Text

PA NPDES Permit for LGS Amendment 4
	ML061160171
Person / Time
Site:	Limerick
Issue date:	04/14/2006
From:	Mudrick C; Exelon Generation Co, Exelon Nuclear
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	EPP 3.2, NPDES 0051926
	Download: ML061160171 (57)
	v • d • e

Exelon Nuclear www.exeloncorp.com Exellon. Nuclear Limerick G nerating Station P.O. Box 2300 Pottstown, PA 19464 EPP 3.2 April 14, 2006 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Limerick Generating Station, Units 1 and 2

Subject:

PA NPDES Permit for LGS Amendment 4 Attached is the latest NPDES Permit 0051926 Amendment 4 which is provided in accordance with the Environmental Protection Plan Section 3.2 for your information.

If you have any questions or require additional information, please do not hesitate to contact us.

Sincerely, Christopher H. Mudrick Plant Manager-LGS Exelon Generation Company, LLC

Attachment:

NPDES Permit 0051926 Amendment 4 for LGS cc: S. Collins, Administrator, Region I, USNRC S. Hansell, LGS USNRC Senior Resident Inspector c1-~~

bci: R. DeGregorio - GML 5-1 w/o attachment C. Mudrick - GML 5-1 w/o attachment R. Newmaster - SSB 2-2 w/o attachment R. Kreider - SSB 2-4 w/o attachment T. Tierney - SSB 2-2 w/o attachment M. Audette - SSB 2-2 w/o attachment T. Siglin - KSA w/o attachment J. Toro - SMB 1-2 w/o attachment D. Ney (PABRP) SSB 2-4 w/o attachment

.I 3800-PM-WSWMOOII Rev. 412005 Permit COMMONWEALTH OF PENNSYLVANIA fth 1 e* DEPARTMENT OF ENVIRONMENTAL PROTECTION W A BUREAU OF WATER SUPPLY AND WASTEWATER MANAGEMENT AUTHORIZATION TO DISCHARGE UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM DISCHARGE REQUIREMENTS FOR INDUSTRIAL WASTEWATER FACILITIES NPDES PERMIT NO: PA0051926 In compliance with the provisions of the Clean Water Act, 33 U.S.C. Section 1251 et seq. ("the Act") and Pennsylvania's Clean Streams Law, as amended, 35 P.S. Section 691.1 et seq.,

Exelon Generation Company, LLC - Client ID No. 147686 200 Exelon Way Kennett Square, PA 19348 is authorized to discharge from a facility known as Limerick Generating Station, located at 3141; Sanatoga Road, Pottstown, PA 19464, Limerick Township, Montgomery County to the Schuylkill River, Possum Hollow Run and Sanatoga Creek inWatershed 3D inaccordance with effluent limitations, monitoring requirements and other conditions set forth in Parts A, B and C hereof.

THIS PERMIT SHALL BECOME EFFECTIVE ON April 1, 2006 THIS PERMIT SHALL EXPIRE AT MIDNIGHT ON March 31, 2011 The authority granted by this permit is subject to the following further qualifications:

1. If there is a conflict between the application, its supporting documents and/or amendments and the terms and conditic ns of this permit, the terms and conditions shall apply.

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.

3. A complete application for reissuance of this permit, or notice of intent to cease discharging 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 submission at a later date), using the appropriate NPDES permit application form.

In the event that a timely and complete application for reissuance 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 vAill remain fully effective and enforceable against the discharger until DEP takes final action on the pending permit <pplication.

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

DATE PERMIT ISSUED March 24, 2006 ISSUED BY __ _ T_____

Water Mana em nt Program Manager DATE PERMIT AMENDMENT ISSUED Re 30 (CDO5WQM)256-13P Page 1 of 33

3800-PM.WSWM0011 Rev. 4/2005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS:

I. For Outfall 001 , Latitude 40013'13" , Longitude 75035'22" , River Mile Index 48.01 , Stream Code 00833 which receives wastewater from cooling towers, spray pond, holding pond, treated radwaste. laundry drain, and filter backwash.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated wastowater 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, Footnotes, and Supplemental Information on page 17).

Effluent Limitations Monitoring Requirements Mass Units lbs/day) Concentrations (mg) Minimum I';)

Discharge Parameter Monthly Daily Inst. Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (MGD) IlWeek Measured Total Suspended Solids

30 60 75 1wteek 24 Hour Comp Temperature i1oF 1/Week I-S Total Residual Oxidants 0.2 0.5 1/Week Grab pH (STD UNIT) 6.0 9.0 1/W~eek Grab Spectrus CT1300 0.2 0.4 0.5 1/week Grab Cadmium, Total Monitor Monitor Monitor 2lMonth 24 Hour Comp Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Outfall 001.

See Other Requirement No 14. to calculate TSS credit during the use of chemical additive Spectrus DT1400 in the cooling towers.

- See Other Requirement No. 8.

- - See Other Requirement No. 15.

See Other Requirement Nos. 11, 12, and 13.

Page 2 of 33

3800-PM-WSWM0011 Rev. 4/2005 Permit Permit No. PA0051926 PART A'- EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS -

I. ForIntemalMonitoringPoint201, Latitude40o13'13", Longitude 75035'22" , River Mile Index 48.01, Stream Code 00833 which receives wastewater from holding pond. The holding pond receives non-hazardous and industrial wastewater generated as Dart of routine plant operations. testing and maintenance.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and 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, Footnotes and Supplemental Information on page 17).

__ Effluent Limitations Monitorlng R quirements Mass Units (lbs/day) " Concentrations (mgIL) Minimum Discharge Parameter Monthly Daily Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (GPD) _I/Week Measured Total Suspended Solids 30 100 2/Month Grab Oil and Grease 15 20 30 2/Month Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Internal Monitoring Point 201 at holding pond.

Page 3 of 33

3800-PM-WSWM0011 Rev. 412005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS

I. For Internal Monitoring Point 301, Latitude 40013'13", Longitude 75°35'22" , River Mile Index 48.01, Stream Code 00833 which receives wastewater from radwaste treatment plant and laundrV drain collection svstem.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and 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, Footnotes and Supplemental Information on page 17).

Effluent Limitations Monitoring Requirements Mass Units lbs/day) "I Concentrations (mg/L) Minimum Discharge Parameter Monthly Daily Inst. Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (GPD) MINeek Measured Total Suspended Solids 30 100

Grab Oil and Grease 15 20 30 Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Internal Monitoring Point 301.

During discharge of wastewater from laundry drain collection system.

Page 4 of 33

3800-PM-WSWM0011 Rev. 412005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS I. For Internal Monitoring Point 401, Latitude 40o13'13', Longitude 7535'22', River Mile Index 48.01, Stream Code 00833 which receives wastewater from emergency spray pond.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and 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, Footnotes and Supplemental Infor ation on page 17).

Effluent Limitations Monitoring Requirements Discharge Parameter Mass Units Ibs/day) " Concentrations (mg/L) Minimum Monthly Daily Inst. Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (GPD) I/_Week Measured Total Phosphorus as P Monitor Monitor Monitor Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Internal Monitoring Point 401 from the emergency spray pond overflow location.

Sample shall be collected during the time of discharge through the overflow location.

Page 5 of 33

3800-PM-WSWM0011 Rev. 412005 Permit Permit No. PA0051926 PART.A -EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS: '

1. For Ouffall 002 , Latitude 40013'17" , Longitude 75035'15" , River Mile Index 0.23 , Stream Code 01640 which receives storm water from Area around former sewage treatment plant and service roads.

For Ouffall 004 , Latitude 40°13'18" , Longitude 75035'07' , River Mile Index 0.30 , Stream Code 01640 which receives storm water from Fuel storage area.

For Ouffall 022 , Latitude 40o13'12" , Longitude 75035'16' , River Mile Index 0.19 , Stream Code 01640 which receives storm water from Area around wastewater treatment plant and service roads.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated storm water 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, Footnotes, and Supplemental Information on page 17 and Other Requirement No. 6 in Part C).

Effluent Limitations Monitoring Requirements Concentrations (mgud)

Minimum Required Discharge Parameter Average Average Maximum Measurement Sample Annual Semi Annual Daily Frequency Type CBOD 5 Monitor/Report 1/Year Grab COD Monitor/Report 1WYear Grab Oil and Grease Monitor/Report 1Wear Grab pH Monitor/Report 1/Year Grab Total Suspended Solids Monitor/Report 1/Year Grab Total Kjeldahl Nitrogen Monitor/Report 1/Year Grab Total Phosphorus Monitor/Report 1/Year Grab Iron (Dissolved) Monitor/Report 1/Year Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): At least one of the above three outfalls must be sampled and others shall be inspected once a year.

Page 6 of 33

3800-PM-WSWMOOII Rev. 4/2005 Permit Permit No. PA0051926 PART A" EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING,'AND REPORTING REQUIREMENTS:

I. For Ouffall 003 Latitude 40013'17" Longitude 75035'14" w River Mile Index 0.265 , Stream Code 01640 which receives waste water from floor drains, chiller waste water from condenser boxes associated with turbine unit 1. and stormwater from area around the unit.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and 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, Footnotes, and Sunnlemental Information on nane 17).

_ __Effluent Limitations Monitoring R quirements Discharge Parameter Mass Units Ibslday) " Concentrations (mgIL) Minimum Monthly Daily Instantaneous Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (MGD) Calculated Total Suspended Solids Monitor Monitor Monitor Grab Temperature 110°F I-S Total Residual Oxidants 0.2 0.5

Grab pH (STD UNIT) 6.0 9.0 Grab Spectrus CT1300 0.2 0.4 0.5 Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Outfall 003.

Sample during discharge through drain valve associated with the circulating water pumps.

Page 7 of 33

3800.PM-WSWMOOII Rev. 4/20o5 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS - ::

1. For Ouffall 005 , Latitude 40°13'19" , Longitude 75035b05" , River Mile Index 0.36 , Stream Code 01640 which receives waste water from floor drains, chiller waste water from condenser boxes associated with turbine unit 2, and stormwater from area around the unit.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and 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, Footnotes, and Supplemental Infor ation on page 17).

Effluent Limitations Monitoring R quirements Discharge Parameter Mass Units (Ibs/day) Concentrations (mg/L) Minimum(a 9 Monthly Daily Instantaneous Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (MGD) Calculated Total Suspended Solids Monitor Monitor Monitor . Grab Temperature _O 11_ I-S Total Residual Oxidants 0.2 0.5 Grab pH (STD UNIT) 6.0 9.0 Grab Spectrus CT1300 . 0.2 0.4 0.5 Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Outfall 005.

Sample during discharge through drain valve associated with the circulating water pumps.

Page 8 of 33

3800-PM-WSWMOOII Rev.412005 Permit Permit No. PA0051926 PART A'- EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS "' -

-i. ror Oudfaii 006 , Latitude 40Ui;326A , Longitude 75"3522' , River Mile Index 48.114 , Stream Code 00833 which receives storm water from Maintenance area of metal shop and hardware.

For Ouffall 007 , Latitude 40°13'27" , Longitude 75035'22" , River Mile Index 48.26 , Stream Code 00833 which receives storm water from Area around health physics building, hardware shop, and offices.

For Outfall 008 , Latitude 40013'28" , Longitude 75O35'23" , River Mile index 48.322 , Stream Code 00833 which receives storm water from Area around health physics building and electrical substation.

For Ouffall 009 , Latitude 40013'29" , Longitude 75035'25" , River Mile Index 48.341 , Stream Code 00833 which receives storm water from Area around control building, instrumentation shop, and storage.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated stormwater 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, Footnotes, and Supplemental Information on page 17 and Other Requirement No. 6 in Part C).

Effluent Limitations Monitoring Requirements Concentrations (mg/1)

Minimum Required Discharge Parameter Average Average Maximum Measurement Sample Annual Semi Annual Daily Frequency Type CBOD 5 Monitor/Report 1/Year Grab COD _ _ ___ _ Monitor/Report 1Wear Grab Oil and Grease Monitor/Report 1/Year Grab pH Monitor/Report 1WYear Grab Total Suspended Solids Monitor/Report 1/Year Grab Total Kieldahl Nitrogen Monitor/Report 1/Year Grab Total Phosphorus Monitor/Report 1/Year Grab Iron (Dissolved) Monitor/Report 1/Year Grab samples aqbend o e shallbei"nse ct edlls ae roust sampled and other-, shall be inspected once a year.

Page 9 of 33

3800-PM-WSWM0011 Rev. 442005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS

1. For Ouffall 010 , Latitude 40013'1 5" , Longitude 75°35'22' , River Mile Index 48.114 , Stream Code 00833 which receives waste water from Schuylkill River intake water through makeup header drain.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated waste water 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, Footnotes, and Supplemental Informnation on page 17).

c. This discharge shall consist solely of Schuylkill River water from the makeup header drain.

