ML20093G211

NMPNS SPDES Permit NY-000-1015 Discharge Monitoring Rept Comments & Repts of Noncompliance Events for Period of Jan- June 1995

ML20093G211
Person / Time
Site:	Nine Mile Point
Issue date:	06/30/1995
From:	NIAGARA MOHAWK POWER CORP.
To:
Shared Package
ML20093G204	List: ML20093G201 ML20093G211
References
NUDOCS 9510180345
Download: ML20093G211 (35)

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! NINE MILE POINT NUCLEAR STATION l

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STATE POLLUTION DISCHARGE

ELIMINATION SYSTEM (SPDES)

PERMIT NUMBER NY-000-1015 ,

l DISCHARGE MONITORING REPORT I

l COMMENTS AND REPORTS OF NON-COMPLIANCE EVENTS l FOR PERIOD OF

JANUARY 1,1995 THROUGH JUNE 30,1995 i

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Explanatory Note: Regarding " NODI C" In the case where there is no discharge of a certain parameter, at any time during the entire monitoring period, the permit:ee shall enter " NODI C", meaning no discharges in the appropriate sample measurement

box (es).

The permittee shall provide an explanation of the

" NODI C" notation by attaching said explanation to the original DMR to be returned to BWFO- Source Surveillance Section in the Albany Office. As an alternative to this, the permittee may provide such explanation in the, " Comment and Explanation of any Violations" section of the DMR itself.

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• From New York State Department of Environmental Conservation Publication:

DMR Manual: For Completing the Discharge Monitoring Reoort of the National Pollution l Discharge Elimination System (14YPDES), January 1994.

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. 1 DISCHARGE MONITORING REPORT

, PERMIT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION JANUARY 1995 COMMENTS UNIT 1

1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 1 Outfall 010 as there were no ,

Clam-Trol or Actibrom (TRO) additions during January 1995. Also, " NODI C" was noted for Outfall 010 Total Copper as a grab sample is only to be obtained during condenser tube cleaning operations.

However, a January baseline grab sample result for Total Copper was <0.02 mg/L. l

2. As noted in the December 1994 DMR comments for Outfall 020 (Unit 1 Storm Water Drainage), the action level for iron was exceeded. The short-term, high intensity monitoring program for this parameter continued through January and into February. The results of this monitoring will be submitted by the end of March 1995, as required by the Permit. ,

UNIT 2

3. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 2 Outfall 040 as there were no Clam-Trol or Copper-Trol additions during January 1995.

6 (AMS95.017)

DISCHARGE MONITORING REPORT PERMIT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION FEBRUARY 1995 CDMMENTS UNIT 1 i

1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 1 Outfall 010 as there were no Clam-Trol or Actibrom (TRO) additions during February 1995.

2. For the Sewage Treatment Plant Outfall 030, results of the two required fecal coliform samples collected for the month of February 1995 were 13/100ml and > 1600/100ml, resulting in a 30 day geometric mean of > 144/100ml. The contractor laboratory that performed the analysis did not 4

produce an actual number. The > 1600/100ml result would have had to exceed 3079/100ml to have resulted in an exceedence of the 200/100ml permit limit.

This result was called into the Department (Region 7) on March 15, 1995. Based on a review of our SPDES Permit and DMR forms, it was concluded by the Department that this > 144/100ml value did not represent an excursion, but should be noted as a written comment in the DMR.

4 The next fecal coliform result for 3/7/95 was 8/100ml and Niagara Mohawk has instructed the-contractor laboratory to run all future fecal coliform analysis such that an actual numerical value is produced and aql a greater than value. )

' During the current Unit I refuel outage, a zebra mussel cleaning / removal operation was conducted in I 3.

the Unit I forebay. Discussions were held with the Department on February 23,1995 and a meeting i on 2/24/95 in the regional office regarding the evolution of this operation. As a result, a summary report related to this cleaning operation and restart of the circulating water pumps will be provided to the Department approximately thirty days after the end of the Unit I refuel outage (on or about mid-

May 1995).

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4. As noted in the December 1994 DMR comments for Outfall 020 (Unit 1 Storm Water Drainage), the action level for iron was exceeded. The short-term, high intensity monitoring program for this parameter continued through January and into February. The results of this monitoring are summarized as follows and submitted as required by the Permit.

While the high intensity short-term monitoring program requires samples to be collected on at least three operating days, five samples were collected from the Outfall, as well as two background samples.

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1 DISCHARGE MONITORING REPORT PERMIT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION FEBRUARY 1995 COMMENTS Hieh Intensitv/Short-term Monitorine Results Sampline Date Sampling Location Result 1/09/95 End of Discharge Pipe 0.408mg/L 1/16/95 End of Discharge Pipe 0.592mg/L 1/23/95 End of Discharge Pipe 0.981mg/L 1/30/95 End of Discharge Pipe 0.257mg/L 2/06/95 End of Discharge Pipe 0.234mg/L 1

Background Samoles On 1/11/95, a sample was collected (prior to the water softener) from a local resident's well located approximately 1.5 miles west of Outfall 020 and on 1/16/95, a sample of ground water was collected from the discharge of the Unit 2 Reactor Building perimeter drain in an effort to determine representative ground water iron levels at and near the Nine Mile Point site. The well water sample had an iron level of 0.286mg/L and the Unit 2 reactor building perimeter drain had an iron level of 0.107mg/L.

Continuing Evaluation Further investigation led to discussions between Nine Mile Point Environmental Protection staff and the Oswego County Health Department to determine if the Health Department had any knowledge of high iron levels in the local water table. According to Ms. Michelle Benton of the Health Department's Environmental group, the lake shore area of Oswego county does have localized areas of high concentrations of ferrous bacteria which could be responsible for Nine Mile Point fluctuating iron results. NMPC is considering sampling to confirm this as well as more generally determining total recoverable vs dissolved iron in the effluent.

In addition, it should be noted that Unit 2 Outfall 040 (Cooling Tower and Service Water), which is a once-through cooling water system, has a quarterly iron action level of 1.0mg/L. Therefore, it is Niagara Mohawk Power Corporation's position that the quarterly action level for iron for Outfall 020 should be raised from the present level of 0.3mg/L, which is the State Water Quality Standard, to 1.0mg/L to be consistent with Outfall 040.

UNIT 2

1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 2 Outfall 040 as there were no Clam-Trol or Copper-Trol additions during February 1995.

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4 DISCHARGE MONITORING REPORT PERMIT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION FEBRUARY 1995 COMMENTS UNIT 2 (cont.)

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2. On February 14,1995, an overflow of the Unit 2 cooling tower basin occurred. The copper concentration and pH value were within the permit limits and these parameters are reported on the attached DMR forms for Outfall 025. Based upon direct observation of the overflow and it's duration, the total volume discharged is estimated to be approximately 60,000 gallons. Since the flow reporting frequency for this Outfall is annual, the flow will be reported on the appropriate DMR form when it becomes available.

