ML062910400
| ML062910400 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 09/30/2006 |
| From: | Dewald L Entergy Operations |
| To: | Emch R NRC/NRR/ADRO/DLR |
| References | |
| %dam200611, TAC MD2297 | |
| Download: ML062910400 (147) | |
Text
Richard Emch - VY 2005 DMR's Page 1 From:
"DeWald, Lynn" <Idewald@entergy.com>
To:
<rle@nrc.gov>, <tlpatton@anl.gov>
Date:
09/30/2006 9:54:25 AM
Subject:
VY 2005 DMR's Attached are the 2005 DMR's for VY. Lynn Lynn DeWald Entergy Nuclear Vermont Yankee, LLC 320 Governor Hunt Road Vernon, VT 05354 802-258-5526 (phone) 802-258-5865 (fax) 802-380-4493 (cell)
cAtemp\\GW)00001.TMP Page 1 1 c:\\temp\\GWIOOOO1.TMP Page 1 I Mail Envelope Properties (451E76F4.CEC : 5 56556)
Subject:
Creation Date From:
Created By:
VY 2005 DMR's 09/30/2006 9:52:20 AM "DeWald, Lynn" <Idewald@entergy.com>
ldewald@entergy.com Recipients nrc.gov OWGWPOO2.HQGWDOO1 RLE (Richard Emch) anl.gov tlpatton Post Office OWGWPOO2.HQGWDOO1 Route nrc.gov anl.gov Files Size MESSAGE 207 TEXT.htm 3584 NPDES State Reports September 2005 DMR.pdf NPDES State Reports April 2005 DMR.pdf NPDES State Reports August 2005 DMR.pdf NPDES State Reports December 2005 DMR.pdf NPDES State Reports Feb 2005 DMR.pdf NPDES State Reports Jan 2005 DMR.pdf NPDES State Reports July 2005 DMR.pdf NPDES State Reports June 2005 DMR.pdf NPDES State Reports March 2005 DMR.pdf NPDES State Reports May 2005 DMR.pdf NPDES State Reports November 2005 DMR.pdf NPDES State Reports October 2005 DMR.pdf Mime.822 8477373 Date & Time 09/30/2006 9:52:20 AM 309873 197537 374368 508535 204987 168233 338918 216804 201588 205076 3137961 323652 Options Expiration Date:
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ReplyRequested:
Return Notification:
Concealed
Subject:
None Standard No None No
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-Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Govern6r Hunt Rd.
Vernon. VI" 05354 TeO 802-257-7711 II February 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street - Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for January 2005
Dear Ms. Tanner,
As required in Section D.2. of the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for January 2005.
The simulated temperature increase to the Connecticut River for January 2005 is shown in Figure 1. The simulation is based on electronically acquired five-minute river discharge data from the Vernon Darn, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 4.02' F on 14 January 2005 when the permitted limit was 134A *F. This occurred at a river flow of 6,157 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of January ranged from 5,060 cfs to 33,465 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for January 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 33.20 'F to 34.03 -F during January 2005. The downstream measured River Station 3 temperatures ranged from 32.90 'F to 35.36 0F during January 2005. The permitted daily discharge volume from the Station ranged from approximately 292 million gallons per day (MGD) on January 16 to 351 MGD on January 7 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
g There were no circulating water or service water chlorination treatments during January 2005; therefore, no pH measurements were taken (Table 2). The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Partt, A. 1) (Table 3).
As always, there were no discharges of radioactive liquids during January 2005 (Table 4).
X\\\\ysharedPrqects¶hem State FiesWPIDSWqPES 2005Wonthly reports an certificaton kd ANPMS d age and UtmeW monx l repo*t cover lette Jan 2005.doc
9 Page2 The Station's heating boilers were blown down daily in January 2005, the discharge flow rate each day was approximately 18 gallons and the hydroquinone concentration ranged from 1.025 to 2.000 ppm per discharge and the NPDES limit is 15.0 ppm (Table 5).
The traveling screens and strainers are secured for the winter and were not backwashed during January (Table 6).
The water treatment carbon filters were backwashed twice during January 2005, the discharge limit was never approached (Table 7).
The monthly inspection of the chemical containment berm was conducted on 30 January 2005 under work order 2005-4924. No deficiencies were identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, EntergW Nuclear Vermont Yahke, LWC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent
- \\\\yshadlWPrqjects\\eChm Stab FkMPDEMNDES 20Oivnonlyt reports and ertification leftU NANPDES 6=dharge and tewml ronffm y report cover Jan 2005.do0
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for Jan 2005 14 12 10 0,
C)
- 0 CL E) 9 8
6 4
2 0
0 5
10 15 20 Day of Month i
Permitted Limit DeltaT -0C019 from ERFIS I 25 30
-r.
.V
- 1.
Figure 2. River Water Temperature at Monitor Sites for Jan 2005 40-35-30-25" 2
S205 U)
E 10 5-0~
0 5
10 15 20 Day of Month I -1 BOPM036 Monitor7 (upstrm) -
BOPM037 Monitor3 (dwnstrm) I 25 30 I
5.
C..*.4.:.**.........
I
.VflW~fl.
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling WaterlService Water Table 1. Volume of Water Discharged to River January, 2005 (a)
Discharge Flow Rate (millions of qal/dav)
Day 1
314.78 2
314.81 3
323.36 4
314.79 5
322.61 6
312.92 7
350.98 8
312.89 9
313.39 10 313.36 11 313.48 12 314.92 13 304.42 14 304.92 15 317.36 16 291.95 17 306.90, 18 306.94 19 306.92 20 306.00 21 314.84 22 313.55 23 313.57 24 322.08 25 322.12 26 322.12 27 313.60 28 300.55 29 297.65 30 297.32 31 313.83 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems January, 2005 There were no circulating or service water treatments In January 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement January, 2005 (a)
(b)
(c}
Day pH..
pH pH*
1 7.30 7.30 2
7.20 7.30 3
7.40 7.20 4
7.30 7.40 5
7.30 7.30 6
7.30 7.40 7
7.50 7.40 8
7.30 7.30 9
7.30 7.30 10 7.30 7.30 11 7.40 7.40 12 7.40 7.50 13 7.20 7.30 14 7.10 7.20 15 7.30 7.20 16 7.10 7.20 17 7.20 7.30 18 7.30 7.40 19 7.30 7.40 20 7.40 7.20 21 7.40 7.30 22 7.30 7.40 23 7.30 7.30 24 7.30 7.30 25 7.30 7.20 26 7.20 7.20 27 7.20 7.20 28 7.20 7.10 29 7.20 7.20 30 7.30 7.20 31 7.20 7.20 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - rcl water stream (c) Sample taken from TBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Uquids Table 4. Volume of Radioactive Liquid Discharged January, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration January, 2005 Day Discharge Flow Rate (qaVdav)
Hvdrocuinone (DDm) 1 18.0 1.500 2
18.0 1.700 3
18.0 1.400 4
18.0 1.475 5
18.0 1.675 6
18.0 1.130 7
18.0 1.350 8
18.0 1.250 9
18.0 1.025 10 18.0 1.025 11 18.0 1.250 12 18.0 1.100 13 18.0 1.600 14 18.0 1.675 15 18.0 1.400 15 18.0 1.500 17 18.0 1.080 18 18.0 1.700 19 18.0 2.000 20 18.0 1.725 21 18.0 1.450 22 18.0 1.725 23 18.0 1.225 24 18.0 1.450 25 18.0 1.250 26 18.0 1.280 27 18.0 1.220 28 18.0 1.380 29 18.0 1.450 30 18.0 1.250 31 18.0 1.200
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VTO"00264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash January, 2005 There were no backwashes in January
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: January 2005 Backwash Backwash Backwash Total gallons flow rate discharged (gpm)
(MGD)
Date Pump Start Pump Secured Time Time 01/06/2005 1244 1256 125 0.002 01/23/2005 821 831 150 0.002
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
~Enteroy PO. Box 157 Vernon, VT 05354 Tel 802-257-7711 7 March 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT.0000264, VT DEC Permit No. 3-1199 Subject-Monthly NPDES Discharge Monitoring Report for February 2005
Dear Ms. Tanner,
As required in Section D.2. of the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for February 2005.
The simulated temperature increase to the Connecticut River for February 2005 is shown in Figure 1. The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 12.91" F on 10 February 2005 when the permitted limit was 13.4 IF. This occurred at a near minimum river flow of 1,285 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of February ranged from 1,285cfs to 13,405 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for February 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 33.14 TF to 33.70 *F during February 2005. The downstream measured River Station 3 temperatures ranged from 33.58 'F to 37.10 IF during February 2005. The permitted daily discharge volume from the Station ranged from approximately 300 million gallons per day (MGD) on February 24 to 323 MGD on February 28 (Fable 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no circulating water or service water chlorination treatments during February 2005; therefore, no pH measurements were taken (Table 2). The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part I, A. 1) (Fable 3).
As always, there were no discharges of radioactive liquids during February 2005 (Table 4).
\\Wyshared1TPjecftrhern State FkesWlPDESWDES 2005moVnrty reports and cerification letteFEBINPDES discharge and thermal monftly report cover letter Feb 2005.doc
- Page2 The Station's heating boilers were blown down daily in February 2005, the discharge flo*' rate each day was approximately 18 gallons and the hydroquinone concentration ranged from 0.975 to 1.680 ppm per discharge and the NPDES limit is 15.0 ppm (Table 5).
The traveling screens and strainers are secured for the winter and were not backwashed during February (Table 6).
The water treatment carbon filters were backwashed twice during February 2005, in both instances the discharge volume was 0.001 million gallons for the day (Table 7).
The monthly inspection of the chemical containment berm was conducted on 11 February 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent V\\Vysaremd1~PrrectsVUhM State FilesNNPDESWNPDES 2OO5Vnontty reports and certfficatOm WeWtAEBNPDES dscharge and
- mW nwfmotly report cover letter Feb 2005.dcc
w-mmEntergy Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/ VTO000264 PERMITTEE:
Entergv Nuclear Vermont Yankee: LLC Entergv Nuclear Ven ont Yan ee'. LLC MONTH/YEAR OF REPORT: February 2005 REPORT PREPARED BY: Lynn DeWald I certify, under penalty of law, that I have personally examined and am familiar with the information submitted herein. 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 submitted false information, including the possibility of fine and imprisonment.
APPROVED BY:
Au *zed Ag-e-foth emte DATE :5171o0-
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. V`1`0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River February, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day
(
1 314.30 2
314.32 3
314.31 4
314.32.
5 314.33 6
314.36 7
314.40 8
314.39 9
301.28 10 314.36 11 314,38 12 314.48 13 315.42 14 314.49 15 314.21 16 314.21 17 314.25 18 314.27 19 314.26 20 314.02 21 314.02 22 322.50 23 322.48 24 300.90 25 314.75 26 314.80 27 314.74 28 323.34 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems February, 2005 There were no treatments during February 2005 (b)
Circulatinq Water (b)
Service Water (a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant.