NO MONITORING REQUIRED Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Not monitored.

Page 10 of 33

3800.PM-WSWM0011 Rev. 412005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS

1. For Outfall 011 , Latitude 40013'15" , Longitude 75o35'23' , River Mile Index 48.17 , Stream Code 00833 which receives waste water from Intake screen backwash, Schuylkill River pump house pipe leakage, pump cooling water, and air compressor's condensate.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated waste water 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, Footnotes, and Supplemcntal Information on page 17).

c. Debris collected on the intake trash racks shall not be returned to the Schuylkill River.

NO MONITORING REQUIRED Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Not monitored Page 11 of 33

3800.PM-WSWM0011 Rev. 4/2005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS '.: - !

1. For Ouffall 012 , Latitude 40013'15" , Longitude 75035'23f , River Mile Index 48.06 , Stream Code 00833 which receives waste water from The dredging operation of the Schuylkill River Pump House and stormwater from service roads.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and 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, Footnotes, and Supplemental Information on page 17 and Other Requirement No. 6 in Part C).

Effluent Limitations Monitoring Requirements Concentrations (mgIl)

Minimum Required Discharge Parameter Average Average Maximum Measurement Sample Annual Semi Annual Daily Frequency Type Flow (MGD) Monitor/Report Monitor/Report Estimated Oil and Grease Monitor/Report Monitor/Report Grab Monitor/Report Monitor/Report Grab Total Suspended Solids (3rd Year to 5th Year) Monitor/Report 100 Composite Iron, Total (3rd Year to 5th Year) Monitor/Report 7.0 Composite Iron, Dissolved Monitor/Report Monitor/Report Composite Total Suspended Solids (1st &2n Monitor/Report Monitor

Composite Years)

Iron, Total (1st &2`4 Years) Monitor/Report Monitor Composite Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Outfall 012

The Outfall shall be monitored daily during discharge from the dredging operation. A composite sample means a composite sample collected during dredging.

Page 12 of 33

3800-PM-WSWMOOII Rev. 4/2005 Permit Permit No. PA0051926 PART A':- EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS

1. For Ouffall 013 , Latitude 40013'29" , Longitude 75°35'05" , River Mile Index 0.34 , Stream Code 01640 which receives storm water from Service roads and parking lots.

For Ouffall 014 , Latitude 40°13'26" , Longitude 75°34'59" , River Mile Index 0.378 , Stream Code 01640 which receives storm water from Service roads and parking lots.

For Ouffall 015 , Latitude 40°13'27" , Longitude 75034'59" , River Mile Index 0.40 , Stream Code 01640 which receives storm water from Service roads and parking rots.

For Ouffall 016 , Latitude 40°13'28" , Longitude 75034'51" River Mile Index 0.435 , Stream Code 01640 which receives storm water from Service roads and parkinq lots.

For Ouffall 017 , Latitude 40°113'29" , Longitude 75033'52" , River Mile Index 0.473 , Stream Code 01640 which receives storm water from Cooling towers drift loss, cooling towers screen wash, and acid/chlorination storage area For Ouffall 018 , Latitude 40013'30" , Longitude 75034953' , River Mile Index 0.51 , Stream Code 01640 which receives storm water from Yard drains For Ouffall 019 , Latitude 40013'34" , Longitude 75034'46" , River Mile Index 0.57 , Stream Code 01640 which receives storm water from Service roads and parking lots. -

For Ouffall 030 , Latitude 40°20'00" , Longitude 75037'34" , River Mile Index 0.23 , Stream Code 01641 which receives storm water from Yard drains

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated stormwater 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, Footnotes, and Supplemental Information on page 17 and Other Requirement No. 6 in Part C).

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): At least one of these outfalls must be sampled and others shall be inspected once a year.

Page 13 of 33

3800-PM-WSWM0011 Rev. 412005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS.:

1. For Ouffall 021 , Latitude 40113'37" , Longitude 75°35'25" , River Mile Index 48.38 , Stream Code 00833 which receives storm water from Cooling towers' drift loss, cooling towers screen wash, and acid/chlorine storaae area.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated storm water 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, Footnotes, and Supplemental Information on page 17 and Other Requirement No. 6 in Part C).

Effluent Limitations Monitoring Requirements Concentrations (mgl)

Minimum Required Discharge Parameter Average Average Maximum Measurement Sample Annual Semi Annual Daily Frequency Type CBODs Monitor/Report 1/ear Grab COD . Monitor/Report 1/Year Grab Oil and Grease . Monitor/Report 1/Near Grab pH Monitor/Report 1/Year Grab Total Suspended Solids Monitor/Report 1/Near Grab Total Kjeldahl Nitrogen Monitor/Report 1/ear Grab Total Phosphorus Monitor/Report 1/ear Grab Iron (Dissolved) Monitor/Report 1/Year G Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Outfall 021 Page 14 of 33

3800-PM-WSWMOO1I Rev. 4/2005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS' i-For Ouffall 020 , Latitude 40013'29" Longitude 75034'50" River Mile Index 0.436 9 Stream Code 01640 which receives wastewater from Perkiomen Creek Makeup Storage Tank.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and 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, Footnotes and Suanlemental Information on naae 17).

Effluent Limitations MoioigRequirements Dish Para t Mass Units lbs/day) t" Concentrations (mg/L) Minimum 3 '

scharge arameter Monthly Daily Instantaneous Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (MGD) Calculated Total Suspended Solids Monitor 100 I Grab pH (STD UNIT) 6.0 _ _ 9.0 Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Outfall 020.

Daily during discharge.

Page 15 of 33

3800-PM-WSWM0011 Rev. 412005 Permit Permit No. PA0051926 PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMENTS:-

For Ouffall 023 , Latitude 4001311j , Longitude 75035'17" , River Mile Index 0.15 , Stream Code 01640 which receives waste water from cooling towers' emeraency overflow vent.

a. The permittee is authorized to discharge during the period from issuance through expiration

b. Based on the production data and anticipated wastewater characteristics and flows described in the permit application and its supporting documents andlor amendments, the following effluent limitations and monitoring requirements apply (see also Additional Requirements, Footnotes and Supplemental Information on page 17).

Effluent Limitations M i Requirements Dischare Parameter Mass Units Ibsiday) "I Concentrations (mg/L) Minimum "I rgMonthly Daily Monthly Daily Instantaneous Measurement Required Average Maximum Minimum Average Maximum Maximum (2) Frequency Sample Type Flow (MGD) Measured Total Suspended Solids ** Monitor 100 Monitor

Grab Total Residual Oxidants 0.2 0.5 Grab pH (STD UNIT) 6.0 9.0

Grab Spectrus CT1300 0.2 0.4 0.5 . Grab Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): Outfall 023.

Sample during discharge from Outfall 023.

- See Other Requirement No. 14 to calculate TSS credit during the use of chemical additive Spectrus DT1400 in the cooling towers.

Page 16 of 33

3800.PM-WSINM0011 Rev. 412005 Permit No. F'A0051926 Permit PART A - EFFLUENT LIMITATIONS, MONITORING, RECORDKEEPING, AND REPORTING REQUIREMEENTS (Con't) .

Additional Requirements

c. All discharges of floating materials, oil, grease, scum, sheen and substances which produce color, tastes, odors, turbidity or settle to form deposits shall be controlled to levels which will not be inimical or harmful to the water uses to be protected or to human, animal, plant or aquatic life.

Footnotes (1) When sampling to determine compliance with mass effluent limitations, the discharge flow at the time of sampling must be measured and recorded.

(2) The Instantaneous Maximum Discharge Limitations are for compliance use by DEP only. Do not report instantaneous maximums on DMRs or supplemental DMRs unless specifically required on those forms to do so.

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

Supplemental Information (1) The effluent limitations for the Outfall 001 were determined using an effluent discharge of 10.7 million gallons per day.

Page 17 of 33

3800-PM-WSWMOO1I Rev. 412005 Permit No. PA0051926 Permit

11. DEFINITIONS At Outfall (XXX) means a sampling location in outfall line XXX below the last point at which wastes are added to outfall line (XXX), or where otherwise specified.

Average refers to the use of an arithmetic mean, unless otherwise specified in this permit.

Best Management Practices ("BMPs") means schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution to surface waters of the Commonwealth. BMPs also include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage.

Bypass means the intentional diversion of waste streams from any portion of a treatment facility.

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

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 each obtained at 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.

Composite Sample (for GC/MS volatile organic analysis) consists of at least four aliquots or grab samples collected during the sampling event (not necessarily flow proportioned). The samples must be combined in the laboratory immediately before analysis and then one analysis is performed.

Daily Average Temperature means the average of all temperature measurements made, or the mean value plot 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 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 average measurement of the pollutant over the day.

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 results by the permittee.

Estimated Flow means any method of liquid volume measurement based on a technical evaluation of the sources 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.

Grab Sample means an individual sample of at least 100 milliliters collected at a randomly selected time over a period not to exceed 15 minutes.

Hazardous Substance means any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act.

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

Page 18 of 33

3800.PM.WSVMOO1 Rev. 412005 Permit No. PA0051926 Permit Maximum Any Time or Instantaneous Maximum means the level not to be exceeded at any time in any grab sample.

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.

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.

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.

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 by delay; in production.

Storrnwater means the runoff from precipitation, snow melt runoff, and surface runoff and drainage.

Storn-water Associated with Industrial Activity means the discharge from any conveyance which is used for collecting and conveying stormwater and which is directly related to manufacturing, processing, or raw materials storage areas as defined at 40 CFR 122.26(b)(14).

Total Dissolved Solids means the total dissolved (filterable) solids as determined by use of the method specified in 40 CF:R 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 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.

Ill. SELF-MONITORING, REPORTING, AND RECORDS KEEPING A. Representative Sampling

1. Samples and measurements taken for the purpose of monitoring shall be representative of -:he monitored activity.

2. Records Retention 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 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. The 3-year period shall be extended as requested by DEP or the EPA Regional Administrator.

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3800-PM-WSWMOO1I Rev. 42005 Permit No. PA0051926 Permit

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

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.

f. The results of such analyses.

4. Test Procedures 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),

relating to environmental laboratory accreditation. Unless otherwise specified in this permit, the test procedures for the analysis of pollutants shall be those approved under 40 CFR Part 136 (or in the case of sludge use or disposal, approved under 40 CFR Part 136, unless otherwise specified in 40 CFR Part 503),

or alternate test procedures approved pursuant to those parts, unless other test procedures have been specified in this permit.

5. Quality/Assurance/Control In an effort to assure accurate self-monitoring analyses results:

a. The permittee, or its designated laboratory, shall participate in the periodic scheduled quality assurance inspections conducted by DEP and EPA.

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.

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.

2. Unless instructed otherwise in PART C of this permit, a properly completed DMR must be received by the following address within 28 days after the end of each monthly report period:

Department of Environmental Protection Delaware River Basin Commission Water Management Program Operations Branch 2 East Main Street P.O. Box 7360 Norristown, PA 19401 West Trenton, NJ 08628

3. The completed DMR Form shall be signed and certified either by the following applicable person, as defined in 40 CFR §122.22(a), or by that person's duly authorized representative, as defined in 40 CFR

§122.22(b):

- For a corporation - by a principal executive officer of at least the level of vice president, or an 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 elected official.

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3800-PM-WSVWMOO1 Rev. 412005 Permit No. PA0051926 Permit If signed by a person other than the above, written notification of delegation of DMR signatory authority must be submitted to DEP in advance of or along with the relevant DMR form.

4. If the permittee monitors any pollutant, using analytical methods described in PART A III.A.4 herein, more frequently than the permit requires, the results of this monitoring shall be incorporated, as appropriate, into the calculations used to report self-monitoring data on the DMR.

C. Reporting Requirements

1. Planned Changes - The permittee shall give notice to DEP as soon as possible of any planned physical alterations or additions to the permitted facility. Notice is required only 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).

b. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which are subject neither to effluent limitations in this permit, nor to notification requirements under 40 CFR §1 22.42(a)(1).

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 approved land application plan.

2. Anticipated Noncompliance The permittee shall give advance notice to DEP of any planned changes in the permitted fac lity or activity that may result in noncompliance with permit requirements.

3 Unanticipated Noncompliance or Potential Pollution Reporting

a. The permittee shall report any noncompliance, accident or incidents causing or threatening pollution pursuant to 25 Pa. Code §91.33 to DEP by telephone immediately giving the location and nature of the danger and, if reasonably possible to do so, to notify known downstream users of the waters.

b. The permittee 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 addition, within 15 days from the incident, shall remove any residual substances from the ground and affected waters to the extent required as stated in Title 25 Pa. Code §91.33.

c. A written submission shall also be provided within 5 days of the time the permittee becomes aware of any noncompliance or incident causing or threatening pollution. The written submission shall contain a description of the noncompliance and its cause; the period of noncompliance, including the exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is. expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.

d. DEP may waive the written report on a case-by-case basis for reports under paragraph C.3.c of this section if the oral report was received immediately and no adverse impact has been reported.