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(AMS95.018) l t

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PERMIT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION MARCH 1995 =

COMMENTS UNIT 1

1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 1 Outfall 010 for Betz Clam-Trol [

and Actibrom (TRO) as there were no Clam-Trol or TRO additions during March 1995.

2. The copper discharge limitation of 0.25mg/L Outfall 010 was exceeded on March 25,1995, when a sample was collected following restart of the circulating water pumps at 18:15 hours. The resulting analysis indicated a copper level of 0.468 mg/L. The source of this copper is attributed to condenser cleaning activities', which had occurred during the refueling outage. This information was telephoned into the Region 7 Office on March 28,1995 to Mr. Kevin Hanif'm following our notification by our contractor laboratory of the. result. A written follow-up notification was provided to Mr. William McCarthy on March 29,1995 (Attachment I).

Subsequent to the isolation of the circulating water pumps on March 26,1995, copper samples were taken on March 28,1995 and again when the pumps were restarted on March 30,1995. The sample taken on March 28,1995 and all samples taken during the one hour period post restart on March 30, 1995 were all below the outfall permit limit (<0.020 mg/L to 0.028mg/L). Therefore, the initial high results (during the initial restart of the circulating water pumps on March 25,1995) represented a flushing action. See the attached Noncompliance Form (Attachment II) for more details.

3. During the first quarter of 1995, Quarterly Action Level samples were obtained for applicable outfalls as described on page 7 of 16 of the Nine Mile Point SPDES Permit. As noted in the cover letter, i these results are reported on the applicable DMR (V) forms. One action level (iron for Outfa11020 Unit 1 Storm Water Drainage) was exceeded. The immediate corrective action wa ; to begin a short-i term, high intensity monitoring program for this parameter, as described on page 7 of 16 of the

Permit.

! Hinh Intensitv/Short-Term Monitorine Results

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i Samoline Date Samoline Location Result l 4

2/13/95 End of Discharge Pipe 0.712mg/L 2/20/95 End of Discharge Pipe 0.495mg/L 2/27/95 End of Discharge Pipe 0.655mg/L l 2/27/95 Last Manhole Before End of Discharge Pipe 0.869mg/L*

! 3/09/95 End of Discharge Pipe 0.215mg/L" L

NOTE:

• Sampling from the last manhole prior to the end of the discharge pipe did not yield any significantly different results.

" Result below action level limit.

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DISCHARGE MONITORING REPORT PERMIT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION MARCH 1995 COMMENTS

3. (cont.)

The above results satisfy the requirements of the short-term, high intensity monitori , fogtum for the higher than action level value of February 13, 1995.

In addition, it should be noted that Unit 2 Outfall 040 (Cooling Tower and Service Water) has a c;6arterly iron action level of 1.0mg/L. Therefore, Niagara Mohawk Power Corporation will continue to monitor and evaluate the quarterly action level for iron for Outfall 020 and, if it is deemed y appropriate, NMPC will prepare a permit modification request to raise the present level of 0.3mg/L to 1.0mg/L to be consistent with Outfall 040.

4. As noted in the February 1995 DMR comments, a zebra mussel cleaning / removal operation was conducted during the recently completed Unit I refuel outage. Zebra mussel cleaning / removal activities were completed on March 1,1995 in accordance with a plan discussed with the Department in a meeting on February 24,1995 in the regional office. As outlined in the plan, the Outfall 010 suspended solids were monitored following the restart of one of the circulating water pumps on March 25,1995 at 1815 hours0.021 days <br />0.504 hours <br />0.003 weeks <br />6.906075e-4 months <br />. The results of this monitoring, submitted to the region under separate letter on March 27,1995 are as follows:

Pre-circulating water pump operation

< l.0 mg/L Post circulating water pump operation Initiation 15 mg/L T + 15 min 908 mg/L T + 15 min 937 mg/L T + 30 min 229 mg/L T + 60 min 18 mg/L The above monitored increase and following decrease in suspended solids level represents a post

. circulating water pump restart flushing action.

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. DISCHARGE MONITORING REPORT 4 PERhDT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION MARCH 1995 COMMEtGS

4. (cont.)

Additionally, Outfall 010 suspended solids were monitored daily for the remainder of the month and for one hour following restart of the circulating water pumps on March 30,1995 at 1215 hours0.0141 days <br />0.338 hours <br />0.00201 weeks <br />4.623075e-4 months <br /> for plant start-up. These results are as follows:

Daily Menitorine Post Restart Monitorine Dals Results Timg Results

3/26/95 0.8 mg/L + 5 min 5.2mg/L 3/27/95 0.5 mg/L +15 min < 4mg/L 3/28/95 0.2 mg/L . +30 min < 4mg/L 3/29/95 0.0 mg/L +60 min < 4mg/L 3/30/95 0.2 mg/L l 3/31/95 1.2 mg/L -

Suspended solids is not an effluent parameter for Outfall 010. It was determined at the February 4 meeting that the performance of the forebay cleaning activities and start up of the circulating water pump would not be considered violations of our SPDES Permit provided we conducted the activities in accordance with the outline provided at the meeting. As a result, a complete summary report related to this cleaning operation and restart of the circulating water pumps will be provided to the i Department after the end of the Unit I refuel outage (on or about mid-May 1995).

UNIT 2 '

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1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 2 Outfall 040 for Betz Clam-

? Trol, as there were no Clam-Trol additions during March 1995.

2. The Unit 2 strip chart recorder used to measure outfall 040 (Cooling Tower Blowdown and Service Water) discharge flow, intake / discharge temperature difference and discharge temperature was inoperable for short periods in March 1995, due to testing / calibration. Maximum water flow and/or temperature data for the period prior to or following the testing / calibration were used during these periods.

4 (AMS95.025) a 4

ATTACIDENT I g y ggg RUMOHAWK NINE MILE POINT NUCLEAR STATION /P O BOX 63. LYCOMING, NEW YCAK 13093/ TELEPHONE (315)J43-2110 March 29, 1995 William F. McCarthy, P.E.

Environmental Engineer II New York. State Department of Environmental Conservation 615 Erie Boulevard West Syracuse, New York 13204-2400

SUBJECT:

Nine Mile Point Nuclear Station SPDES Permit No. NY 000 1015 Outfall 010 Copper Exceedence

Dear Mr. McCarthy:

This letter will serve as a written follow up to my telephone notification on March 28, 1995 at 14:55 hours to Mr. Kevin Hanifin of your office regarding the exceedence of the Daily Max.

Discharge Limitation for copper on outfall 010. A sample was taken for the subject outfall on March 25, 1995 at 18:20 hours 4

following the start up of one of the circulating water pumps (March 25, 1995 at 18:15 hours). The sample was analyzed by a l vendor laboratory and the results were telephoned to a member of my department on March 27, 1995 at 17:30 hours. The result for copper was 0.468 mg/1. The Permit Daily Max. Discharge Limitation for outfall 010 copper is 0.25 mg/1.