Oxidant During Day (min)
(mg/)
(mg/I)
Treatment (mg/i).
(rg/)
Treatment 2
3
.4 5
6 12 12 3" 13 14 15 16 17 18
'1 19 20 2 1 12
° 23 24 2 5 26 27 28
-(a) Time from the Introduction of oxidant into circulating or service water system until oxidant Is no longer detected in the discharge (b) Sample taken from discharge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. Vro000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH February, 2005 Measurement (a)
(b)
(c)
Day pH pH pH 1
7.10 7.20 2
7.10 7.10 3
7.10 7.20 4
7.30 7.20 5
7.20 7.10 6
7.30 7.20 7
7.10 7.10 8
7.20 7.20 9
7.10 7.20 10 7.10 7.20 11....
7._30 7.30 12 7.30 7.30 13 7.20 7.30 14 7.10 7.10 15 7.20 7.20 16 7.20 7.20 17 7.20 7.20 18 7.20 7.20 19 7.20 7.20 20i 7.20 7.10 21 7.10 7.20 22 7.10 7.20 23 7.30 7.30 24 7.40 7.30 25 7.20 7.20 26 7.30 7.30 27 7.10 7.20 28 7.10 7.20 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - dre water stream (c) Sample taken from TBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged February, 2005 There were no radioactive liquid discharges in February, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration February, 2005 Day Discharae Flow Rate (ual/dav)
Hvdroauinone (oom) 1 18.0 1.150 2
18.0 1.425 3
18.0 1.300 4
18.0 1.500 5
18.0 1.200 6
18.0 1.250 7
18.0 1.375 8
18.0 1.550 9
18.0 1.200 10 18.0 1.150 11 18.0 1.350 12 18.0 1.200 13 18.0 0.975 14 18.0 1.320 15 18.0 1.575 16 18.0 1.375 17 18.0 1.100 18 18.0 1.300 19 18.0 1.150 20 18.0 1.000 21 30.0 1.500 22 18.0 1.200 23 18.0 1.000 24 18.0 1.430 25 18.0 1.650 26 18.0 1.680 27 18.0 1.200 28 18.0 1.320
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. V170000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash February, 2005 There were no strainer or traveling screen backwashes Discharge Flow Rate Qal/day)
(a)
(millions of Day 5
6 7
8 9
10 12 13 14__
15 16 17' 18 19__
20 21 22 23 24 25 26 27 28__
(a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7..Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: February 2005 Backwash Backwash Backwash Total gallofis flow rate discharged (gpm)
(MGD)
Date Pump Start Pump Secured Time Time 02/09/2005 210 216 150 0.001 02/27/2005 2235 2245 140 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for Feb 2005 14 12 10 C)
I..
E U) 8 6
4 I I I I I I I I I I I
.t 4
2 0
0
.5 10 15 Day of Month 20 25 I, xPermitted Limit DeltaT -
C019 from ERFIS I
Figure 2. River Water Temperature at Monitor Sites for Feb 2005 40 39 38 37 m 36
- 35 E 34 33 32 31 30 0
..5 10 15 20 Day of Month 1 BOPM036 Monitor7 (upstrm) -
BOPM037 Monitor3 (dwnstrm) 25
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 13 April 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for March 2005
Dear Ms. Tanner,
As required in Section D.2. of the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for March 2005.
The simulated temperature increase to the Connecticut River for March 2005 is shown in Figure 1. The simulation is based on electronically acquired five-minute river discharge data from the Vernon Darn, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 12.80" F on 7 March 2005 when the permitted limit was 13.4 AF. This occurred at a river flow of 1,315 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of March ranged from 1,315 cfs to 38,095 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for March 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 32.98 *F to 35.64 'F during March 2005. The downstream measured River Station 3 temperatures ranged from 33.97 OF to 38.58 OF during March 2005. The permitted daily discharge volume from the Station ranged from approximately 272 million gallons per day (MGD) on March 29 to 324 MGD on March 20 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no circulating water or service water chlorination treatments during March 2005; therefore, no pH measurements were taken (Table 2). The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part 1, A. 1) and are reported in Table 3.
There were no discharges of radioactive liquids during March 2005 (Table 4).
\\\\Vyshared1lProqectsChem State FilesWNPDESWNPDES 20051moftly reports and certification letterARNPDES discarge and_
thermal monthly report cover letter Mar.2005.doc
- Entergy 0 Page2 The Station's heating boilers were blown down daily in March 2005, the discharge flow rate each day was approximately 18 gallons and the hydroquinone concentration ranged from 0.600 to 1.625 ppm per discharge and the NPDES limit is 15.0 ppm (Table 5).
The traveling screens and strainers were backwashed daily during March 2005, the backwash volume ranged from 0.017 to 0.040 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed once during March 2005, the discharge volume was 0.001 million gallons for the day (Table 7).
The monthly inspection of the chemical containment berm was conducted on March 21, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, EntergyNuclecr Vemont Yankee, LLC LynnoDeWald Environmental Specialist Samuel A. Wender IV Chemistry Superintendent *
\\VysharedlrectsXChem State FilesWNPDESVNPDES 2005krnonth@ reports and certffication IetterMAAR\\NPDES discharge and thermal monthly report cover letter Mar 2005.doc
Entergy Nuclear Northeast. Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River March, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
314.78 2
314.77 3
314.77 4
314.77 5
314.55 6
313.18 7
314.32 8
313.77 9
313.84 10 313.88 11 313.86 12 313.77 13 313.40 14 313.91 15 314.29 16 314.34 17 314.39 18 314.40 19 314.60 20 324.35 21 315.76 22 315.76 23 315.75 24 315.74 25 315.73 26 324.33 27 320.26 28 323.02 29 272.33 30 323.02 31 323.02 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems March, 2005 (b)
Circulating Water (b)
Service Water (a)pH pH Treatment Free Total Measured Free Total
'Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg/1)
(mgf)
Treatment (mg/i)
(m LA Treatment 2
23______
34_____
45_________
56_____
67__________
11 12 13__
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 (a) Time from the introduction of oxidant into circulating or service water system until oxidant Is no longer detected in the discharge (b) Sample taken from discharge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement March, 2005 (a)
(b)
(c)
Day pH pH pH 1
7.30 7.40 2
7.20 7.20 3 '
7.30 7.20 4
7.30 7.20 5
7.20 7.20 6
7.20 7.20 7
7.20 7.20 8
7.20 7.20 9
7.30 7.20 10 7.20 7.20 11 7.20 7.20 12 7.20 7.20 13 7.20 7.20 14 7.10 7.10 15 7.20 7.20 16 7.20 7.20 17 7.10 7.10 18 7.20 7.20 19 7.10 7.20 20 7.10 7.10 21 7.10 7.20 22
"' 7.30 7.20 23 -
' 7.30 7.20 24 7.30 7.20 25 7.30 7.30 26 7.30 7.20 27 7.30 7.30 28 7.40 7.30 29 7.20 7.20 30 7.20 7.20 31 1
7.20 7.20 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - circ water stream (c) Sample taken from TBCOW sample sink-service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged March, 2005 There were no radioactive liquid discharges in March, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration March, 2005 Day Discharqe Flow Rate (qaVday)
Hvdrociuinofle (D~m) 118.0 1.125 2,.
18.0 1.150 3
18.0 1.100 4
18.0 1.025 518.0 1.075 6
18.0 0.900 7
18.0 1.530 8
18.0 1.250 9
18.0 1.150 10 18.0 1.625 11 0.0 1.400 12 18.0 1.300 13 18.0 1.225 14 18.0 1.300 15 18.0 1.050 16 18.0 1.330 17 18.0 1.500 18 18.0 1.500 19 18.0 1.500 20 18.0 1.500 21 18.0 1.500 22 18.0 1.500 23 18.0 1.500 24 18.0 1.125 25 18.0 1-.200 26 18.0 1.600 27 18.0 0.950 28 18.0 0.750 29 18.0 1.075 30 18.0 0.600 31 18.0 0.625
Entergy Nuclear Northeast. Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash March, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
0.017 2
0.017 3
0.017 4
0.017 5
0.017 6
0.017 7
0.017 8
0.017 9
0.017
________10 0.017 11 0.017 12 0.017 13 0.017 14 0.017 15 0.017 16 0.017 17 0.017 18 0.017 19 0.017 20 0.017 21 0.017 22 0.017 23 0.017 24 0.017 25 0.017 26 0.017 27 0.017 28 0.026 29 0.035 30 0.044 31 0.035 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: March 2005 Backwash Backwash Backwash flow Total rate (gpm) gallons discharg ed Date Pump Start Pump (MGD)
Secured Time Time 03/22/2005 2301 2314 150 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for March 2005 14 12 1
10 L-9 0
C.
I.
4 6
4
-L
-u 2
0 0
5 10 15 Day of Month 20 1 25 30 I - Permitted Limit DeltaT -
C019 from ERFIS I
Figure 2. River Water Temperature at Monitor Sites for Mar 2005 40 39 38 37 IL.m36 35 E 34 33 32 31 1
I
,I" 30 0
5 10 15 20 25 30 Day of Month BOPM036 Monitor7 (upstrm) -
BOPM037 Monitor3 (dwnstrm) t B l *Ie
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 12 May 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for April 2005
Dear Ms. Tanner,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for April 2005.
The simulated temperature increase to the Connecticut River for April 2005 is shown in Figure 1. The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the.upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 1.23" F on 17 April 2005 when the permitted limit was 13A *F. This occurred at a river flow of 14,000 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of April ranged from 14,005 cfs to 70,178 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for April 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 35.32 'F to 48.78 'F during April2005.
The downstream measured River Station 3 temperatures ranged from 35.14 TF to 50.93 *F during April 2005. The permitted daily discharge volume from the Station ranged from approximately 309 million gallons per day (MGD) on April 4 to 489 MGD on April 30 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no circulating water or service water chlorination treatments during April 2005; therefore, no pH measurements were taken (Table 2). The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part I, A. I) and are reported in Table 3.
There were no discharges of radioactive liquids during April 2005 (Table 4).
\\W\\ysharedll~rojects\\Chem State Files\\NPDES\\NPDES 2005\\monthly reports and certification letter6APRMIPDES discharge and thermal monthly report cover letter April 2005.doc
SEntergy 0 Page2 The Station's heating boilers were blown down 28 out of 30 days in April 2005, the discharge flow rate each day was approximately 18 gallons and the hydroquinone concentration ranged from 0.525 to 1.330 ppm per discharge and the NPDES limit is 15.0 ppm (Table 5).
The traveling screens and straineis were backwashed daily during April 2005, the backwash volume ranged from 0.026 to 0.044 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed twice during April 2005, the discharge volume was 0.007 million gallons per day on 7 April and 0.001 million gallons per day on 26 April 2005 (Table 7).
