Document evND26Jn6zRLZmyB3yOqebVDy

Interview Start Date/Time Interview Finish Date/Time Weather Media Statute(s)/Program(s) Type of Inspection EPA Region 5 Enforcement and Compliance Assurance Division INDUSTRIAL USER PRETREATMENT SCREENING INTERVIEW REPORT 4/22/25, 2:00 4/22/25, 2:30 AM PM CT ET | AM PM CT ET | Water Clean Water Act, National Pollutant Discharge Elimination System (NPDES) Industrial User Screening Inspection (Pretreatment Direct Implementation) Facility or Site Name Facility/Site Physical Address City, State, Zip Code County/Borough/Parish Facility GPS Coordinates Mailing Address (If Different) City, State, Zip Code Owner (If Different from Facility) Operator (If Different from Owner) Address City, State, Zip Code Serviced by WWTP? / Lead Interviewer Name: Newton Ellens Region: EPA Region 5 Email: ellens.newton@epa.gov Phone: 312-353-5562 Signature & Date: NEWTON ELLENS Digitally signed by NEWTON ELLENS Date: 2025.05.12 09:31:25 -05'00' Welsch Ready Mix, Inc. 10175 Vans Dr. Frankfort, IL 60423 Will N/A N/A N/A N/A N/A N/A yes Supervisor Review Name: Molly Smith Region: EPA Region 5 Email: smith.molly@epa.gov Phone: 312-353-8773 Signature & Date: MOLLY SMITH Digitally signed by MOLLY SMITH Date: 2025.05.13 08:43:26 -05'00' Welsch Ready Mix, Inc. Interview Date: 4/22/25 SECTION I - INTRODUCTION Site Entry/Opening Conference and Inspection Objectives EPA Region 5 Inspector(s) Newton Ellens and Tatiana Frontera arrived at Welsch Ready Mix, Inc. (the "Facility"), located at 10175 Vans Dr. on March 7, 2025, for an unannounced inspection. There, Mr. Ellens presented his credentials to Facility representatives. The Facility representatives stated that David Johnson, the environmental contact, was not present at the time. Mr. Ellens later made arrangements to interview Mr. Johnson via telephone on April 22, 2025. On April 22, 2025, at 2:00 p.m. CT, Mr. Ellens called Mr. Johnson to conduct the interview. EPA Region 5 Lead Inspector Newton Ellens Informed the Facility that this was a US EPA Region 5 Industrial User Screening Interview to gather Facility information, including on its industrial process and wastewater management as authorized by Clean Water Act (CWA) Section 308 and implementing regulations. Discussed the right to claim Confidential Business Information (CBI) on any document or information shared with EPA during or after the inspection. Mr. Ellens conducted an opening conference with the Facility representatives (See table below) explaining the information gathering checklist. This report is based on information gathered prior to, during, or subsequent to the interview. The information was either supplied by the Facility or obtained through records and reports maintained by the Facility and Region 5. Records and reports may include verbal or written statements provided by the Facility, materials, process information, data, or other documents shown, demonstrated, or submitted to the EPA Region 5 inspectors. In addition, information gathered from EPA, State, and/or public records may be included in this report. Attendees (US EPA, Facility, State, Local) Organization Attendee Name EPA Region 5 Newton Ellens Welsch Ready David Johnson Mix, Inc. Title Lead Inspector Environmental Manager Contact Information Email ellens.newton@epa.gov 312-353-5562 djohnson@welschrm.com 708-710-0719 Present at Opening Conference yes yes Present at Closing Conference yes yes 2 Welsch Ready Mix, Inc. Interview Date: 4/22/25 SECTION II - INDUSTRIAL USER SCREENING CHECKLIST SECTION II.A - Business Activity/Category 1. Provide a brief general description of all operations at this facility (detailed process unit information noted in Section II.F). Ready mix concrete production for construction 2. Does the Facility have an available process diagram, flow diagram, and/or general facility diagram that can be viewed by the inspectors? Yes No 3. If the facility employs or will be employing processes in any of the industrial categories or business activities listed below (regardless of whether they generate wastewater, waste sludge, or hazardous waste), place a check beside that category or business activity. Check all that apply. Airport Deicing Leather Tanning and Finishing Aluminum Forming Meat and Poultry Products Asbestos Manufacturing Metal Finishing Battery Manufacturing Metal Molding and Casting (Foundries) Canned and Preserved Fruit and Vegetable Processing Metal Products and Machinery Canned and Preserved Seafood Processing Mineral Mining and Processing Carbon Black Manufacturing Nonferrous Metals Forming Cement Manufacturing Nonferrous Metals Manufacturing Centralized Waste Treatment Oil and Gas Extraction Coal Mining Ore Mining and Dressing Coil Coating Organic Chemicals, Plastics, and Synthetic Fibers Concentrated Animal Feeding Operation and Feedlots Paint Formulating Concentrated Aquatic Animal Production Paving and Roofing Manufacturing Construction and Development Pesticide Chemicals Copper Forming Petroleum Refining Dairy Product Processing or Manufacturing Pharmaceutical Manufacturing Dental Office Phosphate Manufacturing Electrical and Electronic Components Manufacturing Photographic Processing Electroplating Plastics Molding and Forming Explosives Manufacturing Porcelain Enameling Fertilizer Manufacturing Pulp, Paper, and Paperboard