ML22122A056

2021 Annual Environmental Operating Report (Non-Radiological)

ML22122A056
Person / Time
Site:	Beaver Valley
Issue date:	05/02/2022
From:	Energy Harbor Nuclear Corp
To:	Office of Nuclear Reactor Regulation
References
L-22-111
Download: ML22122A056 (100)

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2021 Annual Environmental Operating Report (Non-Radiological) (Report follows) I

RTL# A9.630F I I,ENERGY HARBOR NUCLEAR CORPORATION BEAVER VALLEY POWER STATION I I I I I I I I I I 2021

ANNUAL ENVIRONMENTAL OPERATING REPORT I NON-RADIOLOGICAL UNIT NOs. 1 AND 2 I LICENSES DPR-66 AND NPF-73 I

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I I 5.1.1 BEAVER VALLEY POWER STATION ENVIRONMENTAL & CHEMISTRY SECTION I I Technical Report Approval I 2021 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT I (Non-Radiological)

UNITS NO. 1 AND 2 I LICENSES DPR-66 AND NPF-73 I Prepared by: Cameron L. Lange (Via E-mail)

• Date: 11-20-2021 I

Prepared by: Ron Bigley 7-~ Date, II Reviewed by: Amy Savage~µ Lb,~ Date:_l\\~/ __ \\;S......... / J...... c'.).,_ __

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I Reviewed by: RobertWinters ~Date:_y+-<-{\\....;;3;..1,/_z_z. __ _ I I I I I I I I I TABLE OF CONTENTS I 1.0 EXECUTIVE

SUMMARY

............................................................................................................. l I

1.1 INTRODUCTION

........................................................................................................................ 1 1.2

SUMMARY

& CONCLUSIONS............................................................................................... 2 1.3 ANALYSIS OF SIGNIFICANT ENVIRONMENTAL CHANGE........................................ 2 I 1.4 AQUATIC MONITORING PROGRAM EXECUTIVE 

SUMMARY

.................................. 2

2.0 ENVIRONMENTAL PROTECTION PLAN NON-COMPLIANCES..................................... 3 I 3.0 CHANGES INVOLVING UN-REVIEWED ENVIRONMENTAL QUESTIONS.................. 3 4.0 NON-ROUTINE ENVIRONMENTAL REPORTS..................................................................... 3 I 5.0 AQUATIC MONITORING PROGRAM..................................................................................... 3 5.1 SITE DESCRIPTION................................................................................................................. 3 5.2 METHODS.................................................................................................................................. 4 I 5.2.1 Corbicula Density Determinations for Cooling Tower Reservoirs................................. 4

5.2.2 Corbicula Juvenile Monitoring.......................................................................................... 5 I 5.2.3 Zebra Mussel Monitoring................................................................................................... 5 5.2.4 Reports................................................................................................................................. 6 5.3 AQUATIC MONITORING PROGRAM RESULTS.............................................................. 6 I 5.3.1 Corbicula Monitoring Program......................................................................................... 7

5.3.2 Corbicula Juvenile Monitoring.......................................................................................... 8 I 5.3.3 Zebra Mussel Monitoring Program.................................................................................. 8 6.0 ZEBRA MUSSEL AND CORBICULA CONTROL ACTIVITIES.......................................... 10 I

7.0 REFERENCES

.............................................................................................................................. 11 8.0 TABLES......................................................................................................................................... 13 9.0 FIGURES...... *................................................................................................................................. 15 I 10.0 PERMITS...................................................................................................................................... 24

Attachment 10.1.................................................................................................................................... 24 I Attachment 10.2.................................................................................................................................... 25 I I I I I I I LIST OFT ABLES I 5.1 Beaver Valley Power Station (BVPS) Sampling Dates for 2021. I 5.2 Unit I Cooling Reservoir Monthly Sampling Corbicula Density Data for 2021 from BVPS. I 5.3 Unit 2 Cooling Reservoir Monthly Sampling Corbicula Density Data for 2021 from BVPS. I I I I I I I I I I I I

11 I I I I LIST OF FIGURES I

5.1 Location of Study Area, Beaver Valley Power Station Shippingport, Pennsylvania I BVPS.

5.2 Comparison of Live Corbicula Clam Density Estimates Among BVPS Unit l Cooling Tower Reservoir Sample Events for Various Clam Shell Size Groups, I 2021.

5.3 Comparison of Live Corbicula Clam Density Estimates Among Unit 2 Cooling I Tower Reservoir Sample Events for Various Clam Shell Size Groups, 2021.

5.4 Comparison of Live Corbicula Clam Density Estimates Among Intake Structure I Sample Events for Various Clam Shell Size Groups, 2021.

5.5 Water Temperature and River Elevation Recorded on the Ohio River at the BVPS Intake Structure, During Monthly Sampling Dates, 2021. I 5.6 Density of Zebra Mussel Veligers (#/m3) Collected at Beaver Valley Power Station; Intake Structure, Unit 1 Cooling Tower Reservoir and Unit 2 Cooling I Tower Reservoir, 2021. 5.7 Density of Zebra Mussel Veligers (#/m3) Collected at Beaver Valley Power Station; I Barge Slip, Impact Basin and Emergency Outfall, 2021.

5.8 Density (#/m2 ) of Settled Zebra Mussels at Beaver Valley Power Station; Intake Structure, Unit 1 Cooling Tower Reservoir and Unit 2 Cooling Tower Reservoir, I 2021.

5.9 Density (#/m2 ) of Settled Zebra Mussels at Beaver Valley Power Station; Barge I Slip, Impact Basin and Emergency Outfall, 2021. I I I I I

lll I I I I

1.0 EXECUTIVE

SUMMARY

I I.I INTRODUCTION

This report is submitted in accordance with Section 5.4.1 of Appendix B: To Facility Operating I License No. NPF-73, Beaver Valley Power Station Unit 2, Environmental Protection Plan (Non Radiological). Beaver Valley Power Station (BVPS) is operated by Energy Harbor, formerly FirstEnergy Nuclear Operating Company (FENOC). The Objectives of the Environmental Protection I Plan (EPP) are to:

e Verify that the facility is operated in an environmentally acceptable manner, as established by the Final Environmental Statement-Operating License Stage (FES-OL) and other I Nuclear Regulatory Commission (NRC) environmental impact assessments,

° Keep plant operations personnel appraised of changes in environmental conditions that may I affect the facility,

e Coordinate NRC requirements and maintain consistency with other Federal, State, and local I requirements for environmental protection, and

o Keep the NRC informed of the environmental effects of facility construction and operation and of actions taken to control those effects. I To achieve the objectives of the Environmental Protection Plan (EPP), both Energy Harbor and BVPS have written programs and procedures to comply with the EPP, protect the environment, and comply with governmental requirements primarily including the US Environmental Protection Agency (EPA) and the Pennsylvania Department of Environmental Protection (PAD EP) requirements. Water quality matters identified in the Final Environmental Statements-Operating License Stage (FES-OL) are regulated under the National Pollutants Discharge Elimination System (NPDES) Permit No. I PA0025615. Waste is regulated under EPA Identification No. PAR000040485. Attachment 10.l contains a listing of permits and certificates for environmental compliance. I The BVPS programs and procedures include pre-work and pre-project environmental evaluations, operating procedures, pollution prevention and response programs procedures and plans, process improvement and co1Tective action programs, and human performance programs. Technical and managerial monitoring of tasks, operations, and other activities are performed. Any identified I challenges, concerns, or questions are captured in the Energy Harbor Corrective Action Program with a Condition Report. Condition Reports are reviewed and closed through investigations, cause determinations, and corrective actions. I During 2021 BVPS continued an Aquatic Monitoring Program to provide infonnation on potential

impacts to BVPS operation from macrofoulers such as Asian clams (Corbicula) and zebra mussels. I I I 2021 Annual Environmental Report Energy Harbor, BVPS I I I I

1.2

SUMMARY

& CONCLUSIONS There were no significant environmental events and no significant changes to operations that affect I the environment made at Beaver Valley Power Station in 2021.

1.3 ANALYSIS OF SIGNIFICANT ENVIRONMENTAL CHANGE I

During 2021 no significant changes were made at Beaver Valley Power Station to cause any significant negative impacts on the environment. I

1.4 AQUATIC MONITORING PROGRAM EXECUTIVE

SUMMARY

The 2021 Beaver Valley Power Station (BVPS) Units I and 2 Non-Radiological Monitoring Program I consisted of an Aquatic Program that included surveillance and field sampling of the Ohio River's aquatic life in the vicinity of the station. Historically, the Aquatic Program was an annual program conducted to provide baseline aquatic resources data, to assess the impact of the operation of BVPS I on the aquatic ecosystem of the Ohio River, and to monitor for potential impacts of biofouling organisms (Corbicula and zebra mussels) on BVPS operations. This is the 46 th year of operational environmental monitoring for Unit 1 and the 35 th year for Unit 2. In 2021, similar to the previous I four years, no fish or benthic macroinvertebrate sampling occurred, however, the zebra mussel and Corbirnla monitoring programs were continued.

The monthly reservoir ponar samples collected at the Unit I and 2 cooling towers and the three I samples collected in the Ohio River at the intake during 2021 indicated that Corbicula were present in the Ohio River and entering the station. In 2021, seven (7) settled live and four ( 4) dead Corbicula were collected from the Unit 1 cooling tower reservoir during monthly ponar sampling. Also in 2021, I 29 live and 12 dead settled Corbicula were collected from the Unit 2 cooling tower reservoir. Further, seven (7) live Corbicu/a were collected from the Ohio River at the intake during three sampling events in 2021. Juvenile Corbicula were also collected in pump samples collected in 2021. The overall low numbers of live Corbicula collected in the samples collected outside the intake and cooling towers I in 2021 compared to levels in the /980's, likely reflects a natural decrease in the density of Corbicula in the Ohio River near B VPS. However, the continued presence of Corbicula adults and juveniles in and near B VPS indicates that they could still impact the facility if the current I control program is not continued. Continued monitoring of Corbicula densities is also recommended to determine whether changes in the Corbicula populations that could impact facility operations are occurring. I

In 1995, live macrofouling zebra mussels were collected for the first time by divers in the BVPS main intake and auxiliary intake structures during scheduled cleanings. Zebra Mussels have been found at BVPS every year since. Overall, both the number of observations and densities of settled mussels in I 2021 were consistent to those recorded in 2008-2020, and much higher than the preceding five years. Although densities of settled mussels are lower than other populations such as the Lower Great Lakes, densities present in the Ohio River are more than sufficient to cause problems in the operation of I untreated cooling water intake systems. Whether the population of zebra mussels in this reach of the Ohio River will remain the same or increase cannot be determined. In any case, the densities of mussels that presently exist are more than sufficient to impact the B VPS if continued prudent I monitoring and control activities are not conducted.

2 202 l Annual Environmental Report I Energy Harbor, BVPS I I I I

2.0 ENVIRONMENTAL PROTECTION PLAN NON-COMPLIANCES I There were no Environmental Protection Plan non-compliances identified in 2021.

3.0 CHANGES INVOLVING UN-REVIEWED ENVIRONMENTAL QUESTIONS I No Un-reviewed Environmental Questions were identified in 2021. Therefore, there were no changes

involving an Un-reviewed Environmental Questions. I 4.0 NON-ROUTINE ENVIRONMENTAL REPORTS

On November 1, 2021, Energy Harbor Nuclear Corp. was issued a renewal of their NP DES Permit I No: PA00256 l 5. A copy of this pennit is attached to this report.

5.0 AQUATIC MONITORING PROGRAM I This section of the report summarizes the Non-Radiological Environmental Program conducted for the BVPS Units 1 and 2; Operating License Numbers DPR-66 and NPF-73. This is a non-mandatory program, because on February 26, 1980, the NRC granted BVPS's request to delete all of the Aquatic I Monitoring Program, with the exception of the fish impingement program (Amendment No. 25), from the Environmental Technical Specifications (ETS). In 1983, BVPS was permitted to also delete the fish impingement studies from the ETS program of required sampling along with non-radiological I water quality requirements. In 2017, BVPS elected to not conduct the fish and benthic macroinvertebrate tasks related to this program. The zebra mussel and Corbicula monitoring tasks were maintained and conducted as in previous years. I The objectives of the 2021 environmental program were:

e To evaluate the presence, growth, and reproduction of macrofouling Corbicu!a (Asiatic I clam) and zebra mussels (Dreissena spp.) at BVPS.

0 To keep plant operations appraised of any of changes in environmental conditions that may affect the facility. I These objectives have assisted facility personnel in the past. For instance, in the facility's Significant Operating Experience Report (SOER 07-2, October 2008) relative to "Intake Cooling Water Blockage" this Aquatic Monitoring Program was credited as a means of addressing "Changing I Environmental Conditions" by looking "for changes in quantity of clam and mussel activity by monitoring the veliger ( commonly known as larvae) density in the river and mussel settlement density." I 5.1 SITE DESCRIPTION

BVPS is located on an approximately 453-acre tract of land on the south bank of the Ohio River in I the Borough of Shippingport, Beaver County, Pennsylvania. The Shippingport Atomic Power Station once shared the site with BVPS, before being decommissioned. Figure 5.1 is a plan view of BVPS. The site is approximately 1 mile ( 1.6 km) from Midland, Pennsylvania; 5 miles (8 km) from East I Liverpool, Ohio; and 25 miles (40 km) from Pittsburgh, Pennsylvania. The population within a 5-rnile (8 km) radius of the plant is approximately 18,000. The Borough of Midland, Pennsylvania has

3 I 202 I Annual Environmental Report Energy Harbor, BVPS I I I I

a population of approximately 3,500. The station is situated at Ohio River Mile 34.8 (Latitude: 40° 36' 18"; Longitude: 80° 26' 02) at a I

location on the New Cumberland Pool that is 3.1 river miles (5.3 km) downstream from Montgomery Lock and Darn and 19.6 miles (31.2 km) upstream from New Cumberland Lock and Dam. The I Pennsylvania-Ohio-West Virginia border is 5.2 river miles (8.4 km) downstream from the site. The river flow is regulated by a series of dams and reservoirs on the Beaver, Allegheny, Monongahela, and Ohio Rivers and their tributaries. I The study site lies along the Ohio River in a valley that has a gradual slope that extends from the river at an elevation of 665 ft. (203 m) above mean sea level; to an elevation of 1,160 ft. (354 rn) along a ridge south of BVPS. The plant entrance elevation at the station is approximately 735 ft. (224 rn) I above mean sea level.

BVPS Units I and 2 have a thermal rating of 2,900 megawatts (MW). Units I and 2 have a design electrical rating of974 MW and 1,009 MW, respectively. The circulating water systems for each unit I are considered a closed cycle system with continuous overflow, using a cooling tower to minimize heat released to the Ohio River. Commercial operation of BVPS Unit I began in 1976 and Unit 2 began operation in 1987. I

5.2 METHODS

Civil & Environmental Consultants, Incorporated (CEC Inc.) was contracted to perform the 2021 I Aquatic Monitoring Program as specified in BVBP-ENV-00 I-Aquatic Monitoring (procedural guide). This procedural guide references and describes in detail the field and laboratory procedures used in the various monitoring programs, as well as the data analysis and reporting requirements. I These procedures are summarized according to task in the following subsections. Sampling was conducted according to the schedule presented in Table 5. I. 5.2.1 Corbicula Density Determinations for Cooling Tower Reservoirs I

The Corbicula Monitoring Program at BVPS includes sampling the circulating river water and the service water systems of the BVPS (intake structure and cooling towers). The objectives of the I ongoing Monitoring Program were to evaluate the presence of Corbicula at BVPS and to evaluate the potential for and timing of infestation of the BVPS. This program was conducted in conjunction with a program to monitor for the presence of macrofouling zebra mussels (see Section 5.2.3 ). I

Corbicula enter the BVPS from the Ohio River by passing through the water intakes, and eventually settling in low flow areas including the lower reservoirs of the Units I and 2 cooling towers. Corbicula residing in the cooling water system can also produce young that will settle in the system. The density I and growth of these Corbicula were monitored by collecting monthly samples from the lower reservoir sidewalls and sediments. The sampler used on the sidewalls consisted of a O-frame net attached behind a 24-inch long metal scraping edge. This device was connected to a pole long enough I to allow the sampler to extend down into the reservoir area from the outside wall of the cooling tower. Sediments were sampled with a petite Ponar dredge. All equipment was tied off prior to sampling to prevent equipment from accidently falling into the reservoirs. I

4 2021 Annual Environmental Report I Energy Harbor, BVPS I I I I

Cooling tower reservoir sampling was historically conducted once per month. Beginning in I December 1997, it was decided to forego sampling in cold water months, since buildup and growth of Corbicula does not occur then. Monthly sampling has been maintained throughout the warmer water months of the year. In 2021, sampling was completed as scheduled, beginning in April and ending in October. I In 2021, once each month (April through October), a single petite Ponar grab sample was taken in the reservoir of each cooling tower to obtain density and growth information on Corbirnla present in the I bottom sediment. The samples collected from each cooling tower were returned to the laboratory and processed. Samples were individually washed, and any Corbicula removed and rinsed through a series of stacked U.S. Standard sieves that ranged in mesh size from 1.00 mm to 9.49 mm. Live and I dead clams retained in each sieve were counted and the numbers were recorded. The size distribution data obtained using the sieves reflected clam width, rather than length. Samples containing a small number of Corbicula were not sieved; individuals were measured and placed in their respective size categories. A scraping sample of about 12 square feet was also collected at each cooling tower during I each monthly sampling effort. This sample was processed in a manner consistent with the petite ponar samples. All samples were successfully collected except from Cooling Tower 2 in October when an outage precluded sampling. I 5.2.2 Corbicula Juvenile Monitoring

The Corbicula juvenile study was designed to collect data on Corbicula spawning activities and I growth of individuals entering the intake from the Ohio River. From 1988 through 1998, clam cages were deployed in the intake forebay to monitor for Corbicula that entered the BVPS. I During the 1998 sampling season, at the request of BVPS personnel, all clam cages were removed after the May collection. Monthly petite ponar grabs from the forebay in the intake building continued thereafter. Samples were processed in the same manner as Cooling Tower samples (Section 5.2.1 ). I From 2002 to present, because of site access restrictions, sampling with the petite ponar has been moved to the Ohio River directly in front of the Intake Structure Building. Collections are presently scheduled to be made in May, July, and September. During each sampling month two ponar grabs are I taken just offshore of the intake building. These grab samples are processed in the same manner as when they were collected during monthly sampling. I 5.2.3 Zebra Mussel Monitoring

The Zebra Mussel Monitoring Program includes sampling the Ohio River and the circulating river water system of the BVPS. I The objectives of the Monitoring Program are:

( 1) To identify if zebra mussels were in the Ohio River adjacent to BVPS and provide early I warning to operations personnel as to their possible infestation;

(2) To provide data as to when the larvae were mobile in the Ohio River and insights as to their I vulnerability to potential treatments; and (3) To provide data on their overall density and growth rates under different water temperatures

5 I 2021 Annual Environmental Report Energy Harbor, BVPS I I I I

and provide estimates on the time it requires these mussels to reach the size and density that could impact the plant. I The zebra mussel sampling for settled adults was historically conducted once per month throughout the year. Beginning in December 1997, it was decided to forego sampling in the colder water months of each year, since buildup of zebra mussels and growth of the individuals that were present, does not I occur. Monthly sampling has been maintained throughout the balance of the year. In 2021 sampling occurred from April through October. A pump sample for zebra mussel veligers was collected at the barge slip location monthly from April I through October in 1996 and 1997. The scope of the sampling was expanded in 1998 to also include the Ohio River near the intake structure. In June 1998, the Emergency Outfall and the Emergency Outfall Impact Basin (impact basin) locations were also added. Additional pump samples were I collected from the cooling towers of Unit 1 and Unit 2 in October 1998. In 2021, veliger sampling began in April and was conducted monthly through October. At the Intake Structure and Barge Slip the following surveillance techniques were used: I

a Wall scraper sample collections on a monthly basis from the barge slip and the riprap near the intake structure to detect attached adults; and I

t!) Pump sample collections from the barge slip and outside the intake structure, to detect the planktonic early life forms. I At each of the cooling towers the following techniques were used:

" Monthly reservoir scraper sample collections in each cooling tower; and I

e Monthly pump samples to detect planktonic life forms. At the Emergency Outfall and the impact basin the following techniques were used: I a Monthly scraper sample collections in each; and

9 Monthly pump samples in each to detect planktonic life forms. 5.2.4 Reports I

Each month when sampling was perfonned, activity reports summarizing the activities that took place the previous month were prepared and submitted. These reports included the results of the monthly I Corbicula and zebra mussel monitoring including any trends observed and any preliminary results available. The reports addressed progress made on each task and reported any observed biological activity of interest. I

5.3 AQUA TIC MONITORING PROGRAM RES UL TS

The following sections summarize the findings for each of the program elements. Sampling dates for I each of the program elements are presented in Table 5.1. I

6 I 2021 Annual Environmental Report Energy Harbor, BVPS I I I I

5.3.1 Corbicula Monitoring Program I In 2021, no sampling was conducted at the Unit 2 cooling tower reservoir in October due to a scheduled outage. All other sampling was successfully conducted as scheduled. I In 202 I, seven (7) settled live Corbicula were collected from the Unit I cooling tower reservoir during monthly ponar sampling (Table 5.2 and Figure 5.2). Three (3) were collected in June and were between 4.75 mm and 9.5 mm, which indicated that they had settled in 2020. Two (2) settled live I Corbicula was collected in August and were in the 3.3 5 - 4. 7 4 mm size class, which indicated that they had settled earlier in 2021. Two (2) additional live Corbicula (between 3.35 mm and 4.74 mm) were collected in October and also likely settled earlier in 2021. Four ( 4) dead Corbicula were also I collected in 202 I in the Unit 1 cooling tower reservoir and were likely killed during scheduled molluscicide treatments. The seasonal average density of settled live Corbicula was 43/m"-, which was comparable to 2020 (37/m2), but less than in 2019 (60/m 2 ). Corbicula juveniles were also collected in monthly pump samples collected in the Unit 1 cooling tower reservoir in May through I August. No Corbicula were collected in the scraping samples.

