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Fact Sheet for NPDES Permit Renewal, ArcelorMittal Cleveland, Inc., 2017

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National Pollutant Discharge Elimination System (NPDES) Permit Program

FACT SHEET

Regarding an NPDES Permit To Discharge to Waters of the State of Ohio for ArcelorMittal Cleveland, Inc.

Public Notice No.: 17-10-008 Ohio EPA Permit No.: 3ID00003*PD Public Notice Date: October 5, 2017 Application No.: OH0000957 Comment Period Ends: November 4, 2017 Name and Address of Facility Where Name and Address of Applicant: Discharge Occurs: Arcelor Mittal Cleveland, Inc. ArcelorMittal Cleveland, Inc. 3060 Eggers Avenue 3060 Eggers Avenue Cleveland, OH 44105 Cleveland, OH 44105 Cuyahoga County Receiving Water: Cuyahoga River Subsequent Stream Network: Lake Erie INTRODUCTION Development of a Fact Sheet for NPDES permits is mandated by Title 40 of the Code of Federal Regulations (CFR), Section 124.8 and 124.56. This document fulfills the requirements established in those regulations by providing the information necessary to inform the public of actions proposed by the Ohio Environmental Protection Agency (Ohio EPA), as well as the methods by which the public can participate in the process of finalizing those actions. This Fact Sheet is prepared in order to document the technical basis and risk management decisions that are considered in the determination of water quality based NPDES Permit effluent limitations. The technical basis for the Fact Sheet may consist of evaluations of promulgated effluent guidelines, existing effluent quality, instream biological, chemical and physical conditions, and the relative risk of alternative effluent limitations. This Fact Sheet details the discretionary decision-making process empowered to the Director by the Clean Water Act (CWA) and Ohio Water Pollution Control Law (Ohio Revised Code [ORC] 6111). Decisions to award variances to Water Quality Standards (WQS) or promulgated effluent guidelines for economic or technological reasons will also be justified in the Fact Sheet where necessary. In accordance with the antidegradation rule, Ohio Administrative Code (OAC) 3745-1-05, it has been determined that a lowering of water quality in the Cuyahoga River is necessary. Provisions from OAC 3745-1-05(D)(1) and Section 301(g) of the CWA were applied to this application. These provisions exclude the need for the submittal and subsequent review of technical alternatives and social and economic issues related to the degradation. Other rule provisions, however, including public participation and appropriate intergovernmental coordination were required and considered prior to reaching this decision. Effluent limits based on available treatment technologies are required by Section 301(b) of the CWA. Many of these have already been established by the United States Environmental Protection Agency (U.S. EPA) in the effluent guideline regulations (a.k.a. categorical regulations) for industry categories in 40 CFR Parts 405-499. Technology-based regulations for publicly-owned treatment works are listed in the Secondary Treatment


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Regulations (40 CFR Part 133). If regulations have not been established for a category of dischargers, the director may establish technology-based limits based on best professional judgment (BPJ). Ohio EPA reviews the need for water-quality-based limits on a pollutant-by-pollutant basis. Wasteload allocations (WLAs) are used to develop these limits based on the pollutants that have been detected in the discharge, and the receiving water’s assimilative capacity. The assimilative capacity depends on the flow in the water receiving the discharge, and the concentration of the pollutant upstream. The greater the upstream flow, and the lower the upstream concentration, the greater the assimilative capacity is. Assimilative capacity may represent dilution (as in allocations for metals), or it may also incorporate the break-down of pollutants in the receiving water (as in allocations for oxygen-demanding materials). The need for water-quality-based limits is determined by comparing the WLA for a pollutant to a measure of the effluent quality. The measure of effluent quality is called Projected Effluent Quality (PEQ). This is a statistical measure of the average and maximum effluent values for a pollutant. As with any statistical method, the more data that exists for a given pollutant, the more likely that PEQ will match the actual observed data. If there is a small data set for a given pollutant, the highest measured value is multiplied by a statistical factor to obtain a PEQ; for example if only one sample exists, the factor is 6.2, for two samples - 3.8, for three samples - 3.0. The factors continue to decline as samples sizes increase. These factors are intended to account for effluent variability, but if the pollutant concentrations are fairly constant, these factors may make PEQ appear larger than it would be shown to be if more sample results existed. SUMMARY OF PERMIT CONDITIONS This permit no longer authorizes the use of method 4500 CN-I from Standard Methods for free cyanide testing. As soon as possible, the permittee must begin using either ASTM D7237-10 or OIA-1677-09 both of which are approved methods for free cyanide listed in 40 CFR 136. For all monitoring stations immediately downstream of treated process wastewater, cyanide, lead, and zinc shall be analyzed for the total instead of the total recoverable. This change will ensure compliance with the federal effluent limitation guidelines (ELG) and 40 CFR 420.02 and 40 CFR 433.11. In accordance with 40 CFR 136.3, the analytical methods shall be the same as those for total recoverable metals. For all monitoring stations, total dissolved solids (TDS) shall now be analyzed as total filterable residue instead of total dissolved residue. The terms “TDS” and “total filterable residue” shall be synonymous throughout the rest of this document. Outfall 001 The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: pH and flow rate. Outfalls 002, Internal Monitoring Stations 601 & 602, and Calculated Stations 603 & 693 Outfall 002

The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: pH, oil & grease, TDS, and flow rate. New effluent limits are proposed for lead and zinc to ensure that production rates do not result an exceedance of WQS. A 36-month compliance schedule is included in Part I.C. of this permit for these new effluent limits. Monitoring for these parameters shall occur on a monthly basis.


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New monitoring without limits is proposed for water temperature. Weekly monitoring for water temperature is proposed to document the effects of the water temperature at the receiving stream. As requested by ArcelorMittal, conditions associated with the electrogalvanizing process will be removed from the permit because it is no longer in use. As a result, the condition for increased lead and zinc monitoring during electrogalvanizing discharges will be removed from this monitoring station. In accordance with OAC 3745-33-07, it has been determined that the effluent from Outfall 002 shows acute to Ceriodaphnia dubia (water fleas). Limits and monitoring frequencies are proposed for this species. A toxicity reduction evaluation (TRE) is proposed for C. dubia acute toxicity in Part I.C. For Pimaphales promelas (fathead minnows), the discharge data does not demonstrate reasonable potential. For P. promelas, limits are proposed to be removed while the monitoring frequency decreases from quarterly to annually.

Internal Station 601 The limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: pH, TSS, oil & grease, lead, zinc, flow rate, and TDS. As requested by ArcelorMittal, conditions associated with the electrogalvanizing process will be removed from the permit. As a result, the following conditions will be removed from this monitoring station: monitoring for cyanide, monitoring and limits for total toxic organics (TTO), increased monitoring frequencies during electrogalvanizing discharges, and the monitoring waivers for cadmium, chromium, copper, nickel, and silver.

Internal Station 602 The limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: pH, TSS, oil & grease, zinc, lead, flow rate, and TDS. Monitoring for free cyanide shall be removed from this outfall due to a lack of reasonable potential for exceeding WQS limits at the external outfall 002. As requested by ArcelorMittal, conditions associated with the electrogalvanizing process will be removed from the permit. As a result, the condition for increased monitoring frequencies during electrogalvanizing discharges will be removed from this monitoring station.

Calculated Stations 603 The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: TSS, oil & grease, flow rate, and TDS. Loading limits are generally lower for lead and zinc are proposed to due to changes in production. Monitoring for free cyanide is proposed to be removed from the monitoring requirements because there is no reasonable potential for this pollutant to exceed WQS at the external outfall 002.

Calculated Stations 693 As requested by ArcelorMittal, this outfall is proposed to be removed because the electrogalvanizing process has not been operated since 2006 and there are no plans to resume operation.


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Outfall 005 and Internal Monitoring Station 604 Outfall 005

The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: high water temperature, pH, ammonia, zinc, lead, flow rate, and TDS. New effluent limits are proposed for mercury because data demonstrates a reasonable potential for this parameter to exceed water quality standards. Limits are applied based on mercury variance procedures. The monitoring requirements for this parameter are proposed to continue on a quarterly basis. Although free cyanide monitoring is proposed to continue on a weekly basis without limits, tracking requirements are required for this pollutant if the result exceeds the threshold specified in Part II, Item N. Limits for total residual chlorine are proposed to be removed because recent data demonstrates that the discharge does not contain reasonable potential for this parameter to exceed water quality standards. Monitoring is proposed to continue on a weekly basis.

Internal Station 604

The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: flow rate and pH. As of the public notice date, ammonia limits will be dependent on whether or not ArcelorMittal’s submitted 301(g) ammonia variance application was approved or denied. If approved, ammonia limits will increase based on of the proposed limits within the 301(g) ammonia variance application. If denied, ammonia limits are to remain the same. Loading limits are proposed to increase for TSS, total cyanide, lead, zinc, and phenols. TSS limits are based on BTJ and anti-backsliding procedures. For total cyanide, lead, zinc, and phenols, loading limits are based off of an increased production rate.

Internal Monitoring Station 607 This internal monitoring station has been added to document the mercury within the influent, as required by the variance conditions in OAC 3745-33-07(D)(6)(v). Quarterly monitoring shall occur prior to treatment.

Outfall 014 The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: high water temperature, pH, TSS, ammonia, flow rate, oil and grease, and TDS. Limits for total residual chlorine are proposed to be removed because recent data demonstrates that the discharge does not contain reasonable potential for this parameter to exceed water quality standards. Monitoring is proposed to continue on a weekly basis. Monitoring requirement for zinc is proposed to be removed because recent data shows a low risk of exceeding the WQS. The current permit requires monitoring when discharging noncontact cooling water. The draft permit proposes that monitoring be required regardless of whether noncontact cooling water is discharged.


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Outfall 017 and Internal Monitoring Station 617 Outfall 017

The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: water temperature, flow rate, total residual chlorine, and TDS. New effluent limits are proposed for mercury because data demonstrates a reasonable potential for this parameter to exceed WQS. Limits are based on the procedures for mercury variances. The monitoring requirements for this parameter are proposed continue on a quarterly basis. Lower loading effluent limits are proposed for TSS, oil and grease, lead, and zinc (monthly average) due to a decrease in production over the years. Although the oil and grease loading limits are proposed to decrease, the concentration limits are proposed to continue based on BTJ. Concentration limits for lead and zinc are based on WQS and anti-backsliding regulations, respectively. Quarterly monitoring for free cyanide is proposed based on BTJ. Because monitoring for pH is continuous, new monitoring and limit conditions are being added based on 40 CFR 401.17.

Internal Monitoring Station 617

This internal monitoring station has been added to document the mercury within the influent, as required by the variance conditions in OAC 3745-33-07(D)(6)(v). Quarterly monitoring shall occur prior to treatment.

Outfall 022 and Internal Monitoring Stations 620 and 622 Outfall 022

As requested by the permittee, sampling shall only be required when discharging process wastewater associated with steelmaking operations; if this process wastewater is not discharged through Outfall 022, then the discharge is only limited to stormwater and ground water. The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: water temperature, pH, oil & grease, lead, zinc, flow rate, free cyanide, and TDS. New effluent limits are proposed for mercury because data demonstrates reasonable potential for this parameter to exceed WQS. Limits for mercury are based on variance procedures. Monitoring requirements are proposed to be removed for selenium because data demonstrates that there is low risk of this parameter exceeding WQS. Reduced monitoring frequencies are proposed for total residual chlorine and copper because data demonstrates that there is a low risk of these parameters exceeding water quality standards. Monitoring is proposed on a monthly basis instead of weekly. In accordance with OAC 3745-33-07, it has been determined that the effluent from Outfall 022 shows acute toxicity to Ceriodaphnia dubia (water fleas). A maximum limit of 1.0 TUa is proposed and quarterly monitoring shall continue for this species. For Pimaphales promelas (fathead minnows), the discharge data does not demonstrate reasonable potential. For P. promelas, the monitoring frequency are proposed to from quarterly to annually.


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Internal Monitoring Station 620 This internal monitoring station has been added to document the mercury within the influent, as required by the variance conditions in OAC 3745-33-07(D)(6)(v). Quarterly monitoring shall occur prior to treatment.

Internal Station 622 The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: flow rate, TSS, TDS, and pH. Lower loading limits are proposed for oil and grease while higher loading limits are proposed for lead and zinc. These differences in loadings are due to changes in the production rates and due to WQS limits applied at the internal outfall rather than the external outfall. Monitoring requirements are proposed to be removed for selenium because monitoring of this parameter is not required under the applicable ELGs. In addition, data demonstrates a low risk for selenium to exceed WQS at the final outfall.

Outfalls 023 and Internal Monitoring Stations 613, 633, 643, and 653 Outfall 023

The effluent limits and monitoring requirements proposed for the following parameters are the same as in the previous permit: 5-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD), pH, TSS, oil and grease, ammonia, and TDS. New effluent limits are proposed for zinc because data demonstrates reasonable potential for this parameter to exceed WQS. Based on discharge data, the permittee may need time to adjust to the new limit. Therefore, a 48-month compliance schedule is included in Part I.C. of the permit. Monitoring requirements are proposed to be removed for fluoride because data demonstrates that there is low risk of this parameter exceeding WQS. The sampling type for flow rate shall now be 24-hour total estimate instead of grab to improve the accuracy of data. Monthly monitoring of rainfall is proposed based on BTJ. In addition, annual stormwater monitoring is proposed at this outfall. Annual stormwater parameters include dry days preceding a precipitation event, precipitation, duration of the storm event, cadmium, chromium, copper, lead, and nickel.

Internal Stations 613, 633, 643, and 653 No changes have been made to these outfalls.

Outfall 024 Annual stormwater monitoring is proposed at this outfall. Stormwater parameters added to this outfall include precipitation, dry days preceding the precipitation, duration of the storm event, total filterable residue, total suspended solids, oil & grease, cadmium, chromium, copper, lead, nickel, and zinc. Intake Stations 800, 801, 804, 806, and 808 Monitoring requirements for station 804 is proposed to be added to the permit. For all intake stations, monitoring for flow, ammonia, and water temperature shall now be required year-round. For intake station 801, optional mercury monitoring has been added so that ArcelorMittal can report all voluntary mercury monitoring


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at this intake; this data will be compared with mercury at internal stations 507 to determine how much mercury is contributed by process operations. Non-Process Wastewater Outfalls Monitoring requirements and limits for outfall 008 shall remain unchanged. Monitoring for outfalls 010 and 011 shall be monitored only when discharging process wastewater. The monitoring and reporting requirements for outfalls 016 and 019 have been removed. In addition, monitoring at outfall 004 is proposed to be removed except for stormwater sampling. Monitoring for these outfalls were only required when discharging non-contact cooling water and/or steam condensate. These streams will not be discharged from these outfalls because the electrogalvanizing processes have not operated since 2006 and ArcelorMittal does not have plans to resume operation. At ArcelorMittal’s request, these outfalls have been removed from the permit. Stormwater New monitoring requirements for estimated flow, total precipitation, total dissolved solids, TSS, pH, copper, lead, zinc, and other parameters have been added to the stormwater outfalls. ArcelorMittal has requested that stormwater outfalls be represented by substantially identical stormwater monitoring points. Previously, ArcelorMittal’s representative stormwater outfalls included outfall 002 (finishing mill area), outfall 005 (ironmaking area), outfall 009 (slag processing and former coke plant area) and outfall 024 (steel producing area). In the proposed permit, the representative outfalls have been reassigned to outfalls 004, 009, 021, 023, 024, and 045 are described in Part V.B of the proposed permit. Outfall 045 has been added to the permit as a collection site for stormwater contributing to Outfall 002. Stormwater monitoring at Outfall 002’s monitoring station would not be representative of typical run-off from the area because it includes treated process wastewater. The monitoring requirements for Outfall 015 have been removed from the permit because this outfall is no longer on ArcelorMittal’s property and because a majority of the property historically draining to this outfall is no longer owned by ArcelorMittal. As of September 2017, this outfall is within the property lines of International Bulk Storage Group, LLC. Method Detection Levels To ensure that data is obtained that allows Ohio EPA to make water quality-related decisions regarding free cyanide and total residual chlorine, a special condition is proposed in Part II of the permit that provides guidance on the analytical method detection limits (MDLs) the permittee should use in analyzing for these contaminants. In Part II of the permit, special conditions are included that address storm water compliance; whole effluent toxicity (WET) testing; tracking of group 4 parameters; dissolved metal translator (DMT) study; mercury variance; toxicity reduction evaluation (TRE); pH excursions; cooling water intake structures (CWA section 316(b)); and outfall signage.


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Table of Contents Page INTRODUCTION ......................................................................................................................................... 1

SUMMARY OF PERMIT CONDITIONS ................................................................................................... 2

PROCEDURES FOR PARTICIPATION IN THE FORMULATION OF FINAL DETERMINATIONS 10

LOCATION OF DISCHARGE .................................................................................................................. 13

FACILITY DESCRIPTION ........................................................................................................................ 13

DESCRIPTION OF EXISTING DISCHARGE ......................................................................................... 14

ASSESSMENT OF IMPACT ON RECEIVING WATERS ...................................................................... 16

DEVELOPMENT OF WATER-QUALITY-BASED EFFLUENT LIMITS ............................................. 18

REASONABLE POTENTIAL / EFFLUENT LIMITS / HAZARD MANAGEMENT DECISIONS ....... 21

OTHER REQUIREMENTS ........................................................................................................................ 35

List of Figures Figure 1. Location of ArcelorMittal Cleveland, Inc. ................................................................................... 40

Figure 2. Diagram of Water Flows .............................................................................................................. 41

Figure 3. Treatment System Diagrams ........................................................................................................ 51

Figure 4. Lower Cuyahoga River Study Area ............................................................................................. 59


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List of Tables

Table 1. Monitoring Stations, Treatment Processes, Discharge Points, and Flow Rates ........................... 60

Table 2. Storm Water Outfalls at ArcelorMittal.......................................................................................... 63

Table 3. Effluent Violations for Outfall 017 ............................................................................................... 64

Table 4. Average Annual Effluent Flow Rates ........................................................................................... 65

Table 5. Effluent Characterization Based on Form 2C Data ....................................................................... 69

Table 6. Effluent Characterization Using Self-Monitoring Data ................................................................ 80

Table 7. Projected Effluent Quality ............................................................................................................. 86

Table 8. Summary of Acute and Chronic Toxicity Results ........................................................................ 97

Table 9. Use Attainment Table ................................................................................................................... 98

Table 10. Water Quality Criteria in the Study Area .................................................................................... 99

Table 11. Instream Conditions and Discharger Flow ................................................................................ 102

Table 12. Summary of Effluent Limits to Maintain Applicable Water Quality Criteria .......................... 105

Table 13. Parameter Assessment ............................................................................................................... 114

Table 14. Effluent Limits .......................................................................................................................... 125

List of Attachments

Attachment 1. Applicable Federal Effluent Limitation Guidelines .......................................................... 133

Attachment 2. Calculation of Loading Limits Using Federal Effluent Guidelines ................................... 137

Attachment 3. Implementation of Limits – Water Quality Standards and Effluent Limit Guidelines ...... 142

Attachment 4. Ammonia 301(g) Variance Review ................................................................................... 144

Attachment 5. List of Approved Boiler/Cooling Water System Additives ............................................... 145

Attachment 6. Storm Water Sampling Data .............................................................................................. 152


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PROCEDURES FOR PARTICIPATION IN THE FORMULATION OF FINAL DETERMINATIONS The draft action shall be issued as a final action unless the Director revises the draft after consideration of the record of a public meeting or written comments, or upon disapproval by the Administrator of the U.S. Environmental Protection Agency. Within thirty (30) days of the date of the Public Notice, any person may request or petition for a public meeting for presentation of evidence, statements or opinions. The purpose of the public meeting is to obtain additional evidence. Statements concerning the issues raised by the party requesting the meeting are invited. Evidence may be presented by the applicant, the state, and other parties, and following presentation of such evidence other interested persons may present testimony of facts or statements of opinion. Requests for public meetings shall be in writing and shall state the action of the Director objected to, the questions to be considered, and the reasons the action is contested. Such requests should be addressed to:

Legal Records Section Ohio Environmental Protection Agency

P.O. Box 1049 Columbus, Ohio 43216-1049

Interested persons are invited to submit written comments upon the discharge permit. Comments should be submitted in person or by mail no later than 30 days after the date of this Public Notice. Deliver or mail all comments to:

Ohio Environmental Protection Agency Attention: Division of Surface Water

Permits Processing Unit P.O. Box 1049

Columbus, Ohio 43216-1049 The Ohio EPA permit number and Public Notice numbers should appear on each page of any submitted comments. All comments received no later than 30 days after the date of the Public Notice will be considered. Citizens may conduct file reviews regarding specific companies or sites. Appointments are necessary to conduct file reviews, because requests to review files have increased dramatically in recent years. The first 250 pages copied are free. For requests to copy more than 250 pages, there is a five-cent charge for each page copied. Payment is required by check or money order, made payable to Treasurer State of Ohio. More information regarding this draft permit can be found on Ohio EPA’s website under Discharger-Specific Permit Information: http://www.epa.ohio.gov/dsw/permits/individuals.aspx . For additional information about this fact sheet or the draft permit, contact Phoebe Low, (614) 644-2134, [email protected]. Modification of an Existing Variance for Ammonia The permittee, pursuant to Section 301(g) of the CWA, requested modification of a previously-approved variance for the nonconventional pollutant ammonia. This draft permit contains tentative limits for the modified ammonia variation. Interested persons are invited to submit written comments upon the discharge permit. Comments should be submitted in person or by mail no later than 30 days after the date of this Public Notice. Comments regarding the tentative ammonia violation shall be delivered or mailed to:


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U.S. Environmental Protection Agency

Attention: Water Division (WN-16J) 77 West Jackson Boulevard

Chicago, Illinois 60604

A duplicate copy of these comments shall also be sent to the Ohio EPA:



Columbus, Ohio 43216-1049 The Ohio EPA permit number and Public Notice numbers should appear on each page of any submitted comments. All comments received no later than 30 days after the date of the Public Notice will be considered. Information Regarding Certain Water Quality Based Effluent Limits This draft permit may contain proposed water-quality-based effluent limits (WQBELs) for parameters that are not priority pollutants. (See the following link for a list of the priority pollutants: http://epa.ohio.gov/portals/35/pretreatment/Pretreatment_Program_Priority_Pollutant_Detection_Limits.pdf .) In accordance with ORC 6111.03(J)(3), the Director established these WQBELs after considering, to the extent consistent with the Federal Water Pollution Control Act, evidence relating to the technical feasibility and economic reasonableness of removing the polluting properties from those wastes and to evidence relating to conditions calculated to result from that action and their relation to benefits to the people of the state and to accomplishment of the purposes of this chapter. This determination was made based on data and information available at the time the permit was drafted, which included the contents of the timely submitted NPDES permit renewal application, along with any and all pertinent information available to the Director. This public notice allows the permittee to provide to the Director for consideration during this public comment period additional site-specific pertinent and factual information with respect to the technical feasibility and economic reasonableness for achieving compliance with the proposed final effluent limitations for these parameters. The permittee shall deliver or mail this information to:



Columbus, Ohio 43216-1049 Should the applicant need additional time to review, obtain or develop site-specific pertinent and factual information with respect to the technical feasibility and economic reasonableness of achieving compliance with these limitations, written notification for any additional time shall be sent to the above address no later than 30 days after the Public Notice Date on Page 1. Should the applicant determine that compliance with the proposed WQBELs for parameters other than the priority pollutants is technically and/or economically unattainable, the permittee may submit an application for a variance to the applicable WQS used to develop the proposed effluent limitation in accordance with the terms and conditions set forth in OAC 3745-33-07(D). The permittee shall submit this application to the above address no later than 30 days after the Public Notice Date.


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Alternately, the applicant may propose the development of site-specific WQS pursuant to OAC 3745-1-35. The permittee shall submit written notification regarding their intent to develop site specific WQS for parameters that are not priority pollutants to the above address no later than 30 days after the Public Notice Date.


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LOCATION OF DISCHARGE ArcelorMittal Cleveland, Inc. (ArcelorMittal) discharges to Cuyahoga River between River Miles (RM) 4.70 and 6.81. Figure 1 shows the approximate location of the facility. This segment of the Cuyahoga River is described by Ohio EPA River Code: 19-001, U.S. EPA River Reach Code: 04110002-001, Hydraulic Unit Code (HUC): 04110002-06-05, County: Cuyahoga, Ecoregion: Erie-Ontario Lake Plain. RM 0.00 to 5.60 is considered the Cuyahoga Ship Channel. This part of the Cuyahoga River is designated for the following uses under Ohio’s WQS (OQC 3745-1-26):

Limited Resource Water (LRW) during the months of June through January, and during the remaining months of the year whenever the river flow is less than 703 cubic feet per second (cfs) at the United States Geological Survey (USGS) gage at Independence (#04208000);

Fish Passage Criteria (FPC) during the months of February through May and whenever the river flow at the USGS Independence gage 04208000 is greater than or equal to 703 cfs;

Industrial Water Supply (IWS); and Primary Contact Recreation (PCR).

From RM 5.61 to 6.81, the Cuyahoga River is designated for the following uses under Ohio’s WQS (OAC 3745-1-26): Warmwater Habitat (WWH), Agricultural Water Supply (AWS), IWS, and PCR. Use designations define the goals and expectations of a waterbody. These goals are set for aquatic life protection, recreation use and water supply use, and are defined in the Ohio WQS (OAC 3745-1-07). The use designations for individual waterbodies are listed in rules -08 through -32 of the Ohio WQS. Once the goals are set, numeric WQS are developed to protect these uses. Different uses have different water quality criteria. Use designations for aquatic life protection include habitats for coldwater fish and macroinvertebrates, warmwater aquatic life and waters with exceptional communities of warmwater organisms. These uses all meet the goals of the federal CWA. Ohio WQS also include aquatic life use designations for waterbodies which cannot meet the CWA goals because of human-caused conditions that cannot be remedied without causing fundamental changes to land use and widespread economic impact. The dredging and clearing of some small streams to support agricultural or urban drainage is the most common of these conditions. These streams are given Modified Warmwater or Limited Resource Water designations. Recreation uses are defined by the depth of the waterbody and the potential for wading or swimming. Uses are defined for bathing waters, swimming/canoeing (Primary Contact Recreation) and wading only (Secondary Contact which are generally waters too shallow for swimming or canoeing). Water supply uses are defined by the actual or potential use of the waterbody. Public Water Supply designations apply near existing water intakes so that waters are safe to drink with standard treatment. Most other waters are designated for agricultural water supply and industrial water supply. FACILITY DESCRIPTION ArcelorMittal is an integrated steel mill consisting of iron making (blast furnace), steel making (basic oxygen furnaces), and finishing operations. Below lists the all of the facility’s industrial processes (see Figure 2):

Blast Furnaces Basic Oxygen Furnaces


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Vacuum Degassing Continuous Casting Hot Forming Acid Pickling Cold Rolling Electrogalvanizing (not authorized under this permit) Hot Dip Coating Ancillary Operations

At ArcelorMittal’s request, the permit conditions for the electrogalvanizing process has been removed from this permit. This is warranted because this process has not been in operation since 2006 and the facility has no plans to resume operation. Also, note that cokemaking is not part of the industrial processes at ArcelorMittal. The process operations at ArcelorMittal are classified in the Standard Industrial Classification (SIC) category 3312, “Steel Works, Blast Furnaces, and Rolling Mills”. The process wastewaters generated from these operations are regulated under the following subparts under Title 40 of the Code of Federal Regulations (CFR), Part 420 “Iron and Steel Manufacturing Point Source Category” (Iron & Steel):

40 CFR 420.08, “Non-process wastewater and storm water.” Subpart C, “Ironmaking Subcategory” – Iron Blast Furnace Subpart D, “Steelmaking Subcategory” – Basic Oxygen Furnace Steelmaking Subpart E, “Vacuum Degassing Subcategory” Subpart F, “Continuous Casting Subcategory” Subpart G, “Hot Forming Subcategory” – Flat Mills Subpart I, “Acid Pickling Subcategory” – Hydrochloric Acid Pickling Subpart J, “Cold Forming Subcategory” – Cold Rolling Mills Subpart L, “Hot Coating Subcategory” – Galvanizing, Tern Coating, and Other Coatings

ArcelorMittal obtains water from two sources – the Cuyahoga River and City Water. DESCRIPTION OF EXISTING DISCHARGE Table 1 highlights the primary outfalls, internal monitoring stations, wastewater sources, treatment processes, discharge/receiving streams and associated flows at ArcelorMittal. Water treatment systems are summarized in Figure 3. Storm water outfalls are presented on Table 2. Figure 4 provides a flow schematic of the wastewater sources and supplies associated with ArcelorMittal. The average flow rates for internal and external outfalls are on Table 4. Process wastewater is discharged through outfalls 002, 005, 017, 022, and 023. Outfall 002, Internal Monitoring Stations 601 & 602, and Calculated Stations 603 & 693 Outfall 002 receives treated wastewater from internal outfalls 601 and 602, as well as storm water and groundwater. No additional treatment occurs after monitoring stations 601 and 602. The average design flow rate for outfall 002 is 4.5 MGD. There were two effluent violations at outfall 002 – one for acute toxicity of C. dubia in July 2012 and another for pH in April 2012.

Internal Station 601 The following categorical wastestreams are treated at this outfall: Iron & Steel and Metal Finishing.

84” Hot Strip Mill (Part 420, Subpart G, Hot Forming) 84” Hydrochloric Acid Pickling with a fume scrubber (Part 420, Subpart I, Acid Pickling) Hot Dip Galvanizing (Part 420, Subpart L, Hot Coating)


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Flow from process wastewater and miscellaneous non-process wastewater is treated by the metals removal system which includes two stages of neutralization, aeration, precipitation, coagulation, sand filtration, and multimedia filtration. This treated wastewater discharges through outfall 601 (average design flow of 1.66 MGD) before flowing to external outfall 002. Internal Station 602 The process wastewater treated at this outfall is from the Iron & Steel category.

84” Hot Strip Mill (Part 420, Subpart G, Hot Forming) 84” Tandem Mill (Part 420, Subpart J, Cold Forming) 84” Temper Mill (Part 420, Subpart J, Cold Forming) Hot Dip Galvanizing Line (Part 420, Subpart L, Hot Coating)

Flow from process wastewater and miscellaneous non-process wastewater is treated by the oily waste treatment system. This system includes neutralization, flocculation, and flotation. Blowdown from the hot mill system is treated by deep bed filters and enters the oily waste treatment system where it is treated through neutralization, flocculation, and flotation. The treated wastewater discharges through outfall 602 (average design flow of 2.0 MGD) before flowing to external outfall 002. Calculated Station 603 The sum of the pollutant loadings from internal stations 601 and 602 are reported under outfall 603. This fictional outfall contains the limits for applicable process discharges. This outfall has not violated limits over the past five years. Calculated Station 693 At ArcelorMittal’s request, this outfall and any permit conditions for the electrogalvanizing process has been removed from this permit. This is warranted because this process has not been in operation since 2006 and the facility has no plans to resume operation. This station used to contain similar reporting procedures as calculated station 603, but was only applicable when electrogalvanizing wastewater was being discharged.