The monthly inspection of the chemical containment berm was conducted on April 15, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Environmental Specialist Samuel A. Wender IV Chemistry Superintendent
\\\\Vyshared1lProjectsXChem State FilesXNPDESXNPDES 2005Vnonthly reports and certifircation letter\\APR\\NPDES discharge and thermal monthly report cover letter April 2005.doc
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264.
Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River April, 2005 (a)
Discharge Flow Rate (millions of aaVdav).
Day 1
323.02 2 "_321.43 3
31 9.06 4
309.57 6
323.02 6
329.77 7
323.02 8
323.02 9
323.02 10 323.01 11 323.00 12 319.81 13 323.02 14 319.82 15 320.51 16 323.02 17 381.95 18 484.16 19 480.15 20 480.15 21 480.15 22 471.22
- 23.
480.15 24 480.15 25 367.65 26 447.42 27 434.17 28 434.32 29 480.15 30 488.92 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling WaterlService Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems April, 2005 There were no circulating or service water treatments in April 2005 (b)
(b)
(a) pH pH Treatment Free Total Measured Free Total.
Measured Duration Oxidant Oxidant During.
Oxidant Oxidant During Day (min)
(mg/I)
(mg/I)
Treatment (mg/I)
(mg/I)
Treatment 1
2 3
4 5
6 7
8 9
10 11 12 13 14 15 16 17 18 1920 21 22 23 24 25 26 27 28 29 30 (a) Time from the introduction of oxidant into circulating or service water system until oxidant is no longer detected in the discharge tb) Sample taken from discharge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement April, 2005
{a)
(bl (c)
_ Day pH pH pH 1
7.20 7.10 2
7.30 7.20 3
_7.10 7.10 4
7.20 7.10 5
7.10 7.10 6
7.10 7.10 7
7.20 7.20 8
7.10 7.10 9
7.30 7.20
- 10 7.20 7.20 11 7.20 7.20 12 7.20 7.10' 13 7.30 7.20 14 7.30 7.30 15 7.30 7.20 16 7.30 7.20 17 7.30 7.30 18 7.40 19 7.20 7.30 20 7.40 7.40 21 7.50 7.40 22 7.40 7.50 23 7.40 7.40 24 7.30 7.30 25 7.20 7.20 26 7.30 7.20 27 7.20 7.20 28 7.20 7.30 29 7.20 7.20 30 7.40 7.40 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - circ water stream (c) Sample taken from TrBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged April, 2005 There were no radioactive liquid discharges in April, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration April, 2005 Day Discharae Flow Rate (gal/dav)
Hvdroauinone (DDm)
I no boiler blowdown 0.000 2
18.0 0.525 3
18.0 1.100 4
18.0 1.100
.5 18.0 1.300 6
18.0 1.200 7
1B.0 1.300 8
18.0 1.175 9
18.0 1*325 10 18.0 1.050 18.0 1.300 12 18.0 1.200 13 18.0 1.250 14 18.0 1.175 15 18.0 1.150-16 18.0 1.125 17 18.0 1.200 18 18.0 1.200 19 18.0 1.180 20 no boiler blowdown 0.000 21 18.0 1.330 22 18.0 1.000 23 18.0 1.025 24 18.0 1.085 25 18.0 1.075 26 18.0 1.082 27 no blowdown 0.000 28 18.0 1.100 29 18.0 1.100 30 18.0 1.100
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264
- Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash April, 2005 (a)
Discharge Flow Rate (millions of oal/dav)
Day 1
0.044 9
0.044 3
0.044 4
0.044 5
0.044 6
0.044 7
0.044 8
0.044 16 0.044 10 0.044 11 0.044 12 0.044 23 0.035 14 0.035 15 0.035 16 0.026 17 0.026 18 0.026 19 0.026 20 0.035 21 0.035 22 "0.035
.23 0.035 24 0.044 25 0.044 26 0.044 27 0.044 28 0.044 29 0.044 30 0.035 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: April 2005 Backwash Backwash Backwash flow Total gallons rate (gpm) discharged (MGD)
Date Pump Start Pump Secured Time Time 04/07/2005 155 203 140 0.007 04/26/2005 2345 23551 140(
.0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for April 2005 14.
12 10 U.
"0 8-CL E
4 2-0--!i 0
5 10 15 20 25 30 Day of Month 7 - Permitted Limit DeltaT C019 from ERFIS I
Figure 2. River Water Temperature at Monitor Sites for April 2005 85 80 -
4-Upstream Station 7 thermistor calibration 75 70O-u.
tm 65 LD S60 CL E 55-4-
50
__ _._I i'.7*
'*.,... I
- v...... *,
,40 o..
35 5
0 5
10 15 20 25 30 Day of Month BOPM036 Monitor7 (upstrm) --
BOPM037 Monitor3 (dwnstrm)
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 6 June 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for May 2005
Dear Ms. Tanner,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for May 2005.
The simulated temperature increase to the Connecticut River for May 2005 is shown in Figure 1. The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 2.85" F on 21 May 2005 when the permitted limit was 5.0 IF. This occurred at a river flow of 6,011 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of May ranged from 6,011 cfs to 32,000 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for May 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 45.69 OF to 54.79 IF during May 2005.
The downstream measured River Station 3 temperatures ranged from 46.50 -F to 57.67 -F during May 2005. The permitted daily discharge volume from the Station ranged from approximately 313 million gallons per day (MGD) on May 31 to 489 MGD on May 2 (Table I). The permitted daily discharge of 543 MGD was never exceeded.
There were fhree circulating water and service water chlorination treatments during May 2005. Table 2 provides details on the treatment duration, amount of oxidant detected, and the pH during treatment. The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part I, A. 1) and are reported in Table 3.
There were no discharges of radioactive liquids during May 2005 (Table 4).
\\Vyshared1lrPjectsChern State Fi~es\\NPDESMNPDES 20O5mnthly reports and cerfkmton WteMWPDES disiharge and thermal monthly report cover Iette*May 2005.doc
!Entergy
- Page2 The Station's heating boilers were blown down 18 out of 31 days in May 2005, the discharge flow rate on each occurrence was approximately 18 gallons and the hydroquinone concentration ranged from 1.0 to 1.5 ppm per discharge and the NPDES limit is 15.0 ppm (Table 5).
The traveling screens and strainers were backwashed daily during May 2005, the backwash volume ranged from 0.017 to 0.044 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were not backwashed during May 2005. (Fable 7).
The monthly inspection of the chemical containment berm was conducted on May 31, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Environmental Specialist Caisu e
rintendent Chemistry Superintendent
\\\\VyshardPVojectsNem,State FiesWNPDES\\NPDES 2005Vno--hly reports and certifiation letterMY\\NPDES discharge and thermal monthly report cover letterMay 2005.doc
En tergy Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/
VT0000264 PERMITTEE:
Enterev Nuclear Vermont Yankde, LLC MONTHIYEAR OF REPORT: May 2005 REPORT PREPARED BY: Lynn DeWald I certify, under penalty of law, that I have personally examined and am familiar with the information submitted herein. 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 submitted false information, including the possibility of fine and imprisonment.
APPROVED BY:
XAuo ed Agent forth emte DATE J"-4 &,..;20of
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River May, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
480.15 2
488.92 3
488.92 4
488.92 5
484.54 6
480.15 7
480.15 8
480.15 9
484.77 10 488.92 11 480.15 12 440.14 13 480.15 14 480.15 15 480.15 16 480.15 17 488.92 18 480.14 19 480.15 20 480.15 21 480.14 22 480.15 23 427.53 24 480.15 25 480.15 26 420.71 27 480.15 28 480.15 29 480.15 30 480.15 31 313.27 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems May, 2005 (b)
Circulatinq Water (b)
Service Water (a) pH Treatment Free Total Measured Free Total pH Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg/I)
(mg/i)
Treatment m/)
(mg/ )
Treatment 1
2 3
4 5
6 7
8 9
10 11 12 13 14 15 16 17_
18 19 20 21 22 23 105 0.05.
0.18 7.8 0.05 0.11 7.9 24 25 26 90 0.05 0.20 7.9 0.05 0.11 8.0 27 28 29 30 31 76 0.05 0.11 17.6 0.05 0.11 7.9 (a) Time from the introduction of oxidant Into circulating or service water system until oxidant Is no longer detected in the discharge (b) Sample taken from discharge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement May, 2005 (a)
(b)
(C)
Day pH.
.pH pH 1
7.60 7.30 7.40 2
7.60 3
7.50 7.30 7.20 4
7.70 7.30 7.20 5
7.80 6
7.70 7
7.60 8
7.60 9
7.60 10 7.10 7.00 11 7.50 7.40 12 7.90 7.50 7.30 13 7.50 7.40 14 7.40 7.50 15 7.50 7.50 16 7.40 7.50 17 7.30 7.40 18 7.30 7.50 19 7.50 7.50 20 7.40 7.40 21 7.40 7.30 22 7.40 7.40 23 7.90 24 7.30 7.40 25 7.30 26 7.90 27 7.50 28 7.40 29 7.40 30 7.50 31 7.90 7.50 7.40 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - circ water stream (c) Sample taken from TBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged May, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration May, 2005 Dav Discharge Flow Rate (aal/day)
HydroQuinone (ppm) 1 18.0 1.225 2
18.0 1.200 3
18.0 1.200 4
18.0 1.200 5
18.0 1.100 6
18.0 1.080 7
18.0 1.500 8
18.0 1.125 9
18.0 1.150 10 18.0 1.250 11 12 13 14 15 16 18.0 1.oo0-17 18 18.0 1.025 19 18.0 1.050 20 18.0 1.350 21 18.0 1.400 22 23 2418.0 1.200 25 26 18.0 1.200 27 18.0 1.120 29 30 31
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash May, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
0.044 2
0.044 3
0.035 4
0.035 5
0.026 6
0.026 7
0.026 8
0.026 9
0.026 10 0.026 11 0.026 12 0.026 13 0.026 14 0.026 15 0.026 16 0.026 17 0.026 18 0.026 19 0.026 20 0.026 21 0.017 22 0.017 23 0.026 24 0.035 25 0.035 26 0.035 27 0.026 28 0.026 29 0.026 30 0.026 31 0.026 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: May 2005 Backwash Backwash Backwash Total gallons flow rate discharged (gpm)
(MGD)
Date Pump Start Pump Secured Time Time NA 0
0 0
0.00
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for May 2005 14 12 10 U.
Cn tx 8
CL E
-4 2
0 0
.5 10 15 20 25 30 Day of Month
- 1. -
Permitted Limit DeltaT -
C019 from ERFIS I
Figure 2. River Water Temperature at Monitor Sites for May 2005 J
Io 70 60 50
.,U.
40
- o. 30 E
I.-
20 10 0
0
.5 10 15 20 Day of Month I-BOPM036 Monitor7.(upstrm)
BOPM037 Monitor3 (dwnstrm) I 25 30
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157 Vernon, Vl" 05354 Tel 602-257-7711 13 July 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
.Monthly NPDES Discharge Monitoring Report for June 2005
Dear Ms. Tanner,
As required in Section D2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for June 2005.
