ML062920270
| ML062920270 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 09/30/2006 |
| From: | Dewald L Entergy Nuclear Vermont Yankee |
| To: | Emch R, Patton T Argonne National Lab (ANL), NRC/NRR/ADRO/DLR |
| References | |
| %dam200612, TAC MD2297 | |
| Download: ML062920270 (101) | |
Text
.i~~1dEmch_ --VY *2006 DiMR's to date From:
"DeWald, Lynn" <Idewald@entergy.com>
To:
<rle@nrc.gov>, <tlpatton@anl.gov>
Datei-09/30/2006 9:51:34 AM
Subject:
VY 2006 DMR's to date Please disregard the last email entitled 2005 DMR's, as all 2006 DMR's were attached. Too confusing so I'm starting over. Attached herein are the 2006 DMR's prepared to date. 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)
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VY 2006 DMR's to date 09/30/2006 9:49:58 AM "DeWald, Lynn" <ldewald@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 343 TEXT.htm 3616 NPDES State Reports Feb 2006 DMR.pdf NPDES State Report August 006 DMR.PDF NPDES state Report July 2006 DMR.PDF NPDES State Report June 2006 DMR.TIF NPDES State Reports (Jan 2006 DMR).pdf NPDES State Reports - April 2006 DMR.pdf NPDES State Reports - March 2006 DMR.pdf NPDES State Reports - May 2006 DMR.pdf Mime.822 5966123 Date & Time 09/30/2006 9:49:58 AM 351661 550198 496241 1528704 359539 325123 357095 384636 Options Expiration Date:
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ReplyRequested:
Return Notification:
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None Standard No None No Standard Junk Mail Handling Evaluation Results Message is eligible for Junk Mail handling
Ic:\\ternp\\W)20OOO1.TMPP This message was not classified as Junk Mail Junk Mail settings when this message was delivered Junk Mail handling disabled by User Junk Mail handling disabled by Administrator Junk List is not enabled Junk Mail using personal address books is not enabled Block List is not enabled
Richard Emch - VY 2005 DMR's Page 1 From:
To:
Date:
Subject:
"DeWald, Lynn" <ldewald@entergy.com>
<rle@ nrc.gov>, <tlpatton @anl.gov>
09/30/2006 9:48:35 AM VY 2005 DMR's Rich and Terri, 2006 DMR's will follow in separate email. Thanks, Lynn
7c A-fe-iii6MI0000 1.TM P Paae 1
~fi~X~Wi6o~bi.TMP Paae 1 I Mail Envelope Properties (451E759B.CCA : 21: 56522)
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Creation Date From:
Created By:
VY 2005 DMR's 09/30/2006 9:46:57 AM "DeWald, Lynn" <ldewald@entergy.com>
ldewald@entergv.com Recipients nrc.gov OWGWPOO2.HQGWDOO1 RLE (Richard Emch) anl.gov tlpatton Post Office OWGWPO02.HQGWDOO1 Route nrc.gov anl.gov Files Size MESSAGE 77 TEXT.htm 1560 NPDES State Reports Feb 2006 DMR.pdf NPDES State Report August 006 DMR.PDF NPDES state Report July 2006 DMR.PDF NPDES State Report June 2006 DMR.TIF NPDES State Reports (Jan 2006 DMR).pdf NPDES State Reports - April 2006 DMR.pdf NPDES State Reports - March 2006 DMR.pdf NPDES State Reports - May 2006 DMR.pdf Mime.822 5963623 Date & Time 09/30/2006 9:46:57 AM 351661 550198 496241 1528704 359539 325123 357095 384636 Options Expiration Date:
Priority:
ReplyRequested:
Return Notification:
Concealed
Subject:
Security:
None Standard No None No Standard Junk Mail Handling Evaluation Results Message is eligible for Junk Mail handling
c:\\temp 0WlOU6TMP7777R2 This message was not classified as Junk Mail Junk Mail settings when this message was delivered Junk Mail handling disabled by User Junk Mail handling disabled by Administrator Junk List is not enabled Junk Mail using personal address books is not enabled Block List is not enabled
Entergy Nuclear Northeast Vntergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157
.Untff~yVernon, VT 05354 Tel 802-257-7711 13 February 2006 Carol Carpenter 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 2006
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 January 2006.
The simulated temperature increase to the Connecticut River for January 2006 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 2.22" F on 9 January 2005 when the permitted limit was 13.4 AF. This occurred at a river flow of 7,818 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of January ranged from 7,618 cfs to 32,000 cfs.
The hourly average temperatuire observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstreammonitoring Station 7 (black line) for January 2006 is shown in Figure 2. There were three occasions in January where Vermont Yankee lost the upstream River Station 7 temperature indication. These occasions can be seen on Figure 2. Vermont Yankee personnel attempted to troubleshoot this problem, and were led to the Verizon phone line that transmits the data via modem between the upstream Station 7 and Vermont Yankee. Verizon was called and completed the necessary repairs on January 23, 2006. The problem has not occurred since the repairs were completed.
The upstream measured River Station 7 temperatures ranged from 33.92 *F to 36.19 *F during January 2006. The downstream measured River Station 3 temperatures ranged from 32.03 IF to 35.29 *F during January 2006.
By way of reminder and as you are already aware, the data for downstream Station 3, for the first five days of January consists of backup temperature data obtained from the Onset Tidbit temperature loggers and not the primary backup WaDaR data logger. Upon downloading the WaDaR logger, the data file was found to be corrupt.
\\\\Vyshared1WrojepctsrChem State FlseNPDES2'M006Vnonthly reports and certification letterJanWPDES discharge and thermal monxly report cover letter January 2006.doc
SEntergy 0 Page 2 The permitted daily discharge volume from the Station ranged from 218 million gallons per day (MGD) on January 19", to 332 MGD on January 24,2006 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no service water or circulating water chlorination treatments during January 2006. (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 L, A. 1) and are reported in Table 3.
There were no discharges of radioactive liquids during January 2006 (Table 4).
The Station's heating boilers were blown daily during January 2006. 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 January 2006, 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 on three occasions during January 2006 (Table 7).