Outfall 005 and Internal Monitoring Station 604 Outfall 005 receives treated wastewater from internal station 604 as well as storm water, non-contact cooling water, groundwater, emergency sanitary overflow, emergency process overflow, and city water. Chlorination and dechlorination occur between outfall 604 and outfall 005. The average design flow for outfall 005 is 38 MGD. This outfall has not violated limits over the past five years.

Internal Station 604 The process wastewater treated at this outfall is from the Iron & Steel category.

C5 and C6 Blast Furnaces (Part 420, Subpart C, Ironmaking) In addition to blast furnace recycle system blowdown, miscellaneous non-process wastewater and storm water flow in this outfall. The wastewater is treated through neutralization, precipitation, coagulation, vacuum filtration, and settling. The treated wastewater discharges through station 604 (average design flow of 0.30 MGD) before flowing to external outfall 005. There was one effluent violation at outfall 604 – zinc concentration in September 2011.

Outfall 017 Only wastestreams associated with the Iron & Steel category are treated at this outfall.

Number 1 Basic Oxygen Furnace (Part 420, Subpart D, Steelmaking) Vacuum Degassing (Part 420, Subpart E, Vacuum Degassing) Continuous Casting (Part 420, Subpart F, Continuous Casting)


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Flow from process wastewater, service water, storm water, groundwater, and cooling tower blowdown is treated by settling, neutralization, chemical precipitation, coagulation, flocculation, rapid sand filtration, vacuum filtration, and chlorination. Under extreme storm conditions, partially treated wastewater can bypass directly from the clarifier effluent pump station and into the Cuyahoga River via outfall 011. Outfall 017 has an average design flow of 0.30 MGD. See Table 3 for a list of effluent violations at outfall 017. Outfall 022 & Internal Monitoring Station 622 Outfall 022 receives treated wastewater from internal monitoring station 622 as well as storm water and groundwater. No treatment occurs between outfall 622 and outfall 022. The average design flow for outfall 022 is 1.9 MGD. This outfall has not violated limits over the past five years.

Internal Station 622 The process wastewater treated at this outfall is from the Iron & Steel category.

Continuous Casting (Part 420, Subpart F, Continuous Casting) Flow from process wastewater is treated by a sand filter prior to neutralization, precipitation, coagulation, settling, and a filter press. Off-site storm water and groundwater undergoes the same treatment except that it is treated by oil separation instead of sand filters. Basic oxygen furnace cooling tower blowdown is only treated by neutralization, precipitation, coagulation, settling, and a filter press. The treated wastewater discharges through station 622 (average design flow of 1.5 MGD) before discharging to outfall 022. This outfall has not violated limits over the past five years.

Outfall 023 and Internal Monitoring Stations 613, 633, 643, and 653 Outfall 023 receives overflows from the four storm water retention ponds at the solid waste disposal facility. Groundwater and pond overflows are not treated before discharge to the Cuyahoga River. The storm water retention ponds and their respective internal monitoring stations are listed below.

Pond 1 – Station 613 Pond 3 – Station 633 Pond 4 – Station 643 Pond 5 – Station 653

There is a possibility that the discharge from Outfall 023 contains leachate from ArcelorMittal’s Solid Waste Disposal Facility. Table 5 presents data compiled from the NPDES permit renewal application Form 2C. Table 6 presents a summary of unaltered Discharge Monitoring Report (DMR). Data are presented for the period January 2011 to December 2015, and current permit limits are provided for comparison. Table 7 summarizes the chemical specific data for major outfalls by presenting the average and maximum PEQ values. Table 8 summarizes the results of acute and chronic WET tests of the final effluent. ASSESSMENT OF IMPACT ON RECEIVING WATERS The section of the Cuyahoga River within the vicinity of ArcelorMittal effluent has been identified as a priority impaired water on Ohio’s 303(d) list. A Total Daily Maximum Load (TMDL) report was approved for the Lower Cuyahoga River in September 2003.


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An assessment of the impact of a permitted point source on the immediate receiving waters includes an evaluation of the available chemical/physical, biological, and habitat data which have been collected by Ohio EPA pursuant to the Five-Year Basin Approach for Monitoring and NPDES Reissuance. Other data may be used provided it was collected in accordance with Ohio EPA methods and protocols as specified by the Ohio WQS and Ohio EPA guidance documents. Other information which may be evaluated includes, but is not limited to: NPDES permittee self-monitoring data; effluent and mixing zone bioassays conducted by Ohio EPA, the permittee, or U.S. EPA. In evaluating this data, Ohio EPA attempts to link environmental stresses and measured pollutant exposure to the health and diversity of biological communities. Stresses can include pollutant discharges (permitted and unpermitted), land use effects, and habitat modifications. Indicators of exposure to these stresses include whole effluent toxicity tests, fish tissue chemical data, and fish health biomarkers (for example, fish blood tests). Use attainment is a term which describes the degree to which environmental indicators are either above or below criteria specified by the Ohio WQS (OAC 3745-1). Assessing use attainment status for aquatic life uses primarily relies on the Ohio EPA biological criteria (OAC 3745-1-07; Table 7-15). These criteria apply to rivers and streams outside of mixing zones. Numerical biological criteria are based on measuring several characteristics of the fish and macroinvertebrate communities; these characteristics are combined into multimetric biological indices including the Index of Biotic Integrity and modified Index of Well-Being, which indicate the response of the fish community, and the Invertebrate Community Index, which indicates the response of the macroinvertebrate community. Numerical criteria are broken down by ecoregion, use designation, and stream or river size. Ohio has five ecoregions defined by common topography, land use, potential vegetation and soil type. Three attainment status results are possible at each sampling location -full, partial, or non-attainment. Full attainment means that all of the applicable indices meet the biocriteria. Partial attainment means that one or more of the applicable indices fails meet the biocriteria. Nonattainment means that either none of the applicable indices meet the biocriteria or one of the organism groups indicates poor or very poor performance. An aquatic life use attainment table (see Table 9) is constructed based on the sampling results and is arranged from upstream to downstream and includes the sampling locations indicated by river mile, the applicable biological indices, the use attainment status (i.e., full, partial, or non), the Qualitative Habitat Evaluation Index, and comments and observations for each sampling location. The full TMDL report can be found at this website: http://www.epa.ohio.gov/dsw/tmdl/CuyahogaRiver.aspx . In addition to the TMDL is the 2014 Integrated Report which includes the most recent data available for the Lower Cuyahoga River. Based on data prior to 2003, attainment for aquatic use is listed as impaired in the TMDL. It is not yet clear if the water quality at the Lower Cuyahoga River has improved over the years, as it is listed as “unknown” in the 2014 Integrated Report. However, the 2010 Integrated Report is consistent with the TMDL, listing aquatic life as impaired due to the following causes: direct habitat alterations, flow alteration, metals, and organic enrichment (dissolved oxygen). According to the TMDL and 2010 Integrated Report, the sources of aquatic life impairment are combined sanitary overflows, urban runoff, storm sewers, and spills. According to the 2014 Integrated Report, recreational use is impaired due to bacteria. No additional limits are recommended for ArcelorMittal based on these reports. The next TMDL study is at this watershed is scheduled for 2020. The full Integrated Report can be found at this website: http://www.epa.ohio.gov/dsw/tmdl/OhioIntegratedReport.aspx .


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DEVELOPMENT OF WATER-QUALITY-BASED EFFLUENT LIMITS Determining appropriate effluent concentrations is a multiple-step process in which parameters are identified as likely to be discharged by a facility, evaluated with respect to Ohio water quality criteria, and examined to determine the likelihood that the existing effluent could violate the calculated limits. Parameter Selection Effluent data for the ArcelorMittal were used to determine what parameters should undergo WLA. The parameters discharged are identified by the data available to Ohio EPA DMR data submitted by the permittee, compliance sampling data collected by Ohio EPA, and any other data submitted by the permittee, such as priority pollutant scans required by the NPDES application or by pretreatment, or other special conditions in the NPDES permit. The sources of effluent data used in this evaluation are as follows:

Self-monitoring data (DMR) Mercury at Outfalls 005, 017, and 022 January 2011 – July 2017

All Other Pollutants April 2012 – July 2017 Form 2.C. Application data 2012 Non-Representative Data and Statistical Outliers The data were examined and the following values were removed from the evaluation to give a more reliable PEQ:

Outfall 005; ammonia (winter) – 9.34 mg/L, 1/23/14, excluded as a high outlier Outfall 017; mercury – 79 ng/L, 1/14/11, excluded as a high outlier Outfall 022; copper – 173 µg/L, 8/4/15, excluded as a high outlier Outfall 023; ammonia (summer) – 14.7 mg/L, 8/28/15, excluded as a high outlier

This data is evaluated statistically, and PEQ values are calculated for each pollutant. Average PEQ (PEQavg) values represent the 95th percentile of monthly average data, and maximum PEQ (PEQmax) values represent the 95th percentile of all data points (see Table 7). The PEQ values are used according to Ohio rules to compare to applicable WQS and allowable WLA values for each pollutant evaluated. Initially, PEQ values are compared to the applicable average and maximum WQS. If both PEQ values are less than 25 percent of the applicable WQS, the pollutant does not have the reasonable potential to cause or contribute to exceedances of WQS, and no WLA is done for that parameter. If either PEQavg or PEQmax is greater than 25 percent of the applicable WQS, a WLA is conducted to determine whether the parameter exhibits reasonable potential and needs to have a limit or if monitoring is required (see Table 10). Wasteload Allocation For those parameters that require a WLA, the results are based on the uses assigned to the receiving waterbody in OAC 3745-1. Dischargers are allocated pollutant loadings/concentrations based on the Ohio WQS (OAC 3745-1). Most pollutants are allocated by a mass-balance method because they do not degrade in the receiving water. For free flowing streams, WLAs using this method are done using the following general equation: Discharger WLA = (downstream flow x WQS) - (upstream flow x background concentration). Discharger WLAs are divided by the discharge flow so that the allocations are expressed as concentrations. The following dischargers in the Cuyahoga River were considered interactive (see Figure 3):

ArcelorMittal Outfalls 001, 002, 005, 014, 017, 022, 023, 024 Northeast Ohio Regional Sewer District (NEORSD) Southerly Wastewater Treatment Plant (WWTP)

The ArcelorMittal and NEORSD Southerly WWTP were allocated together for most parameters due to the size of the plant discharges, the flows of the Cuyahoga River and the relatively close proximity of the two plants.


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The exception was the WLA for ammonia toxicity, which was done separately for each facility because ammonia is considered a non-conservative parameter. The available assimilative capacity was distributed among them using the conservative substance wasteload allocation (CONSWLA) water quality model for conservative parameters. CONSWLA is the model Ohio EPA typically uses in multiple discharger situations. CONSWLA model inputs for flow are fixed at their critical low levels and inputs for effluent flow are fixed at their design or 50th percentile levels. Background concentrations are fixed at a representative value (generally a 50th percentile). A mass balancing method is then used to allocate effluent concentrations that maintain WQS under these conditions. This technique is appropriate when data bases are unavailable to generate statistical distributions for inputs and if the parameters modeled are conservative. The applicable waterbody uses for this facility’s discharge and the associated stream design flows are as follows:

Aquatic life (Warmwater Habitat) Toxics (metals, organics, etc.) Average Annual 7Q10 Maximum Annual 1Q10

Ammonia Average Summer/Winter 30Q10 Fish Passage Conditions Maximum Summer/Winter 7Q10 Wildlife Habitat Annual 90Q10

Agricultural Water Supply Harmonic mean flow Human Health (nondrinking) Harmonic mean flow

Allocations are developed using a percentage of stream design flow as specified in Table 11 and allocations cannot exceed the Inside Mixing Zone Maximum (IMZM) criteria. The data used in the WLA are listed in Tables 5 and 6. The WLA results to maintain all applicable criteria are presented in Table 12. Dissolved Metals Translators A DMT is the factor used to convert a dissolved metal aquatic life criterion to an effective total recoverable aquatic life criterion with which a total recoverable aquatic life allocation can be calculated as required by NPDES permit rules [OAC 3745-33-05(C)(2)]. Currently, a DMT is based on site- or area-specific field data; each field data sample consists of a total recoverable measurement paired with a dissolved metal measurement. For the lower Cuyahoga River, there were five such paired samples available applicable to cadmium, chromium, copper, lead, nickel and zinc. To account for the limited quantity of data, the DMT for each of these metals was determine as the lower end of the 95 percent confidence interval (1-tail) about the geometric mean of the total recoverable-to-dissolved ratios of the sample pairs. Each DMT is metal-specific and is applied by multiplying the dissolved criteria by the DMT, resulting in total effective recoverable criteria which are used in the WLA procedures. In some cases, it is possible that the use of a DMT may result in instream concentrations of metals that may increase the risk of non-attainment of the aquatic life use designation. This was evaluated for the ArcelorMittal. The application of the dissolved metal translators resulted in effective total recoverable criteria for chromium, copper, lead, nickel, and zinc that were higher than the total recoverable criteria listed in OAC 3745-1. The lower Cuyahoga River near the ArcelorMittal is not attaining its designated use. In addition, the ArcelorMittal has not requested an increase in permitted load for these parameters. Therefore, the facility cannot


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receive permit limits that maintain all numeric criteria, up to their current limits, without undergoing any further review to ensure that the limits for the metals will protect the aquatic life and other uses. The DMTs used in the modeling for the lower Cuyahoga River are based on sample data collected in 1996-97 and may no longer be representative of current instream conditions. Should ArcelorMittal wish to continue using DMTs for future wasteload allocations, a new DMT analysis or study must be completed prior to the next permit renewal and submitted with the renewal application. See paragraphs F and G in OAC 3745-2-04 for requirements in developing a DMT study. Whole Effluent Toxicity WLA Whole effluent toxicity (WET) is the total toxic effect of an effluent on aquatic life measured directly with a toxicity test. Acute WET measures short term effects of the effluent while chronic WET measures longer term and potentially more subtle effects of the effluent. WQS for WET are expressed in Ohio’s narrative “free from” WQS rule [OAC 3745-1-04(D)]. These “free froms” are translated into toxicity units (TUs) by the associated WQS Implementation Rule (OAC 3745-2-09). WLAs can then be calculated using TUs as if they were water quality criteria. The WLA calculations for WET are similar to those for aquatic life criteria - using the chronic toxicity unit (TUc) and 7Q10 flow for the average and the acute toxicity unit (TUa) and 1Q10 flow for the maximum. These values are the levels of effluent toxicity that should not cause instream toxicity during critical low-flow conditions. For ArcelorMittal, the WLA values for each outfall is as follows:

Outfall 001: 0.33TUa and 532.8 TUc Outfall 002: 0.33TUa and 34.8 TUc Outfall 005: 0.33TUa and 6.92 TUc (FPC) Outfall 014: 0.33TUa and 6.85 TUc (FPC) Outfall 017: 0.32TUa and 474.9 TUc (FPC) Outfall 022: 0.33TUa and 68.4 TUc Outfall 023: 0.33TUa and no limit for TUc (LRW) Outfall 024: 0.33TUa and 246.1 TUc

For outfalls 005, 014, and 017, no limits apply for chronic toxicity during the times when FPC does not apply. FPC does not apply during the months of February through May where the flow rate at USGS Gage #40208000 is less than 703 cfs. The chronic toxicity unit (TUc) is defined as 100 divided by the estimate of the effluent concentration which causes a 25% reduction in growth or reproduction of test organisms (IC25):

TUc = 100/IC25 This equation applies outside the mixing zone for warmwater, modified warmwater, exceptional warmwater, coldwater, and seasonal salmonid use designations except when the following equation is more restrictive (Ceriodaphnia dubia only):

TUc = 100/geometric mean of No Observed Effect Concentration and Lowest Observed Effect Concentration The acute toxicity unit (TUa) is defined as 100 divided by the concentration in water having 50% chance of causing death to aquatic life (LC50) for the most sensitive test species:

TUa = 100/LC50


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This equation applies outside the mixing zone for warmwater, modified warmwater, exceptional warmwater, coldwater, and seasonal salmonid use designations. When the acute WLA is less than 1.0 TUa, it may be defined as: Dilution Ratio Allowable Effluent Toxicity (downstream flow to discharger flow) (percent effects in 100% effluent) up to 2 to 1 30 greater than 2 to 1 but less than 2.7 to 1 40 2.7 to 1 to 3.3 to 1 50 The acute WLA for ArcelorMittal is 30 percent mortality in 100 percent effluent based on the dilution ratio of less than 2 to 1. REASONABLE POTENTIAL / EFFLUENT LIMITS / HAZARD MANAGEMENT DECISIONS After appropriate effluent limits are calculated, the reasonable potential of the discharger to violate the WQS must be determined. Each parameter is examined and placed in a defined "group". Parameters that do not have a WQS or do not require a WLA based on the initial screening are assigned to either group 1 or 2. For the allocated parameters, the preliminary effluent limits (PEL) based on the most restrictive average and maximum WLAs are selected from Table 17. The average PEL (PELavg) is compared to the average PEQ (PEQavg) from Table 7, and the PELmax is compared to the PEQmax. Based on the calculated percentage of the allocated value [(PEQavg ÷ PELavg) X 100, or (PEQmax ÷ PELmax) X 100)], the parameters are assigned to group 3, 4, or 5. The groupings are listed in Table 13. The final effluent limits are determined by evaluating the groupings in conjunction with other applicable rules and regulations. Table 14 presents the basis for final effluent limits and monitoring requirements proposed for ArcelorMittal’s external outfalls 001, 002, 005, 014, 017, 022, 023, 024 and internal monitoring stations 601, 602, 603, 604, 613, 622, 633, 643, 653, and 693. Unless otherwise indicated, the monitoring frequencies proposed in the permit are continued from the existing permit. Outfall 001

Flow Rate Monitoring for this parameter is proposed to continue in order to document the flow contribution to the Cuyahoga River.

pH Limits proposed for pH are based on WQS (OAC 3745-1-07).

Aluminum, Ammonia, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Total Residual Chlorine, Chromium, Copper, Free Cyanide, Fluoride, Iron, Manganese, Mercury, Molybdenum, Naphthalene, Nickel, Nitrate+Nitrite, Phenol, Selenium, Silver, Strontium, Tetrachloroethylene, Thallium, Total Filterable Residue, and Zinc The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. No new monitoring is proposed.

External Outfall 002, Internal Stations 601 & 602, and Calculated Stations 603 & 693


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Outfall 002 consists of combined flows from Internal Outfalls 601 and 602. The internal stations are monitored for parameters required by their ELGs, though a majority of loading limits are combined and applicable at Calculated Outfalls 603. Calculated Station 603 is applicable when no electrogalvanizing process wastewater is discharged. Note that Station 603 deoes not physically exist and only reflects the sum of loadings at the internal stations. Calculated Station 693 is similar to Station 603, except only applicable when electrogalvanizing process wastewater is discharged; this station has been removed from the permit because the facility no longer operates the electrogalvanizing process. Outfall 002

Flow Rate Monitoring for flow rate is proposed to continue in order to evaluate the performance of the treatment plant.

pH Limits proposed for pH are based on WQS (OAC 3745-1-07). Weekly monitoring for this permit shall continue. Total Filterable Residue (dissolved solids)

The Ohio EPA risk assessment (Table 13) places this parameter in Group 4. This placement, as well as the data in Tables 5-7, support that TDS does not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monitoring for Group 4 pollutants (where PEQ exceeds 50 percent of the WLA) is required by OAC 3745-33-07(A)(2). Monitoring for TDS is proposed to occur on a weekly basis.

Aluminum, Ammonia, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Total Residual Chlorine, Chromium, Copper, Free Cyanide, Fluoride, Iron, Manganese, Mercury, Molybdenum, Naphthalene, Nickel, Nitrate+Nitrite, Phenol, Selenium, Silver, Strontium, Tetrachloroethylene, and Thallium The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. No new monitoring is proposed. Water Temperature, Oil & Grease, and Total Suspended Solids Based on BTJ, weekly monitoring is proposed for water temperature while oil & grease conditions are proposed to continue. In addition, monitoring is proposed to decrease from weekly to monthly for total suspended solids. For total suspended solids, weekly monitoring at the final outfall is redundant with the monitoring requirements at the internal monitoring stations 601 and 602. Therefore, based on BTJ, monthly monitoring is adequate in characterizing this parameter in the final outfall discharge. The purpose of monitoring water temperature is to obtain data on the level and variability of water temperature of the discharge. In addition, monitoring will document the discharge’s impact on water quality criteria compliance at the Cuyahoga River (OAC 3745-1-07, Table 7-14). Although the WQS for oil and grease is 10 mg/L, the standard applies outside of the mixing zone as the Outside Mixing Zone Maximum (OMZM). A default mixing ratio of two has been applied historically to ArcelorMittal’s outfalls, resulting in a daily maximum oil & grease limit of 20 mg/L at the outfall itself. The monthly limit of 15 mg/L is also based on BTJ. The oil & grease limit does not pose a problem at the receiving stream because the TMDL does not identify this parameter as a cause of impairment. In addition, narrative standards prohibiting floating oils, visible sheens, etc. at the Cuyahoga River still apply.


Flow Rate and Total Filterable Residue (dissolved solids)


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Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment system. pH Weekly pH monitoring without limits is proposed to continue. Although there are ELGs for pH, 40 CFR 420.07 allows this limit to be applied at the external outfall instead. Total Cyanide, Lead, Oil & Grease, Total Suspended Solids, and Zinc Monitoring for these parameters are based on the federal ELGs found in 40 CFR Part 420 (Subparts G and I) and 40 CFR Part 433. Loading limits for these parameters are enforced at Calculated Outfalls 603 and 693. Cyanide and Total Toxic Organics Limits and monitoring requirements are proposed to be removed for these parameters. Conditions for these parameters were only based on the federal ELGs associated with the electrogalvanizing line (40 CFR 433). At ArcelorMittal’s request, discharges from the facility’s electrogalvanizing process is no longer included in the permit. Cadmium, Chromium, Copper, Nickel, and Silver The monitoring waiver for these parameters will be removed from this internal station. In previous permits, Ohio EPA granted a monitoring waiver for these pollutants through the process described in 40 CFR 122.44(a)(2). However, because the electrogalvanizing process is no longer authorized under the permit, monitoring and limits for these pollutants are no longer applicable to ELGs. Monitoring for these parameters are not required because the parameter assessment (Table 13) for Outfall 002 supports that these parameters have a low likelihood of exceeding the WQS.

Internal Station 602 Flow Rate and Total Filterable Residue (dissolved solids) Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment system. pH Weekly pH monitoring without limits is proposed to continue. Although there are ELGs for pH, 40 CFR 420.07 allows this limit to be applied at the external outfall instead. Lead, Oil and Grease, Total Suspended Solids, and Zinc Monitoring for these parameters are based on the federal ELGs found in 40 CFR Part 420, Subparts J and L. Loading limits for these parameters are enforced at Calculated Outfall 603. Free Cyanide ELGs applicable to this outfall do not contain monitoring requirements or limits for this parameter. Monitoring for free cyanide is proposed to be removed. Naphthalene and Tetrachloroethylene The ELGs for 40 CFR 420, Subpart J includes monitoring and limits for these parameters. However, ArcelorMittal only uses natural oils (e.g. animal fat and vegetable-based oils) to lubricate the cold rolling mills instead of synthetic oils. Therefore, these pollutants are not expected to be present in the discharge. This information is supported by the data found in Table 5 and Table 13. Under 40 CFR 122.44(a)(2), Ohio EPA is granting a monitoring waiver for these pollutants.


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Calculated Station 603 This outfall includes the sum of the loading limits of Internal Outfalls 601 and 602.

Flow Rate, and Total Filterable Residue (dissolved solids) Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment system. Oil & Grease and Total Suspended Solids Limits for these parameters are based on the combined federal ELGs applicable to wastewater at Internal Outfalls 601 and 602. Based on BTJ, limits for TSS and oil and grease are to be implemented with anti-backsliding procedures (Attachment 3). The ELGs and calculations are summarized in Attachment 1 and Attachment 2.

Lead and Zinc Daily maximum lead limits and monthly average zinc limits are based on the ELGs applicable to process wastewater at Internal Outfalls 601 and 602 (Attachment 2). Monthly average lead limits and daily maximum zinc limits are based on WQS applicable to external Outfall 002. Implementation of these WQS limits is required at either Outfall 002 or 603 because the limits derived from the ELGs are higher than those derived from the WQS; it is Ohio EPA’s procedure to use the lowest applicable limit available for each pollutant (Attachment 3). Although WQS limits are typically enforced through external outfalls, ArcelorMittal requested that the WQS limits for monthly average lead and daily maximum zinc are proposed at Internal Outfall 603 instead of External Outfall 002. Ohio EPA is allowing this substitution of monitoring locations because based on BTJ Outfall 603 is representative of Outfall 002; this was determined by the fact that Outfall 603 contributes a majority of Outfall 002’s flow and is the only source of process wastewater at Outfall 002 (Tables 1 and 4).WQS loading limits for are based on the Outfall 002 flow rate of 5.665 MGD and the concentrations in Table 12. A 36-month compliance schedule for lead and zinc limits are included in Part I.C. of this permit. Monitoring shall continue on a weekly basis. Free Cyanide ELGs applicable to this outfall do not contain monitoring requirements or limits for this parameter. Monitoring for free cyanide is proposed to be removed.

Calculated Station 693

At ArcelorMittal’s request, this outfall and any permit conditions for the electrogalvanizing process has been removed from this permit. This is warranted because this process has not been in operation since 2006 and the facility has no plans to resume operation.

External Outfall 005 and Internal Stations 604 and 607 Outfall 005 contains treated wastewater from Internal Station 604, storm water, and non-contact cooling water. The Internal Station 604 is monitored and limited based on the ELG. Internal Station 607 is wastewater generated from blast furnace operations prior to treatment at Internal Station 604. Outfall 005

Flow Rate and High Water Temperature Monitoring for the flow rate and water temperature at the effluent is proposed to continue in order to evaluate the performance of the treatment plant. pH


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Limits proposed for pH are based on WQS (OAC 3745-1-07). Monitoring for pH shall continue on a weekly basis. Mercury The Ohio EPA risk assessment (Table 13) places mercury in Group 5. The placement in Group 5, as well as the data in Tables 5-7, indicate that the reasonable potential to exceed WQS exists and limits are necessary to protect water quality. For this parameter, the PEQ is greater than 100 percent of the WLA. Pollutants that meet this requirement must have permit limits under OAC 3745-33-07(A)(1). Monitoring for mercury shall continue on a quarterly basis.

For mercury limits, the thirty-day average concentration is based on the mercury variance procedure for data points between January 2011 – June 2017; the daily maximum concentration limit is based on the WLA. While all other parameters were evaluated using data between April 2012 – July 2017, it is Ohio EPA’s best technical judgment that more recent data is necessary for a more representative evaluation of mercury at Outfall 005. Loading limits are based on a flow rate of 45.2 MGD. For more information, please view the paragraph below regarding the Mercury Variance.

Mercury Variance To comply with mercury limits, ArcelorMittal has applied for coverage under the general mercury variance, OAC 3745-33-07(D)(10). Based on the results of low-level mercury monitoring, the permittee has determined that its facility cannot meet the 30-day average WQBEL of 1.3 ng/L. However, the permittee believes that the plant will be able to achieve an annual average mercury effluent concentration of 12 ng/L. The variance application also demonstrated to the satisfaction of Ohio EPA that there is no readily apparent means of complying with the WQBEL without constructing prohibitively expensive end-of-pipe controls for mercury. Based on these factors, the permittee is eligible for coverage under the general mercury variance. Ohio EPA has reviewed the mercury variance application and has determined that it meets the requirements of the OAC. Based on best technical judgment, the standard period of evaluation of April 2012 – July 2017 is only limited to 22 data points. Therefore, the period of evaluation for this pollutant is expanded to include January 2011 – July 2017 so that a wider data set is considered. A condition in Part II of the NPDES permit lists the provisions of the mercury variance, and includes the following requirements:

A variance-based monthly average effluent limit of 14 ng/L (13.65 ng/L rounded to the nearest whole number), which was developed based on the PEQavg for data points between January 2011 – July 2017;

A requirement that the permittee make reasonable progress to meet the WQBEL for mercury by implementing the plan of study, which has been developed as part of the Pollutant Minimization Program (PMP);

Low-level mercury monitoring of the plant’s influent (Internal Station 607) and effluent; A requirement that the annual average mercury effluent concentration is less than or equal to 12 ng/L

as specified in the plan of study; A summary of the elements of the plan of study; A requirement to submit an annual report on implementation of the PMP; and A requirement for submittal of a certification stating that all permit conditions related to

implementing the plan of study and the PMP have been satisfied, but that compliance with the monthly average WQBEL for mercury has not been achieved.

Free Cyanide The Ohio EPA risk assessment (Table 13) places free cyanide in Group 4. This placement, as well as the data in Tables 5-7, support that this parameter does not have the reasonable potential to contribute to WQS


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exceedances, and limits are not necessary to protect water quality. Monitoring for Group 4 pollutants (where PEQ exceeds 50 percent of the WLA) is required by OAC 3745-33-07(A)(2). Monitoring for free cyanide shall continue on a weekly basis. In addition, the free cyanide PEQ exceeds 75 percent of the WLA during FPC. Under OAC 3745-33-07(A)(2), parameters in this range must have a tracking requirement in the permit that specifies reductions in pollutant concentrations if effluent concentrations exceed the WLA. The tracking/reduction requirements are included in Part II of the permit. Ammonia and Total Filterable Residue (dissolved solids) The Ohio EPA risk assessment (Table 13) places these parameters in Groups 2 or 3 when FPC apply. During all other times, ammonia is in Group 2 and TDS is in Group 1 (no applicable WQS). This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monitoring requirements for ammonia and TDS are proposed to continue at their current schedules to document that these pollutants continue to remain at low levels.

Lead and Zinc The Ohio EPA risk assessment (Table 13) places these parameters in Group 2. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monthly monitoring for lead and zinc are proposed to continue to document that these pollutants continue to remain at low levels. Aluminum, Ammonia, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Chlorine (total residual), Chromium, Copper, Free Cyanide, Manganese, Molybdenum, Naphthalene, Nickel, Phenols, Selenium, Silver, Strontium, Tetrachloroethylene, and Thallium The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. The limit for total residual chlorine is proposed to be removed while weekly monitoring continues. No new monitoring requirements are proposed.


