(d); 7. Quarterly visual inspection records for the last five years; 8. Dripolene data sheet; and 9. Blank visual inspection sheet/document used for Subpart FF visual inspections (several copies printed, if possible). Please let me know if any other individuals will need access to the OneDrive folder. Sincerely, EPA Inspection Report - Page 88 of 170 Colleen McCarthy Air Toxics Enforcement Section U.S. Environmental Protection Agency, Region 6 1201 Elm Street, Suite #500 Dallas, Texas 75270 P: 214-665-7334 mccarthy.colleen01@epa.gov (she/her/hers) This email may contain material that is confidential, privileged and/or attorney work product and is for the sole use of the intended recipient. Any review, reliance, or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. EPA Inspection Report - Page 89 of 170 From: To: Subject: Date: Cuti, Charles (CR) McCarthy, Colleen (she/her/hers) Re: Air Monitoring Wednesday, September 25, 2024 4:09:53 AM Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links. Thanks! Charles R Cuti Leveraged Air Specialist General Business From: McCarthy, Colleen (she/her/hers) <McCarthy.Colleen01@epa.gov> Sent: Tuesday, September 24, 2024 9:57:08 PM To: Cuti, Charles (CR) <CRCuti@dow.com> Subject: RE: Air Monitoring CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hi Charles, Apologies for not seeing this until now. The canisters will be analyzed using TO-15 (all compounds). Sincerely, Colleen McCarthy Air Toxics Enforcement Section U.S. Environmental Protection Agency, Region 6 1201 Elm Street, Suite #500 Dallas, Texas 75270 P: 214-665-7334 mccarthy.colleen01@epa.gov (she/her/hers) This email may contain material that is confidential, privileged and/or attorney work product and is for the sole use of the intended recipient. Any review, reliance, or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. General Business From: Cuti, Charles (CR) <CRCuti@dow.com> EPA Inspection Report - Page 90 of 170 Sent: Tuesday, September 24, 2024 7:25 PM To: McCarthy, Colleen (she/her/hers) <McCarthy.Colleen01@epa.gov> Subject: Air Monitoring Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links. Hi Colleen, For the canister monitoring tomorrow, will the analysis include all TO-15 hydrocarbons or just EO? We will plan to set up canisters for the same analysis. Charles R Cuti Leveraged Air Specialist General Business EPA Inspection Report - Page 91 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 6 FID Calibration Log EPA Inspection Report - Page 92 of 170 Calibration Gases Gas Type Zero Air 500 parts per million (ppm) methane 2,000 ppm methane 10,000 ppm methane Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Lot Number 269794 304-40231127-1 304-402415357-1 304-402244727-1 Expiration Date 09/2025 12/23/2025 04/20/2026 10/04/2025 TVA Bump Checks on September 24, 2024 Calibration Gas (ppm methane) 500 2,000 10,000 TVA B37055 500 2,051 10,500 TVA H2 495 1,999 10,000 TVA Bump Checks on September 25, 2024 Calibration Gas (ppm methane) 500 2,000 10,000 TVA B37055 496 2,115 10,600 TVA H2 498 1,990 10,100 TVA H3 497 2,001 10,100 TVA SL1555 497 1,997 10,000 TVA SL1555 495 2,095 10,100 EPA Inspection Report - Page 93 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 7 FID Field Measurement Data EPA Inspection Report - Page 94 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Table 1. September 24, 2024 Field Measurements Unit Area Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Olefins 1 Equipment/Location FA-1477. 3rd Stage Suction Drum. FA-1477. 3rd Stage Suction Drum. FA-1477. 3rd Stage Suction Drum. FA-1477. 3rd Stage Suction Drum. FA-1476. 2nd Stage Suction Drum. FA-1476. 2nd Stage Suction Drum. EPA Measurement in ppm VOC1 1,553 12,000 88,000 flameout. 4,050 10,700 2,100 FA-1476. 2nd Stage Suction Drum. DA-1463. East Process Water Stripper. FA-119. 1,100 2,200 850 Catch basin west of FA119. Drain south of FA-119. FA-1446. Old Tar Pot. FA-1446. Old Tar Pot. FA-1446. Old Tar Pot. FA-1446. Old Tar Pot. FA-1479. 5th Stage Suction Drum. 575 75 3,300 2,800 1,700 350 8,700 Facility Measurement in ppm VOC2 4,844 11,200 201,368 - flameout. 5,600 Inspector, Notes, and Observations Ong. Near LT-1477-2. Photos 2 and 3. Ong. At base of fork in lines to pressure gauges. Photos 2 and 3. Ong. At bolt along gauge lines. Photos 2 and 3. Ong. Near pressure gauge. - - - 30 - 6,000 5,000 - Nelson. Blowback regulator off pressure regulator. Mr. LeGaux observed reading. Nelson. At connector on LT- 1476-3 near NSPS tags 3Y56275 and 3Y56276. Mr. LeGaux observed reading. Nelson. Connector off blowback line valve. Mr. LeGaux observed reading. Nelson. Connector on sample line at second platform. Mr. LeGaux observed reading. Loukeris. Confirmed by Nelson at 1,390 ppm. Bottom decanter drain, B2-35. Observed with hose feeding drain. Photo 1. Video 1. Loukeris. Confirmed by Nelson at 550 ppm. Observed with four lines feeding drain. Video 3. Loukeris. Video 2. Loukeris. Near PCV-1446F-10. Loukeris. Near GA1911 plug. Loukeris. Connector near tag 3485493. Loukeris. Near tag 341004. Ong. Near Tag 3666 on LT1479F-3. Photos 9 and 10. EPA Inspection Report - Page 95 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Olefins 1 FA-1479. 5th Stage 2,705 - Ong. Near Tag 3665. Photos 9 Suction Drum. and 10. Olefins 1 FA-1478. 4th Stage 7,600 7,500 McCarthy. Along inlet to 3700 Suction Drum. on LT1478F-3. Olefins 1 FA-1478. 4th Stage 12,500 Flameout. McCarthy. At bolt connecting Suction Drum. line to pressure gauge. Olefins 1 FA-1478. 4th Stage 6,600 5,600 McCarthy. LT-1478F-02. Suction Drum. Olefins 1 FA-1478. 4th Stage 5,900 5,900 McCarthy. LT-1478F-1. Suction Drum. Olefins 1 FA-1478. 4th Stage 560 - McCarthy. Connector on LT- Suction Drum. 1478F-1. Olefins 1 FA-129R. Dryer Feed 180 - Kuc. Near chiller. Separator. Olefins 1 EA-1493. Cold Flare 5,000 13,000 Kuc. Bolt off pressure Vaporizer. transmitter on line above valve with tag R9093. Transmitter feed from Flare KO FA-1491. Olefins 1 FA-126. Caustic Tower 210 200 McCarthy. Accessed by caustic KO drum. tower scaffolding. Unlabeled valve along overheads piping. Olefins 1 Process sewer drain 1,800 1,416 Kuc. Process sewer observed near GA-1457. with three lines feeding it. No water seal observed. Olefins 1 Process sewer drain at 2,300 1,700 McCarthy. One line from FA- base of FA-1481. 1481 observed feeding drain. 1 Equipment: Thermo Scientific Toxic Vapor Analyzer 2020. EPA Region 6 ID Numbers: H2 and H3. EPA Region 5 ID Numbers: B37055 and SL1555. See Appendix 6 for EPA calibration data. 2 A "-" indicates the Facility was not available for or did not provide a confirmation reading. EPA Inspection Report - Page 96 of 170 Table 2. September 25, 2024 Field Measurements Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Unit Area Olefins 1 Olefins 1 Olefins 2 Olefins 2 Olefins 2 Olefins 2 Olefins 2 Olefins 2 EOB EOB EOB EOB Component FA-1446. Old Tar Pot. EPA Measurement in ppm VOC3 14,000 Process sewer drain at base of FA-1481. FA-3201. 1,400 400 FA-3202. 4,000 Process sewer cleanout. Process sewer drain 78. DA-3106. Process water stripper. Roll-off Box VB 27168. Grit Chamber Sump Equalization Sump Tank 1402. Surge Sump Tank 1401. 150 460 390 1,090 5 420 1,000 then flameout. Surge Tank 8301. 600 Facility Measurement in ppm VOC4 50,000 2,300 - - 80 295 1,000 - Inspector, Notes, and Observations Allen. Regulator on third platform. SN 14336121. Highest measurement along west side of regulator. Summa Sample 11606. Photo 20. Video 8. Allen. Summa Sample 11612. Photo 21. Nelson. Along valve stem 6545. UCC tightened bolts on valve stem. 4.8ppm measurement after repair attempt. Nelson. Open ended line under valve 6714. Visible signs of leak at plug and valve stem. Ong. Near FA-3902, dry KO drum. Ong. Next to process water stripper, DA-3106. Loukeris. Valve R1526 on second platform. Loukeris. Hatch on roll-off box. Nelson. Vacuum truck unloading. Video 15. Loukeris. Hatch. Noted odors. 1,040 then flameout. 987 Rosenthal. Hatch. Strong odor, visible and audible leak. Think Environmental flameout from approximately 1 foot away from hatch. Photos 25 and 26. Videos 16, 19, and 20. Summa Sample 16930. Nelson. Hatch. Strong odors and visible sign of leak. Photo 30. EPA Inspection Report - Page 97 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 EOB Surge Tank 8301. PSV- 1,034 1,145 Nelson. Along seal. Photo 27. 4702-32. EOB Surge Tank 8301. 1,500 1,502 Nelson. Along top seal. Photo PSV-4702-33. 29. Video 21. EOB Surge Tank 8301. 2,090 2,046 Nelson. Along lower seal. PSV-4702-33. Photo 28. EOB Equalization Tank 8302. 2,250 1,655 Loukeris. Visible material PSV-4701-31 leaking. EOB Equalization Tank 8302. 2,700 2,900 Loukeris. East side of hatch. PSV-4701-30 Summa Sample 16927. Photos 31 and 32. 3Equipment: Thermo Scientific Toxic Vapor Analyzer 2020. EPA Region 6 ID Number: H2. EPA Region 5 ID Numbers: B37055 and SL1555. See Appendix 6 for EPA calibration data. 4 A "-" indicates the Facility was not available for or did not provide a confirmation reading. EPA Inspection Report - Page 98 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 8 Analytical Results of Summa Samples Collected by EPA on September 25, 2024 EPA Inspection Report - Page 99 of 170 Eastern Research Group 601 Keystone Park Drive Suite 700 Morrisville, NC 27560 November 20, 2024 Shaun Burke TOCOR 2890 Woodbridge Avenue Edison, NJ 08837 Project Name: Region 6 CAA inspection Dear Shaun Burke, This report contains the analytical results for the sample(s) received under chain(s) of custody by Eastern Research Group on 09/30/24 09:52. Values below the MDL for QC results in this report are recorded as ND, however the actual values are reported in the accompanying Excel report with a "U" flag (Under the detection limit). The actual values are reported in AQS. This test is accredited under the 2016 TNI Standard for Environmental Laboratories (FL DOH Certification # E87673). All analyses were performed as described in the US EPA-approved QAPP, under the contract for National Hazardous Air Pollutant Support (US EPA Contract No. 68HERH22D0002). This cover page is an integral part of this report, and any exceptions or comments are noted on the last page. Release of the data contained in this data package and in the data submitted in the electronic data deliverable, has been authorized by the Program Manager, or the Program Manager's designee as verified by the following signature. The issuance of the final Certificate of Analysis takes precedence over any previous Report. If you have any questions, please contact me at Sincerely, Randolph Bower Deputy Program Manager The information contained in this report and its attachment(s) are intended only for the use of the individual to whom it is addressed and may contain information that is privileged, confidential, or exempt from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this report is strictly prohibited. If you have received this report in error, please notify and delete the report without retaining any copies. Page 1 of 23 EPA Inspection Report - Page 100 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection ANALYTICAL REPORT FOR SAMPLES SampleName OECA Region 6 CAA Inspect OECA Region 6 CAA Inspect OECA Region 6 CAA Inspect OECA Region 6 CAA Inspect OECA Region 6 CAA Inspect OECA Region 6 CAA Inspect LabNumber 4093026-01 4093026-02 4093026-03 4093026-04 4093026-05 4093026-06 Matrix Air Air Air Air Air Air Sampled 09/25/24 10:56 09/25/24 15:55 09/25/24 16:25 09/25/24 11:46 09/25/24 16:38 09/25/24 16:56 Received 09/30/24 09:52 09/30/24 09:52 09/30/24 09:52 09/30/24 09:52 09/30/24 09:52 09/30/24 09:52 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 23 EPA Inspection Report - Page 101 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-01 Pressure @ Receipt: Canister #: 11606 Comments: Olefins 1-Old Tar Pot (FA-1446) FID 25000 PPM Sampled: 09/25/24 10:56 Received: 09/30/24 09:52 Analyzed: 10/16/24 17:33 Analyte Dichlorodifluoromethane Chloromethane Dichlorotetrafluoroethane Vinyl chloride 1,3-Butadiene Ethylene oxide Bromomethane Chloroethane Acetonitrile Acrolein Trichlorofluoromethane Acrylonitrile 1,1-Dichloroethene Dichloromethane Carbon Disulfide Trichlorotrifluoroethane trans-1,2-Dichloroethylene 1,1-Dichloroethane Methyl tert-Butyl Ether Chloroprene cis-1,2-Dichloroethylene Bromochloromethane Chloroform Ethyl tert-Butyl Ether 1,2-Dichloroethane 1,1,1-Trichloroethane Benzene Carbon Tetrachloride tert-Amyl Methyl Ether 1,2-Dichloropropane Ethyl Acrylate Bromodichloromethane Trichloroethylene Methyl Methacrylate cis-1,3-Dichloropropene Methyl Isobutyl Ketone trans-1,3-Dichloropropene 1,1,2-Trichloroethane Toluene Dibromochloromethane Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv 0.922 1.47 ND ND 3970 ND ND ND ND 2.65 0.481 ND ND 4.82 0.239 0.138 ND ND ND ND ND ND ND ND 0.392 ND 597 ND ND ND