Each 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 January 25, 2006, 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, LWC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent
\\\\VysharedlProjectsChern State Fi esWPDES=Offinthoy reports and certification letterUanWNPDES discharge and thenntal mont'dy report cover letter January 2006.doc
OEntergy Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont 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: January 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:
Authored Agent for the Permittee DATE,,-I3-04 I
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 January, 2006 (a)
Discharge Flow Rate (millions of.aVdav)
Day 1
314.44 2
275.14 3
314.44 4
314.41 5
314.43 6
314.43 7
314.41 8
314.43 9
314.18 10 313.23 11 300.58 12 301.79 13 314.89 14 313.57 15 270.15 16 225.31 17 224.33 18 228.93 19 218.42 20 322.92 21 322.92 22 322.89 23 331.68 24 331.68 25 322.93 26 322.89 27 331.65 28 322.92 29 322.92 30 305.98 31 316.65 (a) Estimated value based on gate position
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. V-170000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems January, 2006 Circulatinq (b)
Water (b)
Service Water (a)
PH PH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant During Oxidant Oxidant During Day (min)
(mg1 (mg/I)
Treatment (mg/i)
(mg*A)
Treatment 2
23_
34 45_
56_
67_
7 8
810____
911_
102_
13 124_
135.___
146_
157_
169_
1720_
218 1922_
203_
214_
225_
246_
257_
268_
279_
2830_
2931_
(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 January, 2006 (a)
(b)
Day pH pH pH 1
7.30 7.30
.2 7.40 7.40 3
7.30 7.20 4
7.30 7.30 5
-7.30 7.30 6
7.30 7.30 7
7.30 7.30 8
7.30 7.20 9
7.30 7.40 10 7.20 7.30 11 7.40 7.40 12 7.40 13 7.30 7.30 14 7.40 7.40 15 7.30 7.30 16 7.32 7.36 17 7.40 7.30 18 7.30 7.20 19 7.20 7.10 20 7.20 7.20.
21 7.20 7.10 22 7.20 7.20 23 7.20 7.30 24 7.20 7.20 25 7.30 26 7.30 27 7.40 28 7.40 7.40 29 7.40 7.40 30 7.30 7.30 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. VToo00264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged January, 2006 There were no radioactive liquid. discharges in January, 2006
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler blowdown Table 5. Boller Blowdown DischargeFiow Rate and Hydroquinone Concentration January, 2006 Discharoe Flow Rate ({allday)
Hvdrociuinone (;PDml 1
18.0 1.100 2
18.0 1.350 3
18.0 1.050 4
18.0 1.250 5
18.0 1.050 6
18.0 1.250 7
18.0.
1.050 8
18.0 1.125 9
18.0 1.875 10 18.0 1.900 11 18.0 1.300 12 18.0 1.050 13 18.0 1.150 14 18.0 1.125 15 18.0 1.025 16 18.0 1.400 17 18.0 1.025 18 18.0 1.375 19 18.0 1.200 20 18.0 1.400 21 18.0 1.325 22 18.0 1.025 23 18.0' 1.000 24 18.0 1.050 25 1.8.0 1.225 26 18.0 1.475 27 18.0 1.250 28 18.0 1.600 29 18.0 1.300 30 18.0 1.500 31 18.0 1.250 a
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199. NPDES No. VT0000264 Discharge No. 009. Strainer and Traveling Screen Backwash Table 6. Strainerand Traveling Screen Backwash January, 2006 (a)
Discharge Flow Rate (millions of Qallday)
Day 1
0.035 2
0.026 3
0.026 4
0.026 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 0.026 14 0.035 15 0.044 16 0.044 17 0.035 18 0.035 19 0.044 20
- 0.044 21 0.044 22 0.044 23 0.044 24 0.035 25
_0.035 26 0.035 27 0.026 2B 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: January 2006.
Backwash Backwash Backwash flow rate Total gallons (gpm) discharged Date Pump Start Pump Secured (MGD)
Time Time 01/10/2004 2205 2213 135 0.001 01/23/2001 214 2148 150 0.00 01/26/2006 2327 2335 135 0.001
14 12 Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for January 2006 10 L)
IM 0
8 6
4
- 1 2
0 b~iL\\,FUJtYI 0
5 10 15 Day of Month 20 25 30
- Permitted* Limit DeltaT COI9 from ERFIS
.....O
Figure 2. River Water Temperature at Monitor Sites for January 2006 70 60 50 40-30 20 10 0.
Station 7 calibration 1/10/061 IVerizon phone line. Interruptions,
[each lasting under two hours.
0 5
10 15 Day of Month 20 25 30 j-B--"BoPM036.Monltor7'(upstrm)
BOPM037 Monitor3 (dwnstrm)
.U
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee E ntergy 322 Governor Hunt Rd.
1-imp EntffffP0O.
Box 157 Vernon, VT 05354 Tel 802-257-7711 6 March 2006 Carol Carpenter 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 Subjec.t: Monthly NPDES Discharge Monitoring Report for February 2006
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 February 2006.
The simulated temperatum increase to the Connecticut River for February 2006 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 therial heat discharged to the Connecticut River. The NPDES permit limits are based on the ambient five-minute temperatmu 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 2.95" F on 26 February 2006 when the permitted limit was 13.4 *F. This occurred at a river flow of 5,852 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of February ranged from 5,852 ofs 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 February 2006 is shown in Figure 2. The upstream measured River Station 7 temperatures ranged from 34.2 0F to 37.6 *F during February 2006.
The downstream measured River Station 3 temperatures ranged from 33.1 'F to 36.8 *F during February 2006. The permitted daily discharge volume from the Station ranged from 220 million gallons per day (MGD) on February 2e, to 323 MGD on February 9, 2006 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no service water or circulating water chlorination treatments during February 2006 (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) and are reported in Table 3.
\\\\Vyshared1'Projeds1Chem State F'esW*DES=2006nohly reports and certification leWterFebNPDES discharge and thermial monthly report cover letter February 2006.doc
OEntergy 0 Page2 There were no discharges of radioactive liquids during February 2006 (Table 4).