Flow Rate Flow Rate is proposed to continue in order to evaluate the performance of the treatment system. pH Weekly pH monitoring without limits is proposed to continue. Although there are ELGs for pH, 40 CFR 420.07 allows this limit to be applied at the external outfall instead. Total Cyanide, Lead, Phenols, Total Suspended Solids, and Zinc Limits for these parameters are based on the federal ELGs found in 40 CFR Part 420, Subpart C. Based on BTJ, limits for TSS are to be implemented with anti-backsliding procedures (Attachment 3). The ELGs and calculations are summarized in Attachment 1 and Attachment 2. The ELGs and calculations are summarized in Attachment 1 and Attachment 2. Ammonia To comply with ammonia limits during increased production, ArcelorMittal has applied for variance effluent limits under Section 301(g). The request is being made for the following reasons:


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Upon resumption of blast furnace production operations in Fall 2009, concentrations of ammonia in the blast furnace recycle system have exceeded historical levels; and

Increased production rates have increased the probability of exceeding the ammonia effluent limits at Outfall 604.

Previous ammonia limits were based on a combination of best available technology (BAT) standards and a previous 301(g) variance approved in 2001. The most recently submitted variance requests that ammonia limits increase past the limitation set by BAT standards. The variance application demonstrated to the satisfaction of Ohio EPA that there is no readily apparent means of complying with the WQBEL without constructing prohibitively expensive end-of-pipe controls for ammonia. The proposed variance does not exceed the calculated WLA limits or limits for Best Practicable Technology (BPT) (see Attachment 4). In addition, the granting of this variance cannot result in any additional controls on other point or non-point source. Based on these factors, the permittee is eligible for coverage under Section 301(g). Unless the 301(g) variance is denied, the monthly and daily loading limits for ammonia shall increase to 224 kg/day and 294 kg/day, respectively. If the variance request is denied, the ammonia loading limits shall remain the same. The current 301(g) variance is available through Ohio EPA’s website under Discharger-specific Permit Information: http://www.epa.ohio.gov/dsw/permits/individuals.aspx .

Internal Station 607 Mercury This internal monitoring station has been added specifically to monitor for mercury, as required by a variance requirement to monitoring mercury at the influent [OAC 3745-33-07(D)(6)(v)]. Quarterly monitoring is proposed at the Influent Sump to include all process wastewater flows prior to treatment. That data will be compared with the mercury results at Intake 801 and Internal Station 604 to quantify the amount of mercury contributed by process operations.

Outfall 014

Flow Rate, High Water Temperature, Oil & Grease, and Total Suspended Solids Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment system.

pH Limits proposed for pH are based on WQS (OAC 3745-1-07). Weekly pH monitoring is proposed to continue. Ammonia and Total Filterable Residue The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7 support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monthly monitoring is proposed to continue to document that these pollutants continue to remain at low levels.

Aluminum, Ammonia, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Chlorine (total residual) Chromium, Copper, Free Cyanide, Lead, Manganese, Mercury, Molybdenum, Naphthalene, Nickel, Phenol, Selenium, Silver, Strontium, Tetrachloroethylene, Thallium, and Zinc The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. The limit for total


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residual chlorine is proposed to be removed while weekly monitoring continues. Monitoring requirements for zinc are proposed to be removed. No new monitoring is proposed.

External Outfall 017 and Internal Station 617 Outfall 017

Flow Rate and Water Temperature Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment plant. pH Limits proposed for pH are based on WQS (OAC 3745-1-07). Weekly monitoring is proposed to continue. In addition, reporting of excursion events is included in the permit as required by 40 CFR 401.17. Lead, Oil and Grease, Total Suspended Solids, and Zinc The decreased limits recommended for these parameters are based on production changes and the ELGs found in 40 CFR Part 420, Subpart D. All ELGs and loading limits are summarized in Attachment 1 thru Attachment 3. For lead and zinc, concentration limits are proposed to ensure compliance with the WQS (Appendix 3). The monthly average concentration limit for lead is based on WQS instead of the production-based loading limits (ELGs). The concentration limit for zinc is based on antibacksliding regulations in OAC 3745-33-05 which prevent the imposition of less stringent limits than those in the existing permit unless specific conditions have been satisfied. In the case of ArcelorMittal, none of those conditions have been satisfied, so the existing concentration limit is proposed to continue. A monthly average concentration limit is not required for zinc because it is equal to the daily maximum limit, and therefore redundant. The loading limits for lead and zinc are based on ELGs.

Based on BTJ, weekly monitoring and limits are proposed to continue for oil & grease. Although the WQS for oil & grease is 10 mg/L, the standard applies outside of the mixing zone as the OMZM. A default mixing ratio of two has been applied historically to ArcelorMittal’s outfalls, resulting in a daily maximum oil & grease limit of 20 mg/L at the outfall. The monthly limit of 15 mg/L is also based on BTJ. Although, the proposed concentration limits are not consistent with the flow and concentration limits, the discharge does not pose a problem at the receiving stream because the TMDL does not identify this parameter as a cause of impairment. In addition, narrative standards prohibiting floating oils, visible sheens, etc. at the Cuyahoga River still apply. A compliance schedule is not required for the implementation of these limits because sampling data suggests that ArcelorMittal will be able to meet the lowered limits.

Mercury The Ohio EPA risk assessment (Table 13) places mercury in Group 5. This placement, as well as the data in Tables 5-7, indicate that the reasonable potential to exceed WQS exists and limits are necessary to protect water quality. For mercury, the PEQ is greater than 100 percent of the WLA. Pollutants that meet this requirement must have permit limits under OAC 3745-33-07(A)(1). Monitoring for mercury shall continue on a quarterly basis. For mercury limits, the thirty-day average concentration is based on the mercury variance procedure for data points between January 2011 – June 2017; the daily maximum concentration limit is based on the WLA. While all other parameters were evaluated using data between April 2012 – July 2017, it is Ohio EPA’s best technical judgment that more recent data is necessary for a more representative evaluation of mercury at


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Outfall 017. Loading limits are based on a flow rate of 0.665 MGD. For more information, please view the paragraph below regarding the Mercury Variance.

Mercury Variance To comply with mercury limits, ArcelorMittal has applied for coverage under the general mercury variance, OAC 3745-33-07(D)(10). Based on the results of low-level mercury monitoring, the permittee has determined that its facility cannot meet the 30-day average WQBEL of 1.3 ng/L. However, the permittee believes that the plant will be able to achieve an annual average mercury effluent concentration of 12 ng/L. The variance application also demonstrated to the satisfaction of Ohio EPA that there is no readily apparent means of complying with the WQBEL without constructing prohibitively expensive end-of-pipe controls for mercury. Based on these factors, the permittee is eligible for coverage under the general mercury variance. Ohio EPA has reviewed the mercury variance application and has determined that it meets the requirements of the OAC. Based on best technical judgment, the standard period of evaluation of April 2012 – July 2017 is only limited to 22 data points. Therefore, the period of evaluation for this pollutant is expanded to include January 2011 – July 2017 so that a wider data set is considered. A condition in Part II of the NPDES permit lists the provisions of the mercury variance, and includes the following requirements:

A variance-based monthly average effluent limit of 6.95 ng/L, which was developed from the PEQavg during the period January 2011 – July 2017;





Total Filterable Residue (dissolved solids) The Ohio EPA risk assessment (Table 13) places total filterable residue in Group 4 when FPC apply. This placement, as well as the data in Tables 5-7, support that this parameter does not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monitoring for Group 4 pollutants (where PEQ exceeds 50 percent of the WLA) is required by OAC 3745-33-07(A)(2). Monitoring shall occur on a weekly basis.

Total Residual Chlorine The Ohio EPA risk assessment (Table 13) places these parameters in Group 2. This placement, as well as the data in Tables 5-7, support that total residual chlorine does not have the reasonable potential to contribute to WQS exceedances, and limits based on WQS are not necessary. Weekly monitoring for total residual chlorine is required to document the contribution of chlorination prior to the outfall.

Aluminum, Ammonia, Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Copper, Manganese, Molybdenum, Naphthalene, Nickel, Phenol, Selenium, Silver, Strontium, Tetrachloroethylene, and Thallium The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to


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contribute to WQS exceedances, and limits are not necessary to protect water quality. No new monitoring is proposed. Free Cyanide Based on BTJ, quarterly sampling for free cyanide is proposed because the process wastewater discharged through this outfall contains total cyanide (see Table 5). Free cyanide was placed in group 2 of the Ohio EPA risk assessment (Table 13) by default because no free cyanide data is available at this outfall; therefore, there is no data to demonstrate whether there is reasonable potential for this pollutant to exceed WQS. The proposed monitoring schedule is meant to document reasonable potential (or lack thereof) for the next permit renewal.

Internal Station 617 Mercury This internal monitoring station has been added specifically to monitor for mercury, as required by a variance requirement to monitoring mercury at the influent [OAC 3745-33-07(D)(6)(v)]. Quarterly monitoring is proposed at the Steel Plant Cooling Tower Influent Pit to include all process wastewater flows prior to treatment. This data will also be compared with the mercury results at Outfall 017 to document the treatment system’s ability to remove mercury from process wastewater.

External Outfall 022 & Internal Stations 620 & 622 Discharge from Internal Station 622 ultimately flows to Outfall 022. Outfall 022

Flow Rate and Water Temperature Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment plant. pH Limits proposed for pH are based on WQS (OAC 3745-1-07). Weekly monitoring shall continue for this parameter. Mercury The Ohio EPA risk assessment (Table 13) places mercury in group 5. This placement, as well as the data in Tables 5-7, indicates that the reasonable potential to exceed WQS exists and limits are necessary to protect water quality. For mercury, the PEQ is greater than 100 percent of the WLA. Pollutants that meet this requirement must have permit limits under OAC 3745-33-07(A)(1).

For mercury limits, the thirty-day average concentration is based on the mercury variance procedure for data points between January 2011 – June 2017; the daily maximum concentration limit is based on the WLA. While all other parameters were evaluated using data between April 2012 – July 2017, it is Ohio EPA’s best technical judgment that more recent data is necessary for a more representative evaluation of mercury at Outfall 022. Loading limits are based on a flow rate of 2.92 MGD. For more information, please view the paragraph below regarding the Mercury Variance.

Mercury Variance To comply with mercury limits, ArcelorMittal has applied for coverage under the general mercury variance, OAC 3745-33-07(D)(10). Based on the results of low-level mercury monitoring, the permittee has determined that its facility cannot meet the 30-day average WQBEL of 1.3 ng/L. However, the permittee believes that the plant will be able to achieve an annual average mercury effluent concentration of 12 ng/L. The variance application also demonstrated to the satisfaction of Ohio EPA that there is no readily apparent


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means of complying with the WQBEL without constructing prohibitively expensive end-of-pipe controls for mercury. Based on these factors, the permittee is eligible for coverage under the general mercury variance. Ohio EPA has reviewed the mercury variance application and has determined that it meets the requirements of the OAC. Based on best technical judgment, the standard period of evaluation of April 2012 – July 2017 is only limited to 21 data points. Therefore, the period of evaluation for this pollutant is expanded to include January 2011 – July 2017 so that a wider data set is considered. A condition in Part II of the NPDES permit lists the provisions of the mercury variance, and includes the following requirements:

A variance-based monthly average effluent limit of 2.7 ng/L (2.66 ng/L rounded to the nearest tenth), which based on BTJ, was developed from the PEQmax between January 2011 – July 2017;





Total Filterable Residue (dissolved solids) The Ohio EPA risk assessment (Table 13) places total filterable residue in Group 4. This placement, as well as the data in Tables 5-7, support that this parameter does not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monitoring for Group 4 pollutants (where PEQ exceeds 50 percent of the WLA) is required by OAC 3745-33-07(A)(2). Monitoring will continue on a weekly basis. Total Residual Chlorine, Copper, Free Cyanide, Lead, and Zinc The Ohio EPA risk assessment (Table 13) places these parameters in Groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Weekly monitoring requirements are proposed to continue for free cyanide and zinc while monthly monitoring is proposed for the rest of the pollutants. Oil & Grease Based on BTJ, weekly monitoring and limits are proposed to continue. Although the WQS for oil & grease is 10 mg/L, the standard applies outside of the mixing zone as the OMZM. A default mixing ratio of two has been applied historically to ArcelorMittal’s outfalls, resulting in a daily maximum oil & grease limit of 20 mg/L at the outfall. The monthly limit of 15 mg/L is also based on BTJ. The oil & grease limit does not pose a problem at the receiving stream because the TMDL does not identify this parameter as a cause of impairment. In addition, narrative standards prohibiting floating oils, visible sheens, etc. at the Cuyahoga River still apply.

Aluminum, Ammonia, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Fluoride, Iron, Manganese, Molybdenum, Naphthalene, Nickel, Nitrate+Nitrite, Phenol, Selenium, Silver, Strontium, Tetrachloroethylene, and Thallium


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The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monitoring requirements for selenium are proposed to be removed. No new monitoring is proposed.

Internal Station 622 Flow Rate Monitoring for flow rate is proposed to continue in order to evaluate the performance of the treatment system. pH Daily pH monitoring without limits is proposed to continue. Although there are ELGs for pH, 40 CFR 420.07 allows this limit to be applied at the external outfall 022 instead. Lead, Oil and Grease, Total Suspended Solids, and Zinc (monthly average) Limits for the stormwater and non-contact cooling water are based on BTJ while limits for the process wastewater are based on federal ELGs found in 40 CFR Part 420, Subparts D and F. Based on BTJ, limits for TSS are to be implemented with anti-backsliding procedures (Attachment 3). The ELGs and calculations are summarized in Attachment 1 and Attachment 2. See Attachment 1 and Attachment 2 for the calculations. Zinc (daily maximum) The daily maximum zinc limit is based on WQS applicable to external Outfall 022 (Table 12) and the average daily design flow for Outfall 022 (2.92 MGD). Implementation of this WQS limit is required at either Outfall 022 or 622 because the limits derived from the ELGs are higher than those derived from the WQS; it is Ohio EPA’s procedure to use the lowest applicable limit available for each pollutant (Attachment 3). Although WQS limits are typically enforced through external outfalls, ArcelorMittal requested that the WQS limit for daily maximum zinc is proposed at Internal Station 622 instead of External Outfall 022.

Total Filterable Residue (dissolved solids) Based on BTJ, monitoring is proposed to continue on a weekly basis for total filterable residue. This requirement is supported by the fact that the Ohio EPA risk assessment (Table 13) categorizes the TDS at Outfall 022 as a group 4 parameter. Monitoring of this pollutant will document the loading contributed to Outfall 022 by this process wastewater. Selenium ELGs applicable to this outfall do not contain monitoring requirements or limits for this parameter. In addition, selenium is in group 3 at the external Outfall 022. This placement, as well as the data in Tables 5-7, support that this parameter does not have the reasonable potential to contribute to WQS exceedances at Outfall 022. Monitoring for selenium is proposed to be removed.

Internal Station 620 Mercury This internal monitoring station has been added specifically to monitor for mercury, as required by a variance requirement to monitoring mercury at the influent [OAC 3745-33-07(D)(6)(v)]. Quarterly monitoring is proposed at the Central Water Treatment Plant Scale Pit to include all process wastewater flows prior to treatment. That data will be compared with the mercury results at Intake 806 and Internal Station 622 to quantify the amount of mercury contributed by the process wastewater.

External Outfall 023 and Internal Stations 613, 633, 643, and 653


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Each internal outfall consists of flow from a storm water retention pond. All of these flows discharge to External Outfall 023. Outfall 023

Flow Rate. 5-day Biochemical Oxygen Demand, Chemical Oxygen Demand, Oil and Grease, pH, Total Filterable Residue (dissolved solids), and Total Suspended Solids Monitoring for these parameters is proposed to continue in order to evaluate the performance of the retention ponds. For more accuracy, flow rate shall be collected as a 24-hour estimated total. pH does not have any limits based on WQS because the pH at this outfall is governed by the slag that the landfill is built on, and is not considered a remediable condition. Zinc The Ohio EPA risk assessment (Table 13) places zinc in group 5. This placement, as well as the data in Tables 5-7, indicates that the reasonable potential to exceed WQS exists and limits are necessary to protect water quality. For this parameter, the PEQ is greater than 100 percent of the WLA. Pollutants that meet this requirement must have permit limits under OAC 3745-33-07(A)(1). Only the daily maximum zinc limits will be enforced through this outfall because the average monthly limits are equal and redundant. The concentration limit is based on the WLA; the loading limit is based on an average flow of 0.094 MGD and the concentration limit. A 48-month compliance schedule is proposed for the new limits. Ammonia (summer and winter) The Ohio EPA risk assessment (Table 13) places these parameters in Groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monthly monitoring is proposed for ammonia. Rainfall Monthly monitoring for rainfall is proposed to document how precipitation affects the effluent quality. Dry Days Preceding Precipitation Event, Duration of Stormwater Discharge, Cadmium, Chromium, Copper, Lead, and Nickel These pollutants are monitored annually according to the stormwater sampling requirements. Outfall 023’s stormwater sampling will be representative of the landfill leachate area’s stormwater discharge.

Aluminum, Antimony, Arsenic, Barium, Beryllium, Boron, Total Residual Chlorine, Free Cyanide, Fluoride, Iron, Manganese, Mercury, Molybdenum, Naphthalene, Nitrate+Nitrite, Phenol, Selenium, Silver, Strontium, Tetrachloroethylene, and Thallium The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. Monitoring requirements for fluoride are proposed to be removed. No new monitoring is proposed.

Internal Stations 613 and 633 Flow Rate, pH, Oil and Grease, BOD5, Chemical Oxygen Demand, and Sulfate

Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment system. Total Suspended Solids Based on BTJ, limits are proposed for this parameter. Limits shall continue for Outfalls 613 and 633.


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Internal Stations 643 and 653 Flow Rate, pH, Oil and Grease, BOD5, Chemical Oxygen Demand, Total Suspended Solids, and Sulfate Monitoring for these parameters is proposed to continue in order to evaluate the performance of the treatment system. Outfall 024

Flow Rate Monitoring for this parameter is proposed to continue in order to evaluate the performance of the treatment plant. pH Limits proposed for pH are based on WQS (OAC 3745-1-07). Precipitation, Dry Days Preceding Precipitation Event, Stormwater Discharge Duration, Total Filterable Residue, Total Suspended Solids, Oil & Grease, Cadmium, Chromium, Copper, Lead, Nickel, and Zinc These pollutants are monitored annually according to the stormwater sampling requirements. Outfall 024’s stormwater sampling will be representative of the steel producing drainage area.

Aluminum, Ammonia, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Total Residual Chlorine, Free Cyanide, Fluoride, Iron, Manganese, Mercury, Molybdenum, Naphthalene, Nitrate+Nitrite, Phenol, Selenium, Silver, Strontium, Tetrachloroethylene, and Thallium, The Ohio EPA risk assessment (Table 13) places these parameters in groups 2 and 3. This placement, as well as the data in Tables 5-7, support that these parameters do not have the reasonable potential to contribute to WQS exceedances, and limits are not necessary to protect water quality. No new monitoring is proposed.

Whole Effluent Toxicity Reasonable Potential Evaluating the acute and chronic toxicity results in Table 8 and the provisions of 40 CFR Part 132, Appendix F, Procedure 6, yields the following results for water fleas (C. dubia):

Outfall 002 PEQmax = 7.84 TUa Outfall 022 PEQmax = 2.24 TUa

The only outfalls with toxicity data are outfalls 002 and 022. Toxicity tests were not conducted at any of the other outfalls at ArcelorMittal. The PEQmax for acute toxicity is calculated by taking the maximum reported acute toxicity at the outfalls and multiplying by a statistical factor listed in Procedure 6 (multiplying factor = 1.4). For chronic toxicity, the PEQmax is calculated by multiplying the acute toxicity PEQmax by a factor of 10. Reasonable potential for acute toxicity is demonstrated for C. dubia since these PEQ values exceed their WLA values of 0.33 TUa and the detection level of 1.0 TUa. Consistent with Procedure 6 and OAC 3745-33-07(B), the daily maximum limit of 1.0 TUa shall apply at both outfalls for C. dubia. In addition, C. dubia toxicity data at Outfall 002 demonstrates reasonable potential since its PEQ (78.4 TUc) exceeds the WLA (34.8 TUc). Consistent with Procedure 6 and OAC 3745-33-07(B), a daily maximum limit of 78.4 TUc applies to Outfall 002 for C. dubia. No limits or monitoring requirements are proposed for chronic toxicity because the acute toxicity limits will adequately restrict the toxicity of the discharge. Reasonable potential for acute toxicity is not demonstrated for fathead minnows (P. promelas) because all the reported data is below 1.0 TUa and are considered an estimated value. Therefore, the acute toxicity limit for P.


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promelas is proposed to be removed. In addition, acute toxicity monitoring for P. promelas is proposed to decrease from quarterly to annually. Intake Monitoring Requirements Monitoring for ammonia, flow and water temperature is proposed to apply year-round at intake monitoring stations 800, 801, 804, 806, and 808. Weekly flow rate at these stations will serve as supplementary data to the requirements in 40 CFR 122.21(r). Biweekly monitoring for water temperature is necessary because the Cuyahoga River has a history of exceeding the water quality criteria for water temperature. The additional data will further document improvement of impingement mortality and the thermal loadings contributed by ArcelorMittal. Monthly monitoring of ammonia is proposed to continue for the purpose of documenting the nutrient levels in the Cuyahoga River; this decision is supported by the fact that one of the causes of impairment at the Cuyahoga River is nutrients. For Intake Station 801, optional mercury monitoring is proposed so that ArcelorMittal can report results of all voluntary monitoring at this intake. This data will be compared with the mercury results at internal station 607 to determine how much mercury is generated through the blast furnace process operations. Non-Process Wastewater Outfalls Monitoring requirements and limits for non-process wastewater are still applicable at outfall 008. However, at outfalls 010 and 011, monitoring requirements will only apply when discharging process wastewater. The monitoring and reporting requirements for non-process wastewater outfalls 016 and 019 have been removed at ArcelorMittal’s request. While ArcelorMittal also requested that monitoring be removed for outfall 004, Ohio EPA has only included this outfall for stormwater monitoring purposes. Outfalls 004, 016, and 019 only discharged when the electrogalvanizing process was operating; because ArcelorMittal has not operated this process since 2006 and has no future plans to resume these operations, there is a low possibility that these discharging or reporting will be necessary at these outfalls. Other Additional Monitoring Requirements Additional monitoring requirements proposed at the final effluent, influent and upstream/downstream stations are included for all facilities in Ohio and vary according to the type and size of the discharge. In addition to permit compliance, this data is used to assist in the evaluation of effluent quality and treatment plant performance and for designing plant improvements and conducting future stream studies. OTHER REQUIREMENTS Dissolved Metal Translator Study If the permittee chooses to develop a DMT or water-effect ratio for cadmium, chromium, copper, lead, nickel, and zinc at the lower Cuyahoga River, the permittee shall follow the schedule presented in Part II of the permit. Low-Level Free Cyanide Testing Currently there are two approved methods for free cyanide listed in 40 CFR 136.3 that have quantification levels lower than any water quality-based effluent limits: - ASTM D7237-10 and OIA-1677-09 - Flow injection followed by gas diffusion amperometry These methods will allow Ohio EPA to make more reliable water quality-related decisions regarding free cyanide. Because the quantification levels are lower than any water quality-based effluent limits, it will also be possible to directly evaluate compliance with free cyanide limits. New NPDES permits no longer authorize the use of method 4500 CN-I from Standard Methods for free cyanide testing. The new permits require permittees to begin using one of these approved methods as soon as possible.


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If a permittee must use method 4500 CN-I during the transition to an approved method, they are instructed to report the results on their DMR and enter “Method 4500 CN-I” in the remarks section.

Cooling Water Intake Structure Compliance Under Section 316(b) of the federal CWA, cooling water intake structures (CWISs) are required to use best technology available (BTA) to minimize adverse environmental impact resulting from the operation of the intake. New rules were promulgated on October 14, 2014. These new rules state that ArcelorMittal Cleveland, which had applied for renewal in 2012 (prior to promulgation of the rule), shall submit information necessary to establish impingement mortality and BTA requirements for the subsequent permit. The CWISs are considered existing units at an existing facility and therefore must comply with 40 CFR 125, Subpart J. Because the renewal application was submitted prior to the promulgation of the rule, the only information submitted by the permittee regarding the CWISs were from 2009. The CWIS report has been summarized below.

Description of Intake Function o Intake 800 – East Side Strip Mill Wastewater Treatment Plant o Intake 801 – East Side No. C5-C6 Blast Furnaces and No. 3 Power House o Intake 804 – East Side Steel Plant Wastewater Treatment Plant Make-Up Water o Intake 806 – West Side Central Treatment Plant, Basic Oxygen Furnace, and Direct Hot

Continuous Cast o Intake 808 – West Side No. 1 Power House

Design Intake Flow Rates o Intake 800 – 10,000 gallons per minute (gpm), or 14.4 MGD o Intake 801 – 53,600 gpm, or 77.184 MGD o Intake 804 – 6,500 gpm, or 0.546 MGD o Intake 806 – 11,000 gpm, or 15.84 MGD o Intake 808 – 47,500 gpm, or 68.4 MGD

Actual Intake Flow Rates o Intake 800 – 5,000 gpm, or 7.2 MGD o Intake 801 – 35,000 gpm, or 50.4 MGD o Intake 804 – 900 gpm, or 0.0756 MGD o Intake 806 – 11,000 gpm, or 15.84 MGD o Intake 808 – 25,000 gpm, or 36.0 MGD

Percentage of Intake Flow Rate Used for Cooling Purposes o Intake 800 – 79.3% o Intake 801 – 84.7% o Intake 804 – 85.1% o Intake 806 – 96.6% o Intake 808 – 100%

Percentage of Intake Flow Rate Reduction Estimate o Intake 800 – 96.5% o Intake 801 – 19.4% o Intake 804 – 99.1% o Intake 806 – 96.6% o Intake 808 – 0%

Through-screen Design Intake Velocity (at mean water elevation) o Intake 800 – 0.35 ft/sec o Intake 801 – primary screen 0.22 ft/sec; secondary screen 1.10 ft/sec o Intake 804 – 1.48 ft/sec o Intake 806 – primary screen 0.37 ft/sec; secondary screen 0.72 ft/sec o Intake 808 – 1.49 ft/sec


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Through-screen Operating Intake Velocity (at mean water elevation) o Intake 800 – 0.17 ft/sec o Intake 801 – primary screen 0.15 ft/sec; secondary screen 0.72 ft/sec o Intake 804 – 0.21 ft/sec o Intake 806 – primary screen 0.37 ft/sec; secondary screen 0.72 ft/sec o Intake 808 – 0.78 ft/sec

Operation of the Cooling Water System o Intake 800 – 24 hours/day, 300 days/year o Intake 801 – 24 hours/day, 365 days/year o Intake 804 – 1.4 hours/day, 204 days/year o Intake 806 – 24 hours/day, 365 days/year o Intake 808 – 24 hours/day, 365 days/year

Operating Measures to Reduce Impingement o Intake 800 – Cooling water recycle systems reduce intake flow volume and velocity o Intake 801 – Cooling water recycle systems and water sprays at inlet to the screens o Intake 804 – Cooling water recycle systems reduce intake flow volume and velocity o Intake 806 – Cooling water recycle systems and water sprays at inlet to the screens o Intake 808 – Water sprays at river inlet to the screens and two air cannon

Screen Data

Intake 800 o Bar Screen at Pump House – 16’ wide x 21’6” high o Clear Space Opening – 3” with ½” bars o Bar screen with mechanical cleaning o Total surface area (at mean water elevation) – 64.44 ft2 o No traveling screen

Intake 801 o Primary Screen - Fixed Screen at the River

36’4” x 29’2” high made of five removable panels Five panels for a total width of 35 feet Each panel is made up of multiple frames covered with ¾” square mesh x 0.120” 304L

stainless steel wire o Secondary Screen - Traveling Screens at Pump House (downstream of fixed screen)

Four traveling screens, each 8’ wide x 24’9” deep Manufacturer – Envirex Material – 3/8” square openings with 0.120” 304L stainless steel wire Total surface area at mean water elevation – 108.97 ft2 (two screens)

Intake 804 o The river inlet has a 24” diameter line which runs to an open 3’2” wide x 3’6” deep open

launder o One Fixed Screen in Launder – 3’2” wide x 3’6” high with ½” bar and ¾” clear spacing o Total Surface Area (at mean water elevation) – 9.78 ft2

Intake 806 o Primary Screens – Two Fixed Screens at River

One screen 5’ wide x 8’ high Another screen 8’ x 8’ with a 4’ arch Total Surface Area (at mean water elevation) – 66.60 ft2 Invert elevation of fixed screens is at 562.40 ft

o Secondary Screens – Four Traveling Screens (downstream of primary screens)


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Two screens 5’6” wide x 20’6” high Two screens 6’6” wide x 20’6” high Manufacturer – Link Belt Material – 3/8” square opening with 0.120 stainless steel wire

Intake 808 o At the river is an approximately 34’ x 21’ high opening to the forebay of the screen house which

has two inlets each with a traveling screen o Two traveling screens each 10’ wide x 21’9” deep well o 16’ water depth at high water level, 12’9” water depth at low water level o Manufacturer – Envirex o Material – 29 baskets per screen made of #14 copper wire screen cloth with 3/8” square

openings o Total Surface Area (at mean water elevation) – 71.05 ft2

Based on this limited information, Ohio EPA has made an interim determination that the CWISs represent BTA in accordance with Section 316(b) of the CWA. For the 800, 801, and 806 intake stations, this BTJ conclusion has been reached based on the through screen intake design velocity less than the recommended compliance velocity in the rule (0.5 ft/s). For the 804 and 808 intake stations, this BTJ conclusion has been reached based on the low intake flow rate compared to the critical low flow of the receiving stream. Ohio EPA requires additional information prior to determining whether the CWIS represents BTA. To ensure that the facility remains compliant with Section 316(b), requirements for the submittal of the next permit application are included in Part II of the permit. ArcelorMittal Cleveland’s cooling water intake operations are not indicated as contributing to the river’s impairments.