The simulated temperature increase to the Connecticut River for June 2005 is shown in Figure 1. The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at. river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure I as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 2.85" F on 6 June 2005 when the permitted limit was 3.0 *F. This occurred at a river flow of 3,365 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of June ranged from 2,564 cfs to 32,000 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and-the upstream monitoring Station 7 (black line) for June 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 56.33 IF to 71.72 IF during June 2005.
The downstream measured River Station 3 temperatures ranged from 44.61 'F to 76.72 IF during June 2005. The permitted daily discharge volume from the Station ranged from approximately 305 million gallons per day (MGD) on June 2n to 489 MGD on June 190' (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were ten circulating water and service water chlorination treatments during June 2005. Table 2 provides details on the treatment duration, amount of oxidant detected, and the pH measured during treatment The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part, A. 1) and are reported in Table 3.
%\\Vyshared1Pmpjectsrhem State Fes'NPDESWNDES 2005Nmonfty reports and ceMcation IetteUN'PDES discharge and thermal monthly report cover letter June 2005.doc
~Entergy 0 Page2 There were no discharges ofradioactive liquids during June 2005 (Table 4).
The Station's heating boilers were blown down once in June 2005, the discharge flow rate was approximately 18 gallons and the hydroquinone concentration was 1.13 ppm and the NPDES limit is 15.0 ppm (Table 5).
The traveling screens and strainers were backwashed daily during May 2005, the backwash volume ranged from 0.017 to 0.044 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed once during June 2005. (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.010 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on June 29, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, EntergV Nuclear Vermont Yankee, LLC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent
\\\\Vyshared1VPredsT.hern State ResVPDES*-PDES 205onft repo*ts and certflcaon ketteRUUNNPDES discharge and thenmal monthly report cover eer June 2005.do:
SEntergy Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
PO. Box 157 Vernon, VT 05354 Tel 802-257-7711 Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMITNUMBER:
3-1199 V T0000264 PERMITTEP:
Enteru Nuclear Vermont Yankee, LLC PERMITE:
MONTHIYEAR OF REPORT: June 2005 REPORT PREPARED BY: Lynn DeWald I certify, under penalty of law, that I have personally examined and am familiar with the information submitted herein. 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 submitted false information, including the possibility of fine and imprisonment.
APPROVED BY:
fAor t rt
- A'uthcfe Agnt for the Perznittee DATE
- LZQI-
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling WaterlService Water Table 1. Volume of Water Discharged to River June, 2005 (a)
Discharge Flow Rate (millions of qaVday)
Day 1
322.29 2
305A9 3
480.15 4
480.15 5
484.52 6
419.40 7
484.53 8
480.12 9
418.12 10 480.15 11 484.52 12 484.51 13 432.16 14 484.54 15 484.54 16 426.44 17 484.53 18 484.54 19 488.92 20 416.40 21 484.54 22 484.53 23 403.48 24 484.54 25 448.29 26 484.49 27 408.15 28 484.54 29 484.54 30 421.10 (a) Estimated value based on gate position z
J o-
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems June, 2005 (b)
Circulatin~q Water (b)
Service Water (a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Da (min)
(mgA/I)
Treatment (mg/I)
(mg/I)
Treatment 1
55 0.00 0.00 0.0 0.05 0.11 7.9 2
100 0.05 0.11 8.3 0.05 0.11 8.4 3
4 5
6 100 0.05 0.11 7.9 0.05 0.01 7.9 7
8
- 9 105 0.05 0.11 8.0 0.05
- 0.11 8.0 10 11
=
12,,
13 85 0.05 0.14
.7.8 0.05 0.11 8.0 14
=,
15 is, 16 95 0.05 0.23 7.5 0.50 0.18 7.9 17 18...
19 20 100 0.05 0.27 7.7 1
0.05 0.20 7.7 21 22 23 100 0.05 0.16 7.7 0.05 0.11 7.8 24 25 26,,
27 100 0.05 0.22 7.9 0.05 0.i8 7.9 28 29 30 100 0.05 0.18 8.0 0.05 0.16 8.0 14,0E I____
I___
(a) Time from the Introduction of oxidant into circulating or service water system until oxidant Is no longer detected in the discharge (b) Sample taken from discharge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement June, 2005 (a)
(b)
(c)
Day pH pH PH 1
7.90 2
7.90 3
7.50 7.50 4
7.40 7.40 5
7.60 6
7.90 7
7.50 7.30 7.30 8
7.37 7.44 9
8.00 8.00 10
.7.40 7.30 11 7.50 7.40 12 7.40 7.40 13 7.80 7.80 8.00 14 7.30 7.40 15 7.30 7.30 16 7.50 7.90 17 7.40 7.40 18 7.50 19 7.60 20 7.70 21 7.40 7.30 7.30 22 7.40 23 7.70 24 7.40 25 7.90 26 7.50 27 7.90 28 7.90 7.33 7.40 29 7.90 30 8.00 8.00 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink. circ water stream (c) Sample taken from TBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged June, 2005 There were no radioactive liquid discharges in June, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. V`170000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration June, 2005 Day Discharae Flow Rate (aalldav)
Hvdroauinone (DOm)
I boiler secured 2
boiler secured 3
boiler secured 4
boiler secured 5
boiler secured 6
boiler secured 7
boiler secured 8
boiler secured 9
boiler secured 10 boiler secured 11 boiler secured 12 boiler secured 13 0.0 1.125 14 boiler secured 15 boiler secured 16 boiler secured 17 boilersecured 18 boiler secured 19 boiler secured 20 boiler secured 21 boiler secured 22 boiler secured 23 boiler secured 24 boiler secured 25 boiler secured 26 boiler secured 27 boiler secured 28 boiler secured 29 boiler secured 30
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash June, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
0.035 2
0.035 3
0.026 4
0.026 5
0.017 6
0.026 7
0.017 8
0.017 9
0.017 10 0.017 11 0.026 12 0.026 13 0.026" 14 r
0.026 15 0.026 16 0.035 17 0.035 18 0.044 19 0.044 20 0.035 21 0.035 22 0.026 23 0.026 24 0.017 25 0.017 26 0.017 27 0.017 28 0.017 29 0.026 30 0.026 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: June 2005 Backwash Backwash Backwash flow Total gallons rate (gpm) discharged (MGD)
Date Pump Start Pump Secured Time Time 106/02/2005 1427 1435 135 0.001
I I
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for June 2005 I
~--
LL C)
- 0 V
E 9
I 0
5 10 15 20 25 Day of Month L
Permtted Limit DeltaT ---
C019 from ERFISJ 30
Figure 2. River Water Temperature at Monitor Sites for Jun 2005
!i I
9 8
Station 3 Thermistor 4-.Calibration. June 7, 2005 LL 7
5 4
0 0
.5 10 "5
r 15 Day of Month 20 25 30 i --.. BOPM036 Monitor7 (upstrm)
BOPM037 Monitor3 (dwnstrm)..
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
E nterg P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 12 August 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for July 2005
Dear Ms. Tanner,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for July 2005. The Station was forced into an unplanned outage when complications in a switchyard which triggered an automatic shutdown of the Station. The outage rin from July 25 at 1526 through July 28 at 1436.
The simulated temperature increase to the Connecticut River for July 2005 is shown in Figure 1... The.
simulation is based on electronically acquired five-minute river discharge data from the Vemc~n Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 1.97" F on 1 July 2005 when the permitted limit was 2.0 *F. This occurred at a river flow of 6,760 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of July ranged from 1,530 cfs to 14,439 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for July 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 7036 'F to 76.89 IF during July 2005.
The downstream measured River Station 3 temperatures ranged from 72.44 'F to 81.27 IF during July 2005. The permitted daily discharge volume from the Station ranged from approximately 262 million gallons per day (MGD) on July 21 to 485 MGD on several days in July (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were seven circulating water and service water chlorination treatments during July 2005. Table 2 provides details on the treatment duration, amount of oxidant detected, and the pH measured during treatment The required daily circulating water and service water pH values were obtained from water X\\Vyshared1lPrcjeds\\Chem State FdesNPDES\\NPDES 2005\\nonthly reports and certification IetterJUL&NPDES discharge and thermal monthly report cover letter July 2005.doc
~Entergy 0 Page2 taken as grab samples from a tap off of each system. (Permit requirement Part I, A. 1) and are reported in Table 3.
There were no discharges of radioactive liquids during July 2005 (Table 4).
The Station's heating boilers were secured throughout July 2005, therefore no discharges occurred (Table 5).
The traveling screens and strainers were backwashed daily during July 2005, the backwash volume ranged from 0.017 to 0.026 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed once during July 2005 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.010 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on August 1, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent
\\ysharedl\\ProjedsýChem State Fies\\NPDES\\NPDES 200SNnonthly reports and cerification letterULUNPDES dscharme and thermal monthly report cover letter July 2005.doc
--- Entrgy Entergy Nuclear Vermont Yankee, LLC I
Entergy Nuclear Vermnont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/ VT0000264 PERMITTEE:
Entergy Nuclear Vermont Yankee, LLC MONTH/YEAR OF REPORT: July 2005 REPORT PREPARED BY: Lynn DeWald I certify, under penalty of law, that I have personally examined and am familiar with the information submitted herein. 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 submitted false information, including the possibility of fine and imprisonment.