4 Other Noncompliance The permittee shall report all instances of noncompliance not reported under paragraph C.3.a of this section, at the time DMRs are submitted. The reports shall contain the information listed in pa'agraph C.3.c of this section.

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3800-PM-WSWM0011 Rev. 412005 Permit No. PA0051926 Permit 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:

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."

a. One hundred micrograms per liter.

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

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

d. One milligram per liter for antimony.

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

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 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":

a. Five hundred micrograms per liter.

b. One milligram per liter for antimony.

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

d. Any other notification level established by DEP.

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3800-PM-WSWVM0011 Rev. 412005 Permit No. F'A0051926 Permit FPART B_

1. MANAGEMENT REQUIREMENTS A. compliance Schedules

1. The permittee shall achieve compliance with the terms and conditions of this permit within the time frames specified in this permit.

. 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.

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 Title 25 Pa. Code Chapter 92.

2. The filing of a request by the permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance, does not stay any permit condition.

3. In the absence of DEP action to modify or revoke and reissue this permit, the permittee shall comply 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.

C. Duty to Provide Information

1. The permittee shall furnish to DEP, within a reasonable time, any information which DEP rrmay request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit, or to determine compliance with this permit.

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

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.

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 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 oDeration 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.

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.

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3800-PM-WSWM0011 Rev. 412005 Permit No. PA0051926 Permit F. Bypassing

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 subject to the reporting and notification requirements of Part A.lil.C.4.

(Other Noncompliance).

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

a. A bypass is unavoidable to prevent loss of life, personal injury, or "severe property damage."

b. There are no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, 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.

c. The permittee submitted the necessary reports required under F.4.a. and b. below.

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.

4. Notice

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.

b. Unanticipated Bypass - The permittee shall submit notice of an unanticipated bypass as required in PART A.lll.C.3. (Unanticipated Noncompliance or Potential Pollution Reporting) and other bypass as required by C.4. (Other Noncompliance).

II. PENALTIES AND LIABILITY A. Violations of Permit Conditions 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).

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 and/or civil penalties as set forth in Sections 602, 603, and 605 of the Clean Streams Law.

B. Falsifying Information The Clean Water Act provides that 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

- 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),

shall, upon conviction, be punished by a fine and/or imprisonment as set forth in 18 P.S. §4904 and 40 CFR

§122.41()(5) and (k) (2).

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3800-PM-WSWM0011 Rev. 4/2005 Permit No. PA0051926 Permit C. L ability 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 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 the Clean Water Act and the Clean Streams Law.

D. Need to Halt or Reduce Activity Not a Defense 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.

111. OTHER RESPONSIBILITIES A. Right of Entry Pursuant to Sections 5(b) and 305 of Pennsylvania's Clean Streams Law, Title 25 Pa. Code Chapter 92 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;

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;

2. To have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit;

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

practices or operations regulated or required under this permit; and

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 pararieters at any location.

B. Transfer of Permits

1. Transfers by modification. Except as provided in paragraph 2 of this section, a permit may be transferred 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.

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 paragraph 2.b of this section;

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; and

c. If 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 mentioned in paragraph 2.b of this section.

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3800-PM-WSWMOOII Rev. 412005 Permit No. PA0051926 Permit

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

C. Property Rights The issuance of this permit does not convey any property rights of any sort, or any exclusive privilege.

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 and obtain a new permit.

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

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3800-PM-WSWVMOOII Rev. 412005 Permit No. FA0051926 Permit PART C I. OTHER REQUIREMENTS

1. If, at anytime, DEP determines that the discharge permitted herein creates a public nuisance or causes environmental harm to the receiving water of the Commonwealth, DEP may require the permittee to adopt such remedial measures as will produce a satisfactory effluent. If the permittee fails to adopt such remedial measures within the time specified by DEP, the right to discharge herein granted shall, upon notice by DEP, cease and become null and void.

2. 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, or by EPA for this type of industry, and if such standard or limitation is more stringent than the corresponding conditions of this permit (or if it controls pollutants not covered by this permit). then DEP reserves the right to modify, or to revoke and reissue the permit to conform with that standard or limitation.

3. If there is a change in ownership of this facility or in permittee name, an application for transfer of permit must be submitted to DEP.

4. Collected screenings, slurries, sludges, and other solids shall be handled and disposed of in compliance with 25 Pa. Code, Chapters 287, 288, 289, 291, 297, and 299 (relating to permits and requirements for landfilling, land application, incineration, and storage of residual waste), Chapters 262, 263, and 264 (related to permits and requirements for landfilling and storage of hazardous sludge) and applicable Federal Regulations, the Federal Clean Water Act, RCRA, and their amendments.

5. DEP may identify and require certain discharge specific data to be submitted before the expiration date of this permit. Upon notification by DEP, the permittee will have 12 months from the date of the notice to provide the required data. These data, along with any other data available to DEP, will be used in completing the Watershed TMDLJWLA Analysis and in establishing discharge effluent limits.

6. REQUIREMENTS APPLICABLE TO STORMWATER OUTFALLS A. Prohibition of Non-stormwater Discharges

1. Except as provided in A.2, all discharges to stormwater Outfalls shall be composed entirely of non-polluting stormwater.

2. The following non-polluting water discharges may be authorized, provided the discharge is in compliance with D.2.b: discharges from fire fighting activities; fire hydrant flushings, potable water sources, including waterline flushings, irrigation drainage, lawn watering, routine external building washdown which does not use detergents or other compounds, pavement washwaters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used, air conditioning condensate, springs, uncontaminated groundwater, and foundation or footing drains where flows are not contaminated with process materials sich as solvents.

B. Spills This permit does not authorize the discharge of any polluting substances resulting from an on-site spill. Such spills shall be controlled through proper implementation of a Preparedness, Prevention, and Contingency (PPC) Plan as stated in Section D below.

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3800-PM-WSWMOO11 Rev.4/2005 Permit No. PA0051926 Permit C. This permit does not authorize any discharge (stormwater or non-stormwater) containing any pollutant that may cause or contribute to an impact on aquatic life or pose a substantial hazard to human health or the environment due to its quantity or concentration.

D. Preparedness, Prevention, and Contingency Plans

1. Development of Plan Operators of facilities shall have developed a PPC Plan in accordance with 25 Pa. Code Section 91.34 and the 'Guidelines for the Development and Implementation of Environmental Emergency Response Plans." The PPC Plan shall identify potential sources of pollution that may reasonably be expected to affect the quality of stormwater discharges from the facility. In addition, the PPC Plan shall describe the BMPs that are to be used to reduce the pollutants in stormwater discharges at the facility ensuring compliance with the terms and conditions of this permit. The PPC Plan shall be completed within 90 days from the permit effective date.

2. Non-stormwater Discharges

a. The PPC Plan shall contain a certification that the discharge has been tested or evaluated for the presence of non-stormwater discharges. The certification shall include the identification of potential significant sources of non-stormwater at the site, a description of the results of any test and/or evaluation for the presence of non-stormwater discharges, the evaluation criteria or testing methods used, the date of any testing and/or evaluation, and the on-site drainage points that were directly observed during the test. Such certification may not be feasible if the facility operating the stormwater discharge does not have access to an outfall, manhole, or other point of access to the ultimate conduit that receives the discharge. In such cases, the source identification section of the PPC Plan shall indicate why the certification was not feasible. A discharger that is unable to provide the certification must notify DEP within 90 days of the effective date of this permit.

b. Except for flows from fire fighting activities, sources of non-stormwater listed in A.2. (authorized non-stormwater discharges) that are combined with stormwater discharges must be identified in the Plan. The Plan shall identify and ensure the implementation of appropriate pollution prevention measures for the non-stormwater component(s) of the discharge.

3. Special Requirements for SARA Title IlIl, Section 313 Facilities

a. Facilities subject to SARA Title IlIl, Section 313 shall include in the PPC Plan a description of releases to land or water of Section 313 water priority chemicals that have occurred within the last three years. Each of the following shall be evaluated for the reasonable potential for contributing pollutants to runoff:

loading and unloading operations, outdoor storage activities, outdoor manufacturing or processing activities, significant dust or particulate generating process, and on-site waste disposal practices. Factors to consider include the toxicity of chemicals; quantity of chemicals used, produced or discharged; the likelihood of contact with stormwater; and history of significant leaks or spills of toxic or hazardous pollutants.

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3800-PM.WSWMOOII Rev.412005 Permit No. 1A0051926 Permit

b. Engineering Certification. No stormwater PPC Plan for facilities subject to SARA Title ll, Section 313 requirements for chemicals that are classified as "Section 313 water priority chemicals" shall be effective unless it has been reviewed by a Registered Professional Engineer and certified to by such Professional Engineer. A Registered Professional Engineer shall recertify the PPC Plan every year thereafter. This certification may be combined with the required annual evaluation in D.4. By means of these certifications, the engineer, having examined the facility and being familiar with the provisions of this part, shall attest that the storm water PPC Plan has been prepared in accordance with good engineering practices. Such certification shell in no way relieve the owner or operator of a facility covered by the PPC Plan of the duty to prepare and fully implement such Plan.

4. Comprehensive Site Compliance Evaluations and Recordkeeping Qualified personnel shall conduct site compliance evaluations at least once a year. Such evaluations shall include:

a. Visual inspection and evaluation of areas contributing to a stormwa ter discharge for evidence of, or the potential for, pollutants entering the drainage system.

Measures to reduce pollutant loadings shall be evaluated to determine whether they are adequate and properly implemented in accordance with the terms of the permit or whether additional control measures are needed. Structu al stormwater management measures, sediment and erosion control measures, and other structural pollution prevention measures identified in the Plan shall be observed to ensure that they are operating correctly. A visual inspection of equipment needed to implement the Plan, such as spill response equipment, shall be made.

b. Based on the results of the inspection, the description of potential pollutant sources identified in the PPC Plan, and pollution prevention measures and controls identified in the Plan shall be revised as appropriate within 15 days of such inspection and shall provide for implementation of any changes to the Plan in a timely manner, but in no case more than 90 days after the inspection.

c. A report summarizing the scope of the inspection, using DEP's Annual Inspection form shall be completed and made available upon request and retained as part of the PPC Plan for at least one year after coverage under this permit terminates.

E. Stormwater Management Best Management Practices (BMPs)

The permittee shall implement at least the following BMPs:

Manage sludge in accordance with all applicable permit requirements; temporarily collect and store sludge in enclosed containers or tanks.

1. Store chemicals in secure and covered areas on impervious surfaces away from storm drains.

2. For new facilities and improvements: Design wastewater treatment facilities to prevent runoff and avoid storm water commingling with sanitary wastewater.

3. Efficiently use herbicides for weed control; where practicable, investigate use of the least toxic herbicides; do not apply during windy conditions.

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3800-PM-WSWMOO1I Rev. 4/2005 Permit No. PA0051926 Permit

4. Do not wash parts or equipment over impervious surfaces that wash into storm drains.

5. Conduct Good Housekeeping Practices.

6. Implement infiltration techniques, including infiltration basins, trenches, dry wells, porous pavements, etc., wherever practicable.

F. Stormwater Sampling and Reporting

1. If stormwater samples are required by this permit, they shall be collected as grab samples during the first 30 minutes, but no later than one-hour of the discharge resulting from a storm event that occurs at least 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the previously measurable storm event.

2. When the discharger is unable to collect samples due to adverse climatic conditions, the discharger must submit, in lieu of sampling data, a description of why samples could not be collected, including available documentation of the event. This sampling waiver may not be used more than once during a two-year period.

3. Stormwater monitoring results shall be summarized on a DMR form and DEP's "Additional Information for the Reporting of Stormwater Monitoring" form.

4. When a facility has two or more outfalls that may reasonably be believed to discharge substantially identical effluents, based on a consideration of features and activities within the area drained by the outfall, the permittee may sample one such outfall and report that the quantitative data also applies to the substantially identical outfalls.

7. Laboratory Certification The Environmental Laboratory Accreditation Act of 2002 requires that all environmental laboratories register with DEP. An environmental laboratory is any facility engaged in the testing or analysis of environmental samples required by a statute administered by DEP relating to the protection of the environment or of public health, safety, and welfare.

8. The following requirements apply with respect to the thermal impact of the discharge from Outfall 001 upon Schuylkill River:

No rise when ambient temperature is 87*F or above; not more than a 5*F rise above ambient temperature until stream temperature reaches 87"F; not to be changed by more than 2"F during any one-hour period.