In 2021, 29 live settled Corbicula were collected from the Unit 2 cooling tower reservoir (Table 5.3 I and Figure 5.3). Live mussels were collected in all months sampled. No sampling was conducted in October due to a unit outage. They ranged in size from 2.00 mm to >9.5 mm, which indicated that some likely settled in 2021 while other settled in prior years. Twelve ( I 2) dead Corbicula were also collected during 2021. The dead Corbicula were collected in all sampled months except June and I were probably killed by scheduled molluscicide treatments. The seasonal average density of settled live Corbicula was 208/m2, which was two times higher than collected in 2020. The highest density of settled live Corbicula occurred in the April sample when a density of 344 Corbicula/m2 was I present. Corbicula juveniles were collected in monthly pump samples collected in the Unit 2 cooling tower reservoir in June, July and August. No Corbicula were collected in the scraping samples. I Corbicula juveniles were collected at non cooling tower locations during monthly pump sampling from May through September 2021. From June through August Corbicula juveniles were collected at all locations. In May they were collected at the Emergency Outfall and the impact basin. In September they were collected only at the barge slip. Densities of Corbicula juveniles reached 570 I individuals/m 3 in the June barge slip sample. This indicates that there is a significant reproducing population of Corbicula in the vicinity of the BVPS that could impact plant operations if steps are not taken to control the Asiatic Clams. I In 2021, BVPS continued its Corbicu!a control program that included the use of a molluscicide to prevent the proliferation of Corbicula within BVPS. BVPS was granted permission by the PADEP to use a molluscicide to target the Unit I river water system and the Unit 2 service water system. I In 1990 through I 993, the rnolluscicide applications focused on reducing the Corbicula population throughout the entire river water system of each BVPS plant (Units I and 2). In 1994 and 1995, the I applications targeted the internal water systems; therefore, the molluscicide concentrations in the cooling towers were reduced during applications. Consequently, adult and juvenile Corbicula in the cooling towers often survived the applications. Reservoir sediment samples taken after rnolluscicide I applications represent mortality of Corbicula in the cooling tower only and do not reflect mortality in BVPS internal water systems.

7 I 2021 Annual Environmental Report Energy Harbor, BVPS I I ~-----------------------------------------------------, I I

The monthly reservoir sediment samples and pump samples collected in Units I and 2 Cooling Towers in 202 I and in recent years demonstrated that Corbicula were entering and colonizing the I reservoirs. An average density of 43 live settled Corbiculalm 2 was collected in the Unit l cooling tower and 208/m2 in the Unit 2 cooling tower in 202 I. A density of344 live Corbicu!a/m2 collected in the Unit 2 cooling tower reservoir in April is likely a high enough density to cause operational I impacts if the clams were not controlled and instead were allowed to mature, grow and reproduce. Corbicula juveniles were also in the cooling tower pump samples as well as at all other pump sampling locations, which indicates that they still are available for establishment in the cooling towers. The recent decrease of Corbicula at the BVPS returns densities to levels more consistent I with densities in the Ohio River in the mid-l 990's, but well below those present during the l 980's. Whether the relatively low density of Corbicu!a in 2021 is indicative of permanent lower levels in the environment or due to natural variability is uncertain, however, and continued monitoring of I Corbicu!a densities is recommended.

5.3.2 Corbicula Juvenile Monitoring I

Figure 5.4 presents the abundance and size distribution data for samples collected in the Ohio River near the intake structure by petite ponar dredge in 2021. Seven (7) live Corbicula were collected in 2021; the same number of live individuals collected in 2020. In 2021, they ranged in size from the I 4.75 mm to greater than 9.5 mm and were likely spawned in 2020 or 2021. Live individuals were collected during each of the three sampling events. A spring/early-summer spawning period typically occurs in the Ohio River near BVPS each year when preferred spawning temperatures are reached I (60-65° F) (Figure 5.5). The offspring from this spawning event generally begin appearing in the sample collections in July. The settled clams then generally increase in size throughout the late summer and fall. The number of individuals collected per sampling event in 2021 were comparable 2020 but was less than in 2019 and 2018. This is most likely due to normal variability in the I population in the Ohio River. In any case, the densities of Corbicula continue to be low relative what was present in the l 980's. The overall low numbers of live Corbicula collected in the samples taken outside the intake in 2021, I

compared to levels in the I 980's, likely reflects a natural decrease in the density of Corbicu!a in the Ohio River near BVPS, although the continued presence of Corbicula adults and juveniles near BVPS I indicates that they could impact the facility if the current control program is not continued. Continued monitoring of Corbicula densities is also recommended to determine whether changes in the Corbicula populations that could impact facility operations are occurring. I 5.3.3 Zebra Mussel Monitoring Program

Zebra mussels (Dreissena po!ymorpha and the closely related species Dreissena bugensis) are exotic I freshwater mollusks that have ventrally flattened shells, which are generally marked with alternating dark and lighter bands. They are believed to have been introduced into North America through the ballast water of ocean-going cargo vessels probably from Eastern Europe. They were first identified in Lake St. Clair in 1988 and rapidly spread to other Great Lakes and the Mississippi River drainage I system, and have become abundant in the lower, middle, and upper Ohio River. They use strong adhesive byssal threads, collectively referred to as their byssus, to attach themselves to any hard surfaces (e.g. intake pipes, cooling water intake systems, and other mussels). Responding to NRC I

8 2021 Annual Environmental Report I Energy Harbor, BVPS I I I I

Notice No. 89-76 (Biofouling Agent-Zebra Mussel, November 21, 1989), BVPS instituted a Zebra I Mussel Monitoring Program in January 1990. Studies have been conducted each year since then.

Spawning begins as water temperature reach approximately 57° F and peaks at water temperatures of I 74° F. The veliger form is a small, planktonic form of the zebra mussel that remains in the water column for approximately two weeks prior to settling and transforming into the adult. Veliger densities usually peak about two weeks after the optimum water temperature for spawning is reached. Veliger densities then fall off as veligers mature and settle, although female mussels continue to I broadcast mature eggs throughout the season. River water temperatures in April was below 55° F, which is below the low end of the spawning range (Figure 5.5). River water temperature in July reached 78° F, which is the optimum spawning temperature and was still 63° Fin October. I Zebra mussels were detected in both the pump samples (Figures 5.6 and 5.7) and the substrate samples (Figure 5.8 and 5.9) in 2021. Veligers were collected at all of the six sites that were sampled in 2021. Zebra mussels were collected in veliger pump samples from May through September. No veligers I were collected in April or October samples.

Veligers were present at all sampled locations from June through August. In May they were collected I at'all locations except in the sample collected from the Ohio River near the intake structure. In September they were collected (in low densities) only at the barge slip, the impact basin and the emergency outfall. By sampling location, the highest annual densities in zebra mussel veligers I occurred in May at the barge slip, the Unit 1 Cooling Tower, the impact basin and the emergency outfall. The densities peaked in August at the Ohio River near the intake and the Unit 2 Cooling Tower. Throughout the year, the majority of the veligers were D-form, which were very recently spawned and not able to settle. The percentage of mussels capable of settling generally increased I throughout the sampling season.

The greatest density of veligers in any sample collected in 2021 was present in the sample collected I at the barge slip in May (8,367/m3 ). This was less than the highest veliger density found in 2020 (20,520/m 3 ), 2019 ( 48,500/m 3 ), or 2018 (28,750/m3). The density of mussels were, however, sufficient to contribute to significant settlement and potential fouling ofBVPS systems. I As in past years, in 2021, settled zebra mussels were frequently collected in scrape samples taken at the barge slip and the intake structure (Figures 5.8 and 5.9). In 2021 they were not collected at any other location. The highest density of settled mussels in any sample collected was at the barge slip I (8.52 mussels/m 2) in the October sample. The mussels collected at the barge slip and intake structure included individuals that were capable of reproducing as well as mussels settled during 2021. Overall, both the number of observations and densities of settled mussels in 2020 were consistent to those I recorded in 2008-2021, and much higher than the preceding 5 years.

Although densities of settled mussels are low compared to other populations such as the Lower Great Lakes, densities comparable to those in the Ohio River are sufficient to cause problems in the I operation of untreated cooling water intake systems.

Whether the population of zebra mussels in this reach of the Ohio River will remain the same or I increase cannot be determined. In any case, the densities of mussels that presently exist are more than sufficient to impact BVPS if continued prudent monitoring and control activities are not conducted.

9 I 2021 Annual Environmental Report Energy Harbor, BVPS I I I I I

6.0 ZEBRA MUSSEL AND CORBICULA CONTROL ACTIVITIES I In 2021, B VPS continued its Corbicula and zebra mussel control program (33rc1 year), which includes the use of a molluscicide to prevent the proliferation of Corbiculct and zebra mussels within BVPS. BVPS was granted permission by the PADEP to use a molluscicide to target the Unit I river water I system and the Unit 2 service water system.

In 1990 through 1993, the molluscicide applications (CT-I) focused on reducing the Corbicula I population throughout the entire river water system of each BVPS plant (Units I and 2). In 1994 through 2006, the CT-I or CT-2 (reformulated CT-I) applications targeted zebra mussels and Corbicula in the internal water systems; therefore, the molluscicide concentrations in the cooling towers were reduced during CT-I or CT-2 applications. Consequently, adult and juvenile Corbicula I in the cooling towers often survived the applications. Reservoir sediment samples taken after CT-I or CT-2 applications represented mortality of Corbicula in the cooling tower only and do not reflect mortality in BVPS internal water systems. In 2007 BVPS began using Nalco Hl50M as the I molluscicide. This product, which has the same active ingredients as the CT-2 and CT-2, was applied in the same manner.

In addition to clamicide treatments, preventive measures were taken that included quarterly cleaning I of the Intake Bays. The bay cleanings are intended to minimize the accumulation and growth of mussels within the bays. This practice prevents creating an uncontrolled internal colonization habitat. I I I I I I

10 2021 Annual Environmental Report Energy Harbor, BVPS I I I I

7.0 REFERENCES

I Counts, C. C. III, 1985. Distribution of Corbicula.fluminea at Nuclear Facilities. Division of Engineering, U.S. Nuclear Regulatory Commission. NUREGLCR. 4233. 79 pp. I FENOC, 2003. Annual Environmental Operating Report, Non-radiological. First Energy Nuclear Operating Company, Beaver Valley Power Station, Unit No. l & 2. 113 pp. I FENOC, 2004. Annual Environmental Operating Report, Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. l &2. 82 pp.

FENOC, 2005. Annual Environmental Operating Report, Non-radiological. First Energy Operating I Company, Beaver Valley Power Station, Unit No. l &2. 82 pp.

FENOC, 2006. Annual Environmental Operating Report, Non-radiological. First Energy Operating I Company, Beaver Valley Power Station, Unit No. I &2. 82 pp.

FENOC, 2007. Annual Environmental Operating Report, Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. 1&2. 82 pp.

FENOC, 2008. Annual Environmental Operating Report, Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. I &2. 82 pp. I FENOC, 2009. Annual Environmental Operating Report, Non-radiological. First Energy Operating

Company, Beaver Valley Power Station, Unit No. I &2. 82 pp. I FENOC, 2010. Annual Environmental Operating Report, Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. I &2. 82 pp. I FENOC, 2011. Annual Environmental Operating Report, Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. I &2. 82 pp. I FENOC, 2012. Annual Environmental Operating Report, Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. 1&2. 82 pp.

FENOC, 2013. Annual Environmental Operating Report, Non-radiological. First Energy Operating I Company, Beaver Valley Power Station, Unit No. I &2. 82 pp.

FENOC, 2014. Annual Environmental Operating Report, Non-radiological. First Energy Operating I Company, Beaver Valley Power Station, Unit No. 1&2. 82 pp.

FENOC, 2015. Annual Environmental Operating Report, Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. 1&2. 83 pp. I FENOC, 2016. Annual Environmental Operating Report Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. l &2. 83 pp. I FENOC, 20 l 7. Annual Environmental Operating Report Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. I &2. 83 pp. II I 2021 Annual Environmental Report Energy Harbor, BVPS I I I I

FENOC, 2018. Annual Environmental Operating Report Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. 1&2. 26 pp. I

FENOC, 2019. Annual Environmental Operating Repo11 Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. I &2. 26 pp. I Energy Harbor, 2020. Annual Environmental Operating Report Non-radiological. First Energy Operating Company, Beaver Valley Power Station, Unit No. 1&2. 26 pp. Energy Harbor, 2021. Annual Environmental Operating Report Non-radiological. First Energy I

Operating Company, Beaver Valley Power Station, Unit No. 1&2. 26 pp

NRC, IE Bulletin 81-03: Flow Blockage of Cooling Tower to Safety System Components by I Corbicu!ct sp. (Asiatic Clam) and Mytilus sp. (Mussel). I I I I I I I I I I

12 2021 Annual Environmental Report I Energy Harbor, BVPS I I I I I I I 8.0 I TABLES I I I I I I I I I I I I I I I

8.0 TABLES I TABLE 5.1

BEAVER VALLEY POWER STATION (BVPS) I SAMPLING DATES FOR 2021

Study Jan Feb Mar Aor [\\,Jay Jun Jul Aug Seo Oct Nov Dec I Bcnthic Macroinvertt:bra te*

Fish*

'),

I Corhirnla a nd Zebra Musse l 9 26 16 15 13 _J 22

'),

Zebra Musse l Veliger 9 26 16 15 13 _J 22 I

• No t sched ul ed in 2021 I TABLE 5.2

UNIT 1 COOLING RESERVOIR MONTHLY SAMPLING I CO RBICULA DENSITY DAT A FOR 2021 FROM BVPS I Area Live Maximum Minimum Estimated

Colle ction Sampled or Length Length Number Date (SQ ft) Dead Count Range (mm) Range(mm) (per SQ m) I 0 --- --- 0 4/9/2021 0.25 Dead Live 0 --- --- 0 5 /26/2021 0.25 Dead 0 -- - --- 0 I Live 0 --- --- 0

6/16/2021 0.25 Dead 2 4.75-6.29 3.35-4. 74 86 Live 3 6.30-9.94 4.75-6.29 129 I 7/15/2021 0.25 Dead 0 --- --- 0 Live 0 --- - - - 0 8/13/2021 0.25 Dead I 4.75-6.29 4.75-6. 29 43 I Live 2 J.35-4.74 J.35 -4.74 86 9/23/2021 0.25 Dead 0 --- --- 0 Live 0 --- -- - 0 I I 0/22/2021 0.25 Dead I 4.75-6.29 4.75-6.29 43 Live 2 4.75-6.29 3.35-4. 74 86 Unit Dead 4 4.75-6.29 3.35-4.74 25=71 I sum mar y Live 7 6.30-9. 94 3.35-4.74 43

13 I 2021 Annu al Environmental Report Energy Harbor, BVPS I I I I

TABLE 5.3 I UNIT 2 COOLING RESERVOIR MONTHLY SAMPLING CORBICULA DENSITY DATA FOR 2021 FROM BVPS I

Area Maximum Minimum Estimated Co llection Sa mpled Live or Length Length Nu mber Date (sq ft) Dead Count Range (mm) Range(mm) (per sq m) I 4/9 /2021 0.25 Dead 2 >9.50 2.00 -3.34 86 Live 8 6.30-9.94, 6.30-9. 94 3.35-4. 74 344

.) 4.75-6.29 129 I 5/26 /202 1 0.25 Dead Liv e 7 6.30 -9.94 6.30-9.94 301

6/16/2021 0.25 Dead 0 ------ 0 Liv e I 6.30-9.94 6.30-9.94 43 I 7/15 /2021 0.2 5 Dead 2 4.75-6.29 4. 75 -6.29 86 Live 5 >9.50 4.75-6.29 215 8/13/2021 0.25 Dead 4 6.30-9.94 4.75-6.29 172 I Live 6 6.30-9.94 2.00 -3.34 258 9/23 /2021 0.25 Dead I 6.30-9.94 6.30-9.94 43 Live 2 6.30-9.94 6.30-9.94 86 I 0/22 /2021

• 0.25 Dead --- - - ---- --- I Live --- ------ - - -

Unit Dead 12 >9.50 2.00-3.34 86 summary Live 29 >9.50 2.00-3.34 208 I

• Not sa mpl ed in October due to outage I

I I I I I

14 202 1 Annua l Environmenta l Report I Ene rgy Harb o r, BVPS I I I I I I 9.0 I I FIGURES I I I I I I I I I I I I I I I

9.0 FIGURES I Fig ure 5.1 Location of st ud y area: Beaver Valley Power Sta tion (BVPS), Shippingport, PA

-; 1rv1, 1~,.., Cleveland 0 ~twrial r ore.s I ~ ¢,

Ak ro n - 0 'Q ij

Can ton Beaver Val ley 0 I w Powe r S1a1 1on Pittsburgh 0 11 *:r s :*,.y O H e r'3 m sburgc ~ I Jlumbus ~ ~ ijj LJnc 0.~., n1> c;*,1 h,,.

Mo rg a"ntowr MARYLt, ~JC,

. If~ t"/" I ' P"tr'<~"-t.1 lf 'J ~

Midland Sh1pp1ngpon I W E - i Mono,, ~,!J.t._,,:,

~un! 1n 9to n Nationa

0 Charles:cno V RGINI I Beaver Valley Power Sta tion I I I I I I I

15 I 202 1 Annual Environm e nt a l Report Energy Harbor, BVPS I I I I

Comparison of live Corbicula clam density estimates among 2021 BVPS Unit 1 cooling tower reservoir events, for various clam shell groups. I I

500 I a: 450 w tu 400 ffi 350 Q. 300 I 250 I I u. 200 -* 0 150

~

c,: ~ '"' w.. ., 100 ,. c::, c::, c::,.t:::=7.c::, ~ ::"I':. --:.. I

, SIZE RANGE z 50==

,t;;;;;;?.&;:;1' ff.c:7.&:7 ~ ~ ~ ~ 0 -------. 419 5126 6116 7115 8113 9123 10122 m 0.01-0.99 mm 0 0 0 0 0 0 0 I

1. 00-1. 99mm 0 0 0 0 0 0 0 02 00-3. 34 mm 0 0 0 0 0 0 0 3. 35 - 4.74 mm 0 0 0 0 86 0 43 114. 75-6. 29 mm 0 0 86 0 0 0 43 I a 6. 30- 9. 49 mm 0 0 43 0 0 0 0 Figure 5.2 o >9.50mm 0 0 0 0 0 0 0 TOTAL #hn2 0 0 129 0 86 0 86 I I i

I I I

16 2021 Annua l Env ironmental Report I Energy Harbor, BVPS I I I I

Comparison of live Corbicula clam density estimates am ong 2021 BVPS Unit 2 cooling I towe r reservoir e v ents, for various clam shell groups. I

~
~

I !:11 500 Cl: w

a. 450

5 400

J Sl 350 I Ill Cl:

0 300 u u.. 250 0 Cl: 200 I w.r:::,

~ 150,,t;;;;7

J z 100.&;;7,&::7 - -

50.iC:P ~ &:::I'

= &:I',c=:,

I 0 4,9 5126 6116 7115 11113 9123 10122*

i10.0l.()99mm a a a a a a 0 a t00-t99mm a a a a 0 0 D 200-J JJmm a 0 86 0 0 o 3.35-4.74mm JJ 0 0 43 0 0 I a4 75-6.29mm 172 0 43 86 0 0 l!J6.30--9.49 mm 129 JOI 43 129 43 llo 0 a ->9.50mm 0 43 0 0 TOTAL !Mn2 JJJ 301 JJ 215 258 86 0 F igure 5.3 I

• Not Sampled in October due to outage I

I I I I I

17 I 2021 Annual Env ironment a l Report Energy Harbor, BVPS I 1- - I I

Comparison of live Corbicula clam density estimates among 2021 BVPS Intake Structure sample events, for various clam shell groups. I I I u.. I 0 a:: w

~

z I

SIZE RANGE

7115 9127 I 110.01-0.99 mm 0 0 0 1. 00-1.99 mm 0 0 0 02.00-3 34 mm 0 0 0 03.3:,-4.74 mm 0 0 0 I 4. 75-6. 29 mm 1 0 2 Intake structure bottom samples are GJ6 30-9.49 mm 2 1 1 Building collected from the Ohio River at the Intake

11>9.50mm 0 0

TOTAL 4 3 I

Figure 5.4 I I I I I I I

18 2021 Annual Environmental Report I Energy Harbor, BVPS I I I I

Water Temperature and River Elevation Recorded at the Ohio River at BVPS I Intake Structure During 2021 on Monthly Sample Dates.