Condenser cleaning activities were performed from February 23, 1995 at 10:00 hours to March 4, 1995 at 22:00 hours during the Nine Mile Point Nuclear Station Unit One (NMP-1) refuel outage.

During the cleaning activities the condenser was dewatered and normal circulating water flow was isolated in support of a j forebay cleaning for zebra mussels. The condenser tubes were l cleaned using a pressurized water lance and the water and sludge l was collected inside of the outlet side of the condenser in a temporarily bermed area. The water was continually pumped from this location to storage tanks outside of the building and on March 6, 1995 the sludge was also pumped to the storage tanks. ,

The wastes will be sent to facilities which are permitted to '

handle these types of wastes.

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ATTACIDENT I (Cant) 5 ,

W. McCarthy, P.E.

NYSDEC, 3/29/95 Page 2 Residual copper fromLthe tube cleaning activities is the cause of the exceedence. Condenser tube cleaning activities have been completed. Following the initiation of the circulating water

- flow, the suspended' solids were also measured at the discharge-for the subject outfall and the solids level subsided withir approximately one hour. . Therefore, it is believed based on the behavior of the solids in the discharge folicwing the initiation of the circulating water flow, that the conditions. causing the exceedence are not continuing and recurrence is not expected.

Additionally, the circulating' water pumps were again isolated on March 26, 1995 at'07:10 hours to support other plant tests

< associated with the restart of NMP-1.

The discharge for outfall 010 was sampled during the cleaning i time frame (February 28, 1995) when the circulating water pumps were isolated and the condenser had drained to balcw the level of the tubes. During this time, only one service water pump was

- operating and discharging to the outfall 010 discharge. No water was ficwing through the condenser. The copper result on the sample was < 0.020 mg/1, indicating that no copper contamination from the condenser was affecting the outfall. The outfall was

! again sampled on March 28, 1995 when conditions were the same as just described with the circulating water pumps isolated. The i copper result was the same, < 0.020 mg/1, indicating that no copper contamination was affecting the outfall when the circulating water pumps were isolated. The outfall will be resampled for copper when circulating water flow is re-established. The start up has been planned for the last week of March.

j If you have any questions relative to this matter, please contact me at (315) 349-1456.

Sincerely, Qg M', iL y > . '

Anthody M. Salvagno Acting Supvr. Env. Protection

. j xc L.C. Flocke, NYSDEC

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- ATTACHMENT II i

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, f SECMONI i

New York State Devartment of Environmental Conservation _ g' Division of Water Mi Report of Noncompliance Event W'

To: DEC Water Contact 4t/,*//uru M/b-kr >

DEC Region: '7 1

En e s.v'or a Report Type: 5 Day ,/ Permit Wehesee Order Violation Anocipated Nor-9-e Bypasarovertlow 1

l SECT!ON 2 1

SPDESW: NY dev-/0/s' Facility: h d- Ne' ., / $ [ /[ ft [eb- b  ?

Date of noncompliance: i 'if 9 5' Locsoon t $ Treatment Unit. or Pump Station): 4/d Description of noncompliancess) and causetsi: 5.' e' /[Mc/[WI

$ j Has event ceased? h(No) If so, when? /542 0 /fr5 Was event due to plant upset? (Yes) h SPDES limits violsent?h'(No)

Start date. time of event: I / 2 (' Y3 / 4 2c1 (AM) h' End date, time of evenc 3 / lf'l 'M /'6 2e> (AM) hl Date. time oral notificanos made to DEC? Y '28/ /sI /4 M~f (AM)h DEC Omcial contacted:

fe'd 8efhIt /A l I

i Immediate corrective actions: Sc'e* 8'MMI6[

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1 Prevexuvs tions term) correctrve actions: fve //Metedd[

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i SECTION 3 1

Comelete this secton if event was a bvoass-1 Bypass amounc Was pnor DEC ausbonzadon received for this evers? (Yes)(No)

Date of DEC approval: / /

DEC Omcial consaceed:..

Describe event in " Description of soneespunees med enese" area is W 2.. Detail the start and med dates and tience-is Seedes 2 aise .

SECTTON 4 Facility Representsteve: A>M % M M w ,j w c'

Title:

//cAa bv be. >aA,/ M Date: # / J 7/ 9f 2

Phone #: f ?/f i 3 9 Als Faz #: f /I )

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, tenA.im mm)

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ReDort of Noncomo11ance Event (Cont 1 Section 2 l Descriotion of Nonconn11ance and Cause:

Condenser cleaning activities were performed from February 23,1995 at 1000

hours to March 4, 1995 at 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br /> during the Nine Mlle Point Nuclear

' Station Unit One (NMP-1) refuel outage. During the cleaning activities the

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condenser was dewatered and normal circulating water flow was isolated in

support of forebay cleaning for zebra mussels. The condenser tubes were cleaned using a pressurized water lance. Since the circulating water flow i* was isolated , (due to divers in the forebay for zebra mussel cleaning activities), the water and sludge was collected in the waterbox of the outlet side of the condenser in a temporarily bermed area. This water was continually pumped from this location to storage tanks outside of the 1 building and on Marchw6,1995 ill bethe sentsludge was also pumped to the storage to facilities which are permitted to i tanks. These materials \

handle these types of materials. A sample was taken on March 25, 1995 at l l

1820 hours0.0211 days <br />0.506 hours <br />0.00301 weeks <br />6.9251e-4 months <br /> following the start up of one of the circulating water pumps I (March 25, 1995 at 1815 hours0.021 days <br />0.504 hours <br />0.003 weeks <br />6.906075e-4 months <br />). The sample was analyzed by a vendor- 1

, laboratory and the results were telephoned to our Environmental Protection l Department on March 27, 1995 at'1730 hours0.02 days <br />0.481 hours <br />0.00286 weeks <br />6.58265e-4 months <br />.

The result for copper' was 0.468 mg/l. The permit Dally Max. Discharge Limitation for Outfall 010

copper is 0.25 mg/1.

I Residual copper from the tube cleaning activities is the cause of the l

exceedence. Condenser tube cleaning activities had been completed three l weeks prior to the restart of the circulating water pumps on l March 25, 1995. Therefore, the initial high results were due to a flushing -

l action of the condenser.

l l Immediate Corrective Action:

e l Following the initiation of the circulating-water flow on March 25, 1995, j the suspended solids were also measured at the discharcje for the subject i outfall in support of the zebra mussel cleaning activ1 ties. The solids level subsided within approximately one hour. Therefore, it is believed based on the behavior of the solids in the discharge following the initiation of the circulation water flow, that the conditions causing the l copper level exceedence did not continue and recurrence was not expected.

Additionally, the circulating water pumps were again isolated on March 26,  :

l 1995 at 0710 hours0.00822 days <br />0.197 hours <br />0.00117 weeks <br />2.70155e-4 months <br /> to support other plant tests associated with the restart I

of NMP-1.