Method Detection Limit The reported data for free cyanide and total residual chlorine shows that ArcelorMittal used an analytical method with a MDL that is not sensitive enough to properly evaluate the discharge with regard to the WLA for this parameter. As a result, Part II of the permit includes a condition requiring ArcelorMittal to use an analytical method with an appropriate MDL. Storm Water Compliance Parts IV, V, and VI have been included with the draft permit to ensure that any storm water flows from the facility site are properly regulated and managed. As an alternative to complying with Parts IV, V, and VI, the ArcelorMittal may seek permit coverage under the general permit for industrial storm water (permit # OHR000005) or submit a “No Exposure Certification.” Parts IV, V, and VI will be removed from the final permit if: 1) the ArcelorMittal submits a Notice of Intent (NOI) for coverage under the general permit for industrial storm water or submits a No Exposure Certification, 2) Ohio EPA determines that the facility is eligible for coverage under the general permit or meets the requirements for a No Exposure Certification, and 3) the determination by Ohio EPA can be made prior to the issuance of the final permit. New monitoring requirements for estimated flow, total precipitation, total dissolved solids, TSS, pH, copper, lead, zinc, and other parameters have been added to the stormwater outfalls. These stormwater pollutants were based on previous stormwater data (Attachment 6) and BTJ. Benchmarks proposed for cadmium, chromium, copper, lead, nickel and zinc are based on the most stringent IMZM water quality criteria within ArcelorMittal’s discharge area (e.g. Fish Passage Criteria). In lieu of monitoring each stormwater outfall, ArcelorMittal has requested that a majority of the stormwater outfalls be represented by other identical outfalls. Previously, ArcelorMittal’s representative stormwater outfalls included outfall 002 (finishing mill area), outfall 005 (ironmaking area), outfall 009 (slag processing and former coke plant area) and outfall 024 (steel producing area). Based on BTJ, the proposed representative stormwater sampling locations are Outfalls 004, 009, 021, 023, 024, and 045.


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The stormwater outfall reassignment is based on ArcelorMittal’s 2016 Stormwater Pollution Prevention Plan (SWPPP) (revised October 5, 2016). The outfalls were grouped based on the potential pollutant sources and exposed materials within the outfalls’ drainage areas. The identical outfalls associated with each sampling point are described in Part V.B of the proposed permit.

Representative Outfall

Identical Outfalls Description

004 008, 019, 030, 031, 032, 034, 035, 037, 038, 039, 040, 042, 043, 044

No exposed material within the area.

009 001, 010, 011, 017, 027, 029, 036, 041 Slag Processing and Handling

021 005, 014, 022, 033 Iron Producing Drainage Area

023 613, 633, 643, 653 Landfill Drainage Area

024 028 Steel Producing Drainage Area

045 (stormwater contributions to Outfall 002)

None Finishing Mill Drainage Area

Outfall Signage Part II of the permit includes requirements for the permittee to place and maintain a sign at each outfall to the Cuyahoga River providing information about the discharge. Signage at outfalls is required pursuant to OAC 3745-33-08(A).


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Figure 1. Location of ArcelorMittal Cleveland, Inc.

*ArcelorMittal Cleveland, Inc. does not have any downstream-nearfield monitoring or upstream monitoring stations.


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Figure 2. Diagram of Water Flows Figure 2- a. Metal Finishing, Hot Coating, Acid Pickling, and Cold Forming External Outfalls 001, 002, 003, 004, 016, and 019; Internal Stations 601 and 602; Intake 800

Note: All flow rates with the exception of the continuous monitoring locations are estimated values.

(see Figure 3-b)

(see Figure 3-c)

CONTINUES ON NEXT PAGE



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Figure 2-a. Metal Finishing, Hot Coating, Acid Pickling, and Cold Forming (continued) External Outfalls 001, 002, 003, 004, 016, and 019; Internal Stations 601 and 602; Intake 800

(see Figure 3-a)

Metals Removal System (see Figure 3-c)

Oily Waste Treatment (see Figure 3-b)

CONTINUES ON PREVIOUS PAGE



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Figure 2- b. Iron Blast Furnace

External Outfall 005; Internal Station 604; Intake 801




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Figure 2-b. Iron Blast Furnace (continued) External Outfall 005; Internal Station 604; Intake 801


Plant 5 & 6 Sludge Dewatering (see Figure 3-g)



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Figure 2- c. Stormwater Retention Ponds External Outfalls 008, 016, and 023; Internal Outfalls 613, 633, 643, 653

Cuy

ahog

a R

iver


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Figure 2- d. Continuous Casting, Basic Oxygen Furnace, Vacuum Degassing External Outfalls 010, 011, 017

(see Figure 3-d)




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Figure 2-d. Continuous Casting, Basic Oxygen Furnace, Vacuum Degassing (continued) External Outfalls 010, 011, and 017

(see Figure 3-e)


(see Figure 3-e)



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Figure 2- e. Number 1 Powerhouse Outfall 014; Intake 808


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Figure 2- f. Basic Oxygen Furnace External Outfalls 021, 022, and 024; Internal Outfall 622; Intake 806




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Figure 2-f. Basic Oxygen Furnace (continued) External Outfalls 021, 022, and 024; Internal Station 622; Intake 806

Central Water Treatment Plant (see Figure 3-h)




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Figure 3. Treatment System Diagrams Figure 3- a. Hot Mill Water Treatment Plant System

BW = Backwash CT = Cooling Tower HDGL = Hot Dip Galvanizing Line HM = Hot Mill


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Figure 3- b. Cold Mill Oily Waste Treatment System Water Plant


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Figure 3- c. Metals System Water Treatment

HSM = Hot Strip Mill


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Figure 3- d. Ladle Metallurgy Furnace Treatment System

LMF = Ladle Metallurgy Furnace


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Figure 3- e. Steel Plant Water Treatment System

BD = Blowdown LMF = Ladle Metallurgy Furnace


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Figure 3- f. Steel Plant Steam Condensate System

SC = Steam Condensate


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Figure 3- g. Blast Furnace Gas Scrubber Water Treatment Plant

BF = Blast Furnace


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Figure 3- h. Central Water Treatment Plant


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Figure 4. Lower Cuyahoga River Study Area


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Table 1. Monitoring Stations, Treatment Processes, Discharge Points, and Flow Rates

Station # Wastewater Source Treatment Utilized Discharge/ Receiving Stream

95th Percentile Flow Rate (MGD) a

001

NCCW (emergency overflow from 84” cold mill area)

GW and SW (including off-site sources) CW for acid station safety shower

(emergency only) pH adjustment Cuyahoga River 0.37

002

Internal Outfalls 601 and 602 NCCW GW and SC SW (hot dip galvanizing lines) None Cuyahoga River 5.655

003

GW and SC SW (finishing mills and

electrogalvanizing lines) None Cuyahoga River Variable

004

NCCW GW and SC SW (finishing mills and

electrogalvanizing lines) Sanitary Emergency Overflow CW for acid station safety shower

(emergency only) pH Adjustment Cuyahoga River 0.9088

005

Internal Outfall 604 NCCW GW, SW, and CW Emergency overflow (prior to treatment) Chlorination and Dechlorination Cuyahoga River 45.2

008 GW, SW, and SC None Cuyahoga River 0.0045

010

GW and SW Emergency overflow from No. 1

steelmaking recycle system None Cuyahoga River 0.504

011

GW and SW Emergency overflow from No. 1

steelmaking recycle system None Cuyahoga River Variable


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014

NCCW (No. 1 powerhouse) GW, SW, SC, CW Water softener (No. 1 powerhouse) Filter and blowdown wastewaters (No. 1

powerhouse) Storm sewer (Cleveland West 3rd Street) Chlorination and Dechlorination Cuyahoga River 46.08

016 GW and SW SC (strip mill, intermittent) None Cuyahoga River Variable

017

Treated process wastewater o No. 1 basic oxygen furnace o Vacuum degassing o Continuous casting

Service water GW and SW Cooling tower blowdown

Settling Neutralization Chemical precipitation Coagulation Flocculation Rapid sand filtration Vacuum filtration Chlorination Cuyahoga River 0.665

019 GW and SW SC (intermittent) None Cuyahoga River Variable

022

Internal Outfall 622 NCCW GW and SW

pH adjustment (currently being installed) Cuyahoga River 2.92

023

Leachate (SWDF sedimentation ponds No. 1, 3, 4, and 5)

GW and SW Settling Cuyahoga River 0.0938

024

GW and SW CW for acid station safety shower

(emergency only) pH adjustment Cuyahoga River 0.8


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601

Treated process wastewater o 84” hot strip mill o 84” pickle line and fume scrubber o Electrogalvanizing line o Hot dip galvanizing line

Treated miscellaneous non-process flows

Settling Neutralization Aeration Precipitation Coagulation Sand filtration Multimedia filtration Outfall 002 2.03

602

Treated process wastewater o 84” temper mill o 84” tandem mill o 84” hot strip mill o Hot dip galvanizing line and fume

scrubber Treated miscellaneous non-process flows

Neutralization Oil removal Flocculation Floatation Outfall 002 2.54

603 Outfalls 601 and 602 Not Applicable Calculated Outfall 4.52

604 Blast furnace recycle system blowdown Miscellaneous non-process flows

Neutralization Precipitation Coagulation Settling Outfall 005 0.352

613 SWDF storm water retention pond No. 1 Settling Outfall 023 0.033

622

Treated process wastewater o Continuous casting o Cooling tower blowdown

GW SW (off-site)

Neutralization Precipitation Coagulation Settling Filter press Outfall 022 1.892



653 SWDF storm water retention pond No. 5 Settling Outfall 023 0.071 a 95th percentile of the monthly average flow rates between January 2015 – December 2015 CW = City Water GW = Groundwater NCCW = Non-contact Cooling Water SC = Steam Condensate SW = Storm Water SWDF = Solid Waste Disposal Facility


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Table 2. Storm Water Outfalls & Intakes at ArcelorMittal

Station # Representative Sampling Basis

009 Storm water and ground water from the former coke plant area

015 Storm water and ground water discharge, including off-property sources

021 Outfall of storm water and ground water at the North pump station, including off-property sources

027 Storm water and ground water. Outfall located at station 3 ore dock.

028 Storm water from Area 1: No. 1 basic oxygen furnace, caster and steel wastewater treatment plant, box culvert city sewer (Mark No. 1)

029 Storm water from Area 1: No. 1 basic oxygen furnace, caster and steel wastewater treatment plant, caster area drainage (Mark No. 1A)

030 Runoff from parking lot (Mark 8)

031 Drainage from railroad tracks via 8” CMP (Mark 11)

032 Campbell Road drainage, 12” sheeting opening (Mark 17)

033 Storm water from Area 5: Yucca Flats, No. 2 coke plant and Burke Brook Culvert (Mark 22)

035 Drainage from approximately 22 miscellaneous curb drains (Mark 28)

036 96” RCP county storm sewer (Mark 53)

037 Drainage from strip mill via 48” CMP (Mark 59)

038 Drainage from strip mill via 42” RCP (Mark 60)

039 Drainage from slabbing mill via 30” RCP (Mark 63)

040 Area runoff (Mark 65)

041 Storm water from Area 7: West side blast furnace and idled E.A.F. and No. 2 slabbing mill. C3 blast furnace drainage via 48” RCP (Mark 66)

042 Area runoff (Mark 68)

043 Drainage from railroad track via 6” CMP (Mark 88)

044 Runoff from Campbell Road (Mark 89)

800 Intake East side Strip Mill Treatment Plant

801 Intake East side C5 and C6 blast furnace (6 and 7 pump house)

804 Intake East side Steel Plant Wastewater Treatment Plant Make-Up Water

806 Intake West side Central Treatment Plant

808 Intake West side power house a = representative sampling outfall per Part V of the permit. Discharge from stormwater outfalls shall be free from process wastewater.


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Table 3. Effluent Violations

Outfall 001

Parameter 2012 a 2013 2014 2015 2016 2017 b

pH (maximum) 0 0 1 0 0 0

Total 0 0 1 0 0 0

Outfall 002

Parameter 2012 a 2013 2014 2015 2016 2017 b

pH (maximum) 1 0 0 0 0 0 Acute Toxicity (Ceriodaphnia dubia)

1 0 0 0 2 0

Total 2 0 0 0 2 0

Outfall 017

Parameter 2012 a 2013 2014 2015 2016 2017 b

pH (maximum) 0 0 0 0 0 1 Zinc (max. concentration)

1 0 0 1 1 0

Total 1 0 0 1 1 1

a April – December 2012 b January – July 2017


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Table 4. Average Annual Effluent Flow Rates Outfall 002 Flow (MGD)

Year Observations 50th Percentile 95th Percentile Maximum

2011 364 4.9835 5.7309 4.9263

2012 366 5.345 6.791 5.4816

2013 365 4.002 5.6862 6.376

2014 365 4.366 5.4664 5.983

2015 365 4.066 4.6336 6.239

2011 - 2015 1,825 4.661 6.0598 7.139

2016 366 4.144 4.7373 5.321

Jan.-July 2017 212 3.556 4.3478 4.471

April 2012 – July 2017 1,948 4.2485 5.8756 7.139

Outfall 005 Flow (MGD)


2011 364 36.032 38.243 45.264

2012 366 36.12 42.205 46.96

2013 365 39.5 43.728 58.304

2014 365 38.148 42.548 50.09

2015 365 44.03 48.1 51.31

2011 – 2015 1,825 38.148 46.708 58.304

2016 366 46.14 49.308 68.05

Jan.-July 2017 212 46.463 50.861 54.131

April 2012 – July 2017 1,948 41.62 48.507 68.05



2011 365 46.08 46.08 46.08

2012 366 46.08 46.08 46.08

2013 365 46.08 46.08 46.08

2014 365 46.08 46.08 46.08

2015 365 46.08 46.08 46.08

2011 – 2015 1,826 46.08 46.08 46.08

2016 366 46.08 46.08 46.08

Jan.-July 2017 212 46.08 46.08 46.08

April 2012 – July 2017 1,948 46.08 46.08 46.08 MGD = million gallons per day


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Table 4. Average Annual Effluent Flow Rates (continued)



2011 357 0.264 1.017 2.085

2012 237 0.135 0.4402 2.141

2013 243 0.208 0.7674 1.465

2014 302 0.321 1.221 1.708

2015 293 0.237 0.9742 1.839

2011 – 2015 1,432 0.23 0.98735 2.141

2016 350 0.412 0.8713 2.152

Jan.-July 2017 179 0.296 0.8313 1.344

April 2012 – July 2017 1,548 0.275 0.9413 2.152


Year Observations 50th Percentile 95th Percentile Maximum 2011 364 1.02 2.304 7.886

2012 366 1.8005 3.27 5.047

2013 365 2.134 3.8928 7.071

2014 365 2.232 3.2026 6.285

2015 365 2.05 4.3422 8.294

2011 – 2015 1,825 1.999 3.5424 8.294

2016 366 2.145 3.4035 4.276

Jan.-July 2017 212 2.4905 5.192 8.985

April 2012 – July 2017 1,948 2.161 3.8567 8.985



2012 12 0.01728 0.04752 0.0792

2013 12 0.013695 0.19127 0.374

2014 12 0.01056 0.04171 0.068

2015 12 0.00576 0.091575 0.0979

2011 – 2015 60 0.0144 0.093815 0.374

2016 11 0.0144 0.0864 0.0864

Jan.-July 2017 7 0.0144 0.16416 0.1728

April 2012 – July 2017 63 0.01225 0.09675 0.374 MGD = million gallons per day


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Internal Station 601 Flow (MGD)


2012 366 1.552 2.0575 2.392

2013 365 1.549 2.332 2.946

2014 365 1.411 1.7412 2.047

2015 365 1.736 2.0738 2.432

2011 – 2015 1,826 1.5715 2.1363 3.09

2016 366 1.6105 2.1255 2.514

Jan.-July 2017 212 1.3685 1.597 1.767

April 2012 – July 2017 1,948 1.537 2.1473 2.946



2012 366 2.4975 2.6208 3.924

2013 365 1.779 2.7292 3.917

2014 365 1.778 2.0424 2.693

2015 365 1.748 1.8888 2.221

2011 – 2015 1,826 1.8805 2.6048 4.32

2016 366 1.817 2.0665 2.172

Jan.-July 2017 212 1.7895 2.124 2.477

April 2012 – July 2017 1,948 1.8065 2.5607 3.924



2012 366 4.0765 4.542 5.288

2013 365 3.37 4.9886 6.122

2014 365 3.209 3.658 4.11

2015 365 3.457 3.7828 4.213

2011 - 2015 1,826 3.5665 4.5193 6.122

2016 366 3.422 4.0165 4.49

Jan.-July 2017 212 3.1435 3.6124 4.028



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2012 366 0.2275 0.3655 0.584

2013 365 0.244 0.4536 0.738

2014 365 0.226 0.3876 0.645

2015 365 0.22 0.3986 0.654

2011 – 2015 1,826 0.243 0.426 0.856

2016 366 0.168 0.31175 0.543

Jan.-July 2017 212 0.164 0.238 0.51

April 2012 – July 2017 1948 0.209 0.3873 0.738



2012 366 1.272 2.262 3.604

2013 365 1.433 2.0708 4.052

2014 365 1.463 2.2026 3.326

2015 365 1.426 2.384 3.877

2011 – 2015 1,826 1.324 2.1365 4.052

2016 366 1.4545 2.2373 3.202

Jan.-July 2017 212 1.61 2.5145 3.192



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Table 5. Effluent Characterization Based on Form 2C Data Table 5- a. Outfall 001 (Form 2C Data)

Effluent Parameter Units Result No. of Analyses Date Biological Oxygen Demand mg/L 2.0 1 4/11/2012 Chemical Oxygen Demand mg/L 61.9 1 4/11/2012 Total Organic Carbon mg/L 4.5 1 4/11/2012 Total Suspended Solids mg/L < 4.0 1 4/11/2012 Ammonia a mg/L 0.3 1 4/11/2012 Flow b MGD 0.091 1 4/11/2012 Temperature °C 10.6 1 4/11/2012 pH b S.U. 7.65 1 4/3/2012 Oil and Grease mg/L < 2.40 1 4/11/2012 Aluminum µg/L 62.2 1 4/11/2012 Antimony µg/L < 10 1 4/11/2012 Arsenic µg/L < 10 1 4/11/2012 Barium µg/L 107 1 4/11/2012 Beryllium µg/L < 10 1 4/11/2012 Boron µg/L 190 1 4/11/2012 Bromide mg/L < 0.100 1 4/11/2012 Cadmium µg/L < 10 1 4/11/2012 Chlorine, total residual mg/L < 0.01 1 4/11/2012 Chromium µg/L 17.2 1 4/11/2012 Copper µg/L < 10 1 4/11/2012 Cyanide, total µg/L < 10 1 4/11/2012 Fluoride mg/L 1.89 1 4/11/2012 Iron µg/L 300 1 4/11/2012 Lead µg/L < 10 1 4/11/2012 Magnesium µg/L 5,960 1 4/11/2012 Manganese µg/L 148 1 4/11/2012 Mercury µg/L < 0.025 1 4/11/2012 Molybdenum µg/L 22.4 1 4/11/2012 Napthalene µg/L < 10 1 4/11/2012 Nickel µg/L < 10 1 4/11/2012 Nitrate + Nitrite mg/L 0.706 1 4/11/2012 Phenols, total µg/L < 10 1 4/11/2012 Phosphorus mg/L < 0.04 1 4/11/2012 Selenium µg/L < 10 1 4/11/2012 Silver µg/L < 10 1 4/11/2012 Sulfate mg/L 503 1 4/11/2012 Tetrachloroethylene µg/L < 5 1 4/11/2012 Thallium µg/L < 10 1 4/11/2012 Titanium µg/L < 10 1 4/11/2012 Zinc µg/L 160 1 4/11/2012

a = For parameters monitored seasonally: summer months are May to October, winter months are November to April b = The data point(s) is included in the self-monitoring data in Table 6 MGD = million gallons per day


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Table 5- b. Outfall 002 (Form 2C Data)

Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L 15.1 1 4/11/2012 Chemical Oxygen Demand mg/L 52.6 1 4/11/2012 Total Organic Carbon mg/L 8.28 1 4/11/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a mg/L 0.28 1 4/11/2012 Flow b MGD 5.071 1 4/11/2012 Temperature °C 24.7 1 4/11/2012 pH b S.U. 8.04 1 4/11/2012 Oil and Grease b mg/L -- -- -- Aluminum µg/L 52 1 4/11/2012 Antimony µg/L < 10 1 4/11/2012 Arsenic µg/L < 10 1 4/11/2012 Barium µg/L 32 1 4/11/2012 Beryllium µg/L < 10 1 4/11/2012 Boron µg/L 115 1 4/11/2012 Bromide mg/L 0.485 1 4/11/2012 Cadmium µg/L < 10 1 4/11/2012 Chlorine, total residual mg/L < 0.01 1 4/11/2012 Chromium µg/L < 10 1 4/11/2012 Copper µg/L < 10 1 4/11/2012 Cyanide, total µg/L < 10 1 4/11/2012 Fluoride mg/L 1.18 1 4/11/2012 Iron µg/L 1,060 1 4/11/2012 Lead µg/L < 10 1 4/11/2012 Magnesium µg/L 9,820 1 4/11/2012 Manganese µg/L 65.7 1 4/11/2012 Mercury µg/L < 0.025 1 4/11/2012 Molybdenum µg/L 14.1 1 4/11/2012 Napthalene µg/L < 10 1 4/11/2012 Nickel µg/L 12.9 1 4/11/2012 Nitrate + Nitrite mg/L 0.022 1 4/11/2012 Phenols, total µg/L < 10 1 4/11/2012 Phosphorus mg/L 0.196 1 4/11/2012 Selenium µg/L < 10 1 4/11/2012 Silver µg/L < 10 1 4/11/2012 Sulfate mg/L 39.6 1 4/11/2012 Tetrachloroethylene µg/L < 5 1 4/11/2012 Thallium µg/L < 10 1 4/11/2012 Titanium µg/L 12.5 1 4/11/2012 Zinc b µg/L -- -- --



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Table 5- c. Outfall 005 (Form 2C Data)

Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L 2.6 1 4/19/2012 Chemical Oxygen Demand mg/L 33.6 1 4/19/2012 Total Organic Carbon mg/L 9.18 1 4/19/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a b mg/L 0.98 1 4/19/2012 Flow b MGD 29.96 1 4/19/2012 Temperature b °C -- -- -- pH b S.U. 8.14 1 4/19/2012 Oil and Grease mg/L < 2.20 1 4/19/2012 Aluminum µg/L 111 1 4/19/2012 Antimony µg/L < 10 1 4/19/2012 Arsenic µg/L < 10 1 4/19/2012 Barium µg/L 37.1 1 4/19/2012 Beryllium µg/L < 10 1 4/19/2012 Boron µg/L 175 1 4/19/2012 Bromide mg/L 0.628 1 4/19/2012 Cadmium µg/L < 10 1 4/19/2012 Chlorine, total residual b mg/L < 0.01 1 4/19/2012 Chromium µg/L < 10 1 4/19/2012 Copper µg/L < 10 1 4/19/2012 Cyanide, total b µg/L < 10 1 4/19/2012 Fluoride mg/L 0.717 1 4/19/2012 Iron µg/L 467 1 4/19/2012 Lead b µg/L -- -- -- Magnesium µg/L 16,300 1 4/19/2012 Manganese µg/L 66.8 1 4/19/2012 Mercury b µg/L -- -- -- Molybdenum µg/L < 10 1 4/19/2012 Napthalene µg/L < 10 1 4/19/2012 Nickel µg/L < 10 1 4/19/2012 Nitrate + Nitrite mg/L 7.28 1 4/19/2012 Phenols, total µg/L 55 1 4/19/2012 Phosphorus mg/L 0.258 1 4/19/2012 Selenium µg/L < 10 1 4/19/2012 Silver µg/L < 10 1 4/19/2012 Sulfate mg/L 82.2 1 4/19/2012 Tetrachloroethylene µg/L < 5 1 4/19/2012 Thallium µg/L < 10 1 4/19/2012 Titanium µg/L < 10 1 4/19/2012 Zinc b µg/L -- -- --



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Table 5- d. Outfall 014 (Form 2C Data)

Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L < 2.0 1 5/2/2012 Chemical Oxygen Demand mg/L 35.2 1 5/2/2012 Total Organic Carbon mg/L 8.09 1 5/2/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a b mg/L -- -- -- Flow b MGD 46.08 1 5/2/2012 Temperature b °C -- -- -- pH b S.U. -- -- -- Oil and Grease b mg/L -- -- -- Aluminum µg/L 348 1 5/2/2012 Antimony µg/L < 10 1 5/2/2012 Arsenic µg/L < 10 1 5/2/2012 Barium µg/L 36.8 1 5/2/2012 Beryllium µg/L < 10 1 5/2/2012 Boron µg/L 105 1 5/2/2012 Bromide mg/L 0.364 1 5/2/2012 Cadmium µg/L < 10 1 5/2/2012 Chlorine, total residual b mg/L < 0.01 1 5/1/2012 Chromium µg/L < 10 1 5/2/2012 Copper µg/L < 10 1 5/2/2012 Cyanide, total µg/L < 10 1 5/2/2012 Fluoride mg/L 0.393 1 5/2/2012 Iron µg/L 986 1 5/2/2012 Lead µg/L < 10 1 5/2/2012 Magnesium µg/L 12,000 1 5/2/2012 Manganese µg/L 69.5 1 5/2/2012 Mercury µg/L < 0.025 1 5/2/2012 Molybdenum µg/L < 10 1 5/2/2012 Napthalene µg/L < 10 1 5/2/2012 Nickel µg/L < 10 1 5/2/2012 Nitrate + Nitrite mg/L 3.21 1 5/2/2012 Phenols, total µg/L < 10 1 5/2/2012 Phosphorus mg/L 0.136 1 5/2/2012 Selenium µg/L < 10 1 5/2/2012 Silver µg/L < 10 1 5/2/2012 Sulfate mg/L 64.1 1 5/2/2012 Tetrachloroethylene µg/L < 5 1 5/2/2012 Thallium µg/L < 10 1 5/2/2012 Titanium µg/L < 10 1 5/2/2012 Zinc b µg/L -- -- --



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Table 5- e. Outfall 017 (Form 2C Data)

Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L < 2.0 1 4/24/2012 Chemical Oxygen Demand mg/L 50.8 1 4/24/2012 Total Organic Carbon mg/L 10.8 1 4/24/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a mg/L 0.31 1 4/24/2012 Flow b MGD 0.11 1 4/24/2012 Temperature b °C -- -- -- pH b S.U. 7.9 1 4/24/2012 Oil and Grease b mg/L -- -- -- Aluminum µg/L 375 1 4/24/2012 Antimony µg/L 92.6 1 4/24/2012 Arsenic µg/L < 10 1 4/24/2012 Barium µg/L 168 1 4/24/2012 Beryllium µg/L < 10 1 4/24/2012 Boron µg/L 504 1 4/24/2012 Bromide mg/L 7.13 1 4/24/2012 Cadmium µg/L < 10 1 4/24/2012 Chlorine, total residual b mg/L < 0.01 1 4/23/2012 Chromium µg/L < 10 1 4/24/2012 Copper µg/L < 10 1 4/24/2012 Cyanide, total µg/L 13 1 4/24/2012 Fluoride mg/L 64.3 1 4/24/2012 Iron µg/L 509 1 4/24/2012 Lead b µg/L -- -- -- Magnesium µg/L 12,100 1 4/24/2012 Manganese µg/L 52.1 1 4/24/2012 Mercury b µg/L -- -- -- Molybdenum µg/L 344 1 4/24/2012 Napthalene µg/L < 10 1 4/24/2012 Nickel µg/L < 10 1 4/24/2012 Nitrate + Nitrite mg/L < 0.01 1 4/24/2012 Phenols, total µg/L 75 1 4/24/2012 Phosphorus mg/L 0.778 1 4/24/2012 Selenium µg/L < 10 1 4/24/2012 Silver µg/L < 10 1 4/24/2012 Sulfate mg/L 515 1 4/24/2012 Tetrachloroethylene µg/L < 5 1 4/24/2012 Thallium µg/L < 10 1 4/24/2012 Titanium µg/L < 10 1 4/24/2012 Zinc b µg/L -- -- --



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Table 5- f. Outfall 022 (Form 2C Data)

Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L < 2.0 1 6/19/2012 Chemical Oxygen Demand mg/L 21.9 1 6/19/2012 Total Organic Carbon mg/L 7.44 1 6/19/2012 Total Suspended Solids mg/L 4.00 1 6/19/2012 Ammonia a mg/L 0.41 1 6/19/2012 Flow b MGD 1.771 1 6/19/2012 Temperature b °C -- -- -- pH b S.U. -- -- -- Oil and Grease b mg/L -- -- -- Aluminum µg/L 90.3 1 6/19/2012 Antimony µg/L < 10 1 6/19/2012 Arsenic µg/L < 10 1 6/19/2012 Barium µg/L 20 1 6/19/2012 Beryllium µg/L < 10 1 6/19/2012 Boron µg/L 236 1 6/19/2012 Bromide mg/L 0.557 1 6/19/2012 Cadmium µg/L < 10 1 6/19/2012 Chlorine, total residual b mg/L < 0.01 1 6/19/2012 Chromium µg/L < 10 1 6/19/2012 Copper b µg/L -- -- -- Cyanide, total b µg/L < 10 1 6/19/2012 Fluoride mg/L 2.25 1 6/19/2012 Iron µg/L 145 1 6/19/2012 Lead b µg/L -- -- -- Magnesium µg/L 10,300 1 6/19/2012 Manganese µg/L 23.7 1 6/19/2012 Mercury b µg/L -- -- -- Molybdenum µg/L 18.3 1 6/19/2012 Napthalene µg/L < 10 1 6/19/2012 Nickel µg/L < 10 1 6/19/2012 Nitrate + Nitrite mg/L 5.02 1 6/19/2012 Phenols, total µg/L 34 1 6/19/2012 Phosphorus mg/L < 0.040 1 6/19/2012 Selenium b µg/L -- -- -- Silver µg/L < 10 1 6/19/2012 Sulfate mg/L 109 1 6/19/2012 Tetrachloroethylene µg/L < 5 1 6/19/2012 Thallium µg/L < 10 1 6/19/2012 Titanium µg/L < 10 1 6/19/2012 Zinc b µg/L -- -- --



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Table 5- g. Outfall 023 (Form 2C Data) Effluent Parameter Units Result Parameter Date Biological Oxygen Demand b mg/L -- -- -- Chemical Oxygen Demand b mg/L -- -- -- Total Organic Carbon mg/L 12.1 1 5/11/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a b mg/L -- -- -- Flow b MGD 0.004 1 5/14/2012 Temperature °C 16.5 1 5/11/2012 pH b S.U. -- -- -- Oil and Grease b mg/L -- -- -- Aluminum µg/L 63.1 1 5/11/2012 Antimony µg/L < 10 1 5/11/2012 Arsenic µg/L < 10 1 5/11/2012 Barium µg/L 16 1 5/11/2012 Beryllium µg/L < 10 1 5/11/2012 Boron µg/L 121 1 5/11/2012 Bromide mg/L 2.48 1 5/11/2012 Cadmium µg/L < 10 1 5/11/2012 Chlorine, total residual mg/L < 0.01 1 5/11/2012 Chromium µg/L < 10 1 5/11/2012 Copper µg/L < 10 1 5/11/2012 Cyanide, total µg/L < 10 1 5/11/2012 Fluoride b mg/L 1.87 1 5/14/2012 Iron µg/L 168 1 5/11/2012 Lead µg/L < 10 1 5/11/2012 Magnesium µg/L 18,100 1 5/11/2012 Manganese µg/L 13.1 1 5/11/2012 Mercury µg/L < 0.025 1 5/11/2012 Molybdenum µg/L 61.5 1 5/11/2012 Napthalene µg/L < 10 1 5/11/2012 Nickel µg/L < 10 1 5/11/2012 Nitrate + Nitrite mg/L 0.354 1 5/11/2012 Phenols, total µg/L < 10 1 5/11/2012 Phosphorus mg/L < 0.040 1 5/11/2012 Selenium µg/L < 10 1 5/11/2012 Silver µg/L < 10 1 5/11/2012 Sulfate mg/L 270 1 5/11/2012 Tetrachloroethylene µg/L < 5 1 5/11/2012 Thallium µg/L < 10 1 5/11/2012 Titanium µg/L < 10 1 5/11/2012 Zinc b µg/L -- -- --



