ML20217P194

Annual Environ Operating Rept (Non-Radiological) for Jan-Dec 1997, for LGS Units 1 & 2

ML20217P194
Person / Time
Site:	Limerick
Issue date:	12/31/1997
From:	PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20217P168	List: ML20217P163 ML20217P194
References
NUDOCS 9805060151
Download: ML20217P194 (8)

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_imerick Generating S:ation Annual Environmental Operating Report 1

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i LIMERICK GENERATING STATION UNITS 1 AND 2 1997 ANNUAL ENVIRONMElffAL OPERATING REPORT (NON-RADIOLOGICAL)

JANUARY 1997 - DECEMBER 1997 i

l FACILITY OPERATING LICENSE NOS. NPF-39, NPF-85 DOCKET NOS. 50-352, 50-353 PECO ENERGY COMPANY 1

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Limerick Generating Station 1997 Annual Environmental Operating Report (Non-Radiological)

1. Introduction This report describes the implementation of the Environmental Protection Pian (EPP),

LGS Appendix B Technical Specifications, from January 1,1997 through December l 31,1997.

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

l 2.0 Enviramnantal Protac*ian Activi* lac 2.1 Aanatic Monitarine t

' The Environmental Protection Plan stat:s 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 acconiance with the requirements of Section 3 of the Permit, monitoring ,

results were summariveA for each month and reported on Discharge l l Monitoring Reports (DMR) which were submitted to the PaDEP and US l EPA.

1 A summary of the results as reported in the monthly DMR's is presented in Table 1 for discharge points at the Limerick Station and the Bradshaw Reservoir discharge to the East Branch Perkiomen Creek. In addition, i studies of corbicula, Zebra mussels, and water quality sampling and observations at Still Creek and Owl Creek Reservoirs were performed in support of LGS in 1997.

Periodic inspections of the Still Creek and Owl Creek reservoirs and receiving streams revealed no sign ofincreased erosion, sedunentation, 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 Greaterford, and the two boat ramp locations on the Schuylkill; upstream near Limerick Island and downstream from the Cromby Generating Station. Concrete blocks were placed in the water at each location and later inspected for colonization. No zebm mussels were found, although dense populations of Asiatic clams were observed on the Schuylkill as well as throughout the diversion system (including 1

l Limerick Generating Station 1997 Annual Environmental Operating Report (Non-Radiological)

Bradshaw Reservoir and near the outfall structure on the East Branch Perkiomen Creek).

Fish tissue samples were collected as part of tiw Radiological Environmental Monitoring Program biannually on the Schuylkill River, both upstream and downstream. These collections allowed for a descriptive assessment of the fish community in the vicinity of Limerick.

Most common were spottail, spotfin, and common shiners, carp, white sucker, redbreast and pumpkinseed sunfish, smallmouth and largemouth bass, brown and yellow bullhead, and channel and white catfish. Both species of bass appeared to be more common than previously observed as were white and channel catfish. The species composition upstream and downstream of Limerick appeared to be similar.

2.2 Terrestrial Monitorine No terrestrial monitoring is required.

2.3 Maintan=aca of Trnn==iiccion Lina Corridans Transmission line maintenance records concerning herbicide use are being maintained by the PECO Energy Company Consumer Energy Services Group - Power Delivery Division (Electric Transmission and Distribution Department). As required by the LGS Appendix B Technical Specifications, Section 4.2.3, these records can be made available to the NRC upon request.

2.4 Noise Monitorine All noise surveys required by the LGS Final Environmental Statement, Section 5.14.4, Atomic Safety Licensing Board (ASLB) ruling LBP 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-radiological). No further noise monitoring is required per LGS Appendix B Technical Specifications, Section 4.2.4.1.

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Limerick Generating station

- 1997 Annual Environmental Operating Report (Non-Radiological) 2.5 Envir-==*=1 Pratmettan Piqa There were no Environmental Pre:ction Plan (EPP) non<ompliances  ;

identified by the Nuclear Quality Assurance Department or by Station l Self-Assessment in 1997.

1 2.6 Channes in Statian Damien or Operatian. Tests or Ernerinmnts There were no changes in the Limerick Generating Station design or operation and performance of tests or experiments that required an Environmental Evaluation in accordance with the requirements of Section 3.1 of the Environmental Protection Plan. ,

1 2.7 Non-routine Renorts Subani+*ad Two non-routine reporte containing three incidences of non-compliance were submitted in accordance with EPP Section 5.4.2. Copies of all letters were supplied to the NRC.  !

1. On February 28,1997, the Spray Pond flow integrator wa:

identified to be malfunctioning and was declamd inoperable. A subsequent evaluation determined that it had been inoperable since January 7,1997. This instrument, required by Part A of the permit, is used to measure the contribution of Spray Pond flow to the total integrated flow at Discharge 001. Once i identified, an alternate method of ficw determination was used.

Repairs wem completed on Erch 6,1997 when the instrument was declared operable. The malfunction was caused as a result of debris lodged within the instrument's flow port. An Engineering Change Request (ECk) has been initiated for the design and installation of a screen at the Spray Pond overflow weir to minimize debris enteriq: the flow integrator. A notification letter was sent on March 27,1997

2. On May 12,1997, the unit I cooling tower overflowed thereby requiring sampling at Outfall 021. During the transfer of data from the chain af custody (COC) sheet to the sample bottle label, the requirement to analyze for Kjeldahl nitrogen was omitted.

This event was determined to have been caused by personnel error. The NPDES Permit only requires this parameter to be moniton:d and reportea with no limitation specifled. A notification letter was sent on June 27,1997.

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1 Limerick Generating Station l 1997 Annual Environmental Operating Report l (Non-Radiological)

3. On May 21,1997, the net Total Suspended Solids (TSS) for the  ;

cooling towers was identified to be 82.3' ppm, thereby exceedmg i the NPDES daily limit of 60 ppm. This elevated TSS reading also caused the monthly average of 30 ppm to be exceeded. This elevated TSS daily limit has two causal factors. The Schuylkill River TSS levels had recently spiked due to transient conditions related to storm mn-off, resulting in unusually high turbidity in the cooling tower make up water. Also, the sample line had accumulated solids which were purged into the sample during its collection. Although nothing can prevent elevated TSS levels due l

to weather and river conditions, the sample tubing was replaced  ;

and will be changed out semi-annually. A notification letter was sent on June 27,1997.

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