90 ~--------------------------~ 676 I

80 674 I

70 672

~ >J
~ <

I :, ~ m i, 60 670 < i !!t {! 0 .!! ~ I i 50 668 I 40 666

--- temp I -- elevation 30 664 4/9 5/26 6 /16 7/15 8/13 9/23 10/22

2021 Monthly Sample Date I I

Figure 5.5 I I I I I

19 I 2021 Annua l Environmental Report Energy Harbor, BVPS I I I I

6000,-------- - -----------------~ I

5000 -+----------------j I

4000 +-------; I

S 3000 +----

ti: I

2000 +---- I

1000 I

0 L"nit 2 Coolin g To wer Intake Structure--Open Water Coit I Cooling To wer Reservoir Reservoir* I

El 4.9 0 0 0 D 51'.!6 0 390 320

6, 16 520 20 180 II 7, 15 2960 210 270 I

CD g : 13 5180 :!90 560 IJ 9,23 0 0 0

10*22 0 0 0 I

Sample location I I Figure 5.6. Density of zebra mussel veligers collected at Beaver Valley Power Station, 2021.

• Unit 2 Cooling Water Reservoir not sampled in October due to outage.

I I I

20 202 1 Annual Env ironmenta l Report I Energy Harbor, BV PS I I I I I 9000

~

8000 t-- I 7000 t--

6000 t-- I .., 5000 t--s ~

ti: 4000 t--

I --

3000 t-- I 2000 -t-- I 1000 t-- L~ :h ti~

0 -Barge Slip Impact Basin Emergency Outfall* I 0 4/9 0 0 0 o 5/26 8367 4500 2947 D 6/16 1050 120 280 I 11 7/15 120 1570 940 D 8/13 1160 830 1840 II 9/23 260 140 100

10/22 0 0 0 I

Sample location I I Figure 5.7. Density of zebra mussel veligers collected at Beaver Valley Power Station, 2021.

• Emergency Outfall not sampled in October due to open grate.

I I I

21 I 2021 Annual Environmental Report Energy Harbor, BVPS I I I I I

3 0 I

~

I 2.0 I I 1.0 I

0.0 Intake Structure / I Open Unit l Cooling Tower Unit 2 Cooling To,ver Water Reser,;oir Reservoir* g ra 4/9 0.0 0.0 0.0 I

5126 0.4 0.0 0.0 D 6/16 0.0 0.0 0.0 Cll 7/15 0.0 0.0 0.0 I D 8/13 0.0 0.0 0.0 OJ 9/23 0.0 0.0 0.0 OJ 10/22 2.7 0.0 0.0 I ll I I Figure 5.8. Density of settled zebra mussels at Beaver Valley Power Station, 2021.

• Unit 2 Cooling Water Reservoir not sampled in October due to outage. I I

22 2021 Annual En vironmental Rep o rt I Ener gy Harbor, BVPS I I I I I 10.00 I I 5 5.00 I ~ I I

0.00 Barge Slip* Impact Basin Emergency Outfall** I t:il D 4 /9 2.69 0.00 0.00 D 5/26 7.62 0.00 0.00 IJ 6 /16 1.35 0.00 0.00 I Ill 7/15 6.73 0.00 0.00

IJ 8/13 0.00 0.00 0.00

9 1 23 0.00 0.00 0.00 I [] 10/22 8.52 0.00 0.00 a I I Figure 5.9. Density of settled zebra mussels at Beaver Valley Power Station, 2021.

• Barge Slip not sampled in April due to un sa fe conditions.

I ** Emergency Outfall not sampled in October due to open grate. I I

23 I 2021 Annua l Environmental Report Energy Harbor, BVPS I I I I I I 10.0 I I PERMITS I I I I I I I I I I I I I I I I I 10.0 PERMITS I Attachment 10.1 BEAVER VALLEY POWER STATION (BVPS) PERMITS AND CERTIFICATES FOR ENVIRONMENT AL COMPLIANCE I Registration Regulator/Description Number Expiration I BVPS EPA generator identification Resource Conservation & Recovery P AR000040485 Act (RCRA) [dentiftcation number for regulated waste activity. Also used by PA DEP to monitor regulated waste activity under the Pennsylvania Indefinite Solid Waste Management Act (SWMA) I 04-02474 BVPS EPA Facility Identification Number for CERCLA/EPCRA/SARA. Indefinite Used for SARA Tier II reporting and emergency planning. FE Long Term Distribution Center/Warehouse (22) EPA Facility I 04-02475 Identification Number for CERCLA/EPCRA/SARA. Used for Sara Tier II Indefinite reporting and emergency planning.

PA00256l5 BVPS NPDES Permit Number under US EPA and PA DEP. I 0/31/2026 I

04-13281 BVPS Unit I PA DEP Facility Identification & certification number for regulated storage tanks. Indefinite I 04-13361 BVPS Unit 2 PA DEP Facility Identification & certification number for regulated storage tanks. Indefinite PA DEP State Only Synthetic Minor Permit for emergency auxiliary OP-04-00086 boilers, emergency diesel generators, paint shop and other miscellaneous 6/12/2025 I sources. NIA PA DEP Open Burning Permit for operation of the BVPS Fire School -II 11202 I annual application and renewal. Did not renew I 050421550022D US Department ofTranspmtation Hazardous Materials Registration. 6/30/2022 US Army Permit for maintenance dredging (with I 2/3 1/202 I-Renewal 2001-242 Encroachment/Submerged Lands Agreement #0477705, this allows application submitted maintenance dredging). awaiting approval Encroachment Permit/Submerged Lands Agreement for construction and 477705 maintenance of current barge slip (with US Army Permit #2000 I 00242, Indefinite this allows maintenance dredging). I 06786A Encroachment Permit/Submerged Lands Agreement for transmission line over Ohio River at Mile 34.5. Indefinite

18737 Encroachment Permit/Submerged Lands Agreement for Unit I intake and discharge (main combined intake and outfall structures). Indefinite I 47571 I Encroachment Permit/Submerged Lands Agreement for construction and maintenance of Unit 2 auxiliary line. Indefinite I 24 202 I Annual Environmental Report Energy Harbor, BVPS I I I I

Attachment 10.2 I Updated NPDES Permit I I I I I I I I I I I I I

25 I 2021 Annual Environmental Report Energy Harbor, BVPS I

I I I 3800-PM-BCW0011 Rev. 2/2020 COMMONW EALTH OF PENNSYLVANIA Permit DEPARTMENT OF ENVIRONMENTAL PROTECTIO N pennsylvania BUREAU OF CLEAN WATER t:iiiJ DEPARTMENT OF ENVIRONMENTAL

'11/8 PROTimON I AUTHORIZATION TO DISCHARGE UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM I DISCHARGE REQUIREMENTS FOR INDUSTRIA L WASTEWATER FACILITIES I NPDES PERMIT NO: PA0025615

In compliance with the provisions of the Clean Water Act, 33 U.S.C. Section 1251 et seq. (" the Act") and Pennsylvania's I Clean Streams Law, as amended, 35 P S Section 691.1 et seq.,

Energy Harbor Nuclear Corp. 168 East Market Street I Akron, OH 44308

is authorized to discharge from a facility known as Beaver Valley Power Station, located in Shippingport Borough, Beaver County, to Peggs Run (WWF) and the Ohio River (WWF) in Watershed(s) 20-8 and 20-D in accordance I with effluent limitations, monitoring requirements and other conditions set forth in Parts A, Band C hereof.

THIS PERMIT SHALL BECOME EFFECTIVE ON NOVEMBER 1, 202 I THIS PERMIT SHALL EXPIRE AT MIDNIGHT ON OCTOB ER 31, 2026

The authority granted by this permit is subject to the following further qualifications: I 1. If there is a conflict between the application, its supporting documents and/or amendments and the terms and conditions of this permit, the terms and conditions shall apply. I 2. Failure to comply with the terms, conditions or effluent limitations of this permit is grounds for enforcement action; for permit termination, revocation and reissuance, or modification ; or for denial of a permit renewal application. (40 CFR 122.41 (a)) I 3. A complete application for renewal of this permit, or notice of intent to cease discharg ing by the expiration date, must be submitted to DEP at least 180 days prior to the above expiration date (unless permission has been granted by DEP for subm ission at a later dale), using the appropriate NPDES permit application form. (40 CFR 122.41(b), 122.21 ( d)(2)) I In the event that a timely and complete application for renewal has been submitted and DEP is unable, through no fault of the permittee, to reissue the permit before the above expiration date, the terms and conditions of this permit, including submission of the Discharge Monitoring Reports (DMRs), will be automatically continued and will remain I fully effective and enforceable against the discharger until DEP takes final action on the pending permit application. (25 Pa. Code§§ 92a.7 (b), (c))

4. This NPD ES permit does not constitute authorization to construct or make modifications to wastewater treatment I facilities necessary to meet the terms and conditions of this permit.

DATE PERMIT ISSUED September 30, 2021 ISSUED BY I Christopher Kriley, P.E. Environmental Program Manager Southwest Regional Office I I I I I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615

PART A. EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I. A. For Internal Monitoring Point __lQ!..._ I

Receiving Waters : Ohio River (WWF) through Outfall 001 or Outfall 003 Pl

Unit #1 chemical waste sump receiving wastewater from lab sink drains, secondary system process analyzer drains, container rinse I water, condensate and steam generator drains ; Unit #1 wa ter treating chemical storage area floor drains, elementary neutralization Type of Effluent: and air compressor condensation; Unit #2 steam generator drain and fill water

The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitoring Requirements Parameter Mass Units lbs/dav) <11 Concentrations (ma/U Minimum 1' 1 Required I Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthlv Maximum Maximum Frequency Type

Flow(MGD) Report Reoort XXX XXX XXX XXX 1/week Estimate pH (SU.) XXX XXX 6.0 XXX XXX 9.0 1/week Grab I

Total Suspended Solids XXX XXX XXX 30.0 1000 XXX 1/week Grab

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 1/week Grab Ammonia-Nitroaen 151 XXX XXX XXX Report Report XXX 1/week Grab I

Hvdrazine 151 XXX XXX XXX Report Report XXX 1/week Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s) : I

at Internal Monitoring Point 101 131 I I 2 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A* EFFLUENT LIMITATIPNS, MONITORING, RECORDKEEPJNG AND REPORTING REQUIREMENTS I I. B. For Internal Monitoring Point _lQ!__

Receiving Waters: Ohio River (WWF) through Outfall 001 I Type of Effluent: Unit #2 auxiliary boiler blowdown (normally discharged to the Unit #2 cooling tower basin and recycled)

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31 1 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorinq Rec uirements 11 Concentrations (mci/Ll Minimum 121 Required Parameter Mass Units lbs/davl 1Average Daily Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Frequencv Tvpe

Flow(MGD) Report Report XXX XXX XXX XXX 1/week Estimate

Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX 2/month Grab I Oil and Grease XXX XXX XXX 15.0 20.0 XXX 2/month Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Internal Monitoring Point 301 I I

I 3 I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A* EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I. C. For Internal Monitoring Point _iQ_:!__ I

Receiving Waters: Ohio River (WWF} through Outfall 001

Type of Effluent: Unit #2 auxiliary boiler chemical feed sump receiving wastewater from auxiliary boiler drains, auxiliary steam header condensation I

1. The permittee is authorized to discharge during the period from November 11 2021 through October 31. 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorinu Re rnirements 11 Concentrations (mci/Ll MinimumI 2I Required Parameter Mass Units (lbs/davl 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthlv Maximum Maximum Freuuencv Tvoe I

Flow(MGD) Report Report XXX XXX XXX XXX 1/week Estimate

pH (S.U.) XXX XXX 6.0 XXX XXX XXX 2/month Grab

Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX 2/month Grab I

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 2/month Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): at Internal Monitoring Point 401 I I I I 4 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I PART A-EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS

I. D. For Internal Monitoring Point ~

Receiving Waters: Ohio River (WWF) through Outfall 001 or, alternatively, the Ohio River through Outfall 003 to be monitored at IMP 103 or IMP 403 I Type of Effluent: Unit #2 chemical waste sump

1. The permittee is authorized to discharge during the period from November 1. 2021 through October 31, 2026.

I 2. Based on the anticipated wastewater characteristics and fiows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Reauirements 1> Concentrations fmq/L) Minimum 12> Required Parameter Mass Units (lbs/davl 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Freauencv Tvoe

Flow(MGDl Report Report XXX XXX XXX XXX 1/week Estimate

PH rs.u.1 XXX XXX 6.0 XXX XXX 9.0 1/week Grab I Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX 1/week Grab

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 1/week Grab Ammonia-Nitroqen 15> XXX XXX XXX Report Report XXX 1/week Grab I Hydrazine 15> XXX XXX XXX RePort Report XXX 1/week Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I at Internal Monitoring Point 60117> I I

5 I I I I I I I I I I

3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615

PART A. EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I

I. E. For Internal Monitoring Point _lQ_!__

Receiving Waters: Ohio River (WVVF) through Outfall 001 or, alternatively, the Ohio River through Outfall 003 to be monitored at IMP 103 or IMP 403

Secondary plant process water, Unit #2 main plant and equipment drainage (no floor contact, Unit #2 recirculating water system I Type of Effluent: vacuum priming drainage, and low volume waste sources from the Unit#2 chemical waste sump (IMP 601)

1. The permittee is authorized to discharge during the period from November 1. 2021 through October 31. 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorinci Re uirements Parameter Mass Units lbs/davl <11 Concentrations !mci/Ll Minimum <21 Required I Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Freciuencv Tvpe

Flow(MGDl Reoort Reoort XXX XXX XXX XXX 1/week Estimate

oH (S.U.l XXX XXX 6.0 XXX XXX 9.0 1/week Grab

Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX 1/week Grab

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 1/week Grab Ammonia-Nitroqen c51 XXX XXX XXX Report Report XXX 1/week Grab I

Hydrazine c51 XXX XXX XXX Report Report XXX 1/week Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I at Internal Monitoring Point 701 c71 I I

6 I I I I I I I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPJNG AND REPORTING REQl)IREMENT~ I I. F. For Outfall __Q_Q__1__, Latitude 40° 37' 16.00", Longitude -80° 26' 17.00", River Mile Index 945. 7, Stream Code 32317

Receiving Waters: Ohio River WWF I Type of Effluent: Unit #1 and Unit #2 cooling tower blowdown; sources monitored at I MPs 101, 301, 401, 601, and 701; and treated radioactive waste

1. The permittee is authorized to discharge during the period from November 1 1 2021 through October 31, 2023.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Reauirements 11 Concentrations (ma/L) Minimum 121 Required Parameter Mass Units (lbs/day) 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthly Maximum Minimum Monthly Maximum Maximum Freauency Type

Flow(MGD) Report Report XXX XXX XXX XXX Continuous Measured

pH (S.U.) XXX XXX 6.0 XXX XXX 9.0 1/week Grab I Total Residual Chlorine (TRC) XXX XXX XXX 0.5 XXX 1.25 1/week Grab

Free Available Chlorine XXX XXX XXX 0.2 0.5 XXX Continuous 1*1 Recorded

Temperature (°F) XXX XXX XXX XXX 110 XXX 1/day 1-S I Ammonia-Nitroaen 151 XXX XXX XXX Report Report XXX 1/week Grab

Aluminum, Total XXX XXX XXX Report Report XXX 2/month Grab 24-Hr I Chromium, Total 161 XXX XXX XXX 0.2 0.2 XXX 1/week Composite

Copper, Total XXX XXX XXX Reoort RePort XXX 2/month Grab

Iron, Total XXX XXX XXX Report Report XXX 2/month Grab I Mercurv, Total (ua/L) 181 XXX XXX XXX Report Report XXX 2/month Grab 24-Hr Zinc, Total <61 XXX XXX XXX 1.0 1.0 XXX 1/week Composite

Hydrazine 151 XXX XXX XXX 0.007 0.007 XXX 1/week Grab I

7 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

Outfall 001, Continued (from Permit Effective Date through October 31 1 2023) I Effluent Limitations MonitorinA Requirements Parameter Mass Units (lbs/day) !1l Concentrations (mg/L) Minimum c2> Required Average Daily Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthly Maximum Maximum Frequency Type 24-Hr I Nalco H 150M C9l XXX XXX XXX 0.034 0.034 XXX 1/week Composite

Phenolics, Total XXX XXX XXX Report Report XXX 2/month Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I

at Outfall 001 I I I I I I I

8 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I PART A-EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS

I. G. For Outfall _QQ1__, Latitude 40° 37' 16.00", Longitude -80° 26' 17.00", River Mile Index 945.7, Stream Code 32317

Receiving Waters: Ohio River WWF I Type of Effluent: Unit #1 and Unit #2 cooling tower blowdown; sources monitored at I MPs 101, 301, 401, 601, and 701; and treated radioactive waste

1. The permittee is authorized to discharge during the period from November 1. 2023 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Re mirements Parameter Mass Units (lbs/davl <1> Concentrations (ma/Ll Minimum 121 Required Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Freauencv Tvoe

Flow(MGDl Reoort Report XXX XXX XXX XXX Continuous Measured

pH (S.U.) XXX XXX 6.0 XXX XXX 9.0 1/week Grab I Total Residual Chlorine /TRCl XXX XXX XXX 0.5 XXX 1.25 1/week Grab

Free Available Chlorine XXX XXX XXX 0.2 0.5 XXX Continuous 14 1 Recorded I Temperature (° F) XXX XXX XXX XXX 110 XXX 1/day 1-S

Ammonia-Nitro~en <51 XXX XXX XXX Report Report XXX 1/week Grab

Aluminum, Total XXX XXX XXX Report Report XXX 2/month Grab 24-Hr I Chromium, Total 161 XXX XXX XXX 0.2 0.2 XXX 1/week Composite

Copper, Total XXX XXX XXX Report Report XXX 2/month Grab

Iron, Total XXX XXX XXX Report Report XXX 2/month Grab I Mercury, Total (ua/L) 18> XXX XXX XXX 0.012 0.019 XXX 2/month Grab 24-Hr Zinc, Total 16! XXX XXX XXX 1.0 1.0 XXX 1/week Composite

Hvdrazine <51 XXX XXX XXX 0.007 0.007 XXX 1/week Grab I

9 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

Outfall 001, Continued (from November 1, 2023 through October 31, 2026) I Effluent Limitations Monitorini:1 Rec uirements 11 Concentrations (mg/L) Minimum 12> Required Parameter Mass Units (lbs/day) 1Average Daily Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Freauencv Type 24-Hr I Nalco H 150M 191 XXX XXX XXX 0.034 0.034 XXX 1/week Composite

Phenolii:s, Total XXX XXX XXX Report Report XXX 2/month Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 001 I I I

I I

10 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I PART A-EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING-AND REPORTING REQUIREMENTS

I. H. For Internal Monitoring Point 102

Receiving Waters: Ohio River (WWF) through Outfall 002 I Type of Effluent: Intake cubicle sumps (pump bearing cooling water leakage)

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effuent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations MonitorinCl Re uirements 11 Concentrations fm<1/Ll Minimuml 2l Required Parameter Mass Units Clbs/davl 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Freauencv Tvoe

Flow!MGDl Reoort Reoort XXX XXX XXX XXX 2/month Estimate

oH !S.U.l XXX XXX 6.0 XXX XXX 9.0 2/month Grab I Total Susoended Solids XXX XXX XXX 30.0 100.0 XXX 2/month Grab

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 2/month Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Internal Monitoring Point 102 I I I

11 I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A-EFFLUENT LIMITATIONS, MONITORING,.RECORDKEEPING AND REPORTING REQUIREMENTS I I. I. For Outfall....QQL_, Latitude 40° 37' 27.00", Longitude -80° 26' 5.00", River Mile Index 945.9, Stream Code 32317

Receiving Waters: Ohio River WI/VF

Type of Effluent: Intake screen backwash water and sources monitored at IMP 102 I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorinq Requirements 11 Concentrations (mq/L) Minimum 121 Required Parameter Mass Units {lbs/davl 1Average Daily Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Fre<1uencv Tvoe I

Flow/MGDl Report Report XXX XXX XXX XXX 1/week Estimate

Debris collected on the intake trash racks shall not be returned to the waterway. Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I

at Outfall 002 I I I I

12 I I I I I I I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I I. J. For Internal Monitoring Point 103

Receiving Waters: Ohio River (VVWF) through Outfall 003 I Clarifier settling basin overflow having sources monitored at IMP 701 and low volume waste from Unit 2 alternatively monitored at Type of Effluent: IMP 601 and IMP 701.