The Station's heating boilers were blown daily during February 2006. 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 February 2006, 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 February 2006 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.001 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on 24 February 2006 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
\\\\VysharedclPjectsrChem State FdeVPDESM6VmonftIy reports and certification letteFeb\\NPDES discharge and thermal monthly report cover letter February 2006.doc
'~
Entergy Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/ VTO000264 PERMITTEE:
Entergy Nuclear Vermont Yankee. 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:
Authorizd Agent for the Permittee DATE
_3 -__ -_(_
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 February, 2006 (a)
Discharge Flow Rate (millions of aalldav)
Day 1"
316.64 2
219.84 3
317.29 4
309.10 5
316.16 6
316.11 7
316.09 8
316.10 9
322.52 10 316.10 11 316.14 12 316.14 13 316.10 14 316.12 15 316.14 16 316.16 17 316.16 18 297.45 19 268.06 20 306.04 21 305.85 22 311.18 23 31 3.74 24 313.75 25 313.75 26
.314.61 27 314.61 28 31,4.62 (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, 2006 There were no treatments during February (b)
(b)
Circulating Water Service Water (a)pH pH Treatment Free Total Measured ýFree Total Measured Duration Oxidant Oxidant During Oxidant Oxi1dant During Dy (mmi)
(mgq)
(mgil)
Treatmnent (mg)
QLgA Treatment 1
2 3
45_
5 6_
67_
7 8_
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 (a) T"ie from the Introduction of oxidant Into circulating or service water system until oxidant is no longer detected In the discharge (b) Sample taken from dischrge structure
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water Table 3. Daily Condenser Water pH February, 2006 Measurement (a)
IbI Cd Day pH pH pH 1
7.30 7.30 2
7.40 7.40 3
7.40 7.40 4
7.30 7.40 5
7.30 7.30 6
7.30 7.30 7
7.30 7.40 8
7.10 9
7.30 7.30 10 7.30 7.30 11 7.30 7.30 12 7.20 7.30 13 7.20 7.20 14 7.30 7.30 15 7.34 7.29 16 7.37 7.36 17 7.40 7.35 18 7.20 19 7.30 20 7.40 21 7.30 22 7.40 7.40 23 7.30 7.30 24 7.30 7.30 25 7.40 7.40 26 7.40 7.30 27 7.30 7.40 28 7.20 7.10 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink -cire 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, 2006
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, 2006 Day Dischame Row Rate (gaVdav)
Hvdroauinone (mvm) 1 18.0 1.550 2
18.0 1.150 3
18.0 1.550 4
18.0 1.200 5
18.0 1.050 6
18.0 1.425 7
18.0 0.875 8
18.0 2.450 9
18.0 0.700 10 18.0 1.950 11 18.0 1.650 12 18.0 1.550 13 18.0 1.250 14 18.0 1.350 15 18.0 1.350 16 18.0 1.625 17 18.0 1.400 18 18.0 1.150 19 0.0 1.325 20 18.0 1.530 21 18.0 1.325 22 18.0 1.450 23 18.0 1.250 24 18.0 1.250 25 18.0 1.075 26 18.0 1.450 27 18.0 1.050 28 18.0 1.125
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 February, 2006 (a)
Discharge Flow Rate (millions of gaVday)
Day 1
0.026 2
0.026 3
0.026 4
0.035 5
0.044 6
0.044 7
0.044 8
0.035 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 0.017 24 0.017 25 0.017 26 0.017 27 0.017 28 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: February 2006.
Backwash Backwash Backwash flow rate Total gallons (gpm) discharged Date Pump Start Pump Secured (MGD)
Time Time 02/11/2006 1007 10151 135 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for February 2006 14 12 IV 0,a)
- 0 S
0, EU Cs, B
U) 0.E U) 1-8 6
4 ji 111 2
0 0
5 10 15 Day of Month 20 25 I -
Permitted Limit DeltaT -C019 from ERFIS I
.-..*....~4*;.
- .",7 " ',.
.gW~lY.,w 4..
-sfl.(t..
- I,'
,'d4 Figure 2. River Water Temperature at Monitor Sites for February 2006 40-35 30 u-25 a20 El
~15
-10 5
0 r-ný A i
I I
0 5
10 15 Day of Month 20 25 BOPMO38 Monltor7 (upstrm) -
BOPM037 Monftor3 (dwnstrm)
K,
.2..
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 II April 2006 Carol Carpenter 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 2006
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 March 2006.
The simulated temperature increase to the Connecticut River for March 2006 is shown in Figtire 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 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 6.03" F on 12 March 2006 when the permitted limit was 13.4 *F. This occurred at a river flow of 2,958 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of March ranged from 2,958 cfs to 31,974 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 2006 is shown in Figure 2. The upstream measured River Station 7 temperatures ranged from 34.0 ¶F to 42.4 IF during March 2006. The downstream measured River Station 3 temperatures ranged from 34.3 OF to 51.3 OF during March 2006.
The permitted daily'discharge volume from the Station ranged from 314 million gallons per day(MGD) on March I", to 388 MGD on March 31,2006 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no service water or circulating water chlorination treatments during March 2006 (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 L A. 1) and are reported in Table 3.
Vysharedl*roectsr_,hem State FilesNPDESvooen*thly mports and cerificaton letter*MarNPDES discharge and thermal montUy report cover letter March 2006.doc
---Entergy 0 Page 2 There were no discharges of radioactive liquids during March 2006 (Table 4).
With the exception of March 12 and 29,2006, the Station's heating boilers were blown daily during March 2006. 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 March 2006, 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 March 2006 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.001 million gallons per day.
The monthly inspection. of the chemical containment berm was conducted on 27 March. 2006 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, ntergV Nuclear Vermont Yankee, LLC Lynn DeWald Samuel A. Wender IV Environmental Specialist Chemistry Superintendent montharydI)PqedChem Stat FdeSWPDES2O O
ot ard wicalm. Ietriar\\NPDES discharge and theotdal monthly report coer letter March 2=0.doc
7P6Entergy Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/ VT0000264 PERMINTTEE:
Entergv Nuclear Vermont Yankee, LLC MONTH/YEAR OF REPORT: March 2006 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 istrue, accurate and complete. I am aware that there are significant penalties for submitted false information, including the possibility of fine and imprisonment.