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3800-PM.WSWM0011 Rev. 412005 Permit No. PA0051926 Permit

9. The additives and usage rate currently approved are the following:

Usage Rate (Ibs/day)

Name Averaae Monthly Maximum Daily Betz Dearborn Flogard MS6210 400 550 Betz

Dearborn Depositrol BL5307 100 3,

000 Betz Dearborn Depositrol BL5400 150 320 Betz

Dearborn Depositrol PY5204 1,

450 2,850 Betz

Dearborn Spectrus BD1500 932 5,

000 Betz Dearborn Spectrus CT1 300 2525 Betz

Dearborn Spectrus DT1400 42 9,

000 Betz Dearborn Spectrus NX 100 1.0 2.0 Betz Dearborn Spectrus NX1 103 20 120 Betz Dearborn Klaraid CDP1346 60 120 Betz Dearborn Continuum AEC3120 7.0 14.0 Betz

Dearborn Inhibitor AZ8104 300 1,

415 Betz Dearborn Ferroquest LP7200 600 600 Betz Dearborn Ferroquest LP7202 300 300 Betz Dearborn Foamtrol AF1441 400 900 Betz Dearborn Sodium Hypochlorite Total Residual Oxidants limit of 0.2 governs.

Betz Dearborn Sulfuric Acid 66BE CMD Limit for pH governs it's usage rate.

Betz Dearborn Sodium Bromide CMD Total Residual Oxidants limit of 0.2 governs.

Betz Dearborn Polyfloc AP1 120 0.22 0.9 AB Aquashade 30 gallons every six weeks General Chemical Sodium Sulfite 21 21 FMC Trisodium Phosphate 51 51 FMC Disodium Phosphate 51 51 Betz Dearborn Kleen AC9500 300 450

10. Chemical additives to control corrosion, scaling, algae, slime, fouling or oxygen, etc., and blowdown discharge rates shall be managed by the permittee to ensure that toxic effects in the receiving stream are prevented. These also include substances/compounds added to the wastewater such as polymers, water softeners, flocculents, coagulants, emulsion breakers, dispersants and oxygen scavengers.

Usage rates shall be consistent with the quantities and rates approved by the DEP and shall be limited to the minimum amount necessary to accomplish the intended purposes of chemical addition.

Accurate usage records (name of additive, quantity added, and date added) of any approved chemical additive and blowdown discharge volumes must be maintained on the Chemical Additive Reporting form and kept on site by the permittee. To the maximum extent possible, sampling and laboratory analytical procedures for these chemicals are to conform with the 'Sampling and Analytical Testing Instructions for Industrial Discharges" routinely used for completion of NPDES permit applications.

Whenever a change in chemical additive or increase in usage rates is desired by the permittee, a written notification shall be submitted to the DEP at least sixty (60) days prior to the proposed use of the chemical. All required data must be provided on the form for each new or changed chemical additive or proposed change in the usage rate.

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3800-PM-WSWMOOII Rev. 412005. Permit No. PA0051926 Permit As a minimum, the following information must be provided on the whole product (if data on the whole product is not available, monitoring data for all active ingredients in the product shall be provided):

1. Trade names of additive.

2. Name and address of additive manufacturer.

3. Material Safety Data Sheet (MSDS) or other available information on mammalian or aquatic toxicological effects.

4. Bioassay data including the 96-hour LC50 on the whole product.

5. Proposed average and maximum additive usage rates in lbs/day.

6. A flow diagram showing the point of chemical addition and the affected outfalls.

7. The expected concentration of the product at the final outfall.

8. The product density for liquids (lb/gal) used to convert usage rate (gpd) to in-system concentrations (mg/I).

9. The analytical test method that could be used to verify final discharge concentrations when the product is in use and the associated minimum analytical detection level (mg/l).

10. Conditioned water discharge rate (blowdown rate) and duration (hours).

11. Available data on the degradation of or decomposition of the additive in the aquatic environment.

12. Any other data or information the permittee believes would be helpful to the DEP in completing its review.

Based on the information presented, the DEP will decide whether specific effluent limitations for one or:

more active ingredients or other control requirements are necessary. Where necessary, the DEP may establish permit limits, require other controls or deny use of these chemicals. If the information is complete, use of the proposed chemical additive or usage rate will be considered approved 60 days after the date of notification to the DEP. If the notification is incomplete or the DEP notifies the permittee that the proposed usage rate will cause violations of water quality standards, the permittee will be advised that a permit amendment is required and would likely be denied. All such letters and notifications must be kept on site with the required daily chemical usage data.

Use of products or chemicals that contain one or more ingredients that are carcinogens is generally prohibited. Before proposing limited use of such products or chemicals, the permittee must thoroughly investigate the use of alternative products or chemicals to avoid the use of the carcinogens. If no alternatives are available, the permittee must submit written documentation as part of the information required above, that demonstrates to the satisfaction of the DEP that no suitable alternatives are available and that any carcinogen in the proposed chemical or product will not be detectable in the final effluent using the most sensitive analytical method available. Based on the information presented, the DEP will decide whether specific effluent limitations or other control requirements are necessary for the chemicals, and where necessary, establish permit limits require other controls or deny use of these chemicals.

11. The term total residual oxidants for water with bromides generated through the use of a chemical additive is defined as the value obtained using the amperometric method for total residual chlorine as described in 40 C.F.R. Section 136. This method is described in Standard Methods as the 'amperometric titration method".

Page 32 of 33

3800-PM.WSVIMOOII Rev. 4/2005 Permit No. PA0051926 Permit

12. The term Maximum Daily Concentration, as it relates to total residual oxidants (TRO) discharge, means the average analysis made over a single period of TRO release which does not exceed two hours.

13. For Ouffall 001, total residual oxidants may not be discharged from any unit for more than two hours in any one day and not more than one unit in any plant may discharge total residual oxidants al any one time unless the permittee can demonstrate to the Department that the units in a particular location can not operate at or below this level of oxidants.

14. The permittee is allowed to take credit for total suspended solids during the use of Spectrus DT1400 in the cooling towers. The worksheet attached to the permit shall be used to calculate credits for total suspended solids and a copy of such determination shall be submitted with the Discharge M:nitoring Report.

15. Outfall 001 shall be sampled and analyzed for Spectrus CT1 300 on a weekly basis, with daily record keeping of the usage rates during use of the product. Methyl Orange method shall be used with a detection level of 0.2 mg/l.

16. There shall be no discharge of polychlorinated biphenyl (PCB) compounds such as those commonly used for transformer fluid at any time.

17. Water borne releases of radioactive material to unrestricted areas shall conform to criteria set forth in Title 10 Code of Federal Regulations 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.

The facility operator shall provide the DEP with copies of reports specifying the quantities of radioactive material released to unrestricted areas in liquid/gaseous effluents.

The facility operator shall provide the DEP with copies of reports of the results of environmental surveillance 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:

Pennsylvania Department of Environmental Protection Bureau of Radiation Protection 13th Floor, Rachel Carson State Office Building P.O. Box 8469 Harrisburg, PA 17105-8469 Re 30 (CDC5WQM)256-13P Page 33 of 33

PERMITTEE NAME ADDRESS (include NA TIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCHARGE MONITORING REPORT (DMR)

PRIMARY FACILITY:LIMERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 I 001 OMB NO. 2040-0004.

ADDRESS: 200 EXELON WAY . PERMIT NUMBER I DISCHARGE NUMBER Southeast Region Facsimile KENNETT SQUARE, PA 19348 I MONITORING PERIOD

To calculate Credits see SITE LOCATION: 3146 SANATOGA ROAD, POTTSTOWN, PA 19464 YEAR MO. I DAY TO YEAR MO DAY Condition No. 14 on page 33.

MUNICIPALITY: LIMERICK TOWNSHIP I I l

- - - -- tA (COU NIY- MON'T .1OMIERY NOTJE: Head Instructions before comnletinp this form Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE

._ . ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST MONTHLY DAILY UNITS Sample FLOW Measurement XXXX xxxx xxxx

Permit MONITOR/ MONI1ORt Requirement REPORT . REPORT MGD XXXX XXXX XXXX XXXX ItWEEK MEASURED Sample TEMPERATURE Measurement XXXX XXXX XXXX Xxxx (EFFLUENT) Permit INST MAX Requirement XXXX XXXX XXXX XXXX XXXX 110 °F IIWEEK I-S Sample TOTAL RESIDUAL Measurement XXXX xxxx xxxx XXXX OXIDANTS Pcrmit Requirement XX XX XXXX XXXX XXXX XXXX 0.2 MG/L IAVEEK GRAB Sample pH M easurement XXXX XXXX XXXX Permit STD Requirement XXXX XXXX XXXX 6.0 XXXX 9.0 UNITS I /WEEK GRAB Sample SPECTRUS CT1300 M easurement xxxx xxxx XXXX Permit Requirement xxxx xxxx XXXX XXXX 0.2 0.4 MG!L I/WEEK GRAB Sample TEMPERATURE Measurement XXXX XXXX XXXX (RIVER INTAKE) Permit MONITORt - MONITOR/

Requirement XXXX XXXX XXXX XXXX REPORT REPORT °F 1/WEEK I-S Measurement TOTAL SUSPENDED Permit XXXX XXXX XXXX SOLIDS

Requirement Sample xxXX XXXX XXXX XXXX 30 60 MG/L I/WEEK 24 tiC Measurement CADMIUM, TOTAL Permit XXXX XXXX XXXX Requirement MONITOR/ MONITOR/

Sa ple XXXX XXXX XXXX X XX REPORT REPORT MG'L 2/MONTwi 24 IC NAMEITITLE PRINCIPAL EXECUTIVE I CERTIFY UNDER PENALTY OF LAW THAT I IIAVE PERSONALLY TELEPHONE DATE OFFICER EXAMINED AND AM FAMILIAR WITH THE INFORMATION .SUBMrITED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING TIIE INFORMATION, I BELIEVE TIlE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING TIlE POSSIBILITY OF FINE AND IMPRISONMENT SEE :18 U.S.C. §1001 AND 33 u.S.C. §1319.

(Penalties under these statutes may include fines up to S10,000 and or SIGNATURE OF PRINCIPAL EXECUTIVE AREA TYPE OR PRINT maximum imprisonment of between 6 months and 5 years) OFFICER OR AUTIORIZED AGENT CODE NUMBER YEAR MO DAY LUMM LN I AN L) tAILAY NA I IUN UF AN Y V IULA I IUN: kKCrerence all attachments here) PERMIT EXPIRES 03/31/2011 SUBMIT RENEWAL BY U9/:U/LZUIU EPA FORM 3320-1 (Rev 9 - 88) previous edition may be used (REPLACES EPA FORM T 40 WHICH MAY NOT BE USED) Page 1 of 13 Re 30 (CDO5WQM)256-13

PERM ITTEE NAME ADDRESS (include NAIFlONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name! Location if di fferenit) DISCHARGE MONITORING REPORT (DMR)

PRIMARY FACILITY:LIM ERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC -CLIENT ID NO. 147686 I I PA0051926 I MP 201 II 0MB NO. 2040-0004.

ADDRESS: 200 EXELON WAY PRIT NUMBER I I DISCHARGE NUMBER Southeast Region Facsimile KENNET'T SQUARE, PA- 19348 nn~~rn..,,t, t,,Wln.nf. .am nf~rrC.rf .rn .Inee-,n.

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MUNICIPALITY: LIMERICK TOWNSHIPI rf)l IMTV- MnlNTCAnMFRV I ti" NOlTE! Rpnd Inxtructinne hperore mnletino thic fhrm Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION, NO. FREQUENCY SAMPLE EX OF TYPE

____ ___A___ ____ ____ ___ NALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST. MONTHLY DAILY UNITS ____

Sample FLOW Measurement _______XXX XXXX xxxx _____

Permit MONITORJ. MONITOR/

Requirem_______

g~ent REPORT REPORT GPD XXXX xxxx xxxx xxxx 11IWEEK MEASURED Sample TOTAL SUSPENDED -Measurement XXXX XXXX XXXX_____

SOLIDS Permit

__________Requirement xxxx xxxx xxxx xxxx 30 100 MGIL 2imo~ni GRABi Sample OIL AND GREASE Measurement XXXX xxxx xxxx ______ _____

Permit Requirement xxxx xyXXX xxxx Xxxx 15 20 MG/L 2imoNTm

___ GRABl Sample measurement _ _ _ _ _ _ _ _ _ _ _ _ _ _

Permit Requirement__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Sample Measurement___ _____

Permit Requirement _ _ _ _ _ _ _ _ _ _ _ _

Sample Measurement _ _ _ _ _ _ _ _

Permit Requirement__ _ _ _ _ _ __ _ ___ _ _ _ _ _

Sample Measurement____ _____

Permit Requirement _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Sample Measurmn Permit Reurement _ _ _ _ _ _ _ _ _

NAIMEITITLE PRINCIPAL EXECUTrIVE I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY TELEPHONE DATE, OFFICER EXAMINED AND AM FAMILIAR WITH THE INFORMATION SLBMrrrED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THlE INFORMATION, I BELIEVE THE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMIrIrNG FALSE INFORMATION, INCLUDING TUIEPOSSIBILITY OF FINE AND IMPRISONMENT SEE IS U.S.C. §1001 AND 33-U.s.c. §1319.

