ML20138J529

Annual Environ Operating Rept (Non-Radiological) for Jan- Dec 1996

ML20138J529
Person / Time
Site:	Limerick
Issue date:	12/31/1996
From:	Walter MacFarland PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9705080241
Download: ML20138J529 (10)

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m W lt: G.MacFtritnd,IV, P.E.

Vice hesident Lernerick Generating Staten v

PECO NUCLEAR esco emerov ce-n "v PO Box 2300 A UMr or PECO ENrsct S natoga. PA 19464-0920 610 718 3000 Fax 610 718 3008 Pager 1800 672 2285 #8320 EPP 5.4.1 April 24, 1997 Docket Nos.

50-352 50-353 License Nos. NPF-39 NPF-85 Attn:

Document Control Desk U.

S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

-Limerick Generating Station, Units 1 and 2 1996 Annual Environmental Operating Report (Non-Radiological)

Gentlemen:

Attached is the Limerick Generating Station, Units 1 and 2, 1996 Annual Environmental Operating Report (Non-Radiological).

This report is being submitted in accordance with Section 5.4.1 of Appendix B of the Facility Operating Licenses, Environmental Protection Plan (EPP) (Non-Radiological), and describes the implementation of the EPP for 1996.

If you have any questions, please do not hesitate to contact us.

Very truly yours, A

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Attachment cc:

H. J. Miller, Administrator, Region I, USNRC (w/ attachment)

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S. Perry, USNRC Senior Resident Inspector, LGS

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Esft?GY Limeric< Genera:inc Station Annual Environmental Operating Report l

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LIMERICK GENERATING STATION UNITS 1 AND 2 ANNUAL ENVIRONMENTAL OPERATING REPORT (NON. RADIOLOGICAL)

FOR JANUARY-DECEMBER 1996 FACILITY OPERATING LICENSE NOS. NPF-39, NPF-85 DOCKET NOS. 50 352,50-353 PECO ENERGY COMPANY

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Limerick Generating Station 1996 Annual Environmental Operating Report (Non-Radiological) 1.0 Introduction 4

This report describes the implementation of the Environmental Protection Plan (EPP), LGS Appendix B Technical Specifications, from January 1,1996 through j

l December 31,1996.

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4 Provided herein are summaries and results of the environmental protection activities required by Subsection 4.2 of the EPP.

2.0 Environmental Protection Activities 2.1 Aauatic Monitoring The Environmental Protection Plan states that the NRC will rely on decisions made by the Commonwealth of Pennsylvania, under the authority of the Clean Water Act, for any requirements for aquatic monitoring. Industrial waste NPDES Permit PA 0051926 provides the mechanism for protecting water quality and, indirectly, aquatic biota. In accordance with the requirements of Section 3 of the Permit, monitoring results were summarized for each month and reported on Discharge Monitoring Reports (DMR) which were submitted to the PA DEP and US EPA.

A summary of the results as reported in the monthly DMRs is presented I

in Table 1 for discharge points at Limerick Station and Table 2 for the Bradshaw Reservoir discharge to the East Branch Perkiomen Creek. In addition, studies of corbicula and Zebra mussels, and water quality sampling and observations at Still cmek and Owl Creek Reservoirs were performed in support of LGS in 1996.

Periodic inspections of the Still Creek and Owl Creek mservoirs and receiving streams revealed no sign of increased erosion, sedimentation, or other environmental damage.

Spring, summer and fall surveys for the presence of zebra mussel were conducted at several points along the Point Pleasant water diversion route including the Delaware River at Point Pleasant, the intake on the Perkiomen Creek at Graterford, and the two boat ramp locations on the Schuylkill; upstream near Limerick and downstream from the Cromby Generating Station. Concrete blocks containing Plexiglas plates were placed in the water at each location and later inspected for colonization.

No zebra mussels were found, although dense populations of Asiatic clams were observed on the Schuylkill as well as throughout the diversion r~-ea--

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Limerick Generating Station 1996 Annual Environmental Operating Report 3

(Non-Radiological) i system (including Bradshaw Reservoir and near the outfall structure on j

the East Branch Perkiomen Creek).

Fish tissue samples were collected as part of the Radiological l

Environmental Monitoring Program biannually on the Schuylkill River, i

both upstream and downstream. These collections allowed for a j

descriptiu assessment of the fish community in the vicinity of Limerick.

Most comtwn were spottail, spotfin, and common shiners, goldfish, carp, white sucker, redbreast sunfish, rock bass, smallmouth and largemouth i

. bass, brown and yellow bullhead, and channel and white catfish. The species composition upstream and downstmam of Limerick appeamd to be similar.