APPROVED BY:
Authorized Agent for the Permittee DATELŽ~2~4
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, 2006 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
314.65 2
323.22 3
314.66 4
315.10 5
316.16 6
316.15 7
316.16 8
317.29 9
322.96 10 322.98 11 322.98 12 322.95 13 322.97 14 331.74 15 331.70 16 322.93 17 322.93 18 322.92 19 331.69 20 331.68 21 331.70 22 322.94 23 322.96 24 322.95 25 322.96 26 322.96 27 329.51 28 329.51 29 322.97 30 322.98 31 388.46 (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, 2006 There were no circulating or service water treatments In March 2006 (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)
(mA Treatment (mg/I)
(mg/)
-treatment 12 23_
34_
45__________
56_________
67_
12 14 16 17 22 23 24 25 26 27 28 29 1
301 (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/Service Water Table 3. Daily Condenser Water pH Measurement March, 2006 (a)
(b)
(c)
Day pH pH..
.pH 1
7.30 2
7.30 7.30 3
7.30 7.30 4
7.30 7.30 5
7.40 7.30 6
7.40 7.50 7
7.30 8
7.30 7.30 9
7.30 7.30 10 7.40 7.30 11 7.40 7.40 12 7.40 7.40 13 7.40 7.30 14 7.40 7.30 15 7.30 7.40 16 7.20 7.30
- 17.
7.30 7.1.0 18
.7.30 7.30.
19 7.10 7.30 20 7.30 7.30 21 7.30 7.30 22 7.20 7.30 23 7.30 7.40 24 7.30 7.20 25 7.30 7.20 26 7.40 7.30 27 7.40 7.30 28 7.40 7.30 29
.7.30 7.20 30 7.40 7.40 31 7.40 7.40 (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 Table 4. Volume of Radioactive Liquid Discharged March, 2006 There were no radioactive liquid discharges in March, 2006' U
Entergy Nuclear-Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. BoilerBlowdown Discharge Flow Rate and Hydroquinone Concentration March, 2006 There were no blowdowns on the 12th or 29th Day.
Discharae Flow Rate (aal/dav)
Hvdroauinone (DDm) 1 18.0 1.425 2
18.0 1.075 3
18.0 1.300 4
18.0 1.125 5
18.0 1.275 6
18.0 1.200 7,
18.0 1.175 8
18.0 1.050 9
18.0 1.350 10 18.0 1.100 11 18.0 1.250 12 boiler secured 13 18.0 1.000 14 18.0 1.325 15 18.0 1.400 16 18.0 1.175 17 18.0 1.475 18 18.0 1.300 19 18.0 1.150 20 18.0 1.300 21 18.0 1.100 22 18.0 1.500 23 18.0 1.500 24 18.0 1.050 25 18.0.
1.000 26 18.0 11200 27 18.0 2.100 28 18.0 1.i675 29 boiler secured 30 18.0 0.925 31 18.0 1.150
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, 2006 (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 0.035 15 0.044 16 0.035 17 0.035 18 0.026 19 0.026 20 0.026
- 21.
0.026 22 0.017 23 0.017 24 0.017 25 0.017 26 0.017 27 0.017
-28 0.017 29 0.026 30 0.026 31 0.026 (a) Estimated value based on average river flow rate (cfs)
I
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 2006.
Backwash Backwash Backwash flow rate Total gallons (gpm) discharged Date Pump Start Pump Secured (MGD)
Time Time 03/09/2006 1045 1051 138 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for March 2006 14 12 10 X
0)
'Ck 8
6 4
2 0
0 5
10 15 20 25 30 Day of Month Permitted Limit DettaT
-- C019 from ERFIS
Figure 2. River Water Temperature at Monitor Sites for March 2006 80 70 60 1-50 40 30 0
1o 15 20 25 30 Day of Month BOPM038 Monftor7 (upstrm)-
BOPM037 Monitor3 (dwnstrm)]
vnVcn~,wr. ---. V.,.,r'.
Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 322 Governor Hunt Rd.
P.O. Box 157 tffbo~fVernon, VT 05354 Tel 802-257-7711 5 May 2006
/
Carol Carpenter Vermont Agency of Natural Resources Department of Evironmental 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 2006
Dear Carol,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NPDES) Permit issued to Entrgy Nuclear Vermont Yankee, LLC (VY), enclosed is the discharge and thermal compliance monitoring report for April 2006.
The simulated temperature increase to the Connecticut River for April 2006 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 floro 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 therma discharge remained below the NPDES permit limits throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 5.OT F on 3 April 2006 when the permitted limit was 13A *F. This occurred at a river flow of 3,677 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of April ranged from 3,677 cfs to 34,503 cfs.
The hourly average tem observed in the Connecticut River at the downstream monitoring Station 3 (red line) and the upstream monitoring Station 7 (black line) for April 2006 is shown in Figure 2. The upstream measured River Station 7 temperatures ranged from 39.3 'F to 49.6 IF during April 2006. The downstream measured River Station 3 temperatures ranged from 42.3 OF to 57.8 OF during April 2006.
The permitted daily discharge volume from the Station ranged from 336 million gallons per day (MGD) on April 11, to 489 MGD on April 20, 2006 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
There were no service water or circulating water chlorination treatments during April 2006 (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.
\\\\WVhared1WrojcChem State FilesWEMSO6M m reports and w rtica ttem r b ~pDES crnharge and them~al morthy report cover etter April 2006.doc
IL Entergy 0 Page2
/
There were no discharges of radioactive liquids during April 2006 (Fable 4).
The Station's heating boilers were blown down on several occasions during April 2006; on those days the boilers were secured; there was no boiler blowdown. In all instances the discharge flow was 1.0 gallons and the hydroquinone concentration was well below the permitted limit 15.0 ppm (Table 5).