ND ND 0.120 ND ND ND ND ND 102 ND 4.57 3.04 ND ND 8,800.00 ND ND ND ND 6.09 2.71 ND ND 16.80 0.75 1.06 ND ND ND ND ND ND ND ND 1.59 ND 1,910.00 ND ND ND ND ND 0.65 ND ND ND ND ND 385.00 ND D, XC D, XC D, XC, U D, XC, U D, XC, E CE, D, XC, U D, XC, U D, XC, U D, QB-03, XC, U D, QB-01, QB-03, XC, U D, XC D, XC, U D, XC, U D, QB-01, QB-03, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, U 0.255 0.409 0.222 0.216 111 1.07 0.438 0.573 1.39 3.48 0.400 0.489 0.666 0.986 1.65 0.885 0.410 0.598 0.426 0.518 0.552 0.381 0.565 0.376 0.489 0.401 51.1 0.316 0.531 0.906 0.329 0.375 0.287 1.39 0.317 2.44 0.346 0.169 1.60 0.373 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 23 EPA Inspection Report - Page 102 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-01 Pressure @ Receipt: Canister #: 11606 Comments: Olefins 1-Old Tar Pot (FA-1446) FID 25000 PPM Sampled: 09/25/24 10:56 Received: 09/30/24 09:52 Analyzed: 10/16/24 17:33 Analyte 1,2-Dibromoethane n-Octane Tetrachloroethylene Chlorobenzene Ethylbenzene m,p-Xylene Bromoform Styrene 1,1,2,2-Tetrachloroethane o-Xylene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene m-Dichlorobenzene p-Dichlorobenzene o-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachloro-1,3-butadiene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv ND 5.25 0.228 ND 8.31 9.14 ND 35.8 ND 3.82 0.426 1.16 ND ND ND ND ND ND 24.60 1.55 ND 36.20 39.80 ND 153.00 ND 16.60 2.10 5.71 ND ND ND ND ND D, XC, U D, XC D, XC, U D, XC, U D, XC D, XC D, XC, U D, XC, E D, XC, U D, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U 0.278 1.09 0.362 0.346 0.548 1.76 0.455 1.15 0.801 0.990 1.33 1.35 0.729 1.54 1.53 3.34 1.53 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 23 EPA Inspection Report - Page 103 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-02 Pressure @ Receipt: 24.5 Canister #: 16930 Comments: Surge Tamk Sump 1401 >10,000 PPM VOC Sampled: 09/25/24 15:55 Received: 09/30/24 09:52 Analyzed: 10/12/24 02:36 Analyte Dichlorodifluoromethane Chloromethane Dichlorotetrafluoroethane Vinyl chloride 1,3-Butadiene Ethylene oxide Bromomethane Chloroethane Acetonitrile Acrolein Trichlorofluoromethane Acrylonitrile 1,1-Dichloroethene Dichloromethane Carbon Disulfide Trichlorotrifluoroethane trans-1,2-Dichloroethylene 1,1-Dichloroethane Methyl tert-Butyl Ether Chloroprene cis-1,2-Dichloroethylene Bromochloromethane Chloroform Ethyl tert-Butyl Ether 1,2-Dichloroethane 1,1,1-Trichloroethane Benzene Carbon Tetrachloride tert-Amyl Methyl Ether 1,2-Dichloropropane Ethyl Acrylate Bromodichloromethane Trichloroethylene Methyl Methacrylate cis-1,3-Dichloropropene Methyl Isobutyl Ketone trans-1,3-Dichloropropene 1,1,2-Trichloroethane Toluene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv 10.8 53.50 ND ND ND ND ND ND 69.9 155.00 143000 258,000.00 ND ND ND ND 310 522.00 480 1,100.00 ND ND ND ND ND ND 49.2 171.00 4770 ND ND ND ND ND ND ND ND ND ND ND 445 ND ND ND 655 14.4 10.1 ND ND 28.7 ND ND 512 14,900.00 ND ND ND ND ND ND ND ND ND ND ND 1,420.00 ND ND ND 2,690.00 96.70 54.40 ND ND 118.00 ND ND 1,930.00 D, XC, U, E D, XC, U D, XC, U D, XC, U D, XC, U, E D, XC, E D, XC, U D, XC, U D, QB-03, XC, E D, QB-01, QB-03, XC, E D, XC, U D, XC, U D, XC, U D, QB-01, QB-03, XC, U, E D, XC, E D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, U D, XC, U D, XC, U D, XC, E D, XC, U, E D, XC, U D, XC, U D, XC, U D, XC, U, E D, XC, U D, XC, U D, XC, E 21.4 34.3 18.6 18.2 77.9 451 36.8 48.1 117 292 33.6 41.1 55.9 82.8 139 74.3 34.4 50.3 35.8 43.5 46.4 32.0 47.4 31.6 41.1 33.7 35.8 26.6 44.6 76.1 27.6 31.5 24.1 117 26.7 205 29.1 14.2 135 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 23 EPA Inspection Report - Page 104 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-02 Pressure @ Receipt: 24.5 Canister #: 16930 Comments: Surge Tamk Sump 1401 >10,000 PPM VOC Sampled: 09/25/24 15:55 Received: 09/30/24 09:52 Analyzed: 10/12/24 02:36 Analyte Dibromochloromethane 1,2-Dibromoethane n-Octane Tetrachloroethylene Chlorobenzene Ethylbenzene m,p-Xylene Bromoform Styrene 1,1,2,2-Tetrachloroethane o-Xylene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene m-Dichlorobenzene p-Dichlorobenzene o-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachloro-1,3-butadiene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv ND ND ND ND ND ND ND ND ND ND 566 2,460.00 477 2,080.00 ND ND 806 3,440.00 ND ND 182 792.00 58.5 288.00 190 936.00 ND ND ND ND ND ND ND ND ND ND D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, E D, XC, U D, XC, E D, XC, U D, XC, E D, XC, U, E D, XC, E D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U 31.3 23.4 91.3 30.4 29.0 46.0 148 38.2 96.6 67.3 83.2 112 113 61.2 130 129 280 129 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 23 EPA Inspection Report - Page 105 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Pressure @ Receipt: 25.0 Comments: EQ Tank, 2700 ppm VOC Lab ID: 4093026-03 Canister #: 16927 Sampled: 09/25/24 16:25 Received: 09/30/24 09:52 Analyzed: 10/16/24 19:34 Analyte Dichlorodifluoromethane Chloromethane Dichlorotetrafluoroethane Vinyl chloride 1,3-Butadiene Ethylene oxide Bromomethane Chloroethane Acetonitrile Acrolein Trichlorofluoromethane Acrylonitrile 1,1-Dichloroethene Dichloromethane Carbon Disulfide Trichlorotrifluoroethane trans-1,2-Dichloroethylene 1,1-Dichloroethane Methyl tert-Butyl Ether Chloroprene cis-1,2-Dichloroethylene Bromochloromethane Chloroform Ethyl tert-Butyl Ether 1,2-Dichloroethane 1,1,1-Trichloroethane Benzene Carbon Tetrachloride tert-Amyl Methyl Ether 1,2-Dichloropropane Ethyl Acrylate Bromodichloromethane Trichloroethylene Methyl Methacrylate cis-1,3-Dichloropropene Methyl Isobutyl Ketone trans-1,3-Dichloropropene 1,1,2-Trichloroethane Toluene Dibromochloromethane Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv 0.675 1.17 ND ND 2.01 6590 ND ND 11.2 3.35 2.42 ND ND 4.46 11,900.00 ND ND 18.80 7.64 17.60 0.797 ND ND 1.14 4.49 ND ND 3.97 159 0.0997 0.754 ND ND ND ND ND ND ND ND ND 18.2 0.112 ND ND 26.9 0.370 ND ND ND ND ND ND 23.9 ND 496.00 0.77 3.00 ND ND ND ND ND ND ND ND ND 58.30 0.71 ND ND 110.00 2.48 ND ND ND ND ND ND 90.30 ND D, XC D, XC D, XC, U D, XC, U D, XC D, XC, E D, XC, U D, XC, U D, QB-03, XC, E D, QB-01, QB-03, XC D, XC D, XC, U D, XC, U D, QB-01, QB-03, XC D, XC, E D, XC, U D, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U CE, D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, U D, XC, U D, XC, U D, XC, E D, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, U 0.198 0.318 0.172 0.168 0.721 100 0.341 0.446 1.08 2.71 0.311 0.380 0.518 0.767 1.28 0.688 0.319 0.465 0.331 0.403 0.429 0.297 0.439 0.293 0.380 0.312 0.331 0.246 0.413 0.705 0.256 0.291 0.223 1.08 0.247 1.89 0.269 0.131 1.25 0.290 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 23 EPA Inspection Report - Page 106 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Pressure @ Receipt: 25.0 Comments: EQ Tank, 2700 ppm VOC Lab ID: 4093026-03 Canister #: 16927 Sampled: 09/25/24 16:25 Received: 09/30/24 09:52 Analyzed: 10/16/24 19:34 Analyte 1,2-Dibromoethane n-Octane Tetrachloroethylene Chlorobenzene Ethylbenzene m,p-Xylene Bromoform Styrene 1,1,2,2-Tetrachloroethane o-Xylene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene m-Dichlorobenzene p-Dichlorobenzene o-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachloro-1,3-butadiene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv ND ND 0.312 ND 24.6 20.4 ND 38.1 ND 8.55 2.65 9.08 ND ND ND 0.0961 0.100 ND ND 2.12 ND 107.00 88.80 ND 163.00 ND 37.20 13.10 44.70 ND ND ND 0.72 1.07 D, XC, U D, XC, U D, XC D, XC, U D, XC, E D, XC D, XC, U D, XC, E D, XC, U D, XC D, XC D, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U 0.216 0.846 0.282 0.269 0.426 1.37 0.354 0.895 0.623 0.770 1.04 1.05 0.567 1.20 1.19 2.60 1.19 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 23 EPA Inspection Report - Page 107 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-04 Pressure @ Receipt: Canister #: 11612 Comments: FA 1481 process sewer, 1300 PPM Sampled: 09/25/24 11:46 Received: 09/30/24 09:52 Analyzed: 10/12/24 04:37 Analyte Dichlorodifluoromethane Chloromethane Dichlorotetrafluoroethane Vinyl chloride 1,3-Butadiene Ethylene oxide Bromomethane Chloroethane Acetonitrile Acrolein Trichlorofluoromethane Acrylonitrile 1,1-Dichloroethene Dichloromethane Carbon Disulfide Trichlorotrifluoroethane trans-1,2-Dichloroethylene 1,1-Dichloroethane Methyl tert-Butyl Ether Chloroprene cis-1,2-Dichloroethylene Bromochloromethane Chloroform Ethyl tert-Butyl Ether 1,2-Dichloroethane 1,1,1-Trichloroethane Benzene Carbon Tetrachloride tert-Amyl Methyl Ether 1,2-Dichloropropane Ethyl Acrylate Bromodichloromethane Trichloroethylene Methyl Methacrylate cis-1,3-Dichloropropene Methyl Isobutyl Ketone trans-1,3-Dichloropropene 1,1,2-Trichloroethane Toluene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv 14.9 ND ND ND 1350 461 ND ND ND 478 9.13 ND ND 58.9 73.80 ND ND ND 2,990.00 832.00 ND ND ND 1,100.00 51.40 ND ND 205.00 ND ND ND ND ND ND ND ND ND ND ND ND 23700 ND ND ND ND ND 14.5 ND ND ND ND ND 7470 ND ND ND ND ND ND ND ND ND ND ND ND 75,900.00 ND ND ND ND ND 78.10 ND ND ND ND ND 28,200.00 D, XC, U, E D, XC, U D, XC, U D, XC, U D, XC, E D, XC, E D, XC, U D, XC, U D, QB-03, XC, U D, QB-01, QB-03, XC, E D, XC, U D, XC, U D, XC, U D, QB-01, QB-03, XC, U, E D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U, E D, XC, U XC, D, U D, XC, U D, XC, U D, XC, U D, XC, E 23.8 38.2 20.7 20.2 86.5 100 40.9 53.5 130 325 37.4 45.6 62.1 92.0 154 82.6 38.2 55.8 39.7 48.4 51.5 35.6 52.7 35.1 45.6 37.4 39.7 29.5 49.6 84.6 30.7 35.0 26.7 130 29.6 227 32.3 15.7 149 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 23 EPA Inspection Report - Page 108 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-04 Pressure @ Receipt: Canister #: 11612 Comments: FA 1481 process sewer, 1300 PPM Sampled: 09/25/24 11:46 Received: 09/30/24 09:52 Analyzed: 10/12/24 04:37 Analyte Dibromochloromethane 1,2-Dibromoethane n-Octane Tetrachloroethylene Chlorobenzene Ethylbenzene m,p-Xylene Bromoform Styrene 1,1,2,2-Tetrachloroethane o-Xylene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene m-Dichlorobenzene p-Dichlorobenzene o-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachloro-1,3-butadiene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv ND ND ND ND ND 798 543 ND 3330 ND 262 ND 20.6 ND ND ND ND ND ND ND ND ND ND 3,470.00 2,360.00 ND 14,200.00 ND 1,140.00 ND 101.00 ND ND ND ND ND D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, E D, XC, E D, XC, U D, XC, E D, XC, U D, XC, E D, XC, U D, XC, U, E D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U 34.8 26.0 101 33.8 32.3 51.1 164 42.5 107 74.7 92.4 124 126 68.0 144 143 311 143 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 23 EPA Inspection Report - Page 109 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-05 Pressure @ Receipt: Canister #: 11610 Comments: North Aeration Basin, potential high VOC Sampled: 09/25/24 16:38 Received: 09/30/24 09:52 Analyzed: 10/16/24 21:35 Analyte Dichlorodifluoromethane Chloromethane Dichlorotetrafluoroethane Vinyl chloride 1,3-Butadiene Ethylene oxide Bromomethane Chloroethane Acetonitrile Acrolein Trichlorofluoromethane Acrylonitrile 1,1-Dichloroethene Dichloromethane Carbon Disulfide Trichlorotrifluoroethane trans-1,2-Dichloroethylene 1,1-Dichloroethane Methyl tert-Butyl Ether Chloroprene cis-1,2-Dichloroethylene Bromochloromethane Chloroform Ethyl tert-Butyl Ether 1,2-Dichloroethane 1,1,1-Trichloroethane Benzene Carbon Tetrachloride tert-Amyl Methyl Ether 1,2-Dichloropropane Ethyl Acrylate Bromodichloromethane Trichloroethylene Methyl Methacrylate cis-1,3-Dichloropropene Methyl Isobutyl Ketone trans-1,3-Dichloropropene 1,1,2-Trichloroethane Toluene Dibromochloromethane Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv 0.676 0.948 0.0282 ND 0.264 129 0.0255 ND 0.805 1.17 0.460 ND ND 0.570 4.33 0.0988 0.104 ND ND ND ND ND ND ND ND ND 1.70 0.0994 ND ND 0.849 0.0270 ND ND ND 0.0906 ND ND 2.25 ND 3.35 1.96 0.20 ND 0.59 233.00 0.10 ND 1.35 2.69 2.59 ND ND 1.98 13.50 0.76 0.41 ND ND ND ND ND ND ND ND ND 5.44 0.63 ND ND 3.48 0.18 ND ND ND 0.37 ND ND 8.50 ND D D D D, U D, LL, CF CF, D, LK, E D, U D, U D, QB-03 CF, D, LK, QB-01, QB-03 D D, U D, U D, QB-01, QB-03 CF, D, LK D, U D D, U D, U D, U D, U D, U CE, D, U D, U D, U D, U D D D, U D, U D D, U D, U D, U D, U D, U D, U D, U D D, U 0.0324 0.0520 0.0282 0.0275 0.118 0.684 0.0558 0.0730 0.177 0.443 0.0510 0.0622 0.0848 0.126 0.210 0.113 0.0521 0.0762 0.0542 0.0660 0.0703 0.0485 0.0719 0.0479 0.0622 0.0511 0.0542 0.0402 0.0676 0.115 0.0418 0.0477 0.0365 0.177 0.0404 0.310 0.0441 0.0215 0.204 0.0474 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 11 of 23 EPA Inspection Report - Page 110 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Lab ID: 4093026-05 Pressure @ Receipt: Canister #: 11610 Comments: North Aeration Basin, potential high VOC Sampled: 09/25/24 16:38 Received: 09/30/24 09:52 Analyzed: 10/16/24 21:35 Analyte 1,2-Dibromoethane n-Octane Tetrachloroethylene Chlorobenzene Ethylbenzene m,p-Xylene Bromoform Styrene 1,1,2,2-Tetrachloroethane o-Xylene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene m-Dichlorobenzene p-Dichlorobenzene o-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachloro-1,3-butadiene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv ND 0.339 0.105 ND 1.80 1.67 ND 3.79 ND 0.779 0.257 0.940 ND ND ND 0.00810 ND ND 1.59 0.71 ND 7.83 7.27 ND 16.20 ND 3.39 1.27 4.63 ND ND ND 0.06 ND D, U 0.0354 D 0.138 D 0.0461 D, U 0.0440 D 0.0697 D 0.224 D, U 0.0579 D 0.146 D, U 0.102 D 0.126 D 0.170 D 0.172 D, U 0.0928 D, U 0.196 D, U 0.195 D, U 0.425 D, U 0.195 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 12 of 23 EPA Inspection Report - Page 111 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Pressure @ Receipt: Comments: Upwind AB Lab ID: 4093026-06 Canister #: 16708 Sampled: 09/25/24 16:56 Received: 09/30/24 09:52 Analyzed: 10/16/24 23:36 Analyte Dichlorodifluoromethane Chloromethane Dichlorotetrafluoroethane Vinyl chloride 1,3-Butadiene Ethylene oxide Bromomethane Chloroethane Acetonitrile Acrolein Trichlorofluoromethane Acrylonitrile 1,1-Dichloroethene Dichloromethane Carbon Disulfide Trichlorotrifluoroethane trans-1,2-Dichloroethylene 1,1-Dichloroethane Methyl tert-Butyl Ether Chloroprene cis-1,2-Dichloroethylene Bromochloromethane Chloroform Ethyl tert-Butyl Ether 1,2-Dichloroethane 1,1,1-Trichloroethane Benzene Carbon Tetrachloride tert-Amyl Methyl Ether 1,2-Dichloropropane Ethyl Acrylate Bromodichloromethane Trichloroethylene Methyl Methacrylate cis-1,3-Dichloropropene Methyl Isobutyl Ketone trans-1,3-Dichloropropene 1,1,2-Trichloroethane Toluene Dibromochloromethane Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv 0.606 0.835 0.0240 ND 0.118 13.2 ND ND 0.466 0.520 0.266 ND ND 0.507 0.413 0.0950 ND ND ND ND ND ND ND ND 0.0425 ND 1.17 0.0874 ND ND ND ND ND ND ND ND ND ND 5.04 ND 3.00 1.73 0.17 ND 0.26 23.80 ND ND 0.78 1.19 1.50 ND ND 1.76 1.29 0.73 ND ND ND ND ND ND ND ND 0.17 ND 3.75 0.55 ND ND ND ND ND ND ND ND ND ND 19.00 ND D, XC D, XC D, XC D, XC, U D, XC D, XC, E D, XC, U D, XC, U D, QB-03, XC D, QB-01, QB-03, XC D, XC D, XC, U D, XC, U QB-03, XC, D, QB-01 D, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC D, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U D, XC D, XC, U 0.0274 0.0440 0.0239 0.0233 0.0998 0.116 0.0472 0.0617 0.150 0.375 0.0431 0.0526 0.0717 0.106 0.178 0.0953 0.0441 0.0644 0.0458 0.0558 0.0594 0.0411 0.0608 0.0405 0.0526 0.0432 0.0458 0.0340 0.0572 0.0976 0.0354 0.0403 0.0309 0.150 0.0342 0.262 0.0373 0.0182 0.172 0.0401 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 13 of 23 EPA Inspection Report - Page 112 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Description: OECA Region 6 CAA Inspection Pressure @ Receipt: Comments: Upwind AB Lab ID: 4093026-06 Canister #: 16708 Sampled: 09/25/24 16:56 Received: 09/30/24 09:52 Analyzed: 10/16/24 23:36 Analyte 1,2-Dibromoethane n-Octane Tetrachloroethylene Chlorobenzene Ethylbenzene m,p-Xylene Bromoform Styrene 1,1,2,2-Tetrachloroethane o-Xylene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene m-Dichlorobenzene p-Dichlorobenzene o-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachloro-1,3-butadiene Air Toxics by EPA Compendium Method TO-15 Results MDL ppbv ug/m Flag ppbv ND 0.689 0.0168 ND 0.952 5.69 ND 0.814 ND 2.42 0.905 2.20 ND ND ND ND ND ND 3.23 0.11 ND 4.14 24.80 ND 3.47 ND 10.50 4.46 10.80 ND ND ND ND ND D, XC, U D, XC D, XC, U D, XC, U D, XC D, XC D, XC, U D, XC D, XC, U D, XC D, XC D, XC D, XC, U D, XC, U D, XC, U D, XC, U D, XC, U 0.0300 0.117 0.0390 0.0372 0.0590 0.190 0.0490 0.124 0.0862 0.107 0.143 0.145 0.0785 0.166 0.165 0.359 0.165 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 14 of 23 EPA Inspection Report - Page 113 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Source Result Units Result RPD Air Toxics by EPA Compendium Method TO-15 - Quality Control Batch B4J2307 - Summa Canister Prep Blank (B4J2307-BLK1) Prepared & Analyzed: 10/11/24 Dichlorodifluoromethane ND ppbv Chloromethane ND ppbv Dichlorotetrafluoroethane ND ppbv Vinyl chloride ND ppbv 1,3-Butadiene ND ppbv Ethylene oxide ND ppbv Bromomethane ND ppbv Chloroethane ND ppbv Acetonitrile ND ppbv Acrolein ND ppbv Trichlorofluoromethane ND ppbv Acrylonitrile ND ppbv 1,1-Dichloroethene ND ppbv Dichloromethane ND ppbv Carbon Disulfide ND ppbv Trichlorotrifluoroethane ND ppbv trans-1,2-Dichloroethylene ND ppbv 1,1-Dichloroethane ND ppbv Methyl tert-Butyl Ether ND ppbv Chloroprene ND ppbv cis-1,2-Dichloroethylene ND ppbv Bromochloromethane ND ppbv Chloroform ND ppbv Ethyl tert-Butyl Ether ND ppbv 1,2-Dichloroethane ND ppbv 1,1,1-Trichloroethane ND ppbv Benzene ND ppbv Carbon Tetrachloride ND ppbv tert-Amyl Methyl Ether ND ppbv 1,2-Dichloropropane ND ppbv Ethyl Acrylate ND ppbv Bromodichloromethane ND ppbv Trichloroethylene ND ppbv Methyl Methacrylate ND ppbv cis-1,3-Dichloropropene ND ppbv Methyl Isobutyl Ketone ND ppbv trans-1,3-Dichloropropene ND ppbv RPD Limit Notes U U U U U U U U U QB-01, U U U U QB-01, U U U U U U U U U U U U U U U U U U U U U U U U Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 15 of 23 EPA Inspection Report - Page 114 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Source Result Units Result RPD Air Toxics by EPA Compendium Method TO-15 - Quality Control Batch B4J2307 - Summa Canister Prep Blank (B4J2307-BLK1) Continued Prepared & Analyzed: 10/11/24 1,1,2-Trichloroethane ND ppbv Toluene ND ppbv Dibromochloromethane ND ppbv 1,2-Dibromoethane ND ppbv n-Octane ND ppbv Tetrachloroethylene ND ppbv Chlorobenzene ND ppbv Ethylbenzene ND ppbv m,p-Xylene ND ppbv Bromoform ND ppbv Styrene ND ppbv 1,1,2,2-Tetrachloroethane ND ppbv o-Xylene ND ppbv 1,3,5-Trimethylbenzene ND ppbv 1,2,4-Trimethylbenzene ND ppbv m-Dichlorobenzene ND ppbv p-Dichlorobenzene ND ppbv o-Dichlorobenzene ND ppbv 1,2,4-Trichlorobenzene ND ppbv Hexachloro-1,3-butadiene ND ppbv RPD Limit Notes U U U U U U U U U U U U U U U U U U U U Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 16 of 23 EPA Inspection Report - Page 115 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Result Units % Difference Limit (%) Air Toxics by EPA Compendium Method TO-15 - Quality Control Sequence 2410045 Initial Cal Check (2410045-ICV1) Dichlorodifluoromethane 2.70 Prepared & Analyzed: 10/11/24 ppbv 1.2 30.00 Chloromethane 2.61 ppbv -1.5 30.00 Dichlorotetrafluoroethane 2.54 ppbv 2.2 30.00 Vinyl chloride 2.70 ppbv 1.1 30.00 1,3-Butadiene 2.64 ppbv 1.6 30.00 Ethylene oxide 2.29 ppbv -8.8 30.00 Bromomethane 2.69 ppbv -0.9 30.00 Chloroethane 2.74 ppbv 2.7 30.00 Acetonitrile 2.82 ppbv 4.6 30.00 Acrolein 2.46 ppbv -8.6 30.00 Trichlorofluoromethane 2.67 ppbv -3.9 30.00 Acrylonitrile 2.95 ppbv 3.1 30.00 1,1-Dichloroethene 2.91 ppbv 1.3 30.00 Dichloromethane 2.75 ppbv -5.0 30.00 Carbon Disulfide 2.89 ppbv 2.3 30.00 Trichlorotrifluoroethane 2.82 ppbv -0.6 30.00 trans-1,2-Dichloroethylene 2.87 ppbv 0.3 30.00 1,1-Dichloroethane 2.92 ppbv 2.1 30.00 Methyl tert-Butyl Ether 2.95 ppbv 4.4 30.00 cis-1,2-Dichloroethylene 2.81 ppbv -0.03 30.00 Bromochloromethane 2.80 ppbv -1.4 30.00 Chloroform 2.85 ppbv -1.8 30.00 Ethyl tert-Butyl Ether 2.89 ppbv 2.9 30.00 1,2-Dichloroethane 2.78 ppbv -2.3 30.00 1,1,1-Trichloroethane 2.71 ppbv -5.2 30.00 Benzene 2.79 ppbv -1.0 30.00 Carbon Tetrachloride 2.82 ppbv -1.9 30.00 tert-Amyl Methyl Ether 2.79 ppbv -2.4 30.00 1,2-Dichloropropane 2.85 ppbv -0.8 30.00 Ethyl Acrylate 3.00 ppbv 6.6 30.00 Bromodichloromethane 2.90 ppbv 1.1 30.00 Trichloroethylene 2.81 ppbv -1.4 30.00 Methyl Methacrylate 3.00 ppbv 5.7 30.00 cis-1,3-Dichloropropene 2.92 ppbv 11.1 30.00 Notes Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 17 of 23 EPA Inspection Report - Page 116 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Result Units % Difference Limit (%) Air Toxics by EPA Compendium Method TO-15 - Quality Control Sequence 2410045 Initial Cal Check (2410045-ICV1) Continued Methyl Isobutyl Ketone 2.94 Prepared & Analyzed: 10/11/24 ppbv 3.4 30.00 trans-1,3-Dichloropropene 2.96 ppbv 10.2 30.00 1,1,2-Trichloroethane 2.77 ppbv -0.8 30.00 Toluene 2.79 ppbv -2.1 30.00 Dibromochloromethane 2.87 ppbv 0.6 30.00 1,2-Dibromoethane 2.76 ppbv -1.7 30.00 n-Octane 2.86 ppbv 0.0 30.00 Tetrachloroethylene 2.82 ppbv -0.4 30.00 Chlorobenzene 2.82 ppbv -0.9 30.00 Ethylbenzene 2.78 ppbv -1.6 30.00 m,p-Xylene 2.92 ppbv -0.7 30.00 Bromoform 2.74 ppbv -1.5 30.00 Styrene 2.70 ppbv -6.3 30.00 1,1,2,2-Tetrachloroethane 2.79 ppbv -0.2 30.00 o-Xylene 2.81 ppbv 0.5 30.00 1,3,5-Trimethylbenzene 2.74 ppbv -2.8 30.00 1,2,4-Trimethylbenzene 2.67 ppbv -3.1 30.00 m-Dichlorobenzene 2.77 ppbv -2.8 30.00 p-Dichlorobenzene 2.77 ppbv 0.3 30.00 o-Dichlorobenzene 2.72 ppbv -1.3 30.00 1,2,4-Trichlorobenzene 2.58 ppbv -5.2 30.00 Hexachloro-1,3-butadiene 2.52 ppbv -9.3 30.00 Sequence 2410081 Calibration Check (2410081-CCV1) Dichlorodifluoromethane 2.70 Prepared & Analyzed: 10/11/24 ppbv 1.2 30.00 Chloromethane 2.61 ppbv -1.5 30.00 Dichlorotetrafluoroethane 2.54 ppbv 2.2 30.00 Vinyl chloride 2.70 ppbv 1.1 30.00 1,3-Butadiene 2.64 ppbv 1.6 30.00 Ethylene oxide 2.29 ppbv -8.8 30.00 Bromomethane 2.69 ppbv -0.9 30.00 Chloroethane 2.74 ppbv 2.7 30.00 Acetonitrile 2.82 ppbv 4.6 30.00 Acrolein 2.46 ppbv -8.6 30.00 Notes QB-01 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 18 of 23 EPA Inspection Report - Page 117 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Result Units % Difference Limit (%) Air Toxics by EPA Compendium Method TO-15 - Quality Control Sequence 2410081 Calibration Check (2410081-CCV1) Continued Trichlorofluoromethane 2.67 Prepared & Analyzed: 10/11/24 ppbv -3.9 30.00 Acrylonitrile 2.95 ppbv 3.1 30.00 1,1-Dichloroethene 2.91 ppbv 1.3 30.00 Dichloromethane 2.75 ppbv -5.0 30.00 Carbon Disulfide 2.89 ppbv 2.3 30.00 Trichlorotrifluoroethane 2.82 ppbv -0.6 30.00 trans-1,2-Dichloroethylene 2.87 ppbv 0.3 30.00 1,1-Dichloroethane 2.92 ppbv 2.1 30.00 Methyl tert-Butyl Ether 2.95 ppbv 4.4 30.00 cis-1,2-Dichloroethylene 2.81 ppbv -0.03 30.00 Bromochloromethane 2.80 ppbv -1.4 30.00 Chloroform 2.85 ppbv -1.8 30.00 Ethyl tert-Butyl Ether 2.89 ppbv 2.9 30.00 1,2-Dichloroethane 2.78 ppbv -2.3 30.00 1,1,1-Trichloroethane 2.71 ppbv -5.2 30.00 Benzene 2.79 ppbv -1.0 30.00 Carbon Tetrachloride 2.82 ppbv -1.9 30.00 tert-Amyl Methyl Ether 2.79 ppbv -2.4 30.00 1,2-Dichloropropane 2.85 ppbv -0.8 30.00 Ethyl Acrylate 3.00 ppbv 6.6 30.00 Bromodichloromethane 2.90 ppbv 1.1 30.00 Trichloroethylene 2.81 ppbv -1.4 30.00 Methyl Methacrylate 3.00 ppbv 5.7 30.00 cis-1,3-Dichloropropene 2.92 ppbv 11.1 30.00 Methyl Isobutyl Ketone 2.94 ppbv 3.4 30.00 trans-1,3-Dichloropropene 2.96 ppbv 10.2 30.00 1,1,2-Trichloroethane 2.77 ppbv -0.8 30.00 Toluene 2.79 ppbv -2.1 30.00 Dibromochloromethane 2.87 ppbv 0.6 30.00 1,2-Dibromoethane 2.76 ppbv -1.7 30.00 n-Octane 2.86 ppbv 0.0 30.00 Tetrachloroethylene 2.82 ppbv -0.4 30.00 Chlorobenzene 2.82 ppbv -0.9 30.00 Ethylbenzene 2.78 ppbv -1.6 30.00 Notes QB-01 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 19 of 23 EPA Inspection Report - Page 118 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Result Units % Difference Limit (%) Air Toxics by EPA Compendium Method TO-15 - Quality Control Sequence 2410081 Calibration Check (2410081-CCV1) Continued m,p-Xylene 2.92 Bromoform 2.74 Styrene 2.70 1,1,2,2-Tetrachloroethane 2.79 o-Xylene 2.81 1,3,5-Trimethylbenzene 2.74 1,2,4-Trimethylbenzene 2.67 m-Dichlorobenzene 2.77 p-Dichlorobenzene 2.77 o-Dichlorobenzene 2.72 1,2,4-Trichlorobenzene 2.58 Hexachloro-1,3-butadiene 2.52 ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv Prepared & Analyzed: 10/11/24 -0.7 30.00 -1.5 30.00 -6.3 30.00 -0.2 30.00 0.5 30.00 -2.8 30.00 -3.1 30.00 -2.8 30.00 0.3 30.00 -1.3 30.00 -5.2 30.00 -9.3 30.00 Calibration Check (2410081-CCV2) Dichlorodifluoromethane Chloromethane Dichlorotetrafluoroethane Vinyl chloride 1,3-Butadiene Ethylene oxide Bromomethane Chloroethane Acetonitrile Acrolein Trichlorofluoromethane Acrylonitrile 1,1-Dichloroethene Dichloromethane Carbon Disulfide Trichlorotrifluoroethane trans-1,2-Dichloroethylene 1,1-Dichloroethane Methyl tert-Butyl Ether Chloroprene cis-1,2-Dichloroethylene 1.06 1.04 1.07 1.07 1.09 0.825 1.06 1.07 1.14 1.05 1.04 1.18 1.08 1.11 1.12 1.03 1.04 1.04 1.04 1.07 1.03 ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv ppbv Prepared: 10/11/24 2.9 2.4 3.5 3.9 4.5 -13.7 2.7 3.2 9.3 2.9 0.04 5.9 3.5 7.2 2.3 -0.03 -0.3 0.04 0.6 2.3 -1.0 Analyzed: 10/12/24 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 Notes QB-01 QB-01 Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 20 of 23 EPA Inspection Report - Page 119 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Result