APPROVED BY:,Aw>#UýMWAQ( A-e-4!.4 Authorized Agent for the Perinfee DATE Oft 10%
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River July, 2005 f
(a)
Discharge Flow Rate (millions of gal/dav)
Day 1
484.54 2
484.5'2 3
484.54 4
484.54 5
364.95 6
358.58 7
350.2 8
368.93 9
369.00 10 484.54 11 484.47 12 443.08 13 484.50 14 344.24 15 429.08 16 385.55 17 360.28 18 385.66 19 419.93 20 329.88 21 262.37 22 397.62 23 465.02 24 466.36 25 397M0 26 331.80 27 327.4:1 28 425.61 29 433.96 30 428.03 31 385.38 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VTo0o0264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems July, 2005 (b)
Circulatin-q Water (b)
Service Water (a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mgII)
(mg/I)
Treatment (mg/I)
(mg/I)
Treatment 2
3 4
5 100 0.05 0.23 8.1 0.05 0.16 8.1 6
7 95 0.05 0.20 7.5 0.05 0.18 7.6 8
9 10 11 12 65 0.05 0.16 8.0 0.05 0.11 B.0 13 14 66 0.05 0.11 8.2 0.05 0.11 8.2 15 16 17 18 65 0.05 0.20 8.1 0.05 0.11 8.2 19 20 21 65 0.05 0.25 7.9 0.05 0.16 8.0 22 23 24 25 65 0.05 0.29 7.6 0.05 0.16 7.8 26 27 28 29 30 31 (a) Time from the Introduction of oxidant into circulating or service water system until oxidant is no longer detected In the discharge (b) Sample taken from discharge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement July, 2005 (a)
(b)
(C)
Day pH pH pH 1
7.80 2
7.90 3
7.90 4
7.90 5
7.46 6
8.00 7
7.60 8
8.10 9
8.10 10 8.00 11 7.50 12
.8.00 7.40 13 8.10 14 8.20 15 8.10 16 8.10 17 8.00 18 8.10 19 7.70 7.40 20 7.90 7.37 21 7.90 22 7.90 23 8.00 24 7.90 25 7.60 26 7.00 7.20 7.20 27 7.40 28 7.60 29 8.00 30 7.80 31 7.80 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - drc water stream (c) Sample taken from TBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids I
Table 4. Volume of Radioactive Liquid Discharged July, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT000264 Discharge No. 003, Plant Heating Boiler Blowdown I9 Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration July, 2005 Day Discharqe Flow Rate (qal/dav)
Hydroauinone (0Dm) 1 boilers secured NA 2
boilers secured NA 3
boilers secured NA 4
boilers secured NA 5
boilers secured NA 6
boilers secured NA 7
boilers secured NA 8
boilers secured NA 9
boilers secured I4A 10 boilers secured NA 11 boilers secured NA 12 boilers secured NA 13 boilers secured NA 14 boilers secured NA 15 boilers secured NA 16 boilers secured NA 17 boilers secured NA 18 boilers secured NA 19 boilers secured NA 20 boilers secured NA 21 boilers secured NA 22 boilers secured NA 23 boilers secured NA 24 boilers secured NA 25 boilers secured NA 26 boilers secured NA 27 boilers secured NA 28 boilers secured NA 29 boilers secured NA 30 boilers secured NA 31 boilers secured NA
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VTo0o0264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash July, 2005 I
(a)
Discharge Flow Rate (millions of aaVdav)
Day 1
0.017 2
0.017 3
0.017 4
0.017 5
0.017 6
0.017 7
0.017 8
0.017 9
0.017 10 0.026 11 0.026 12 0.026 13 0.017 14 0.017 15 0.017 16 0.017 17 0.017 18 0.017 19 0.017 20 0.017 21 0.017 22 0.017 23 0.017 24 0.017 25 0.017 26 0.017 27 0.017 28 0.017 29 0.017 30 0.017 31 0.017 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: July 2005 Back-wash Backwash Backwash Total gallons flow rate discharged (gpm)
(MGD)
Date Pump Start Pump Secured Time Time 07/14/2005 2140 2150 140 0.001
14 12 Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for July 2005 L-0) 0 CL EU C-!
10 8
6 4
2 0
0 5
10 15 20 25 30 Day of Month I u Permitted Limit DeltaT -C019 from ERFIS I i.
Figure 2. River Water Temperature at Monitor Sites for July 2005 84 82 80 78 E 76.
74 72-70..
0 5
10 15 20 Day of Month I
BOPM036 Monitor7 (upstrm) -
BOPM037 Monitor3 (dwnstrm) 25 30 4
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yarkee 322 Governor Hunt Rd.
vmmE nterg P.O.
Box 157 Vernon, VT 05354 Tel 802-257-7711 22 September 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for August 2005
Dear Ms. Tanner,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for August 2005 The simulated temperature increase to the Connecticut River for August 2005 is shown in Figure 1. The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 1.95" F on 3 August 2005 when the permitted limit was 2.0 `F. This occurred at a river flow of 4,908 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of August ranged from 1,279 efs to 7,068 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for August 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 73.22 'F to 78.14 'F during August 2005. The downstream measured River Station 3 temperatures ranged from 75.10 *F to 82.53 *F during August 2005. The permitted daily discharge volume from the Station ranged from approximately 130 million gallons per day (MGD) on August 8 to 485 MGD on. August 3 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were nine circulating water and service water chlorination treatments during August 2005. Table 2 provides details on the treatment duration, amount of oxidant detected, and the pH measured during treatment. The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Penrmit requirement Part I, A. 1) and are reported in Table 3.
\\\\Vyshared1lPrcjeds\\Chem State FIesNPDESNPDES 2005"monthly reports and certfication WetteWJUGNPDES discharge and thermal monthly report cover letter August 2005.doc
- Entery" 0 Page2 There were no discharges of radioactive liquids during August 2005 (Table 4).
The Station's heating boilers were secured throughout August 2005, therefore no discharges occurred (Table 5).
The traveling screens and strainers were backwashed daily during August 2005, the backwash volume was approximately 0.017 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed once during August 2005 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.010 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on August 29, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent
\\\\Vsharedlvroiects\\Chem State Files\\NPDES\\NPDES 2005'nonthly reports and certification letteMUG\\NPDES discharge and thermal monthly report cover letterAugust 2005,doc
'%--Entergy Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 GovernorHunt Rd.
P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 Entergy Nuclear Vermont Yankee, LLC Entergy.Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/ VTOO00264 PERMITTEE:
Enter'gv Nuclear Vermont Yanke6,LLC MONTH/YEAR OF REPORT: August 2005 REPORT PREPARED BY: Lynn DeWald I certify, under penalty of law, that I have personally examined and am familiar with the information submitted herein. 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 submitted false information, including the possibility of fine and imprisonment.
APPROVEDtBY:
AgentLfort___ermitte Wtrzed Agent for the Permittee DATE~2~,2*~
Table 1. Volume of Water Discharged to River August, 2005 (a)
Discharge Flow Rate (millions of iqaVdav)
Day 1
266.27 2
331.67 3
484.53 4
404.05 5
376.00 6
322.78 7
320.65 8
,129.56
'9 305.37 10 199.51 11 173.04 12 154.53 13 146.59 14 187.28 15 213.75 16 303.26 17 306.62 18 392.53 19 379.73 20 177.91 21 147.15 22 322.07 23 405.15 24 312.33 25 204.06 26 232.59 27 152.17 28 154.94 29 272.79 30 372.73 31 363.19 (a) Estimated value based on gate position
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: August 2005 Backwash Backwash Backwash Total gallons flow rate discharged (gpm)
(MGD)
Date Pump Start Pump Secured Time Time 08/15/2005 1218 1228 130 0.001
Table 1. Volume of Water Discharged to River August, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
16.97 2
331.67 3
484.53 4
404.05 5
376.00 6
322.78 7
320.65 8
129.56 9
305.37 10 199.51 11 173.04 12 154.53 13 146.59 14 187.28 15 213.75 16 303.26 17 306.62 18 392.53 19 379.73 20 177.91 21 147.15 22 322.07 23 405.15 24 312.33 25 204.06 26 232.59 27 152.17 28 154.94 29 272.79 30 372.73 31 363.19 (a) Estimated value based on gate position
Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems August, 2005 (b)
Circulatinci Water (b)
Service Water (a) pH p"-H Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg/I)
(mg/I)
Treatment (mg/I)
(mg/I)
Treatment 1
110 0.05 0.18 7.6 0.05 0.14 7.7 2
3 4
110 0.05 0.14 8.0 0.05 0.10 8.1 5.6 7
=,
8 95 0.05 0.23 8.0 0.05 0.25 8.0 9
10 11 90 0.05 0.20 8.3 0.05 0.16 8.3 12 13 14 15 65 0.05 0.38 8.2 0.05 0.27 8.3 16 17 18 65 0.05 0.27 7.9 0.05 0.18 8.0 1920 21 22 90 0.05 0.11 8.2 0.05 0.11 8.2 23 24 25 85 0.05 0.18 7.8 0.05 0.11 8.0 26 27 28 1
-1 8.1 29 100 0.05 0.11 7.8 0.05 0.11 8.1 30 31 (a) Time from the introduction of oxidant into circulating or service water system until oxidant is no longer detected in the discharge (b) Sample taken from discharge structure
Table 3. Daily Condenser Water pH Measurement August, 2005 (a)
(b)
(c)
Day pH pH pH 1
.7.60 2
8.10 7.40 3
8.10 4
8.00 5
8.00 6
8.10 7
8.00 8
8.00 9
8.10 7.65 7.60 10 8.20 7.70 7.60 11 8.30 8.30 8.30 12 8.10 8.10 8.10 13 8.00 "
14 8.00 15 8.20 8.30 16 8.00 7.44 7.60 17 7.80 7.60 18 8.00 19 7.90 20 7.90 21 8.20 22 8.20 23 8.20 7.40 24 8.00 25 7.80 26 7.90 27 8.00 28 8.10 29 7.80 8.10 30 8.00 7.30 31 8.00 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - circ water stream (c) Sample taken from TBCCW sample sink - service water stream
Table 4. Volume of Radioactive Liquid Discharged August, 2005 There were no radioactive liquid discharges in August,.2005
.4 a..
a.
Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration August, 2005 Day Discharge Flow Rate (gaVday)
Hydroquinone (ppm)
I boiler secured 2
boiler secured 3
boiler secured 4
boiler secured 5
boiler secured 6
boiler secured 7
boiler secured 8
boiler secured 9
boiler secured 10 boiler secured 11 boiler secured 12 boiler secured 13 boiler secured 14 boiler secured 15 boiler secured 16 boiler secured 17 boiler secured 18 boiler secured 19 boiler secured 20 boiler secured 21 boiler secured 22 boiler secured 23 boiler secured 24 boiler secured 25 boiler secured 26 boiler secured 27 boiler secured 28 boiler secured 29 boiler secured 30 boiler secured 31 boiler secured
Table 6. Strainer and Traveling Screen Backwash August, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
0.017 2
0.017 3
0.017 4
0.017 5
0.017 6
0.017 7
0.017 8
0.017 9
0.017 10 0.017 11 0.017 12 0.017 13 0.017 14 0.017 15 0.017 16 0.017 17 0.017 18 0.017 19 0.017 20 0.017 21 0.017 22 0.017 2:3 0.017 24 0.017 25 0.017 26 0.017 27 0.017 28 0.017 29 0.017.
30 0.017 31 0.01'7 (a) Estimated.value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: August 2005 Backwash Backwash Backwash Total gallons flow rate discharged (gpm)
(MGD)
Date Pump Start Pump Secured Time Time 08/15/2005 1218 1228 130 0.001 I
Figure 1. River Water Temperature Change (Delta T) due to Plant Discharge for August 2005 14 12 10 U.
E 9.
8 6
4 2
0 0
5 10 15 20 25 30 Day of Month Permitted Limit DeltaT -
C019 from ERFIS
Figure 2. River Water Temperature at Monitor Sites for August 2005 84 82 80 -'
78 E 76->'
74 72 70 2...
0 5
10 15 20 25 30 Day of Month I-BOPMO36 Monitor7 (upstrm) -
BOPM037 Monitor3 (dwnstrm) I
.*.-.--...ý *...': A "
I.:.,.