The traveling screens and strainers were backwashed dailyduring April 2006, 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 (Fable 6).
The water treatment carbon filters were backwashed once during April 2006 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.001 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on 26 April 2006 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 Samuel A. Wender 1V Environmental Specialist Chemistry Superintendent
%'Ahajred1VPropC~ed xm State FiIPesWMSO06'VonthIy reports and certffcatori Ittei'~pMiPOES discharge and ttimMiI nmonffl reportcover Letter Apil 2006doc
0'0-&8 En teagW
~/
Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199 I VT0000264 3-1199 PERMITTEE Enter~rv Nuclear Vermont Yankee.. LLC Fntergv Nuclear Vermont Yankee LLC MONTHI/YEAR OF REPORT: April 2006 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:
Authoie Aent for the Pernnittee DATE,~~O)
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, 2006 (a)
Discharge Flow Rate (millions of aa!/dav)
Dav 1'
480.11 f
2 460.10 3
488.83 4
480.04 5,
_ 480.03 6
488.80 7
480.06 8
480.04 9
472.08 10 36327 11 336.07 12 336.08 13 480.12 14 488.88 15 480.12 16 480.10 17 488.86 18 480.10 19 480.12 20 488.90 21 480.10 22 488.82 23 480.05 24 480.05 25 453.60 26 488.89 27 488.87 28 480.09 29 480.09 30 480.09 (a) Estimated value based on gate position I
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
/
April, 2006 There Were No Oxidant Treatments During April 2006 (b)
Circulatina Water (b)
Service Water (a)pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant Durinig Oxidant Oxidant During Day (min)
(mg/I)
(mg/i)
Treatment (mg/I)
(mg/l)
Treatment 2
23________
4 5
5 6________
67_____
7 8____
10 13 16 21 22 23 24 25 26 27 28 29 30 (a) Tme 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/Service Water s/u Table 3. Daily Condenser Water pH Measurement April, 2006 (a)
(b)
(c)
Day pH PH pH 1
7.40 7.40 2
- --7;30 7.50 3
7.50 4
7.40 7.50 5
7.30 7.40 6
7.20 7.30 7
7.50 7.40 8
7.40 7.40 9
7.40 7.40 10 7.40 7.50 11 7.50 7.40 12 7.40 7.30 13 7.40 7.30 14 7.40 7.50 15 7.40 7.40 16 7.40 17 7.40 7.40 18 7.50 7.50 19 7.55 7.53 20 7.50 7.50 21 7.50 7.50 22 7.50 7.60 23 7.52 7.53 24 7.46 7.49 25 7.43 7.52 26 7.50 7.50 27 7.50 7.50 28 7.50 7.50 29 7.60 7.50 30 7.60 7.50 (a) Sample taken from discharge structure after bay (b) Sample taken from TBCCW sample sink - tci 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 April, 2006
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 April, 2006 Dlay Discharae Flow Rate (oaf/day)
Hvdroauinone (0Dmn) 1 18.0 1.300 2
18.0 1.400 3
18.0 1.875 4
18.0 1.250 5
Boiler Secured 6
18.0 1.250 7
18.0 1.275 8
18.0 1.100 9
18.0 1.125 10 Boiler Secured 11 18.0 1.175 12 Boiler Secured 13 Boiler Secured 14 Boiler Secured 15 Boiler Secured 16 Boiler Secured 17 18.0 1.250 18 Boiler Secured 19 Boiler Secured 20 Boiler Secured 21 Boiler Secured 22 18.0 1.425 23 18.0 1.250 24 18.0 1.300 25 18.0 1.325 26 Boiler Secured 27 18.0 1.425 28 Boiler Secured 29 Boiler Secured 30 18.0 1.500
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, 2006 (a)
Discharge Flow Rate (milions of nal/day)
Day 1
0.026 2
0.026 3
0.026 4
0.035 5
0.044 6
0.035 7
0.035 8
0.035 9
0.035 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 0.026 22 0.026 23 0.026 24 0.026 25 0.026 26 0.026 27 0.026 28 0.026 29 0.026 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 *ackwash.
Reporting Period: April 2006.
Backwash Backwash Backwash flow rate Total. gallons (gpm) discharged Date Pump Start Pump Secured (MGD)
Time I
Time
[
I 04/23/2006 2240 2247 135 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for April 2006 14 12 C
CL E
I-10 8
6 4
2 0
0 5
10 15 20 25 Day of Month x Permitted Limit DeltaT -C019 from ERFIS 30 m.
Figure 2. River Water Temperature at Monitor Sites for April 2006 90 80 70 60 C-50 40 30 0
5 10 15 20 25 Day of Month BOPM036 Monltor7 (upstrm) --
BOPM037 Monitor3 (dwnstrr) 30
Entergy Nuclear Northeast Entergy Nucl&an Operations, Inc.
Vermiont Yankee P.O. Bax 157 320 Governor Hunt Road Vernon, VT 05354
%NýEnteWTel 802 257 7711 2 June 2006 Carol Carpenter Vermont Agency of Natural Resources Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street-Sewing Building Waterbury, V#'40567 1-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC.Permit No. 3-1199 Subject-Monthly NPDES Discharge Monitoring Report for May 2006
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 May2006.
The simulated temperature increase to the Connecticut River for May 2006 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 mooitoring Station 7 and Vermont Yankee's operations temperature limits pet 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 3.57" F on 9 May 2006 when. the -permitted limit Was 13.4 *F..This occurred at a river flow of 5,367 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of May ranged from 5,008 efs to 57,280 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 2006 is shown in Figure 2. The
.upstream measured River Station 7 temperatures ranged from 49.0 0F to 60.9 'F during May 2006. The downstream measured River Station 3 temperatures ranged from 50.4 'F to 66.1 °Ftduring.May.2006. The permitted daily discharge volume from the Station: ranged from 453 million. gallons per day (MGD) on May 17, to 489 MGD on May 27, 2006 (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
%%Vyshared1Prcjects\\Chem State FilesMPDES\\ý2onthly. reports and oertification LetterAMay\\NPDES discharge and thermal
-monthly report cover letter May 2006.doc I
0 Page 2
/
There was one senrice water chlorination treatment during May 2006 (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) and are reported in Table 3.