Units % Difference Limit (%) Air Toxics by EPA Compendium Method TO-15 - Quality Control Sequence 2410081 Calibration Check (2410081-CCV2) Continued Bromochloromethane 1.01 Prepared: 10/11/24 ppbv -2.4 Chloroform 1.03 ppbv -2.0 Ethyl tert-Butyl Ether 0.996 ppbv -4.0 1,2-Dichloroethane 1.00 ppbv -3.4 1,1,1-Trichloroethane 1.02 ppbv -1.8 Benzene 1.04 ppbv -0.7 Carbon Tetrachloride 1.03 ppbv -1.3 tert-Amyl Methyl Ether 0.996 ppbv -4.1 1,2-Dichloropropane 1.05 ppbv 0.7 Ethyl Acrylate 1.05 ppbv 0.4 Bromodichloromethane 1.05 ppbv 1.0 Trichloroethylene 1.05 ppbv 0.8 Methyl Methacrylate 1.07 ppbv 2.1 cis-1,3-Dichloropropene 1.03 ppbv -2.1 Methyl Isobutyl Ketone 1.05 ppbv 0.4 trans-1,3-Dichloropropene 1.01 ppbv -4.1 1,1,2-Trichloroethane 1.05 ppbv 0.6 Toluene 1.14 ppbv 9.5 Dibromochloromethane 1.11 ppbv 6.4 1,2-Dibromoethane 1.13 ppbv 9.2 n-Octane 1.17 ppbv 12.5 Tetrachloroethylene 1.15 ppbv 10.0 Chlorobenzene 1.15 ppbv 10.4 Ethylbenzene 1.15 ppbv 11.0 m,p-Xylene 2.29 ppbv 10.4 Bromoform 1.12 ppbv 7.6 Styrene 1.18 ppbv 12.6 1,1,2,2-Tetrachloroethane 1.15 ppbv 10.3 o-Xylene 1.16 ppbv 11.1 1,3,5-Trimethylbenzene 1.18 ppbv 12.6 1,2,4-Trimethylbenzene 1.18 ppbv 12.7 m-Dichlorobenzene 1.16 ppbv 11.6 p-Dichlorobenzene 1.16 ppbv 10.8 o-Dichlorobenzene 1.17 ppbv 11.5 Analyzed: 10/12/24 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 Notes Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 21 of 23 EPA Inspection Report - Page 120 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection Analyte Result Units % Difference Limit (%) Air Toxics by EPA Compendium Method TO-15 - Quality Control Sequence 2410081 Calibration Check (2410081-CCV2) Continued 1,2,4-Trichlorobenzene 1.21 ppbv Prepared: 10/11/24 12.4 Hexachloro-1,3-butadiene 1.23 ppbv 13.8 Analyzed: 10/12/24 30.00 30.00 Notes Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 22 of 23 EPA Inspection Report - Page 121 of 170 CERTIFICATE OF ANALYSIS OECA 2890 Woodbridge Avenue Edison, NJ 08837 ATTN: Shaun Burke PHONE: (202) 564-1039 FAX: (732) 321-6616 FILE #: 0453.32.001.120 REPORTED: 11/20/24 13:47 SUBMITTED: 09/30/24 AQS SITE CODE: SITE CODE: Region 6 CAA inspection XC U QB-03 QB-01 LL LK E D CF CE ND NR MDL RPD Notes and Definitions Canister certification expired. Under Detection Limit Analyte exceeds sampling media lot blank criteria. Analyte exceeds method blank criteria Analyte identified; Reported value may be biased low. Analyte identified; Reported value may be biased high. The concentration for this analyte is an estimated value above the calibration range of the instrument. This result obtained by dilution. Canister bias: NATTS/UATMP data for compounds that have failed certification for the canister Not reportable due to a co-eluting compound. Analyte NOT DETECTED Not Reported Method Detection Limit Relative Percent Difference Note: This test is accredited under the 2016 TNI Standard; however the following analytes are not accredited: acetylene, bromodichloroethane, dichlorotetrafluoromethane, ethyl tert butyl ether, n-octane, tert amyl methyl ether, trichlorofluoroethane, and bromochloromethane. Eastern Research Group The results in this report apply only to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 23 of 23 EPA Inspection Report - Page 122 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 9 Analytical Results of Summa Samples Collected by Union Carbide on September 26, 2024 EPA Inspection Report - Page 123 of 170 Dow Chemical Company East End Building 715 E. Main Street Midland, Michigan 48674 Dole SCO - St. Charles, LA Client Project # PROJ-046250 Analytical Report (0924-208) EPA Method TO-15 Analysis TO-15 Target Compound List Enthalpy Analytical, LLC Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com 800-1 Capitola Drive Durham, NC 27713-4385 EPA Inspection Report - Page 124 of 170 I certify that to the best of my knowledge all analytical data presented in this report: Have been checked for completeness Are accurate, error-free, and legible Have been conducted in accordance with approved protocol, and that all deviations and analytical problems are summarized in the appropriate narrative(s) This analytical report was prepared in Portable Document Format (.PDF). This report shall not be reproduced except in full without approval of the laboratory. This will provide assurance that parts of a report are not taken out of context. Report Issued: 10/17/24 EA Job# 0924-208 Page 2 of 44 EPA Inspection Report - Page 125 of 170 Results EA Job# 0924-208 Page 3 of 44 EPA Inspection Report - Page 126 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #1 South of North Pond 0924-208; 500mL load; Can #C78284 2024-09-27 10:15 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404420.D 1.000 1.748 2024-10-03 18:00 TO15_SCNV6.M Air TDD Xavier 0924-208.#1 South of North Pond.Can Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Concentration (ppbv) 2.31 0.488 ND 1.05 ND 0.456 ND ND ND 0.225 1.14 0.257 0.0659 ND 3.82 0.0622 1.03 ND 0.276 0.115 ND ND ND 0.449 ND ND ND 0.226 1.43 0.0619 RL (ppbv) 0.0675 0.0684 0.701 0.0691 0.0698 0.0680 0.0686 0.0710 0.0684 0.0738 0.0693 0.0689 0.0710 0.0703 0.0701 0.0697 0.0697 0.0755 0.0697 0.0716 0.0713 0.0719 0.0712 0.0710 0.0694 0.0715 0.0706 0.0723 0.0698 0.0701 MDL (ppbv) 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0693 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 Concentration (ug/m) 3.97 2.41 ND 2.16 ND 1.01 ND ND ND 1.26 2.14 0.588 0.505 ND 9.06 0.193 2.52 ND 0.464 0.399 ND ND ND 1.58 ND ND ND 0.667 5.15 0.302 RL (ug/m) 0.116 0.338 4.89 0.143 0.178 0.150 0.266 0.187 0.299 0.414 0.130 0.158 0.544 0.279 0.166 0.217 0.171 0.236 0.117 0.249 0.283 0.259 0.154 0.250 0.281 0.252 0.280 0.213 0.251 0.342 EA Job# 0924-208 Page 4 of 44 MDL (ug/m) 0.105 0.302 0.427 0.126 0.156 0.135 0.237 0.161 0.267 0.344 0.130 0.140 0.469 0.242 0.145 0.190 0.150 0.191 0.103 0.212 0.242 0.220 0.133 0.216 0.247 0.215 0.242 0.180 0.220 0.299 Flags m m m J, m J, m m m m m m J EPA Inspection Report - Page 127 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #1 South of North Pond 0924-208; 500mL load; Can #C78284 2024-09-27 10:15 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404420.D 1.000 1.748 2024-10-03 18:00 TO15_SCNV6.M Air TDD Xavier 0924-208.#1 South of North Pond.Can Target Compound Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane Concentration (ppbv) 0.0819 ND 0.231 0.0743 2.09 ND 0.0641 0.393 ND ND ND 6.14 ND ND ND 0.327 ND ND ND ND ND ND ND ND ND 0.0676 ND ND ND ND RL (ppbv) 0.0708 0.0706 0.0717 0.0704 0.0703 0.0723 0.0719 0.0708 0.0707 0.0704 0.0732 0.0701 0.0706 0.0694 0.0726 0.0712 0.0722 0.0711 0.0715 0.0715 0.0705 0.0715 0.0720 0.0694 0.0705 0.0709 0.0701 0.0685 0.0701 0.0707 MDL (ppbv) 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 Concentration (ug/m) 0.242 ND 0.796 0.467 6.68 ND 0.259 1.61 ND ND ND 22.1 ND ND ND 1.23 ND ND ND ND ND ND ND ND ND 0.293 ND ND ND ND RL (ug/m) 0.209 0.385 0.247 0.443 0.225 0.338 0.291 0.290 0.380 0.325 0.300 0.253 0.473 0.315 0.297 0.268 0.327 0.388 0.485 0.293 0.600 0.549 0.331 0.301 0.484 0.308 0.304 0.292 0.724 0.485 EA Job# 0924-208 Page 5 of 44 MDL (ug/m) 0.180 0.334 0.210 0.385 0.195 0.286 0.247 0.251 0.329 0.283 0.250 0.220 0.410 0.277 0.250 0.230 0.277 0.334 0.415 0.250 0.521 0.470 0.281 0.265 0.420 0.265 0.265 0.260 0.632 0.420 Flags m m m m J J EPA Inspection Report - Page 128 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #1 South of North Pond 0924-208; 500mL load; Can #C78284 2024-09-27 10:15 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404420.D 1.000 1.748 2024-10-03 18:00 TO15_SCNV6.M Air TDD Xavier 0924-208.#1 South of North Pond.Can Target Compound 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Concentration (ppbv) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND RL (ppbv) 0.0711 0.0705 0.0709 0.0700 0.0710 0.0703 0.0703 0.0708 0.0696 0.0691 0.0704 0.0694 0.0690 0.0720 0.0710 0.0717 MDL (ppbv) 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 Concentration (ug/m) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND RL (ug/m) 0.349 0.365 0.348 0.344 0.427 0.422 0.364 0.426 0.516 0.736 0.369 0.349 0.317 0.336 0.349 0.352 MDL (ug/m) 0.301 0.317 0.301 0.301 0.368 0.368 0.317 0.368 0.454 0.652 0.321 0.308 0.281 0.286 0.301 0.301 Flags Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 857,070 3,144,420 2,535,544 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass, m pass pass EA Job# 0924-208 Page 6 of 44 EPA Inspection Report - Page 129 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #2 North of North Pond 0924-208; 500mL load; Can #C78012 2024-09-27 08:30 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404422.D 1.000 1.777 2024-10-03 19:50 TO15_SCNV6.M Air TDD Xavier 0924-208.#2 North of North Pond.Can Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Concentration (ppbv) 2.75 0.470 ND 1.41 ND 0.346 ND ND ND 0.231 1.33 0.200 0.0662 ND 5.36 ND 0.720 ND 0.333 0.113 ND ND ND 0.485 ND ND ND 0.297 1.37 ND RL (ppbv) 0.0686 0.0696 0.712 0.0703 0.0710 0.0691 0.0697 0.0722 0.0695 0.0750 0.0704 0.0700 0.0721 0.0715 0.0712 0.0709 0.0709 0.0768 0.0709 0.0728 0.0725 0.0731 0.0723 0.0722 0.0706 0.0727 0.0718 0.0735 0.0709 0.0713 MDL (ppbv) 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0704 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 Concentration (ug/m) 4.73 2.32 ND 2.90 ND 0.766 ND ND ND 1.30 2.50 0.458 0.507 ND 12.7 ND 1.77 ND 0.558 0.393 ND ND ND 1.71 ND ND ND 0.877 4.94 ND RL (ug/m) 0.118 0.344 4.97 0.145 0.181 0.153 0.271 0.190 0.304 0.421 0.133 0.160 0.552 0.283 0.169 0.221 0.174 0.240 0.119 0.253 0.287 0.263 0.157 0.254 0.285 0.256 0.284 0.217 0.255 0.348 EA Job# 0924-208 Page 7 of 44 MDL (ug/m) 0.107 0.307 0.434 0.128 0.159 0.137 0.241 0.164 0.272 0.349 0.133 0.142 0.476 0.246 0.148 0.194 0.153 0.194 0.104 0.216 0.246 0.224 0.135 0.219 0.252 0.219 0.246 0.183 0.224 0.303 Flags m J, m m m m m EPA Inspection Report - Page 130 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #2 North of North Pond 0924-208; 500mL load; Can #C78012 2024-09-27 08:30 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404422.D 1.000 1.777 2024-10-03 19:50 TO15_SCNV6.M Air TDD Xavier 0924-208.#2 North of North Pond.Can Target Compound Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane Concentration (ppbv) 0.0818 ND 0.235 0.0785 1.32 ND 0.0722 0.405 ND ND ND 0.886 ND ND ND 0.286 ND ND ND ND ND ND ND ND ND 0.0829 ND ND ND ND RL (ppbv) 0.0719 0.0718 0.0728 0.0716 0.0715 0.0735 0.0731 0.0720 0.0718 0.0716 0.0744 0.0713 0.0718 0.0706 0.0738 0.0723 0.0733 0.0723 0.0727 0.0727 0.0716 0.0727 0.0732 0.0706 0.0716 0.0721 0.0712 0.0696 0.0713 0.0718 MDL (ppbv) 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 Concentration (ug/m) 0.241 ND 0.809 0.493 4.22 ND 0.292 1.66 ND ND ND 3.19 ND ND ND 1.08 ND ND ND ND ND ND ND ND ND 0.360 ND ND ND ND RL (ug/m) 0.212 0.391 0.251 0.450 0.228 0.343 0.296 0.295 0.386 0.331 0.304 0.257 0.481 0.320 0.302 0.272 0.333 0.394 0.493 0.298 0.610 0.558 0.337 0.306 0.491 0.313 0.309 0.296 0.736 0.493 EA Job# 0924-208 Page 8 of 44 MDL (ug/m) 0.183 0.339 0.214 0.391 0.199 0.290 0.252 0.255 0.334 0.287 0.254 0.224 0.416 0.282 0.255 0.234 0.282 0.339 0.421 0.255 0.529 0.477 0.286 0.270 0.427 0.270 0.270 0.265 0.642 0.427 Flags m m J m EPA Inspection Report - Page 131 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #2 North of North Pond 0924-208; 500mL load; Can #C78012 2024-09-27 08:30 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404422.D 1.000 1.777 2024-10-03 19:50 TO15_SCNV6.M Air TDD Xavier 0924-208.#2 North of North Pond.Can Target Compound 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Concentration (ppbv) ND ND ND ND ND ND ND ND ND ND ND ND ND 0.0752 ND ND RL (ppbv) 0.0723 0.0717 0.0721 0.0711 0.0722 0.0714 0.0715 0.0720 0.0708 0.0702 0.0716 0.0705 0.0701 0.0732 0.0722 0.0729 MDL (ppbv) 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 0.0622 Concentration (ug/m) ND ND ND ND ND ND ND ND ND ND ND ND ND 0.351 ND ND RL (ug/m) 0.355 0.371 0.354 0.349 0.434 0.429 0.370 0.433 0.525 0.748 0.375 0.354 0.322 0.342 0.355 0.358 MDL (ug/m) 0.305 0.322 0.305 0.305 0.374 0.374 0.322 0.374 0.461 0.663 0.326 0.313 0.285 0.290 0.305 0.305 Flags m Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 867,621 3,120,911 2,572,229 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass, m pass pass EA Job# 0924-208 Page 9 of 44 EPA Inspection Report - Page 132 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #3 T-8302 0924-208; 500mL load; Can #C78066 2024-09-27 10:45 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404424.D 1.000 1.759 2024-10-03 21:33 TO15_SCNV6.M Air TDD Xavier 0924-208.