A ;...ý I-
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 5 October 2005 Ms. Theresd Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for September 2005
Dear Ms. Tanner,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for September 2005 o
The simulated temperature increase to the Connecticut River for September 2005 is shown in Figure 1.
The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 1.95" F on 5 September 2005 when the permitted limit was 2.0 IF. This occurred at a river flow of 5,648 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of September ranged from 1,509 cfs to 19,827 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for September 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 65.56 IF to 73.50 IF during September 2005. The downstream measured River Station 3 temperatures ranged from 65.69 IF to 76.26 IF during September 2005. The permitted daily discharge volume from the Station ranged from approximately 129 million gallons per day (MGD) on September 26 to 485 MGD on September 2-4 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were nine circulating water and service water chlorination treatments during September 2005.
Table 2 provides details on the treatment duration, amount of oxidant detected, and the pH measured during treatment. The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part I, A. 1) and are reported in Table 3.
\\\\VysharedltProjectsChem State Files\\NPDES\\NPDES 2005\\nonthly reports and certification letter\\SEPNPDES discharge and thermal monthly report cover letter September 2005.doc
0 Page 2 There were no discharges of radioactive liquids during September 2005 (Table 4).
The Station's heating boilers were blown down twice in September 2005. In both instances the discharge flow was 18.0 gallons and the hydroquinone concentration was well below the permitted limit 15.0 ppm (Table 5).
The traveling screens and strainers were backwashed daily during September 2005, the backwash volume ranged from approximately 0.017 to 0.026 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed once during September 2005 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.010 million gallons perday.
The monthly inspection of the chemical containment berm was conducted on September 27, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Environmental Specialist Samuel A. Wender IV Chemistry Superintendent
\\\\Vysharedl\\Proects\\Chenm State FesNNPDES'\\NPDES 200ronthly reports and cerlfficaton letteASEPRNPDES dsdmW and thermal monthly report cover letter September 2005.doc U
vEntergy Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/
VT0000264 Enterav Nuclear Vermont Yankge. LLC PERMITTEE MONTH/YEAR OF REPORT: September 2005 REPORT PREPARED BY: Lynn DeWald I certify, under penalty of law, that I have personally examined and am familiar with the information submitted herein. 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 submitted false information, including the possibility of fine and imprisonment.
APPROVED BY:
Aut ioriz66 Agent for the Permittee DATE 0v
. S't Z5"
Table 1. Volume of Water Discharged to River September, 2005 (a)
Discharge Flow Rate (millions of aal/dav)
Day 1
418.04 2
484.52 3
484.50 4
484.50 5
389.65 6
362.61 7
303.00 8
170.65 9
286.92 10 404.58 11 345.37 12 214.78 13 270.05 14 147.74 15 132.19 16 120.31 17 213.92 18 277.97 19 297.24 20 335.04 21 282.83 22 232.88 23 261.25 24 458.84 25 306.22 26 129.22 27 219.54 28 338.41 29 231.63 30 236.08 (a) Estimated value based on gate position
Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems September, 2005 (b)
Circulatina Water (b)
Service Water (a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg/I)
(mg/I)
Treatment (mg/I)
(mg/I)
Treatment 1
95 0.05 0.11 8.0 0.05 0.11 8.0 2
3 4
5 6
95 0.05
.0.14 7.8 0.05 0.16 7.8 7
8 9
85 0.05 0.11 7.9 0.05 0.11 7.9 10 11 12 80 0.05 0.11 8.1 0.05 0.11 8.2 13 14 15 65 0.05 0.23 8.1 0.05 0.16 8.2 16 17 18 19 65 0.05 0.16 7.7 0.05 0.16 8.0 20 21 22 65 0.05 0.11 7.8 0.05 0.11 8.0 23 24 25 26 65 0.05 0.11 8.2 0.05 0.11 8.2 27 28 29 65 0.05 0.11 7.8 0.05 0.11 8.2 30 I
I (a) Time from the Introduction of oxidant into circulating or service water system until oxidant is no longer detected in the discharge (b) Sample taken from discharge structure
Table 3. Daily Condenser Water pH Measurement September, 2005 (a)
(b)
(c)
Day pH pH pH I
2 7.80 3
7.50 7.40 7.40 4
8.00 8.00 5
7.90 7.90 7.90 6
7.80 7.80 7.80 7
8.00 8
8.00 9
7.90 10 7.70 11 7.90 12 8.20 13 7.40 7.40 14 8.20 15 8.10 16 8.10 17 8.00 18 8.00 19 8.00 20 8.00 21 8.00 8.00 8.00 22 8.00 7.80 8.00 23 8.00 8.00 8.00 24 8.00.
25 7.90 26 8.10 27 8.00 28 8.10 29 7.80 30 8.10 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink -circ water stream (c) Sample taken from TBCCW sample sink - service water stream
Table 4. Volume of Radioactive Liquid Discharged September, 2005 There were no radioactive liquid discharges in September, 2005
Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration September, 2005 Day Discharae Flow Rate (aalldav)
Hvdroauinone (oom)
,I 1
2 3
4.5 6
8 9
10 11 12 13 14 15 16 17
° 18 19 20 21 22 23 24 25 26 27 28 29 18.0 0.450 30 18.0 1.020
Table 6. Strainer and Traveling Screen Backwash September, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
0.017 2
0.026 3
0.026 4
0.017 5
0.017 6
0.017 7
0.017 8
0.017 9
0.017 10 0.017 11 0.017 12 0.017 13 0.017 14 0.017 15 0.017 16 0.017 17 0.017 18 0.017 19 0.017 20 0.017 21 0.017 22 0.017 23 0.017 24 0.017 25 0.017 26 0.017 27 0.017 28 0.017 29 0.017 30 0.017 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: September 2005 Backwash Backvash Backwash flow Total gallons rate (gpm) discharged (MGD)
Date Pump Start Pump Secured Time Time 09/10/20051 20121 2017 125 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for September 2005 14 12 CL E
9 10 8
6 4
2 0
0 5
10 15 20 25 Day of Month I
Permitted Limit DeltaT -
C019 from ERFIS 30 a,
Figure 2. River Water Temperature at Monitor Sites for September 2005 79 77 75 73 E0 2 71 69 67 65 0
5 10 15 20 25 Day of Month 30 I-BOPM036 Monitor7 (upstrm) ---- BOPM037 Monitor3 (dwnstrm) I
- Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
Vernon, V" 05354 Tel 802-257-7711 14 November 2005 Ms. Theresa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterb.ury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for October 2005
Dear Ms. Tanner,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for October 2005. Vermont Yankee was in a refueling and maintenance outage from October 22, 2005 and the Plant remained shut down for the remainder of October.
The simulated temperature increase to the Connecticut River for October 2005 is shown in Figure 1. The simulation is bined on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed 'from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 2.36" F on 12 October 2005 when the permitted limit was 4.0 'F. This occurred at a river flow of 7,239 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of October ranged from 1,617 cfs to 42,424 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for October 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 4524 'F to 65.81 'F during October 2005. The downstream measured River Station 3 temperatures ranged from 44.12 'F to 65.12 IF during October 2005. The permitted daily discharge volume from the Station ranged from 0.00 million gallons per day (MGD) beginning on October 25 and lasting through the end of October, to 484 MGD on several days in mid-October (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were two circulating water and three service water chlorination treatments during October 2005.
Table 2 provides details on the trelitment duration, amount of oxidant detected, and the pH measured during treatment. The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part I, A. 1) and are reported in Table 3.
\\\\VysharedlProjects\\Chem State FilesWNPDES\\NPDES 2005'nonthly reports and certification Ietter\\OCT\\,NPDES discharge and thermal monthly report cover letter October 2005.doc
En ter~gy 0 Page 2 There were no discharges of radioactive liquids during October 2005 (Table 4).
The Station's heating boilers were blown down a dozen times October 2005. In all instances thedischarge flow was 18.0 gallons and the hydroquinone concentration was well below the permitted limit 15.0 ppm (Table 5).
The traveling screens and strainers were backwashed daily during October 2005, the backwash volume ranged from approximately 0.017 to 0.044 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed once during October 2005 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.010 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on October 27, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC J'IVt A
Samuel A. Wender IV Chemistry Superintendent Lynn DeWald Environmental Specialist
-7 m*,
I\\VysharedI:PrectsMChem State Files\\NPDESXNPDES 20051monthly reports and certification letter\\OCT\\NPDES discharge and thermal monthly report cover letter October 2005.doc
SEn tergy Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/
VT0000264 PERMITTEE:
Enterav Nuclear Vermont Yankee, LLC MONTH/YEAR OF REPORT: October 2005 REPORT PREPARED BY: Lynn DeWald I certify, under penalty of law, that I have personally examined and am familiar with the information submitted herein. 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 submitted false information, including the possibility of fine and imprisonment.
APPROVED BY: AthriedAgntfoteer__e Aut rized Agent for the Permittee DATE NVZv(/j
/'t /ý 2-O6, ¶
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River October, 2005 14 (a)
Discharge Flow Rate (millions of gaVday)
Day 1
365.55 2
372.81 3
220.96 4
106.01 5
165.53 6
240.51 7
225.28 8
345.06 9
479.08 10 480.62 11 484.34 12 479.77 13 484.30 14 484.31 15 463.92 16 484.30..
17 479.93 18 426.96
.19 479.93 20
- 479.89 21 479.91 22 442.73 23 262.06 24 14.62 25 01.93 26 01.93 27 01.93 28 01.93 29 01.93 30 01.93 31 01.93 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems October, 2005 (b)
Circulating Water (b)
(a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg/I)
(mg/I)
Treatment (mg/I)
(mg/I)
Treatment 2
3 65 0.05 0.25 8.0 0.05 0.16 8.2 4
- 5.
6 100 0.05 0.34 8.1 0.05 0.25 8.2 7
8 10 11 12 13 14 15 16 17 18 45 0.05 0.11 7.4 19 20 21 22 23 24 25 26 27
- 28 29 30 31 (a) Time from the introduction of oxidant into circulating or service water system until oxidant is no longer detected in the discharge (b) Sample taken from discharge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. V'F0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement October, 2005 (a)
(b)
(c)
Day pH pH pH 1
8.10 2
8.10 3
8.20 4
8.10 7.50 5
8.10 6
8.10 7
8.00 8
8.00 9
7.30 7.40 10 7.40 11 7.40 7.30 12 7.50 13 7.30 14 7.30) 15 7.70 16 7.30 17 7.20 18 7.40 7.20 19 7.20 20 7.20 21 7.30 22 7.30 23 7.20 24 7.40 25 7.30 26 7.20 27 7.20 28 7.20 29 7.20 30 7.10 31 7.40 7.20 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - circ water stream (c) Sample taken from TBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids It Table 4. Volume of Radioactive Liquid Discharged October, 2005 There were no radioactive liquid discharges in October, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. V'o0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Uoiler Blowdown Discharge Flow Rate and Hydroquinone Concentration October, 2005 Day Discharge Flow Rate (gal/day)
Hydroquinone (ppm) 2 3
4 5
6 7.