There were no discharges of radioactive liquids during May 2006 (Table 4).
The Station's heating boilers were blown down on several occasions during May 2006; on those days the
.boilers were secured, there was no boiler blowdown. 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).
Thetraveling screens and strainers were backwashed daily during May 2006, 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 May 2006 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.001 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on 24 May 2006 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
'Envirornental Specialist Chemistry Superintendent I\\Vysharedl°rojects*Chem State FilesWNPDESO006Nmonthly reports and certification letterWtayNPDES discharge and thermal monthly report cover letter May 2006.doc U
/
Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, VernonVermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/VTO000264-PERMITTEE:
Enterev Nuclear Vermont Yankee. LLC MONTH/YEAR OF REPORT: May 2006 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 rized Agent for the Permittee DATE*ý 5"A-.,,ý,
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Serice Water Table 1. Volume of Water Discharged to River May, 2006 (a)
Discharge Flow Rate.
(millions of gallday)
Day 1
488.87 2
480.09 3
484.48 4
488.90 5
488.90 6
480.09 7
480.09 8
480.10 9
488.87 10 480.09 11 488.87 12 480.09 13 480.08 14 480.07 15 477.50 16 475.77 17 452.66 18 456.94 19 480.09 20 480.09 21 476.59 22 475.84 23 488.85 24 477.01 25 479.68 26 480.13 27 488.91 28 480.12 29 480.13 30 476.20 31 484.50 (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, 2006 (b)
Circulating Water (b)
Service Water (a) pH pH Treatment Free Total Measured Free Total Measured Duration Oxidant Oxidant Du*rtg Oxidant Oxidant During Day (min)
(mg/I)
(mg/I)
Treatment (mg/I)
(moll)
Treatment 21 3
4 5
7 9
10 11 1 2 13 14 15 16 17 18 19
,20
-21 22 23 24 25 20 0.05 0.11 7.4 26 27 28 29 30 431_ _ _ ______
(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/Service Water Table 3. Daily.
- May, Condenser Water pH Measurement 2006 (a)
(b)
(c)
Day pH pH pH 1
7.40 7.40 2
- 7.40 7.50-3 7.50 7.50
- 4 7.40 7.50 5
7.40 7.50
- 6.
7.50 7.50 7.50 7
7.40
- 7.50 8
7.40 7.50 9
7.70 7.40 7.60 10 7.50 7.50 11 7.40 7.50 12 7.50
-7.50 13 7.30 7.40 14 7.40 7.40
.15 7.20 7.30 16 7.20 7.30 17 7.20 7.30 18 7.20 7.20 19 7.20 7.30 20
-7.30 7.40 21 7.30 7.30 22 7.40 7.40 23 7.30 7.40 24 7.30 7.40 25 7.40 26 7.30 7.30 27 7.30 7.30 28 7.30 7.40 29 30 7.30 7-30 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. Vermort Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids
/
)
Table 4. Volume of Radioactive Liquid Discharged May, 2006 There were no radioactive liquid discharges in May, 2006
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Btowdown Discharge Flow Rate and Hydroquinone Concentration May, 2006 Day.
Discharge Flow Rate (gal/day)
Hydroquinone"(ppm) 1 18.0
.1.525 2
.18.0 1.475 3
4
.5
.6_
7 8
9 10 11 12 13 14 18.0 1.200 15.__
16 18.0 1.025
.17 18.0 1.075 18 19 20 2.1 18.0 1.275 22 18.0 1.100 23 2418.0 1.050 25 26 27 28 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, 2006 (a)
Discharge Flow Rate (millions of.gal/day)
Day 1
-0...._o.017 2
0.01.7 3
0.026 4
0.026-.
5 0.026' 6
0.017 7
-,0.017
- 8.
.0 0017 9
0.017 10 0.017 11 0.017 12 0.017 13 0.026 14 0.044 15 0.044 16 0.044 17 0.044 18 0.044 19 0.044 20 0.044 21 0.044 22 0.044 23 0.044 24 0.044 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) i
Entergy Nuclear Vermont Yankee. LLC Permit No. 3-1199, NPDES No. VT0000264 Table 7. Discharge No. 004, Water Treatment Carbon Filter ackwash.
Reporting Period: May 2006.
Backwash Backwash Backw..ah flow rate Total jailons (gpm) discharged Date Pump Start Pump Secured (MGD)
Time Time 05/22/2006 9501 956 140 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for May 2006 14 12 10 ir~
S CEU 4'I-8 6
4 2
0 0
5 10 15 20 Day of Month SPermitted Limit DeltaT C019 from ERFIS 25 30
Figure 2. River Water Temperature at Monitor Sites for May 2006 701 p'*! !
<a~ ~ ~ ~ ~~~~7
\\
0, 240 130 0
0 5
10 15 Day of Month 20 25 30 BOPM036 Monitor7 (upstrm)...
BOPM037 Monitor3 (dwnstrm)j
Entergy Nuclear Northeast Entergy Nuclear Operations. Inc.
Vermont Yankee P.O. Box 157 320 Governor Hunt Road
. E n te Vernon. VT 05354 Tel 802 257 7711 12 July 2006 Carol Carpenter 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 2006
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 June 2006.
The simulated temperature increase to the Connecticut River for June 2006 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 upstreamn 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 2.58" F on 25 June 2006 when the permitted limit was 3.0 *F. This occurred at a river flow of 7,100 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Darn for the month of June ranged from 7,100 c fs to 53,737 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 2006 is shown in Figure 2. The upstream measured River Station 7 temperatures ranged from 55.70 'F to 67.7 'F during June 2006. The downstream measured River Station 3 temperatures ranged from 57.1 'F to 72.2 'F during June 2006. The pennitted daily discharge volume fiom the Station ranged firom 408 million gallons per day (MGD) on June 13, to 489 MGD on June 5, 2006 (Table I). The permitted daily discharge of 543 MOD was never exceeded.