#3 T-8302.Can Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Concentration (ppbv) 4.84 0.488 ND 2.22 ND 0.329 ND ND ND 0.228 1.26 0.168 0.0637 ND 3.85 ND 0.343 ND 0.249 0.104 ND ND ND 0.432 ND ND ND 0.304 0.739 ND RL (ppbv) 0.0680 0.0689 0.705 0.0696 0.0703 0.0685 0.0690 0.0715 0.0688 0.0742 0.0697 0.0693 0.0714 0.0708 0.0705 0.0701 0.0701 0.0760 0.0701 0.0720 0.0718 0.0723 0.0716 0.0715 0.0699 0.0720 0.0711 0.0727 0.0702 0.0706 MDL (ppbv) 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0697 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 Concentration (ug/m) 8.32 2.41 ND 4.59 ND 0.728 ND ND ND 1.28 2.38 0.385 0.488 ND 9.15 ND 0.842 ND 0.417 0.360 ND ND ND 1.52 ND ND ND 0.896 2.66 ND RL (ug/m) 0.117 0.340 4.92 0.144 0.180 0.151 0.268 0.188 0.301 0.417 0.131 0.159 0.547 0.280 0.167 0.218 0.172 0.238 0.118 0.250 0.284 0.261 0.155 0.252 0.283 0.253 0.282 0.214 0.253 0.344 EA Job# 0924-208 Page 10 of 44 MDL (ug/m) 0.106 0.304 0.430 0.127 0.157 0.136 0.239 0.162 0.269 0.346 0.131 0.141 0.471 0.244 0.146 0.192 0.151 0.193 0.103 0.214 0.244 0.222 0.134 0.217 0.249 0.217 0.244 0.181 0.222 0.300 Flags m m m J m m m m m EPA Inspection Report - Page 133 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #3 T-8302 0924-208; 500mL load; Can #C78066 2024-09-27 10:45 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404424.D 1.000 1.759 2024-10-03 21:33 TO15_SCNV6.M Air TDD Xavier 0924-208.#3 T-8302.Can Target Compound Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane Concentration (ppbv) 0.0789 ND 0.220 0.0785 0.868 ND 0.0728 0.270 ND ND ND ND ND ND ND 0.232 ND ND ND ND ND ND ND ND ND 0.0773 ND ND ND ND RL (ppbv) 0.0712 0.0711 0.0721 0.0708 0.0708 0.0727 0.0724 0.0713 0.0711 0.0708 0.0737 0.0706 0.0711 0.0699 0.0731 0.0716 0.0726 0.0716 0.0720 0.0720 0.0709 0.0720 0.0725 0.0699 0.0709 0.0713 0.0705 0.0689 0.0706 0.0711 MDL (ppbv) 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 Concentration (ug/m) 0.232 ND 0.756 0.494 2.77 ND 0.294 1.11 ND ND ND ND ND ND ND 0.874 ND ND ND ND ND ND ND ND ND 0.335 ND ND ND ND RL (ug/m) 0.210 0.387 0.248 0.445 0.226 0.340 0.293 0.292 0.382 0.327 0.301 0.254 0.476 0.317 0.299 0.270 0.329 0.390 0.488 0.295 0.604 0.553 0.333 0.303 0.487 0.310 0.306 0.294 0.729 0.488 EA Job# 0924-208 Page 11 of 44 MDL (ug/m) 0.181 0.336 0.212 0.387 0.197 0.287 0.249 0.252 0.331 0.284 0.252 0.222 0.412 0.279 0.252 0.232 0.279 0.336 0.417 0.252 0.524 0.473 0.283 0.267 0.422 0.267 0.267 0.262 0.636 0.422 Flags m m m m m m EPA Inspection Report - Page 134 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #3 T-8302 0924-208; 500mL load; Can #C78066 2024-09-27 10:45 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404424.D 1.000 1.759 2024-10-03 21:33 TO15_SCNV6.M Air TDD Xavier 0924-208.#3 T-8302.Can Target Compound 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Concentration (ppbv) ND ND ND ND ND ND ND ND ND ND ND ND ND 0.0656 ND ND RL (ppbv) 0.0716 0.0710 0.0713 0.0704 0.0715 0.0707 0.0708 0.0713 0.0701 0.0695 0.0708 0.0698 0.0694 0.0725 0.0715 0.0722 MDL (ppbv) 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 Concentration (ug/m) ND ND ND ND ND ND ND ND ND ND ND ND ND 0.306 ND ND RL (ug/m) 0.352 0.367 0.350 0.346 0.429 0.425 0.366 0.428 0.520 0.741 0.371 0.351 0.318 0.338 0.351 0.355 MDL (ug/m) 0.302 0.319 0.302 0.302 0.370 0.370 0.319 0.370 0.457 0.656 0.323 0.309 0.282 0.287 0.302 0.302 Flags J, m Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 859,466 3,134,958 2,594,837 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass pass pass EA Job# 0924-208 Page 12 of 44 EPA Inspection Report - Page 135 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #4 T-1401 0924-208; 500mL load; Can #C78079 2024-09-27 11:00 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404426.D 1.000 1.759 2024-10-03 23:15 TO15_SCNV6.M Air TDD Xavier 0924-208.#4 T-1401.Can Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Concentration (ppbv) 6.27 0.444 ND 2.51 0.0840 1.10 ND ND ND 0.218 8.10 0.463 0.0633 ND 9.64 10.7 8.60 ND 1.69 0.103 ND ND ND 0.582 ND ND ND 0.400 1.27 1.66 RL (ppbv) 0.0680 0.0689 0.705 0.0696 0.0703 0.0685 0.0690 0.0715 0.0688 0.0742 0.0697 0.0693 0.0714 0.0708 0.0705 0.0702 0.0702 0.0760 0.0702 0.0721 0.0718 0.0723 0.0716 0.0715 0.0699 0.0720 0.0711 0.0728 0.0702 0.0706 MDL (ppbv) 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0697 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 Concentration (ug/m) 10.8 2.19 ND 5.18 0.214 2.42 ND ND ND 1.22 15.3 1.06 0.484 ND 22.9 33.4 21.1 ND 2.83 0.356 ND ND ND 2.05 ND ND ND 1.18 4.57 8.09 RL (ug/m) 0.117 0.341 4.93 0.144 0.180 0.151 0.268 0.189 0.301 0.417 0.131 0.159 0.547 0.281 0.167 0.218 0.172 0.238 0.118 0.250 0.284 0.261 0.155 0.252 0.283 0.253 0.282 0.214 0.253 0.344 EA Job# 0924-208 Page 13 of 44 MDL (ug/m) 0.106 0.304 0.430 0.127 0.157 0.136 0.239 0.162 0.269 0.346 0.131 0.141 0.472 0.244 0.146 0.192 0.151 0.193 0.103 0.214 0.244 0.222 0.134 0.217 0.249 0.217 0.244 0.182 0.222 0.300 Flags m m m J m m m m m m EPA Inspection Report - Page 136 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #4 T-1401 0924-208; 500mL load; Can #C78079 2024-09-27 11:00 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404426.D 1.000 1.759 2024-10-03 23:15 TO15_SCNV6.M Air TDD Xavier 0924-208.#4 T-1401.Can Target Compound Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane Concentration (ppbv) 0.168 ND 2.14 0.0762 7.68 ND 0.0866 0.727 ND ND ND 0.424 ND ND ND 1.91 ND ND ND ND ND ND ND 1.08 ND 1.04 0.891 2.05 ND ND RL (ppbv) 0.0712 0.0711 0.0721 0.0709 0.0708 0.0728 0.0724 0.0713 0.0712 0.0709 0.0737 0.0706 0.0711 0.0699 0.0731 0.0716 0.0726 0.0716 0.0720 0.0720 0.0709 0.0720 0.0725 0.0699 0.0709 0.0714 0.0705 0.0690 0.0706 0.0712 MDL (ppbv) 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 Concentration (ug/m) 0.495 ND 7.35 0.479 24.5 ND 0.350 2.98 ND ND ND 1.53 ND ND ND 7.18 ND ND ND ND ND ND ND 4.69 ND 4.52 3.87 8.71 ND ND RL (ug/m) 0.210 0.388 0.248 0.446 0.226 0.340 0.293 0.292 0.382 0.327 0.302 0.254 0.476 0.317 0.299 0.270 0.329 0.390 0.488 0.295 0.604 0.553 0.334 0.303 0.487 0.310 0.306 0.294 0.729 0.488 EA Job# 0924-208 Page 14 of 44 MDL (ug/m) 0.182 0.336 0.212 0.387 0.197 0.288 0.249 0.252 0.331 0.284 0.252 0.222 0.412 0.279 0.252 0.232 0.279 0.336 0.417 0.252 0.524 0.473 0.283 0.267 0.422 0.267 0.267 0.262 0.636 0.422 Flags m m m m m m EPA Inspection Report - Page 137 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #4 T-1401 0924-208; 500mL load; Can #C78079 2024-09-27 11:00 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404426.D 1.000 1.759 2024-10-03 23:15 TO15_SCNV6.M Air TDD Xavier 0924-208.#4 T-1401.Can Target Compound 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Concentration (ppbv) 0.498 ND 0.114 0.404 ND ND ND ND ND ND 1.53 ND 6.05 0.216 0.119 2.38 RL (ppbv) 0.0716 0.0710 0.0714 0.0704 0.0715 0.0707 0.0708 0.0713 0.0701 0.0695 0.0709 0.0698 0.0695 0.0725 0.0715 0.0722 MDL (ppbv) 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 0.0616 Concentration (ug/m) 2.45 ND 0.559 1.99 ND ND ND ND ND ND 7.99 ND 27.7 1.01 0.583 11.7 RL (ug/m) 0.352 0.367 0.351 0.346 0.430 0.425 0.366 0.428 0.520 0.741 0.371 0.351 0.319 0.338 0.351 0.355 MDL (ug/m) 0.303 0.319 0.303 0.303 0.370 0.370 0.319 0.370 0.457 0.656 0.323 0.310 0.282 0.288 0.303 0.303 Flags m m m m Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 919,997 3,386,263 2,921,057 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass pass pass EA Job# 0924-208 Page 15 of 44 EPA Inspection Report - Page 138 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #5 FGC Discharge Drum 0924-208; 500mL load; Can #C78255 2024-09-27 11:45 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404428.D 1.000 1.753 2024-10-04 00:59 TO15_SCNV6.M Air TDD Xavier 0924-208.#5 FGC Discharge Drum.Can Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Concentration (ppbv) 42.5 0.476 ND 0.566 ND 1.35 ND ND ND 0.240 1.26 0.192 0.0635 ND 3.14 ND 0.364 ND 0.281 0.105 ND ND ND 0.316 ND ND ND 0.234 1.57 ND RL (ppbv) 0.0678 0.0687 0.703 0.0694 0.0701 0.0682 0.0688 0.0713 0.0686 0.0740 0.0695 0.0691 0.0712 0.0706 0.0703 0.0699 0.0699 0.0757 0.0699 0.0718 0.0715 0.0721 0.0714 0.0713 0.0696 0.0718 0.0708 0.0725 0.0700 0.0703 MDL (ppbv) 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0695 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 Concentration (ug/m) 73.1 2.35 ND 1.17 ND 2.98 ND ND ND 1.35 2.38 0.439 0.486 ND 7.46 ND 0.895 ND 0.471 0.365 ND ND ND 1.11 ND ND ND 0.691 5.66 ND RL (ug/m) 0.117 0.339 4.91 0.143 0.179 0.151 0.267 0.188 0.300 0.415 0.131 0.158 0.545 0.280 0.167 0.218 0.172 0.237 0.117 0.249 0.283 0.260 0.155 0.251 0.282 0.252 0.281 0.214 0.252 0.343 EA Job# 0924-208 Page 16 of 44 MDL (ug/m) 0.106 0.303 0.429 0.127 0.157 0.136 0.238 0.162 0.268 0.345 0.131 0.141 0.470 0.243 0.146 0.191 0.151 0.192 0.103 0.213 0.243 0.221 0.133 0.216 0.248 0.216 0.243 0.181 0.221 0.299 Flags m m m J, m m m m m m m EPA Inspection Report - Page 139 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #5 FGC Discharge Drum 0924-208; 500mL load; Can #C78255 2024-09-27 11:45 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404428.D 1.000 1.753 2024-10-04 00:59 TO15_SCNV6.M Air TDD Xavier 0924-208.#5 FGC Discharge Drum.Can Target Compound Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane Concentration (ppbv) ND ND 0.144 0.0776 3.84 ND 0.0995 ND ND ND ND ND ND ND ND 0.944 ND ND ND ND ND ND ND 0.0896 ND 0.0932 ND 0.217 ND ND RL (ppbv) 0.0710 0.0708 0.0719 0.0706 0.0706 0.0725 0.0722 0.0710 0.0709 0.0706 0.0734 0.0703 0.0708 0.0696 0.0729 0.0714 0.0724 0.0713 0.0718 0.0718 0.0707 0.0718 0.0722 0.0696 0.0707 0.0711 0.0703 0.0687 0.0703 0.0709 MDL (ppbv) 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 Concentration (ug/m) ND ND 0.495 0.488 12.2 ND 0.403 ND ND ND ND ND ND ND ND 3.55 ND ND ND ND ND ND ND 0.389 ND 0.405 ND 0.922 ND ND RL (ug/m) 0.209 0.386 0.247 0.444 0.225 0.339 0.292 0.291 0.381 0.326 0.301 0.253 0.474 0.316 0.298 0.269 0.328 0.389 0.486 0.294 0.602 0.551 0.332 0.302 0.485 0.309 0.305 0.293 0.727 0.486 EA Job# 0924-208 Page 17 of 44 MDL (ug/m) 0.181 0.335 0.211 0.386 0.196 0.287 0.248 0.251 0.330 0.283 0.251 0.221 0.411 0.278 0.251 0.231 0.278 0.335 0.416 0.251 0.522 0.471 0.282 0.266 0.421 0.266 0.266 0.261 0.634 0.421 Flags m m m EPA Inspection Report - Page 140 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #5 FGC Discharge Drum 0924-208; 500mL load; Can #C78255 2024-09-27 11:45 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404428.D 1.000 1.753 2024-10-04 00:59 TO15_SCNV6.M Air TDD Xavier 0924-208.#5 FGC Discharge Drum.Can Target Compound 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Concentration (ppbv) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND RL (ppbv) 0.0713 0.0708 0.0711 0.0702 0.0713 0.0705 0.0706 0.0710 0.0699 0.0693 0.0706 0.0696 0.0692 0.0722 0.0713 0.0720 MDL (ppbv) 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 0.0614 Concentration (ug/m) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND RL (ug/m) 0.350 0.366 0.349 0.345 0.428 0.424 0.365 0.427 0.518 0.739 0.370 0.350 0.318 0.337 0.350 0.354 MDL (ug/m) 0.301 0.318 0.301 0.301 0.369 0.369 0.318 0.369 0.455 0.654 0.322 0.309 0.281 0.287 0.301 0.301 Flags Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 910,259 3,322,388 2,769,423 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass pass pass EA Job# 0924-208 Page 18 of 44 EPA Inspection Report - Page 141 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #6 OldTar Pot Lvl3 0924-208; 500mL load; Can #C78405 2024-09-27 12:00 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404430.D 1.000 1.756 2024-10-04 02:42 TO15_SCNV6.M Air TDD Xavier 0924-208.#6 OldTar Pot Lvl3.Can Target Compound Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Tetrahydrofuran 1,1,1-Trichloroethane Concentration (ppbv) 0.455 ND 0.564 ND ND ND ND 0.225 1.54 0.709 0.0692 ND 5.71 0.0664 0.433 ND ND 0.149 ND ND 1.61 1.30 ND ND ND 0.363 2.23 ND ND ND RL (ppbv) 0.0688 0.704 0.0695 0.0702 0.0689 0.0714 0.0687 0.0741 0.0696 0.0692 0.0713 0.0707 0.0704 0.0700 0.0700 0.0759 0.0700 0.0719 0.0716 0.0722 0.0715 0.0714 0.0697 0.0718 0.0709 0.0726 0.0701 0.0704 0.0711 0.0709 MDL (ppbv) 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0696 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 Concentration (ug/m) 2.25 ND 1.16 ND ND ND ND 1.26 2.91 1.62 0.530 ND 13.6 0.207 1.06 ND ND 0.519 ND ND 3.50 4.58 ND ND ND 1.07 8.03 ND ND ND RL (ug/m) 0.340 4.92 0.143 0.179 0.267 0.188 0.300 0.416 0.131 0.159 0.546 0.280 0.167 0.218 0.172 0.237 0.117 0.250 0.284 0.260 0.155 0.251 0.282 0.253 0.281 0.214 0.252 0.344 0.209 0.387 EA Job# 0924-208 Page 19 of 44 MDL (ug/m) 0.304 0.429 0.127 0.157 0.238 0.162 0.269 0.345 0.131 0.141 0.471 0.243 0.146 0.191 0.151 0.192 0.103 0.213 0.243 0.221 0.133 0.216 0.249 0.216 0.243 0.181 0.221 0.300 0.181 0.335 Flags m m J m J, m m m m EPA Inspection Report - Page 142 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #6 OldTar Pot Lvl3 0924-208; 500mL load; Can #C78405 2024-09-27 12:00 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404430.D 1.000 1.756 2024-10-04 02:42 TO15_SCNV6.M Air TDD Xavier 0924-208.