8 9
10 11 12 13 14 15 16 17 18 18.0 1.000 19 20 21 18.0 0.625 22 18.0 1.025 23 18.0 1.500 24 18.0 1.525 25 18.0 1.050 26 18.0 1.000 27 18.0 1.200 28 18.0 1.325 29 18.0 1.200 30 18.0 1.500 31 18.0 1.800
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. V'r0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash October, 2005 (a).
Discharge Flow Rate (millions of gaVday)
Day 1
0.017 2
0.017 3
0.017 4
0.017 5
0.017 6
0.017 7
0.017 8
0.026 9
0.044 10 0.044 11 0.044 12 0.035 13 0.026 14 0.026 15 0.044 16 0.044 17 0.044 18 0.044 19 0.044 20 0.044 21 0.044 22 0.035 23 0.035 24 0.035 25 0.044 26 0.044 27 0.044 28 0.044 29 0.035 30 0.035 31 0.035 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: October 2005 9
Backwash Backwash Backwash flow Total gallons rate (gpm) discharged Date Pump Start Pump (MGD)
Secured Time Time 10/05/2005 1500 1508 125 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for October 2005 14 12 10 U.
0 0)
(U C-,
a, 0.E a,
I-4 4
SUKA 2
0 0
5 10 15 Day of Month 20 25 30 I
K Permitted Limit DeltaT -*019 from ERFIS I I
Figure 2. River Water Temperature at Monitor Sites for October 2005 70 65 60 ILL "0
= 55 E
50 45 40 0
5 10 15 20 25:
30 Day of Month BOPM036 Monitor7 (upstrm)
-,- BOPM037 Monitor3 (dwnstrm)
At"'
- .*.~.*........'
3/4.
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee H
1-1,2-rn322 Governor Hunt Rd.
E nteL~~5 P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 6 December 2005 Ms. Thcrcsa Tanner Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street - Sewing Building Waterbur3y VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for November 2005
Dear Ms. Tanner,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for November 2005. Vermont Yankee was in a refueling and maintenance outage from October 22, 2005 through November 10, 2005.
The simulated temperature increase to the Connecticut River for November 2005 is shomvil in Figure 1.
The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 2.33" F on 29 November 2005 when the permitted limit was 13.4 'F. This occurred at a river flow of 8,229 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of November ranged from 8,228 cis to 53,010 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for November 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 37.42'F to 48.44°F during November 2005. The downstream measured River Station 3 temperatures ranged from 34.89 *F to 47.53 'F during November 2005. The permitted daily discharge volume from the Station ranged from 0.00 million gallons per day (MGD) during the refueling outage and through November 10, 2005, to 323 MGD on November 30, 2005 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
"llicre were two service water and no circulating water chlorination treatments during November 2005.
Table 2 provides details on the treatment duration, amount of oxidant detected, and the p1H measured during treatment. The required daily circulating water and service water pl1-values were obtained from water taken as grab samples from a tap off of each system. (Pernit requirement Part I, A. 1) and are reported in Table 3.
\\\\Vysharedl1rojects\\Chem State Fi!es\\NPDES"NPDES 2005Vmnonthly reports and certification letteANOVINPES discharge and thermal monthly report cover letter November 2005.doc
- Page2 There were no discharges of radioactive liquids during November 2005 (Table 4).
The Station's heating boilers were blown daily during November 2005. In all instances the discharge flow was 18.0 gallons and the hydroquinone concentration,as well below the permitted limit 15.0 ppm (Table 5).
The traveling screens and strainers were backwashed daily during November 2005, the backwash volume ranged from approximately 0.026 to 0.044 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
The water treatment carbon filters were backwashed once during November 2005 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.010 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on November 10, 2005, there were no deficiencies identified.
Please do not hesitate to call if you have any questions or concerns with this informlation (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent
\\\\Vyshared1\\Projects\\Chem State Files\\NPDESWlPDES 2005\\monthly reports and certification letterANOVJPDES discharge and thermal monthly report cover letter November 2005.doc
._ ntergy Nuclear Northeast, Vermont Yank.
Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River November, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
.01.93 2
01.93 3
01.93 4
06.25 5
01.93 6
01.93 7
07.24 8
69.89 9
174.60 10 174.61 11 301.83 12 264.69 13 322.93 14 319.09 15 322.91 16 322.94 17 322.91 18 322.89 19 322.88 20 322.90 21 321.72 22 331.69 23 322.87 24 322.87 25 322.87 26 322.86 27 322.90 28 321.88 29 317.82 30 322.97 (a) Estimated value based on gate position
.,tergy Nuclear Northeast, Vermont YankL..
Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems November, 2005 (b)
Circulating Water (b)
Service Water (a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg/I)
(mg/I)
Treatment (mg/I)
(mg/I)
Treatment 2
3 4
5 6
7 8
9
,m. 10 11 12 13 14 15 16 55 0.05 0.11 7.4 17 18 19 20 21 22 65 0.05 0.11 7.3 23 24 25 26 27 28 29 30 (a) Time from the introduction of oxidant into circulating or service water system until oxidant is no longer detected in the discharge (b) Sample taken from discharge structure
,.tergy Nuclear Northeast, Vermont Yank6 __
Permit 3-1199, NPDES No. VToo00264 Discharge No. 001, Condenser Cooling Water/ Service Water Table 3. Daily Condenser Water pH Measurement November, 2005 (a)
(b)
(c)
Day pH pH pH 1
7.20 2
7.10 3
7.10 4
7.20 5
7.30 6
7.20 7
7.20 8
7.20 9
7.10 7.30 10 7.30 7.40 11 7.20 7.30 12 7.30 7.40 13 7.30 7.50 14 7.30 7.20 15 7.30 7.40 16 7.30 7.40 17 7.50 7.50 18 7.40 7.50 19 7.30 7.40 20 7.30 7.40 21 7.40 7.40 22 7.20 7.30 23 7.34 7.46 24 7.30 7.40 25 7.30 7.30 26 7.40 7.30 27 7.30 7.50 28 7.30 7.40 29 7.30 7.30 30 7.30 7.40 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - circ water stream (c) Sample taken from TBCCW sample sink - service water stream
._.ntergy Nuclear Northeast, Vermont Yanke.
Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged November, 2005 There were no radioactive liquid discharges in November, 2005
_.,itergy Nuclear Northeast, Vermont YankF.,.
Permit 3-1199, NPDES No. VTo0o0264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration November, 2005 Day Discharge Flow Rate (gal/day)
Hydroquinone (ppm) 1 18.0 1.550 2
18.0 1.250 3
18.0 1.150 4
0.0 1.250 5
18.0 1.100 6
18.0 1.300 7
18.0 1.100 8
18.0 1.125 9
18.0 1.600 10 18.0 1.875 11 18.0 1.625 12 18.0 1.575 13 18.0 1.650 14 No boiler blowdown 15 18.0 1.125 16 18.0 1.000 17 18.0 1.000 18 18.0 0.825 19 18.0 1.300 20 18.0 1.200 21 18.0 1.075 22 18.0 1.975 23 18.0 2.000 24 18.0 1.225 25 18.0 1.125 26 18.0 0.975 27 18.0 1.375 28 18.0 1.525 29 18.0 1.400 30 18.0 1.325
_..itergy Nuclear Northeast, Vermont Yanke Permit 3-1199, NPDES No. VT0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash November, 2005 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
0.035 2
0.035 3
0.035 4
0.035 5
0.026 6
0.026 7
0.026 8
0.026 9
0.026 10 0.035 11 0.035 12 0.035 13 0.035 14 0.026 15 0.026 16 0.035 17 0.044 18 0.044 19 0.044 20 0.035 21 0.035 22 0.035 23 0.035 24 0.035 25 0.035 26 0.026 27 0.026 28 0.026 29 0.026 30 0.044 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: November 2005 Backwash Backwash Backwash flow Total gallons rate (gpm) discharged (MGD)
Date Pump Start Pump Secured Time Time 11/08/2005 739 745 135 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for November 2005 14 12 10 8
C-,
E 6
4 2
0 1[
0 5
10 15 20 25 30 Day of Month Permitted Limit DeltaT -- C019 from ERFIS
Figure 2. River Water Temperature at Monitor Sites for November 2005 80
-Upstream temperature probe calibration
(.
CD 0.E 70 60 50 40 30 0
I 5
10 15 20 25 30 Day of Month
.-.-. BOPM036 Monit'or7"(upstr-m)
-BOPM037Monitor3 (dwnstrm)
Entergy Nuclear Northeast Entergy Nudear Operations, Inc.
Vermont Yankee 322 Governoir Hunt Rd.
EntergyP.O.
Box 157 Vernon, VT 05354.
Tel 802-257-7711 12 January 2006 Carol Carpenter Vermont A~ency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, VT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC PermitNo. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for December 2005
Dear Carol,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entergy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for December 2005.
The simulated temperature increase to the Connecticut River for December 2005 is shown in Figure 1.
The simulation is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperature observed from the upstream river monitoring Station 7 and Vermont Yankee's operations temperature limits per the NPDES Permit. These are shown on the attached Figure 1 as the red line. The plant thermal discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 4.46 F on 16 December 2005 when the permitted limit was 13.4 AF. This occurred at a river flow of 3,984 cubic feet per second (efs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of Decemberranged from 3,984 cfs to 31,972 cfs.
The hourly average temperature observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for November 2005 is shown in Figure 2.
The upstream measured River Station 7 temperatures ranged from 34.75 IF to 4234 TF during December 2005. The downstream measured River Station 3 temperatures ranged from 32.52 IF to 4239 TF during December 2005.
As you know, beginning on December 19, with assistance from Normandeau Associates, we attempted to retrieve the downstream temperature probe for calibration based on an observation by our control room personnel that the downstream temperature probe was reading cooler than the upstream temperature probe.
Normandeau personnel experienced difficulty in extracting the probe due to significant ice and frozen silt accumulation above the water line within the 8 inch pipe that protrudes out into the river at Station 3, and into which the temperature probe is pushed approximately 25-30 ft out into the river. Our experience has repeatedly demonstrated that when high river flows over run the access point to the pipe into which the probe is fed into the river, that once flows subside, silt accumulates within the pipe above the water line.
During warmer months, water can be pumped into the pipe to flush the silt out into the river thus allowing
\\\\Vyshared1\\Projects\\hem State Files\\NPDES\\NPDES 2005Vnonthly reports and cetification letterDEC\\NPDES dicharge and thermal monthly report cover letter December 2005.doc
OEntergy 0 Page2 the sled upon which the probe is secured to be retrieved. However, because the high river flows continued into mid-December, the silt became frozen within the pipe after the water receded. Efforts to remove the probe continued from December 19w" through the 22r, and included nearly 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> of pumping water down the pipe before the frozen silt finally loosened enough that Normandeau could pull the sled and probe out. Also on the 19%, given the difficulties we were experiencing in retrieving the probe, an OnsetTm StowAway Tidbit temperature logger was thrown out into the river from shore. The StowAway logger is capable of measuring temperatures between 24 and 99 degrees F and with an accuracy of 0.4 degrees F.