_______________P___altimprisonmenteof betatween 6amnclus aindsu o 0 anyeas)r OFICNUERORFATHRIZEDPLAGENUTV CODEA NME DY TYPE OR PRINT mPatimum uiderithesento COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) statutes maynclud aind up tor SOFF ador IGNATRE OF P~rIRINCIPALGExC AREAE COVE 1 YEAR MO DA PERMIT EXPIRES 03/3.1/2011 SUBMIT RENEWAL BY 09/30/2010 EPA FORM 3320-I (Rev 9 - 88) previous edition may be used (REPLACES EPA FORM T -40 WHICH MAY NOT BE USED) Pagc2 of 1i Re 30 (CD05WQM)256-13A

PERMITTEE NAME ADDRESS (include NA' TIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCHARGE MIONITORING REPORT (DMR)

PRIMARY FACILITY:LIMERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 l MP 301 OMB NO. 2040-0004.

ADDRESS: 200 EXELON WAY PERMIT NUMBER DISCHARGE NUMBER Southeast Region Facsimile KENNETT SQUARE, PA 19348 MONITORING PERIOD

During discharge of wastewater from SITE LOCATION: 3146 SANATOGA ROAD. POTTSTOWN, PA 19464 YEAR I MO I DAY I TO I YEAR I MO I DAY laundry drain collection system.

MUNICIPALITY: LIMERICK TOWNSHIP I I I COi iNT:v NIOINTCONIERV NOTE: Read Instructions before comoletinr this form Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE

- ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST MONTHLY DAILY UNITS Sample FLOW Measurement XXXX XXXx XXxX Permit MONITOR/ MONITOR/_

Requirement REPORT REPORT GPD xXxX XXxx XxXX XXXX I/WEEK MEASURED Sample TOTAL SUSPENDED Measurement XXXX XXXX xx_ _

SOLIDS Permit Requirement XXXX XXXX xxxx XXXX 30 100 MG/L GRAB Sample OIL AND GREASE Measurement XXXX XXXX xxxx Permit Requirement XXXX xxxx xxxx XXXX 15 20 MG/L . GRAB Sample _

M easurem ent _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Permit Requirement Sample Measurement Permit Requirement Sample Measurement Permit Requirement Sample Measurement Permit Requirement Sample Measurement Perm^it Requi eent NAME/tTTLE PRINCIPAL EXECUTIVE I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY TELEPHONE DATE OFFICER EXAMINED AND AM FAMILIAR wmI THE INFORMATION SUIMITTED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION, I BELIEVE THE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE THAT TIERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE POSSIBILrrY OF FINE AND IMPRISONMENT SEE 18 U.S.c. Slol AND 33 u.s.c. §1319.

(Penalties under these statutes may include fines up to S10,000 and or SIGNATURE OF PRINCIPAL EXECUTIVE AREA TYPE OR PRINT maximum imprisonment of between 6 months and 5 years) OFFICER OR AUTrHORIZED AGENT CODE NUMBER YEAR MO DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 EPA FORM 3320-1 (Rev 9 - XX) previous edition may be used (REPLACES EPA FORM T -40 WHICH MAY NOT BE USED) Page 3 of 13 Re 30 (CD05WQM)256-13B

PERMITTEE NAME ADDRESS (include NA' TIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCHARGE MONITORING REPORT (DMR)

PRIMARY FACILITY:LIMERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 IMP 401 OMB NO. 2040-0004.

ADDRESS: 200 EXELON WAY l PERMIT NUMBER DISCHARGE NUMBER Southeast Region Facsimile KENNETT SQUARE, PA 19348 l MONITORING PERIOD

Sample shall be collected during the discharge SIT LOAT."'A' d.WOCA RDlA, POl'gTTSTOWN, PA .964A

- -,1T l VPAQ I MO I nAV I Tn I VIEAR I Mf I flAY rmm the nverflaw location at the nond.

MUNICIPALITY: LIMERICK TOWNSHIP - : Il 1 l l . l .

COUNTY: MONTGOMERY _ .. . . _ ,

NOTE: Read Instructions before completing this form Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE

._ ._ . ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST MONTHLY DAILY UNITS Sample FLOW Measurement . xxxx xxxx xxxx Permit MONITORI MONITOR/

Requiremenl REPORT REPORT GPD xXXX XXXX XXXX XXXX I/WEEK MEASURED Sample TOTAL PHOSPHORUS Measurement XXXX XXXX xxxX as P Permit MONITOR/ MONITOR/

Requirement XXxx XXXX xxxX XXXX REPORT REPORT MG!L _ GRAB Sample Measurement .

Permit Requirement . .

Sample Measurement .

Permit Requirement Sample Measurement Permit Requirement Sample Measurement Permit

. Requirement . . . .

Sample Measurement Permit Requirement . _

NAM1E/TrrLE PRINCIPAL EXECUTIrVE I CERTIFY LINDER PENALTY OF LAW THAT I HAVE PERSONALLY TELEPIhONE DATE OFFICER EXAMINED AND AM FAMILIAR WITH THlE INFORMATION SUBMITTED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING TlE INFORMATION. I BELIEVE TlE SUBMIITED INFORMATION Is TRUE, ACCURATE AND COMPLETE. I AM AWARE TIIAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMIlTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT SEE 18 U.S.C. §1001 AND 33 u.s.C. §1319.

(Penalties under these statutes may include fines up to $10,000 and or SIGNATUREOF PRINCIPAL EXECUTIVE AREA TYPE OR PRINT maximum imprisonment of between 6 months and 5 years) OFFICER OR AUTHORIZED AGENT CODE NUMBER YEAR MO DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 EPA FORM 3320-1 (Rev 9 - 88) previous edition may be used (REPLACES EPA FORM T -40 WHICH MAY NOT BE USED) Page 4 of I3 Re 30 (CDO5WQM)256-13C

3800-PM-WSWM0083p Rev. 6/2004 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Additional Facilities DISCHARGE MONITORING REPORT (DM R)

PRIMARY FACILITY: LIMERICK GENERATING STAiTION CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 - 002, 004, 022 Southeast Region ADDRESS: 200 EXELON WAY PERMIT NUMBER DISCHARGE NUMBER Facsimile KENNETT SQUARE, PA 19348 MONITORING PERIOD SITE LOCATION: 3146 SANATOGA ROAD, POTTSTOWN, PA 19464 YETOADAY Sample any one of these outfalls.

MUNICIPALITY: LIMERICK TOWNSHIP .

Cni ONTY NIONTCGOMERY NOTE: R, ead Instructions before completing this form PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE

- EX OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS Sample C-BIOCHEM ICAL OXYGEN Measurement XXXX XXXX xxxx xxxx DEMAND (5-DAY) Pernit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG.L YFAR GRAB Sample CHEM ICAL OXYGEN Measurement XXXX XXxX XXXX XXXX DEMAND Pennit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MGIL YEAR GRAB Sample OIL AND GREASE Measurement XXXX xxxx xxxx XXXX Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample pH Measurement XXXX XXXX XXXX XXXX Permit REPORT STD I PER Requirement XXXX XXXX XxxX _ xXx XXXX DAILY MAX. UNITS YEAR GRAB Sample TOTAL SUSPENDED Measurement XXXx XXXX XXXX XXXX .

SOLIDS (TSS) Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MGL YEAR GRAB Sample TOTAL KJELDAHL Measurement XXXX xxxx xxxx xxxx NITROGEN (TKN) Permit REPORT I PER Requirement XXXX XxxX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample TOTAL PHOSPHORUS Measurement Xxxx XXXX xxxx xxxx Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample IRON (DISSOLVED) Measurement XXXX XXXX XXXx _xxx Permit REPORT I PER Requirement XXxx XXXX XXXX XXXX XXXX DAILY MAX. MGiL YEAR GRAB Sample Measurement Permit Requirement _

NAMEITiTLE PRINCIPAL EXECUTIVE OFFICER I CERTIFYUNDERPENALTY OF LAW THAT I HAVE PERSONALLY EXAMINED AND AM TELEPHONE DATE FAMILIAR wmI TlE INFORMATION SUBMITTEDHEREINAND BASEDONMY INQLIRY OF THOSEINDIVIDUALS IMMEDIATELY RESPONSIBLE FOROBTAINING TIE INFORMATION, I BELIEVETIHESUBMITTED INFORMATION IS TRUE, ACCURATEAND COMPLETE. I AM AWARE THAT TIIERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THEPOSSIBILITY OF FINEAND IMPRISONMFNT SEE18 U.S.C.

S 100I AND 33 U.S.C 51319. (Penalties under Ihese slatutes may include fines up to SIGNATURE OFPRINCIPALEXECUTIVE AREA TYPE OR PRINT S10.000 and ornnximum imprisonment ofbetween 6 months and S years) OFFtCEROR AUTHORIZED AGENT CODE NUMBER YEAR MO DAY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 Re 30 (CD05WQM)256-I3D Page 5 of 13

PERMITTEE NAME ADDRESS (include NA' rIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCHARGE MONITORING REPORT (DMR) l PRIMARY FACILITY:LIMERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 _ 003 OMB NO. 2040-0004.

ADDRESS: 200 EXELON WAY PERMIT NUMBER DISCHARGE NUMBER Southeast Region Facsimile KENNETT SQUARE, PA 19348 _ MONITORING PERIOD

Sample during discharge from drain valve associated M!TEULCIAT!LT: 3LI46ESRICTOW NSHIPtIII ROAD,I POTTETOWNV -* A1t 4f

, 19464 A Afl D l

I I r% -'I l W% I' VV n i, IW I^ IM' l I ..4b h :!r~!:f =:::r::-. Irz:"'::

MUNICIPALITY: LIMERICK TOWNSHIP I I I # I 1 I COUNTY: MONTGOMERY NOTE: R Read instructions before completing this form Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST MONTHLY DAILY UNITS Sample FLOW Measurement XXXX XXXX XXXX Permit MONITORt MONITOR/

Rcquircmcnt REPORT REPORT MGD XXXX XXXX XXXX XXXX

CALCULATED Sample TOTAL SUSPENDED Measurement XXXX xxxx xxxx SOLIDS Permit MONITOR/ MONrfOR1 Requirement XXXX XXXX XXXX XXXX REPORT REPORT MG/L

GRAB Sample TEMPERATURE Measurement XXXX xxxx xxxx xxxx Permit INST MAX Requirement XXXX xxxx XXXX XXXX xxxx 110 °F

I-S Sample TOTAL RESIDUAL Measurement XXXX xxxx XXXX XXXX OXIDANTS Permit Requirement XXXX XXXX XXXX XXXX XXXX 0.2 MG/L

CGRAB Sample pH Measurement XXXX XXXX XXXX Permit STD Requirement xxXX XXxX XXXX 6.0 XXXX 9.0 UNITS

GRAB Sample SPECTRUS CT1300 Measurement XXXX xxxx xxxx Permit Requirement XxXX XXXX XXXX XXXX 0.2 0.4 MGIL = GRAD Sample Measurement Permit Roqu rement NAME/TrITLE PRINCIPAL EXECUTIVE I CERTIFY UNDER PENALTY. OF LAW THAT I IIAVE PERSONALLY TELEPHONE DATE OFFICER EXAMINED AND AM FAMILIAR wmI TtlE INFORMATION SUBMIITED HEREIN AND BASED ON MY INQUIRY OF TIIOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION, I BELIEVE THlE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE TiHAT TMERE ARE SIGNIFICANT PENALTIES FOR SUBMIrTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT SEE 18 u.s.c. §1001 AND 33 U.S.C. §1319.

(Penalties under these statutes may include fincs up to Sl0,000 and or SIGNATURE OF PRNCIPAL EXECUTIVE AREA TYPE OR PRINT maximum imprisonment of between 6 months and 5 years) OFFICER OR AUTIIORIZED AGENT CODE NUMBER YEAR MO DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 EPA FORM 3320-1 (Rev 9 - 88) previous edition may be uscd (REPLACES EPA FORM T -40 WHICH MAY NOT BE USED) Page 6of IJ Re 30 (CD05WQM)256-13E

PERMITTEE NAME ADDRESS (include NA'TIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCH ARGE MONITORING REPORT (DMR)

PRIMARY FACILITY:LIMERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 I l 005 OMB NO. 2040-0004 ADDRESS: 200 EXELON WAY PERMIT NUMBER DISCHARGE NUMBER Southeast Region Facsimile KENNETT SQUARE, PA 19348 _ MONITORING PERIOD

Sample during discharge from drain valve associated SITE LOCATION: 3146 SANATOGA ROAD, POTTSTOWN, PA 19464 YEAR MO DAY TO YEAR MO DAY with the circulating water at Turbine Unit 2.