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Table 5- h. Internal Station 601 (Form 2C Data) Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L 2.5 1 4/11/2012 Chemical Oxygen Demand mg/L 41.8 1 4/11/2012 Total Organic Carbon mg/L 7.48 1 4/11/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a mg/L 0.45 1 4/11/2012 Flow b MGD 1.458 1 4/11/2012 Temperature °C 22.5 1 4/11/2012 pH b S.U. 7.55 1 4/11/2012 Oil and Grease b mg/L -- -- -- Aluminum µg/L < 50 1 4/11/2012 Antimony µg/L < 10 1 4/11/2012 Arsenic µg/L < 10 1 4/11/2012 Barium µg/L 36.8 1 4/11/2012 Beryllium µg/L < 10 1 4/11/2012 Boron µg/L 64.3 1 4/11/2012 Bromide mg/L 0.471 1 4/11/2012 Cadmium µg/L < 10 1 4/11/2012 Chlorine, total residual mg/L AA < 0.01 1 4/11/2012 Chromium µg/L < 10 1 4/11/2012 Copper µg/L < 10 1 4/11/2012 Cyanide, total b µg/L < 10 1 4/3/2012 Fluoride mg/L 0.634 1 4/11/2012 Iron µg/L 3,580 1 4/11/2012 Lead µg/L -- -- -- Magnesium µg/L 9,180 1 4/11/2012 Manganese µg/L 45.2 1 4/11/2012 Mercury µg/L < 0.025 1 4/11/2012 Molybdenum µg/L 14.3 1 4/11/2012 Napthalene µg/L < 10 1 4/11/2012 Nickel µg/L 21.3 1 4/11/2012 Nitrate + Nitrite mg/L 7.05 1 4/11/2012 Phenols, total µg/L < 10 1 4/11/2012 Phosphorus mg/L 0.08 1 4/11/2012 Selenium µg/L < 10 1 4/11/2012 Silver µg/L < 10 1 4/11/2012 Sulfate mg/L 79.2 1 4/11/2012 Tetrachloroethylene µg/L < 5 1 4/11/2012 Thallium µg/L < 10 1 4/11/2012 Titanium µg/L 25.3 1 4/11/2012 Zinc b µg/L -- -- --



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Table 5- i. Internal Station 602 (Form 2C Data) Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L 29.5 1 4/11/2012 Chemical Oxygen Demand mg/L 2.5 1 4/11/2012 Total Organic Carbon mg/L 18 1 4/11/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a mg/L 0.22 1 4/11/2012 Flow b MGD 2.727 1 4/11/2012 Temperature °C 27.2 1 4/11/2012 pH b S.U. 8.32 1 4/11/2012 Oil and Grease b mg/L -- -- -- Aluminum µg/L < 50 1 4/11/2012 Antimony µg/L < 10 1 4/11/2012 Arsenic µg/L < 10 1 4/11/2012 Barium µg/L 28 1 4/11/2012 Beryllium µg/L < 10 1 4/11/2012 Boron µg/L 135 1 4/11/2012 Bromide mg/L < 0.1 1 4/11/2012 Cadmium µg/L < 10 1 4/11/2012 Chlorine, total residual mg/L < 0.01 1 4/11/2012 Chromium µg/L < 10 1 4/11/2012 Copper µg/L < 10 1 4/11/2012 Cyanide, total b µg/L < 10 1 4/3/2012 Fluoride mg/L 0.58 1 4/11/2012 Iron µg/L 517 1 4/11/2012 Lead b µg/L -- -- -- Magnesium µg/L 9010 1 4/11/2012 Manganese µg/L 72.2 1 4/11/2012 Mercury µg/L < 0.025 1 4/11/2012 Molybdenum µg/L 13.1 1 4/11/2012 Napthalene µg/L < 10 1 4/11/2012 Nickel µg/L 14.2 1 4/11/2012 Nitrate + Nitrite mg/L 2.05 1 4/11/2012 Phenols, total µg/L < 10 1 4/11/2012 Phosphorus mg/L 0.254 1 4/11/2012 Selenium µg/L < 10 1 4/11/2012 Silver µg/L < 10 1 4/11/2012 Sulfate mg/L 35.7 1 4/11/2012 Tetrachloroethylene µg/L < 5 1 4/11/2012 Thallium µg/L < 10 1 4/11/2012 Titanium µg/L 15 1 4/11/2012 Zinc b µg/L -- -- --



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Table 5- j. Calculated Station 603 (Form 2C Data) Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L 12.6 1 4/19/2012 Chemical Oxygen Demand mg/L 81.8 1 4/19/2012 Total Organic Carbon mg/L 4.37 1 4/19/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a b mg/L -- -- -- Flow b MGD 0.182 1 4/19/2012 Temperature °C 30.8 1 4/19/2012 pH b S.U. 8.02 1 4/19/2012 Oil and Grease c mg/L -- -- -- Aluminum µg/L 325 1 4/19/2012 Antimony µg/L 24.1 1 4/19/2012 Arsenic µg/L 12.9 1 4/19/2012 Barium µg/L 149 1 4/19/2012 Beryllium µg/L < 10 1 4/19/2012 Boron µg/L 477 1 4/19/2012 Bromide mg/L 16.8 1 4/19/2012 Cadmium µg/L < 10 1 4/19/2012 Chlorine, total residual mg/L < 0.01 1 4/19/2012 Chromium µg/L < 10 1 4/19/2012 Copper µg/L < 10 1 4/19/2012 Cyanide, total b µg/L -- -- -- Fluoride mg/L 19 1 4/19/2012 Iron µg/L 2,210 1 4/19/2012 Lead b µg/L -- -- -- Magnesium µg/L 54,700 1 4/19/2012 Manganese µg/L 914 1 4/19/2012 Mercury µg/L < 0.025 1 4/19/2012 Molybdenum µg/L 19.3 1 4/19/2012 Napthalene µg/L < 10 1 4/19/2012 Nickel µg/L < 10 1 4/19/2012 Nitrate + Nitrite mg/L 2.05 1 4/19/2012 Phenols, total b µg/L -- -- -- Phosphorus mg/L 0.178 1 4/19/2012 Selenium µg/L < 10 1 4/19/2012 Silver µg/L < 10 1 4/19/2012 Sulfate mg/L 177 1 4/19/2012 Tetrachloroethylene µg/L < 5 1 4/19/2012 Thallium µg/L 22.1 1 4/19/2012 Titanium µg/L < 10 1 4/19/2012 Zinc b µg/L -- -- --

a = For parameters monitored seasonally: summer months are May to October, winter months are November to April b = The data point(s) is included in the self-monitoring data in Table 6 c = This parameter was not sampled MGD = million gallons per day


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Table 5- k. Internal Station 622 (Form 2C Data) Effluent Parameter Units Result Parameter Date Biological Oxygen Demand mg/L < 2.0 1 6/19/2012 Chemical Oxygen Demand mg/L < 10.0 1 6/19/2012 Total Organic Carbon mg/L 8.52 1 6/19/2012 Total Suspended Solids b mg/L -- -- -- Ammonia a mg/L 0.45 1 6/19/2012 Flow b MGD 1.721 1 6/19/2012 Temperature °C 26.5 1 6/19/2012 pH b S.U. -- -- -- Oil and Grease b mg/L -- -- -- Aluminum µg/L 95.7 1 6/19/2012 Antimony µg/L < 10 1 6/19/2012 Arsenic µg/L < 10 1 6/19/2012 Barium µg/L 18.6 1 6/19/2012 Beryllium µg/L < 10 1 6/19/2012 Boron µg/L 238 1 6/19/2012 Bromide mg/L 0.576 1 6/19/2012 Cadmium µg/L < 10 1 6/19/2012 Chlorine, total residual mg/L < 0.01 1 6/19/2012 Chromium µg/L < 10 1 6/19/2012 Copper µg/L < 10 1 6/19/2012 Cyanide, total µg/L < 10 1 6/19/2012 Fluoride mg/L 2.34 1 6/19/2012 Iron µg/L 155 1 6/19/2012 Lead b µg/L -- -- -- Magnesium µg/L 10,800 1 6/19/2012 Manganese µg/L 28.4 1 6/19/2012 Mercury µg/L 0.0395 1 6/19/2012 Molybdenum µg/L 18.8 1 6/19/2012 Napthalene µg/L < 10 1 6/19/2012 Nickel µg/L < 10 1 6/19/2012 Nitrate + Nitrite mg/L 5.2 1 6/19/2012 Phenols, total µg/L 35 1 6/19/2012 Phosphorus mg/L 0.048 1 6/19/2012 Selenium b µg/L -- -- -- Silver µg/L < 10 1 6/19/2012 Sulfate mg/L 103 1 6/19/2012 Tetrachloroethylene µg/L < 5 1 6/19/2012 Thallium µg/L < 10 1 6/19/2012 Titanium µg/L < 10 1 6/19/2012 Zinc b µg/L -- -- --



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Table 6. Effluent Characterization Using Self-Monitoring Data Current Permit Limits # Percentiles Data

Parameter Units 30 day Daily Obs. 50th 95th Range

Outfall 001

pH S.U. 6.5 – 9.0 68 7.76 8.39 6.9-11.4

Flow Rate MGD - - - - - Monitor - - - - - 1,948 0.08 0.379 0.002-2.92

Outfall 002

pH S.U. 6.5 – 9.0 258 7.88 8.39 6.54-9.18

Total Filterable Residue mg/L - - - - - Monitor - - - - - 256 824 1250 392-1630

Total Suspended Solids mg/L - - - - - Monitor - - - - - 256 12 29.9 0-90

Oil and Grease mg/L 15 20 256 0 4.11 0-18.5

Zinc µg/L - - - - - Monitor - - - - - 256 19.9 82.2 0-660


Acute Toxicity, Ceriodaphnia dubia

TUa -- 1.0 22 0 3.2

0-5.6

Acute Toxicity, Pimephales promelas

TUa -- 1.0 22 0 0.585

0-0.6

Outfall 004

pH S.U. 6.5 – 9.0 65 7.76 8.25 6.65-8.67


Outfall 005

High Water Temperature °F - - - - - Monitor - - - - - 256 80.1 101 39.5-106

pH S.U. 6.5 – 9.0 256 7.81 8.15 7.01-8.7

Total Filterable Residue mg/L - - - - - Monitor - - - - - 65 554 1170 300-1700

Ammonia mg/L - - - - - Monitor - - - - - 256 0.42 1.41 0-9.34

Cyanide, free mg/L - - - - - Monitor - - - - - 256 0 0 0-0.021

Zinc µg/L - - - - - Monitor - - - - - 65 19 60.6 0-206

Lead µg/L - - - - - Monitor - - - - - 65 0 12.5 0-43

Flow Rate MGD - - - - - Monitor - - - - - 1948 41.6 48.5 11.5-68.1

Chlorine, total residual mg/L -- 0.022 256 0 0 0-0

Mercury a ng/L - - - - - Monitor - - - - - 29 3.7 11.5 0-41.4

Outfall 008

Flow Rate GPD - - - - - Monitor - - - - - 4 1,650 4,300 1010-4680

pH S.U. 6.5 – 9.0 4 8.47 8.7 7.77-8.71

Total Suspended Solids mg/L - - - - - Monitor - - - - - 4 29.3 45.8 10-48

Oil and Grease mg/L 15 20 4 0 0 0-0

Outfall 010

Oil and Grease mg/L - - - - - Monitor - - - - - 0 -- -- --

Zinc µg/L - - - - - Monitor - - - - - 0 -- -- --

Lead µg/L - - - - - Monitor - - - - - 0 -- -- --

Flow Rate MGD - - - - - Monitor - - - - - 0 -- -- --

Table continues on the next page


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Current Permit Limits # Percentiles Data


Outfall 011

Oil and Grease mg/L - - - - - Monitor - - - - - 0 -- -- --

Zinc µg/L - - - - - Monitor - - - - - 0 -- -- --

Lead µg/L - - - - - Monitor - - - - - 0 -- -- --


Outfall 014

High Water Temperature °F - - - - - Monitor - - - - - 256 79.5 103 29.9-109

pH S.U. 6.5 – 9.0 256 7.76 8.14 7.04-8.64

Total Filterable Residue mg/L - - - - - Monitor - - - - - 65 540 1,060 300-1,800

Total Suspended Solids mg/L - - - - - Monitor - - - - - 256 32 153 9-692

Oil and Grease mg/L - - - - - Monitor - - - - - 256 0 0 0-15.2


Zinc µg/L - - - - - Monitor - - - - - 65 18.7 44.1 0-104


Chlorine, total residual mg/L -- 0.022 256 0 0 0-0.0

Outfall 016

pH S.U. 6.5 – 9.0 0 -- -- --


Outfall 017

Water Temperature °F - - - - - Monitor - - - - - 250 88 100 49.2-105

Total Dissolved Residue mg/L - - - - - Monitor - - - - - 251 1,410 2,750 400-3,540

Total Suspended Solids mg/L - - - - - Monitor - - - - - 251 7.71 37.2 0-91.5

kg/day 132 390 237 8.2 37.8 0-91.5

Oil and Grease mg/L 15 20 250 0 1.26 0-16.7

kg/day 18.1 30.4 250 0 0.282 0-22.3

Zinc µg/L -- 470 493 75.4 235 0-671

kg/day 1.47 4.41 493 0.0603 0.432 0-2.18

Lead µg/L -- 5,010 251 0 15.8 0-41.3

kg/day 0.98 2.94 251 0 0.0227 0-0.0675


Chlorine, total residual mg/L - - - - - Monitor - - - - - 251 0 0 0-0

Mercury a ng/L - - - - - Monitor - - - - - 30 0.818 7.95 0-79

kg/day - - - - - Monitor - - - - - 30 5.58E-07 0.00002 0-000098

pH, maximum S.U. 9.0 maximum 1,547 8.44 8.75 7.3-9.02

pH, minimum S.U. 6.5 minimum 1,547 8.26 8.6 6.57-8.9

Outfall 019

pH S.U. 6.5 – 9.0 0 -- -- --

Zinc µg/L - - - - - Monitor - - - - - 0 -- -- --



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Outfall 022

Water Temperature °F - - - - - Monitor - - - - - 256 63.5 80.9 30.2-98

pH S.U. 6.5 – 9.0 256 8.2 8.5 7.31-8.67

Total Dissolved Residue mg/L - - - - - Monitor - - - - - 256 755 1180 360-1740

Oil and Grease mg/L 15 20 256 0 0 0-14.4


Selenium µg/L - - - - - Monitor - - - - - 65 0 0 0-2.11

Zinc µg/L - - - - - Monitor - - - - - 256 13.9 54.9 0-181

Lead µg/L - - - - - Monitor - - - - - 65 0 0 0-0

Copper µg/L - - - - - Monitor - - - - - 256 0 0 0-173


Chlorine, total residual mg/L - - - - - Monitor - - - - - 256 0 0 0-0

Mercury a ng/L - - - - - Monitor - - - - - 26 0.553 1.11 0-2.8

Acute Toxicity, Ceriodaphnia dubia

TUa - - - - - Monitor - - - - - 22 0 0.785 0-1.6

Acute Toxicity, Pimephales promelas

TUa - - - - - Monitor - - - - - 22 0 0.295 0-0.3

Outfall 023 Biochemical Oxygen Demand, 5-day

mg/L - - - - - Monitor - - - - - 63 0 11.9 0-50.7

Chemical Oxygen Demand mg/L - - - - - Monitor - - - - - 63 22.8 41.6 0-59.5

pH S.U. - - - - - Monitor - - - - - 63 8.26 8.8 6.88-8.94



Oil and Grease mg/L - - - - - Monitor - - - - - 63 0 0 0-0


Fluoride mg/L - - - - - Monitor - - - - - 63 1.61 1.98 0.0747-2.2

Zinc µg/L - - - - - Monitor - - - - - 63 36.9 774 0-1120


Outfall 024

pH S.U. 6.5 – 9.0 57 8.13 8.55 7.46-8.69



pH S.U. - - - - - Monitor - - - - - 256 7.8 8.24 6.1-8.55

Total Dissolved Residue mg/L - - - - - Monitor - - - - - 256 1,060 1,670 451-2,380

Total Suspended Solids kg/day - - - - - Monitor - - - - - 256 63 159 0-378

Oil and Grease kg/day - - - - - Monitor - - - - - 256 0 35.1 0-221

Cyanide, free kg/day - - - - - Monitor - - - - - 65 0 0 0-0

Zinc kg/day - - - - - Monitor - - - - - 256 0.0585 0.251 0-0.622



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Internal Station 601 (continued)

Lead kg/day - - - - - Monitor - - - - - 256 0 0 0-0.103


Total Toxic Organics µg/L -- 710 0 -- -- --


pH S.U. - - - - - Monitor - - - - - 256 7.92 8.48 7.03-9.21


Total Suspended Solids kg/day - - - - - Monitor - - - - - 256 46.4 126 0-862

Oil and Grease kg/day - - - - - Monitor - - - - - 256 0 46.7 0-159

Cyanide, free kg/day - - - - - Monitor - - - - - 65 0 0 0-0

Zinc kg/day - - - - - Monitor - - - - - 256 0 0.216 0-2.85

Lead kg/day - - - - - Monitor - - - - - 256 0 0 0-0.172



Total Dissolved Residue mg/L - - - - - Monitor - - - - - 258 853 1,240 402-1490

Total Suspended Solids mg/L - - - - - Monitor - - - - - 258 8.61 18.3 0-66.5

kg/day 631 1,284 258 110 279 0-953

Oil and Grease mg/L - - - - - Monitor - - - - - 256 0 6.91 0-20.1

kg/day 485 672 256 0 96.9 0-258


Zinc µg/L - - - - - Monitor - - - - - 258 11.9 31.4 0-150

kg/day 6.09 14.7 258 0.149 0.443 0-2.98

Lead µg/L - - - - - Monitor - - - - - 258 0 0 0-10.8

kg/day 3.12 8.24 258 0 0 0-0.232



Total Suspended Solids mg/L - - - - - Monitor - - - - - 130 14.8 32.6 0-62

kg/day 218 657 130 12.2 34.7 0-70.8

Ammonia (summer) mg/L - - - - - Monitor - - - - - 132 17.2 32.5 0-66.9

kg/day 62.4 85.6 132 13.5 33.6 0-77.1

Ammonia (winter) mg/L - - - - - Monitor - - - - - 124 26.6 50.9 5.05-73.3

kg/day 81.6 211 124 22.1 52.6 1.74-88.8

Cyanide, total mg/L - - - - - Monitor - - - - - 136 0 0.16 0-0.508

kg/day 7.36 14.7 136 0 0.174 0-0.594

Zinc µg/L - - - - - Monitor - - - - - 256 95 392 0-1200

kg/day 1.00 2.83 242 0.0975 0.46 0.00903-2.68

Lead µg/L - - - - - Monitor - - - - - 256 24.9 58.8 0-898

kg/day 0.74 2.21 240 256 0.0202 0.0737



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Internal Station 604 (continued)

Phenolics, total µg/L - - - - - Monitor - - - - - 65 0 54 0-198

kg/day 0.245 0.491 65 0 0.0412 0-0.136


pH, maximum S.U. 9.0 Maximum 1945 8.2 8.42 7-9.16

pH, minimum S.U. 6.5 Minimum 1945 8.03 8.26 6.5-8.53

Internal Station 613 Biochemical Oxygen Demand, 5-day

mg/L - - - - - Monitor - - - - - 27 0 4.97 0-9.1

Chemical Oxygen Demand mg/L - - - - - Monitor - - - - - 27 16.1 27.3 6.31-41.1

pH S.U. 6.5 – 9.0 27 8.34 8.9 7.15-9.3

Total Suspended Solids mg/L 30 45 27 0 7.7 0-10


Sulfate mg/L - - - - - Monitor - - - - - 28 34.7 121 0-246





kg/day 251 732 256 24.9 59.6 0-182


kg/day 75.8 221 256 0 0 0-119

Selenium µg/L - - - - - Monitor - - - - - 65 0 0 0-12.4

Lead µg/L - - - - - Monitor - - - - - 256 0 0 0-22

kg/day 1.46 4.38 256 0 0 0-0.127

Zinc µg/L - - - - - Monitor - - - - - 256 17.8 56.4 0-177

kg/day 2.25 6.65 256 0.0946 0.37 0-1.45


pH, maximum S.U. - - - - - Monitor - - - - - 1948 7.9 8.4 7.08-9.1

pH, minimum S.U. - - - - - Monitor - - - - - 1948 7.78 8.18 6.58-8.5


mg/L - - - - - Monitor - - - - - 24 0 6.18 0-7.5

Chemical Oxygen Demand mg/L - - - - - Monitor - - - - - 24 19 36.5 0-38.9

pH S.U. - - - - - Monitor - - - - - 24 8.41 8.91 7.2-9.13

Total Suspended Solids mg/L 30 45 24 0 10.6 0-17


Sulfate mg/L - - - - - Monitor - - - - - 24 51 78.6 11.5-217


Table continues on next page


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mg/L - - - - - Monitor - - - - - 39 0 11.1 0-39.3

Chemical Oxygen Demand mg/L - - - - - Monitor - - - - - 39 34.5 61 4.82-1830

pH S.U. - - - - - Monitor - - - - - 39 8.4 8.95 7.4-9.11



Sulfate mg/L - - - - - Monitor - - - - - 39 87.1 148 43.9-284



mg/L - - - - - Monitor - - - - - 63 2.2 15.7 0-66.7

Chemical Oxygen Demand mg/L - - - - - Monitor - - - - - 63 32.1 50.8 0-76.6

pH S.U. - - - - - Monitor - - - - - 63 8.44 9.28 6.88-11



Sulfate mg/L - - - - - Monitor - - - - - 63 85.4 139 12.2-155



Total Dissolved Residue mg/L - - - - - Monitor - - - - - 0 -- -- --

Total Suspended Solids kg/day 632 1,284 0 -- -- --

Oil and Grease kg/day 520 672 0 -- -- --

Cyanide, free mg/L - - - - - Monitor - - - - - 0 -- -- --

Zinc kg/day 6.56 16.2 0 -- -- --

Lead kg/day 9.01 3.40 0 -- -- --


Intake 800

Water Temperature °C - - - - - Monitor - - - - - 68 21.1 26.5 12.7-27


Intake 801

Water Temperature °C - - - - - Monitor - - - - - 68 21.3 26.8 13-29.5


Intake 806

Water Temperature °C - - - - - Monitor - - - - - 67 21.1 26.7 12.3-28.8


Intake 808

Water Temperature °C - - - - - Monitor - - - - - 68 22.4 28.2 12.9-29.3

Ammonia mg/L - - - - - Monitor - - - - - 65 0.27 0.71 0-1.94 All values are based on annual records unless otherwise indicated. a Mercury data is based on January 2011 – July 2017; all other parameters are based on April 2012 – July 2017. * = For minimum pH, 5th percentile shown in place of 50th percentile; ** = For dissolved oxygen, 5th percentile shown in place of 95th percentile. MGD = million gallons per day GPD = gallons per day


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Table 7. Projected Effluent Quality Table 7- a. Outfall 001

Number of Number > PEQ PEQ Parameter Units Samples MDL Average Maximum Outfall 001 Form 2.C Application Data

Aluminum µg/l 1 1 281.5 385.6 Ammonia* mg/l 7 5 0.5256 0.72 Barium µg/l 1 1 484.3 663.4 Boron µg/l 1 1 859.9 1178. Chromium µg/l 1 1 77.85 106.6 Fluoride µg/l 1 1 8,554 11,718 Iron µg/l 1 1 1358. 1860. Magnesium mg/l 1 1 26.98 36.95 Manganese µg/l 1 1 669.8 917.6 Molybdenum µg/l 1 1 101.4 138.9 Nitrate+Nitrite mg/l 1 1 3.195 4.377 Sulfate mg/l 1 1 2,277 3,119 Zinc* µg/l 14 2 175.2 240

* In addition to the Form 2C data, supplemental data was provided for this parameter (see Attachment 7). MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 7- b. Outfall 002

Number of Number > PEQ PEQ Parameter Units Samples MDL Average Maximum Outfall 002 Self-Monitoring (DMR) Data

Total Filterable Residue mg/l 256 256 1,014.3 1,253.8 Zinc µg/l 256 198 67.66 101.11

Form 2.C Application Data

Aluminum µg/l 1 1 235.4 322.4 Ammonia* mg/l 7 1 0.436 0.6 Barium* µg/l 7 7 116.8 160 Boron µg/l 1 1 520.5 713.0 Bromide mg/l 1 1 2.195 3.007 Fluoride µg/l 1 1 5,341 7,316 Iron µg/l 1 1 479.8 6,572 Magnesium mg/l 1 1 44.45 60.88 Manganese µg/l 1 1 297.4 407.3 Molybdenum µg/l 1 1 63.82 87.42 Nickel µg/l 1 1 58.39 79.98 Nitrate+Nitrite mg/l 1 1 0.10 0.136 Phosphorus mg/l 1 1 0.887 1.215 Sulfate mg/l 1 1 179.2 245.5 Titanium µg/l 1 1 56.58 77.50

* In addition to the Form 2C data, supplemental data was provided for this parameter (see Attachment 7). DMR = Discharge Monitoring Report MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 7- c. Outfall 005


Ammonia (Summer) mg/l 88 76 1.05 1.61 Ammonia (Winter) mg/l 59 56 0.83 1.16 Chlorine, total res. µg/l 256 0 -- -- Cyanide, free µg/l 256 3 10.73 14.7 Lead µg/l 65 5 20.97 23.05 Mercury* ng/l 29 27 13.645 23.007 Total Filterable Residue mg/l 65 65 813.65 1,069.5 Zinc µg/l 65 60 48.27 74.41


Aluminum µg/l 1 1 502.4 688.2 Barium µg/l 1 1 167.9 230 Boron µg/l 1 1 792.1 1085. Bromide mg/l 1 1 2.842 3.894 Fluoride µg/l 1 1 3245. 4445. Iron µg/l 1 1 2114. 2895. Magnesium mg/l 1 1 73.77 101.1 Manganese µg/l 1 1 302.3 414.2 Nitrate+Nitrite mg/l 1 1 32.95 45.14 Phenols µg/l 1 1 248.9 341.0 Phosphorus mg/l 1 1 1.168 1.60 Sulfate mg/l 1 1 372.0 509.6

* Based on January 2011 – July 2017 data DMR = Discharge Monitoring Report MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 7- d. Outfall 014


Ammonia (Summer) mg/l 23 18 0.78 1.29 Ammonia (Winter) mg/l 15 10 0.49 0.78 Chlorine, total res. µg/l 256 0 -- -- Total Filterable Residue mg/l 65 65 792.12 1,044.8 Zinc µg/l 65 58 35.84 53.17


Aluminum µg/l 1 1 1575. 2158. Barium µg/l 1 1 166.6 228.2 Boron µg/l 1 1 475.2 651.0 Bromide mg/l 1 1 1.648 2.257 Fluoride µg/l 1 1 1,779 2,437 Iron µg/l 1 1 4,463 6,113 Magnesium mg/l 1 1 54.31 74.40 Manganese µg/l 1 1 314.6 430.9 Nitrate+Nitrite mg/l 1 1 14.53 19.90 Phosphorus mg/l 1 1 0.616 0.843 Sulfate mg/l 1 1 290.1 397.4

DMR = Discharge Monitoring Report MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 7- e. Outfall 017


Chlorine, total res. µg/l 251 0 -- -- Lead µg/l 251 52 12.65 18.46 Mercury * ng/l 29 20 6.9466 10.915 Total Filterable Residue mg/l 251 251 1,809 2,478 Zinc µg/l 493 488 153.87 266.98


Aluminum µg/l 1 1 1697. 2325. Ammonia mg/l 1 1 1.403 1.922 Antimony µg/l 1 1 419.1 574.1 Barium µg/l 1 1 760.4 1042. Boron µg/l 1 1 2281. 3125. Bromide mg/l 1 1 32.27 44.21 Cyanide, total µg/l 1 1 58.84 80.60 Fluoride µg/l 1 1 291022. 398660. Iron µg/l 1 1 2304. 3156. Magnesium mg/l 1 1 54.76 75.02 Manganese µg/l 1 1 235.8 323.0 Molybdenum µg/l 1 1 1557. 2133. Phenols µg/l 1 1 339.5 465.0 Phosphorus mg/l 1 1 3.521 4.824 Sulfate mg/l 1 1 2331. 3193.

* Based on January 2011 – July 2017 data DMR = Discharge Monitoring Report MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 7- f. Outfall 022


Chlorine, total res. µg/l 256 0 -- -- Copper µg/l 255 2 10.88 14.91 Cyanide, free µg/l 232 4 5.6 7.6 Lead µg/l 65 0 -- -- Mercury a ng/l 26 15 2.657 3.64 Selenium µg/l 20 2 2.156 2.954 Total Filterable Residue mg/l 256 256 970 1,172 Zinc µg/l 256 176 40.65 60.92


Aluminum µg/l 1 1 408.7 560.0 Ammonia b mg/l 7 1 0.5986 0.82 Barium µg/l 1 1 90.52 124.0 Boron µg/l 1 1 1068. 1463. Bromide mg/l 1 1 2.521 3.453 Fluoride µg/l 1 1 10184. 13950. Iron µg/l 1 1 656.3 899.0 Magnesium mg/l 1 1 46.62 63.86 Manganese µg/l 1 1 107.3 146.9 Molybdenum µg/l 1 1 82.83 113.5 Nitrate+Nitrite mg/l 1 1 22.72 31.12 Phenols µg/l 1 1 153.9 210.8 Sulfate mg/l 1 1 493.3 675.8

a Based on January 2011 – July 2017 data. b In addition to the Form 2C data, supplemental data was provided for this parameter (see Attachment 7). DMR = Discharge Monitoring Report MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 7- g. Outfall 023


Ammonia (Summer) mg/l 20 17 1.324 2.338 Ammonia (Winter) mg/l 15 11 2.957 4.05 Fluoride mg/l 63 63 1.606 2.2 Total Filterable Residue mg/l 63 63 1,633.4 2,385.5 Zinc µg/l 63 59 400.26 573.4


Aluminum µg/l 1 1 285.6 391.2 Barium µg/l 1 1 72.42 99.20 Boron µg/l 1 1 547.6 750.2 Bromide mg/l 1 1 11.22 15.38 Iron µg/l 1 1 760.4 1042. Magnesium mg/l 1 1 81.92 112.2 Manganese µg/l 1 1 59.29 81.22 Molybdenum µg/l 1 1 278.3 381.3 Nitrate+Nitrite mg/l 1 1 1.602 2.195 Sulfate mg/l 1 1 1222. 1674.