#6 OldTar Pot Lvl3.Can Target Compound Cyclohexane Carbon tetrachloride 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene Concentration (ppbv) 0.561 0.0791 ND ND 0.289 ND ND ND ND ND ND ND 27.7 ND ND ND ND ND ND ND 0.545 ND 0.426 0.138 0.983 ND ND ND ND ND RL (ppbv) 0.0720 0.0707 0.0726 0.0723 0.0711 0.0710 0.0707 0.0735 0.0704 0.0709 0.0697 0.0730 0.0715 0.0725 0.0714 0.0718 0.0718 0.0708 0.0718 0.0723 0.0697 0.0708 0.0712 0.0704 0.0688 0.0704 0.0710 0.0714 0.0709 0.0712 MDL (ppbv) 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 Concentration (ug/m) 1.93 0.498 ND ND 1.18 ND ND ND ND ND ND ND 104 ND ND ND ND ND ND ND 2.36 ND 1.85 0.597 4.18 ND ND ND ND ND RL (ug/m) 0.248 0.445 0.339 0.292 0.291 0.381 0.327 0.301 0.254 0.475 0.316 0.299 0.269 0.329 0.389 0.487 0.294 0.603 0.552 0.333 0.303 0.486 0.309 0.305 0.293 0.728 0.487 0.351 0.367 0.350 EA Job# 0924-208 Page 20 of 44 MDL (ug/m) 0.211 0.386 0.287 0.249 0.252 0.330 0.284 0.251 0.221 0.412 0.279 0.252 0.231 0.279 0.335 0.417 0.252 0.523 0.472 0.283 0.267 0.422 0.267 0.267 0.262 0.635 0.422 0.302 0.318 0.302 Flags m m m EPA Inspection Report - Page 143 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #6 OldTar Pot Lvl3 0924-208; 500mL load; Can #C78405 2024-09-27 12:00 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404430.D 1.000 1.756 2024-10-04 02:42 TO15_SCNV6.M Air TDD Xavier 0924-208.#6 OldTar Pot Lvl3.Can Target Compound 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Concentration (ppbv) ND ND ND ND ND ND ND ND ND ND 0.102 ND ND RL (ppbv) 0.0703 0.0714 0.0706 0.0707 0.0711 0.0700 0.0694 0.0707 0.0697 0.0693 0.0723 0.0714 0.0721 MDL (ppbv) 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 0.0615 Concentration (ug/m) ND ND ND ND ND ND ND ND ND ND 0.477 ND ND RL (ug/m) 0.345 0.429 0.424 0.366 0.427 0.519 0.740 0.371 0.350 0.318 0.338 0.351 0.354 MDL (ug/m) 0.302 0.369 0.369 0.318 0.369 0.456 0.655 0.322 0.309 0.282 0.287 0.302 0.302 Flags m Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 968,162 3,686,668 2,948,333 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass pass pass EA Job# 0924-208 Page 21 of 44 EPA Inspection Report - Page 144 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID #6 OldTar Pot Lvl3 0924-208; *20=25mL load; Can #C78405 2024-09-27 12:00 2024-10-03 00:00 Sample Xavier_X100324A_0924-208.v4 X2404431.D 20.000 1.756 2024-10-04 03:29 TO15_SCNV6.M Air TDD Xavier 0924-208.#6 OldTar Pot Lvl3.Can Target Compound Propylene 1,3-Butadiene Benzene Concentration (ppbv) 174 175 663 RL (ppbv) 1.36 1.37 1.41 MDL (ppbv) 1.23 1.23 1.23 Concentration (ug/m) 299 386 2,116 RL (ug/m) 2.33 3.02 4.51 MDL (ug/m) 2.11 2.72 3.92 Flags m Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Response 886,830 3,316,242 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass pass EA Job# 0924-208 Page 22 of 44 EPA Inspection Report - Page 145 of 170 Enthalpy Analytical -- Canister Pressurization Job No. 0924-208 Company Dow Chemical Company Site Dole SCO-St. Charles, LA Can Number Job Sample ID CleanDate LeakCheckDate LeakCheckAnalyst BlankCheckRef Weather Station ID Weather Station Exp. Transducer ID Transducer Exp. Can Size (L) Evac Temp (F) Evac Pbar (mmHg) Evac Gauge (mmHg) Evac Analyst Evac Time Evac Vol (L) Recd. Temp (F) Recd. Pbar (mmHg) Recd. Gauge (mmHg) Recd Vol (L) P1 Temp (F) P1 Pbar (mmHg) P1 Gauge (mmHg) P1 Analyst P1 Time P1 Fill Gas P1 Vol (L) P1 DF Override P1 Dilution Factor C78284 0924-208 #1 South of North Pond 06/29/2024 07/08/2024 buddhikaranawella X2403039 97 08/24/2025 3 11/17/2024 6 68.7 756.4 -756.4 buddhikaranawella 09/25/24 10:38 0.000 68.4 758.2 -202.0 4.388 68.4 758.2 214.0 buddhikaranawella 10/03/24 15:14 Nitrogen 7.669 false 1.748 C78012 0924-208 #2 North of North Pond 08/13/2024 08/15/2024 buddhikaranawella X2403684 97 08/24/2025 3 11/17/2024 6 68.7 756.4 -756.4 buddhikaranawella 09/25/24 10:34 0.000 68.4 758.2 -238.0 4.104 68.4 758.2 166.0 buddhikaranawella 10/03/24 15:24 Nitrogen 7.291 false 1.777 C78066 0924-208 #3 T-8302 08/22/2024 08/26/2024 buddhikaranawella Y2402929 97 08/24/2025 3 11/17/2024 6 68.7 756.4 -756.4 buddhikaranawella 09/25/24 10:36 0.000 68.4 758.2 -210.0 4.325 68.4 758.2 206.0 buddhikaranawella 10/03/24 15:34 Nitrogen 7.606 false 1.759 C78079 0924-208 #4 T-1401 07/22/2024 07/30/2024 buddhikaranawella T2401330 97 08/24/2025 3 11/17/2024 6 68.7 756.4 -756.4 buddhikaranawella 09/25/24 10:40 0.000 68.4 758.2 -242.0 4.072 68.4 758.2 150.0 buddhikaranawella 10/03/24 15:39 Nitrogen 7.164 false 1.759 C78255 0924-208 #5 FGC Discharge Drum 08/07/2024 08/13/2024 buddhikaranawella X2403619 97 08/24/2025 3 11/17/2024 6 68.7 756.4 -756.4 buddhikaranawella 09/25/24 10:37 0.000 68.4 758.2 -218.0 4.261 68.4 758.2 189.0 buddhikaranawella 10/03/24 15:45 Nitrogen 7.472 false 1.753 C78405 0924-208 #6 OldTar Pot Lvl3 07/26/2024 07/30/2024 buddhikaranawella T2401365 97 08/24/2025 3 11/17/2024 6 68.7 756.4 -756.4 buddhikaranawella 09/25/24 10:35 0.000 68.4 758.2 -180.0 4.561 68.4 758.2 257.0 buddhikaranawella 10/03/24 15:49 Nitrogen 8.009 false 1.756 Canister Pressurization Report ver. 20240301 Report Printed 10/14/2024 2:30:56 PM EA Job# 0924-208 Page 23 of 44 EPA Inspection Report - Page 146 of 170 Lab QC EA Job# 0924-208 Page 24 of 44 EPA Inspection Report - Page 147 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID 0924-208.#1 South of North Pond.LD 0924-208; 500mL load; Can #C78284 2024-09-27 10:15 2024-10-03 00:00 LabDup Xavier_X100324A_0924-208.v1 X2404421.D 1.000 1.748 2024-10-03 18:55 TO15_SCNV6.M Air 0924-208.#1 South of North Pond.Can 0924-208.#1 South of North Pond.LD Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Parent Conc (ppbv) 2.31 0.488 ND 1.05 ND 0.456 ND ND ND 0.225 1.14 0.257 0.0659 ND 3.82 0.0622 1.03 ND 0.276 0.115 ND ND ND 0.449 ND ND ND 0.226 1.43 0.0619 0.0819 ND 0.231 0.0743 2.09 ND 0.0641 0.393 Concentration (ppbv) 2.25 0.457 ND 1.03 ND 0.450 ND ND ND 0.223 1.01 0.245 0.0679 ND 3.54 ND 0.970 ND 0.277 0.114 ND ND ND 0.463 ND ND ND 0.252 1.48 0.0707 ND ND 0.235 0.0775 2.04 ND 0.0708 0.396 RL (ppbv) 0.0675 0.0684 0.701 0.0691 0.0698 0.0680 0.0686 0.0710 0.0684 0.0738 0.0693 0.0689 0.0710 0.0703 0.0701 0.0697 0.0697 0.0755 0.0697 0.0716 0.0713 0.0719 0.0712 0.0710 0.0694 0.0715 0.0706 0.0723 0.0698 0.0701 0.0708 0.0706 0.0717 0.0704 0.0703 0.0723 0.0719 0.0708 MDL (ppbv) 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0693 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 Concentration (ug/m) 3.87 2.26 ND 2.13 ND 0.995 ND ND ND 1.25 1.90 0.562 0.520 ND 8.39 ND 2.38 ND 0.464 0.396 ND ND ND 1.63 ND ND ND 0.741 5.35 0.345 ND ND 0.808 0.488 6.52 ND 0.287 1.62 RL (ug/m) 0.116 0.338 4.89 0.143 0.178 0.150 0.266 0.187 0.299 0.414 0.130 0.158 0.544 0.279 0.166 0.217 0.171 0.236 0.117 0.249 0.283 0.259 0.154 0.250 0.281 0.252 0.280 0.213 0.251 0.342 0.209 0.385 0.247 0.443 0.225 0.338 0.291 0.290 MDL (ug/m) 0.105 0.302 0.427 0.126 0.156 0.135 0.237 0.161 0.267 0.344 0.130 0.140 0.469 0.242 0.145 0.190 0.150 0.191 0.103 0.212 0.242 0.220 0.133 0.216 0.247 0.215 0.242 0.180 0.220 0.299 0.180 0.334 0.210 0.385 0.195 0.286 0.247 0.251 Dup Diff (%) 2.6 6.5 Flags pass, m pass 1.8 pass 1.4 pass 0.8 pass, m 12.2 pass, m 4.6 pass, m 3.0 pass, J, m 7.7 pass, m 5.6 pass, m 0.2 pass, m 0.8 pass 3.1 pass, m 10.6 pass, m 3.7 pass, m 13.3 pass 1.5 pass, m 4.2 pass, m 2.5 pass, m 9.9 pass, J 0.8 pass, m EA Job# 0924-208 Page 25 of 44 EPA Inspection Report - Page 148 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID 0924-208.#1 South of North Pond.LD 0924-208; 500mL load; Can #C78284 2024-09-27 10:15 2024-10-03 00:00 LabDup Xavier_X100324A_0924-208.v1 X2404421.D 1.000 1.748 2024-10-03 18:55 TO15_SCNV6.M Air 0924-208.#1 South of North Pond.Can 0924-208.#1 South of North Pond.LD Target Compound Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene Parent Conc (ppbv) ND ND ND 6.14 ND ND ND 0.327 ND ND ND ND ND ND ND ND ND 0.0676 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Concentration (ppbv) ND ND ND 6.16 ND ND ND 0.316 ND ND ND ND ND ND ND ND ND 0.0648 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.0649 ND RL (ppbv) 0.0707 0.0704 0.0732 0.0701 0.0706 0.0694 0.0726 0.0712 0.0722 0.0711 0.0715 0.0715 0.0705 0.0715 0.0720 0.0694 0.0705 0.0709 0.0701 0.0685 0.0701 0.0707 0.0711 0.0705 0.0709 0.0700 0.0710 0.0703 0.0703 0.0708 0.0696 0.0691 0.0704 0.0694 0.0690 0.0720 0.0710 MDL (ppbv) 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 0.0612 Concentration (ug/m) ND ND ND 22.2 ND ND ND 1.19 ND ND ND ND ND ND ND ND ND 0.281 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.303 ND RL (ug/m) 0.380 0.325 0.300 0.253 0.473 0.315 0.297 0.268 0.327 0.388 0.485 0.293 0.600 0.549 0.331 0.301 0.484 0.308 0.304 0.292 0.724 0.485 0.349 0.365 0.348 0.344 0.427 0.422 0.364 0.426 0.516 0.736 0.369 0.349 0.317 0.336 0.349 MDL (ug/m) 0.329 0.283 0.250 0.220 0.410 0.277 0.250 0.230 0.277 0.334 0.415 0.250 0.521 0.470 0.281 0.265 0.420 0.265 0.265 0.260 0.632 0.420 0.301 0.317 0.301 0.301 0.368 0.368 0.317 0.368 0.454 0.652 0.321 0.308 0.281 0.286 0.301 Dup Diff (%) Flags 0.2 pass, m 3.3 pass 4.3 pass, J J, m EA Job# 0924-208 Page 26 of 44 EPA Inspection Report - Page 149 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID 0924-208.#1 South of North Pond.LD 0924-208; 500mL load; Can #C78284 2024-09-27 10:15 2024-10-03 00:00 LabDup Xavier_X100324A_0924-208.v1 X2404421.D 1.000 1.748 2024-10-03 18:55 TO15_SCNV6.M Air 0924-208.#1 South of North Pond.Can 0924-208.#1 South of North Pond.LD Target Compound n-Propylbenzene Parent Conc (ppbv) ND Concentration (ppbv) ND RL (ppbv) 0.0717 MDL (ppbv) 0.0612 Concentration (ug/m) ND RL (ug/m) 0.352 MDL (ug/m) 0.301 Dup Diff (%) Flags Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 876,924 3,185,065 2,615,426 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass, m pass pass EA Job# 0924-208 Page 27 of 44 EPA Inspection Report - Page 150 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID X100324A_Humid Blank Can #C78367/1874 500mL load Blank Xavier_X100324A_0924-208.v1 X2404419.D 1.000 1.000 2024-10-03 15:21 TO15_SCNV6.M Air TDD Xavier X100324A_Humid Blank Can #C78367/1874 Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Tetrahydrofuran 1,1,1-Trichloroethane Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m) ND ND ND ND ND ND ND ND ND ND 0.0540 ND ND ND 0.0659 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.0386 0.0392 0.401 0.0396 0.0400 0.0389 0.0392 0.0406 0.0391 0.0422 0.0396 0.0394 0.0406 0.0402 0.0401 0.0399 0.0399 0.0432 0.0399 0.0410 0.0408 0.0411 0.0407 0.0406 0.0397 0.0409 0.0404 0.0414 0.0399 0.0401 0.0405 0.0404 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0396 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 ND ND ND ND ND ND ND ND ND ND 0.102 ND ND ND 0.156 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND EA Job# 0924-208 Page 28 of 44 RL (ug/m) 0.0665 0.194 2.80 0.0816 0.102 0.0860 0.152 0.107 0.171 0.237 0.0746 0.0903 0.311 0.159 0.0951 0.124 0.0980 0.135 0.0669 0.142 0.162 0.148 0.0883 0.143 0.161 0.144 0.160 0.122 0.144 0.196 0.119 0.220 MDL (ug/m) 0.0602 0.173 0.245 0.0722 0.0894 0.0774 0.136 0.0923 0.153 0.197 0.0746 0.0802 0.268 0.139 0.0831 0.109 0.0860 0.109 0.0587 0.122 0.139 0.126 0.0759 0.123 0.142 0.123 0.139 0.103 0.126 0.171 0.103 0.191 Flags pass pass pass pass pass pass pass pass pass pass pass, m pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass EPA Inspection Report - Page 151 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID X100324A_Humid Blank Can #C78367/1874 500mL load Blank Xavier_X100324A_0924-208.v1 X2404419.D 1.000 1.000 2024-10-03 15:21 TO15_SCNV6.M Air TDD Xavier X100324A_Humid Blank Can #C78367/1874 Target Compound Cyclohexane Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m) ND 0.0410 0.0350 ND ND 0.0403 0.0350 ND ND 0.0402 0.0350 ND ND 0.0414 0.0350 ND ND 0.0412 0.0350 ND ND 0.0405 0.0350 ND ND 0.0404 0.0350 ND ND 0.0403 0.0350 ND ND 0.0419 0.0350 ND ND 0.0401 0.0350 ND ND 0.0404 0.0350 ND ND 0.0397 0.0350 ND ND 0.0416 0.0350 ND ND 0.0407 0.0350 ND ND 0.0413 0.0350 ND ND 0.0407 0.0350 ND ND 0.0409 0.0350 ND ND 0.0409 0.0350 ND ND 0.0403 0.0350 ND ND 0.0409 0.0350 ND ND 0.0412 0.0350 ND ND 0.0397 0.0350 ND ND 0.0403 0.0350 ND ND 0.0406 0.0350 ND ND 0.0401 0.0350 ND ND 0.0392 0.0350 ND ND 0.0401 0.0350 ND ND 0.0404 0.0350 ND ND 0.0407 0.0350 ND ND 0.0404 0.0350 ND ND 0.0406 0.0350 ND ND 0.0400 0.0350 ND EA Job# 0924-208 Page 29 of 44 RL (ug/m) 0.141 0.253 0.128 0.193 0.166 0.166 0.217 0.186 0.171 0.144 0.271 0.180 0.170 0.153 0.187 0.222 0.277 0.168 0.343 0.314 0.190 0.172 0.277 0.176 0.174 0.167 0.414 0.277 0.200 0.209 0.199 0.197 MDL (ug/m) 0.120 0.220 0.112 0.163 0.142 0.143 0.188 0.162 0.143 0.126 0.234 0.159 0.143 0.132 0.159 0.191 0.237 0.143 0.298 0.269 0.161 