Manufacturing Ferroalloy Manufacturing Rubber Manufacturing Glass Manufacturing Soap and Detergent Manufacturing 3 Welsch Ready Mix, Inc. Interview Date: 4/22/25 SECTION II.A - Business Activity/Category (Continued) Grain Mills Gum and Wood Chemicals Manufacturing Hospital Ink Formulating Inorganic Chemicals Manufacturing Iron and Steel Manufacturing Landfill Steam Electric Power Generating Sugar Processing Textile Mills Timber Products Transportation Equipment Cleaning Waste Combustors Other: 4. Date of Facility Construction: 1995 (est.) Start Date of Current Operations or Date(s) of Significant N/A Process Changes: Date of Last Facility Ownership Change(s): 2001 Section II.B - Facility Sewer Information 1. a. Is the facility connected to a public or private sanitary sewer system? Yes (Private) Yes (Public) No b. IF YES: Are any process wastewater streams discharged directly to the public or private sewer system? Yes No c. IF YES: Does the facility have a permit with a Publicly Owned Treatment Works (POTW) or are they a copermittee on a permit to discharge process wastewater to the public sewer system? Yes No N/A 2. a. Is there an on-site treatment system for process wastewater? Yes No (IF YES: Also See Section II.H) IF YES: b. Does the on-site treatment system effluent discharge to the public sewer system? Yes No c. Does the on-site treatment system effluent discharge to a surface waterbody? Yes No d. Does the facility have a permit to discharge the effluent directly to a waterbody? Yes No Permit Number(s): 3. List the location and average flow of each discharge pipe that connects to the sanitary sewer system. Location of Sewer Connection unknown Average Flow (gpd) 4 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section II.C - Facility Operational Characteristics 1. Hours of Operation: Shift Information Mon Tue Wed Thu Shifts Per Workday 1 1 1 1 Fri Sat Sun 1 varies 2. Indicate whether the business activity is: Continuous throughout the year Seasonal Months in operation: J F M A M J J A S O N D 3. Indicate whether the facility discharge is: Continuous throughout the year Seasonal Months when discharges occur: J F M A M J J A S O N D 4. List types and amounts (mass or volume per day) of raw materials used or planned for use: Raw Material Amount (yearly) Stone Sand 31,512 tons 25,215 tons 5. List types and quantities (mass or volume per day) of chemicals used or planned for use: Chemical WR Grace: WRDA 82, ZYLA 630, MIRA 110, AIRALON 7000, Recover, Daraset 442 Master Builders: Masterpel 2000 HD unknown unknown Quantity 6. Were copies requested of the process diagram, flow diagram, and/or general facility diagram? Yes No 5 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section II.D - Spill Prevention 1. Does the facility have liquid storage containers onsite (tanks, drums, totes, bins, ponds, etc.)? Yes No List Types: Fuel 2. Does the facility have floor drains in the manufacturing area or where liquids are stored? Yes No IF YES: Describe where they drain to: Drains (catch basins) lead to onsite containment. A minimal amount of process wastewater is generated on site. This wastewater evaporates and otherwise is not discharged from the facility. 3. Could an accidental spill at the facility lead to any of the following discharges? Check all that apply. On-site disposal/treatment system Ground (outside) Public sanitary sewer system Floor (inside) Storm drain Other Specify: 4. Does facility have a spill prevention plan to prevent spills of liquids from entering the Control Authority's collection/sewer system? Yes No N/A (No potential for spill to discharge to public sewer/collection system) Section II.E - Water Supply 1. Water Source: Municipal Water Utility: Specify: Private Well Surface Water Other: Specify: 2. Provide the following information for all water usage at the facility: Type of Water Use Sanitary Average Water Usage (gpd) unknown Non-contact cooling water Boiler feeding Process Equipment/facility washdown Contact cooling water Air pollution control Irrigation and lawn watering Contained in product Other: Concrete manufacturing and facility washdown unknown Total: Estimated or Measured 6 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section II.F - Wastewater Discharge Information 1. Provide the following information for all wastewater generated (gallons per day - GPD) at the facility: Type of Wastewater Average Volume Maximum Volume (GPD) (GPD) Estimated or Type of Measured Discharge Where Discharges To Sanitary unknown Non-contact cooling water Boiler blowdown Equipment/facility washdown Contact cooling water Air pollution control Stormwater runoff Process wastewater Use Table Below (II.F - 2) Other: Other: 2. Provide the following information for process wastewater generated by each unit process: Unit Process Description Concrete manufacturing and facility washdown Average Volume Maximum Volume (GPD) (GPD) Estimated or Measured Type of Discharge Where Discharges To A minimal amount of process wastewater is generated on site. This wastewater evaporates and otherwise is not discharged from the facility. 