MUNICIPALITY: LIMERICK TOWNSHIP =

COUNTY: MONTGOMERY NOTE: Read Instructions before completing this form.

Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST MONTHLY DAILY UNITS Sample FLOW Measurement . XXXX XXXX xxxx Permit MONITOR/ MONITOR/

Rquirement REPORT REPORT MGD XXXX XXXX XXXX XXXX

CALCULATED Sample TOTAL SUSPENDED Measurement XXXX XXXX xxxx SOLIDS Permit MONITOR/ MONITOR/

Requirement XXXX XXXX XXXX XXXX REPORT REPORT MG/L

GRAB Sample TEMPERATURE Measurement XXXX XXXX XXXX xxXX Permit INST MAX Requirement xxxx xxXX XXX XXXX XXXX 110 F* I-S Sample TOTAL RESIDUAL Measurcment XXXX XXXX XXXX XXXX OXIDANTS Permit Requirement xxxx XXXX xxxx xxXX xxxx 0.2 MG/L GRAB Sample pH Measurement XXXX XXXX xxxx Permit STD Requirement XXXX xxxx xxxx 6.0 XXXX 9.0 UNITS GRAB Sampic SPECTRUS CT1300 Measurement XXXX XXXX XXXX Permit Requirement XXXX XXXX xxxx xxxx 0.2 0.4 MG/L _ GRAB Sample Measurement _

Pemnit Requirement I NAMErTrrLE PRINCIPAL EXECUTIVE I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY TELEPHONE DATE OFFICER EXAMINED AND AM FAMILIAR wmT THE INFORMATION SUBMITTED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION, I BELIEVE THE SUBMITFED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMFITING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT SEE 18 U.S.C. §1001 AND 33 U.S.C. §1319.

(Penalties under these statutes may include fines up to S10,000 and or SIGNATURE OF PRINCIPAL EXECUTIVE AREA TYPE OR PRINT maximum imprisonment ofbetween 6 months and 5 years) OFFICER OR AUTIORIZED AGENT CODE NUMBER YEAR MO DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 EPA FORM 3320-1 (Rev 9 - 88) previous edition may be used (REPLACES EPA FORM T 40 WHICH MAY NOT BE USED) Page 7 of 13 Re 30 (CD05WQM)256-13F

3800-PM-WSWM0083p Rev. 6/2004 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Additional Facilities DISCHARGE MONITORING REPORT (DMR)

. PRIMARY FACILITY: LIMERICK GENERATING STA,TION CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 006, 007, 009 Southeast Region 008, ADDRESS: 200 EXELON WAY . PERMIT NUMBER DISCHARGE NUMBER Facsimile KENNETT *e~~~~~~~~~

SQUJARE, PA t0934 _ &(hTID11C .- ParUOD O1JAAA

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\lljN\ ,

_.._tA. v - Suimipie any one of ihese ouifaiis.

SITE LOCATION: 3146 SANATOGA ROAD, POTTSTOWN, PA 19464 YEAR I MO I DAY TO YEAR [ MO I DAY MUNICIPALITY: LIMERICK TOWNSHIP i I Oi INmTv- MONTGOMERRY NOTE: Read Instructons before completing thii form PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE

. . . EX OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS Sample C-BIOCHEMICAL OXYGEN Measurement XXXX XXXX XXXX XXXX DEMAND (5-DAY) Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample CHEMICAL OXYGEN Measurement XXxx xxxx xxxx XXXX DEMAND Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MGQL YEAR GRAB Sample OIL AND GREASE Measurement XXXX XxxX XXXX XXXX Permit REPORT IP Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MGIL YEAR GRAB Sample pH Measurement XXXX XXXX XXXX XXXX Permit REPORT STD T PR Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. UNITS YEAR GRAB Sample TOTAL SUSPENDED Measurement XXXX XXXX XXXX XXXX SOLIDS (TSS) Permit REPORT 1PE Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample TOTAL KJELDAHL Measurement XXXX XXXX XXXX XXXx NITROGEN (TKN) Permit REPORT I PER Requircment XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample TOTAL PHOSPHORUS Measurement XXXX XXXX XXXX XXXX Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample IRON (DISSOLVED) Measurement XXXX XXXX XXXX XXXX Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample Mcasurement .

Permit Requirement _ _

NAPFJTITLE PRINCIPAL EXECUTIVEOFFICER I CERTIFY UNDER PENALTY OFLAWTHAT I HAVEPERSONALLY EXAMINED ANDAM TELEPHONE DATE FAMILIAR WITH THE INFORMATION SUBMITTED HEREIN AND BASEDON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION, I BEuEVE THE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM

... n .....T THEP.E. > !-:: r _:'TS . t-.r..S F INFORMATION, tNCU.DING THE. - sr OF FINE.AND IMPRISONMENT SE IS U.S.C.

S 1001 AND 33 u.s.c. §1319. (Penailties under these statutes may include fines up to SIGNATURE OF PM, CIPAL EXECUTIVE ARE-A TYPE OR PRINT S10.000 and or maximum imprisonment of between 6 months and 5 years) OFFICER ORAUTlIORIZEDAGENT CODE NUMBER YEAR MO DAY COMM ENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 R e 0 ( D O 5 Q M ) 5 6- 3 GP age Z of 1 Re 30 (CD05WQM)256-I3G Page Nor] j

PERMITTEE NAME ADDRESS (include NA TIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCHARGE MONITORING REPORT (DIMR)

PRIMARY FACILITY:LIMERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 012 OMB NO. 2040-0004.

ADDRESS: 200 EXELON WAY PERMIT NUMBERF. l DISCHARGE NUMBER Southeast Region Facsimile

. KENNETT SQUARE, PA 19348 MONITORING PERIOD

Sample daily during discharge from SITE LOCATION: 3146 SANATOGA ROAD, POTTSTOWN, PA 19464 YEAR MO DAY I TO I YEAR IMO M DAY dredging. A composite during dredging.

MUNICIPALITY: LIMERICK TOWNSHIP .___

Crl iNTy- MONTG.OMNERY NOTE: RRead Instructions before completing this form Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE

._ . . ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST. MONTHLY DAILY UNITS Sample FLOW Measurement XXXX XXXX XXXX Permit MONITOR) MONITOR/

Requirment REPORT REPORT MGD XXXX XXXX XXXX XXXX

ESTIMATED Sample TOTAL SUSPENDED Measurement XXXX XXXX XXXX SOLIDS Permit MONITOR/

(3rd to 5th Year) Requirement XXXX XXXX XXXX XXXX REPORT 100 MG/I.

COMPOSITE Sample OIL AND GREASE Measurement XXXX XXXX XXXX Permit MONITOR/ MONITOR/

Requirement XXXX XXXX XXXX REPORT REPORT MG/L

GRAB Sample IRON, DISSOLVED Measurement XXXX XXXX XXXX Permit MONITOR/ MONITOR/

Requirement XXXX XXXX XXXX XXXX REPORT REPORT MG/L

COMPOSITE Sample IRON TOTAL Measurement XXXX XXXX XXXX (3rd to 5th Year) Permit MONITOR)

Requirement XXXX XXXX XXXX XXXX REPORT 7.0 MG/L COMPOSITE Sample pH Measurement XXXX XXXX . XXXX .

Permit MONITOR/ MONITOR) STD Requirement XXXX XXXX XXXX REPORT XXXX. REPORT UNIT

GRAB

. Sample TOTAL SUSPENDED Measurement XXXX XXXX XXXX .

SOLIDS Permit MONITOR/ MONITOR/

(I st and 2nd Years) Requirement XXXX XXXX XXXX XXXX REPORT REPORT MGIL . COMPOSITE Sample IRON TOTAL Measurement XXXX XXXX XXXX (Ist and 2nd Years) Permit MONITOR/ MONITOR/

_equ rement XXXX XXXX XXXX XXXX REPORT REPORT MG!L

COMPOSITE NAME/TrrLE PRINCIPAL EXECUTIVE I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY TELEPHONE DATh OFFICER EXAMINED AND AM FAMILIAR WITH THE INFORMATION SUBMITTED IIEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTANING THE INFORMATION, I BELIEVE TIIE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMflTING FALSE INFORMATION. INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT SEE 18 U.S.C. 51001 AND 33 U.S.C. §1319.

(Penalties under these statutes may include fines up to S10000 and or SIGNATtRE OF PRINCIPAL EXECUTIVE AREA TYPE OR PRINT maximum imprisonment ofbetwecn 6 months and 5 years) OFFICER OR AUTHORIZED AGENT CODE NUMBER YEAR MO DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 EPA FORM 3320-1 (Rev 9 - 88) previous edition may be used (REPLACES EPA FORM T 40 WHICH MAY NOT BE USED) Page 9 of I i Re 30 (CD05WQM)256-13H

3800-PM-WSWM0083p Rev. 612004 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Additional Facilities DISCHARGE MONITORING REPORT (DMR)

PRIMARY FACILITY: LIMERICK GENERATING STATION CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 013,014,015,016,017,018,019,030. Southeast Region ADDRESS: 200 EXELON WAY PERMIT NUMBER DISCHARGE NUMBER Facsimile L1VIV17N 0IAQR1 PA 1101IA UwAnITADINI', ePliiinA c^ P. :::y

_ . c_.... 1. M^^ .. S^lZ t

SITE LOCATION: 3146 SANATOGA ROAD, POTTSTOWN, PA 19464 YEAR I MO I DAY TO YEAR I MO DAY MUNICIPALITY: LIMERICK TOWNSHIP il l COUNTY: MONTGOMERY NOTE: Read instructions before completing this form PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE

. . . EX OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS Sample C-BIOCHEMICAL OXYGEN Measurement XXXX XXXX XXXX XXXX DEMAND (5-DAY) Permit REPORT I PER Requirement XXXX xxxx XXXX XXXX_ XXXX l DAILY MAX. MG/L r _ YEAR GRAB Sample CHEMICAL OXYGEN Measurement XXXX XXXX XXXX XXXX DEMAND Penmit Requirement XXXX XXXX XXXX XXXX XXXX REPORT DAILY MAX. MG/L I PER YEAR GRAB Sample OIL AND GREASE Measurement XXXX XXXX xxxx xxxx Permi. REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG;L YEAR GRAB Sample pH Measurement XXXX XXXX XXXX XXXX _

-Perit Requirement XXXX REPORT STD I PER XXXX XXXX XXXX XXXX DAILY MAX. UNEIS YEAR GRAB Sample TOTAL SUSPENDED Measurement XXXX XXXX xXXX XXXX SOLIDS (TSS) Permit Requirement XXXX XXXX XXXX REPORT I PER XXXX XXXX DAILY MAX. MG'L YEAR GRAB Sample TOTAL KJELDAHL Measurement XXXX XXXX XXXX xxxx NITROGEN (TKN) Permit Requirement REPORT I PER XXXX XXXX XXXX XXXX XXXX DAILY MAX. MGIL YEAR GRAB Sample TOTAL PHOSPHORUS Measurement XXXX XXXX XXXX XXXX .

Permit REPORT I PER Requiremnt XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample IRON (DISSOLVED) Measurement XXXX XXXX XXXX XXXX Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG;L YEAR GRAB Sample Measurement _

Permit Reauirertfent NAME/TITLE PRINCIPAL ExecUiVE o1CER I CERTFY IUNDER PENALTYOF LAW THAT I HAVE PERSONALLY EXAMINE AD AM TELEPHONE T DATE FAMILIAR WITH THE INFORMATION SUBMITTFD HERFIN AND BASED ONMY INOUIRYOF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION, I BELIEVE THE SUBMITIED INFORMATION IS TRUE, ACCURATEAND COMPLETE. I AM INFORMATION. INCLUDING THE POSSIBILITYOF FINEAND IMPRISONMENT SEE18 u.s.c.