0.152 0.240 0.152 0.152 0.149 0.362 0.240 0.172 0.181 0.172 0.172 Flags pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass EPA Inspection Report - Page 152 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID X100324A_Humid Blank Can #C78367/1874 500mL load Blank Xavier_X100324A_0924-208.v1 X2404419.D 1.000 1.000 2024-10-03 15:21 TO15_SCNV6.M Air TDD Xavier X100324A_Humid Blank Can #C78367/1874 Target Compound 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Concentration (ppbv) ND ND ND ND ND ND ND ND ND ND ND ND RL (ppbv) 0.0406 0.0402 0.0402 0.0405 0.0398 0.0395 0.0403 0.0397 0.0395 0.0412 0.0406 0.0410 MDL (ppbv) 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 0.0350 Concentration (ug/m) ND ND ND ND ND ND ND ND ND ND ND ND RL (ug/m) 0.244 0.242 0.208 0.243 0.295 0.421 0.211 0.199 0.181 0.192 0.200 0.202 MDL (ug/m) 0.210 0.210 0.181 0.210 0.260 0.373 0.183 0.176 0.161 0.163 0.172 0.172 Flags pass pass pass pass pass pass pass pass pass pass pass pass Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 869,640 3,102,662 2,590,384 Retention Time (min) Concentration (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass pass pass EA Job# 0924-208 Page 30 of 44 EPA Inspection Report - Page 153 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID X100324A_5ppbv TO15 LCS 125mL load; Can #C98040; GCMSPrepPg1374; MP1 QC Xavier_X100324A_0924-208.v1 X2404416.D 1.000 1.000 2024-10-03 12:41 TO15_SCNV6.M Air X100324A_5ppbv TO15 LCS Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Response 612,392 2,055,351 2,149,110 739,902 526,578 738,255 437,447 356,750 752,694 2,347,776 310,433 275,880 1,516,764 1,394,812 1,482,239 2,116,542 1,426,492 295,177 694,420 1,159,714 1,250,656 1,931,734 631,593 1,201,028 1,462,244 1,979,413 1,437,929 335,359 322,593 1,740,875 316,653 1,757,914 1,276,155 Concentration (ppbv) 4.40 5.11 5.17 5.11 6.16 5.13 4.73 5.20 4.56 5.86 3.84 4.85 5.24 5.40 4.99 5.21 4.68 5.07 5.08 5.25 5.93 5.43 5.64 5.62 5.71 4.75 6.18 5.24 5.21 5.74 5.32 5.61 5.88 Expected Conc (ppbv) 4.74 4.80 5.06 4.88 4.96 4.89 4.86 5.03 4.94 5.30 5.05 4.88 4.89 4.98 5.15 4.86 4.97 5.00 5.11 5.00 5.04 5.08 4.98 5.00 4.89 5.06 4.98 5.24 4.95 5.06 5.04 4.94 5.02 Recovery (%) Flags 92.8 pass 107 pass 102 pass 105 pass 124 pass 105 pass 97.3 pass, m 103 pass 92.3 pass 110 pass 76.1 pass 99.3 pass 107 pass 108 pass 96.8 pass, m 107 pass 94.2 pass, m 101 pass, m 99.3 pass 105 pass 118 pass 107 pass, m 113 pass 112 pass, m 117 pass 93.9 pass 124 pass 100 pass, m 105 pass 114 pass 106 pass 114 pass 117 pass, m EA Job# 0924-208 Page 31 of 44 EPA Inspection Report - Page 154 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID X100324A_5ppbv TO15 LCS 125mL load; Can #C98040; GCMSPrepPg1374; MP1 QC Xavier_X100324A_0924-208.v1 X2404416.D 1.000 1.000 2024-10-03 12:41 TO15_SCNV6.M Air X100324A_5ppbv TO15 LCS Target Compound Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Response 1,973,145 2,128,523 4,092,595 1,281,162 785,705 1,126,841 939,346 793,117 489,478 1,860,194 1,207,713 2,433,963 2,924,830 1,326,872 1,011,135 1,633,403 2,356,262 2,208,071 1,795,698 2,438,744 3,682,929 1,476,058 2,929,481 2,978,314 2,326,328 2,455,086 2,356,904 4,401,485 3,791,902 3,666,180 3,585,034 2,860,884 2,944,774 Concentration (ppbv) 5.61 5.29 5.78 5.94 5.56 4.74 5.61 5.63 5.27 5.72 4.96 5.44 5.34 5.33 5.25 5.14 5.57 5.46 5.29 5.08 5.15 5.21 5.42 5.29 5.26 5.81 5.49 5.44 5.67 5.46 5.23 5.14 5.20 Expected Conc (ppbv) 5.18 4.95 5.09 5.06 5.00 5.05 4.94 5.14 4.93 4.83 4.87 5.14 5.00 5.04 4.98 5.02 5.07 5.00 5.04 5.04 4.89 5.08 5.09 5.01 4.80 4.96 4.97 4.84 5.00 4.99 4.87 5.00 5.02 Recovery (%) Flags 108 pass 107 pass, m 114 pass, m 117 pass 111 pass, m 93.8 pass 113 pass 110 pass, m 107 pass 118 pass 102 pass 106 pass, m 107 pass 106 pass 105 pass 102 pass 110 pass, m 109 pass 105 pass 101 pass 105 pass 103 pass 107 pass, m 106 pass 109 pass 117 pass 110 pass 112 pass 114 pass 109 pass 107 pass 103 pass 103 pass EA Job# 0924-208 Page 32 of 44 EPA Inspection Report - Page 155 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID X100324A_5ppbv TO15 LCS 125mL load; Can #C98040; GCMSPrepPg1374; MP1 QC Xavier_X100324A_0924-208.v1 X2404416.D 1.000 1.000 2024-10-03 12:41 TO15_SCNV6.M Air X100324A_5ppbv TO15 LCS Target Compound Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Response 3,371,758 2,800,174 2,420,443 2,278,226 5,109,178 1,622,209 602,718 801,334 4,230,175 5,109,980 Concentration (ppbv) 5.66 5.23 5.23 5.65 4.82 5.18 5.37 5.38 5.17 5.56 Expected Conc (ppbv) 4.96 5.00 4.88 4.95 5.00 4.90 4.88 5.02 5.04 5.00 Recovery (%) Flags 114 pass, m 105 pass 107 pass 114 pass 96.5 pass 106 pass 110 pass, m 107 pass, m 103 pass 111 pass Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 873,826 3,215,828 2,745,963 Retention Time Concentration (min) (ppbv) 10.99 5.21 12.41 5.16 16.54 4.92 Flag pass pass pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA Job# 0924-208 Page 33 of 44 EPA Inspection Report - Page 156 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID X100324A_5ppbv TO15 LCS LD 125mL load; Can #C98040; GCMSPrepPg1374; MP1 QcDup Xavier_X100324A_0924-208.v1 X2404417.D 1.000 1.000 2024-10-03 13:29 TO15_SCNV6.M Air X100324A_5ppbv TO15 LCS X100324A_5ppbv TO15 LCS LD Target Compound Propylene Freon 12 (CCl2F2) Freon 114 (C2Cl2F4) Chloromethane Chloroethene (Vinyl chloride) 1,3-Butadiene Bromomethane Chloroethane Bromoethene (Vinyl bromide) Freon 11 (CCl3F) Ethanol Acrolein Freon 113 (C2Cl3F3) 1,1-Dichloroethene Acetone Carbon disulfide Isopropyl alcohol Allyl chloride (3-chloropropene) Acetonitrile Methylene chloride trans-1,2-Dichloroethene Methyl tert-butyl ether Acrylonitrile Hexane 1,1-Dichloroethane Vinyl acetate cis-1,2-Dichloroethene Methyl ethyl ketone (2-Butanone) Ethyl acetate Chloroform Tetrahydrofuran 1,1,1-Trichloroethane Cyclohexane Response Concentration Expected Parent Recovery Diff (ppbv) Conc (ppbv) Conc (ppbv) (%) (%) 622,293 4.50 4.74 4.40 2,076,650 5.20 4.80 5.11 2,151,568 5.21 5.06 5.17 735,652 5.11 4.88 5.11 531,241 6.26 4.96 6.16 743,043 5.19 4.89 5.13 435,308 4.74 4.86 4.73 363,885 5.34 5.03 5.20 755,117 4.60 4.94 4.56 2,360,486 5.93 5.30 5.86 301,737 3.76 5.05 3.84 276,273 4.89 4.88 4.85 1,509,684 5.25 4.89 5.24 1,395,186 5.43 4.98 5.40 1,493,166 5.06 5.15 4.99 2,106,381 5.22 4.86 5.21 1,416,782 4.68 4.97 4.68 296,690 5.13 5.00 5.07 682,315 5.02 5.11 5.08 1,164,518 5.31 5.00 5.25 1,257,375 6.00 5.04 5.93 1,943,896 5.50 5.08 5.43 626,661 5.63 4.98 5.64 1,189,972 5.61 5.00 5.62 1,443,857 5.67 4.89 5.71 1,967,524 4.75 5.06 4.75 1,427,620 6.18 4.98 6.18 335,375 5.28 5.24 5.24 320,180 5.20 4.95 5.21 1,750,140 5.81 5.06 5.74 318,597 5.39 5.04 5.32 1,760,915 5.65 4.94 5.61 1,278,952 5.93 5.02 5.88 EA Job# 0924-208 Page 34 of 44 94.9 2.3 108 1.7 103 0.8 105 0.1 126 1.5 106 1.3 97.4 0.2 106 2.6 93.2 1.0 112 1.2 74.5 2.2 100 0.8 107 0.2 109 0.7 98.2 1.4 107 0.2 94.2 0.0 103 1.2 98.2 1.1 106 1.1 119 1.2 108 1.3 113 0.1 112 0.3 116 0.6 94.0 0.1 124 0.1 101 0.7 105 0.1 115 1.2 107 1.3 115 0.8 118 0.9 Flags pass pass pass pass pass, m pass pass, m pass pass, m pass pass, m pass pass pass pass pass pass pass, m pass, m pass pass pass pass pass pass pass, m pass pass, m pass pass pass pass pass, m EPA Inspection Report - Page 157 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID X100324A_5ppbv TO15 LCS LD 125mL load; Can #C98040; GCMSPrepPg1374; MP1 QcDup Xavier_X100324A_0924-208.v1 X2404417.D 1.000 1.000 2024-10-03 13:29 TO15_SCNV6.M Air X100324A_5ppbv TO15 LCS X100324A_5ppbv TO15 LCS LD Target Compound Carbon tetrachloride Benzene 2,2,4-trimethylpentane 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane Methyl methacrylate 1,4-Dioxane Bromodichloromethane cis-1,3-Dichloropropene Methyl isobutyl ketone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone (Methyl butyl ketone) Dibromochloromethane 1,2-Dibromoethane Chlorobenzene Ethylbenzene 1,1,1,2-Tetrachloroethane m-/p-Xylenes o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane 4-Ethyltoluene 2-Chlorotoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Response Concentration Expected Parent Recovery Diff (ppbv) Conc (ppbv) Conc (ppbv) (%) (%) 1,974,408 5.65 5.18 5.61 2,123,702 5.32 4.95 5.29 4,079,101 5.81 5.09 5.78 1,302,958 6.09 5.06 5.94 782,588 5.59 5.00 5.56 1,128,822 4.79 5.05 4.74 928,879 5.59 4.94 5.61 789,496 5.66 5.14 5.63 484,586 5.27 4.93 5.27 1,865,582 5.78 4.83 5.72 1,219,232 5.05 4.87 4.96 2,406,750 5.43 5.14 5.44 2,934,790 5.41 5.00 5.34 1,338,160 5.43 5.04 5.33 1,003,388 5.26 4.98 5.25 1,652,163 5.25 5.02 5.14 2,336,181 5.58 5.07 5.57 2,221,488 5.55 5.00 5.46 1,813,281 5.40 5.04 5.29 2,419,567 5.09 5.04 5.08 3,735,210 5.28 4.89 5.15 1,469,244 5.24 5.08 5.21 2,957,760 5.53 5.09 5.42 2,967,562 5.32 5.01 5.29 2,305,312 5.26 4.80 5.26 2,466,447 5.89 4.96 5.81 2,340,748 5.50 4.97 5.49 4,350,381 5.43 4.84 5.44 3,790,304 5.72 5.00 5.67 3,677,356 5.53 4.99 5.46 3,557,310 5.24 4.87 5.23 2,868,197 5.21 5.00 5.14 2,907,929 5.18 5.02 5.20 EA Job# 0924-208 Page 35 of 44 109 0.7 108 0.6 114 0.5 120 2.6 112 0.5 94.8 1.1 113 0.2 110 0.4 107 0.1 120 1.2 104 1.8 106 0.2 108 1.3 108 1.8 106 0.2 105 2.1 110 0.1 111 1.6 107 1.9 101 0.2 108 2.4 103 0.5 109 1.9 106 0.6 109 0.0 119 1.4 111 0.3 112 0.2 115 0.9 111 1.3 108 0.2 104 1.2 103 0.3 Flags pass pass, m pass, m pass pass, m pass pass pass, m pass pass pass pass, m pass pass pass pass pass, m pass pass, m pass pass pass pass pass pass pass pass pass pass pass pass pass pass EPA Inspection Report - Page 158 of 170 Enthalpy Analytical Job No.: 0924-208-1 EPA Method TO-15 Analysis -- Runs Dow Chemical Company PROJ-046250 Dole SCO-St. Charles, LA Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID X100324A_5ppbv TO15 LCS LD 125mL load; Can #C98040; GCMSPrepPg1374; MP1 QcDup Xavier_X100324A_0924-208.v1 X2404417.D 1.000 1.000 2024-10-03 13:29 TO15_SCNV6.M Air X100324A_5ppbv TO15 LCS X100324A_5ppbv TO15 LCS LD Target Compound Benzyl chloride 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Naphthalene 1-Bromopropane 1-Octene n-Octane Isopropylbenzene n-Propylbenzene Response Concentration Expected Parent Recovery Diff (ppbv) Conc (ppbv) Conc (ppbv) (%) (%) 3,361,003 5.69 2,820,265 5.32 2,465,915 5.38 2,271,375 5.69 5,159,370 4.91 1,616,519 5.19 600,998 5.41 795,734 5.40 4,222,001 5.21 5,097,028 5.60 4.96 5.66 115 0.6 5.00 5.23 106 1.7 4.88 5.23 110 2.8 4.95 5.65 115 0.7 5.00 4.82 98.4 1.9 4.90 5.18 106 0.3 4.88 5.37 111 0.7 5.02 5.38 107 0.3 5.04 5.17 103 0.8 5.00 5.56 112 0.7 Flags pass pass pass pass pass pass pass, m pass, m pass pass Compound Bromochloromethane (IS) 1,4-Difluorobenzene (IS) Chlorobenzene-d5 (IS) Response 868,069 3,187,825 2,719,824 Retention Time (min) 10.99 12.41 16.54 Concentration (ppbv) 5.21 5.16 4.92 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Flag pass, m pass pass EA Job# 0924-208 Page 36 of 44 EPA Inspection Report - Page 159 of 170 Narrative Summary EA Job# 0924-208 Page 37 of 44 EPA Inspection Report - Page 160 of 170 Enthalpy Analytical Narrative Summary Company Analyst Parameters Dow Chemical Company TDD EPA Method TO-15 Client # Job # # Samples Dole SCO - St. Charles, LA PROJ-046250 0924-208 (6L) Canisters Custody Alyssa Miller received the samples on 10/3/2024 after being relinguished by Dow Chemical Company. The samples were received at ambient temperature and in good condition. Prior to, during, and after analysis, the samples were kept under lock with access only to authorized personnel by Enthalpy Analytical, LLC. Analysis The samples were analyzed for the TO-15 target compound list using the analytical procedures in EPA Method TO-15, Determination of Volatile Organic Compounds (VOCs) In Air Collected In Specially-Prepared Canister And Analyzed by Gas Chromatography/Mass Spectrometry (GC/MS). Upon receipt, the canister pressures was measured and recorded. The canisters were then pressurized with UHP nitrogen and dilution ratios were calculated. See the Canister Pressurization Data sheet located in the Results section of this report. All samples were analyzed undiluted. Sample #6 OldTar Pot Lvl3 was analyzed at a subsequent 20-fold analytical dilution in order to bring benzene, propylene, and 1,3-butadiene into the instrument's calibration range. Dilution factors are displayed in the sample header. The Agilent Technologies Model 6890N, Gas Chromatograph "Xavier" (S/N US10721018) equipped with a 5975C VL Mass Selective Detector (S/N US71215962) was used for this analysis. The sample and standards were introduced directly to the analyzer using an Entech 7200 Preconcentrator. Calibration The BFB tune analyses associated with the initial and continuing calibrations met all method acceptance criteria. The initial calibration (X100722A_TO15) met the 30% RSD criteria. The initial calibration verification (ICV) met the 70-130% recovery criteria. The continuing calibration (CCV) met the 