3. Do batch discharges to the sanitary sewer system occur (or will occur)? Yes No Number of batch discharges per time period (specify per day, week, month, etc.): N/A Average volume per batch discharge (gal): N/A Flow rate (GPM): N/A 7 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section II.F - Wastewater Discharge Information (Continued) 4. a. Does the facility have (or plan to have) continuous wastewater flow metering equipment? Yes No b. Does the facility sample wastewater? Yes No IF YES: c. Are Grab Samples Collected? Yes No d. Are Composite Samples Collected? Yes No e. Are there plans to add sampling activities for process wastewater? Yes No f. Describe the present or planned future location(s) for process wastewater sampling and describe the equipment used to sample (i.e. auto samplers/manual collection): N/A 5. Describe the flow rates for discharge of process wastewater to the sanitary sewer system: N/A Average Daily Flow Rate (GPD)): Maximum Daily Flow Rate (GPD): Hours per day of process wastewater discharge to sanitary sewer system: (e.g., 8): Mon Tue Wed Thu Fri Sat Sun 6. Has the discharge at this facility changed historically? Yes No N/A IF YES: Briefly describe these changes and their effects on the wastewater volume and characteristics: 7. Are there any wastewater recycling or reclamation systems in use or planned? Yes No IF YES: Briefly describe the recovery process, substance recovered, percent recovered, and the concentration in the spent solution: Facility washwater may be recycled. 8 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section II.G - Slug Discharge Control 1. Do you have the potential for a slug discharge to the sewer system? Yes No A slug discharge is any discharge of a non-routine episodic nature, including but not limited to an accidental spill or a non-customary batch discharge, which has a reasonable potential to cause interference or pass-through, or in any other way violate the POTW's regulations, local limits, or permit conditions [40 CFR 403.8(f)(2)(v)]. 2. IF YES: Describe the type of potential slug discharge including quality and content: N/A 3. Describe the current mechanisms for prevention of slug discharges. N/A Section II.H - Treatment 1. Is any form of process wastewater treatment (see list below) used at this facility? Yes No IF YES: Place a check beside the treatment devices or processes that are used (or will be used) for treating wastewater or sludge at this facility. Check all that apply. Air flotation Centrifuge Chemical precipitation Chlorination Cyclone Filtration Flow equalization Grease or oil separation Biological treatment: Specify Other chemical treatment: Specify Other physical treatment: Specify Other: Specify Grease trap Grinding filter Grit removal Ion exchange Neutralization, pH correction Ozonation Reverse osmosis Screen Sedimentation Septic tank Solvent separation/recovery Spill protection Sump Rainwater diversion or storage 9 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section II.H - Treatment (Continued) 2. Do you have a treatment operator(s)? Yes No N/A IF YES: Provide the following information: Name: Operator Class/Type: Title: Hours: Phone: Name: Operator Class/Type: Title: Hours: Phone: Name: Operator Class/Type: Title: Hours: Phone: Name: Operator Class/Type: Title: Hours: Phone: 3. Is any form of wastewater treatment (or changes to existing wastewater treatment) planned for this facility within the next three years? Yes No IF YES: Describe any changes in treatment or disposal methods planned or under construction for the wastewater Section II.I - Non-Discharged Wastes 1. Are any waste liquids or sludges generated and not disposed of in the sanitary sewer system? Yes No IF NO: Skip the remainder of Section II.I. IF YES: List in the table below: Waste Generated Quantity (per year) Disposal Method 2. Describe where and how waste liquids and sludges are stored prior to disposal. 10 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section II.I - Non-Discharged Wastes (Continued) 3. If any facility wastes are sent to an off-site centralized waste treatment facility, identify the facility and the wastes that it receives: N/A 4. If an outside firm removes any of the wastes, list the name, address, and permit number of all waste haulers: N/A Name Address Permit Number (if applicable) 5. Have you been issued any federal, state, or local environmental permits? Yes No IF YES: List the permits: Air permit (Ross) Stormwater permit (ILR 005281) 11 Welsch Ready Mix, Inc. Interview Date: 4/22/25 Section III - Closing Conference and Follow Up Closing Conference The EPA Region 5 Lead Inspector, Newton Ellens, held a closing conference with David Johnson at 2:30 p.m. on April 22, 2025. During the closing conference, Mr. Ellens restated the purpose of the inspection and explained that a copy of the final inspection checklist will be provided to the Facility. Facility representative made a claim of CBI during the inspection: Yes No Name/Title of Facility Representative making the CBI claim: Requested Documents During the interview, EPA requested the following information: Reference Number CC-001 CC-002 CC-003 CC-004 CC-005 Date Requested Description 4/22/25 4/22/25 4/22/25 4/22/25 4/22/25 Process flow diagram Type and amounts of raw materials used annually, Type and quantities of chemicals used annually Amount of water used for facility washdown Ross air permit number Section IV List of Appendices A. Process Map B. Water Bill for 10175 Vans Drive (bill date: 10/15/24) C. Ross air permit 12