1. The permillee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

I 2. Based on the anticipated wastewater characteristics and fiows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Re rnirements 1 l Concentrations fma/Ll Minimum< 2l Required I Parameter Mass Units (lbs/day) <Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthlv Maximum Maximum Freauencv Tvoe

Flow(MGD) Report Report XXX XXX XXX XXX 2/month Estimate I oH (S.U.) XXX XXX 6.0 XXX XXX 9.0 2/month Grab

Total Susoended Solids XXX XXX XXX 30.0 100.0 XXX 2/month (10)

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 2/month Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Internal Monitoring Point 103 I I I

13 I I I I I I I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615

PART~ - EFFLUENT LIMITATIONS; MONITORING, RECOROKEEPING AND.REPORT_!NGREQUiREMENTS

I. K. For Internal Monitoring Point..lQL__

Receiving Waters: Ohio River (WWF) through Outfall 003

Type of Effluent: Unit #1 main plant floor and equipment drains treated by an oil/water separator (OWS #303) I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorina Re Juirements Parameter Mass Units (lbs/day) <11 Concentrations Ima/LI Minimum< 21 Required Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthlv Maximum Maximum Freauencv Tvoe I

Flow(MGD) Report Reoort XXX XXX XXX XXX 1/week Estimate

oH !S.U.l XXX XXX 6.0 XXX XXX 9.0 2/month Grab

Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX 2/month Grab I

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 2/month Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I at Internal Monitoring Point 303 I I I 14 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPJNG AND REPORTING REQUIREMENTS I I. L. For Internal Monitoring Point ~

Receiving Waters: Ohio River (WWF) through Outfall 003 I Unit #1 SW Circ Pit receiving wastewater from equipment drains and intermittent discharges of condensate blowdown discharged Type of Effluent: through MH 1834; may also include low volume wastewater from Unit 2 alternatively monitored at IMP 601 and IMP 701

1. The perrnittee is authorized to discharge during the period from November 1, 2021 through October 31. 2026.

I 2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorinq Re rnirements Parameter Mass Units llbs/davl <11 Concentrations (ma/Ll Minimuml 2> Required I Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Frequencv Tvne Weekly when Flow(MGDl Report Report XXX XXX XXX XXX Discharqina Estimate Weekly when I pH (S.U.) XXX XXX 6.0 XXX XXX 9.0 Discharqin,i Grab Weekly when Total Residual Chlorine (TRC) XXX XXX XXX 0.5 XXX 1.25 Discharaina Grab Weekly when Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX Discharaina Grab I Weekly when Oil and Grease XXX XXX XXX 15.0 20.0 XXX Discharqin,i Grab Weekly when Ammonia-Nitroqen 151 XXX XXX XXX Report Report XXX Discharaina Grab Weekly when I Chromium, Total 161 XXX XXX XXX 0.2 0.2 XXX Discharqina Grab Weekly when Zinc, Total 151 XXX XXX XXX 1.0 1.0 XXX Discharqina Grab Weekly when Hydrazine <51 XXX XXX XXX 0.007 0.007 XXX Discharqin,i Grab I Weekly when Nalco H150M 191 XXX XXX XXX 0.034 0.034 XXX Discharqinq Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I at Internal Monitoring Point 403

15 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I. M. For Outfall ~. Latitude 40° 37' 27.00", Longitude -80° 26' 6.00", River Mile Index 946.0, Stream Code 32317 I

Receiving Waters: Ohio River WWF

Storm water runoff; sources monitored at I MPs 103, 303, and 403; and intermittent non-contact cooling water leakage/drainage from I Type of Effluent: the Unit #1 Diesel Generator

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31. 2023.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Rec uirements 11 Concentrations (ma/Ll Minimuml'I Required Parameter Mass Units (lbs/dav) 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthly Maximum Maximum FreauencY Type I

Flow(MGD) Report Report XXX XXX XXX XXX 2/month Estimate

pH (S.U.)< 11 1 XXX XXX XXX XXX Report XXX 1/6 months Grab I Total Suspended Solids 111 1 XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Oil and Grease 111 1 XXX XXX XXX XXX Report XXX 1/6 months Grab

Ammonia-Nitroaen 151 XXX XXX XXX Report Report XXX 1/week Grab I 24-Hr Aluminum, Total XXX XXX XXX Reoort Reoort XXX 2/month Comoosite

Iron, Tota11 11 1 XXX XXX XXX XXX Report XXX 1/6 months Grab Mercurv, Total (uq/L) <81 XXX XXX XXX Report Report XXX 2/month Grab I

Hvdrazine <51 XXX XXX XXX 0.007 0.007 XXX 1/week Grab

Nalco H150M<91 XXX XXX XXX 0.034 0.034 XXX 1/week Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): ~a~t~O~u=tf~a~ll~0~03~<1_11 _______ _ I 16 I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I PART A-EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS

I. N. For Outfall ~. Latitude 40' 37' 27.00", Longitude -80" 26' 6. 00", River Mile Index 946.0, Stream Code 32317

Receiving Waters: Ohio River WWF I Storm water runoff; sources monitored at I MPs 103, 303, and 403; and intermittent non-contact cooling water leakage/drainage from Type of Effluent: the Unit #1 Diesel Generator

1. The permittee is authorized to discharge during the period from November 1, 2023 through October 31, 2026.

I 2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorinq Re rnirements 11 Concentrations (mq/Ll Minimum <21 Required I Parameter Mass Units llbs/davl <Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Frequencv Tvoe

Flow(MGD) Reoort Reoort XXX XXX XXX XXX 2/month Estimate I oH (S.U.)< 11 1 XXX XXX XXX XXX Reoort XXX 1/6 months Grab Total Suspended Solids 111 1 XXX XXX XXX XXX Report XXX 1/6 months Grab

Oil and Grease <11 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab I Ammonia-Nitroqen 15> XXX XXX XXX Report Report XXX 1/week Grab 24-Hr Aluminum, Total XXX XXX XXX Report Report XXX 2/month Composite

Iron, Total 111 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab I Mercury, Total (uq/L) !Bl XXX XXX XXX 0.012 0.019 XXX 2/month Grab

Hvdrazine l5l XXX XXX XXX 0.007 0.007 XXX 1/week Grab I Nalco H150M 19> XXX XXX XXX 0.034 0.034 XXX 1/week Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): ~a~t =O=u=tf=a~II =0=03~11_1> _______ _ I

17 I I I I I I I I I I 3800-PM-BCW0011 Rev, 212020 Permit Permit No. PA0025615

PART A - EFFLUE-NT LIMITATIONS, MONITORING, RECORDKEEPJNG AND REPORTING REQUIREMENTS I

I. 0. For Outfall ~, Latitude 40" 37' 30.00", Longitude -80' 26' 1.00", River Mile Index 946.3, Stream Code 32317

Receiving Waters: Ohio River WWF

Type of Effluent: Unit #1 cooling tower basin overflow I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations MonitorinQ Re uirements 2> Required Parameter Mass Units (lbs/davl 11> Concentrations (mQ/Ll Minimum 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum FreQuencv Tvae I

Flow <MG l Report Report XXX XXX XXX XXX 1/week Calculation

PH (S.U.l XXX XXX 6.0 XXX XXX 9.0 1/week Grab Total Residual Chlorine ITRCl XXX XXX XXX 0.5 XXX 1.25 1/week Grab I

Free Available Chlorine XXX XXX XXX 0.2 0.5 XXX 1/week Grab

Temperature ('Fl XXX XXX XXX XXX 110 XXX 1/day 1-S I Aluminum, Total XXX XXX XXX Report Report XXX 2/month Grab 24-Hr Chromium, Totall6l XXX XXX XXX 0.2 0,2 XXX 1/week Comaosite

Copper, Total XXX XXX XXX Report Report XXX 2/month Grab I

Mercurv, Total rua/Ll 18> XXX XXX XXX XXX Report XXX 1/quarter Grab 24-Hr Zinc, Total 16> XXX XXX XXX 1.0 1.0 XXX 1/week Comoosite

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): _,a,,_t_,,O"'u"'tf"'a'-'-11-"'0-"04..,_ _______ _ I I

18 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I PART A. EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS

I. P. For Outfall ~. Latitude 40° 37' 37.00", Longitude -80° 25' 45.00", River Mile Index 946.6, Stream Code 32317

Receiving Waters: Ohio River WWF I Type of Effluent: Auxiliary intake screen backwash water

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations MonitorinCI Re uirements Parameter Mass Units Clbs/davl <1> Concentrations (m<1/L) Minimum1 2l Required Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Freouencv Tvpe

Flow/MGD) Report Report XXX XXX XXX XXX 1/week Estimate

Debris collected on the intake trash racks shall not be returned to the waterway_ I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 006 I I I I

19 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A-EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQ\\JIREMENTS I I. Q. For Outfall....QQZ___, Latitude 40° 37' 37.00", Longitude -80° 25' 44.00", River Mile Index 946.5, Stream Code 32317

Receiving Waters: Ohio River WWF

Type of Effluent: Auxiliary intake testing water and infrequent discharges of cooling water from the Unit #1 heat exchangers and chillers I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorinq Requirements 1> Concentrations (ma/Ll Minimum1 2> Required Parameter Mass Units lbs/day) 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthly Maximum Maximum Frequency Type I

Flow (MGD) 112> Report Report XXX XXX XXX XXX 1/week Estimate

oH /S.U.)I 12> XXX XXX 6.0 XXX XXX 9.0 1/week Grab Total Residual Chlorine (TRC) 112) XXX XXX XXX XXX 0.20 XXX Grab during I 1/week Chlorination 12> XXX XXX XXX 0.2 0.5 XXX Grab during Free Available Chlorine 1 1/week Chlorination

Temoerature /°Fl <12> XXX XXX XXX XXX 110 XXX 1/dav I-S I Nalco H150M 19> 112> XXX XXX XXX 0.034 0.034 XXX 1/week Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 007 I I I

20 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS

I. R. For Internal Monitoring Point 108

Receiving Waters: Ohio River (WVVF) through Outfall 008 I Type of Effluent: River water removed from the Unit #1 cooling tower pumphouse sump

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitoring Requirements 1 > Concentrations (mg/L) Minimum I'> Required Parameter Mass Units (lbs/day) 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthly Maximum Minimum Monthly Maximum Maximum Frequency Type Weekly when Flow(MGD) Report Report XXX XXX XXX XXX Discharqinq Estimate Weekly when Total Residual Chlorine (TRC) XXX XXX XXX Reoort Reoort XXX Discharoino Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Internal Monitoring Point 108 I I I I

21 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUJREMENTS I. S. For Outfall ___QQ!!_, Latitude 40° 37' 30.00", Longitude -80° 26' 1. 00", River I Mile Index 946.36, Stream Code 32317

Receiving Waters: Ohio River WWF

Type of Effluent: Storm water and sources monitored at IMP 108 I

1. The permittee is authorized to discharge during the period from November 11 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitoring Re,iuirements 1> Concentrations (mQ/Ll Minimum 12> Required Parameter Mass Units (lbs/davl 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Frequencv Tvce I Flow (MGDI 111 > XXX Recor! XXX XXX XXX XXX 1/6 months Estimate

pH (S.U.)1 11 > XXX XXX XXX XXX Report XXX 1/6 months Grab Total Susoended Solids 111 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab I

Oil and Grease 111 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Iron, Total 111 > XXX XXX XXX XXX Report XXX 1/6 months Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 008 I I I

22 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS

I. T. For Outfall _Q_!Q__, Latitude 40° 37' 16.00", Longitude -80° 26' 21.00", River Mile Index 945.2, Stream Code 32317

Receiving Waters: Ohio River WWF I Type of Effluent: Once-through cooling water from the Unit #2 heat exchangers and chillers and Unit #2 service water strainer backwash

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Re rnirements 1> Concentrations (ma/Ll Minimuml'l Required Parameter Mass Units (lbs/day) 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthly Maximum Minimum Monthly Maximum Maximum Freauency Tvoe

Flow(MGD) Report Report XXX XXX XXX XXX 1/week Measured

PH /S.U.) XXX XXX 6.0 XXX XXX 9.0 1/week Grab I Grab during Total Residual Chlorine (TRC) XXX XXX XXX XXX 0.20 XXX 1/week Chlorination Grab during Free Available Chlorine XXX XXX XXX 0.2 0.5 XXX 1/week Chlorination I Temperature /°F) XXX XXX XXX XXX 110 XXX 1/dav 1-S

Mercurv, Total (uq/L) 18> XXX XXX XXX Report Report XXX 2/month Grab 24-Hr Nalco H 150M 19! XXX XXX XXX 0.034 0.034 XXX 1/week Composite I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 010 I

I I

23 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A

• EFFLUENT !,IMITATIONS, MONITORING, RECORDKEEPJNG AND REPORTING REQUIREi'.fENTS : I

I. U. For Internal Monitoring Point ---1:!.1__

Receiving Waters: Ohio River WWF

Type of Effluent: Unit #2 diesel generator and turbine building drains treated by an oil/water separator (OWS #22) I

1. The permittee is authorized to discharge during the period from November 11 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations MonitorinQ ReQuirements 11 Concentrations (m!'.1/L) Minimuml 2> Required Parameter Mass Units (lbs/day) 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthly Maximum Maximum FreQuency Type I*

Flow(MGD) Report Report XXX XXX XXX XXX 1/week Estimate

pH (S.U.) XXX XXX 6.0 XXX XXX 9.0 1/week Grab Total Susoended Solids XXX XXX XXX 30.0 100.0 XXX 1/week Grab I

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 1/week Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I

at Internal Monitoring Point 111 I I I

24 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONiTORING, RECORDKEEPING AND REPORTING REQUIREMENTS I I. V. For Internal Monitoring Point 211

Receiving Waters: Ohio River WWF I Type of Effluent: Unit #2 Turbine Building floor and equipment drains treated by the oil/water separator (OWS #23)

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anlicipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effiuenl limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitoring Rec uirements Parameter Mass Units /lbs/davl 111 Concentrations lma/Ll Minimum 121 Required Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Frequency Type

FlowlMGDl Reoort Reoort XXX XXX XXX XXX 1/week Estimate

pH IS.U.l XXX XXX 6.0 XXX XXX 9.0 1/week Grab I Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX 1/week Grab

Oil and Grease XXX XXX XXX 15.0 20.0 XXX 1/week Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I at Internal Monitorin Point 211 I I I

25 I I I I I I I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615

PART A* EFFLUENT Lll'/IITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I. W. For Outfall _0_1_1 __, Latitude 40° 37' 26.00", Longitude -80' 26' 5.00", River I Mile Index 946.2, Stream Code 32317

Receiving Waters: Ohio River WWF

Type of Effluent: Storm water, miscellaneous low volume waste sources, and sources monitored at I MPs 111 and 211 <13J I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2023.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorina Re uirements Parameter Mass Units lbs/davl <11 Concentrations (ma/Ll Minimum Required Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthlv Maximum Maximum Freauencv Tvce I

Flow(MGD) Reoort Reoort XXX XXX XXX XXX 1/week Estimate

pH (S.U.)I 11 I XXX XXX XXX XXX Report XXX 1/6 months Grab Total Susoended Solids 111 1 XXX XXX XXX XXX Reoort XXX 1/6 months Grab I

Oil and Grease 1111 XXX XXX XXX XXX Reoort XXX 1/6 months Grab Iron, Total 111 1 XXX XXX XXX XXX Report XXX 1/6 months Grab

61 XXX XXX XXX Report Reoort XXX I Mercurv, Total /ua/Ll 1 2/month Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 011 1131 I I I 26 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A* EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I I. X. For Outfall _0_1_1 __, Latitude 40' 37' 26.00", Longitude -80' 26' 5.00", River Mile Index 946.2, Stream Code 32317

Receiving Waters: Ohio River WWF I Type of Effluent: Storm water, miscellaneous low volume waste sources, and sources monitored at I MPs 111 and 211 113>

1. The permittee is authorized to discharge during the period from November 1, 2023 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effuent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Re< uirements 11 Concentrations (mg/L) Minimuml' 1 Required Parameter Mass Units (lbs/day) 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthly Maximum Maximum Frequency Type

Flow(MGDl Report Report XXX XXX XXX XXX 1/week Estimate

pH (S.U.)I 11 1 XXX XXX XXX XXX Report XXX 1/6 months Grab I Total Suspended Solids 111 > XXX XXX XXX XXX Report XXX 1/6 months Grab

Oil and Grease 111 > XXX XXX XXX XXX Report XXX 1/6 months Grab

Iron, Total 111 1 XXX XXX XXX XXX Reoort XXX 1/6 months Grab I Mercurv, Total (ua/Ll !81 XXX XXX XXX 0.012 0.019 XXX 2/month Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): I at Outfall 011 113> I I

27 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPlNG AND REPORTING REQUIREMENTS I

I. Y. For Outfall....Q.1L_, Latitude 40° 37' 24.20", Longitude -80° 25' 41.60", River Mile Index 0.28, Stream Code 33515

Receiving Waters: Peggs Run (\\/1/WF)

Type of Effluent: Slowdown from the HVAC unit serving the emergency response facility and storm water runoff I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorin!l Re mirements 11 Concentrations (ma/Ll Minimum1 21 Required Parameter Mass Units lbs/davl 1Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Frequency Type I

Flow(MGDl Reoort Reoort XXX XXX XXX XXX 2/month Estimate

oH (S.U.) XXX XXX 6.0 XXX XXX 9.0 2/month Grab Total Suspended Solids 111 1 XXX XXX XXX XXX Report XXX 1/6 months Grab I

Oil and Grease 111 1 XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Cadmium, Total XXX XXX XXX Report Report XXX 2/month Grab I

Copper, Total XXX XXX XXX Report Report XXX 2/month Grab Iron, Total 111 1 XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Zinc Total XXX XXX XXX Reoort Reoort XXX 2/month Grab I

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 012 I I

28 I I I I I I I I I I

3800-PM-BCW0011 Rev_ 212020 Permit Permit No. PA0025615 I PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPJNG AND REPORTING REQUIREMENTS

I. Z. For Internal Monitoring Point __l1l__

Receiving Waters: Ohio River WWF I Type of Effluent: Unit #2 turbine building floor and equipment drains treated by an oil/water separator (OWS #21)

1. The permittee is authorized to discharge during the period from November 1. 2021 through October 31. 2026.

2. Based on the anticipated wastewater characteristics and fiows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorin!l ReQuirements Parameter Mass Units (lbs/day) <11 Concentrations (m!J/L) Minimum< 21 Required Average Daily Instant. Average Daily Instant. Measurement Sample I Monthly Maximum Minimum Monthly Maximum Maximum Frequency Type

Flow(MGD) Report Report XXX XXX XXX XXX 1/week Estimate

oH /S.U.) XXX XXX 6.0 XXX XXX 9.0 1/week Grab I Total Suspended Solids XXX XXX XXX 30.0 100.0 XXX 1/week Grab

Oil and Grease XXX XXX XXX 15 20 XXX 1/week Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Internal Monitoring Point 313 I I I

29 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART /l. - EFFLUENT LIMITATIONS, MONITQRING, RECORDl:<EEPING AND REPORTING REQUIREMENTS I I. AA. For Outfall ~. Latitude 40° 37' 25.1 O", Longitude -80° 25' 47.10", River Mile Index _0~-~19~-* Stream Code 33515

Receiving Waters: Pe s Run WWF

Type of Effluent: Storm water and sources monitored at IMP 313 I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorina Re,rnirements Parameter Mass Units (lbs/davl <1> Concentrations lma/Ll Minimum< 2> Required Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthlv Maximum Maximum Freauencv Tvoe I

Flow(MGDl Reoort Reoort XXX XXX XXX XXX 2/month Estimate PH (S.U.) XXX XXX 6.0 XXX XXX 9.0 2/month Grab Total Suscended Solids <11 1 XXX XXX XXX XXX Recor! XXX 1/6 months Grab I

Oil and Grease <11 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Copper, Total XXX XXX XXX Report Report XXX 2/month Grab I Iron, Total <11 > XXX XXX XXX XXX Report XXX 1/6 months Grab

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 013 I I I

30 I I I I I I I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615 I PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS

I. BB. For Outfall...Q:!i__, Latitude 40° 37' 25.80", Longitude -80° 25' 47.20", River Mile Index 0.19, Stream Code 33515

Receiving Waters: Pe s Run WWF I Type of Effluent: Storm water

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and fiows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes)

Effluent Limitations Monitoring Re uirements 11 Concentrations (mq/Ll Minimum 121 Required Parameter Mass Units llbs/davl 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Freauency Tvce

Flow (MGD) 111 1 XXX Reoort XXX XXX XXX XXX 1/6 months Estimate

pH (S.U.)1 11 1 XXX XXX XXX XXX Report XXX 1/6 months Grab I Total Susoended Solids 111 1 XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Oil and Grease 1111 XXX XXX XXX XXX Report XXX 1/6 months Grab

Iron, Total 111 1 XXX XXX XXX XXX Report XXX 1/6 months Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 014 I I I

31 I I I I I I I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615

PART A - EFFLUENT LiMITATlONS, MONl"f"ORING, RECOROKEEPlNG AND REPORTING-REQUIREMENTS I I. CC. For Outfall ___QJ_L_, Latitude 40' 37' 23.90", Longitude -80° 25' 44.40", River Mile Index 0.24, Stream Code 33515

Receiving Waters: Peggs Run (WWF)