Other sample results taken while condenser tube cleaning was in progress

and af ter the circulating water pumps were turned off (on February 28, 1995 and March 28, 1995, respectively) were both <0.020 mg/L for copper. Also i additional samples were collected on March 30, 1995 1mmediately following

, the restart of the circulating water pumps and up to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> post pump c

start. The initial sample result was 0.028 mg/l and all other sample i' results were <0.020 mg/1. These results are all well below the outfall .

permit limitation of 0.25 mg/l and supports the conclusion that the initial \

high copper level results on March 25, 1995 represented a one time flushing

. action of the condenser. Therefore, any impact to the environment is considered to be negligible.

l Preventative (lona term) Corrective Action:

l Future condenser tube cleaning operations which may be impacted by other i parallel operations (ie., zebra mussel forebay cleaning) will be l

coordinated /p1anned- such that residual copper considerations wil1 be addressed.

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J DISCHARGE MONITORING REPORT

. PERMIT NUMBER NY-000-1015 I NINE MILE POINT NUCLEAR STATION '

APRIL 1995 i COMMENTS 1

UNIT 1 l 1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 1 Outfall 010 for Betz Clam-Trol

, and Actibrom (TRO) as there were no Clam-Trol or TRO additions dtring April 1995. i i

2. For Outfall 030 (Sewage Treatment Plant), the 30 day geometric mean for fecal-coliform exceeded the

permit limit of.s.200mpn/100ml. Fecal-coliform results were discussed with NYS DEC Region 7-personnel on April 7,1995 and on April 25,1995. This exceedance is documented on the enclosed Report of Non-Compliance Event form (see Attachment 1). Also, copies of the individual laboratory j analysis report forms are enclosed (see Attachment 2) as requested by the Region 7 office during 1 phone conversations on the above mentioned dates.

Unit 2 1

l 1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 2 Outfall 040 for Betz Clam 'Jrol and Copper-Trol, as there were no Clam-Trol or Copper-Trol additions during April 1995. ~

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2. On April 8,1995, Unit 2 was shut down for a scheduled refueling outage. By April 18,1995, the Unit 2 Circulating Water System (Cooling Tower System) was dewatered for system maintenance while Unit 2 was shut down. Therefore, twice per week pH grab samples were not obtained from

. Outfall 040 once the system was dewatered. Data included under Outfall 040 was obtained from the l period of time when the Circulating Water System was operable, until it was dewatered on l April 18,1995.

i i 3. On April 7,1995, at approximately 1406 hours0.0163 days <br />0.391 hours <br />0.00232 weeks <br />5.34983e-4 months <br />, a drum containing spected oily water and solids r from a sump cleaning operation fell from a truck during transport i the Nine Mile Point Unit 2

(NMP-2) facility. The impact of the fall caused a spill of most of the drum contents to the blacktop.

A notification was made to the NYSDEC spill hotline on Sunday, April 9,1995 and was recorded as spill #95-00334.

l-Additional telephone notifications were made to NYSDEC Region 7 regarding this incident and

. detailed information was provided in written follow-up to the Region on April 21,1995 and on May 4,1995.

4. On April 28,1995, approximately 1500-2000 gallons of service water (lake water) overflowed to the

switch gear room / battery room floors located in the control building. Subsequently, due to energized switch gear equipment in the room, the water was allowed to flow out of a control building door to a storm drain (MH #315). The cleanliness of the floors in the flow path was very good, i.e., clean tile or painted floors with no materials stored in flow path.

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. DISCHARGE MONITORING REPORT

{' PERMIT NUMBER NY-0061015 i NINE MILE POINT NUCLEAR STATION i j APRIL 1995 l 4

COMMENTS  !

4. (cont.)

i l i The events that led up to this situation are as follows: )

e A service water line high point valve (s) on Unit cooler 108D in the control building on l Division II (Div II) service water had been acting as a vent valve for the drain-down of service water to radwaste inside of the reactor building.

i e When the drain-down to radwaste was isolated, the Div II service water line continued to fill due to an unrealized leak by of a cross-tie valve from the Division I service water.

j Eventually the Div II line overflowed into the switch gear / battery rooms in the control j building, which is outside of the radiologically controlled area. No activity (radioactivity) is associated with this event, i Some of the water was contained in the upper area of the unit cooler room and this water was drained to sump #4 in the control building. Sump #4 discharges to SPDES Outfall 007 and a sample was subsequently obtained and analyzed for total suspended solids, oil and grease and pH. The analysis results were all within the requirements of the SPDES Permit for Outfall 007, " Floor and Equipment ,

Drains", and are reflected in the Outfall 007 pre-printed DMR form for April 1995. The normal i drain point for this Outfall 007 location is to the perimeter drain system (Outfall 001) at or about MH

1. 315 (i.e., the same manhole location which the water from the floor areas had flowed to). This information was provided to NYSDEC Region 7 on May 3,1995 by telephone notification.

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. SECT 10N 1

,s i . New York State Devartment of Environmental Conservation .

Division of Water Report of Noncompliance Event M To: DEC Water Contact h Il@//am drM/,, DEC Region: 7 V

/ Escejerose i

V Pemut Welansee Order Violacon Anticipased Noncompliance Bypesaroverflow

, Report Type: 5 Day 4

j SECTION ?

SPDES N: NY. #/)# -/#/l Facility: /// nr /84  % T" /$' /c Ms IM 5 Date of noncompliance: 66/84 F I Locanon reatment Unit or Pump Staties): O_20 i Description of noncompliancets) and causets): icy NA da'

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If so, when? 4 MT Was event due to piset upset? (Yes) SPSES Ilmics violated (No)

Has event ceased? h(No) i Start date, time of evest: M'N/6'[ 0920 PM) End date, time of evenc #/24 / W. // 40 _ (AM) h Date, une oral notification made to DEC? N' 2 / YJI M M (AM)h DEC Official costseted: //r /f?///im Md b j Immod60te corrective actions: & #6 /[

l Prevectrve (long term) correcove actiosa: [t"6 ##6Ib[

l SECT 10N 3 Comolete this secuon if event was a bynana Bypeas amounc Was prior DEC aushensadan received foe this event? (Yes) (No)

Done of DEC approval: / /

DEC Omcini consaceed .