The logger was set up to record water temperature at 15 minute intervals and was placed in the river simply in the event that the primary probe and back up WaDaR~m temperature logger could not be retrieved because of the ice.
The primary probe was finally retrieved during late afternoon on the 22"" and was calibrated after the Christmas holiday on December 27th; however upon returning this probe to service, temperature readings transmitted to the VY control room were occasionally erratic. A new probe and cable were calibrated on January 5di and installed on January 6tOh.
No further problems have been encountered with the new probe.
Upon inspection of the old probe and cable, it appears that we inflicted damage to it during the process of reinstalling the equipment back into the river, after the calibration on the 27, as the cable shielding was clearly damaged.
Upon downloading the primary backup WaDaR temperature logger on January 3, 2006, the data was found to be corrupt and unusable. Therefore, the data from the Onset temperature logger is being reported for the downstream Station 3 for the period December 19, through December 31, 2005. A new backup WaDaR logger was installed at the time of the new probe installation at Station 3 0o January 6.th Vermont Yankee's Instrumentation personnel have been able to demonstrate that the original downstream probe performance prior to December 19"' was within calibration and was measuring water temperature accurately. That demonstration was in the form of calibration records for the downstream probe from the spring of 2005 and the subsequent December 27, 2005 calibration of the same thermistor probe. Inquiries from VY's control room staff regarding temperature readings that were cooler downstream than upstream show a great questioning attitude and warranted a check by our instrumentation specialists. That check has been completed and while the results clearly show the probe has remained within calibration, we unfortunately caused significant damage to the original probe during the process of reinstalling it on December 28th. As such, a new probe and cable were subsequently calibrated and installed. With the Station 3 probe operable again, we continued to observe that Station 7 temperatures are warmer than Station 3. Since this trend was still being observed, our instrumentation specialists then recalibrated the upstream Station 7 temperature probe on January 10h. This probe was also found to be measuring accurately based on the calibration results. Therefore, based on VY's calibrated primary temperature probes at Stations 3 and 7 and confirmed by the backup loggers at both Stations, we know with certainty that we are accurately measuring temperatures that are warmer upstream than downstream.
This temperature trend has been occurring since shortly after the very high river flow event associated with the flooding rains the area received beginning on October 8, 2005. My thought between October and mid-December was that the extremely high river flows throughout this time and the constant spilling over Vernon Dam affected the results we were observing. It was not until river discharge began to subside to more seasonally normal flows that I questioned the temperature data. As of today, this trend is still occurring. We are exploring all possibilities that could help explain this trend and will keep you apprised of our findings. It is important to note, in conclusion, that while Entergy believed (because of unusual V\\Vyshared1Projects\\Chem State FilesNPDES\\NPDES 2005rnonthly reports and cerffication letteteDECONPDES discharge and thermal monthly report cover letter December 2005.doc
- Entergy
- Page3 readings) that the downstream monitor was not delivering accurate data, that the unusual readings were correct, the monitor was operating properly, and the station's monitoring process was in compliance with its NPDES',permit. The urgency that both the State and Entergy felt in replacing the probe, as demonstrated in the January 4, 2006 letter from the agency, was understandable but, in the final analysis, unwarranted.
It is important to note that simulated temperature increase to the Connecticut River is based on electronically acquired five-minute river discharge data from the Vernon Dam, VY's five-minute observations of river temperatures at river monitoring Station 7 and thermal heat discharged to the Connecticut River. Compliance with this permit limit can and has been double-checked for the month of December by a calculation that VY's control room operators would use if they lost either upstream or downstream temperature indication in the control room. The formula is:
MWT-MMWE (gross)*15.193 River Flow (CFS)
- Where, MWT= Megawatts Thermal MWE = Megawatts Electric
.15.193= Constant that takes into account the specific heat and density of water and permits a conversion from Megawatts to heat load to the river in CFS0F River Flow = River flow in cubic feet per second as measured at Vernon Dam.
Plots for both methods of demonstrating compliance with the NPDES Permitted limit for the rise in river water temperature are included within this reporL The permitted daily discharge volume from the Station ranged from 316 million gallons per day (MGD) on December 313, to 324 MGD on December 21, 2005 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no service water or circulating water chlorination treatments during December 2005 (able 2).
The required daily circulating water and service water pH values were obtained from water taken as grab samples from a tap off of each system. (Permit requirement Part I, A. 1) and are reported in Table 3.
There were no discharges of radioactive liquids during December 2005 (Table 4).
The Station's heating boilers were blown daily during December 2005. In all instances the discharge flow was 18.0 gallons and the hydroquinone concentration was well below the permitted limit.15.0 ppm (Table 5).
The traveling screens and strainers were backwashed daily during December 2005, the backwash volume ranged from approximately 0.017 to 0.044 million gallons per day, the permitted limit of 0.050 million gallons per day was not exceeded (Table 6).
\\\\VysharedrojectsChem State HlesWNPDES\\NPDES 200M nthly reports and cerification letter*DECMPDES discharge and th=emal monthly report cover letter December 2005.doc
OEntergy 0 Page 4 The water treatment carbon filters were backwashed twice during December 2005 (Table 7). Each discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.010 million gall&ns per day.
The riionthly inspection of the chemical containment berm was conducted on December, 2005, there were no deficiencies identified.
Please do not hesitate to call ifyou have any questions or concerns with this information (802-258-5526).
Sincerely, Entergy Nuclear Vermont Yankee, LLC Lynn DeWald Environmental Specialist Samuel A. Wender IV Chemistry Superintendent cc: Jay Thayer-Entergy Vermont Yankee Site VP William Maguire - Entergy Vermont Yankee General Manager of Plant Operations
\\\\VysharedlU~ects\\Chemn State FilesWNPDES'NPDES 2005Vnonthty reports and certification eterDEC\\NPDES discharge and thermal monthly report cover letter December 2005.doc U
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 1. Volume of Water Discharged to River December, 2005 9
(a)
Discharge Flow Rate (millions of gai/day)
Day 1
321.08 2
322.91 3
322.90 4
322.90 5
322.91 6
322.91 7
322.88 8
322.87 9
322.88 10 322.91 11 319.23 12 317.68 13 317.04 14 316.65 15 316.69 16 316.71
.17 316.69 18 316.41 19 316.34 20 316.31 21 324.88 22 316.30 23 316.32 24 316.31 25 315.84 "26 315.84 27 315.82 28 315.82 29 315.84 30 315.81 31 315.53 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems December, 2005 (b)
Circulatina Water (b)
Service Water (a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg/I)
(mg/I)
Treatment (mg/I)
(mg/I)
Treatment 2
4 5
6 7
11 12.
13 14 15 16 17 18 19 20 21" 22 23 24 25 26 27 28 r
29 30 31 (a) Time from the introduction of oxidant Into circulating or service water system until oxidant is no longer detected in the discharge (b) Sample taken from discharge structure I
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH Measurement December, 2005 (a)
(b)
(c)
Day pH pH PH 1
7.30 7.40 2
7.30 7.40 3
7.20 7.30 4
7.30 7.30 5
7.30 7.30 6
7.30 7.00 7
7.20 7.40 8
7.30 7.30 9
7.30 7.40 10 7.34 7.39 11 7.29 7.33 12 7.40 7.30 13 7.35 7.36 14 7.50 7.40 15 7.40.
7.30 16 7.40 7.40 17 7.30 7.40 18 7.40 7.40 19 7.30
.7.30 20 7.20 7.30 21 7.30 7.30 22 7.40 7.40 23 7.30 24 7.30 7.30 25 7.30 7.30 26 7.30 7.30 27 7.30 7.40 28 7.30 7.30 29 7.30 7.30 30 7.31 7.31 31 7.30 7.30 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - circ water stream (c) Sample taken from TBCCW sample sink - service water stream
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Y
a Table 4. Volume of Radioactive Liquid Discharged December, 2005 There were no radioactive liquid discharges in December, 2005
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VToo00264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration December, 2005 Dav Discharae Flow Rate (qal/dav)
Hvdroauinohe (pim) 1 18.0 1.500 2
18.0 1.500 3
18.0 1.500 4
18.0 1.100 5
18.0 1.000 6
18.0 1.100 7
18.0 1.525 8
18.0 1.825 9
18.0 1.375 10 18.0 1.650 11 18.0
.1.000 12 18.0.
1.325 13 18.0 1.650 14 18.0 1.500 15 18.0 1.430 16 18.0 1.475 17 18.0 1.475 18 18.0 1.450 19 18.0 1.650 20 18.0 1.625
.21 18.0 1.300 22 18.0 1.500 23 18.0 1.225 24 18.0 1.100 25 18.0 1.525 26 18.0 1.025 27 18.0 1.775 28 18.0 1.225 29 18.0 1.475 30 18.0 1.175 31 18.0 1.200
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash December, 2005 (a)
Discharge Flow Rate (millions of gal/dav)
Day 1
0.044 2
0.044 3
0.044 4
0.035 5
0.026 6
0.026 7
0.026 8
0.026 9
0.026 10 0.026 11 0.026 12 0.026 13 0.026 14 0.017 15 0.017 16 0.017 17 0.017 18 0.017 19 0.017 20 0.017 21 0.017 22 0.017 23 0.017 24 0.017 25 0.017 26 0.026 27 0.035 28 0.035 29 0.035 30 0.035 31 0.035 (a) Estimated value based on average river flow rate (cfs)
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter Backwash.
Reporting Period: December 2005 Backwash Backwash Backwash flow rate Total gallons (gpm) discharged Date Pump Start Pump Secured (MGD)
Time Time 12/07/2005 2015 2025 111 0.001 12/23/2005 1112 1120 130 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for Dec 2005 4=
14 12 10 LL CL E
C) 8 6
4 2
0 0
5 10 15 20 25 30 Day of Month w Permitted Limit DeltaT -
C019 from ERFIS
Figure 2. Plot of River Water Temperature at Monitor Sites for Dec 2005, beginning on 12119105 at 1600 the plot uses backup temperature logger data for downstream Station 3.
60 55 50 45 E
40 35 30 05 10 15 20 25 30 Day of Month BOPM036 MonWtor7 (upstrm)
BOPM037 Monitor3 (dwnstrm)
,j
- d.
Figure 3. Confirmatory River Water Temperature Change (Delta T) due to Station Discharge for December 2005, based on (MWT-MWE(gross)*15.193)/CT River Flow.
14 12
- 10 8
CM 6
.4 2
0 0
1 3
4 5
6 8
9 10 11
.13 14 15 16 18 19 20 21 23 24" 25 26 28 29 30 Day of the Month
--*-Permitted Limit DeltaT Delta T Cal per OP 2180
.9,. *t,