Type of Effluent: Storm water I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitorina Reouirements Parameter Mass Units lbs/davl <11 Concentrations (mQ/L) Minimum1 21 Required Average Daily Instant. Average Daily Instant. Measurement Sample Monthlv Maximum Minimum Monthtv Maximum Maximum Freauencv Tvoe I

Flow (MGDl 111 1 XXX Reoort XXX XXX XXX XXX 1/6 months Estimate

oH (S.U.)1 11 > XXX XXX XXX XXX Report XXX 1/6 months Grab Total Susoended Solids 111 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab I

Oil and Grease 111 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Iron, Total <11 > XXX XXX XXX XXX Report XXX 1/6 months Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 015 I I I

32 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A* EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I I. DD. For Outfall ____Q_:!_§__, Latitude 40' 37' 20.40", Longitude -80° 25' 40.80", River Mile Index 0.33, Stream Code 33515

Receiving Waters: Pe s Run WWF I Type of Effluent: Storm water

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorina Re rnirements 1! Concentrations {mq/L) Minimum1 2l Required Parameter Mass Units (lbs/dav) 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthlv Maximum Maximum Freauencv Tvoe Flow (MGD) 111 ! XXX Report XXX XXX XXX XXX 1/6 months Estimate

pH (S.U.)1 11 ! XXX XXX XXX XXX Report XXX 1/6 months Grab I Total Suspended Solids <11 l XXX XXX XXX XXX Report XXX 1/6 months Grab

Oil and Grease 111 ! XXX XXX XXX XXX Report XXX 1/6 months Grab

Iron, Total <11 l XXX XXX XXX XXX Report XXX 1/6 months Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 016 I I I

33 I I I I I I I I I I

3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A* EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I

I. EE. For Outfall....Q.:!l._, Latitude 40° 37' 18.50", Longitude -80° 25' 38.70", River Mile Index 0.40, Stream Code 33515

Receiving Waters: Peggs Run (WWF)

Type of Effluent: Storm water I

1. The permittee is authorized to discharge during the period from November 1, 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes). I

Effluent Limitations Monitoring Re uirements 11 Concentrations !mall) Minimum< 21 Required Parameter Mass Units lbs/day) <Average Daily Instant. Average Daily Instant. Measurement Sample Monthly Maximum Minimum Monthly Maximum Maximum Frequency Type I

Flow (MGD) <11 1 XXX Report XXX XXX XXX XXX 116 months Estimate

pH (S.U.)< 11 1 XXX XXX XXX XXX Report XXX 116 months Grab

11 > XXX XXX XXX XXX Report XXX I Total Suspended Solids < 116 months Grab

Oil and Grease <11 > XXX XXX XXX XXX Report XXX 116 months Grab

Iron, Total <11 > XXX XXX XXX XXX Report XXX 116 months Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 017 I I I

34 I I I I I I I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECOROKEEPING ANO REPORTJNG REQUIREMENTS I I. FF. For Outfall 019, Latitude 40° 37' 15.00", Longitude -80° 26' 20. 70", River Mile Index 945.3, Stream Code 32317

Receiving Waters: Ohio River WWF I Type of Effluent: Storm water

1. The permittee is authorized to discharge during the period from November 1. 2021 through October 31, 2026.

2. Based on the anticipated wastewater characteristics and flows described in the permit application and its supporting documents and/or amendments, the I following effluent limitations and monitoring requirements apply (see also Additional Requirements and Footnotes).

Effluent Limitations Monitorinq Requirements 1 1 Concentrations (ma/U Minimum 12> Required Parameter Mass Units (lbs/day) 1Average Daily Instant. Average Daily Instant. Measurement Sample I Monthlv Maximum Minimum Monthly Maximum Maximum Frequency Type

Flow (MGD) 111 > XXX Report XXX XXX XXX XXX 1/6 months Estimate

pH (S.U.)1 11 > XXX XXX XXX XXX Report XXX 1/6 months Grab I Total Suspended Solids 111 > XXX XXX XXX XXX Report XXX 1/6 months Grab

Oil and Grease 111 > XXX XXX XXX XXX Reoort XXX 1/6 months Grab

Iron, Total 111 > XXX XXX XXX XXX Report XXX 1/6 months Grab I Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s):

at Outfall 019 I I

35 I I I I I I

3800-PM-BCW0011 Rev. 2/2020 I Permit Permit No. PA0025615

PART A~* EFFi.JJE-Nt LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTiNG REQUIREMENTS (Continued) * * * * -I

Additional Requirements

The permittee may not discharge: I

1. Floating solids, scum, sheen or substances that result in observed deposits in the receiving water. (25 Pa Code

§ 92a.41 (c))

2. Oil and grease in amounts that cause a film or sheen upon or discoloration of the waters of this Commonwealth I

or adjoining shoreline, or that exceed 15 mg/I as a daily average or 30 mg/I at any time (or lesser amounts if specified in this permit). (25 Pa. Code§ 92a.47(a)(7), § 95.2(2))

3. Substances in concentration or amounts sufficient to be inimical or harmful to the water uses to be protected I

or to human, animal, plant or aquatic life. (25 Pa Code§ 93.6(a))

4. Foam or substances that produce an observed change in the color, taste, odor or turbidity of the receiving I water, unless those conditions are otherwise controlled through effluent limitations or other requirements in this permit. For the purpose of determining compliance with this condition, DEP will compare conditions in the receiving water upstream of the discharge to conditions in the receiving water approximately 100 feet downstream of the discharge to determine if there is an observable change in the receiving water. (25 Pa I Code § 92a.41 (c))

Footnotes (1) When sampling to determine compliance with mass effluent limitations, the discharge flow at the time of sampling I

must be measured and recorded.

(2) This is the minimum number of sampling events required. Permittees are encouraged, and it may be I advantageous in demonstrating compliance, to perform more than the minimum number of sampling events.

(3) The permittee shall include a comment on its Discharge Monitoring Reports for Internal Monitoring Point 101 ("IMP 101") identifying the discharge pathway for the effluent regulated at IMP 101. This requirement applies I when the Unit #1 Chemical Waste Sump discharges to either the Umt #1 recirculating water system or the cooling tower blowdown discharge line rather than the primary discharge location for IMP 101 's effluent, the Unit #1 Clarifier. (4) If the continuous recorder to measure free available chlorine is inoperable, the permittee shall measure free I

available chlorine two times per day using grab samples at Outfall 001. The monitoring is to be conducted during chlorination. This condition is applicable only if all reasonable measures to repair or replace the recorder are being taken. I

(5) Effluent at Internal Monitoring Points 101, 403, 601, and 701 and Outfalls 001 and 003 shall be sampled and analyzed for Hydrazine and Ammonia-Nitrogen only when Hydrazine is used during periods of wet layup for the affected unit and its corresponding effluent monitoring point(s). *I

(6) Effluent at Outfalls 001 and 004 and Internal Monitoring Point 403 shall be analyzed for Total Chromium and Total Zinc only when chromium and zinc-based additives are added to the cooling water. (7) The permittee shall include a comment on its Discharge Monitoring Reports for Internal Monitoring Point 601 I {"IMP 601") and/or Internal Monitoring Point 701 ("IMP 701 ") identifying the discharge pathway for the effluents regulated at those IMPs and whether the effluents are being monitored (alternatively) at IMP 103 or IMP 403. (8) Refer to Condition VI in Part C of this permit for mercury reporting requirements. For Outfalls 001, 003, and 011, I which are subject to interim and final mercury limits, also refer to Condition VI 11 in Part C of this permit.

36 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING AND REPORTING REQUIREMENTS I (Continued)

(9) Effluent at Outfalls 001, 003, 007, 010 and Internal Monitoring Point 403 shall be analyzed for Nalco H 150M only when there are discharges from facilities that have been treated with a molluscicide/macrofouling biocide and I the bentonite-based detoxicant. Refer to Condition Vin Part C of this permit for additional requirements related to macrofouling control chemicals.

(10) The sample type for samples collected at Internal Monitoring Point 103 to analyze for Total Suspended Solids I shall be 24-hour composite except when TSS concentrations in the Ohio River are elevated due to flooding or heavy rainfall, in which case grab sampling may be used. The permittee shall employ all reasonable measures, including but not limited to heightened settling processes, to control TSS concentrations in the effluent monitored at Internal Monitoring Point 103. I (11) Samples collected to analyze for parameters with a minimum measurement frequency of 1 /6 months shall be taken when storm water is the only source of discharge. As an exception, if there are circumstances whereby storm water is never the sole source of discharge within a semi-annual monitoring period, then samples may be I collected when storm water is discharging in combination with other wastewaters.

Samples collected to analyze for parameters with a minimum measurement frequency of 1 /6 months at Outfall 003 shall be taken at the catch basin at the northeast corner of the north yard. I (12) Sampling and analyses for Flow, pH, TRC, Free Available Chlorine, Temperature, Nalco H150M at Outfall 007 apply only when the alternative flow path for the Reactor Plant River Water system is activated and there are discharges of cooling water from the Unit #1 heat exchangers and chillers through Outfall 007. Ammonia I nitrogen, hydrazine, and Nalco H 150M analyses at Outfall 007 are further subject to Footnotes (5) and (8).

(13) To the extent possible, storm water samples at Outfall 011 shall be collected when rainwater accumulated in the control building and cable tunnel sump is being discharged, whether alone or in combination with storm water I runoff (and only storm water runoff) routed to that outfall.

Pursuant to 40 CFR § 122.44(a)(2) regarding monitoring waivers for certain guideline-listed pollutants, this permit waives the monitoring requirements for low volume waste sources that are otherwise applicable to effluent I discharged at Outfall 011 from the demineralized water sumps and the service water valve pit sump. This waiver applies only for the term of this permit.

Supplemental Information I The effluent limitations for Outfalls 001, 002, 003, 004, 006, 007, 010, 011, 012, and 013 were determined using effluent discharge rates of 36.0 MGD, 1.5 MGD, 0.26 MGD, 2.96 MGD, 0.002 MGD, 0.001 MGD, 3.1 MGD, 0.095 MGD, 0.002 MGD, and 0.002 MGD, respectively. I I I I I

37 I I I

3800-PM-BCW0011 Rev. 2/2020 I Permit Permit No. PA0025615

II. DEFINITIONS At Outfall (XXX) means a sampling location in outfall line XXX below the last point at which wastes are added to I

outfall line (XXX), or where otherwise specified.

Average refers to the use of an arithmetic mean, unless otherwise specified in this permit. (40 CFR I 122.41 (I)(4)(iii))

Best Management Practices (BMPs) means schedules of activities, prohibitions of practices, maintenance procedures and other management practices to prevent or reduce the pollutant loading to surface waters of the I Commonwealth. The term also includes treatment requirements, operating procedures and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. The term includes activities, facilities, measures, planning or procedures used to minimize accelerated erosion and sedimentation and manage stormwater to protect, maintain, reclaim, and restore the quality of waters and the existing and designated uses of waters within this Commonwealth before, during and after earth disturbance activities. (25 Pa. Code § 92a.2)

Bypass means the intentional diversion of waste streams from any portion of a treatment facility. (40 CFR I 122.41 (m)(1 )(i))

Calendar Week is defined as the seven consecutive days from Sunday through Saturday, unless the permittee has been given permission by DEP to provide weekly data as Monday through Friday based on showing excellent I performance of the facility and a history of compliance. In cases when the week falls in two separate months, the month with the most days in that week shall be the month for reporting.

Clean Water Act means the Federal Water Pollution Control Act, as amended. (33 U.S.C.A. §§ 1251 to 1387). I

Chemical Additive means a chemical product (including products of disassociation and degradation, collectively "products") introduced into a waste stream that is used for cleaning, disinfecting, or maintenance and which may be detected in effluent discharged to waters of the Commonwealth. The term generally excludes chemicals used I for neutralization of waste streams, the production of goods, and treatment of wastewater.

Composite Sample (for all except GC/MS volatile organic analysis) means a combination of individual samples (at least eight for a 24-hour period or four for an 8-hour period) of at least 100 milliliters (ml) each obtained at I spaced time intervals during the compositing period. The composite must be flow-proportional; either the volume of each individual sample is proportional to discharge flow rates, or the sampling interval is proportional to the flow rates over the time period used to produce the composite. (EPA Form 2C) Composite Sample (for GC/MS volatile organic analysis) consists of at least four aliquots or grab samples I

collected during the sampling event (not necessarily flow proportioned). A separate analysis should be performed for each sample and the results should be averaged. Daily Average Temperature means the average of all temperature measurements made, or the mean value plot I

of the record of a continuous automated temperature recording instrument, either during a calendar day or during the operating day if flows are of a shorter duration. Daily Discharge means the discharge of a pollutant measured during a calendar day or any 24-hour period that I

reasonably represents the calendar day for purposes of sampling. For pollutants with limitations expressed in units of mass, the "daily discharge" is calculated as the total mass of the pollutant discharged over the day. For pollutants with limitations expressed in other units of measurement, the "daily discharge" is calculated as the I average measurement of the pollutant over the day. (25 Pa. Code§ 92a.2, 40 CFR 122.2)

Daily Maximum Discharge Limitation means the highest allowable "daily discharge." Discharge Monitoring Report (DMR) means the DEP or EPA supplied form(s) for the reporting of self-monitoring I results by the permittee. (25 Pa. Code § 92a.2, 40 CFR 122.2) I

38 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

Estimated Flow means any method of liquid volume measurement based on a technical evaluation of the sources I contributing to the discharge including, but not limited to, pump capabilities, water meters and batch discharge volumes.

Geometric Mean means the average of a set of n sample results given by the nth root of their product. I Grab Sample means an individual sample of at least 100 ml collected at a randomly selected time over a period not to exceed 15 minutes. (EPA Form 2C) I Hazardous Substance means any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act. (40 CFR 122.2)

Hauled-In Wastes means any waste that is introduced into a treatment facility through any method other than a I direct connection to the wastewater collection system. The term includes wastes transported to and disposed of within the treatment facility or other entry points within the collection system.

Immersion Stabilization (i-s) means a calibrated device is immersed in the wastewater until the reading is I stabilized.

Instantaneous Maximum Effluent Limitation means the highest allowable discharge of a concentration or mass of a substance at any one time as measured by a grab sample. (25 Pa. Code § 92a.2) I Measured Flow means any method of liquid volume measurement, the accuracy of which has been previously demonstrated in engineering practice, or for which a relationship to absolute volume has been obtained. I Monthly Average Discharge Limitation means the highest allowable average of "daily discharges" over a calendar month, calculated as the sum of all "daily discharges" measured during a calendar month divided by the number of "daily discharges" measured during that month. (25 Pa. Code § 92a.2)

Municipal Waste means garbage, refuse, industrial lunchroom or office waste and other material, including solid, liquid, semisolid or contained gaseous material resulting from operation of residential, municipal, commercial or institutional establishments and from community activities; and sludge not meeting the definition of residual or hazardous waste under this section from a municipal, commercial or institutional water supply treatment plant, I waste water treatment plant or air pollution control facility. (25 Pa. Code§ 271.1)

Non-contact Cooling Water means water used to reduce temperature which does not come in direct contact with any raw material, intermediate product, waste product (other than heat), or finished product. I Residual Waste means garbage, refuse, other discarded material or other waste, including solid, liquid, semisolid or contained gaseous materials resulting from industrial, mining and agricultural operations and sludge from an industrial, mining or agricultural water supply treatment facility, wastewater treatment facility or air pollution I control facility, if it is not hazardous. The term does not include coal refuse as defined in the Coal Refuse Disposal Control Act. The term does not include treatment sludges from coal mine drainage treatment plants, disposal of which is being carried on under and in compliance with a valid permit issued under the Clean Streams Law. (25 Pa Code§ 287.1) I Severe Property Damage means substantial physical damage to property, damage to the treatment facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused I by delays in production. (40 CFR 122.41 (m)(1 )(ii))

Stormwatermeans the runoff from precipitation, snow melt runoff, and surface runoff and drainage. (25 Pa. Code

§ 92a.2)

I Stormwater Associated With Industrial Activity means the discharge from any conveyance that is used for

collecting and conveying stormwater and that is directly related to manufacturing, processing, or raw materials storage areas at an industrial plant, and as defined at 40 CFR 122.26(b)(14) (i) - (ix) & (xi) and 25 Pa. Code§ I 92a.2.

39 I I I

3800-PM-BCW0011 Rev. 2/2020 I Permit Permit No. PA0025615

Total Dissolved Solids means the total dissolved (filterable) solids as determined by use of the method specified in 40 CFR Part 136.

Toxic Pollutant means those pollutants, or combinations of pollutants, including disease-causing agents, which after discharge and upon exposure, ingestion, inhalation or assimilation into any organism, either directly from I the environment or indirectly by ingestion through food chains may, on the basis of information available to DEP cause death, disease, behavioral abnormalities, cancer, genetic mutations, physiological malfunctions, including malfunctions in reproduction, or physical deformations in these organisms or their offspring. (25 Pa. Code § 92a.2) I I I I I I I I I I I I I

40 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I Ill. SELF-MONITORING, REPORTING AND RECORDKEEPING

A. Representative Sampling

1. Samples and measurements taken for the purpose of monitoring shall be representative of the monitored I activity (40 CFR 122.41(i)(1 )). Representative sampling includes the collection of samples, where possible, during periods of adverse weather, changes in treatment plant performance and changes in treatment plant loading. If possible, effluent samples must be collected where the effluent is well mixed near the center of the discharge conveyance and at the approximate mid-depth point, where the I turbulence is at a maximum and the settlement of solids is minimized. (40 CFR 122.48, 25 Pa. Code§ 92a.61)

2. Records Retention (40 CFR 122.41(j)(2))

I Except for records of monitoring information required by this permit related to the permittee's sludge use and disposal activities which shall be retained for a period of at least 5 years, all records of monitoring I activities and results (including all original strip chart recordings for continuous monitoring instrumentation and calibration and maintenance records), copies of all reports required by this permit, and records of all data used to complete the application for this permit shall be retained by the permittee for 3 years from the date of the sample measurement, report or application, unless a longer retention period is required by the permit. The 3-year period shall be extended as requested by DEP or the EPA I Regional Administrator.

3. Recording of Results (40 CFR 122.41(i)(3))

I For each measurement or sample taken pursuant to the requirements of this permit, the permittee shall record the following information:

• I a. The exact place, date and time of sampling or measurements.

b. The person(s) who performed the sampling or measurements.

c. The date(s) the analyses were performed.

d. The person(s) who performed the analyses.

e. The analytical techniques or methods used; and the associated detection level.

I f. The results of such analyses.

4. Test Procedures I a. Facilities that test or analyze environmental samples used to demonstrate compliance with this permit shall be in compliance with laboratory accreditation requirements of Act 90 of 2002 (27 Pa.

C.S. §§ 4101-4113) and 25 Pa. Code Chapter 252, relating to environmental laboratory accreditation. I

b. Test procedures (methods) for the analysis of pollutants or pollutant parameters shall be those approved under 40 CFR Part 136 or required under 40 CFR Chapter I, Subchapters N or 0, unless the method is specified in this permit or has been otherwise approved in writing by DEP. ( 40 CFR I 122.41(i)(4 ), 122.44(i)(1 )(iv))

c. Test procedures (methods) for the analysis of pollutants or pollutant parameters shall be sufficiently sensitive. A method is sufficiently sensitive when 1) the method minimum level is at or below the I level of the effluent limit established in the permit for the measured pollutant or pollutant parameter; or 2) the method has the lowest minimum level of the analytical methods approved under 40 CFR Part 136 or required under 40 CFR Chapter I, Subchapters N or 0, for the measured pollutant or pollutant parameter; or 3) the method is specified in this permit or has been otherwise approved in I writing by DEP for the measured pollutant or pollutant parameter. Permittees have the option of providing matrix or sample-specific minimum levels rather than the published levels. (40 CFR 122.440)(1 )(iv))

I 5. Quality/Assurance/Control

41 I I I

3800-PM-BCW0011 Rev. 2/2020 I. Permit Permit No. PA0025615

In an effort to assure accurate self-monitoring analyses results: I

a. The permittee, or its designated laboratory, shall participate in the periodic scheduled quality assurance inspections conducted by DEP and EPA. (40 CFR 122.41{e), 122.41(i)(3))

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b. The permittee, or its designated laboratory, shall develop and implement a program to assure the quality and accurateness of the analyses performed to satisfy the requirements of this permit, in accordance with 40 CFR Part 136. (40 CFR 122.41(j)(4))

I B. Reporting of Monitoring Results

1. The permittee shall effectively monitor the operation and efficiency of all wastewater treatment and control facilities, and the quantity and quality of the discharge(s) as specified in this permit. (25 Pa. Code I

§§ 92a.3(c), 92a.41 (a), 92a.44. 92a.61{i) and 40 CFR §§ 122.41(e). 122.44(i)(1 ))

2. The permittee shall use DEP's elE?ctronic Discharge Monitoring Report (eDMR) system to report the results of compliance monitoring under this permit (see www.dep.pa.gov/edmr). Permittees that are not I using the eDMR system as of the effective date of this permit shall submit the necessary registration and trading partner agreement forms to DEP's Bureau of Clean Water (BCW) within 30 days of the effective date of this permit and begin using the eDMR system when notified by DEP BCW to do so. (25 Pa.