Deserte eveet la "E u of : ..- ;":een med esses" area in Secties 2.: Deena the start and and dates sad tienee is Seseles 2 sk a

SECTION 4

'""U lY Tide:/Ic/pId// lVule /3.-). Dem: 8 /Jf / TJ Feeliity Representative:

Pseee n: t 2/ S~ \ 3 9) . /<M C Faa n: t 3/5 1 Sf9 . /0 ;io i

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l SPDES #NY-000-1015

,- April 1995 DMR j Attachment I j Report of Non-Compliance Event Section 2 Descriotion of Noncomoliance and Canen

l Outfall 030 was sampled on April 4, April 10 and April 18,1995 and the results were

! > 160,000mpn/100ml,300mpn/100ml and 24,000mpn/100ml, respectively. Additionally, on April j 26,1995, Outfall 030 was sampled twice with one of the samples being split and the samples were analyzed by two independent laboratories. The split sample results were 7mpn/100ml for both j independent laboratory analyses and the second sample result, analyzed at one laboratory only, was

8mpn/100ml. One of the split sample results (i.e.,7mpn/100ml) and the 8mpn/100ml result were included along with the April 4, April 10 and April 18,1995 results for the computation of the j geometric mean (30 day). The geometric mean (30 day) of >578mpn/100ml is greater than the SPDES Permit limitation of.1200/100ml. The situation was discussed with the NYSDEC Region 7 Office on April 7 and April 25,1995.

l

The apparent cause of the exceedance of the NYSDEC SPDES Permit fecal coliform limit for Outfall 1

030 (Sewage Treatment Plant effluent) is due to the more restrictive limitation placed on chlorine for

Outfall 030 under the new SPDES Permit (EDP 12/1/94) thus reducing the ability to disinfect the -

l Outfall 030 effluent. The new Permit has reduced the amount of chlorine that is able to be injected by a factor of approximately between 6 to 9 versus the old Permit.

Immediate Corrective Actions:

I j A chemical use request has been submitted to the NYSDEC (letter from Anthony M. Salvagno to L Barry Borrow, dated April 4,1995) to request the use of a dechlorination agent and related modification to the Sewage Treatment Plant. The request has been received and reviewed by the l Department with a draft amended permit issued requiring a 30 day public comment period.

l The readiness for the installation of a dechlorination delivery system at the Sewage Treatment Plant l (STP) has been established and the operation and condition of the STP will be reviewed by an outside consul't ant for the purpose of providing recommendations.

Preventive (lone term) Corrective Actions:

implement final permanent modification for STP sodium sulfite dechlorination pending review and approval by DEC. ,

Environmental Imnact Considering the size of the receiving body of water (Lake Ontario) and the average water temperature of 40.7'F (during this time period), the survivability of the bacteria is questionable. Therefore, the environmental impact is negligible, i

i

SPDES #NY-000-1015 APril 1995 DMR l

i* Attachment 2

/

Environmental

' a S ERVIC ESNorth Syracuse.NY 13212

@ ~~L ABO R ATO RY 7280CaswolStreet,Hanmck Air Park .-

FAX (315) 458-0249 (800)842-4667 l (315)458-8033

' PROJECT #: 950581 NIAGARA MORANK POWER CORP. RECEIVED: 04/04/95 l P.O. SOE 63 LYCOMING NY 13093 ATTN: MR. TONY SALVAGl80 P.O. # 78168 ,

CLIENT JOB NUMBER: i t

DATE METHOD PERFORMED 4

PERFORMED NUMBER BY RESULTS UNITS TEST PERFORMED 98726 CLIENT SAMPLE ID: MMP SEW. EFF DATE SAMPLED: 04/04/95 i SAMPLE # I MPN INDEX/100mL 04/04/95 SM 16TH 906.C 11246 (NY) f FECAL COUFORM (MPN) > 160000 l l

CLIENT SAMPLE ID: NMP SEW. EFF DATE SAMPLED: 04/04/95 i SAMPLE #: 98727 04/06/95 EPA 405.1 11246 (NY) 7.2 MGA

S.O.D.

CLIENT SAMPLE ID: MMP SEW. EFF DATE SAMPLED: 04/04/95 SAMPLE #3 98728 MG/L 04/07/95 FPA 160.2 SM TOTAL SUSPENDED SOUDS 4.3 l

4 98729 CLIENT SANFLE ID: AER SONE 1 DATE SAMPLED: 04/04/95 i SAMPLE #

MG/L 04/07/95 EPA 160.2 SM TOTAL SUSPENDED SOUDS 4000 PERCENT 04/04/95 EPA 160.3 SM TOTAL SOUDS 0.4 4

l SAMPLE # 98730 CLIENT SAMPLE ID

AER SONE 2 DATE SAMPLED: 04/04/95 j

MG/L 04/07/95 EPA 160.2 SM TOTAL SUSPENDED ScuoS 3300 PERCENT 04/04/95 EPA 160.3 SM

+

TOTAL SOUDS 0.4 i-i

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l Your Full-Service Analytical Laboratory

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^l1995DMR Environmenta L ABO R ATORY S E RVIC ES l

l North Syracuse,NY 13212 7280 Caswed Street,Hancock Air Park ,

) (315)458-8033 FAX (315) 458-0249 (800)842-4667 NIAGARA MOKAWK POWER CORP. PROJECT #: '950581 P.O. BOX 63 RECEIVED: 04/04/95 LYCOMING NY 13093 ATTN HR. TONY SALVAGNO l

P.O. # 78168 CLIENT JOB NUMBER:

l DATE METHOD PERFORMED UNITS PERFORMED NUMBER BY TEST PERFORMED RESuLTS l

^

SAMPLE # CLIENT SAMPLE ID: AER EONE 2 DATE SAMPLED: 04/04/95

/

/,' [ 04/12/9s

.Toj/g'las W. Mendrala Date Latoratory Director All tests performed under NYS ELAP Laboratory Certification # 11375 unless Otherwise stated. _

y th'il' i

1 Page 2 1

Your Full-Service Analytical Laboratory Noddng Cersacesons at Connecacut, Dedewet Marydend, Massachusetts, New Hampshre, New M Panneyheren, and Rhode taland

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E n v i r o n m e n t alril1995DM W L A B O R ATO RY S ENorthRVIC 7280 Casweil Street, Hancock Air Park Syracuse.NY 13212 ES

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(315)458-8033 FAX (315) 458 0249 (800)842 4667 NIAGARA MOHAWK POWER CORP. PROJECT # 950627 P.O. BOX 63 RECEIVED: 04/10/95 LYCOMING NY 13093 ATTN MR. TONY SALVAGNO P.O. # 78168 CLIENT JOB NUMBER:

DATE METHOD PERFORMEC TEST PERFORMED RESULTS UNITS PERFORMED NUMBER BY SAMPLE # 98912 CLIE3fT SAMPLE ID: 10EP SAMPLE #1 DATE SAMPLED: 04/10/95 FECAL COUFORM (MPN) > 1800 MPN INOEX/100mL 04/10/95 SM 16TH 908.C 11246 (NY)

SAMPLE # 98913 CLIENT SAMPLE ID: MMP SAMPLE #2 DATE SAMPLED: 04/10/95 FECAL COUFORM (MPN) > 1800 MPN INDEX/100mL 04/10/95 SM 16TH 908.C 11246 (NY)