S1001 AND 33 U.s.C. 51319. (Penalies under these statutes may include fines up to SWGNATt.EOFPRXNCIPALEXECUTIVE AREA TYPE OR PRINT SI0.000 and or maximum imprisonment of between 6 months and S years) OFFICEROR AUTHORIZEDAGENT CODE NUMBER YEAR MO DAY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachmenis hefe) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 Re 3 0 W.COM) 5 - 3 Pag A~

Re 30 (CDO5WQM)256-l3R Page IO of 13

3800-PM-WSWM0083p Rev. 6/2004 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Additional Facilities DISCHARGE MONITORING REPORT (DMR)

PRIMARY FACILITY: LIMERICK GENERATING STA JTION CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 021 ADDRESS: 200 EXELON WAY PERMITNUMBER I l DISCHARGE NUMBER Southeast Region Facsimile KENNEJT SQUARE, PA 19348 MONITORING PERIOD

Cooling tower drift loss, etc.

__~~~~Y __AY A --- l_ I -.-. l TO l- YEA _ .

l I MO AY SITE LOCATION: 3146 SANATOGA ROAD, POTTS [OWN, PA 19464 YLEAR IMU I [DAY I [U I YEAR I MU I DAY MUNICIPALITY: LIMERICK TOWNSHIP I I I I I COi NTY: MONTGOMERY NOTE: Read Instructions before completing this form PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS Sample C-BIOCHEMICAL OXYGEN Measurement XXXX XXXX xxxx xxxx DEMAND (5-DAY) Permit REPOR1r DAILY MAX. MGL

[R Requirement XXXX XXXX XXXX XXXX XXXX YEAR GRAB Sample CHEMICAL OXYGEN Measurement XXXX XXXX . xxxx XXXX DEMAND Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MGJL YEAR GRAD Sample OILANDGREASE Measurement XXXX XxXX XXXX XXXX Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample pH Measurement XXXX XXXX XXXX XXXX Permit REPORT STDFI P Requirement XXXX XXXX *XXXX XXXX XXXX DAILY MAX. UNITS YEAR GRAB TOTALSUSPENDED XSample TOL SSP Measurement XXXX XXXX XXXX XXXX SOLIDS (TSS) Permit REPORT F -

Requirement XXXXXXXX XXXX I XXXX XXXX DAILY MAX. MG;L YEAR GRAB Sample TOTAL KJELDAHL Measurement xxxX XXxX xxxx XXXX NITROGEN (71N) Permit Requirement XXXX REPORT I F XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample TOTAL PHOSPHORUS Measurement XXXX XXXX XXXX XXXX .

Permit REPORT I PE Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample IRON (DISSOLVED) Measurement xxxx XXXX xxxx XXXX Permit REPORT I PER Requirement XXXX XXXX XXXX XXXX XXXX DAILY MAX. MG/L YEAR GRAB Sample Measurement Permit Requirement . _ _

NAMEtIT1L PRINCIPAL EXECUTIVE OFrICER I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY EXAMINED AND AM TELEPHONE DATE FAMILIAR WITH THE INFORMATION SUBMIrTED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION. I.

BELIEVE THE SUSMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT SEE I S U.S.C.

l1001 AND 33 u.S.C. §1319. (Penalies underthese statutes may include fines up to SIGNATURE OF PRINCIPALEXECUTIVE AREA TYPE OR PRINT SI 0.000 and or maximum imprisonmenl of between 6 months and 5 years) OFFICER OR AUTHORIzED AGENT CODE NUMBER YEAR MO DAY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011

SUBMIT RENEWAL BY 09/3 0/2010 Re 30 (CD05WQM)256-131 Re 3 (CD5WQ)256131Page 11 of 13 Page I I of 13

PERMITTEE NAME ADDRESS (includc NA' NIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCHARGE MONITORING REPORT (DMR)

PRIMARY FACILITY:LIMERICK GENERATING STATION FORM APPROVED.

CLIENT: EXELON GENERATION COMPANY, LLC - CLIENT ID NO. 147686 PA0051926 020 OMB NO. 2040-0004.

ADDRESS: 200 EXELON WAY PERMIT NUMBER DISCHARGE NUMBER Southeast Region Facsimile KENNETT SQUARE PA 19348 MONITORING PERIOD

Sample daily during discharge from cooling towers S!TElOCATIONN: 3I46 SANATOGA ROlAD POTTSTOWNNPA 1944 VPAI I Mn TO IAVVVAD I NAA I f.AV br:h AMn.n MUNICIPALITY: LIMIERICK TOWNSHIP--

COUNTY: MONTGOMERY liz z i iA i , i NOTE: Ilead instructions before comnletine this form Parameter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM MONTHLY DAILY UNITS INST MONTHLY DAILY UNITS Sample FLOW Measurement XXXX XXXX XXXX Permit MONITOR/ MONITORJ Requircnt REPORT REPORT MGD XXXX XXXX XXXX XXXX

CALCULATED Sample TOTAL SUSPENDED Measurement xxxx xxxx xxxx SOLIDS Permit MONITOR/

Requirement XXXX XXX XXX XXXX REPORT 100 MG/L

GRAB Sample pH Measurement XXXX XXXX XXXX _

Permit STD Requirement XXXX XXXX XXXX 6.0 XXXX 9.0 UNITS

GRAB Sample Measurement Permit Requirement _

Sample Measurement Permit Requirement Sample Measurement Permit Requirement Sample Measurement Requirement _ _

Sample Measurement Permit Requ rement _ T

_ _ A NAmE/Tm.E PRINCIPAL EXECUTIVE I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY TELEPHONE DATE OFFICER EXAMINED AND AM FAMILIAR WITH THE INFORMATION SUBMITTED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION, I BELIEVE THE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PFNALTIES FOR SUBMITTING FALSE INFORMATION, INCLllDING THE POSSIBILITY OF FINE AND IMPRISONMENT SEE 18 u.S.c. §1001 AND 33 U.S.C. §1319.

(Penaidies unafr these statutes rnay inciude fines up to. ?I,VuuW and or SWUNA I UKh Uk YMRLNIltAL txtt~U IIVI: AREA TYPEORPRINT maximum imprisonment of hween 6 mnths an 5 years ) OFFICER OR AUTHORIZED AGENT CODE NUMBER YEAR MO DAY COMMENT AND EXI'LANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/31/2011 . SUBMIT RENEWAL BY 09/30/2010 EPA FORM 3320-1 (Rev 9 - 88) previous edition may be used (REPLACES EPA FORM T -40 WIIICH MAY NO I HE USED) rage IZ ot 15 Re 30 (CD05WQM)256-13J

PERMITTEE NAME ADDRESS (include NA' niONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

Facility Name / Location if different) DISCHARGE MONITORING REPORT (DMR)

PRIMARY FACILITY:LIMERICK GENERATING STATION CLIENT: EXELON CENERATION COMPANY, LLC - CLIENT ID NO. 147686 ADDRESS: 200 EXELON WAY KENNETT SQUARE. PA 19348

- PA0051926 I PERMIT NUMBER I I

-I DISCHARGE NUMBER 023 I FORM APPROVED.

OMB NO. 2040-0004.

Southeast Region Facsimile I MONITORING PERIOD I Sample during discharge through 023 SITE LOCATION: 3146 SANATOGA ROAD, POTTSTOWN, PA 19464 I YEAR I MO I DAY I TO I YEAR I MO I DAY _ Use credit for DT1400.

MUNICIPALITY: LIMERICK TOWNSHIP I I I '1 I COUNTY: MONTGOMERY NOTE: Read instructions before comTletino this form Paramneter QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE EX OF TYPE E_ _ ANALYSIS AVERAGE MAXIMUM MINIMUM AVERAGE MAXIMUM Sample MONTHLY DAILY UNITS INST. MONTHLY DAILY UNITS Sample FLOW Measurement xxxx xxxx x~xxx Permit MONITOR/. MONITOR/

Simpet REPORT REPORT MGD xxxX xxxx xxxx XXXX . MEASURED

.Sample TOTAL SUSPENDED Measurement xxxx xxxX XXXX SOLIDS** Permit MONITOR/

Requirement xxxX XXXX xxXX xxxx REPORT 100 MG/L . GRAB Sample TOTAL RESIDUAL Measurement XXXX XX xxxx xxxx ___ __

OXIDANTS Permit Requirement XXXX XXXX XXxX XXXX XXXX 0.2 MG;L *GRAB Sample pH Measurement XXXX XXXX XXXX Permit STD Requirement XXXX xxXX xxxx 6.0 xxxx 9.0 UNITS GRAB Sample SPECTRUS CT1300 Measurement xxxx xXXX xxxx Permit M easurement __ _ _ _ _ _ _ __ _ _ _ _ _ _ __ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Permit Requirement Sample Measurement Permit Requirement Sample Measurement Permit Reqirement _

NAMEtTITLE PRIr4CIPAL EXECUTIVE I CERTIFY UNDER PENALTY OF LAW TIIAT I HAVE PERSONALLY TELEPHONE DATE OFFICER EXAMINED AND AM FAMILIAR WITH THlE INFORMATION SUMIrrTED IIEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION, I BELIEVE THE SUBMITTED INFORMATION IS TRUE, ACCURATE AND COMPLrTE. I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMIITTNG FALSE INFORMATION. INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT SEE 18 U.S.C. §1001 AND 33 u.s.c. §1319.

(Penalties under these statutes may include fines up to $10,000 and or SIGNATUREOFPRINCIPALEXECULTIVE AREA TYPE OR PRINT maximum imprisonment of between 6 months and 5 years) OFFICER OR AUTIIORIZED AGENT CODE NUMBER YEAR MO DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) PERMIT EXPIRES 03/3 1 /2011 . SUBMIT RENEWAL LY 09/30/201.0

_ _ . _ _ _ _ . _ _ ~~~~~~~~~~~~~SUBI REEA BY ..........

EPA FORM 3320-1 (Rcv 9 - 88) previous edition may be used (REPLACES EPA FORM T 40 WHICH MAY NOT BE USED) Page 13 of 13 Re 30 (CDO5WQM)256-13K

INSTRUCTIONS FOR UTILIZING NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM INPDESJ DISCHARGE MONITORING REPORT (DMR)

The original DMR form(s) included with your permit are provided to serve as a master. Copies of this form must be used when reporting the results of the monitoring requirements in your permit. Do not write on or send the orizinal master. If you receive computer generated preprinted DMIR fc. ;. they should be used in place of the enclosed torrns.

Please make a note of your permit expiration date on the master DOOR so that you will be reminded to submit your renewal application 180 days prior to expiration.

A "Monitor.-Report" requirement contained in a permit requirement block indicates that the parameter is monitored and the test result reported in the appropriate block. Anyvtest methods specified in Part .A.or Part C of the permit must be used.

An "Average Weekly" value is defined as the highest weekly arithmetic average value observed during the monthly moni:oring period.

Loading or mass units shall be reported as the average of the calculated daily loadings during the monthly.

weeklv or daily measurement period.

For parameters for which the effluent limit is lower than the Method Detection Limit (MADL) of the most sensitive existing EPA approved (40 CFR Part 136) test method or DEP approved method, the parameters should be analyzed using the test method specified in Part C of the permit. The sample results must be specified on the DMR form as either the measured (quantified) value or as "less than' the detection limit used in the test (e.g. < x.x). Results SHALL NOT be reported as "Not Detectable" or '5-D". For computing monthly averages.

all "less than" sample results may be counted as zero values. All sample results used in computing monthly average values must be reported on the DMR form in the DN[R comment section.

You should also note any other special instructions or definitions contained on the front and back of the DMR as well as in the permit.

Submit the completed forms to: DEP, EPA and the County Health Department as required in the permit. Unless otherw ise specified in the permit, the DOCR form must be submitted each month. If there is no discharge durina the month. the DMIR must be submitted with "NO DISCHARGE" written across the front.

3800-PM-WSWM0083t Rev. 612004 Additional Information

'hoM COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION BUREAU OF WATER SUPPLY AND WASTEWATER MANAGEMENT ADDITIONAL INFORMATION FOR THE REPORTING OF STORMWATER DISCHARGE MONITORING (This form must be completed and submitted with the DMR form for each outfall sampled)

A. PERMITTEE'S NAME: NPDES PERMIT NO. PA0051926 Exelon Generation Company, LLC OUTFALL/DISCHARGE NO.:

FACILITY/LOCATION:

Limerick Generating Station Limerick Township Montgomery County B. SAMPLED STORM EVENT Provide the date of storm event: Provide the duration (in hours) of storm event:

Estimate rainfall measurements (in inches) of the storm which Estimate the duration between the storm event sampled and the generated the sample runoff: end of the previous measurement (greater than 0.1 inch rainfall) storm event:

Drainage area and volume of runoff (1) Paved area - square feet x 0.9 (estimated runoff coefficient) x rainfall _ inches x 0.6234 = - gallons (2) Unpaved area - square feet x 0.5 (estimated runoff coefficient) x rainfall _ inches x 0.6234 gallons Total area square feet Total volume of discharge gallons C. GRAB SAMPLE METHODOLOGY If a grab sample during the first 30 minutes of the discharge was impracticable, and the sample was instead taken during the first hour of the discharge, describe the circumstances:

D. SAMPLE WAIVER If samples could not be collected due to adverse climatic conditions, describe why samples could not be collected. Attach available documentation of the event.