\\\\Vyshared'Projects\\Chem State Files\\NPDESM'06Vnonthly reports and certifr-ation letter*Jun\\WNPOES discharge and thermal monthly report cover letterJune 2006.doc
0 Page 2 There were five service water chlorination treatments and two circulating water chlorination treatments during June 2006 (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) and are reported in Table 3.
There were no discharges of radioactive liquids during June 2006 (Table 4).
The Station's beating boilers were not blown down during June 2006 as the boilers were secured throughout the month (Table 5).
The traveling screens and strainers were backwashed daily during June 2006, 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 June 2006 (Table 7). The discharge volume was approximately 0.001 million gallons, well below the permitted limit of 0.001 million gallons per day.
The monthly inspection of the chemical containment berm was conducted on 24 June 2006 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
\\\\Vyshared1lProjects\\Chern State Files\\NPDESt2006tmnonthly reports and oedfrfation letter\\Jun\\NPDES discharge and thermal monthly report cover letterJune 2006.doc
Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/
VT0000264 PERMITT "EE:
Enter*,v Nuclear Vermont Yankee. LLC E:
Entercrv Nuclear Vermont Yankee LLC MONTH/YEAR OF REPORT: June 2006 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:
Author ed Agent lbr the Permnittee DATE__,*
, 2 r
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 June, 2006 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
484.52 2
484.48 3
484.47 4
484.47 5
488.88 6
486.37 7
484.47 8
488.84 9
484.47 10 484.46 11 484.46 12 484.49 13 408.17 14 488.87 15 484.49 16 484.49 17 484.48 18 484.49 19 484.50 20 484.49 21 484.49 22 488.86 23 484.50 24 484.47 25 426.95 26 484.47 27 484.50 28 484.47 29 484.48 30 488.85 (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 June, 2006 (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
6 20 0.11 0.05 7.5 7
8 20 0.05 0.11 0.0 9
10 11 12 13 75 0.05 0.36 7.7 0.05 0.29 7.8_
14 15 16 17 18
~19 20 21 22 20 0.05 0.45 7.4 23 24 25 60 0.05 0.22 8.1 0.05 0.25 8.1 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
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling Water/Service Water Table 3. Daily Condenser Water pH June, 2006 Measurement (a)
(b)
(c)
Day pH pH pH 1
7.30 7.30 2
7.30 7.30 3
7.36 7.39 4
7.32 7.35 5
7.31 7.38 6
7.46 7.41 7.40 7
7.30 7.30 8
7.40 7.50 9
7.40 7.50 10 7.40 7.40 11 7.50 7.50 12 7.30 7.40 13 7.30 7.30 14 7.30 7.30 15 7.30 7.30 16 7.30 7.30 17 7.30 7.30 18 7.20 7.30 19 7.20 7.30 20 7.20 7.20 21 7.37 7.38 22 7.42 7.41 23 7.33 7.34 24 7.30 7.30 25 7.30 7.20 26 7.30 7.30 27 7.30 7.30 28 7.30 7.30 29 7.30 7.30 30 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. V-1`0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged June, 2006 There were no radioactive liquid discharges in June, 2006
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 June, 2006 Day Discharge Flow Rate (gaVday)
Hydroquinone (ppm) 1 boiler secured 0.000 2
boiler secured 0.000 3
boiler secured 0.000 4
boiler secured 0.000 5
boiler secured 0.000 6
boiler secured 0.000 7
boiler secured 0.000 8
boiler secured 0.000 9
boiler secured 0.000 10 boiler secured 0.000 11 boiler secured 0.000 12 boiler secured 0.000 13 boiler secured 0.000 14 boiler secured 0.000 1_
boiler secured 0.000 16 boiler secured 0.000 17 boiler secured 0.000 18 boiler secured 0.000 19 boiler secured 0.000 20 boiler secured 0.000 21 boiler secured 0.000 22 boiler secured 0.000 23 boiler secured 0.000 24 boiler secured 0.000 25 boiler secured 0.000 26 boiler secured 0.000 27 boiler secured 0.000 28 boiler secured 0.000 29 boiler secured 0.000 30 boiler secured 0.000
Entergy Nuclear Northeast, Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and June, 2006 Traveling Screen Backwash (a)
Discharge Flow Rate (millions of qal/day)
Day 1
0.026 2
0.026 3
0.026 4
0.035 5
0.035 6
0.026 7
0.026 8
0.035 9
0.035 10 0.035 11 0.044 12 0.044 13 0.044 14 0.044 15 0.035 16 0.026 17 0.026 18 0.026 19 0.026 20 0.026 21 0.026 22 0.026 23 0.026 24 0.026 25 0.026 26 0.026 27 0.035 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: May 2006.
Backwash Backwash Backwash flow rate Total gallons (gpm) discharged Date Pump Start Pump Secured (MGD)
ITiTime -
Time I
I
_I 06/17/2006 1314 1322 141 0.001
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for June 2006 141 1 2....
U.,
E
- 4.
KU 2
0 5
10 15 20 25 30 Day of Monith S"Permitted Limit DeltaT
-C019 from ERF17S
Figure 2. River Water Temperature at Monitor Sites for June 2006 75
-i 70 o65 E 0 Pt
-~v-'
~'-~
55 50 0
5' 10 15 Day of Month 20 25 30 BOPM036 Monitor7 (upstrm)
BOPM037 Monitor3(dwnstrm)j
EL gy Nuclear Northeast O
tions, Inc.
VeVnrt Yankee P.O. BSx 157 E
ater g
Mn320 Governor HPnt Road WamrbeyVernon, VT 05354 Tel OW) 257 7711 I1I August 2006 Carol Carpenter Vermont Agency of Natural Reso NuEts Department of Environmental Conservation Wastewater Management Division, Permits and Compliance Section 103 South Main Street - Sewing Building Waterbury, WT 05671-0405
Reference:
NPDES Permit No. VT 0000264, VT DEC Permit No. 3-1199
Subject:
Monthly NPDES Discharge Monitoring Report for July 2006
Dear Carol,
As required in Section D.2. in the National Pollutant Discharge Elimination System (NP)DES) Permit issued to Entergy Nuclear Vermont Yankee, LLW (VY), enclosed is the discharge and thermal compliance monitoring report for July 2006.