~

SAMPLE # 98914 CLIENT SAMPLE ID: NMP SAMPLE #3 DATE SAMPL?ns 04/10/95 i

FECAL COUFORM (MPN) 300 MPN INDEX/100mL 04/10/95 SM 16TH 908.C 11246 (NY)

[. < 04/13/95 ougss W. Mendrata Date i

Laboratory Director All tests perforrned under NYS ELAP Laboratory Certification # 11375 unless otherwise stated.

d Page 1 [,8 i

i Your Full-Service Analytical Laboratory Howg Corancanons a Connecocut, Denwers W Meseechueerts, New Mempshes New M r .:,t _ arni Rhode Istand

- SPDES #NY-000-1015 a

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E n v i r o n m e n t aitil1995DMR L ABO R ATO RY S ERVICES i ( North Syracuse, NY 13212 7280 Caswed Street, Hanc0ck Air Park

' (800)842-4667 (315)458-8033 FAX (315) 458-0249 NIAGARA MOHAWK POWER CORP. PROJECT # 950704 P.O. SOE 63 RECEIVED: 04/18/95 i LYCOMING NY 13093 ATTN MR. TONY SALVAGNO

P.O. # 78168 j CLIENT JOB NUMBER

1 OATE METHOD PERFORME:

1 TEST PERFORMED RESULTS UNITS PERFORMED NUMBER BY SAMPLE #1 99151 CLIENT SAMPLE ID: NMP SEWAGE EFF DATE SAMPLED: 04/18/95

' SM 16TH 908.C 11246 (NY)

COUFORM, FECAL (MPN) 24000 MPN INDEX/100mL 04/18/95 SAMPLE # 99152 CLIENT SAMFLI ID: MMP SEWAGE EFF DATE SAMPLED: 04/18/95 8.0.0.. <2 MGA 04/18/95 EPA 405.1 11246 (NY) i *

! SAMPLE # 99153 CLIENT SANFLE ID MMP SEWAGE EFF DATE SAMFLED: 04/18/95 i

i SOUCS, TOTAL SUSPENDED 4.5 MGA 04/20/95 EPA 160.2 MM 3

l

SAMPLE #1 99154 CLIENT SAMPLE ID

AEIATION IONE 1 DATE SAMPLED: 04/18/95 SOUDS, TOTAL SUSPENDED 3360 MGA 04/20/95 EPA 160.2 MM SOUDS TOTAL 0.5 PERCENT 04/20/95 EPA 160.3 MM l ,

SAMPLE #: 99156 CLIENT SAMPLE ID: AEIATION IONE 2 DATE SAFFLED: 04/18/95 SOUCS, TOTAL SUSPENDED 2960 MGA 04/20/95 EPA 16C .2 MM 3

j SOUDS TOTAL 0.4 PERCENT 04/20/95 EPA 160.3 MM i

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SPDES #NY-000-1015  !

April 1995 DMR l

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^~"-" l E n vi r o n m e n t a l F' L AB O R ATO RY S- North E RVIC ES Syracuse, NY 13212 7280 Caswell Street, Hancock Air Park -

(315)458 8033 FAX (315) 458-0249 (800) 842-4667 i i

NIAGARA MOHAWK POWER CORP. PROJECT #: 950704 P.O. BOX 63 RECEIVED: 04/18/95 LYCOMING NY 13093 ATTN: MR. TONY sALVAGNO P.O. # 78168 '

CLIENT JOB NUMBER:

DATE METHOD PERFORMED TEST PERFORMED RESULTS UNITS PERFORMED NUMBER BY SAMPLE #: CLIENT SAMPLE ID: AERATION ZONE 2 DATE SAMPLED: 04/18/95

!. 04/26/95 Date o%las W. Mendrata

Laboratory Director All tests performed under NYS ELAP Laboratory Certification # 11375 unless otherwise-stated.

1 i

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ATTN: MR. TONY SALVAGNO P.O. # 78168 CLIENT JOB NUMBER:

DATE METHOD PERFORMEI TEST PERFORMED RESULTS UNITS PERFORMED NUMBER BY j

SAMPLE # 110036 CLIENT SAMPLE ID: NMP EFF #1 DATE SANFLED: 04/26/95 COUFORM. FECAL (MPN) 37 MPN INDEX/100mL 04/26/95 $M 16TH 908.C 11246 (NY)

SAMPLE #: 110037 CLIENT SAMPLE ID: MMF EFF #2 DATE SAMPLED: 04/26/95 COUFORM, FECAL (MPN) 1600 MPN INDEX/100mL 04/26/95 $M 16TH 908.C 11246 (NY)

SAMPLE # 110038 CLIENT SAMPLE ID: NMP EFF #3 DATE SANFLED: 04/26/95 COUFORM, FECAL (MPN) 7 MPN INDEX/100mL 04/26/95 $M 16TH 908.C 11246 (NY) i O ,

L Q os /01/9s Dougfas W. Mendrata Date Latforatory Director

All tests performed under NYS ELAP Laboratory Certification # 11375 unless otherwise stated.

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. SPDES #NY-000-1015 April 1995 DMR

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.g ytr SAMPLE ANALYSIS REPORT  ;

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L *'p \ % - o r LSL Project No, i

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Life Science Laboratories. Inc. warrants, to the best of its knowledge and belief, the accuracy of the analyttcal test results contained in this reoort, but mates no other warranty, expressed or impiled, especially no warranties of marchantability or fitness for a particular purpose. By Client's acceptance and/or use of this report, Citent agrees that L5L is hereoy released from any and all liabilities, clates, damages or causes of action affecting or which may affect Citent as regards to the results contained in this reocrt. Client further agrees that the only renedy availacle to Client in the event of proven non-conformity with the above warranty shall be for LSL to re-perform the analytical test (s) at no charge to Client.

1 The data contained in this resort are for the exclusive use of the Client to whom it is addressed, and the release of these data to any other party, or the use of the name, tradmark or service mart of Life Science Laboratories. Inc. especially for the use of advertising to the general public, is strictly prohibited without j the exoross prior written consent of Life 5ctance Laboratories, Inc. i l

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l LIFE SCIENCE LABORATORIES,INC.

5854 Buttomut Onve. East Syracuse, New Yort 13057 Telennone:(315) 4451105 Fax:(315) 4451301

, ,/ -

SPDES #NY 000-1015

/ Life Scicnco Labarotorica, Inc AEril : D

.' 5854 Butternut Drive At e

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East Syracuse, New York 13057 (315) 445-1105 NYS DON ELAP No. 10248

• • SAMPLE ANALYSIS REPORT ** - -

05/01/95 i

Niagara Mohawk Power-Lycoming Contacts: Barb Zacharek P.O. Box 63 Lycoming, NY 13093 Phone: (315) 349-1248 Sample # 50410977 Project #: L3131 -02 Customer ID: Effluent #1 - 04/26/95 Matrix: NPW Authorization: Ck. 267419 Test Name Results Units Comment Completed Initials Fecal Coliform,MPN SM16th 908.C 13 MPN/100ml 04/26/96 GVK Sample # 50410978 Project #: L3131 -02 Customer ID: Effluent #2 - 04/26/95 .