Code§§ 92a.3(c). 92a.41(a), 92a.61(g) and 40 CFR § 122.41{1)(4)) I

3. Submission of a physical (paper) copy of a Discharge Monitoring Report (DMR) is acceptable under the following circumstances: I

a. For a permittee that is not yet using the eDMR system, the permittee shall submit a physical copy of a DMR to the DEP regional office that issued the permit during the interim period between the submission of registration and trading partner agreement forms to DEP and DEP's notification to begin using the eDMR system. I

b. For any permittee, as a contingency a physical DMR may be mailed to the DEP regional office that issued the permit if there are technological malfunction(s) that prevent the successful submission of a DMR through the eDMR system. In such situations, the permittee shall submit the DMR through I the eDMR system within 5 days following remedy of the malfunction(s).

4. DMRs must be completed in accordance with DEP's published DMR instructions (3800-FM-BCW0463). I DMRs must be received by DEP no later than 28 days following the end of the monitoring period. DMRs are based on calendar reporting periods and must be received by DEP in accordance with the following schedule:

Monthly DMRs must be received within 28 days following the end of each calendar month. I Quarterly DMRs must be received within 28 days following the end of each calendar quarter, i.e., January 28, April 28, July 28, and October 28. Semiannual DMRs must be received within 28 days following the end of each calendar semiannual period, i.e., January 28 and July 28. I Annual DMRs must be received by January 28, unless Part C of this permit requires otherwise.

5. The permittee shall complete all Supplemental Reporting forms (Supplemental DMRs) attached to this permit, or an approved equivalent, and submit the signed, completed forms as attachments to the DMR, I through DEP's eDMR system. DEP's Supplemental Laboratory Accreditation Form (3800-FM BCW0189) must be completed and submitted to DEP with the first DMR following issuance of this permit, and anytime thereafter when changes to laboratories or methods occur. (25 Pa. Code §§ 92a.3(c),

92a.41(a), 92a.61(g) and 40 CFR § 122.41(1)(4)) I

6. The completed DMR Form shall be signed and certified by either of the following applicable persons, as defined in 25 Pa. Code § 92a.22:

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For a corporation - by a principal executive officer of at least the level of vice president, or an I authorized representative, if the representative is responsible for the overall operation of the facility from which the discharge described in the NPDES form originates. For a partnership or sole proprietorship - by a general partner or the proprietor, respectively. For a municipality, state, federal or other public agency - by a principal executive officer or ranking I elected official.

If signed by a person other than the above and for co-permittees, written notification of delegation of DMR signatory authority must be submitted to DEP in advance of or along with the relevant DMR form. I (40 CFR § 122.22(b))

7. If the permittee monitors any pollutant at monitoring points as designated by this permit, using analytical methods described in Part A II1.A.4. herein, more frequently than the permit requires, the results of this I monitoring shall be incorporated, as appropriate, into the calculations used to report self-monitoring data on the DMR. (40 CFR 122.41(I)(4)(ii))

C. Reporting Requirements I

1. Planned Changes to Physical Facilities - The permittee shall give notice to DEP as soon as possible but no later than 30 days prior to planned physical alterations or additions to the permitted facility. A permit under 25 Pa. Code Chapter 91 may be required for these situations prior to implementing the planned I changes. A permit application, or other written submission to DEP, can be used to satisfy the notification requirements of this section.

I Notice is required when:

a. The alteration or addition to a permitted facility may meet one of the criteria for determining whether a facility is a new source in 40 CFR 122.29(b). (40 CFR 122.41(1)(1)(i))

I b. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which are not subject to effluent limitations in this permit. (40 CFR 122.41 (1)(1 )(ii)) I c. The alteration or addition results in a significant change in the permittee's sludge use or disposal practices, and such alteration, addition, or change may justify the application of permit conditions that are different from or absent in the existing permit, including notification of additional use or disposal sites not reported during the permit application process or not reported pursuant to an I approved land application plan. (40 CFR 122.41(1)(1)(iii))

d. The planned change may result in noncompliance with permit requirements. (40 CFR 122.41(1)(2))

I 2. Planned Changes to Waste Stream - Under the authority of 25 Pa. Code § 92a.24(a), the permittee shall provide notice to DEP as soon as possible but no later than 45 days prior to any planned changes in the volume or pollutant concentration of its influent waste stream, as specified in paragraphs 2.a. and 2.b., below. Notice shall be provided on the "Planned Changes to Waste Stream" Supplemental Report I (3800-FM-BCW0482), available on DEP's website. The permittee shall provide information on the quality and quantity of waste introduced into the facility, and any anticipated impact of the change on the quantity or quality of effluent to be discharged from the facility. The Report shall be sent via Certified Mail or other means to confirm DEP's receipt of the notification. DEP will determine if the submission of I a new application and receipt of a new or amended permit is required.

a. Introduction of New Pollutants (25 Pa. Code § 92a.24(a))

I New pollutants are defined as parameters that meet all of the following criteria:

(i) Were not detected in the facilities' influent waste stream as reported in the permit application; and I

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(ii) Have not been approved to be included in the permittee's influent waste stream by DEP in writing.

The permittee shall provide notification of the introduction of new pollutants in accordance with paragraph 2 above. The permittee may not authorize the introduction of new pollutants until the permittee receives DEP's written approval. I

b. Increased Loading of Approved Pollutants (25 Pa. Code § 92a.24{a))

Approved pollutants are defined as parameters that meet one or more of the following criteria: I

(i) Were detected in the facilities' influent waste stream as reported in the permittee's permit application; or I (ii) Have been approved to be included in the permittee's influent waste stream by DEP in writing; or

(iii) Have an effluent limitation or monitoring requirement in this permit. I

The permittee shall provide notification of the introduction of increased influent loading (lbs/day) of approved pollutants in accordance with paragraph 2 above when (1) the cumulative increase in influent loading (lbs/day) exceeds 20% of the maximum loading reported in the permit application, or a loading previously approved by DEP, or (2) may cause an exceedance in the effluent of Effluent Limitation Guidelines (ELGs) or limitations in Part A of this permit, or (3) may cause interference or pass through at the facility (as defined at 40 CFR 403.3), or (4) may cause exceedances of the applicable water quality standards in the receiving stream. Unless specified otherwise in this permit, I if DEP does not respond to the notification within 30 days of its receipt, the permittee may proceed with the increase in loading. The acceptance of increased loading of approved pollutants may not result in an exceedance of ELGs or effluent limitations and may not cause exceedances of the applicable water quality standards in the receiving stream. I

3. Reporting Requirements for Hauled-In Wastes

a. Receipt of Residual Waste I

(i) The permittee shall document the receipt of all hauled-in residual wastes (including but not limited to wastewater from oil and gas wells, food processing waste, and landfill leachate), as defined at 25 Pa. Code § 287.1, that are received for processing at the treatment facility. The permittee shall report hauled-in residual wastes on a monthly basis to DEP on the "Hauled In Residual Wastes" Supplemental Report (3800-FM-BCW0450) as an attachment to the DMR. If no residual wastes were received during a month, submission of the Supplemental Report is not required. I

The following information is required by the Supplemental Report. The information used to develop the Report shall be retained by the permittee for five years from the date of receipt and must be made available to DEP or EPA upon request. I

(1) The dates that residual wastes were received.

(2) The volume (gallons) of wastes received. I

(3) The license plate number of the vehicle transporting the waste to the treatment facility.

(4) The permit number(s) of the well(s) where residual wastes were generated, if applicable. I

(5) The name and address of the generator of the residual wastes.

(6) The type of wastewater. I

44 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I The transporter of residual waste must maintain these and other records as part of the daily operational record (25 Pa. Code § 299.219). If the transporter is unable to provide this information or the permittee has not otherwise received the information from the generator, the residual wastes shall not be accepted by the permittee until such time as the permittee receives I such information from the transporter or generator.

(ii) The following conditions apply to the characterization of residual wastes received by the permittee: I (1) If the generator is required to complete a chemical analysis of residual wastes in accordance with 25 Pa. Code § 287.51, the permittee must receive and maintain on file a chemical analysis of the residual wastes it receives. The chemical analysis must conform to the I Bureau of Waste Management's Form 26R except as noted in paragraph (2), below. Each load of residual waste received must be covered by a chemical analysis if the generator is required to complete it. I (2) For wastewater generated from hydraulic fracturing operations ("frac wastewater") within the first 30 production days of a well site, the chemical analysis may be a general frac wastewater characterization approved by DEP. Thereafter, the chemical analysis must be waste-specific and be reported on the Form 26R. I

b. Receipt of Municipal Waste

(i) The permittee shall document the receipt of all hauled-in municipal wastes (including but not I limited to septage and liquid sewage sludge), as defined at 25 Pa. Code§ 271.1, that are received for processing at the treatment facility. The permittee shall report hauled-in municipal wastes on a monthly basis to DEP on the "Hauled In Municipal Wastes" Supplemental Report (3800-FM-BCW0437) as an attachment to the DMR. If no municipal wastes were received I during a month, submission of the Supplemental Report is not required.

The following information is required by the Supplemental Report: I (1) The dates that municipal wastes were received.

(2) The volume (gallons) of wastes received. I (3) The BODs concentration (mg/I) and load (lbs) for the wastes received.

(4) The location(s) where wastes were disposed of within the treatment facility. I (ii) Sampling and analysis of hauled-in municipal wastes must be completed to characterize the organic strength of the wastes, unless composite sampling of influent wastewater is performed at a location downstream of the point of entry for the wastes. I 4. Unanticipated Noncompliance or Potential Pollution Reporting

a. Immediate Reporting - The permittee shall immediately report any incident causing or threatening pollution in accordance with the requirements of25 Pa. Code§§ 91.33 and 92a.41(b).

I (i) If, because of an accident, other activity or incident a toxic substance or another substance which would endanger users downstream from the discharge, or would otherwise result in pollution or create a danger of pollution or would damage property, the permittee shall I immediately notify DEP by telephone of the location and nature of the danger. Oral notification to the Department is required as soon as possible, but no later than 4 hours after the permittee becomes aware of the incident causing or threatening pollution. I

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(ii) If reasonably possible to do so, the permittee shall immediately notify downstream users of the waters of the Commonwealth to which the substance was discharged. Such notice shall include I the location and nature of the danger.

(iii) The permiltee shall immediately take or cause to be taken steps necessary to prevent injury to property and downstream users of the waters from pollution or a danger of pollution and, in I addition, within 15 days from the incident, shall remove the residual substances contained thereon or therein from the ground and from the affected waters of this Commonwealth to the extent required by applicable law. I

b. The permittee shall report any noncompliance which may endanger health or the environment in accordance with the requirements of 40 CFR 122.41 (1)(6). These requirements include the following obligations:

I (i) 24 Hour Reporting - The permittee shall orally report any noncompliance with this permit which may endanger health or the environment within 24 hours from the time the permittee becomes aware of the circumstances. The following shall be included as information which must be reported within 24 hours under this paragraph: I

(1) Any unanticipated bypass which exceeds any effluent limitation in the permit;

(2) Any upset which exceeds any effluent limitation in the permit; and I

(3) Violation of the maximum daily discharge limitation for any of the pollutants listed in the permit as being subject to the 24-hour reporting requirement. (40 CFR 122.44(g)) I (ii) Written Report -A written submission shall also be provided within 5 days of the time the permittee becomes aware of any noncompliance which may endanger health or the environment. The written submission shall contain a description of the noncompliance and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been I corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.

(iii) Waiver of Written Report - DEP may waive the written report on a case-by-case basis if the I associated oral report has been received within 24 hours from the time the permittee becomes aware of the circumstances which may endanger health or the environment. Unless such a waiver is expressly granted by DEP, the permittee shall submit a written report in accordance with this paragraph. (40 CFR 122.41(1}(6)(iii)) I

5. Other Noncompliance

The permittee shall report all instances of noncompliance not reported under paragraph C.4 of this I section or specific requirements of compliance schedules, at the time DMRs are submitted, on the Non Compliance Reporting Form (3800-FM-BCW0440). The reports shall contain the information listed in paragraph C.4.b.(ii) of this section. (40 CFR 122.41 (1)(7)) I D. Specific Toxic Pollutant Notification Levels (for Manufacturing, Commercial, Mining, and Silvicultural Direct Dischargers) - The permittee shall notify DEP as soon as it knows or has reason to believe the following: (40 CFR 122.42(a)) I

1. That any activity has occurred, or will occur, which would result in the discharge of any toxic pollutant which is not limited in this permit, if that discharge on a routine or frequent basis will exceed the highest of the following "notification levels": (40 CFR 122.42(a)(1 ))

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a. One hundred micrograms per liter.

b. Two hundred micrograms per liter for acrolein and acrylonitrile.

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46 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

c. Five hundred micrograms per liter for 2,4-dinitrophenol and 2-methyl-4,6-dinitrophenol.

I d. One milligram per liter for antimony.

e. Five times the maximum concentration value reported for that pollutant in this permit application.

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f. Any other notification level established by DEP.

2. That any activity has occurred or will occur which would result in any discharge, on a nonroutine or I infrequent basis, of a toxic pollutant which is not limited in this permit, if that discharge will exceed the highest of the following "notification levels": (40 CFR 122.42(a)(2))

a. Five hundred micrograms per liter.

I b. One milligram per liter for antimony.

c. Ten times the maximum concentration value reported for that pollutant in the permit application.

I d. Any other notification level established by DEP.

E. Annual Fee (25 Pa. Code§ 92a.62) I Permittees shall pay an annual fee in accordance with 25 Pa. Code § 92a.62. As of the effective date of this permit, the facility covered by the permit is classified in the Major IW Facility <250 MGD fee category, which has an annual fee of $7,500. I Invoices for annual fees will be mailed to permittees approximately three months prior to the due date. In the event that an invoice is not received, the permittee is nonetheless responsible for payment. Permittees may contact the DEP at 717-787-6744 with questions related to annual fees. The fee identified above is subject I to change if DEP publishes changes to 25 Pa. Code § 92a.62.

Payment for annual fees shall be remitted to DEP at the address below or through DEP's electronic payment system (www.depgreenport.state.pa.us/NPDESpay) by the due date specified on the invoice. Checks, if used I for payment, should be made payable to the Commonwealth of Pennsylvania.

PA Department of Environmental Protection Bureau of Clean Water I Re: Chapter 92a Annual Fee P.O. Box 8466 Harrisburg, PA 17105-8466 I I I I I

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PARTS I I. MANAGEMENT REQUIREMENTS

A. Compliance I

1. The permittee shall comply with all conditions of this permit. If a compliance schedule has been established in this permit, the permittee shall achieve compliance with the terms and conditions of this permit within the time frames specified in this permit. (40 CFR 122.41(a)(1)) I

2. The permittee shall submit reports of compliance or noncompliance, or progress reports as applicable, for any interim and final requirements contained in this permit. Such reports shall be submitted no later than 14 days following the applicable schedule date or compliance deadline. (25 Pa. Code§ 92a.51 (c), I 40 CFR 122.47(a)(4))

B. Permit Modification, Termination, or Revocation and Reissuance

1. This permit may be modified, terminated, or revoked and reissued during its term in accordance with 25 I Pa. Code § 92a. 72 and 40 CFR 122.41 (f).

2. The filing of a request by the permittee for a permit modification, revocation and reissuance, or I termination, or a notification of planned changes or anticipated noncompliance, does not stay any permit condition. (40 CFR 122.41{0)

3. In the absence of DEP action to modify or revoke and reissue this permit, the permittee shall comply I with effluent standards or prohibitions established under Section 307(a) of the Clean Water Act for toxic pollutants within the time specified in the regulations that establish those standards or prohibitions. (40 CFR 122.41{a)(1))

C. Duty to Provide Information I

1. The permittee shall furnish to DEP, within a reasonable time, any information which DEP may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit, or to I determine compliance with this permit. (40 CFR 122.41 (h))

2. The permittee shall furnish to DEP, upon request, copies of records required to be kept by this permit.

(40 CFR 122.41{h)) I

3. Other Information - Where the permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or in any report to DEP, it shall promptly submit the correct and complete facts or information. (40 CFR 122.41(1)(8))

I D. Proper Operation and Maintenance

The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with I the terms and conditions of this permit. Proper operation and maintenance includes, but is not limited to, adequate laboratory controls including appropriate quality assurance procedures. This provision also includes the operation of backup or auxiliary facilities or similar systems that are installed by the permittee, only when necessary to achieve compliance with the terms and conditions of this permit. (40 CFR 122.41 (e)) I

E. Duty to Mitigate

The permittee shall take all reasonable steps to minimize or prevent any discharge, sludge use or disposal in violation of this permit that has a reasonable likelihood of adversely affecting human health or the environment. (40 CFR 122.41(d))

F. Bypassing I

48 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I 1. Bypassing Not Exceeding Permit Limitations - The permittee may allow a bypass to occur which does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions in paragraphs two, three and four of this section. (40 CFR 122.41 (m)(2)) I

2. Other Bypassing - In all other situations, bypassing is prohibited and DEP may take enforcement action against the permittee for bypass unless:

I a. A bypass is unavoidable to prevent loss of life, personal injury or "severe property damage." (40 CFR 122.41(m)(4)(i)(A))

b. There are no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, I retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate backup equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance. (40 CFR 122.41(m)(4)(i)(B))

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c. The permittee submitted the necessary notice required in F.4.a. and b. below. (40 CFR 122.41(m)

(4)(i)(C)) I 3. DEP may approve an anticipated bypass, after considering its adverse effects, if DEP determines that it will meet the conditions listed in F.2. above. (40 CFR 122.41(m)(4)(ii))

4. Notice I

a. Anticipated Bypass - If the permittee knows in advance of the need for a bypass, it shall submit prior notice, if possible, at least 10 days before the bypass. (40 CFR 122.41 (m)(3)(i))

I b. Unanticipated Bypass - The permittee shall submit oral notice of any other unanticipated bypass within 24 hours, regardless of whether the bypass may endanger health or the environment or whether the bypass exceeds effluent limitations. The notice shall be in accordance with Part A II1.C.4.b. I G. Termination of Permit Coverage (25 Pa. Code§ 92a.74 and 40 CFR 122.64)

1. Notice of Termination (NOT) - If the permittee plans to cease operations or will otherwise no longer I require coverage under this permit, the permittee shall submit DEP's NPDES Notice of Termination (NOT) for Permits Issued Under Chapter 92a (3800-BCW-0410), signed in accordance with Part A 111. B.6 of this permit, at least 30 days prior to cessation of operations or the date by which coverage is no longer required.

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2. Where the permittee plans to cease operations, NOTs must be accompanied with an operation closure plan that identifies how tankage and equipment will be decommissioned and how pollutants will be managed, as applicable.

I 3. The permittee shall submit the NOT to the DEP regional office with jurisdiction over the county in which

the facility is located. I II. PENAL TIES AND LIABILITY

A. Violations of Permit Conditions I Any person violating Sections 301, 302, 306, 307, 308, 318 or 405 of the Clean Water Act or any permit condition or limitation implementing such sections in a permit issued under Section 402 of the Act is subject to civil, administrative and/or criminal penalties as set forth in 40 CFR 122.41 (a)(2). I

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Any person or municipality, who violates any provision of this permit; any rule, regulation or order of DEP; or any condition or limitation of any permit issued pursuant to the Clean Streams Law, is subject to criminal I and/or civil penalties as set forth in Sections 602, 603 and 605 of the Clean Streams Law.

B. Falsifying Information I Any person who does any of the following:

Falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required to be maintained under this permit, or I

Knowingly makes any false statement, representation, or certification in any record or other document submitted or required to be maintained under this permit (including monitoring reports or reports of compliance or noncompliance) I

Shall, upon conviction, be punished by a fine and/or imprisonment as set forth in 18 Pa.C.S.A § 4904 and 40 CFR 122.41 U)(5) and (k)(2). I C. Liability

Nothing in this permit shall be construed to relieve the permittee from civil or criminal penalties for noncompliance pursuant to Section 309 of the Clean Water Act or Sections 602, 603 or 605 of the Clean I Streams Law.

Nothing in this permit shall be construed to preclude the institution of any legal action or to relieve the permittee from any responsibilities, liabilities or penalties to which the permittee is or may be subject to under I the Clean Water Act and the Clean Streams Law.