2.2 Terrestrial Monitoring No terrestrial monitoring is required.

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Maintenance of Transmission Line Corridors Transmission line maintenance records concerning herbicide use are being maintained by the PECO Energy Company Consumer Energy

-I Services Group - Power Delivery Division (Electric Transmission and Distribution Department). As required by the LGS Appendix B Technical Specificadons, Section 4.2.3, these records can be made available to the NRC upon request.

2.4 Noise Monitoring All noise surveys reqaimd by the LGS Final Environmental Statement, Section 5.14.4, Atomic Safety Licensing Board (ASLB) ruling LBP-83-11, dated March 8,1983, and LGS Appendix B Technical Specifications, Sections 2.3 and 4.2.4 were completed in 1990 for Limerick Generating Station Unit 2 operation and Bradshaw Reservoir. These studies were reported on in the 1990 Annual Environmental Operating Report (Non-s radiological). No further noise monitoring is mquired per LGS Appendix l

B Technical Specifications, Section 4.2.4.1.

2.5 Environmental Protection Plan There were no Environmental Protection Plan (EPP) non-compliances identified by the Nuclear Quality Assurance Department or by Station Self-Assessment in 1996.

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Limerick Generating Station 1996 Annual Environmental Operating Report (Non-Radiological)

J 2.6 Channes in Station Design or Operation, Tests or Experiments There were no changes in the Limerick Generating Station design or operation and performance of tests or experiments that required an l

Environmental Evaluation in accordance with the requirements of Section 3.1 of the Environmental Protection Plan.

l 2.7 Non-routine Reports Submitted Twelve non-routine reports were submitted in accordance with EPP Section 5.4.2. Copies of allletters were supplied to the NRC.

1. A letter dated February 28,1996 was issued for non-compliance with NPDES Permit No. PA 0051926 which occurred on November 8,1995.

Discharge 001 (cooling tower blowdown) exceeded the maximum daily limit for net TSS( Total Suspended Solids).

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2. A letter dated March 28,1996 was issued for non-compliance with NPDES Permit No. PA 0052221 relating to the Bradshaw Reservoir discharge water temperature records. The permit requirements of Part C, Section G include discharge water temperature to be continuously monitored and recorded. Temperatures were continuously monitored but records were intermittently obtained during these time periods.

3. A letter dated April 28,1996 was issued for non-compliance with LGS NPDES Permit No. PA 0051926 and Bradshaw Reservoir NPDES Permit No. PA 0052221. This letter describes the results of the February 23,1996 audit of NPDES activities at the Limerick Generating Station performed by the PECO Energy Corporate Environmental Group. This audit was performed as part of routine self assessment activities and was to ensure capture of lessons learned the from NPDES Permit compliance issues at other PECO Energy facilities. The audit team identified seven issues of l

administrative non-compliance. There were no potential / actual impacts on the environment as a result of these permit issues.

4. A letter dated April 28,1996 was issued for non-compliance with LGS NPDES Permit No. PA 0051926. On March 14,1996, approximately 20 to 30 gallons of sewage flowed from an overflowing manhole MH-07 into storm drain W-4. Sandbags and gravel were positioned to direct the spill to a holding pond for evaluation prior to release.

5. A letter dated June 24,1996 was issued for non-compliance with LGS -_

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Limerick Generating Station 1996 Annual Environmental Operating Report i

(Non-Radiological) j NPDES Permit No. PA 0051926. The flow integrator used to measure Spray Pond effluent flow, a component of the total 001 discharge flow j

mported monthly, was declared inoperable on March 18,1996. This meter was subsequently mturned to service after repairs on June 6,1996.

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6. A letter dated July 12,1996 was issued for non-compliance with LGS NPDES Permit No. PA 0051926, Discharge 001 net TSS in excess of the f

maximum daily limit. The msulting TSS value for June 19,1996 was 82.8 mg/1. This event was similar to that stated in paragraph #1 above -

g (excessive storm water rtmoff on June 18,1996).

7. A letMr dated July 24,1996 was issued for non-compliance with t

Bradshaw Reservoir NPDES Permit No. PA 0052221. The pH at the discharge of the Bradshaw Reservoir pumps was 9.1 on June 2,1996. The NPDES Permit limitations for pH are 6.0 minimum and 9.0 maximum.

An investigation concluded that natural biological activity in the j

Delaware River and the Bradshaw Reservoir associated with the spring

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aquatic plant life " bloom" caused the temporary high pH condition.

8. A letter dated August 26,1996 was issued for non-compliance with Bradshaw Reservoir NPDES Permit No. PA 0052221. On July 31,1996, Station personnel mported that the NPDES limit for fecal coliform concentration at the Bradshaw Reservoir pumps discharge into the east branch of the Perkiomen Creek was not met.