30% difference criteria. Chromatographic The acquisition method (TO15_SCNV6) may be made available upon Conditions request. EA Job# 0924-208 Page 38 of 44 EPA Inspection Report - Page 161 of 170 Enthalpy Analytical Narrative Summary (continued) QC Notes Reporting Notes All internal standard area (IS) responses and retention time criteria were met for this analysis. The Laboratory Duplicate (LD) associated with this sample set met the 25% difference criteria for all reported compounds above the LOQ. The LCS was also analyzed in duplicate and met the 25% difference criteria for all compounds. The laboratory humid blank associated with this analysis did not contain any of the target analytes at a concentration greater than 3x their MDL. The Laboratory Control Sample (LCS) met the 70-130% recovery criteria for all reported compounds. The samples were analyzed within the 30-day holding time required by the method. The analysis met the requirements of the TNI Standard. Any deviations from the requirements of the reference method or TNI Standard have been stated above. The results presented in this report are representative of the samples as provided to the laboratory. EA Job# 0924-208 Page 39 of 44 EPA Inspection Report - Page 162 of 170 General Reporting Notes The following are general reporting notes that are applicable to all Enthalpy Analytical, LLC data reports, unless specifically noted otherwise. Any analysis which refers to the method as "Type" represents a planned deviation from the reference method. For instance a Hydrogen Sulfide assay from a Tedlar bag would be labeled as "EPA Method 16-Type" because Tedlar bags are not mentioned as one of the collection options in EPA Method 16. The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory cannot determine the presence of the analyte of interest reliably. The acronym LOQ represents the Limit of Quantification. Below this value the laboratory cannot quantitate the analyte of interest within the criteria of the method. The acronym ND following a value indicates a non-detect or analytical result below the MDL. The letter J in the Qualifier or Flag column in the results indicates that the value is between the MDL and the LOQ. The laboratory can positively identify the analyte of interest as present, but the value should be considered an estimate. The letter E in the Qualifier or Flag column indicates an analytical result exceeding 100% of the highest calibration point. The associated value should be considered as an estimate. Sample results are presented `as measured' for single injection methodologies, or an average value if multiple injections are made. If all injections are below the MDL, the sample is considered non-detect and the ND value is presented. If one, but not all, are below the MDL, the MDL value is used for any injections that are below the MDL. For example, if the MDL is 0.500 and LOQ is 1.00, and the instrument measures 0.355, 0.620, and 0.442 - the result reported is the average of 0.500, 0.620, and 0.500 - - - i.e. 0.540 with a J flag. When a spike recovery (Bag Spike, Collocated Spike Train, or liquid matrix spike) is being calculated, the native (unspiked) sample result is used in the calculations, as long as the value is above the MDL. If a sample is ND, then 0 is used as the native amount (not the MDL value). The acronym DF represents Dilution Factor. This number represents dilution of the sample during the preparation and/or analysis process. The analytical result taken from a laboratory instrument is multiplied by the DF to determine the final undiluted sample results. The addition of MS to the Sample ID represents a Matrix Spike. An aliquot of an actual sample is spiked with a known amount of analyte so that a percent recovery value can be determined. The MS analysis indicates what effect the sample matrix may have on the target analyte, i.e. whether or not anything in the sample matrix interferes with the analysis of the analyte(s). EA Job# 0924-208 Page 40 of 44 EPA Inspection Report - Page 163 of 170 General Reporting Notes (continued) The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the same manner as a MS, the use of duplicate matrix spikes allows further confirmation of laboratory quality by showing the consistency of results gained by performing the same steps multiple times. The addition of LD to the Sample ID represents a Laboratory Duplicate. The analyst prepares an additional aliquot of sample for testing and the results of the duplicate analysis are compared to the initial result. The result should have a difference value of within 10% of the initial result (if the results of the original analysis are greater than the LOQ). The addition of AD to the Sample ID represents an Alternate Dilution. The analyst prepares an additional aliquot at a different dilution factor (usually double the initial factor). This analysis helps confirm that no additional compound is present and coeluting or sharing absorbance with the analyte of interest, as they would have a different response/absorbance than the analyte of interest. The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the client sample matrix, prepared and analyzed by the laboratory using the same reagents, spiking standards and procedures used for the client samples. The LCS is used to assess the control of the laboratory's analytical system. Whenever spikes are prepared for our client projects, two spikes are retained as LCSs. The LCSs are labeled with the associated project number and kept in-house at the appropriate temperature conditions. When the project samples are received for analysis, the LCSs are analyzed to confirm that the analyte could be recovered from the media, separate from the samples which were used on the project and which may have been affected by source matrix, sample collection, and/or sample transport. Significant Figures: Where the reported value is much greater than unity (1.00) in the units expressed, the number is rounded to a whole number of units, rather than to 3 significant figures. For example, a value of 10,456.45 ug catch is rounded to 10,456 ug. There are five significant digits displayed, but no confidence should be placed on more than two significant digits. In the case of small numbers, generally 3 significant figures are presented, but still only 2 should be used with confidence. Many neat materials are only certified to 3 digits, and as the mathematically correct final result is always 1 digit less than all its pre-cursors - 2 significant figures are what are most defensible. Manual Integration: The data systems used for processing will flag manually integrated peaks with an "M". There are several reasons a peak may be manually integrated. These reasons will be identified by the following two letter designations on sample chromatograms, if provided in the report. The peak was not integrated by the software "NI", the peak was integrated incorrectly by the software "II" or the wrong peak was integrated by the software "WP". These codes will accompany the analyst's manual integration stamp placed next to the compound name on the chromatogram. EA Job# 0924-208 Page 41 of 44 EPA Inspection Report - Page 164 of 170 Sample Custody EA Job# 0924-208 Page 42 of 44 EPA Inspection Report - Page 165 of 170 EA Job# 0924-208 Page 43 of 44 EPA Inspection Report - Page 166 of 170 This Is The Last Page Of This Report. EA Job# 0924-208 Page 44 of 44 EPA Inspection Report - Page 167 of 170 UCC Summa Canister Locations September 26-27, 2024 Sample #5 Sample #6 Sample #4 Sample #3 Sample #2 Sample #1 Sample #1 Sample #2 Sample #3 Sample #4 Sample #5 Sample #6 South of North Aeration Pond North of North Aeration Pond Tank T-8302 (hatch top of tank) Tank T-1401 (hatch top of tank) Olefins 1 FGC Discharge Drum - Sewer Hub Olefins 1 - Old Tar Pot (Regulator - 3rd level) # General Business EPA Inspection Report - Page 168 of 170 Union Carbide Corporation / St. Charles Operations Inspection Date 09/23-25/2024 Appendix 10 RCRA Records Request EPA Inspection Report - Page 169 of 170 From: To: Cc: Subject: Date: Penland, John pspeyrer@dow.com Pandak, Debra (she/her/hers); McCarthy, Colleen (she/her/hers) Sept. 24-25, 2024-Inspection Summary and Information Request for DOW St Charles Operations (EPAID:LAD041581422) Tuesday, October 1, 2024 4:36:00 PM All, Here is a summary of my notes from last week's inspection. If there are any errors or omissions, please let me know. Introduction On September 24 and 25, 2024, I, John Penland, conducted an unannounced inspection of the Dow St. Charles facility and collocated Vopak Terminal located at 355 Highway 3142, Hahnville, LA 70057 for compliance with the Resource Conservation and Recovery Act (RCRA). This inspection focused on the generation and management of the wastewater generated by operations at the two facilities and was conducted in conjunction with a parallel Clean Air Act inspection. Daily Summary Initial Entry to the facility - September 24, 2024, at approximately 9:00am I presented my credentials to Mr. Philip Speyrer and informed him that I was there to conduct an inspection of the facility under the authority of section 3007 of the Resource Conservation and Recovery Act. RCRA Section 3007 - For purposes of developing or assisting in the development of any regulation or enforcing the provisions of this chapter, any person who generates, stores, treats, transports, disposes of, or otherwise handles or has handled hazardous wastes shall, upon request of any officer, employee or representative of the Environmental Protection Agency, duly designated by the Administrator, or upon request of any duly designated officer, employee or representative of a State having an authorized hazardous waste program, furnish information relating to such wastes and permit such person at all reasonable times to have access to, and to copy all records relating to such wastes. For the purposes of developing or assisting in the development of any regulation or enforcing the provisions of this chapter, such officers, employees or representatives are authorized-- (1)to enter at reasonable times any establishment or other place where hazardous wastes are or have been generated, stored, treated, disposed of, or transported from; (2)to inspect and obtain samples from any person of any such wastes and samples of any containers or labeling for such wastes. Discussed the right of DOW to assert a Confidential Business Information claim for records requested by EPA. Facility Walkthrough - Following my meeting with Mr. Speyrer, I began my walkthrough of the facility with the two Olefins units. This was followed by inspection of the 1300 series tanks, the Barge Dock, the 6200 tank, and the 5101 tank. Applicability of 268 standards EPA Inspection Report - Page 170 of 170 During this inspection I assessed the applicability of the 40 CFR 268.40 treatment standards to the wastewaters generated by Dow St. Charles. Initially, I believed that the presence of the surface impoundment in the WWTU might affect the applicability treatment standards and the dilution prohibition. However, upon further review, footnote 8 of the table found in 40 CFR 268.40 clarifies the applicability of the treatment standards by citing to the exemption located at 268.1(c)(4). Request for information: Based on my preliminary observations, EPA will require additional information to complete its assessment of the wastewaters generated by DOW St. Charles. A. For each wastewater stream treated in the following units: OLE1-PWS DA-1463; OLE-2 PWS DA-3106; #3WWS DA-116; East WWS DA-118; and West WWS DA-119 1. Identify the point of generation of the waste. 2. Provide waste determination documentation consistent with the requirements of 40 CFR 262.11 at the waste's point of generation and where any subsequent management may have altered the waste's properties. 3. For any claims of exemption under 40 CFR 261.2 (c)(3) or 40 CFR 261.4, provide a written explanation of the applicability of that exemption. B. For the 1300 series tanks 1. Identify the dates for any change of the materials stored in those tanks. Where documents presented to the EPA as part of the concurrent Clean Air Act inspection address this request, a duplicate is not necessary. Simply provide reference to the responsive document. During the closing meeting of this inspection, we scheduled a meeting on October 8, 2024, to review the information provided as a response to this request. However, if you believe you will require additional time to prepare this response, I am open to rescheduling that meeting. Thank you for your time and consideration. John Penland Sr. Environmental Scientist Enforcement and Compiance Assurance Division (ECAD) United States Environmental Protection Agency - Region 6 1201 Elm Street, Suite 500, Dallas, TX 75270 214-665-9717 Penland.john@epa.gov