D. Need to Halt or Reduce Activity Not a Defense I It shall not be a defense for the permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. (40 CFR 122.41/c)) I Ill. OTHER RESPONSIBILITIES

A. Right of Entry

Pursuant to Sections 5(b) and 305 of Pennsylvania's Clean Streams Law, and Title 25 Pa. Code Chapter 92a and 40 CFR 122.41 (i), the permittee shall allow authorized representatives of DEP and EPA, upon the presentation of credentials and other documents as may be required by law: I

1. To enter upon the permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit; (40 CFR 122.41 (i)(1))

2. To have access to and copy, at reasonable times, any records that must be kept under the conditions of I this permit; (40 CFR 122.41(i)(2))

3. To inspect at reasonable times any facilities, equipment (including monitoring and control equipment),

practices or operations regulated or required under this permit; and (40 CFR 122.41 (i)(3)) I

4. To sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the Clean Water Act or the Clean Streams Law, any substances or parameters at any location. (40 CFR 122.41(i)(4)) I

B. Transfer of Permits I

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1. Transfers by modification. Except as provided in paragraph 2 of this section, a permit may be transferred I by the permittee to a new owner or operator only if this permit has been modified or revoked and reissued, or a minor modification made to identify the new permittee and incorporate such other requirements as may be necessary under the Clean Water Act. (40 CFR 122.61 (a))

I 2. Automatic transfers. As an alternative to transfers under paragraph 1 of this section, any NPDES permit may be automatically transferred to a new permittee if:

a. The current permittee notifies DEP at least 30 days in advance of the proposed transfer date in I paragraph 2.b. of this section; (40 CFR 122.61(b)(1 ))

b. The notice includes the appropriate DEP transfer form signed by the existing and new permittees containing a specific date for transfer of permit responsibility, coverage and liability between them; I (40 CFR 122.61(b)(2})

c. DEP does not notify the existing permittee and the proposed new permittee of its intent to modify or revoke and reissue this permit, the transfer is effective on the date specified in the agreement I mentioned in paragraph 2.b. of this section; and (40 CFR 122.61(b)(3))

d. The new permittee is in compliance with existing DEP issued permits, regulations, orders and schedules of compliance, or has demonstrated that any noncompliance with the existing permits has I been resolved by an appropriate compliance action or by the terms and conditions of the permit (including compliance schedules set forth in the permit), consistent with 25 Pa. Code §_92a.51 (relating to schedules of compliance) and other appropriate DEP regulations. (25 Pa. Code§ 92a.71)

I 3. In the event DEP does not approve transfer of this permit, the new owner or operator must submit a new permit application.

C. Property Rights I The issuance of this permit does not convey any property rights of any sort, or any exclusive privilege. (40 CFR 122.41(g)) I D. Duty to Reapply

If the permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the permittee must apply for a new permit. (40 CFR 122.41(b)) I E. Other Laws

The issuance of this permit does not authorize any injury to persons or property or invasion of other private I rights, or any infringement of state or local law or regulations. I I I I

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PARTC I I. OTHER REQUIREMENTS

A. The approval herein given is specifically made contingent upon the permittee acquiring all necessary property rights by easement or otherwise, providing for the satisfactory construction, operation, maintenance I or replacement of all structures associated with the herein approved discharge in, along, or across private property, with full rights of ingress, egress and regress.

B. Collected screenings, slurries, sludges, and other solids shall be handled, recycled and/or disposed of in I compliance with the Solid Waste Management Act (35 P.S. §§ 6018.101 - 6018.1003), 25 Pa. Code Chapters 287, 288, 289, 291, 295, 297, and 299 (relating to requirements for landfilling, impoundments, land application, composting, processing, and storage of residual waste), Chapters 261a, 262a, 263a, and 270a I (related to identification of hazardous waste, requirements for generators and transporters, and hazardous waste, requirements for generators and transporters, and hazardous waste permit programs), federal regulation 40 CFR Part 257, The Clean Streams Law, and the Federal Clean Water Act and its amendments. Screenings collected at intake structures shall be collected and managed and not be returned to the receiving I waters.

The permittee is responsible to obtain or assure that contracted agents have all necessary permits and approvals for the handling, storage, transport and disposal of solid waste materials generated as a result of I wastewater treatment.

C. The terms and conditions of Water Quality Management (WQM) permits that may have been issued to the permittee relating to discharge requirements are superseded by this NPDES permit unless otherwise stated I herein.

D. If the applicable standard or effluent guideline limitation relating to the application for Best Available Technology (BAT) Economically Achievable or to Best Conventional Technology (BCT) is developed by DEP I or EPA for this type of industry, and if such standard or limitation is more stringent than the corresponding limitations of this permit (or if it controls pollutants not covered by this permit), DEP may modify or revoke and reissue the permit to conform with that standard or limitation.

E. The permittee shall optimize chlorine dosages used for disinfection or other purposes to minimize the I concentration of Total Residual Chlorine (TRC) in the effluent, meet applicable effluent limitations, and reduce the possibility of adversely affecting the receiving waters. Optimization efforts may include an evaluation of wastewater characteristics, mixing characteristics, and contact times, adjustments to process I controls, and maintenance of the disinfection facilities. If DEP determines that effluent TRC is causing adverse water quality impacts, DEP may reopen this permit to apply new or more stringent effluent limitations and/or require implementation of control measures or operational practices to eliminate such impacts.

Where the permittee does not use chlorine for primary or backup disinfection, but proposes the use of I chlorine for cleaning or other purposes, the permittee shall notify DEP prior to initiating use of chlorine and monitor TRC concentrations in the effluent on each day in which chlorine is used. The results shall be submitted as an attachment to the DMR. I

F. Temperature

This discharge shall not cause a change in the stream temperature of more than 2°F during any one hour. I G. Chlorine or other approved biocides may not be discharged from any single generating unit for more than two hours per day unless the discharger demonstrates to the permitting authority that discharges for more than two hours are required for macroinvertebrate control. Simultaneous multi-unit chlorination/biocide I application is permitted.

H. There shall be no net addition of pollutants to non-contact cooling water over intake values except for heat and water conditioning additives for which complete information was submitted in the application or is I required to be submitted as a condition of this permit.

52 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I I. There shall be no discharge of polychlorinated biphenyl (PCB) compounds such as those commonly used for transformer fluid at any time.

J. Water borne releases of radioactive material to unrestricted areas shall conform to criteria set forth in 10 I CFR Part 50, Appendix I - numerical guides for design objectives and limiting conditions for operation to meet the criterion "as low as is reasonably achievable" for radioactive material in light-water-cooled nuclear reactor effluents, as implemented through the environmental technical specifications for the facility. I The facility operator shall provide DEP with copies of reports specifying the quantities of radioactive material released to unrestricted areas in liquid/gaseous effluents.

The facility operator shall provide DEP with copies of reports of the results of environmental surveillance I activities and other such reports, as necessary, for the estimation of the dose consequential to facility operation.

The above reports are to be forwarded to the following agency: I Pennsylvania Department of Environmental Protection Bureau of Radiation Protection 13th Floor, Rachel Carson State Office Building I P.O. Box 8469 Harrisburg, PA 17105-8469

K. In accordance with ORSANCO's Pollution Control Standards, the permittee shall post and maintain a I permanent marker at the establishment under permit as follows:

1. A marker shall be posted on the stream bank at each outfall discharging directly to the Ohio River (Outfalls 001, 002, 003, 004, 006, 007, 008, 010, 011, and 019).

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2. The marker shall consist of, at a minimum, the name of the establishmentto which the permit was issued, the permit number, and the outfall number. The information shall be printed in letters not less than two inches in height.

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3. The marker shall be a minimum of two feet by two feet and shall be a minimum of three feet above ground level.

I L. Cooling tower blowdown discharges shall contain no detectable amounts of the 126 Priority Pollutants listed in 40 CFR Part 423, Appendix A, that are contained in chemicals added for cooling tower maintenance, except for Total Chromium and Total Zinc. When requested by DEP, the permittee shall conduct monitoring or submit engineering calculations to demonstrate compliance with 40 CFR 423.13(d)(1 ). I N. The permittee is authorized to use a 30% solution of hydrogen peroxide or equivalent amounts of sodium

hypochlorite at the Internal Monitoring Points and Outfalls listed in Footnote 5 in Part A of this permit to oxidize unreacted Hydrazine in the wet layup from the Unit #1 and Unit #2 secondary systems provided I compliance with pH limitations is maintained.

0. The permittee shall implement Best Management Practices to minimize the amount of deionized water storage tank drainage discharged through the storm water drains via Outfall 003.

I II. CHEMICAL ADDITIVES

A. Approved Chemical Additives List I 1. The permittee is authorized to use chemical additives that are published on DEP's Approved Chemical

Additives List (Approved List) (see www.dep.pa.gov/chemicaladditives) subject to paragraphs A.2 and A.3, below. I

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2. The permittee may not discharge a chemical additive at a concentration that is greater than the water quality-based effluent limitation (WQBEL) for the chemical additive or, if applicable, a technology-based I effluent limitation. If effluent limitations are not specified in Part A of this permit for the chemical additive, the permittee is responsible for determining the WQBEL and ensuring the WQBEL is not exceeded by restricting usage to an amount that will not cause an excursion above in-stream water quality standards.

3. If the permittee decides to use a chemical additive that is on DEP's Approved List and the use would I

either (1) constitute an increase in the usage rate specified in the NPDES permit application or previous notification to DEP or (2) constitute a new use, not identified in the NPDES permit application or otherwise no previous notification occurred, the permittee shall complete and submit the "Chemical I Additives Notification Form" (3800-FM-BCW0487) to the DEP regional office that issued the permit. The permittee may proceed to use the chemical additive as reported on the Form upon receipt by the DEP regional office. B. New Chemical Additives, Not on Approved Chemical Additives List I

1. In the event the permittee wishes to use a chemical additive that is not listed on DEP's Approved List, the permittee shall submit the "New Chemical Additives Request Form" (3800-FM-BCW0486) to DE P's I Central Office, Bureau of Clean Water (BCW), NPDES Permitting Division, Rachel Carson State Office Building, PO Box 8774, Harrisburg, PA 17105-8774, prior to use. A copy shall be submitted to the DEP regional office that issued the permit. The form must be completed in whole in order for BCW to approve the chemical additive, and a Safety Data Sheet (SOS) that meets the minimum requirements of 29 CFR I 1910.1200(g) must be attached.

2. Following placement of the chemical additive on the Approved List, the permittee may submit the Chemical Additive Notification Form in accordance with paragraph A.3, above, to notify DEP of the intent I to use the approved chemical additive. The permittee may proceed with usage when the new chemical has been identified on DEP's Approved List and following DEP's receipt of the Chemical Additives Notification Form.

3. The permittee shall restrict usage of chemical additives to the maximum usage rates determined and I reported to DEP on Chemical Additives Notification Forms.

C. Chemical Additives Usage Reporting Requirements I

The "Chemical Additives Usage Form" (3800-FM-BCW0439) shall be used to report the usage of chemical additives and shall be submitted as an attachment to the Discharge Monitoring Report (DMR) at the time the DMR is submitted. I

D. DEP may amend this permit to include WQBELs or otherwise control usage rates of chemical additives if there is evidence that usage is adversely affecting receiving waters, producing Whole Effluent Toxicity test failures, or is causing excursions of in-stream water quality standards. I

E. Wood Flour

The permittee shall submit advance written notification to DEP if circumstances at the facility require an I increase in the usage rate of wood flour above the rates approved for use pursuant to Sections A or B of this condition. The notification shall report the approved usage rate, the proposed increased usage rate, and the expected duration of the increased usage rate.

Ill. REQUIREMENTS APPLICABLE TO STORMWATER OUTFALLS I

A. The permittee is authorized to discharge non-polluting stormwater from its site, alone or in combination with other wastewaters, through the following outfalls: I

Outfall No. Area Drained (ft2 ) Latitude Longitude Description 003 495,225 40° 37' 27.00" -80° 26' 6.00" Plant runoff 008 40,257 40° 37' 30.00" -80° 26' 1.00" Plant runoff 011 315,667 40° 37' 26.00" -80° 26' 5.00" Plant runoff

54 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

Outfall No. Area Drained (ft2 ) Latitude Longitude Description I 012 47,235 40° 37' 24.20" -80° 25' 41.60" Plant runoff 013 134,830 40° 37' 25.1 0" -80° 25' 47.10" Plant runoff 014 212,352 40° 37' 25.80" -80° 25' 47.20" Plant runoff 015 58,008 40° 37' 23.90" -80° 25' 44.40" Plant runoff I 016 67,223 40° 37' 20.40" -80° 25' 40.80" Plant runoff 017 31,490 40° 37' 18.50" -80° 25' 38.70" Plant runoff 019 1,796,000 40° 37' 15.00" -80° 26' 20.70" Plant runoff I Monitoring requirements and effluent limitations for these outfalls are specified in Part A of this permit, if applicable. I B. Stormwater Annual Report.

The permittee shall submit a complete Annual Report to the DEP office that issued the permit by May 1 each year using DEP's Annual Report template, attached to this permit. The Annual Report shall address activities I under the permit for the previous calendar year. The permittee shall submit the Annual Report electronically if notified by DEP in writing. If the permittee discharges to a municipal separate storm sewer system (MS4), a copy of the Annual Report shall be submitted to the operator of the MS4. I C. Best Management Practices (BMPs).

The permittee shall implement and, as necessary, maintain the following BMPs to remain in compliance with this permit. I 1. Pollution Prevention and Exposure Minimization.

The permittee shall minimize the exposure of manufacturing, processing, and material storage areas I (including loading and unloading, storage, disposal, cleaning, maintenance, and fueling operations) to rain, snow, snowmelt, and runoff in order to minimize pollutant discharges by either locating industrial materials and activities inside or protecting them with storm resistant coverings wherever feasible. The permittee shall implement and maintain the following measures, at a minimum: I a. Use grading, berming or curbing to prevent runoff of polluted stormwater and divert run-on away from areas that contain polluted stormwater I b. Locate materials, equipment, and activities so that potential leaks and spills are contained or able to be contained or diverted before discharge to surface waters

c. Clean up spills and leaks promptly using dry methods (e.g., absorbents) to prevent the discharge of I pollutants to surface waters

d. Store leaky vehicles and equipment indoors or, if stored outdoors, use drip pans and absorbents to prevent the release of pollutants to the environment.

I e. Use spill/overflow protection equipment.

f. Perform all vehicle and/or equipment cleaning operations indoors, under cover, or in bermed areas I that prevent runoff and run-on and also that capture any overspray.

g. Drain fluids from equipment and vehicles that will be decommissioned, and, for any equipment and vehicles that will remain unused for extended periods of time, inspect at least monthly for leaks.

I h. Keep all dumpster lids closed when not in use. For dumpsters and roll off boxes that do not have lids, ensure that discharges have a control (e.g., secondary containment, treatment). This General Permit does not authorize dry weather discharges from dumpsters or roll off boxes. I i. Minimize contamination of stormwater runoff from fueling areas by implementing the following BMPs

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where determined to be feasible: cover fueling areas; install oil/water separators or oil and grease traps in fueling area storm drains; use berms to prevent run-on to and runoff from fueling areas; use I spill/overflow protection and cleanup equipment; use dry cleanup methods; and/or treat and/or recycle collected stormwater runoff.

j. Train employees routinely (no less than annually) on pollution prevention practices as contained in I the PPC Plan.

2. Good Housekeeping.

The permittee shall perform good housekeeping measures in order to minimize pollutant discharges I

including the routine implementation of the following measures, at a minimum:

a. Implement a routine cleaning and maintenance program for all impervious areas of the facility where I particulate matter, dust or debris may accumulate to minimize the discharge of pollutants in stormwater. The cleaning and maintenance program must encompass, as appropriate, areas where material loading and unloading, storage, handling and processing occur.

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b. Store materials in appropriate containers.

c. Minimize the potential for waste, garbage and floatable debris to be discharged by keeping exposed areas free of such materials, or by intercepting them before they are discharged. I

ct. Eliminate floor drain connections to storm sewers.

e. Use drip pans, drain boards, and drying racks to direct drips back into a fluid holding tank for reuse. I Drain fluids from all equipment and parts prior to disposal. Promptly transfer used fluids to the proper container; do not leave full drip pans or other open containers around the shop. Empty and clean drip pans and containers.

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f. Label and track the recycling of waste material (e.g., used oil, spent solvents, batteries).

g. Prohibit the practice of hosing down an area where the practice would result in the discharge of pollutants to a municipal or other storm water collection system that conveys pollutants off-site I without proper treatment.

3. Erosion and Sediment Controls.

a. The permittee shall minimize erosion and pollutant discharges by stabilizing exposed soils and I

placing flow velocity dissipation devices at discharge locations to minimize channel and stream bank erosion and scour in the immediate vicinity of stormwater outfalls.

b. The permittee shall conduct all earth disturbance activities and, when applicable, shall maintain all I

post-construction stormwater management (PCSM) BMPs in accordance with 25 Pa. Code Chapter 102.

c. The permittee may not utilize polymers or other chemicals to treat stormwater unless written I

permission is obtained from DEP.

4. Spill Prevention and Responses. I

The permittee shall minimize the potential for leaks, spills and other releases that may be exposed to stormwater and develop a PPC Plan for effective responses to such releases. The permittee shall conduct the following spill prevention and response measures, at a minimum: I

a. Maintain an organized inventory of materials on-site. Plainly label containers (e.g., "Used Oil,"

"Spent Solvents," "Fertilizers and Pesticides") that could be susceptible to spillage or leakage to encourage proper handling and facilitate rapid response if spills or leaks occur. I

56 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I b. Implement procedures for material storage and handling, including the use of secondary containment and barriers between material storage and traffic areas, or a similarly effective means designed to prevent the discharge of pollutants from these areas. I c. Develop and implement employee and contractor training on the procedures for expeditiously stopping, containing, and cleaning up leaks, spills, and other releases. The permittee shall conduct periodic training, no less than annually, and document the training on the Annual Report specified in paragraph B of this section. I d. Keep spill kits on-site, located near areas where spills may occur or where a rapid response can be

made. I e. Notify appropriate facility personnel when a leak, spill, or other release occurs.

f. To the extent possible, eliminate or reduce the number and amount of hazardous materials and waste by substituting non-hazardous or less hazardous materials of equal function, as determined I by the permitlee.

g. Clean up leaks, drips, and other spills without using large amounts of water or liquid cleaners. Use absorbents for dry cleanup whenever possible.

I When a leak, spill or other release occurs during a 24-hour period that contains a hazardous substance

or oil in an amount equal to or in excess of a reportable quantity established under 40 CFR Parts 110, 117 or 302, the permittee shall, in addition to the notification requirements contained in Part A 111.C.4 of I this permit, notify the National Response Center (NRC) at (800) 424-8802 in accordance with the requirements of 40 CFR Parts 110, 117, and 302 as soon as the permittee becomes aware of the discharge. I 5. Sector-and Site-Specific BMPs.

a. The permittee shall implement the BMPs in the applicable Appendix to the NP DES PAG-03 General Permit for Discharges of Stormwater Associated with Industrial Activities that is currently in effect.

I b. Delivery Vehicles.

Minimize contamination of stormwater runoff from delivery vehicles arriving at the plant site. I Implement procedures to inspect delivery vehicles arriving at the plant site as necessary to minimize discharges of pollutants in stormwater. Ensure the overall integrity of the body or container of the delivery vehicle and implement procedures to deal with leakage or spillage from delivery vehicles. I c. Fuel Oil Unloading Areas.

Minimize contamination of precipitation or surface runoff from fuel oil unloading areas. Use containment curbs in unloading areas where feasible. In addition, ensure personnel familiar with spill I prevention and response procedures are available to respond expeditiously in the event of a leak or spill during deliveries. Ensure that any leaks or spills are immediately contained and cleaned up, and use spill and overflow protection devices (e.g., drip pans, drip diapers, or other containment devices placed beneath fuel oil connectors to contain potential spillage during deliveries or from I leaks at the connectors).

d. Chemical Loading and Unloading.

I Minimize contamination of precipitation or surface runoff from chemical loading and unloading areas. Use containment curbs at chemical loading and unloading areas to contain spills, where practicable. In addition, ensure personnel familiar with spill prevention and response procedures are available to respond expeditiously in the event of a leak or spill during deliveries. Ensure leaks and spills are I immediately contained and cleaned up and, where practicable, load and unload in covered areas

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and store chemicals indoors. I

e. Miscellaneous Loading and Unloading Areas.

Minimize contamination of precipitation or surface runoff from loading and unloading areas through implementation of control measures including but not limited to the following: cover the loading area; I install grading, curbing, or berming around the loading area to divert run-on; locate the loading and unloading equipment and vehicles so that leaks are contained in existing containment and flow diversion systems; or equivalent procedures. I

f. Liquid Storage Tanks.

Minimize contamination of surface runoff from above-ground liquid storage tanks through implementation of control measures including but not limited to the following: use protective guards I around tanks; use containment curbs; install spill and overflow protection; use dry cleanup methods; or equivalent measures.

g. Oil-Bearing Equipment in Switchyards. I

Minimize contamination of surface runoff from oil-bearing equipment in switchyard areas. Use level grades and gravel surfaces to retard flows and limit the spread of spills, or collect runoff in perimeter ditches. I

D. Routine Inspections.

1. The permittee shall visually inspect the following areas and BMPs on a semiannual basis (calendar I periods), at a minimum:

a. Areas where industrial materials or activities are exposed to stormwater.

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b. Areas identified in the PPC Plan as potential pollutant sources.

c. Areas where spills or leaks have occurred in the past three years.

d. Stormwater outfalls and locations where authorized non-stormwater discharges may commingle. I

e. Physical BMPs used to comply with this permit.

I At least once each calendar year, the routine inspection must be conducted during a period when a stormwater discharge is occurring.