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Table 7- h. Internal Station 601

Number of Number > PEQ PEQ Parameter Units Samples MDL Average Maximum Internal Station 601 Self-Monitoring (DMR) Data

Cyanide, free µg/l 65 0 -- -- Lead µg/l 256 1 5.928 8.12 Total Filterable Residue mg/l 256 256 1,386 1,729.7 Zinc µg/l 256 137 29.268 43.551

Form 2.C Application Data Ammonia mg/l 1 1 2.037 2.790 Barium µg/l 1 1 166.6 228.2 Boron µg/l 1 1 291.0 398.7 Bromide mg/l 1 1 2.132 2.92 Fluoride µg/l 1 1 2869. 3931. Iron µg/l 1 1 16203. 22196. Magnesium mg/l 1 1 41.55 56.92 Manganese µg/l 1 1 204.6 280.2 Molybdenum µg/l 1 1 64.72 88.66 Nickel µg/l 1 1 96.40 132.1 Nitrate+Nitrite mg/l 1 1 31.91 43.71 Phosphorus mg/l 1 1 0.362 0.496 Sulfate mg/l 1 1 358.5 491.0 Titanium µg/l 1 1 114.5 156.9



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Table 7- i. Internal Station 602


Cyanide, free µg/l 65 0 -- -- Lead µg/l 256 1 6.03 8.26 Total Filterable Residue mg/l 256 256 826.86 981.18 Zinc µg/l 256 112 22.957 34.375

Form 2.C Application Data Ammonia mg/l 1 1 0.996 1.364 Barium µg/l 1 1 126.7 173.6 Boron µg/l 1 1 611.0 837.0 Fluoride µg/l 1 1 2625. 3596. Iron µg/l 1 1 2340. 3205. Magnesium mg/l 1 1 40.78 55.86 Manganese µg/l 1 1 326.8 447.6 Molybdenum µg/l 1 1 59.29 81.22 Nickel µg/l 1 1 64.27 88.04 Nitrate+Nitrite mg/l 1 1 9.278 12.71 Phosphorus mg/l 1 1 1.150 1.575 Sulfate mg/l 1 1 161.6 221.3 Titanium µg/l 1 1 67.89 93.0

Outfall 603 (Internal) Self-Monitoring (DMR) Data

Cyanide, free µg/l 63 3 14.6 20.0 Lead µg/l 258 6 5.509 7.546 Total Filterable Residue mg/l 258 258 759.6 1040 Zinc µg/l 258 174 23.631 34.099



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Table 7- j. Internal Stations 604 and 613


Ammonia (Summer) mg/l 88 87 25.742 34.806 Ammonia (Winter) mg/l 60 60 45.512 63.047 Cyanide, total µg/l 136 26 296.7 406.4 Lead µg/l 256 248 46.797 66.649 Phenolic 4AAP µg/l 65 30 144.5 198 Zinc µg/l 256 255 279 418.1

Form 2.C Application Data Aluminum µg/l 1 1 1471. 2015. Antimony µg/l 1 1 109.1 149.4 Arsenic µg/l 1 1 58.39 79.98 Barium µg/l 1 1 674.4 923.8 Boron µg/l 1 1 2159. 2957. Bromide mg/l 1 1 76.04 104.2 Fluoride µg/l 1 1 85994. 117800. Iron µg/l 1 1 10002. 13702. Magnesium mg/l 1 1 247.6 339.1 Manganese µg/l 1 1 4137. 5667. Molybdenum µg/l 1 1 87.35 119.7 Nitrate+Nitrite mg/l 1 1 9.278 12.71 Phosphorus mg/l 1 1 0.806 1.104 Sulfate mg/l 1 1 801.1 1097. Thallium µg/l 1 1 100.0 137.0

Internal Station 613 Self-Monitoring (DMR) Data

Sulfate mg/l 27 27 26.39 155.92 DMR = Discharge Monitoring Report MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 7- k. Internal Stations 622, 633, 643, and 653


Total Filterable Residue mg/l 256 256 1,065 1,311.9 Selenium µg/l 65 1 9.052 12.4 Lead µg/l 256 3 11.24 15.4 Zinc µg/l 256 193 42.99 64.07


Aluminum µg/l 1 1 433.1 593.3 Ammonia mg/l 1 1 2.037 2.79 Barium µg/l 1 1 84.18 115.3 Boron µg/l 1 1 1077. 1476. Bromide µg/l 1 1 2.607 3.571 Fluoride µg/l 1 1 10591. 14508. Iron µg/l 1 1 701.5 961.0 Magnesium mg/l 1 1 48.88 66.96 Manganese µg/l 1 1 128.5 176.1 Mercury ng/l 1 1 178.8 244.9 Molybdenum µg/l 1 1 85.09 116.6 Nitrate+Nitrite mg/l 1 1 23.54 32.24 Phenols µg/l 1 1 158.4 217.0 Phosphorus mg/l 1 1 0.217 0.298 Sulfate mg/l 1 1 466.2 638.6


Sulfate mg/l 24 24 108.68 177.23


Sulfate mg/l 39 39 135.61 184.08


Sulfate mg/l 63 63 113.2 155.0 DMR = Discharge Monitoring Report MDL = analytical laboratory method detection limit PEQ = projected effluent quality


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Table 8. Summary of Acute and Chronic Toxicity Results

Acute Toxicity (TUa)

Outfall 002 Outfall 022

Date C. Dubia P. promelas C. Dubia P. promelas

4/10/2012 AA AA AA AA

7/10/2012 1.2 AA 0.4 AA

10/9/2012 AA AA AA AA

1/23/2013 AA AA AA 0.3

4/9/2013 AA AA 0.5 AA

7/9/2013 0.2 0.6 AA AA

10/9/2013 AA AA AA 0.2

1/23/2014 0.2 AA 1.6 AA

4/16/2014 AA AA AA AA

7/2/2014 0.8 AA AA AA

10/16/2014 AA AA AA AA

1/13/2015 AA AA AA AA

4/9/2015 AA AA AA AA

7/20/2015 AA 0.2 AA AA

10/9/2015 AA 0.3 AA AA

1/19/2016 5.6 AA AA AA

4/12/2016 3.3 AA AA AA

7/15/2016 AA 0.6 AA AA

10/27/2016 AA AA AA AA

1/18/2017 AA AA 0.8 AA

4/5/2017 AA AA AA AA

7/19/2017 AA AA AA 0.3 AA = non-detection; analytical method detection limit of 0.2 TUa, 1.0 TUc TUa = acute toxicity unit TUc = chronic toxicity unit C. dubia = Ceriodaphnia dubia P. promelas = Pimephales promelas


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Table 9. Use Attainment Table

Location Year(s) River Mile

Aquatic Life Use

Designation

Attainment Status

Causes of Impairment

Sources of Impairment

Cuyahoga R. upst. NEORSD Southerly WWTP

2014 10.95 WWH FULL

Cuyahoga R. dst. NEORSD Southerly WWTP

2014 10.30 WWH FULL

Cuyahoga R. dst Southerly at Conrail RR

2008-09 9.7 WWH FULL A

Cuyahoga R. 1.7 mi. dst Southerly

2014 8.9 WWH PARTIAL Not Listed Not Listed

Cuyahoga R. upst. Bradley Rd. Smelters

2008-09 8.3 WWH PARTIAL Direct Habitat Alt.; Metals;

Organic Enrich./ DO; Flow Alt.

Not Listed

Cuyahoga R. at lower Harvard Ave

2014 7.1 WWH NON Not Listed

Not Listed

Cuyahoga R. at Pershing Ave.

2008 5.0 LRW NON B Ammonia; Direct Habitat Alts.; Impairm.

Unknown; Organic Enrich. (Sewage); Other

CSOs; Dredging (for Nav. Channel); Marina Dredging

Ops; Muni WWTP Discharges; Sed. Re-suspension (Contam.

Sediments); Spills; Streamb. Mods./ Destabilization;

Urban Runoff/ Storm Sewers Cuyahoga R. near Walworth Run

2014 2.74 LRW FULL

Cuyahoga R. at 1st Bridge near Mouth

2014 0.29 LRW FULL

A= Only macroinvertebrates assessed. B= Only fish assessed. WWH = Warmwater Habitat LRW = Limited Resource Water Upst.= Upstream Dst = Downstream WWTP = Wastewater Treatment Plant


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Table 10. Water Quality Criteria in the Study Area Table 10- a. Parameters not Hardness-Based (Water Quality Criteria)

Outside Mixing Zone Criteria Inside

Average Maximum Mixing

Wildlife Human Agri- Aquatic Aquatic Zone Parameter Units Health A Supply D Life A E Life A Maximum A

Aluminum µg/l -- 4,500 C -- -- -- -- Antimony µg/l -- 780 -- 190 C 900 C 1,800 C Arsenic µg/l -- 580 100 150 340 680 Barium µg/l -- 160,000 -- 220 C 2,000 C 4,000 C Boron µg/l -- 200,000 -- 3,900 C 33,000 65,000 Bromide mg/l -- -- -- -- -- -- Chlorine, Total Residual µg/l -- -- -- 11 19 38 Cyanide, Free µg/l -- 48,000 -- 5.2 22 44 Fluoride µg/l -- -- 2,000 -- -- -- Iron µg/l -- -- 5,000 -- -- -- Magnesium mg/l -- -- -- -- -- -- Manganese µg/l -- 61,000 -- -- -- -- Mercury B ng/l 1.3 3.1 10,000 910 1,700 3,400 Molybdenum µg/l -- 10,000 -- 20,000 C 190,000 C 370,000 C Naphthalene µg/l -- 1,200 -- 21 C 170 C 340 C Nitrate + Nitrite mg/l -- -- 100 -- -- -- Phenol µg/l -- 2,400 C -- 400 C 4,700 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium µg/l -- 3,100 50 5 -- -- Strontium µg/l -- 1,400,000 -- 21,000 C 40,000 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene µg/l -- 1,800 -- 53 C 430 C 850 C Thallium µg/l -- -- -- 17 C 79 C 160 C Titanium µg/l -- -- -- -- -- -- Total Filterable Residue mg/l -- -- -- 1,500 -- --

A = Human Health and Aquatic Life Criteria are Tier I unless otherwise indicated. B = Bioaccumulative Chemical of Concern (BCC) C = Tier II criteria D = Agricultural Water Supply Criteria applies only to outfalls 001, 002, 022, 023 and 024 E = Aquatic Life Average Criteria applies to outfalls 001, 002, 022, 024; and during fish passage conditions ONLY (Feb-May at a flow at and exceeding 703 cfs at the USGS gage at Independence, OH) to outfalls 005, 014 and 017.


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Table 10- b. Hardness-Based Parameters (Water Quality Criteria)



Wildlife Human Agri- Aquatic Aquatic Zone Parameter Units Health A Supply E Life A F Life A Maximum A

Outfalls 001 & 002 Beryllium µg/l -- 130 C 100 37 B 310 B 620 B Cadmium µg/l -- 730 50 4.4 11 21 Chromium µg/l -- 14,000 100 150 D 1,200 D 2,500 D Copper µg/l -- 64,000 500 21 D 33 D 70 D Lead µg/l -- -- 100 54 D 1,000 D 2,200 D Nickel µg/l -- 43,000 200 100 D 940 D 1,900 D Silver µg/l -- 11,000 -- 1.3 5.8 12 Zinc µg/l -- 35,000 25,000 240 D 230 D 490 D Outfalls 005, 014, 017, 022, 023 & 024 Beryllium µg/l -- 130 C 100 39 B 340 B 670 B Cadmium µg/l -- 730 50 4.6 11 22 Chromium µg/l -- 14,000 100 200 D 1,600 D 3,100 D Copper µg/l -- 64,000 500 24 D 39 D 77 D Lead µg/l -- -- 100 150 D 2,800 D 5,700 D Nickel µg/l -- 43,000 200 110 D 1,000 D 2,000 D Silver µg/l -- 11,000 -- 1.3 6.3 13 Zinc µg/l 35,000 25,000 260 D 250 D 500 D Outfalls 005, 014 & 017 – During Fish Passage Conditions Beryllium µg/l -- 130 C -- 32 B 340 B 670 B Cadmium µg/l -- 730 -- 4.2 11 22 Chromium µg/l -- 14,000 -- 180 D 1,600 D 3,100 D Copper µg/l -- 64,000 -- 22 D 39 D 77 D Lead µg/l -- -- -- 130 D 2,800 D 5,700 D Nickel µg/l -- 43,000 -- 100 D 1,000 D 2,000 D Silver µg/l -- 11,000 -- 1.3 5 13 Zinc µg/l -- 35,000 -- 230 D 250 D 500 D

A = Human Health and Aquatic Life Criteria are Tier I unless otherwise indicated. B = Tier II criteria C = Carcinogen D = Effective criteria based on the application of a dissolved metals translator. E = Agricultural Water Supply Criteria applies only to outfalls 001, 002, 022, 023 and 024 F = Aquatic Life Average Criteria applies to outfalls 001, 002, 022, 024; and during fish passage conditions only (Feb-May at a flow at or exceeding 703 cfs at the USGS gage at Independence, OH) to outfalls 005, 014 and 017.


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Table 10- c. Ammonia Water Quality Criteria

Segment River Mile Outfall(s) Season Average Aquatic

Life A

Maximum Aquatic

Life A

Cuyahoga River Downstream NEORSD Southerly WWTP

10.57 – 6.6 NEORSD 001 AM 001, 002

Summer Winter

1.3 2.3

10.7 6.3

Cuyahoga River

6.6 – 5.6 AM 022, 024 Summer Winter

1.2 2.3

10.7 6.3

Cuyahoga River at Ship Channel Boundary to turning basin B

5.6 – 3.3 B AM 005, 014,

017

Summer Winter

Feb-May C

-- --

2.2

10.0 6.3

13.0

Burke Branch B 3.3 – 0 (mouth)

B AM 023 Summer Winter

-- --

9.1 9.9

AM = ArcelorMittal NEORSD = Northeast Ohio Regional Sewer District WWTP = Wastewater Treatment Plant

A = All units are mg/l. B = Aquatic Life use designation is Limited Resource Water C = During Fish Passage Conditions (FPC)


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Table 11. Instream Conditions and Discharger Flow

Parameter Units Value Basis

Upstream Flows Cuyahoga River above NEORSD Southerly WWTP (Cuyahoga River at Independence and Mill Creek) 7Q10 cfs annual 104.7 USGS gage #04208000,1965-2015 1Q10 cfs annual 84.2 USGS gage #04208000,1965-2015 30Q10 cfs summer 149.2 USGS gage #04208000,1965-2015 30Q10 cfs winter 288.4 USGS gage #04208000,1965-2015 Harmonic Mean Flow cfs annual 494.2 USGS gage #04208000,1965-2015 Mixing Assumption % average 25 Stream-to-discharge ratio % max 100 Stream-to-discharge ratio Tributary Flows to the Cuyahoga River Big Creek (RM 7.20) cfs annual 4.6 USGS gage #04208502 Morgana Run (RM 5.05) cfs annual 0.25 USGS gage #04208502 ArcelorMittal Outfalls Outfall 001 flow rate cfs(MGD) avg. 0.573 (0.37) NPDES permit application Outfall 002 flow rate cfs(MGD) avg. 8.75 (5.655) NPDES permit application Outfall 005 flow rate cfs(MGD) avg. 69.93 (45.2) NPDES permit application Outfall 014 flow rate cfs(MGD) avg. 71.3 (46.08) NPDES permit application Outfall 017 flow rate cfs(MGD) avg. 1.029(0.665) NPDES permit application Outfall 022 flow rate cfs(MGD) avg. 4.518 (2.92) NPDES permit application Outfall 023 flow rate cfs(MGD) avg. 0.145(0.094) NPDES permit application Outfall 024 flow rate cfs(MGD) avg. 1.238 (0.80) NPDES permit application NEORSD Southerly WWTP Outfall 001 flow rate cfs(MGD) design 270.8 (175) NPDES permit application Background Water Quality for the Cuyahoga River Aluminum µg/l annual 677 STORET; 5 values, 2 <MDL, 2000-08 Antimony µg/l annual 0 No representative data available. Arsenic µg/l annual 4.12 STORET; 6 values, 0 <MDL, 2000-08 Barium µg/l annual 75.7 STORET; 6 values, 0 <MDL, 2000-08 Beryllium µg/l annual 0 No representative data available. Boron µg/l annual 0 No representative data available. Cadmium µg/l annual 0.2 STORET; 6 values, 5 <MDL, 2000-08 Chlorine, Total Residual µg/l annual 0 No representative data available. Chromium µg/l annual 17.8 STORET; 6 values, 5 <MDL, 2000-08

MDL = method detection limit NPDES = National Pollutant Discharge Elimination System DMR = Discharge Monitoring Report STORET = United States Environmental Protection Agency Storage and Retrieval Data Warehouse USGS = United States Geological Survey cfs= cubic feet per second MGD= Million Gallons per Day


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Table 11. Instream Conditions and Discharge Flow (continued)

Parameter Units Value Basis Background Water Quality for the Cuyahoga River (continued) Copper µg/l annual 4.7 STORET; 5 values, 4 <MDL, 2000-08 Cyanide, Free µg/l annual 0 No representative data available. Fluoride µg/l annual 0 No representative data available. Hexavalent Chromium (dissolved) µg/l annual 0 No representative data available. Iron µg/l annual 1467 STORET; 5 values, 0 <MDL, 2000-08 Lead µg/l annual 2.4 STORET; 5 values, 2 <MDL, 2000-08 Manganese µg/l annual 79.6 STORET; 5 values, 0 <MDL, 2000-08 Mercury ng/l annual 0 STORET; 5 values, 5 <MDL, 2000-08 Molybdenum µg/l annual 0 No representative data available. Napthalene µg/l annual 0 No representative data available. Nickel µg/l annual 24.7 STORET; 6 values, 4 <MDL, 2000-08 Nitrate+Nitrite mg/l annual 2.73 STORET; 6 values, 0 <MDL, 2000-08 Phenol µg/l annual 0 No representative data available. Selenium µg/l annual 0 STORET; 5 values, 5 <MDL, 2000-08 Silver µg/l annual 0 No representative data available. Strontium µg/l annual 226.5 STORET; 6 values, 0 <MDL, 2000-08 Tetrachloroethylene µg/l annual 0 No representative data available. Thallium µg/l annual 0 No representative data available. Total Filterable Residue mg/l annual 476.5 STORET; 6 values, 0 <MDL, 2000-08 Zinc µg/l annual 22.2 STORET; 5 values, 1 <MDL, 2000-08 Instream Hardness NEORSD Southerly, ArcelorMittal Outfalls 001, 002 mg/l annual 212 Southerly 901; 120 values, 2011-15 ArcelorMittal Outfalls 005, 014, 017, 022, 023, 024 mg/l annual 222 STORET; 57 values, 2001-10 ArcelorMittal Outfalls 005, 014, 017 – Fish Passage Conditions mg/l

FPC/ Feb-May 195 STORET; 14 values, 2001-10

Dissolved Metals Translators NEORSD Southerly & ArcelorMittal Outfalls 001 & 002 Chromium annual 1.13 OEPA; 5 values, 0 < MDL, 1996-97 Copper annual 1.22 OEPA; 5 values, 0 < MDL, 1996-97 Lead annual 4.05 OEPA; 5 values, 0 < MDL, 1996-97 Nickel annual 1.06 OEPA; 5 values, 0 < MDL, 1996-97 Zinc annual 1.06 OEPA; 5 values, 0 < MDL, 1996-97

FPC = Fish Passage Conditions MDL = method detection limit STORET = United States Environmental Protection Agency Storage and Retrieval Data Warehouse OEPA = Ohio Environmental Protection Agency


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Table 11. Instream Conditions and Discharge Flow (continued)

Parameter Units Value Basis

Dissolved Metals Translators ArcelorMittal Outfalls 005, 014, 017, 022, 023, 024 Chromium annual 1.43 OEPA; 5 values, 0 < MDL, 1996-97 Copper annual 1.36 OEPA; 5 values, 0 < MDL, 1996-97 Lead annual 10.58 OEPA; 5 values, 0 < MDL, 1996-97 Nickel annual 1.09 OEPA; 5 values, 0 < MDL, 1996-97 Zinc annual 1.1 OEPA; 5 values, 0 < MDL, 1996-97

MDL = method detection limit OEPA = Ohio Environmental Protection Agency


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Table 12. Summary of Effluent Limits to Maintain Applicable Water Quality Criteria Table 12- a. Outfall 001 (Warmwater Habitat)



Human Agri Aquatic Aquatic Zone Parameter Units WildLife Health Supply Life Life Maximum

Aluminum B µg/l -- 5,915 -- -- -- -- Antimony B µg/l -- 1,800E -- 1,800E 1,800E 1,800 Arsenic B µg/l -- 789 A 240 195 418 680 Barium µg/l -- 218,028 A -- 4,000E 4,000E 4,000 Beryllium B µg/l -- 177 243 48 409 670 Boron B µg/l -- 741,260 A -- 82,707 A 110,568 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium B µg/l -- 995 A 121 A 5.7 14 21 Chlorine, Total Res. B µg/l -- -- -- 14 23 38 Chromium µg/l -- 19,073 A 222 191 D 1,608 D 2,500 D Copper B µg/l -- 87,220 A 1,209 A 26 D 43 D 70 D Fluoride µg/l -- -- 58,237 -- -- -- Iron µg/l -- -- 11,741 -- -- -- Lead B µg/l -- -- 239 79 D 1,344 D 2,200 D Magnesium mg/l -- -- -- -- -- -- Manganese B µg/l -- 83,133 -- -- -- -- Mercury B C ng/l 1.3 3.1 10,000 A 910 1,700 3,400 Molybdenum B µg/l -- 37,063 -- 424,138 A 636,601 A 370,000 Naphthalene B µg/l -- 4,448 A -- 445 A 570 A 340 Nickel B µg/l -- 58,593 A 458 139 D 1,206 D 1,900 D Nitrate + Nitrite B mg/l -- -- 242 -- -- -- Phenol B µg/l -- 8,895 -- 8,483 15,747 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium B µg/l -- 4,225 122 6.5 -- -- Silver B µg/l -- 14,991 A -- 1.7 7.6 12 Strontium B µg/l -- 1,908,000 A -- 27,406 49,230 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene B µg/l -- 6,671 A -- 1,124 A 1,441 A 850 Thallium B µg/l -- -- -- 22 97 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Residue B mg/l -- -- -- 1,774 -- -- Zinc µg/l -- 47,691 A 60,790 A 490 D E 490 D E 490 D

A Allocation must not exceed the Inside Mixing Zone Maximum B Parameter would not require a WLA based on reasonable potential procedures, but allocation requested by Permits Group. C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe, unless the requirements for an exclusion are met as listed in 3745-2-08 (L). D WLA based on applicable dissolved metals translator. E WLA fixed at IMZM


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Table 12- b. Outfall 002 and Internal Stations 601 & 602 (Warmwater Habitat)




Aluminum µg/l -- 5,915 -- -- -- -- Antimony µg/l -- 1,063 -- 248 1,109 1,800 Arsenic µg/l -- 789 A 240 195 418 680 Barium µg/l -- 218,028 A -- 277 2,447 4,000 Beryllium µg/l -- 177 243 48 409 670 Boron µg/l -- 741,260 A -- 82,707 A 110,568 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium µg/l -- 995 A 121 A 5.7 14 21 Chlorine, Total Res. µg/l -- -- -- 14 23 38 Chromium µg/l -- 19,073 A 222 191 D 1,608 D 2,500 D Copper µg/l -- 87,220 A 1,209 A 26 D 43 D 70 D Fluoride µg/l -- -- 58,237 -- -- -- Iron µg/l -- -- 11,741 -- -- -- Lead µg/l -- -- 239 79 D 1,344 D 2,200 D Magnesium mg/l -- -- -- -- -- -- Manganese µg/l -- 83,133 -- -- -- -- Mercury C ng/l 1.3 3.1 10,000 A 910 1,700 3,400 Molybdenum µg/l -- 37,063 -- 424,138 A 636,601 A 370,000 Naphthalene µg/l -- 4,448 A -- 445 A 570 A 340 Nickel B µg/l -- 58,593 A 458 139 D 1,206 D 1,900 D Nitrate + Nitrite mg/l -- -- 242 -- -- -- Phenol µg/l -- 8,895 -- 8,483 15,747 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium µg/l -- 4,225 122 6.5 -- -- Silver µg/l -- 14,991 A -- 1.7 7.6 12 Strontium µg/l -- 1,908,000A -- 27,406 49,230 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene µg/l -- 6,671 A -- 1,124 A 1,441 A 850 Thallium µg/l -- -- -- 22 97 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Res. mg/l -- -- -- 1,774 -- -- Zinc µg/l -- 47,691 A 60,790 A 351 D 296 D 490 D

A Allocation must not exceed the Inside Mixing Zone Maximum B WLA is fixed at water quality criteria C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe, unless the requirements for an exclusion are met as listed in 3745-2-08 (L). D WLA based on applicable dissolved metals translator.


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Table 12- c. Outfall 005 and Internal Station 604 (Limited Resource Water and Fish Passage Conditions)



Human Agri Aquatic Aquatic Zone Parameter Units WildLife Health Supply E Life F Life Maximum

Aluminum B µg/l -- 5,866 -- -- -- -- Antimony B µg/l -- 1,053 -- 428 1,101 1,800 Arsenic B µg/l -- 782 A -- 333 415 680 Barium µg/l -- 216,020 A -- 408 2,429 4,000 Beryllium B µg/l -- 176 -- 61 435 670 Boron B µg/l -- 722,522 A -- 15,649 107,498 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium B µg/l -- 986 A -- 8.7 13 22 Chlorine, Total Res. B µg/l -- -- -- 25 23 38 Chromium B µg/l -- 18,898 A -- 450 D 2,645 D 3,100 D Copper B µg/l -- 86,416 A -- 45 D 55 D 77 D Cyanide, free µg/l -- 64,813 A -- 18 27 44 Fluoride µg/l -- -- -- -- -- -- Iron µg/l -- -- -- -- -- -- Lead B µg/l -- -- -- 448 D 7,483 A D 5,700 D Magnesium mg/l -- -- -- -- -- -- Manganese B µg/l -- 82,367 -- -- -- -- Mercury C ng/l 1.3 3.1 -- 910 1,700 3,400 Molybdenum B µg/l -- 36,126 -- 80,250 618,929 A 370,000 Naphthalene B µg/l -- 4,335 A -- 84 554 A 340 Nickel B µg/l -- 58,053 A -- 192 D 1,256 D 2,000 D Nitrate + Nitrite mg/l -- -- -- -- -- -- Phenol B µg/l -- 8,670 -- 1,605 15,310 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium B µg/l -- 4,186 -- 11 -- -- Silver B µg/l -- 14,853 A -- 3.0 8.0 13 Strontium B µg/l -- 1,890,000A -- 47,149 48,865 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene B µg/l -- 6,503 A -- 213 1,401 A 850 Thallium B µg/l -- -- -- 38 97 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Res. mg/l -- -- -- 2,765 -- -- Zinc B µg/l -- 47,252 A -- 461 D 313 D 500 D

A Allocation must not exceed the Inside Mixing Zone Maximum B Parameter would not require a WLA based on reasonable potential procedures, but allocation requested by Permits Group. C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe. D WLA based on applicable dissolved metals translator. E This criteria does not apply to these outfalls. F Applies only during Fish Passage Conditions (Feb-May and USGS Gage #04208000 ≥ 703 cfs). Table 12- d. Outfall 014 (Limited Resource Water and Fish Passage Conditions)


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Aluminum µg/l -- 5,672 -- -- -- -- Antimony B µg/l -- 1,014 -- 398 1,069 1,800 Arsenic B µg/l -- 753 A -- 310 403 680 Barium B µg/l -- 208,088 A -- 384 2,361 4,000 Beryllium B µg/l -- 169 -- 58 420 670 Boron B µg/l -- 648,545 A -- 14,165 95,643 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium B µg/l -- 949 A -- 8.1 13 22 Chlorine, Total Res. µg/l -- -- -- 23 23 38 Chromium B µg/l -- 18,204 A -- 416 D 2,479 D 3,100 D Copper B µg/l -- 83,242 A -- 42 D 52 D 77 D Fluoride µg/l -- -- -- -- -- -- Iron µg/l -- -- -- -- -- -- Lead B µg/l -- -- -- 408 D 6,738 A D 5,700 D Magnesium mg/l -- -- -- -- -- -- Manganese B µg/l -- 79,342 -- -- -- -- Mercury B C ng/l 1.3 3.1 -- 910 1,700 3,400 Molybdenum B µg/l -- 32,427 -- 72,642 550,670 A 370,000 Naphthalene B µg/l -- 3,891 A -- 76 493 A 340 Nickel B µg/l -- 55,922 A -- 180 D 1,215 D 2,000 D Nitrate + Nitrite mg/l -- -- -- -- -- -- Phenol B µg/l -- 7,783 -- 1,453 13,622 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium B µg/l -- 4,032 -- 11 -- -- Silver B µg/l -- 14,308 A -- 2.8 7.8 13 Strontium B µg/l -- 1,821,000A -- 43,847 47,454 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene B µg/l -- 5,837 A -- 193 1,246 A 850 Thallium B µg/l -- -- -- 35 94 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Res. mg/l -- -- -- 2,605 -- -- Zinc B µg/l -- 45,517 A -- 431 D 303 D 500 D

A Allocation must not exceed the Inside Mixing Zone Maximum B Parameter would not require a WLA based on reasonable potential procedures, but allocation requested by Permits Group. C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe. D WLA based on applicable dissolved metals translator. E This criteria does not apply to this outfall. F Applies only during Fish Passage Conditions (Feb-May and USGS Gage #04208000 ≥ 703 cfs).