If monitoring data submitted is being used to represent other substantially identical ouffalls, summarize on a drainage area and volume of runoff under item B. above for each outfall.

WORKSHEET FOR THE DETERMINATION OF CREDIT FOR TOTAL SUSPENDED SOLIDS AT OUTFALL 001 & 023

1. Prepare a composite representative sample by collecting grab samples every two hours from the Cooling Tower No. 1 during the period when the chemical additive Spectrus DT1440 is in use. Analyze this composite representative sample for TSS (Call it TSSI mg/I)

2. Repeat step 1 for the Cooling Tower No. 2 and analyze for total suspended solids.

(Call it TSS2 mg/l)

3. Calculate the average blow down rate for Cooling Tower 1 during the sampling time period.

(Call it Q1 mgd)

4. Repeat step 3 for the Cooling Tower No. 2 to determine the average blow down rate for the Cooling Tower No. 2 during the sampling time period.

(Call it Q2 mgd)

5. Use the following equation to calculate credit for total suspended solid during the use of the additive:

[TSS1 xQ1 + TSS2xQ2] / [Q1 + Q2] = C1 mg/I l;. Prepare a composite representative sample by collecting grab samples at Outfall 001 & 023. Analyze for total suspended solid.

(Call it TSS mg/I)

7. Reported effluent TSS concentration using the following equation:

TSS at Outfall 001 & 023 after credit = TSS - C1 NOTE:

For computing averages for DMR reporting and for determining permit compliance, all "less than zero" results must be counted as zero values.

L imericktssnet (Rev. 1106)

DATA REPORTING FORM - CHEMICAL ADDITIVES Company Name: Exelon Generation Company. LLC (Limerick Gen. Sta.) NPDES Permit No. PA005 1926 Outfall No.: Month/Year:

Effluent Discharge Allowable Usage Actual Usage Concentration Day Rate (MGD) Rate (lbs/day) Rate (lbs/day) (mgll)* Additive Name

-2

-4 6

-9 I0 12 13 32 5_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

42 6_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

16 2 7_ _ _ __ _ _ _ _ _ _ _ _ _

162 78_ _ _ _ _ _ _

72 9_ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _

83 0_ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _

9 191_ _ _ _ _ _ _ _ _ _ _ _

20 24 2-5 22 23 NOTE: The discharge rate is to be measured at the final outfall.

If chemical analysis of the outfall is performed, report results in this column.

3800-PM-WSIVM0083v Rev. 612004 Annual Inspection De 5,DEPARTMENT i COMMONWEALTH OF PENNSYLVANIA OF ENVIRONMENTAL PROTECTION BUREAU WATER SUPPLY AND WASTEWATER MANAGEMENT PA0015 926 ANNUAL INSPECTION FORM FOR NPDES GENERAL PERMIT FOR DISCHARGES OF STORMWATER ASSOCIATED WITH INDUSTRIAL ACTIVITIES

1. Date of Irspection 2. Facility Owner/Operator Name and Address:

Exelon Generation Company. LLC

3. NPDES FPermit #PAOO51 928 Limerick Generating Station 200 Exelon Way Kennett Square, PA 19348 Tel: 610-765-5904 Fax: 610-765-58(7

4. Facility Address and Location Street 3146 Sanatoga Road, Pottstown, PA 19464 Municipal ty Limerick Township County Montgomery VISUAL INS'PECTION Provide the following information for the storm event

5. Duration -

6. Estimation of rainfall (in inches) t t The annual inspection should be conducted after a storm event that is greater than 0.1 inches inmagnitude and that occurred at least 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months frcm the previous 0.1 inch storm event.

7. Estimate the time between the previous rain event

8. Estimate tie total volume (in gallons) for each outfall and report it in item 9.

Volume = C x I A, where C is the runoff coefficient (i.e. 0.9 for paved and 0.5 for unpaved)

I is the rainfall amount (in ft), and A is the area (square feet) drained to the outfall inspected i.convert from cubic feet to gallons by multiplying by 7.481).

9. Estimate the size of the drainage area (in square feet) for each outfall.

Outfall # Drainage Area % Paved % Unpaved Volurne In gallons

. F . .

3800-PM-WSWM0083v Rev. 612004 Annual Inspection Complete the following information for each outfall inspected (items 10 through 15)

VISUAL INSPECTION OF OUTFALL NUMBER

10. Description of area(s) that drains to outfall.

11. Description of stormwater management practices, erosion and sedimentation control practices, and other structural control measures that are in place to control pollutants from running off-site.

12. Is there visible flow from the pipe? Yes No (Go to number 14) Pipe Dia. (inches)

a. ODOR: Chemical Musty Sewage Rotten Eggs Other

b. COLOR: Clear Red Yellow Brown Other

c. CLARITY: Clear Cloudy Opaque Suspended Solids Other_

d. FLOATABLES: Suds Oily Film Garbage Sewage Other_

e. DEPOSITS/STAINS: None Oily Sediment Other

f. VEGETATION: None Normal Excessive Inhibited Other

13. Is there standing water present? E Yes [D No (Go to number 16)

a. ODOR: Chemical Musty Sewage Rotten Eggs Other

b. COLOR: Clear Red Yellow Brown Other

c. CLARITY: Clear Cloudy Opaque Suspended Solids Other

'd. FLOATABLES: Suds Oily Film Garbage Sewage Other

e. DEPOSITSISTAINS: None Oily Sediment Other

f. VEGETATION: None Normal Excessive Inhibited Other

14. Is there any evidence of or potential for any pollutant being discharged at this outfall? E Yes L No Describe.

If yes, identify substances present in the sediment (if possible).

15. Description of corrective measures taken or planned to remove sediments or debris if found during inspection. Please provide a schedule if actions are planned.

3800-PM-WSWVM0083v Rev. 6/2004 Annual Inspection COMPREHENSIVE SITE COMPLIANCE EVALUATION

16. Do drainage maps reflect current conditions? E Yes No If no, provide your comments.

Comments:

17. Based on review of PPC Plan (including Housekeeping Measures), are any changes, corrections or updates necessary? L] Yes D No If yes, prcvide your comments.

Comments:

18. Have you inspected all structural stormwater controls used to implement the PPC Plan to determine if they are adequate? E] Yes R No If no. provide your comments.

Comments:

19. Have you inspected the entire site to determine if erosion and sedimentation control measures are adequate? Yes l No If no, prov de your comments.

Commenti;:

20. Summarize corrective actions/measures completed or planned to correct any deficiencies found as a result of the inspection. Please provide a schedule it actions are planned.

21. Signature of Inspector Name of Inspector:

Date Report P.'epared:

Signature of Inspector:

24. Signature of Owner/Operator of Facility Name/Title Principal Executive Officer Signature Date I CERTIFY UNDt:R PENALTY OF LAW THAT I HAVE PERSONALLY EXAMINED AND AM FAMILIAR WITH THE INFORMATION SUBMITTED HEREIN AND BASED ON MY INQUIRY OF THOSE INDIVIDUALS IMMEDIATELY RESPONSIBLE FOR OBTAINING THE INFORMATION. I BELIEVE THE SUBMITTED INFORMATION IS TRUE. ACCURATE AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION INCLUDING THE FOSSIBILITY OF FINE AND IMPRISONMENT SEE 18 Pa. C.S. §4904 (relating to unsworn falsification).

To Calculate NI.Iss of Pollutants For a Sampling Event Use the sampling event reported concenlration and perform the appropriate calculation as follows:

concentratic'n (pgi. x 0.008;4 x ______ flow (million gallons/day) = lb,'day I_

or concentration (mgil) x 8.34 x _ flow (million gallors/day) - __ biday The value assigned t) -flow (million gallonsiday)" should be the 24-hour average flow for the outfall on the day the sample wa; taken. Where an oun'all discharges for only part of a day (x hours), the daily mrriss value should be detenuined by using the .-hour averase flow.

To Calculate an Arithmetic Averaae or Mean Use the following equation:

_ + XZ + X3 + X +...XV n = number of results X = value of each anaytical results For example.

five samples were analyzed, their results were 75, 82, 90. 70, and 85.

75 --82 + 90 + 70 + 85 580.4 To Calculate a Geometric Mean or Geometric Averzae (For Fecal Coliform Only)

Use the following equation:

nVXi x X 2x X 3x Xt x...Xv n = number of analvsis results ' Note: If any value of X is zero, substitute X = value of each analytical result a 1.0 for the calculation.

For example, five samples were analyzed. their results were 75. 82. 90, 70, and 85.

5J_

82 x 90 x 70 x 85 5,[/3,293,325,000 =80.1 rIN'Srl I>X

Paperwork Reduction Act Notice Public reporting burden for this collection of information is estimated to vary from a range of 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months as an average per response for some minor facilities, to 110 hours0.00127 days 0.0306 hours 1.818783e-4 weeks 4.1855e-5 months as an average per response for some major facilities, with a weighted average for major and minor facilities of 18 hours2.083333e-4 days 0.005 hours 2.97619e-5 weeks 6.849e-6 months per response, including time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding the burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Chief, Information Policy Branch, PM-223, U.S. Environmental Protection Agency, 401 M Street, SW, Washington, DC 20460; and to the Office of Information and Regulatory Affairs, Office of Management and Budget, Washington, DC 20503.

General Instructions

1. If form has been partially completed by preprinting, disregard instructions directed at entry of that information already preprinted.

2. Enter "Permittee Namel/failing Address (and facility name/location, if different)," "Permit Number" and "Discharge Number" where indicated. (A separate form is required for each discharge.)

3. Enter dates beginning and ending "Afonitoring Period" covered by form where indicated.

4. Enter each "Parameter"as specified in monitoring requirements of permit.

5. Enter "Sample Measurement" data for each parameter under "Quantity" and "Quality" in units specified in permit. "Average" is normally arithmetic average (geometric average for bacterial parameters) of all sample measurements for each parameter obtained during "Monitoring Period:" "Maximum" and "AMinimum" are normally extreme high and low measurements obtained during "Monitoring Period." (Note to municipals with secondary treatment requirement: Enter 30-day average of sample measurement under "Average," and enter maximum 7-day average of sample measurements obtained during monitoring period under "M'aximum. ")

6. Enter "Permit Requirement" for each parameter under "Quantity" and "Quality" as specified in permit.

7. Under "No Ex" enter number of sample measurements during monitoring period that exceed maximum (and/or minimum or 7-day average as appropriate) permit requirement for each parameter. If none, enter "0".

8. Enter "Frequency of Analysis" both as "Sample Measurement" (actual frequency of sampling and analysis used during monitoring period) and as "Permit Requirement" specified in permit. (e.g., Enter "Cont." for continuous monitoring, "1/7" for one day per week, /1/30" for one day per month, "1/90 " for one day per quarter, etc.)

9. Enter "Sample Type" both as "Sample Measurement" (actual sample type used during monitoring period) and as "Permit Requirement," (e.g., Enter "Grab" for individual sample, "24 IIC" for 24-hour composite, "N/A" for continuous monitoring, etc.)

10. Where violations of permit requirements are reported, attach a brief explanation to describe cause and corrective actions taken, and reference each violation by date.

II. If"no discharge" occurs during monitoring period, enter ",Vo Discharge" across form in place of data entry.

12. Enter "Name/Title of Principal Executive Oficer" with "Signature of Principal Executive Officer of Authorized Agent,"

"Telephone Number" and "Date" at bottom of form.

13. Mail signed Report to Office(s) by date(s) specified in permit. Retain Copy for your records.

14. More detailed instructions for use of this Discharge Monitoring Report (DMR) form may be obtained from Office(s) specified in permit.

Legal Notice This report is required by law (33 U.S.C. 1318; 40 C.F.R. 125.27). Failure to report or failure to report truthfully can result incivil penalties not to exceed S10,000 per day of violation; or in criminal penalties not to exceed S25,000 per day of violation, or by imprisonment for not more than one year, or by both.

EPA Form 3320-1 (Rev. 9-88)

ML061160171

Contents

Text

Subject:

Attachment:

Dearborn Depositrol BL5307 100 3,

Dearborn Depositrol PY5204 1,

Dearborn Spectrus BD1500 932 5,

Dearborn Spectrus DT1400 42 9,

Dearborn Inhibitor AZ8104 300 1,

Navigation menu

ML061160171

Text

Subject:

Attachment:

Dearborn Depositrol BL5307 100 3,

Dearborn Depositrol PY5204 1,

Dearborn Spectrus BD1500 932 5,

Dearborn Spectrus DT1400 42 9,

Dearborn Inhibitor AZ8104 300 1,

Navigation menu

Search