2. The permittee shall evaluate and document the following conditions, at a minimum, in the Annual Report I required by paragraph B of this section through required inspections:

k. Raw materials, products or wastes that may have or could come into contact with stormwater.

I. Leaks or spills from equipment, drums, tanks and other containers. I

m. Off-site tracking of industrial or waste materials, or sediment where vehicles enter or exit the site.

n. Tracking or blowing of raw, final or waste materials from areas of no exposure to exposed areas. I

o. Control measures or BMPs needing replacement, maintenance or repair.

p. The presence of authorized non-stormwater discharges that were not identified in the permit I

application and non-stormwater discharges not authorized by this permit.

E. Preparedness, Prevention and Contingency (PPC) Plan I

58 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I 1. The permittee shall develop and implement a PPC Plan in accordance with 25 Pa. Code § 91.34 following the guidance contained in DEP's "Guidelines for the Development and Implementation of Environmental Emergency Response Plans" (DEP ID 400-2200-001 ), its NP DES-specific addendum and the minimum requirements below. I a. The PPC Plan must identify all potential sources of pollutants that may reasonably be expected to

affect the quality of stormwater discharges from the facility. I b. The PPC Plan must describe preventative measures and BMPs that will be implemented to reduce or eliminate pollutants from coming into contact with stormwater resulting from routine site activities and spills. I c. The PPC Plan must address actions that will be taken in response to on-site spills or other pollution incidents.

d. The PPC Plan must identify areas which, due to topography or other factors, have a high potential I for soil erosion, and identify measures to limit erosion. Where necessary, erosion and sediment control measures must be developed and implemented in accordance with 25 Pa. Code Chapter 102 and DEP's "Erosion and Sediment Pollution Control Manual" (DEP ID 363-2134-008).

I e. The PPC Plan must address security measures to prevent accidental or intentional entry which could result in an unintentional discharge of pollutants.

f. The PPC Plan must include a plan for training employees and contractors on pollution prevention, I BMPs, and emergency response measures. This training must be conducted in accordance with paragraph C.4.c of this section.

g. If the facility is subject to SARA Title Ill, Section 313, the PPC Plan must identify releases of "Water I Priority Chemicals" within the previous three years. Water Priority Chemicals are those identified in EPA's "Guidance for the Determination of Appropriate Methods for the Detection of Section 313 Water Priority Chemicals" (EPA 833-B-94-001, April 1994 ). The Plan must include an evaluation of all activities that may result in the stormwater discharge of Water Priority Chemicals.

I h. Spill Prevention Control and Countermeasure (SPCC) plans may be used to meet the requirements

of this section if the minimum requirements are addressed. I 2. The permittee shall review and if necessary, update the PPC Plan on an annual basis, at a minimum, and when one or more of the following occur:

a. Applicable DEP or federal regulations are revised, or this permit is revised.

I b. The PPC Plan fails in an emergency.

c. The facility's design, industrial process, operation, maintenance, or other circumstances change in I a manner that materially increases the potential for fires, explosions or releases of toxic or hazardous constituents; or which changes the response necessary in an emergency.

d. The list of emergency coordinators or equipment changes.

I e. When notified in writing by DEP.

The permittee shall maintain all PPC Plan updates on-site, make the updates available to DEP upon I request, and document the updates in Annual Reports.

F. Stormwater Monitoring Requirements. I

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1. The permittee shall conduct monitoring of its stormwater discharges at the representative outfalls identified in Part A of this permit, if applicable. The permittee shall document stormwater sampling event I information and no exposure conditions for each calendar year on the Annual Report required by paragraph B of this section.

2. The permittee shall, upon written notice from DEP, install inlets, pipes, and/or other structures or devices I that are considered necessary in order to conduct representative stormwater sampling, in accordance with a schedule provided by DEP.

3. The permittee shall collect all samples from discharges resulting from a storm event that is greater than I 0.1 inch in magnitude and that occurs at least 72 hours from the previously measurable (greater than 0.1 inch rainfall) storm event. The 72-hour storm interval is waived when the preceding storm did not yield a measurable discharge, or if the permittee is able to document that a less than 72-hour interval is representative for local storm events during the sample period. I

4. The permittee shall collect all grab samples within the first 30 minutes of a discharge, unless the permittee determines that this is not possible, in which case grab samples must be collected as soon as possible after the first 30 minutes of a discharge. The permittee shall explain why samples could not be I collected within the first 30 minutes of any discharge on the Annual Report required by paragraph B of this section.

5. The permittee shall collect stormwater samples at times when commingling with non-stormwater I discharges is not occurring or at locations prior to the commingling of non-stormwater discharges, unless Part A of this permit recognizes commingling of stormwater and non-stormwater discharges.

6. In the event that stormwater discharge concentrations for a parameter exceeds the benchmark values I identified below at the same outfall for two or more consecutive monitoring periods, the permittee shall develop a corrective action plan to reduce the concentrations of the parameters in stormwater discharges. The permittee shall submit the corrective action plan to DEP within 90 days of the end of the monitoring period triggering the need for the plan, and shall implement the plan immediately upon I submission or at a later time if authorized by DEP in writing. The permittee shall, in developing the plan, evaluate alternatives to reduce stormwater concentrations and select one or more BMPs or control measures for implementation, unless the permittee can demonstrate in the plan that (1) the exceedances are solely attributable to natural background sources; (2) no further pollutant reductions are I technologically available and economically practicable and achievable in light of best industry practice; or (3) further pollutant reductions are not necessary to prevent stormwater discharges from causing or contributing to an exceedance of applicable water quality standards.

I Parameter Benchmark Value (mQ/L) Total Suspended Solids 100 Oil and Grease 5.0 Iron, Total 1.5 I pH (standard units) Between 6.0 and 9.0

IV. MACROFOULING CONTROL CHEMICALS I The permittee is authorized to use NALCO H150M macrofouling biocide ("biocide") to control the growth of clams and mussels in the facility's cooling water systems. Effluent limitations for NALCO H150M are imposed at outfalls that may be affected by the biocide including Outfalls 001, 003, 007, and 010. If another outfall is likely to be affected by the biocide, then the permittee shall 1) notify DEP in writing prior to the dosing event I for which the other outfall(s) may be affected and 2) sample effluent from those other outfalls for NALCO H 150M when those outfalls discharge from facilities that have been treated with biocide. The effluent concentration of NALCO H150M shall not be detectable in the effluent. I The biocide shall be used in accordance NALCO's directions for use:

MACROFOULING CONTROL IN RECIRCULATING AUXILIARY COOLING WATER AND WASTEWATER SYSTEMS I

60 I I I I 3800-PM-BCW0011 Rev. 212020 Permit Permit No. PA0025615 I o INITIAL DOSE: For the control of macro fouling growth such as clams, barnacles and mussels, add 0.3-2.6 fluid ounces of H 150M per 1,000 gallons of system water (2-20 ppm, 1-10 ppm a.i.). Repeat as necessary to achieve control. I " SUBSEQUENT DOSE: When control is evident, add 0.3-1.3 fluid ounces of H150M per 1,000 gallons of system water (2-10 ppm, 1-5 ppm a.i.) as needed to maintain control.

ONCE-THROUGH COOLING WATER SYSTEMS INTERMITTENT FEED I e INITIAL DOSE: When the system is noticeably fouled, add H150M at a dosage of 0.3-2.6 fluid ounces per 1,000 gallons of water (2-20 ppm, 1-10 ppm a.i.) based on system flow rates. The minimum treatment period should be 6 to 24 hours. Repeat as necessary to achieve control. I o SUBSEQUENT DOSE: When control is evident, add H150M at a dosage of 0.15-1.3 fluid ounces per 1,000 gallons of water (1-1 O ppm, 0.5-5 ppm a.i.) based on system flow rates on an as needed basis to maintain control. Frequency of feed should be tied to an in-plant monitoring program for macro I fouling growth.

ONCE-THROUGH COOLING WATER SYSTEMS CONTINUOUS FEED I " INITIAL DOSE: When the system is noticeably fouled, add H150M at a dosage of 0.15-1.3 fluid ounces per 1,000 gallons of water (1-10 ppm, 0.5-5 ppm a.i.) based on system flow rates. Continue to feed until needed control is achieved. I e SUBSEQUENT DOSE: Maintenance control can be effective through continuous feed of H150M at a dosage of0.05-0.5 fluid ounces per 1,000 gallons of water (0.4-4 ppm, 0.2-2 ppm a.i.) based on system flow rates I Efforts are to be made to minimize the use of biocide. Simultaneous multi-unit dosing of biocide is prohibited. If the biocide exhibits toxic effects in the receiving stream or otherwise impairs the receiving stream's aquatic life use, biocide use is to be terminated immediately. I DEACTIVATION: The permittee shall ensure that all biocide is deactivated/detoxified prior to discharge to an NP DES outfall. Biocide may be used to treat small subsystems of the plant without deactivation provided that the biocide is not detectable at the final point of discharge. To Deactivate: Use bentonite clay ("detoxicant") at a minimum ratio of 5 ppm clay to 1 ppm product. The detoxicant concentration in the effluent discharged from I any outfall shall not exceed 35 mg/L (maximum daily). The amount of detoxicant in a discharge is to be estimated using the feed rate and discharge flow rate if direct measurement of the detoxicant concentration at the point of discharge is not feasible. I The permittee shall submit advanced written notice to DEP at least 14 days before any large system dosings.

The amount of biocide and detoxicant used, the dates and times of biocide and detoxicant dosing, and the results of each dosing event shall be recorded and summarized in a report to the Department at the end of I eachca~ndarquarte~

V. COOLING WATER INTAKE STRUCTURE(S) I A. Nothing in this permit authorizes a take of endangered or threatened species under the Endangered Species Act.

B. Technology and operational measures currently employed at the cooling water intake structure(s) must be I operated in a way that minimizes impingement mortality and entrainment to the fullest extent possible.

C. The permittee shall not alter the location, design, construction or capacity of the intake structure(s) without prior approval of DEP. I

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D. Best Technology Available (BTA) Requirements To meet BTA requirements to minimize adverse impacts from impingement and entrainment, the permittee I

shall utilize a closed-cycle recirculating cooling system. To comply with these BTA requirements the permittee shall:

1. Operate a closed cycle recirculating system as defined at 40 CFR § 125.92(c). I

2. Monitor the actual intake flows at a minimum frequency of daily, including measurements of cooling water withdrawals, make-up water and blow down volume or alternatively monitor cycles of I concentration at a minimum frequency of daily.

3. Submit the results of monitoring in paragraph D.2 above on the Cooling Water Intake Monitoring Supplemental Report (3800-FM-BCW001 0) as an attachment to monthly DMRs. I

E. If DEP determines the methods to meet impingement and entrainment BTA requirements are not sufficient, the permittee shall employ additional controls to reduce adverse impacts from impingement and entrainment. F. The permittee shall, on an annual basis, submit a report describing any modifications to the operation of any I

unit at the facility that impacts cooling water withdrawals or operation of the cooling water intake structure(s) during a calendar year. If not applicable, the permittee shall submit a statement certifying that no modifications have occurred in lieu of a report. The annual report or statement is due by January 28 of each I year.

G. If the permittee wishes to submit a request for a reduction in permit application requirements as specified in 40 CFR § 125.95(c), the request must be submitted to DEP at least two years and six months before the I permit expiration date.

H. The permittee shall retain data and other records for any information developed pursuant to Section 316(b) of the Clean Water Act for a minimum of ten years. I

I. New Units.

The permittee must submit applicable information in 40 CFR § 122.21 (r) at least 180 days prior to the planned I commencement of cooling water withdrawals associated with the operation of a new unit (as defined in 40 CFR § 125.92(u)).

VI. WQBELs BELOW QUANTITATION LIMITS I

1. The parameter(s) listed below are subject to water quality-based effluent limits (WQBELs) in Part A of this permit that are necessary to comply with state water quality standards, but may be less than quantitation limits (Qls), as defined in 25 Pa. Code § 252.1, that are generally achievable by conventional analytical I technology. The permittee shall analyze the parameter(s) using methods that will achieve the QL(s) as listed below. For the purpose of compliance, a statistical value reported on the DMR that is less than the QL(s)

(i.e., "non-detect) will be considered to be in compliance. Parameter Name Quantitation Limit I

Mercury 0.20 µg/L

2. The permittee shall, where determined to be feasible by the permittee, achieve a QL less than the QL I identified above to improve the level of confidence that state water quality standards are being met in the receiving waters.

3. The permittee shall manage non-detect values and report statistical results to DEP in accordance with I published DMR guidance (3800-BK-DEP3047 and 3800-FS-DEP4262). Where a mixed data set exists containing non-detect results and "detected" values (i.e., results greater than or equal to the QL), the QL shall be used for non-detect results to compute average statistical results. I

62 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615

VII. AUTHORIZED NON-STORMWATER DISCHARGES I The permittee is authorized to discharge the following non-stormwater discharges from the outfalls indicated:

A. Fire Protection Water (river water) discharges from emergency or unplanned fire-fighting activities. I B. Fire Protection Water (river water), including hydrant/ line flushing, fire system testing, fire equipment testing.

C. Potable water sources including potable waterline flushing, irrigation, drainage, and lawn watering. I D. Uncontaminated condensate from air conditioners, coolers/chillers, and other compressors (if treatment

through an oil/water separator is provided) and from the outside storage of refrigerated gases or liquids. I E. Pavement wash waters where no detergents or hazardous cleaning products are used, and the waters to not come into contact with oil, grease, or sources of pollutants from industrial activities.

F. Routine external building washdown/power wash water that does not use detergents or hazardous cleaning I products.

G. Mist and ice from cooling towers that may collect on the surrounding ground, but not intentional discharges from the cooling tower. I Authorized Non-Storm Water Discharges Outfall Outfall Description (see listing above) A B C D E F G I Unit #1 and Unit #2 cooling tower blowdown; sources 001 monitored at I MPs 101, 301, 401, 601, and 701; and X X X treated radioactive waste 002 Intake screen backwash water and sources monitored X X atlMP102 I Storm water runoff; sources monitored at IMPs 103, 003 303, and 403; and intermittent non-contact cooling X X X X X X water leakage/drainage from the Unit #1 Diesel I Generator 004 Unit #1 cooling tower basin overflow X X X 006 Auxiliary intake screen backwash water X X X Auxiliary intake testing water and infrequent I 007 discharges of cooling water from the Unit #1 heat X X exchangers and chillers 008 Storm water and sources monitored at IMP 108 X X X X Once-through cooling water from the Unit #2 heat I 010 exchangers and chillers and Unit #2 service water X X X strainer backwash 011 Storm water, miscellaneous low volume waste X X X sources, and sources monitored at I MPs 111 and 211 X X X I 012 Slowdown from the HVAC unit serving the emergency X X X response facility and storm water runoff X X X

013 Storm water and sources monitored at IMP 313 and X X X sources monitored at IMP 313 X X X X I 014 Storm water X X X X X X 015 Storm water X X X X X X 016 Storm water X X X X X X 017 Storm water X X X X X X 019 Storm water X X X X X X

VIII. WATER QUALITY-BASED EFFLUENT LIMITATIONS FOR TOXIC POLLUTANTS

A. Final Water Quality Based Effluent Limitations (WQBELs)

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The final WQBELs listed below will become effective two years after the Permit Effective Date I ("WQBEL Effective Date") unless DEP issues an amendment to this permit prior to that date:

Outfall Average Maximum No. Pollutant Monthlv (mQIL) Dailv (mqll) I 001 Mercury, Total 0.012 0.019

003 Mercury, Total 0.012 0.019 I

011 Mercury, Total 0.012 0.019

These limits are necessary to achieve water quality standards in the receiving waters. The permittee has I not demonstrated the ability to achieve these limits as of the effective date of the permit. Prior to the WQBEL Effective Date, the permittee shall complete studies as described below.

B. Site-Specific Data Collection Studies I

The WQBELs were developed by DEP using the default or model-derived estimates for the parameters listed below in DEP's Toxics Management Spreadsheet {TMS). The permittee shall collect site-specific data for all of the parameters listed below and submit the data to DEP as part of a Final WQBEL Compliance Report. I

1. Discharge pollutant concentration coefficients of variability using DEP's Field Data Collection and Evaluation Protocol for Deriving Daily and Hourly Discharge Coefficients of Variation (CV) and Other Discharge Characteristics (391-2000-024 ). I

2. Background I ambient pollutant concentrations using DEP's Implementation Guidance for the Determination and Use of Background/Ambient Water Quality in the Determination of Wasteload Allocations and NPDES Effluent Limitations for Toxic Substances (391-2000-022). I

3. The acute and chronic partial mix factors for the reach of stream modeled by DEP using the TMS as determined through a mixing study that provides an estimate of mixing under design stream flow conditions. I

The permittee may, at its discretion, submit a work plan to DEP for review and comment prior to initiating the site-specific data collection studies. If the permittee decides to submit a work plan, DEP's approval is not necessary prior to commencing the studies. I

C. Toxics Reduction Evaluation {TRE)

The permittee shall conduct a TRE in accordance with DEP's Water Quality Toxics Management Strategy, I Appendix C, Permittee Guidance for Conducting a Toxics Reduction Evaluation (TRE) (361-0100-003). The permittee shall investigate and address the following as part of the TRE:

1. The source(s) of the toxic pollutants in the effluent through a comprehensive review of influent and I effluent quality and contributors to the facility, if applicable.

2. An evaluation of approaches and strategies that exist to reduce or eliminate sources in order to achieve the final WQBELs. I

3. An evaluation of approac;:hes and strategies that exist to provide treatment to achieve the final WQBELs.

4. An analysis of the feasibility of the approaches and strategies identified in paragraphs 2 and 3, above. I

The permittee shall develop a TRE work plan and submit the work plan to DEP for review and comment when requested by DEP. DEP's approval of the work plan is not necessary prior to commencing the TRE. D. Schedule and Final WQBEL Compliance Report I

64 I I I I 3800-PM-BCW0011 Rev. 2/2020 Permit Permit No. PA0025615 I 1. The permittee shall submit complete required studies and a Final WQBEL Compliance Report to DEP in accordance with the following schedule:

Action Due Date I Complete TRE Work Plan and Submit Within 3 months of the Permit Effective Date Work Plan if Requested by DEP Complete TRE and Site-Specific Data Within 15 months of the Permit Effective Date Collection I Begin Implementing Actions Identified in the TRE to Reduce Pollutant Load (if Within 15 months of the Permit Effective Date applicable) I Submit Final WQBEL Compliance Within 18 months of the Permit Effective Date Report Complete Actions Identified in TRE and Within 24 months of the Permit Effective Date Comply with Final Permit Limit I 2. The Final WQBEL Compliance Report shall consist of the following components:

a. Site-specific data collected in accordance with paragraph B, above.

I b. If the permittee is requesting a modification to the final WQBELs based on the site-specific data, the permittee shall submit: I (1) Printouts of the TMS using the site-specific data along with all other assumptions and data used by DEP to establish the final WQBELs; and

(2) An application (3800-PM-BCW0027b) to DEP for a Major Amendment to th_e permit. I c. A TRE Report including a feasibility analysis or study, if applicable.

d. An assessment of whether the permittee will be capable of achieving the final WQBELs on the I WQBEL Effective Date. The permittee shall notify DEP of one of the following conclusions:

(1) The permittee will achieve the final WQBELs on the WQBEL Effective Date. The permittee shall notify DEP of the measures that will be taken to comply. I (2) The permittee will or may be able to achieve the final WQBELs, but after the WQBEL Effective Date. The permittee shall notify DEP of its proposed alternative WQBEL Effective Date and include justification for the alternative date. I (3) The permittee will not be able to achieve the final WQBELs because all alternatives to control the toxic pollutant(s) are infeasible. I e. An application (3800-PM-BCW0027b) for a Major Amendment to the permit if the permittee concludes that it is not capable of achieving the final WQBELs on the WQBEL Effective Date or compliance is infeasible, or if the permittee believes the final WQBELs should be modified based on site-specific data. I 3. In response to the receipt of the Final WQBEL Compliance Report, DEP may:

a. Request additional research, studies or clarification if the permittee concludes that it cannot achieve final WQBELs by the WQBEL Effective Date or compliance is infeasible and DEP disagrees with I this conclusion or believes that additional efforts are necessary before reaching this conclusion. The permittee shall comply with the schedule provided by DEP in writing for such additional efforts or an alternative agreed upon schedule.

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b. Issue a draft Major Amendment to the permit that modifies the WQBELs in response to site-specific data or modifies the WQBEL Effective Date, for public comment. I

c. Deny the application for a Major Amendment to the permit or place review of the application on hold until additional research or studies requested by DEP are complete.

I

d. Notify the permittee that DEP will consider a time extension to achieve the final WQBELs under 25 Pa. Code § 95.4 for the discharge upon the receipt of a request submitted by the permittee using Form No. 3800-FM-BCW0302, if it can be demonstrated that the criteria for a time extension under

§ 95.4 are met. I

e. Notify the permittee that DEP will consider the submission of a site-specific criterion study (SSCS) to further modify WQBELs, where applicable. The permittee shall comply with the requirements set forth in DEP's notification letter for completion of a SSCS, including submission of a SSCS work I plan.

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