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Table 12- e. Outfall 017 (Limited Resource Water and Fishing Passage Conditions)




Aluminum µg/l -- 5,504 -- -- -- -- Antimony B µg/l -- 1,800 G -- 1,800 G 1,800 G 1,800 Arsenic B µg/l -- 728 A -- 290 393 680 Barium B µg/l -- 201,193 A -- 4,000 G 4,000 G 4,000 Beryllium B µg/l -- 163 -- 54 407 670 Boron B µg/l -- 584,230 A -- 12,858 85,526 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium B µg/l -- 918 A -- 7.6 13 22 Chlorine, Total Res. µg/l -- -- -- 22 22 38 Chromium B µg/l -- 17,602 A -- 386 D 2,337 D 3,100 D Copper B µg/l -- 80,483 A -- 40 D 50 D 77 D Fluoride µg/l -- -- -- -- -- -- Iron µg/l -- -- -- -- -- -- Lead B µg/l -- -- -- 372 D 6,102 A D 5,700 D Magnesium mg/l -- -- -- -- -- -- Manganese B µg/l -- 76,712 -- -- -- -- Mercury B C ng/l 1.3 3.1 -- 910 1,700 3,400 Molybdenum B µg/l -- 29,212 -- 65,939 492,422 A 370,000 Naphthalene B µg/l -- 3,505 A -- 69 441 A 340 Nickel B µg/l -- 54,069 A -- 170 D 1,180 D 2,000 D Nitrate + Nitrite mg/l -- -- -- -- -- -- Phenol B µg/l -- 7,011 -- 1,319 12,181 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium B µg/l -- 3,898 -- 9.9 -- -- Silver B µg/l -- 13,833 A -- 2.6 7.5 13 Strontium B µg/l -- 1,761,000A -- 40,938 46,250 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene B µg/l -- 5,258 A -- 175 1,114 A 850 Thallium B µg/l -- -- -- 33 91 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Res. mg/l -- -- -- 2,465 -- -- Zinc B µg/l -- 44,009 A -- 500 D G 500 D G 500 D

A Allocation must not exceed the Inside Mixing Zone Maximum B Parameter would not require a WLA based on reasonable potential procedures, but allocation requested by Permits Group. C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe. D WLA based on applicable dissolved metals translator. E This criteria does not apply to this outfall. F Applies only during Fish Passage Conditions (Feb-May and USGS Gage #04208000 ≥ 703 cfs). G WLA fixed at Inside Mixing Zone Maximum


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Table 12- f. Outfall 022 and Internal Station 622 (Warmwater Habitat)




Aluminum µg/l -- 5,884 -- -- -- -- Antimony µg/l -- 1,057 -- 246 1,104 1,800 Arsenic µg/l -- 785 A 237 194 416 680 Barium µg/l -- 216,780 A -- 276 2,436 4,000 Beryllium µg/l -- 176 240 48 406 670 Boron µg/l -- 729,616 A -- 80,368 A 108,659 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium µg/l -- 989 A 120 A 5.7 13 22 Chlorine, Total Res. µg/l -- -- -- 14 23 38 Chromium µg/l -- 18,964 A 219 190 D 1,598 D 3,100 D Copper µg/l -- 86,720 A 1,194 A 26 D 43 D 77 D Cyanide, free µg/l -- 65,041 A -- 18 B 27 44 Fluoride µg/l -- -- 57,027 -- -- -- Iron µg/l -- -- 11,596 -- -- -- Lead B µg/l -- -- 236 5,232 D 1,336 D 5,700 D Magnesium mg/l -- -- -- -- -- -- Manganese µg/l -- 82,657 -- -- -- -- Mercury ng/l 1.3 3.1 10,000 A 910 1,700 3,400 Molybdenum µg/l -- 36,481 -- 412,141 A 625,611 A 370,000 Naphthalene µg/l -- 4,378 A -- 433 A 560 A 340 Nickel µg/l -- 58,258 A 452 639 D 1,200 D 2,000 D Nitrate + Nitrite mg/l -- -- 239 -- -- -- Phenol µg/l -- 8,755 -- 8,243 15,476 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium µg/l -- 4,201 120 6.5 -- -- Silver µg/l -- 14,905 A -- 1.7 7.6 12 Strontium µg/l -- 1,897,000A -- 27,216 49,003 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene µg/l -- 6,567 A -- 1,092 A 1,416 A 850 Thallium µg/l -- -- -- 22 97 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Res. mg/l -- -- -- 1,766 -- -- Zinc µg/l -- 47,418 A 60,020 A 1,319 D 314 D 500 D

A Allocation must not exceed the Inside Mixing Zone Maximum B WLA is based on excess loading availability from the adjusted free cyanide WLA at Outfall 002. C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe, unless the requirements for an exclusion are met as listed in 3745-2-08 (L). D WLA based on applicable dissolved metals translator.


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Table 12- g. Outfall 023 and Internal Stations 613, 633, 643, 653 (Limited Resource Water)



Human Agri Aquatic Aquatic Zone Parameter Units WildLife Health Supply Life E Life Maximum

Aluminum B µg/l -- 5,672 -- -- -- -- Antimony B µg/l -- 1,800 F -- -- 1,800 F 1,800 Arsenic B µg/l -- 753 A 523 -- 403 680 Barium B µg/l -- 208,088 A -- -- 4,000 F 4,000 Beryllium B µg/l -- 169 541 -- 420 670 Boron B µg/l -- 648,545 A -- -- 95,643 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium B µg/l -- 949 A 270 -- 13 22 Chlorine, Total Res. B µg/l -- -- -- -- 23 38 Chromium B µg/l -- 18,204 A 463 -- 2,479 D 3,100 D Copper B µg/l -- 83,242 A 2,686 -- 52 D 77 D Fluoride µg/l -- -- 10,828 -- -- -- Iron B µg/l -- -- 20,594 -- -- -- Lead B µg/l -- -- 531 -- 6,738 A D 5,700 D Magnesium mg/l -- -- -- -- -- -- Manganese B µg/l -- 79,342 -- -- -- -- Mercury B C ng/l 1.3 3.1 -- -- 1,700 3,400 Molybdenum B µg/l -- 32,427 -- -- 550,670 A 370,000 Naphthalene B µg/l -- 3,891 A -- -- 493 A 340 Nickel B µg/l -- 55,922 A 974 -- 1,215 D 2,000 D Nitrate + Nitrite B mg/l -- -- 529 -- -- -- Phenol B µg/l -- 7,783 -- -- 13,622 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium B µg/l -- 4,032 271 -- -- -- Silver B µg/l -- 14,308 A -- -- 7.8 13 Strontium B µg/l -- 1,821,000A -- -- 47,454 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene B µg/l -- 5,837 A -- -- 1,246 A 850 Thallium B µg/l -- -- -- -- 94 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Res. mg/l -- -- -- -- -- -- Zinc µg/l -- 45,517 A 135,247A -- 500 D G 500 D

A Allocation must not exceed the Inside Mixing Zone Maximum B Parameter would not require a WLA based on reasonable potential procedures, but allocation requested by Permits Group. C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe, unless the requirements for an exclusion are met as listed in 3745-2-08 (L). D WLA based on applicable dissolved metals translator. E This criteria does not apply to these outfalls. F WLA fixed at the Inside Mixing Zone Maximum


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Table 12- h. Outfall 024 (Warmwater Habitat)




Aluminum B µg/l -- 5,884 -- -- -- -- Antimony B µg/l -- 1,057 -- 246 1,104 1,800 Arsenic B µg/l -- 785 A 237 194 416 680 Barium B µg/l -- 216,780 A -- 276 2,436 4,000 Beryllium B µg/l -- 176 240 48 406 670 Boron B µg/l -- 729,616 A -- 80,368 A 108,659 A 65,000 Bromide mg/l -- -- -- -- -- -- Cadmium B µg/l -- 989 A 120 A 5.7 13 22 Chlorine, Total Res. B µg/l -- -- -- 14 23 38 Chromium B µg/l -- 18,964 A 219 190 D 1,598 D 3,100 D Copper B µg/l -- 86,720 A 1,194 A 26 D 43 D 77 D Fluoride B µg/l -- -- 57,027 -- -- -- Iron B µg/l -- -- 11,596 -- -- -- Lead B µg/l -- -- 236 5,232 D 1,336 D 5,700 D Magnesium mg/l -- -- -- -- -- -- Manganese B µg/l -- 8,2657 -- -- -- -- Mercury B C ng/l 1.3 3.1 10,000 A 910 1,700 3,400 Molybdenum B µg/l -- 36,481 -- 412,141 A 625,611 A 370,000 Naphthalene B µg/l -- 4,378 A -- 433 A 560 A 340 Nickel B µg/l -- 58,258 A 452 639 D 1,200 D 2,000 D Nitrate + Nitrite B mg/l -- -- 239 -- -- -- Phenol B µg/l -- 8,755 -- 8,243 15,476 A 9,400 Phosphorus mg/l -- -- -- -- -- -- Selenium B µg/l -- 4,201 120 6.5 -- -- Silver B µg/l -- 14,905 A -- 1.7 7.6 12 Strontium B µg/l -- 1,897,000A -- 27,216 49,003 81,000 Sulfate mg/l -- -- -- -- -- -- Tetrachloroethylene B µg/l -- 6,567 A -- 1,092 A 1,416 A 850 Thallium B µg/l -- -- -- 22 97 160 Titanium µg/l -- -- -- -- -- -- Total Filterable Res. B mg/l -- -- -- 1,766 -- -- Zinc B µg/l -- 47,418 A 60,020 A 1,319 D 314 D 500 D

A Allocation must not exceed the Inside Mixing Zone Maximum B Parameter would not require a WLA based on reasonable potential procedures, but allocation requested by Permits Group. C Bioaccumulative Chemical of Concern (BCC), WQS must be met at end-of-pipe, unless the requirements for an exclusion are met as listed in 3745-2-08 (L). D WLA based on applicable dissolved metals translator.


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Table 12- i. Summary of Ammonia Effluent Limits to Maintain Applicable Water Quality Criteria

Outfall Season Average Aquatic Life A

Maximum Aquatic Life A

ArcelorMittal 001 Summer 1.9 12.8 Winter 4.7 10.1 ArcelorMittal 002 Summer 1.9 12.8 Winter 4.7 10.1 ArcelorMittal 005 B Summer -- 12.7 Winter -- 10.0 FPC C 10.0 62.5 ArcelorMittal 014 B Summer -- 12.3 Winter -- 9.6 FPC C 9.1 59.4 ArcelorMittal 017 B Summer -- 12.0 Winter -- 9.2 FPC C 8.7 56.4 ArcelorMittal 022 Summer 1.9 12.8 Winter 4.7 10.0 ArcelorMittal 023 B Summer -- 11.4 Winter -- 9.6 ArcelorMittal 024 Summer 1.9 12.8 Winter 4.7 10.0

A All units are mg/l. B Aquatic Life use designation is Limited Resource Water C During Fish Passage Conditions (FPC)


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Table 13. Parameter Assessment Table 13- a. Outfall 001 (Warmwater Habitat) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.

Bromide Magnesium Sulfate Titanium Group 2: PEQ < 25 percent of WQS or all data below minimum detection limit. WLA not required. No

limit recommended; monitoring optional.

Aluminum Ammonia (winter) Antimony Arsenic Beryllium Boron

Cadmium Chlorine, total residual Copper Cyanide, free A Lead Manganese

Mercury Molybdenum Naphthalene

Nickel Nitrate+Nitrite Phenol

Selenium Silver Strontium A

Tetrachloroethylene Thallium Total Filterable Residue (dissolved solids) A

Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit

recommended; monitoring optional.

Ammonia (summer) Barium Chromium Fluoride Iron Zinc

Group 4: PEQmax ≥ 50 percent, but < 100 percent of the maximum PEL or PEQavg ≥ 50 percent, but < 100

percent of the average PEL. Monitoring is appropriate. No parameters meet the criteria of this group.

Group 5: Maximum PEQ ≥ 100 percent of the maximum PEL or average PEQ ≥ 100 percent of the

average PEL, or either the average or maximum PEQ is between 75 and 100 percent of the PEL and certain conditions that increase the risk to the environment are present. Limit recommended.

Limits to Protect Numeric Water Quality Criteria No parameters meet the criteria of this group.

A = Group 2 by default because sampling results were not available for this parameter. PEL = preliminary effluent limit PEQ = projected effluent quality WLA = wasteload allocation WQS = water quality standard


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Table 13- b. Outfall 002 Parameter Assessment (Warmwater Habitat) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.



Aluminum Ammonia (summer, winter) Antimony Arsenic Beryllium Boron

Cadmium Chlorine, total residual Chromium Copper Cyanide, free A Iron

Lead Manganese Mercury

Molybdenum Naphthalene Nitrate+Nitrite

Phenol Selenium Silver Strontium A Tetrachloroethylene Thallium Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Barium Fluoride Nickel Zinc


percent of the average PEL. Monitoring is appropriate. Total Filterable Residue (dissolved solids)



No parameters meet the criteria of this group.



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Table 13- c. Outfall 005 Parameter Assessment (Limited Resource Water, non-Fish Passage Conditions) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.

Bromide Fluoride Iron Magnesium Nitrate+Nitrite Sulfate

Total Filterable Residue (dissolved solids) Titanium

Group 2: PEQ < 25 percent of WQS or all data below minimum detection limit. WLA not required. No


Aluminum Ammonia (summer & winter) Antimony Arsenic Barium Beryllium Boron Cadmium Chlorine, total residual

Chromium Copper Lead Manganese Molybdenum Naphthalene

Nickel Phenol Selenium

Silver Strontium A Tetrachloroethylene Thallium Zinc Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit




percent of the average PEL. Monitoring is appropriate.

Cyanide, free Group 5: Maximum PEQ ≥ 100 percent of the maximum PEL or average PEQ ≥ 100 percent of the


Limits to Protect Numeric Water Quality Criteria Recommended Effluent Limits

Parameter Units Period Average Maximum

Mercury ng/l Annual 1.3 1,700



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Table 13- d. Outfall 005 Parameter Assessment (Limited Resource Water during Fish Passage Conditions) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.

Bromide Fluoride Iron Magnesium Nitrate+Nitrite Sulfate Titanium Group 2: PEQ < 25 percent of WQS or all data below minimum detection limit. WLA not required. No


Aluminum Ammonia (summer & winter) Antimony Arsenic Beryllium Boron Cadmium Chlorine, total residual Chromium

Copper Lead Manganese Molybdenum Naphthalene Nickel


Tetrachloroethylene Thallium Zinc Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Barium Phenol Total Filterable Residue (dissolved solids)


percent of the average PEL. Monitoring is appropriate. Cyanide, free








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Table 13- e. Outfall 014 Parameter Assessment (Limited Resource Water, non-Fish Passage Conditions) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.





Ammonia (summer & winter) Antimony Arsenic Barium Beryllium Boron Cadmium Chlorine, total residual Chromium Copper Cyanide, free A Lead

Manganese Mercury Molybdenum Naphthalene Nickel Phenol


Tetrachloroethylene Thallium Zinc Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Aluminum





Limits to Protect Numeric Water Quality Criteria

No parameters meet the criteria for this group.



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Table 13- f. Outfall 014 Parameter Assessment (Limited Resource Water during Fish Passage Conditions) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.



Ammonia (summer & winter) Antimony Arsenic

Beryllium Boron Cadmium Chlorine, total residual Chromium Copper Cyanide, free A Lead Manganese

Mercury Molybdenum Naphthalene Nickel Phenol Selenium Silver Strontium A Tetrachloroethylene

Thallium Zinc Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Aluminum Barium Total Filterable Residue (dissolved solids)





Limits to Protect Numeric Water Quality Criteria

No parameters meet the criteria for this group.

A = Group 2 by default because sampling results were not available for this parameter. PEL = preliminary effluent limit PEQ = projected effluent quality WLA = wasteload allocation WQS = water quality standard LRW = Limited Resource Water


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Table 13- g. Outfall 017 Parameter Assessment (Limited Resource Water, non-Fish Passage Conditions) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.





Ammonia (summer & winter) Arsenic Beryllium Boron Cadmium Chlorine, total residual Chromium Copper Cyanide, free A

Cyanide, total Lead Manganese

Molybdenum Naphthalene Nickel Phenol Selenium Silver

Strontium A Tetrachloroethylene Thallium Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Aluminum Antimony Barium

Group 4: PEQmax ≥ 50 percent, but < 100 percent of the maximum PEL or PEQavg ≥ 50 percent, but < 100 percent of the average PEL. Monitoring is appropriate.

Zinc






A = Group 2 by default because sampling results were not available for this parameter. PEL = preliminary effluent limit PEQ = projected effluent quality WLA = wasteload allocation WQS = water quality standard LRW = Limited Resource Water


of 154

Table 13- h. Outfall 017 Parameter Assessment (Fish Passage Conditions) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.



Arsenic Beryllium Cadmium Chlorine, total residual Chromium Copper Cyanide, free A Cyanide, total Lead Manganese Naphthalene Nickel Selenium Silver Strontium A

Tetrachloroethylene Thallium Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Aluminum Ammonia (summer & winter) Antimony Barium Boron Molybdenum

Phenol Group 4: PEQmax ≥ 50 percent, but < 100 percent of the maximum PEL or PEQavg ≥ 50 percent, but < 100

percent of the average PEL. Monitoring is appropriate. Total Filterable Residue (dissolved solids) Zinc





Mercury ng/l Annual 1.3 1,700 A = Group 2 by default because sampling results were not available for this parameter.

PEL = preliminary effluent limit PEQ = projected effluent quality WLA = wasteload allocation WQS = water quality standard


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Table 13- i. Outfall 022 Parameter Assessment (Warmwater Habitat) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.

Bromide Magnesium Phosphorus Sulfate Titanium Group 2: PEQ < 25 percent of WQS or all data below minimum detection limit. WLA not required. No


Aluminum Ammonia (winter) Antimony Arsenic Beryllium Cadmium

Chlorine, Tot. Res Chromium Iron Lead Manganese Molybdenum Naphthalene Nickel Nitrate+Nitrite

Silver Strontium A Tetrachloroethylene

Thallium Zinc Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Ammonia (summer) Barium Boron Copper Cyanide, free Fluoride Phenol Selenium


percent of the average PEL. Monitoring is appropriate.

Total Filterable Residue (dissolved solids)








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Table 13- j. Outfall 023 Parameter Assessment (Limited Resource Water) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.

Bromide Magnesium Sulfate Titanium Total Filterable Residue (dissolved solids) Group 2: PEQ < 25 percent of WQS or all data below minimum detection limit. WLA not required. No


Aluminum Ammonia (summer) Antimony Arsenic Barium Beryllium

Boron Cadmium Chlorine, total residual Chromium Copper Cyanide, free A Fluoride Iron Lead Manganese Mercury Molybdenum Naphthalene Nickel Nitrate+Nitrite

Phenol Selenium Silver Strontium A Tetrachloroethylene Thallium Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit


Ammonia (winter)




average PEL, or either the average or maximum PEQ is between 75 and 100 percent of the PEL and certain conditions that increase the risk to the environment are present. Limit recommended. Limits to Protect Numeric Water Quality Criteria

Recommended Effluent Limits Parameter Units Period Average Maximum

Zinc µg/L Annual 500 500 PEL = preliminary effluent limit PEQ = projected effluent quality WLA = wasteload allocation WQS = water quality standard


of 154

Table 13- k. Outfall 024 Parameter Assessment (Warmwater Habitat) Group 1: Due to a lack of numeric criteria, the following parameters were not evaluated at this time.



Aluminum Ammonia (summer & winter) Antimony

Arsenic Barium Beryllium Boron Cadmium Chlorine, Tot. Res Chromium Copper Cyanide, free Fluoride Iron Lead Manganese Mercury Molybdenum Naphthalene Nickel Nitrate+Nitrite

Phenol Selenium Silver Strontium Tetrachloroethylene Thallium

Total Filterable Residue (dissolved solids) Zinc

Group 3: PEQmax < 50 percent of maximum PEL and PEQavg < 50 percent of average PEL. No limit







No parameters meet the criteria of this group. PEL = preliminary effluent limit PEQ = projected effluent quality WLA = wasteload allocation WQS = water quality standard


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Table 14. Effluent Limits Table 14- a. Outfall 001 Final Effluent Limits

Concentration Loading (kg/day)

30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa pH S.U. 6.5 - 9.0 -- -- WQS

Flow Rate MGD - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb a Definitions: M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for

Industrial Waste Discharges b Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment system

performance. Table 14- b. Outfall 002 Final Effluent Limits

Concentration Loading (kg/day) a

30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisb Water Temperature °F - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

pH S.U. 6.5 – 9.0 -- -- WQS

Flow Rate MGD - - - - - - - - - - - - Monitor - - - - - - - - - - - - Md

Total Suspended Solids mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Oil and Grease mg/L 15 20 -- -- BTJ

Lead µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Zinc µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Total Filterable Residue mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - RP

Acute Toxicity Testing

Ceriodaphnia dubia TUa -- 1.00 -- -- WET

Pimephales promelas TUa - - - - - - - - - - - - Monitor - - - - - - - - - - - - WET a Loading limits are based on a flow rate of 5.665 MGD. (95th percentile of monthly averages between January 2011 – December 2015) b Definitions: BTJ = Best Technical Judgment M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for

Industrial Waste Discharges RP = Reasonable Potential for requiring water quality-based effluent limits and monitoring requirements in

permits (3745-33-07(A)) WET = Whole Effluent Toxicity (OAC 3745-33-07(B)) WQS = Ohio Water Quality Standards (OAC 3745-1) c Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment performance.


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Table 14- c. Outfall 005 Final Effluent Limits

Concentration Loading (kg/day)a 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisb High Water Temperature °F - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

pH S.U. 6.5 – 9.0 -- -- WQS

Flow Rate MGD - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mc

Ammonia mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Lead µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Zinc µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Mercury ng/L 14.0 1,700 0.0024 0.291 VAR, WQS

Chlorine, total residual mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Cyanide, free µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - RP

Total Filterable Residue mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ a Effluent loadings based on a flow rate of 45.2 MGD (95th percentile of monthly averages between January 2011 – December 2015) b Definitions: ABS = Antibacksliding Rule (OAC 3745-33-05(F) and 40 CFR Part 122.44(l)) BTJ = Best Technical Judgment M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for


permits (3745-33-07(A)) VAR = Mercury variance (OAC 3745-33-07(D)(10)(a)) WLA = Wasteload Allocation procedures (OAC 3745-2) WQS = Ohio Water Quality Standards (OAC 3745-1) c Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment system

performance. Table 14- d. Outfall 014 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa High Water Temperature °F - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

pH S.U. 6.5 – 9.0 -- -- WQS

Flow Rate MGD - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb


Oil and Grease mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Ammonia (summer, winter) mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Chlorine, total residual mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Total Filterable Residue mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - RP a Definitions: ABS = Antibacksliding Rule (OAC 3745-33-05(F) and 40 CFR Part 122.44(l)) M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for


permits (3745-33-07(A)) WQS = Ohio Water Quality Standards (OAC 3745-1) b Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment plant performance.


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Table 14- e. Outfall 017 Final Effluent Limits

Concentration Loading (kg/day)a 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisb Water Temperature °F - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

pH S.U. 6.5 – 9.0 -- -- WQS


Total Suspended Solids mg/L -- -- 105 310 ELG

Oil and Grease mg/L 15 20 16.4 25.2 ELG, BTJ

Lead, total µg/L 372 -- 0.79 2.35 ELG, WQS

Zinc, total µg/L -- 470 1.18 3.53 ELG, ABS

Chlorine, total residual mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Mercury ng/L 6.95 1,700 0.000018 0.00428 VAR, WQS

Cyanide, free µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ


pH Range Excursion, maximum duration

Minutes 60 -- -- -- GP

pH Range Excursions, > 60 minutes

#/day - - - - - - - - - - - - Monitor - - - - - - - - - - - - GP

pH Range Excursions, monthly total duration

Minutes 446 -- -- -- GP a Effluent loadings based on a flow rate of 0.665 MGD (95th percentile of monthly averages between January 2011 – December 2015) b Definitions: BTJ = Best Technical Judgment ELG = Federal Effluent Limitation Guidelines, 40 CFR Part 420; see Attachment 2

GP = General Provisions, 40 CFR 401.17 M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for


permits (3745-33-07(A)) VAR = Mercury variance (OAC 3745-33-07(D)(10)(a)) WQS = Ohio Water Quality Standards (OAC 3745-1) c Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment plant

performance.


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Table 14- f. Outfall 022 Final Effluent Limits

Concentration Loading (kg/day)a 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisb Water Temperature °F - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

pH S.U. 6.5 – 9.0 -- -- WQS


Oil and Grease mg/L 15 20 -- -- BTJ

Zinc µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Lead µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Copper µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Chlorine, total residual mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Mercury ng/L 2.7 1,700 0.00003 0.0188 VAR, WLA

Cyanide, free µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - RP


Acute Toxicity Test

Ceriodaphnia dubia TUa -- 1.00 -- -- WET

Pimephales promelas TUa - - - - - - - - - - - - Monitor - - - - - - - - - - - - WET a Effluent loadings are based on a flow rate of 2.92 MGD (95th percentile between January 2011 – December 2015) b Definitions: BTJ = Best Technical Judgment M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for


permits (3745-33-07(A)) VAR = Mercury variance (OAC 3745-33-07(D)(10)(a)) WLA = Wasteload Allocation procedures (OAC 3745-2) WQS = Ohio Water Quality Standards (OAC 3745-1) c Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment plant

performance.


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Table 14- g. Outfall 023 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa Biochemical Oxygen Demand, 5-day

mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Chemical Oxygen Demand mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

pH S.U. - - - - - - - - - - - - Monitor - - - - - - - - - - - - M



Oil and Grease mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - M

Ammonia mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - RP

Zinc µg/L -- 500 -- 0.178 WQS

Total Filterable Residue mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Rainfall Inches - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ a Effluent loadings are based on a flow rate of 2.92 MGD (95th percentile between January 2011 – December 2015) b Definitions: BTJ = Best Technical Judgment M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for

Industrial Waste Discharges WQS = Ohio Water Quality Standards (OAC 3745-1) c Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment plant

performance.

d Stormwater monitoring requirements are excluded from this table. Table 14- h. Outfall 024 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa pH S.U. 6.5 – 9.0 -- -- WQS

Flow Rate MGD - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb a Definitions: M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for

Industrial Waste Discharges WQS = Ohio Water Quality Standards (OAC 3745-1) b Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment plant

performance. c Stormwater monitoring requirements are excluded from this table.


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Table 14- i. Internal Stations 601, 602, and 603 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa Internal Station 601

pH S.U. - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb


Total Suspended Solids mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc

Oil and Grease mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc

Lead, total µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc

Zinc, total µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc



pH S.U. - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb


Total Suspended Solids mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc

Oil and Grease mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc

Lead, total µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc

Zinc, total µg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - ELGc




Total Suspended Solids mg/L -- -- 632 1,284 ABS, BTJ

Oil and Grease mg/L -- -- 485 672 ABS, BTJ

Lead, total µg/L 79 -- 1.69 8.26 ELG, WQS

Zinc, total µg/L -- 296 3.74 6.34 ELG, WQS

Total Filterable Residue mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ a Definitions: ABS = Antibacksliding Rule (OAC 3745-33-05(F) and 40 CFR Part 122.44(l))

BTJ = Best Technical Judgment ELG = Federal Effluent Limitation Guidelines, 40 CFR Part 420; see Attachments 1-2 M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for

Industrial Waste Discharges WLA = Wasteload Allocation procedures (OAC 3745-2) WQS = Ohio Water Quality Standards (OAC 3745-1) b Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment plant

performance. c Federal effluent limitation guideline limits are applicable at Calculated Station 603.


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Table 14- j. Internal Station 604 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa pH S.U. - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb


Total Suspended Solids mg/L -- -- 219 660 ABS, BTJ

Cyanide, total mg/L -- -- 7.53 15.0 ELG

Lead, total µg/L -- -- 0.753 2.261 ELG

Zinc, total µg/L -- -- 1.13 3.39 ELG


Ammonia (summer, winter) mg/L -- -- 224 294 301(g) - 2010

a Definitions: 301(g) - 2010 = Clean Water Act Section 301(g) variance limits for ammonia submitted in 2010 301(g) – 2001 = Clean Water Act Section 301(g) variance limits for ammonia approved in 2001 ABS = Antibacksliding Rule (OAC 3745-33-05(F) and 40 CFR Part 122.44(l)) BTJ = Best Technical Judgment ELG = Federal Effluent Limitation Guidelines, 40 CFR Part 420 and/or 433; see Attachments 1-2

M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for Industrial Waste Discharges

b Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment system performance. Table 14- k. Internal Stations 613 and 633 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa Biochemical Oxygen Demand, 5-day

mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Chemical Oxygen Demand mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

pH S.U. - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb


Total Suspended Solids mg/L 30 45 -- -- BTJ

Oil and Grease mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Sulfate mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ a Definitions: BTJ = Best Technical Judgment M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for

Industrial Waste Discharges

b Water quality standards apply at Final Outfall 023. c Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment system

performance.


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Table 14- l. Internal Stations 607, 617, and 622 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa Mercury ng/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - VAR

a Definitions: VAR = Mercury variance (OAC 3745-33-07(D)(6)(v)) Table 14- m. Internal Station 622 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa pH S.U. - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb


Total Suspended Solids mg/L -- -- 251 732 ABS, BTJ

Oil and Grease mg/L -- -- 73.9 218.9 ELG

Lead, total µg/L -- -- 1.62 4.86 ELG

Zinc, total µg/L -- 314 2.44 3.47 ELG, WQS

Total Filterable Residue mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ a Definitions: ABS = Antibacksliding Rule (OAC 3745-33-05(F) and 40 CFR Part 122.44(l)) BTJ = Best Technical Judgment

ELG = Federal Effluent Limitation Guidelines, 40 CFR Part 420 and/or 433; see Attachment 2 M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for Industrial Waste Discharges

WQS = Ohio Water Quality Standards (OAC 3745-1) b Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment system

performance. Table 14- n. Internal Stations 643 and 653 Final Effluent Limits

Concentration Loading (kg/day) 30 Day Daily 30 Day Daily Parameter Units Average Maximum Average Maximum Basisa BOD5 mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Chemical Oxygen Demand mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

pH S.U. - - - - - - - - - - - - Monitor - - - - - - - - - - - - Mb


Total Suspended Solids mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Oil and Grease mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ

Sulfate mg/L - - - - - - - - - - - - Monitor - - - - - - - - - - - - BTJ a Definitions: BTJ = Best Technical Judgment M = Best Engineering Judgment of Permit Guidance 2: Determination of Sampling Frequency Formula for

Industrial Waste Discharges

b Water quality standards apply at Final Outfall 023. c Monitoring of flow and other indicator parameters is specified to assist in the evaluation of effluent quality and treatment system

performance.