Matrix: NPW Authorization: Ck. 267419 Test Name Results Units Comment Completed Initials Fecal Coliform,MPN SM16th 908.C 2 MPN/100ml 04/26/95 GVK Sample # 50410979 } & Bff fY Y

Project #: L3131 -02 Customer ID: Effluent #3 - 04/26/95 Matrix: NPW Authorization: Ck. 267419

, Test Name Results Units Comment Completed Initials Fecal Coliform,MPN SM16th 908.lC 7 MPN/100ml 04/26/95 GVK Sample # 50410980 Q Q' [Syd 5Wb j Project #: L3131 -02 '

Customer ID: Effluent #4 - 04/26/95 Matrix: NPW Authorization: Ck. 267419 l

Test Name Results Units Comment Completed Initials l

l Fecal Coliform,MPN SM16th 908. 8 MPN/100ml 04/26/95 GVK l

• h@ 'M

DISCHARGE MONITORING REPORT

[>' PERMIT NUMBER NY-000-1015 l NINE hmR POINT NUCLEAR STA'110N

MAY 1995 COMMENTS '

i UNIT 1

1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 1 Outfal1010 for Betz Clam-Trol and Actibrom (TRO) as there were no Clam-Trol or TRO additions during May 1995.

i

2. For the Sewage Treatment Plant Outfall 030, two samples taken on the same date resulted in fecal coliform values of > 1600 mpn/100mL. However, the 30 day geometric mean for the month was calculated to be 56 mpn/100mL. The sample dates and results are as follows:

I Data Ecad1 May 9,1995 8mpn/100mL.

]~

May 9,1995 <2mpn/100mL

, May 16,1995 > 1600mpn/100mL May 16,1995 p._1600mpn/100mL May 23,1995 14mpn/100mL UNIT .2 i

1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 2 Outfall 040 for Betz Clam-

, Trol, Slimicide (TRO) and Free Available Chlorine, as there were no Clam-Trol, TRO or Chlorine j additions during May 1995.

2. During most of May 1994, Unit 2 was shut down for a scheduled refueling outage and the Unit 2 l Circulating Water System (Cooling Tower System) was dewatered for system maintenance. During i the outage when the Circulating Water System was dewatered, twice per week pH grab samples were not obtained from outfall 040 due to the system being dewatered. Data included under outfall 040 was obtained from the period of time after the refill of the Cooling Tower Basin when the Circulating Water System was again operable.

camsme 2

DISCHARGE MONITORING REPORT PERMIT NUMBER NY-000-1015 i NINE MILE POINT NUCLEAR STATION

JUNE 1995 l

COMMENTS UNIT 1

1. On the attached SPDES/DMR forms, " NODI C' was noted for Unit 1 Outfall 010 for Betz Clam-Trol and Actibrom (TRO) as there were no Clam-Trol or TRO additions.during June 1995.

2. For Outfall 030 (Sewage Treatment Plant), the 30-day geometric mean for fecal-coliform exceeded the permit limit of.<;.200mpn/100ml. Fecal-coliform results were discussed with NYS DEC

Region 7 personnel on July 5,1995. This exceedance is documented on the enclosed Report of l

Non-Compliance Event form (see Attachment 1), which was submitted to the Region 7 office under )

1 separate letter dated, July 11, 1995. The use of chlorination and dechlorination for the control of

f-coli continues to be optimized and sample holding time has been minimized to the extent 4 practicable. Subsequent fecal-coliform sample analysis results for July 1995 have been below the

, permit limit. A System Engineer has been assigned to the Sewage Treatment Plant.(STP), and a 3

NYS Certified Chief Operator was assigned to the STP effective July 15, 1995. In addition, flow 4

equalization to the STP is being pursued under the direction of the Chief Operator and System '

j Engineer using plant design based equipment which is presently in place.

l 3. On June 16,1995, while investigating restricted seal water lines for the service water pumps in the l NMP-1 Screenhouse, System Engineering identified that the drain valves on the sand separators used i in the supply of service water (lake water) to the seal water lines were closed. In order for the

separators to function as designed, the drain valves needed to be opened. Subsequently, on that '

l same day, the drain valves were opened on two such systems which are located in the NMP-1 Screenhouse.

i The discharge of the sand separator drain lines is to the Condenser Cooling Water Unit #1 (SPDES .

Permit Outfall 010) Discharge. Flow through the open drain lines is estimated to be less than l approximately 25 gallons per minute by the System Engineer. During normal plant operation, the flow for Outfall 010 is approximately 280,000 gallons per minute. On June 23,1995, operations i

personnel and System Engineering identified that this configuration could possibly be outside the requirements of the SPDES Permit due to the potential discharge of solids. Solids is not a listed effluent parameter for Outfall 010. Furthermore, a discussion with several operators revealed that in some instances in the past, the valves were opened to flush the drains during operator rounds.

This concern was brought to the attention of the Environmental Protection Department on June 23, 1995, via an internal deviation event report process. The drain valves have been closed via a mark-

,' up (on June 23.,1995) until a resolution is determined. .

This situation was discussed with NYS DEC Region 7 personnel on June 28,1995 and a written follow-up letter was provided to the region on July 6,1995 (see attachment 2).

d 2

- -. _ --- . . . - - - . . ~ _ _ -- - - . . . . . .

9 0

DISCHARGE MONITORING REPORT

PERMIT NUMBER NY-000-1015 NINE MILE POINT NUCLEAR STATION 4 JUNE 1995 b

COMMENTS UNIT 2 i

1. On the attached SPDES/DMR forms, " NODI C" was noted for Unit 2 Outfall 040 for Betz Clam-

] Trol and Copper-Trol, as there were no Clam-Trol or Copper-Trol additions during June 1995.

j

2. The Unit 2 strip chart recorder used to measure Outfall 040 (Cooling Tower Blowdown and Service Water) discharge flow was inoperable for a short period in June 1995, due to testing / calibration.

1 Masimum water flow data for the period prior to or following the testing / calibration were used during this period.

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.  ? 4l.AO)J A DISCHARGE MONITORING REPORT

<u.h.<HAMX PERMIT NL%fBER NY.0041015

- - - - - NINE MILE POINT NUCLEAR STATION NINE RE POWT NUCMM SUDON,P o 3fd M pCOp 'm - JUNE 1995 ATTACHMENT 1 July 11,1995 William F. McCarthy, P.E.