9. A letter dated September 27,1996 was issued for non-compliance with Bradshaw Reservoir NPDES Permit No. PA 0052221. During the month of August 1996, the NPDES limit for fecal coliform concentration at the Bradshaw Reservoir pumps discharge into the east branch of the Perkiomen Creek was not met. This non-conformance is similar to the one reported in paragraph number 8 above. On September 17,1996 the j

ozone disinfection system entered a maintenance outage to mplace the seals on all 32 diffusers.

10. A letter dated October 28,1996 was issued for non-compliance with Bradshaw Reservoir NPDES Permit No. PA 0052221. Durmg the month of September 1996, the NPDES limit for fecal coliform concentration at the

'Bradshaw Reservoir pumps discharge into the east branch of the Perkiomen Creek was not met on September 30,1996.

11. A root cause analysis follow-up letter dated November 27,1996 was issued addressing the Bradshaw Reservoir NPDES Permit No. PA 0052221 non-compliances for July, August, and September 1996. 0

I.imerick Generating Station fnmentalOperating Report (N n-d olo i

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12. A letter dated December 24,1996 was issued describing five non-compliances identified from the external audit of NPDES Permit No. PA 0051926. In the letter dated April 28,1996 PECO Energy coramitted to performing a comprehensive audit of the implementation of the LGS 3

NPDES Permit. PECo elected to perform this audit to evaluate total program compliance against lessons learned from the PADEP DMR training seminar and other PECo experiences. As a result, five issues 4

were identified and a corrective action plan was developed to address i

each issue. None of these issues involve any adverse enviranmental impact. retention provisions of the NPDES Permit.

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l Table 1. Yearly mean and range or maximum (as appropriate) of parameters in the 1996 discharge monitoring reports for Limerick Generating Station.

NPDES Permit PA 0051926 Descharge Points (Limenck)

• PARAMETER 001 201 MP105 021 023 Average Monthly Flow, MGD Mean 7.821 0.251 0.300 0.001 0.019 Maximum 8.921 0.330 0.300 0.001 0.060 Etd Dev 0.610 0.042 0.028 Maximum Daily Flow, MGD Mean 10.108 0.678 0.300 0.001 0.054 Maximum 11.663 0.869 0.300 0.001 0.150 Std Dev 0.797 0.162 0.070 Total Suspended Solids, mgM Mean

-17.9 14.0 33.0 6.8 37.8 Maximum 82.8 50.6 33.0 6.8 43.8 Std Dev 56.9 6.0 21.3 Discharge Temperature, F Maximum Daily Mean 76.2 NR "

57 NR 69.0 Maximum 91.0 NR 57 NR 73.0 Std Dev 8.4 NR NR 2.9 Total Residual Oxidants, mgh Maximum Daily Mean 0.05 NR NR NR ND Maximum 0.14 NR NR NR ND Std Dev 0.04 NR NR NR ND Zine - Total, mga Mean 0.4 NR 0.275 NR 0.59 Maximum 0.5 NR 0.275 NR 0.37 Std Dev 0.1 NR NR 0.15 Copper - Total, mgh Mean 0.08 NR 0.07 NR 0.17 i

Maximum 0.11 NR 0.07 NR 0.08 Std Dev 0.02 NR NR 0.04 Inlet Temperature, F Maximum Daily Mean 63.1 NR NR NR NR Maximum 77.0 NR NR NR NR Std Dev 12.4 NR NR NR NR Hydrothol-191, mr,A Mean NR NR NR NR NR Maximum NR NR NR NR NR Std Dev NR NR NR NR NR Page 1 of 2

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4 Betz - 3625, mg/l Mean 0.04 NR NR NR NR Maximum 0.10 NR NR NR NR Std Dev 0.03 NR NR NR NR Clamtrol-CT1, mg/l Mean NR NR NR NR NR Maximum NR NR NR NR NR Std Dev NR NR NR NR NR pH, Instantaneous Maximum Maximum 8.5 NR 8.12 8.1 8.2 pH, instantaneous Minimum Minimum 8.0 NR 8.12 8.1 7.9 Phosphorus as P, mg/l Mean 1.11 NR 1.135 0.06 0.84 Maximum 2.98 NR 1.135 0.06 0.91 Std Dev 0.33 NR 0.30 Oil and Grease, mg/l Mean NR 1.8 NR NR NR Maximum NR 9.2 NR NR NR Std Dev NR 0.5 NR NR NR 1

iron - Dissolved, mg/l Mean NR 1.8 NR 0.1 NR Maximum NR 9.2 NR 0.1 NR Std Dev NR 0.5 NR NR

• In 1996 there were no discharges from discharge points: 101, 020, 002, 003, 004, 005, 006, 007, 008, 009, 012, and 022. There was a discharge from point 301 but no chemical monitoring was required.

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" NR = Not Required l

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