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Attachment 1. Applicable Federal Effluent Limitation Guidelines 40 CFR 420 – IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY C5 & C6 Iron Blast Furnace Subpart C, Ironmaking Subcategory 40 CFR 420.32(a) – Best Practicable Control Technology 40 CFR 420.33(a) – Best Available Technology

Parameter

Loading Limits (kg/1,000 kg of product or lbs/1,000 lbs of product)

30-day Average Daily Maximum

Total Suspended Solids 0.0260 0.0782

Ammonia 0.00292 0.00876

Cyanide, total 0.000876 0.00175

Phenols 0.0000292 0.0000584

Lead 0.0000876 0.000263

Zinc 0.000131 0.000394

pH 6.0 – 9.0 S.U. No. 1 & 2 Basic Oxygen Furnace Subpart D, Steelmaking Subcategory 40 CFR 420.42(b) – Best Practicable Control Technology 40 CFR 420.43(b) – Best Available Technology

Parameter




Lead 0.0000626 0.000188

Zinc 0.0000939 0.000282

pH 6.0 – 9.0 S.U. Vacuum Degasser Subpart E, Vacuum Degassing Subcategory 40 CFR 420.54 – New Source Performance Standards

Parameter




Lead 0.0000313 0.0000939

Zinc 0.0000469 0.000141

pH 6.0 – 9.0 S.U.


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Continuous Casting Subpart F, Continuous Casting Subcategory 40 CFR 420.64 – New Source Performance Standards

Parameter




Oil and Grease 0.00104 0.00313

Lead 0.0000313 0.0000939

Zinc 0.0000469 0.000141

pH 6.0 – 9.0 S.U. 84” Hot Strip Mill Subpart G, Hot Forming Subcategory 40 CFR 420.73 – Best Available Technology 40 CFR 420.77(c)(1) – Best Conventional Technology

Parameter




Oil and Grease 0.0321 a 0.107

Lead b 0.000108 0.000325

Zinc b 0.000163 0.000488

pH 6.0 – 9.0 S.U. a Based on best technical judgment, this value shall be equal to 30% of the maximum limit b Development Document for Effluent Limitations Guidelines and Standards for the Iron and Steel Manufacturing Point Source Category, Volume IV, “Hot Forming Subcategory”, Table X-1, EPA 440/1-82/024, May 1982. 84” Hydrochloric Acid Pickling Subpart I, Acid Pickling Subcategory 40 CFR 420.93(b)(2) – Best Available Technology 40 CFR 420.97(b)(2) – Best Conventional Technology

Parameter





Lead 0.000175 0.000526

Zinc 0.000234 0.000701

pH 6.0 – 9.0 S.U.


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84” Hydrochloric Acid Pickling Subpart I, Acid Pickling Subcategory 40 CFR 420.93(b)(4) – Best Available Technology 40 CFR 420.97(b)(4) – Best Conventional Technology

Parameter

Loading Limits (kg/day)




Lead 0.0123 0.0368

Zinc 0.0164 0.0491

pH 6.0 – 9.0 S.U. 84” Tandem Mill (recirculation, multiple stands) Subpart J, Cold Forming Subcategory 40 CFR 420.102(a)(2) – Best Practicable Control Technology 40 CFR 420.103(a)(2) – Best Available Technology

Parameter a





Lead b 0.0000156 0.0000469

Zinc b 0.0000104 0.0000313

pH 6.0 – 9.0 S.U. a The permittee has been granted a monitoring waiver for naphthalene and tetrachloroethylene per 40 CFR 122.44(a)(2) b Limitations for lead and zinc are applicable in lieu of those for chromium and nickel because cold rolling wastewaters are not treated with descaling or combination acid pickling wastewaters 84” Temper Mill (direct application, single stand) Subpart J, Cold Forming Subcategory 40 CFR 420.102(a)(4) – Best Practicable Control Technology 40 CFR 420.103(a)(4) – Best Available Technology

Parameter a





Lead b 0.0000563 0.000169

Zinc b 0.000113 0.0000376

pH 6.0 – 9.0 S.U. a The permittee has been granted a monitoring waiver for naphthalene and tetrachloroethylene per 40 CFR 122.44(a)(2) b Limitations for lead and zinc are applicable in lieu of those for chromium and nickel because cold rolling wastewaters are not treated with descaling or combination acid pickling wastewaters


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Hot Dip Galvanizing Subpart L, Hot Coating Subcategory 40 CFR 420.124(a)(1) – New Source Performance Standards

Parameter





Lead 0.0000939 0.000282

Zinc 0.000125 0.000376

pH 6.0 – 9.0 S.U. Hot Dip Galvanizing Fume Scrubber Subpart L, Hot Coating Subcategory 40 CFR 420.124(c)

Parameter

Loading Limits (kg/day)




Lead 0.0123 0.0368

Zinc 0.0164 0.0491

pH 6.0 – 9.0 S.U.


of 154

Attachment 2. Calculation of Loading Limits Using Federal Effluent Guidelines For limits based on production rates, the loading limit based on each Federal Effluent Limitation Guideline (ELG) is:

,

∗ ∗,

∗

. .

For limits based on concentration limits, the loading limit is based on each FEG is:

∗ ∗1

10

The loading limit of each parameter can be calculated using the information from Attachment 1. INTERNAL STATIONS 601, 602, 603, & 693 ArcelorMittal Stations 601, 602, 603, and 693 are subject to the ELGs found in 40 CFR Parts 420 and 433. Except for scrubber and electrogalvanizing operations, the loading limits are based on the production rate of the operations. More details can be found in Attachment 1. Station 601 The production and applicable ELG of each operation at Outfall 601 is summarized in the table below.

Operation Federal Effluent Guidelines Production (tons/day) 84” Hot Strip Mill 420.72(c)(1), 420.73(c)(1) 14,601 84” Acid Pickle Line 420.92(b)(2), 420.93(b)(2) 5,191 84” Acid Pickling Scrubber 420.92(b)(4), 420.93(b)(4) --

Loadings for total suspended solids, oil and grease, lead, and zinc are listed below. Note that these limits will not be included in the permit under Station 601. Instead, the sum of loading limits at Stations 601 and 602 will be included in Calculated Station 603. Operation Loading Limit (kg/day)

Total Suspended Solids Oil and Grease Lead Zinc 30-Day

Avg. Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

84” Hot Strip Mill 2,119 5,656 425.2 1,417 1.431 4.305 2.159 6.464 84” Acid Pickle Line 164.8 385.7 55.10 164.8 0.824 2.477 1.102 3.301 84” Acid Pickling Scrubber 2.450 5.720 0.819 2.450 0.012 0.037 0.016 0.049 Total 2,287 6,047 481.1 1,585 2.267 6.819 3.277 9.814


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Station 602 The production and applicable FEG of each operation at Station 602 is summarized in the table below.

Operation Federal Effluent Guidelines Production (tons/day) 84” Tandem Mill 420.102(a)(2), 420.103(a)(2) 5,872 84” Temper Mill 420.102(a)(4), 420.103(a)(4) 3,754 Hot Dip Galvanizing 420.124(a)(1) 2,282 Hot Dip Galvanizing Scrubber 420.124(c) --

Loadings for total suspended solids, oil and grease, lead, and zinc are listed below. Note that these limits will not be included in the permit under Outfall 602. Instead, the sum of loading limits at Stations 601 and 602 will be included in Calculated Station 603. Operation Loading Limit (kg/day)


Avg. Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

84” Tandem Mill 16.67 33.35 5.540 13.90 0.083 0.250 0.055 0.167 84” Temper Mill 38.48 76.63 12.80 31.98 0.192 0.576 0.128 0.385 Hot Dip Galvanizing 38.92 90.68 12.96 38.92 0.194 0.584 0.259 0.778 Hot Dip Galvanizing Scrubber 2.450 5.720 0.819 2.450 0.012 0.037 0.016 0.049 Total 96.53 206.4 32.12 87.25 0.482 1.446 0.459 1.379 Calculated Station 603 Station 603 is a calculated outfall where limits are the sum of the loadings in Station 601 and Station 602. Loading limits are listed below. Operation Loading Limit (kg/day)


Avg. Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

Outfall 601 2,287 6,047 481.1 1,585 2.267 6.819 3.277 9.814 Outfall 602 96.53 206.4 32.12 87.25 0.482 1.446 0.459 1.379 Total 2,383 6,254 513.2 1,672 2.748 8.265 3.736 11.19


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INTERNAL MONITORING STATION 604 The production and applicable FEGs of each operation at Station 604 is summarized in the table below.

Operation Federal Effluent Guidelines Production (tons/day) C5 Blast Furnace 420.32(a), 420.33(a) 5,010 C6 Blast Furnace 420.32(a), 420.33(a) 4,545

Loading limits are listed below. Operation Loading Limit (kg/day)

Total Suspended Solids

Ammonia a Cyanide, total Phenols Lead Zinc

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

C5 Blast Furnace 118.2 355.4 13.27 39.81 3.981 7.954 0.133 0.265 0.398 1.195 0.595 1.791 C6 Blast Furnace 105.4 316.9 11.83 35.50 3.550 7.092 0.118 0.237 0.355 1.066 0.531 1.597 Total 223.5 672.3 25.10 75.31 7.531 15.05 0.251 0.502 0.753 2.261 1.126 3.387 a See Attachment 5 for Antidegradation information.


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OUTFALL 017 The production and applicable FEG of each operation at Outfall 017 is summarized in the table below.

Operation Federal Effluent Guidelines Production (tons/day) No. 1 Basic Oxygen Furnace 420.42(b), 420.43(b) 8,402 Vacuum Degasser 420.54 1,953 Continuous Casting 420.64 8,875 Process Area Storm Water 420.08 --

Loadings for total suspended solids, oil and grease, lead, and zinc are listed below. Operation Loading Limit (kg/day)


Avg. Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

No. 1 Basic Oxygen Furnace 79.27 237.8 -- -- 0.477 1.433 0.716 2.149 Vacuum Degasser 4.624 12.93 -- -- 0.055 0.166 0.083 0.250 Continuous Casting 21.01 58.77 8.373 25.20 0.252 0.756 0.378 1.135 Process Area Storm Water a -- -- 8.000 -- -- -- -- -- Total 104.9 309.5 16.37 25.20 0.785 2.355 1.176 3.534 a Based on best technical judgment, an addition 8 kg/day is allotted to stormwater treated at this outfall INTERNAL MONITORING STATION 622 Process Wastewater The production and applicable FEG of each operation at Station 622 is summarized in the table below.

Operation Federal Effluent Guidelines Production (tons/day) No. 2 Basic Oxygen Furnace 420.42(b), 420.43(b) 2,705 Continuous Casting 420.64 2,688

Non-Categorical Process Wastewater and Process Area Stormwater Non-process wastewater and process area stormwater are combined with the process wastewater before discharging out of Station 622. According to 40 CFR 420.08, these flows are subject to limits based on best professional judgment (BPJ) and will be considered when calculating the effluent limits.

Operation Flow rate (gpm) Process area storm water & groundwater 850 Basic Oxygen Furnace Cooling Tower 50

The allowable loading for the non-process wastewater and process area stormwater can be calculated by using the following equation:

∗ ∗ 60 ∗ 24 ∗3.785

∗1

10

The BPJ limits are listed in the table below.


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Operation

Best Professional Judgment Limits (mg/L) Total Suspended

Solids Oil and Grease Lead Zinc

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

Process Area Stormwater & Groundwater

50 a 150 a 15 b 45 c 0.3 d 0.9 d 0.45 d 1.35 d

Basic Oxygen Furnace Cooling Tower

20 e 25 e 15 b 20 b 0.011 f 0.015 g 0.038 f 0.057 g

a Development Document for Effluent Limitations Guidelines and Standards for the Iron and Steel Manufacturing Point Source Category, Volume III, “Steel Making Subcategory”, Table IX-2, EPA 440/1-82/024, May 1982. b Wastewater Quality Standards c The daily maximum limit is three times the 30-day average limit d Development Document for Effluent Limitations Guidelines and Standards for the Iron and Steel Manufacturing Point Source Category, Volume III, “Steel Making Subcategory”, Table XI-1, EPA 440/1-82/024, May 1982. e Projected Effluent Quality from Outfall 017; Table 7 f Projected Effluent Quality from Outfall 622; Table 7 g Maximum concentration level; Table 6

Loading Limits Operation Loading Limit (kg/day)


Avg. Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

30-Day Avg.

Daily Max.

No. 2 Basic Oxygen Furnace 25.52 76.56 -- -- 0.154 0.461 0.230 0.692 Continuous Casting 6.365 17.80 2.536 7.633 0.076 0.229 0.114 0.344 Process Area Storm Water 231.7 695.0 69.50 208.5 1.390 4.170 2.085 6.255 Basic Oxygen Furnace Cooling Tower 5.451 6.814 1.908 2.725 0.003 0.004 0.009 0.026 Total 269.0 796.2 73.94 218.9 1.623 4.864 2.439 7.316


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Attachment 3. Implementation of Limits – Water Quality Standards and Effluent Limit Guidelines

Outfall 002 and Calculated Station 603 Water Quality Standard

(Outfall 002; 5.655 MGD) Effluent Limitation Guideline

(Station 603) Historical Highest Permitted Load

(Station 603) Concentration (µg/L) Load (kg/day) Load (kg/day) Load (kg/day) Pollutant 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max TSS a -- -- -- -- 2,378 6,245 632 1,284 Oil and Grease a 15,000 b 20,000 b 321 428 512 1,668 485 672 Lead 79.0 1,344 1.69 c 28.8 2.73 8.26 3.12 8.24 Zinc d 351 296 7.51 6.34 c 3.74 11.15 6.09 14.7

a Based on best technical judgment, internal outfall limits for these parameters are to be based on anti-backsliding procedures b These limits are the current limits based on best technical judgement, not water quality standards. c As requested by the ArcelorMittal, this limit shall be applied to Outfall 603 instead of Outfall 002. d The average monthly limits are not applicable because they are higher than the daily maximum limits. The lowest limits applied to Outfall 002 are underlined. The lowest limits applied to Outfall 603 are italicized.

Outfalls 005 and Internal Station 604 Water Quality Standard


(Internal Station 604) Historical Highest Permitted Load

(Internal Station 604) Concentration (µg/L) Load (kg/day) Load (kg/day) Load (kg/day) Pollutant 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max TSS a -- -- -- -- 223 672 219 660 Oil and Grease 15,000 b 20,000 b 2,566 3,422 -- -- -- -- Ammonia c Phenols 1,605 9,400 275 1,608 0.25 0.50 0.246 0.493 Lead 448 7,483 76.7 1,280 0.75 2.26 0.75 2.22 Zinc 461 313 78.9 53.5 1.13 3.39 1.00 2.83

a Based on best technical judgment, internal outfall limits for Total Suspended Solids are to be based on anti-backsliding procedures b These limits are based on best technical judgement, not water quality standards. c Ammonia variance request was granted (Attachment 4) The lowest limits applied to Outfall 005 are underlined. The lowest limits applied to Outfall 604 are italicized.


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Outfall 017 Water Quality Standard


(Outfall 017) Previous Permitted Load

(Outfall 017) Concentration (µg/L) Load (kg/day) Load (kg/day) Load (kg/day) Pollutant 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max TSS -- -- -- -- 105 310 132 390 Oil and Grease 15,000 a 20,000 a 37.8 50.3 16.4 25.2 18.1 30.4 Lead 372 b 5,700 0.94 14.3 0.785 2.36 0.98 2.94 Zinc 500 b, c 500 / 470 d 1.26 1.26 e 1.18 3.53 e 1.47 4.41

a These limits are based on best technical judgment, not water quality standards. b These concentration limits based on water quality standards will be implemented instead of concentration limits set by production-based standards (ELGs). c The average monthly limits are not applicable because they are lower than the daily maximum limits. d Although the water quality standard is 500 µg/L, the current limit of 470 µg/L will be implemented due to antibacksliding regulations in OAC 3745-33-05(F). e ArcelorMittal requested that the ELG loading limit is implemented instead of the water quality standard loading limit; the water quality standard is already protected by concentration limits. The limits implemented at Outfall 017 are italicized.

Outfalls 022 and Internal Station 622 Water Quality Standard


(Station 622) Historical Highest Permitted Load

(Station 622) Concentration (µg/L) Load (kg/day) Load (kg/day) Load (kg/day) Pollutant 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max. 30-day Avg. Daily Max TSS a -- -- -- -- 269 796 251 732 Oil and Grease 15,000 b 20,000 b 166 221 73.9 219 75.8 221 Lead 236 1,336 2.61 14.8 1.62 4.86 1.46 4.38 Zinc c 1,319 314 14.6 3.47 d 2.44 7.32 2.25 6.65

a Based on best technical judgment, internal outfall limits for Total Suspended Solids are to be based on anti-backsliding procedures b These limits are based on best technical judgment, not water quality standards. c The average monthly limits are not applicable because they are higher than the daily maximum limits. d As requested by ArcelorMittal, this limit shall be applied to Outfall 622 instead of Outfall 022. The limits applied to Outfall 022 are underlined. The limits applied to Outfall 622 are italicized.


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Attachment 4. Ammonia 301(g) Variance Review

Season Loading Limits (kg/day) BPT BAT WLA Current Limit Proposed

Limits Summer 30-day Avg. 461.7 25.10 -- 62.4 224 Daily Max. 1,384 75.31 2,173 85.6 294 Winter 30-day Avg. 461.7 25.10 -- 81.6 224 Daily Max. 1,384 75.31 1,711 211 294 Fish Passage Conditions 30-day Avg. 461.7 25.10 1,711 -- 224 Daily Max. 1,384 75.31 10,693 -- 294

BPT = Best Practicable Technology; 40 CFR 420.32(a) BAT = Best Available Technology; 40 CFR 420.33(a) WLA = Wasteload Allocation The wasteload allocation (WLA) is calculated by the following equation:

∗ ∗1

10 ∗10 1 .

∗3.785

Where: WLA = WasteLoad Allocation WQS = Water Quality Standard;


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Table 12- i Flow = 45.2 MGD (95th percentile of monthly average flows)


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Attachment 5. List of Approved Boiler/Cooling Water System Additives Outfall 002

Plant Location Product Name Purpose Discharge Concentration at Outfall (mg/L)

HDG Line GE Betz Continuum AEC3107 Corrosion Control 1.0 HDG Line GE Betz Dianodic DN2761 Corrosion Control 2.0 HDG Line GE Betz Spectrus BD1550 Deposit Control 0.4 HDG Line GE Betz Corrshield NT4201 Corrosion Control 0.8 HDG Line MDC700 HDG Line DCL30 HDG Line MCT103 HDG Line GE Steamate PAS4011 Steam Condensate

Treatment 0.06

HDG Line GE Betz Spectrus NX1100 Corrosion Control 0.08 HDG Line GE Genguard GN7004 Scaling Control 0.01 HDG Line GE Genguard 8020 Corrosion Control 0.004 HDG Line Sodium Hypochlorite Condenser Treatment 0.038 HDG Line Sulfuric Acid Dechlorination 1.0 Cold Mill PY5200 Cold Mill DN2200 Cold Mill GE Genguard GN7004 Scaling Control 0.01 Hot Mill PY5200 Hot Mill AC9502 Hot Mill MS6206 Hot Mill GE Genguard GN7004 Scaling Control 0.03 Strip Mill WTP Polyfloc CE1167 Strip Mill WTP Scaletrol PDC2712 Strip Mill WTP Klaraid PC2712 Strip Mill WTP Polyfloc AE1125 Strip Mill WTP Flogard POT6100 Strip Mill WTP Polyfloc AE1702 Strip Mill WTP GE Betz DG5671 Finishing Department Cooling Water System

Ge Flogard MS6206 0.02

HDG Line = Hot Dip Galvanizing Line WTP = Water Treatment Plant


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Attachment 5. List of Approved Boiler/Cooling Water System Additives (continued) Outfall 005


Basic Oxygen Furnace Spray Cooling System

Scaletrol GCP9389


Polyfloc AE1125


Klaraid PC1192


Polyfloc CE2672

C5&6 Blast Furnace WTP

Klaraid PC1192


Scaletrol PDC9316


Novus CE2672


Polyfloc AE1125


Flogard POT6100


GE Betz Scaletrol Inhibit Corrosion 0.128

#3 Powerhouse Boiler Feed

Nalco Nexguard 22300 Boiler Treatment


Nalco 1720 Boiler Treatment


Nalco 750 Boiler Treatment


Nalco 1801 Condensate Treatment


Nalco BLR-3715 Boiler Pretreatment 0.001


Nalco Pol-EZ 2706 Flocculant 0.005


Sodium Hypochlorite Condenser Treatment


Sodium Bisulfite Outfall Dechlorination

#3 Powerhouse Boiler Feed and C5&6 Blast Furnace Cooling Syst.

Nalco 1315 Asiatic Clam Treatment 10


Nalco H-130M Asiatic Clam Treatment < 0.001


Nalco 7468 Asiatic Clam Treatment 10


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20% Caustic Soda Boiler Pretreatment


Nalco 3DT121 Scaling Control 2


Nalco PC-191T Scaling Control 0.0072


Nalco 7408 Scaling Control 0.0192


Nalco Nexguard 22301 Corrosion Control 0.21


Nalco Sensomer CL50 Corrosion Control 0.004


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Nalco Nexguard 22300 Boiler Treatment

Nalco 1720 Boiler Treatment Nalco 750 Boiler Treatment Nalco 1801 Condensate Treatment Nalco BLR-3715 Boiler Pretreatment 0.001 Nalco Pol-EZ 2706 Flocculant 0.006 Sodium Hypochlorite Condenser Treatment Sodium Bisulfite Outfall Dechlorination Nalco 1315 Asiatic Clam Treatment 10 Nalco H-130M Asiatic Clam Treatment < 0.001 Nalco 7468 Asiatic Clam Treatment 10 Nalco Nexguard 22301 Corrosion Control 0.08 Nalco Sensomer CL50 Corrosion Control 0.014


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#1 BOF – LMF PDC9316 #1 BOF – LMF PY5200 #1 BOF – LMF AT3202 #1 BOF – LMF BL5304 #1 BOF – LMF GE Betz Dianodic DN2761 Corrosion Control 2.5 #1 BOF – LMF NX1106 #1 Caster GE Betz Continuum AEC 3107 0.14 #1 Caster GE Betz Dianodic DN2761 Corrosion Control #1 Caster GE Betz Spectrus NX1100 #1 Caster Ge Scaletrol PDC 9317 Steam Condensate

Treatment 0.27

Caster Steel Plant Flogard MS6212 Caster Steel Plant Glogard MS6205 Caster Steel Plant Depositrol PY5200 Caster Steel Plant GE Betz Spectrus BD1501E 1.5 Caster Steel Plant Polyfloc AP1120 Caster Steel Plant Klaraid CDP1310 Caster Steel Plant Polyfloc AE1125 Caster Steel Plant Klaraid IC1172 LMF Scrubber Depositrol PY5200 LMF Scrubber Klaraid IC1172 LMF Scrubber Polyfloc AE1125 LMF Scrubber Foamtrol AF1140 East Caster Mold Cooling

Nalco 3DT179 Corrosion Control 0.03

East Caster Mold Cooling

Nalco 3DT120 Cooling Water Treatment 0.03


Nalco 3DT199 Cooling Water Treatment 0.02


Nalco 9353 Scale Inhibitor/Dispersant 0.06


Nalco 7357 Corrosion Control 0.01


Nalco 8735 pH Stabilizer 0.05


Nalco 7320 Microorganism Control 0.03


Nalco 7330 Biocide 0.07


Gengard GN7004 Scaling Control 0.01


Gengard GN8240 Corrosion Control 0.02


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East Steel Plant Recycle Cooling Water System

Gengard GN7004 Dispersant 1.0

East BOF Scrubber Fan Gengard GN7004 Dispersant 0.01 East LMF De-Gas Cooling System

Gengard GN7004 Dispersant 0.01

East LMF De-Gas Cooling System

Genguard GN6001 Deposit Control 0.003

East BOF Lance Cooling System


East Caster Mold Machine Cooling System


LMF = Ladle Metallurgy Furnace BOF = Basic Oxygen Furnace


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#2 Caster PC1192 #2 Caster Depositrol PY5200 Corrosion Control 4.32 #2 Caster Flogard MS6205 Corrosion Control 0.13 #2 Caster Continuum AEC3107 Inhibit Corrosion /

Deposit Control 0.38

#2 Caster BD1550 #2 Caster Corrshield AZ8104 Corrosion Control 1.536 #2 Caster Scaletrol PDC9317 Corrosion Control 2.60 #2 Caster GE Betz Spectus NX1100 Corrosion Control 0.15 #2 Caster GE Betz Spectrus CT1300 Biofouling Control 0.019 #2 Caster Foamtrol AF1440 0.58 #2 Caster Sodium Hypochlorite < 0.01 #2 Caster GE Gengard GN7004 Dispersant 0.75 #2 Caster GE Gengard GN8020 Corrosion Control 0.45 #2 Caster Nalco 3DT120 Cooling Water Treatment 0.47 #2 Caster Nalco 3DT199 Cooling Water Treatment 0.3 #2 Caster Nalco 9353 Scale Inhibitor/Dispersant 0.8 #2 Caster Nalco 7357 Corrosion Control 0.41 #2 Caster Nalco 8735 pH Stabilizer 0.27 #2 Caster GE Gengard GN8240 Corrosion Control 0.7 #2 Caster Chemtreat CL5857 Corrosion Control 0.4 #2 Caster Chemtreat CL4125 Corrosion Control 0.2 #2 Caster Chemtreat CL1377 Corrosion Control 0.2 #2 Caster Chemtreat CL215 Microbiocide 0.03 #2 Caster Chemtreat CL206 Microbiocide 0.3 #2 Caster Chemtreat CL49 Microbiocide 0.07 #2 Caster Nalco 3DT179 Corrosion Control 11 #2 Caster Nalco 3DT104 Corrosion Control 0.3 #2 Caster Nalco 7320 Microorganism Control 0.1 #2 Caster Nalco 7330 Biocide 0.7 Central Treatment Klaraid IC1172 Corrosion Control 0.58 Central Treatment Klaraid PC1192 Central Treatment Polyfloc AE1702 Central Treatment Foamtrol AF1440 #2 BOF GE Betz Dianodic DN2761 Corrosion Control 1.92 #2 BOF PDC9323 #2 BOF Continuum AEC 3107 1.92 #2 BOF Sodium Hypochlorite < 0.01 #2 BOF GE Gengard GN7004 Dispersant 0.25 #2 BOF Nalco 3DT120 Cooling Water Treatment 4.5 #2 BOF Nalco 3DT177 Corrosion Control 4.0 #2 BOF Nalco 7385 Scale Control 1.0


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Attachment 6. Storm Water Sampling Data Outfall 002 (Finishing Mill Area) Sampling Date: November 14, 2011 Rainfall Duration: 3.5 hours Total Rainfall: 0.16 Inches Time since last rain event: > 72 hours

Pollutant Units First Flush (Grab) Composite Units Total Suspended Solids mg/L 15 18 Total Dissolved Solids mg/L 450 490 Oil and Grease mg/L 4.29 Not Applicable Biochemical Oxygen Demand mg/L 3.3 3.01 Chemical Oxygen Demand mg/L 49.9 26.8 pH S.U. 7.3 Not Applicable Arsenic µg/L < 10 < 10 Cadmium µg/L < 10 < 10 Chromium µg/L < 10 < 10 Copper µg/L < 10 < 10 Lead µg/L < 10 < 10 Zinc µg/L < 10 < 10

Outfall 005 (Ironmaking Area) Sampling Date: September 19, 2011 Rainfall Duration: 7 hours Total Rainfall: 0.10 Inches Time since last rain event: > 72 hours

Pollutant Units First Flush (Grab) Composite Units Total Suspended Solids mg/L 6 6 Total Dissolved Solids mg/L 456 474 Oil and Grease mg/L < 2.4 Not Applicable Biochemical Oxygen Demand mg/L < 2.0 < 2.0 Chemical Oxygen Demand mg/L 55.4 30.1 pH S.U. 7.70 Not Applicable Ammonia mg/L 0.44 0.60 Arsenic µg/L < 10 < 10 Cadmium µg/L < 10 < 10 Chromium µg/L < 10 < 10 Copper µg/L < 10 < 10 Lead µg/L < 10 < 10 Zinc µg/L < 10 < 10


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Outfall 009 (Slag Processing & Former Coke Plant Area) Sampling Date: November 22, 2011 Rainfall Duration: 3.5 hours Total Rainfall: 0.22 Inches Time since last rain event: > 72 hours

Pollutant Units First Flush (Grab) Composite Units Total Suspended Solids mg/L 1,700 600 Oil and Grease mg/L 21.9 3.85 Biochemical Oxygen Demand mg/L 5.3 < 2.0 Chemical Oxygen Demand mg/L 364 92.6 pH S.U. 11.2 Not Applicable Total Kjeldahl Nitrogen mg/L 5.83 3.32 Total Phosphorus mg/L 1.74 0.40 Arsenic µg/L 31.7 16.4 Cadmium µg/L 11.0 < 10 Chromium µg/L 180 33.6 Copper µg/L 80.3 17.0 Lead µg/L 200 31.3

Outfall 024 (Steel Producing Area) Sampling Date: October 10, 2011 Rainfall Duration: 3.5 hours Total Rainfall: 0.15 Inches Time since last rain event: > 72 hours

Pollutant Units First Flush (Grab) Composite Units Total Suspended Solids mg/L 15 12 Oil and Grease mg/L 2.4 Not Applicable Biochemical Oxygen Demand mg/L < 2.0 < 2.0 Chemical Oxygen Demand mg/L 24.6 22.5 pH S.U. 6.99 Not Applicable Arsenic µg/L < 10 < 10 Cadmium µg/L < 10 < 10 Chromium µg/L 12 < 10 Copper µg/L < 10 < 10 Lead µg/L < 10 < 10


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Attachment 7. Supplemental Monitoring Data This data was submitted to Ohio EPA on May 12, 2017 and November 3, 2017, for the purpose of revising the Preliminary Effluent Quality (PEQ) concentrations.

Date

Outfall 001 Outfall 002 Outfall 022

Zinc (µg/L) Ammonia

(mg/L) Barium (µg/L)

Ammonia (mg/L)

Ammonia (mg/L)

4/11/2012 a 160 0.3 32 0.28 --

6/19/2012 a -- -- -- -- 0.41

3/14/2017 ND (10) 0.36 42 ND (0.3) ND (0.3)

3/16/2017 ND (10) ND (0.3) 44 ND (0.3) ND (0.3)

3/21/2017 ND (10) 0.33 71 ND (0.3) ND (0.3)

3/23/2017 ND (10) 0.32 80 ND (0.3) ND (0.3)

3/28/2017 ND (10) ND (0.3) 63 ND (0.3) ND (0.3)

3/30/2017 ND (10) 0.33 56 ND (0.3) ND (0.3)

4/25/2017 ND (10) -- -- -- --

4/27/2017 ND (10) -- -- -- --

5/3/2017 ND (10) -- -- -- --

5/9/2017 ND (10) -- -- -- --

5/11/2017 ND (10) -- -- -- --

5/16/2017 ND (10) -- -- -- --

5/17/2017 16 -- -- -- -- a Data from this date was already supplied in the NPDES Renewal Application Form (see Table 5) ND = Non-detect; sample is below the detection level in parentheses

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