Environmental Engineer II 4 NYS Dept. of Environmental Conservation

(. 615 Eric Boulevard West j Syracuse, New York 13204-2400

SUBJECT:

. Nine Mile Point Nuclear Station SPDES Permit Number NY 000-1015 Outfall 030 Fecal Coliform Exceedance

Dear Mr. McCarthy:

~

This letter is submitted along with the enclosed Report of Nonco'mpliance Event regarding the fecal-coliform exceedance that we discussed during our telephone conversation of July 5, 1995. As we discussed, the submittal of this Report of Noncompliance Event form satisfies the five (5) day written notification as contained in the SPDES Permit General Conditions.

This report will also be included with the June 1995 Discharge Monitoring Repon (DMR) along with any additionalinformation that may then be available concerning the Preventive (long-term) Corrective Action.

Should you have any questions concerning this matter, please contact me at (315) 349-1456.

ff Y =?W

. Anthony M. Salvagno Acting Supervisor Environmental Protection

/dar pc: M.J. McCormick Jr.

T.W. Roman G.M. McPeck W.J. Holzhauer, Esq.

C.D. Howes G.A. Corell ~

DMR File AMS95 045 w -

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,' New York State Deecrrment of Envrronmental Cortservation Divmon af Water ~

M::.

Report of Noncompliance Event W

To

DEC Water Contact Mr. Wi11iam McCarthv DEC Region: 7 Exceedance Bypasa,0venlow Report Type _, , 5 Day X P : tut Xionneux Order Violanon _ ucciossad Noncomahance t SECON : 1 1

I SPDES s: ,NY. 000-1015 Fse:lity: Nina Milo pn4a* N. t esr e.s+4rr i i

Data of noncomoiience: 6  ?? 95 Locanon hTreatment l' art. or Pump Statsoas: 030 Descripoon of noncompusacessi and causeisi: W ATTAf'HFD l a  ;

l i

I Has event ceaseo? @fNot if so, whee? A/00/cc Was evens due to plant upset? (Yes) h SPDES timits violased? @ (Nc Start data, ume of event: 6 97 QC 6 ' 79 05 00 90- @ (P.W 08 CO @ (PM) End data. time of evenn i

Date, uma oral nonficanon made to DEc? 7 5 95. 2 30 (AM) @ DEC Omcial concersed

Mr. Wr . McCarthy

Immediate corrective act

ens:

Tao kn1H +4-o l The me of chlnr4n3+ inn =ad dochlorinatinn will ennt'ano en he nne'mi'ad

.,411 ka min 4-4,aA +- *he ev+ar. - r s r + 4 r sh),o 4,

ser 2ns_iu+4rsi e s - m i n e_

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Pr:venave tions termi correcove actsens:

Flow ecualization for the olant will be tested and evaiuateo for imolementation followinc

{

the accu 1sition of base line data on the use of the cechlorination system.

I SECTION 3 8

Comoitte this seccoti if event was a bvearr Bypass announc Was prior DEC auinonzanon received for this event? (Yes) (No)

' /

l DEC Of5cial consacied Dess of DEC approvel:

Describe event in "D .J : of r ,* see andicasse" ares is Seenies-2.. Detet the start and and desse sad tissee is Sesses,2 aba.

SEC'nON 4 Facility Representacrve: -

1. Title./4-6 u SM 8t'oS Date: Y / // /

• r l l Phone W: ( I/I i JF f . /4'U Faz s: ( 1/ I i WF . /0 M i 1 i

! 14t%.400 1174 %

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Renort of Noncomollance Event I- ' SECTION 2 i Description of noncompliance (s) and cause(s)

The 30 day geometric mean of 6 fecal

coliform samples for the month of June 1995 was 240MPN/100ml. The Permit limit i expressed as a 30 day geometric mean is .s.200MPN/100ml. The cause is attributable to the stricter limit placed on chlorine for the Outfall in the newly issued Permit (12/1/94) and the i

lack of time for optimization of the dechlorination system following permit modification effective 6/19/95. Additionally, one of the samples taken after dechlorination had been i initiated was performed by the contractor laboratory according to the required analytical i

methodology, but the holding time encroached on the limit specified in the method and the possibility of fecal coliform regrowth in the sample is suspected.

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DISCHARGE MONITORING REPORT ,

PERMIT NUMBER NY-000-1015 i

' NINE MILE POINT NUCLEAR STATION '

N ' "'***"^ 3""= '

ATTACHMENT 2 1

NINE MILE POINT NUCLEAA STAT 10 nip O BOX 63. LYCOMING. NEW YCAK 13093/ TELEPHONE (315) 343 2110 I i

AMS95.042 July 6,1995 l

William F. McCarthy, P.E.

i Environmental Engineer II NYS Dept. of Environmental Conservation 615 Eric Boulevard West l Syracuse, New York 13204-2400 l

Subject:

Nine Mile Point Nuclear Station i SPDES Permit Number NY 000-1015  ;

l Sand Separators ,

Dear Mr. McCarthy:

. This letter is submitted per your request following our telephone conversation of June 28, 1995, regarding the use of the subject sand separators at Nine Mile Point Unit One (NMP-1).

This letter will be referenced in the June 1995 DMR.

4 On June 16, 1995, while investigating restricted seal water lines for the service water pumps in the NMP-1 Screenhouse, System Engineering identified that the drain valves on the sand

separators used in the supply of service water (lake water) to the seal water lines were closed. In order for the separators to function as designed, the drain valves needed to be opened. Subsequently, on that same day, the drain valves were opened on two such systems j which are located in the NMP-1 Screenhouse.

4

The discharge of the sand separator drain lines is to the Condenser Cooling Water Unit #1 (SPDES Permit Outfall 010) Discharge. Flow through the open drain lines is estimated to be less than approximately 25 gallons per minute by the System Engineer. During normal plant i operation, the tiow for Outfall 010 is approximately 280,000 gallons per minute. On June

23,1995, operations personnel and System Engineering identified that this configuration

! could possibly be outsioe the requirements of the SPDES Permit due to the potential discharge of solids. Solids is not a listed effluent parameter for Outfall 010. Furthermore, a l discussion with several operators revealed that in some instances in the past, the valves were

opened to flush the drains during operator rounds. _ This concern was brought to the attention of the Environmental Protection Department on June 23,1995, via an internal deviation event report process. 'Ihe drain valves have been closed via a mark-up (on June 23,1995) until a resolution is determined.

AMS95.042 7/6/95, Pg. 2 A partial copy of Piping and Instrument Drawing (No. C-18022-C)' showing the sand separators and a " Detail" sketch of a separator from another plant drawing are included as Attachments 1 and 2. Niagara Mohawk Power Corporation plans on applying for a

. modification to it's SPDES Permit to address this issue as well as the issue of circulating and service water fottbay cleaning around October 1995.

Should you have any questions concerning this matter, please contact me at (315) 349-1456.

Sincerely, A,# J, R $ ! _ ,:- Y Anthony M. Salvagno Acting Supervisor -

Environmental Protection

/dar 1

pc: M.J. McCormick Jr.

T.W. Roman G.M. McPeck

, W.J. Holzhauer, Esq.

/C.D. Howes

! DMR File l

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