The simulated temperature increase to the Connecticut River for July 2006 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 limit throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 2.91" F on 28 July 2006 when the permitted limit was 3.0 OF. This occurrmd at a river flow of 4,647 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of July ranged from 2,735 cfs to 39,540 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 2006 is shown in Figure 2. The upstream measured River Station 7 temperatures ranged from 63.8 TF to 74.7 `F during July 2006. The downstream measured River Station 3 temperatures ranged from 66.3 OF to 813 -F during July 2006. The permitted daily discharge volume from the Station ranged from 422 million gallons per day (MGD) on July 20, to 489 MGD on July 3, 2006 (fable 1). The permitted daily discharge of 543 MGD was never exceeded.
\\WysharedlIprjechts tatFCeW POES20tonfthl reports and certification ietteJuIMNPDES discharge and thefmal mortly report cover IeterJuly 2006.doc
~Enter~gy
("
Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt Road, Vernon Vermont CERTIFICATION STATEMENT PERMITNUMBER:
3-1199
/_-VT0000264 PERMITTEE:
Q Entercv Nuclear Vermont Yankee. ILLC MONTH/YEAR OF REPORT: July 2006 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: )
t-
/?/- Eký Atorized Agent for th ermittee DATE___*_ *
'. ergy 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, 2006 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
484.47 2
484.48 3
488.87
,,._4 484.48 5
488.84 6
484.45 7
488.84 8
480.08 9
423.77 10 484.46 11 484.46 12 484.45 13 488.84 14 484.47 15 484.46 16 484.47 17 484.47 18 488.85 19 488.84 20 421.53 21 483.89 22 484.42 23 484.43 24 488.81 25 488.83 26 488.83 27 484.45 28 484.44 29 484.46 30 467.24 31 484.43 (a) Estimated value based on gate position
(
I C
Entergy Nuclear Vermont Yankee Permit 3-1199, NPDES VToo00264 Discharge No. 001, Condenser Cooling Water/Service Water Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems July, 2006 (b)
Circulatina Water (b)
Service Water Treatment re oi Mesr Fre Tta etkd Duration
=-danrt Qifdant O0uiinq Oxwirifn O(dant u
,g Day (fmd) 010 I reto e 6
Tretmen 8
6
-9
-61
- 045, 76:4
-- b5-0S:
~.4
-L4
_10
-12 13 15 0___
.5.11
'74 14 18 15 060 03.17 20
-60 0.05:
00377
.0 22
-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
.I
(..
Entergy Nuclear Vermont Yankee Permit 3-1199, NPDES No. VT0000264 Discharge No. 001, Condenser Cooling/Service Water Table 3. Daily Condenser Water pH Measurement July, 2006 (8)
(b)
Day pH PH pH 1
7.30 7.30 2
7.40 7.40 3
7.40 7.40 4
7.30 7.40 5
7.40 7.40 6
7.50 7.40 7
7.60 8
7.40 7.50 9
7.50 7.40 10 7.50 7.50 11 7.50 7.50 12 7.50 7.50 13 7.30 7.30 14 7.30 7.30 15 7.36 7.37 16 7.35 7.38 17 7.30 7.30 18 7.60 7.20 7.30 19 7.60 20 8.10 21 7.60 7.60 22 7.50 7.40 23 7.40 7.30 24 7.50 25 7.50 9.30 26 7.40 7.40 27 7.90 28 7.40 7.30 29 7.40 7.40 30 7.40 7.50 31 7.70 (a) Sample taken from discharge structure after bay (b) Sample taken from TB sample sink - drc water stream (c) Sample taken from TB sample sink-service water stream
Entergy Nuclear Vermont Yankee Permit 3-1199 NPDES No. VT0000264 Discharge No. 002, Radioactive Liquids Table 4. Volume of Radioactive Liquid Discharged July, 2006 There were no radioactive liquid discharges in July, 2006
C:
Entergy Nuclear Vermont Yankee Permit3-1199 NPDES No. VT0000264 Discharge No. 003, Plant Heating Boiler Blowdown Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration July, 20,06 DMv fli~harae Flow Rate (aalIdav~
Hvdroouinone (Dom' I.
no dis-harge boiler sel/cud*
if r
2 no discharge, boilers secured 3
no discharge, boilers secured 4
no discharge, boilers secured 5
no discharge, boilers secured 6
no discharge, boilers secured 7
no discharge, boilers secured 8
no discharge, boilers secured 9
no discharge, boilers secured 10 no discharge, boilers secured 11 no discharge, boilers secured 12 no discharge, boilers secured 13 no discharge, boilers secured 14 no discharge, boilers secured 15 no discharge, boilers secured 16 no discharge, boilers secured 17 no discharge, boilers secured 18 no discharge, boilers secured 19 no discharge, boilers secured 20 no discharge, boilers secured 21 no discharge, boilers secured 22 no discharge, boilers secured 23 no discharge. boilers secured 24 no discharge, boilers secured 25 no discharge, boilers secured 26 no discharge, boilers secured 27 no discharge, boilers secured 28 no discharge, boilers secured 29 no discharge, boilers secured
- 30.
no discharge, boilers secured 31 no discharge, boilers secured
t
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Entergy Nuclear Vermont Yankee Permit 3-1199 NPDES No. VT0000264 Discharge No. 009, Strainer and Traveling Screen Backwash Table 6. Strainer and Traveling Screen Backwash July, 2006 (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
0.017 9
0.017 10 0.017 11 0.017 12 0.017 13 0.035 14 0.035 15 0.026 16 0.026 17 0.026
- 18.
0.026 19 0.026 20 0.017 21 0.017 22 0.017 23 0.035 24 0.026 25 0.026 26 0.017 27 0.017 28 0.017 29 0.017 30 0.026 31 0.017 (a) Estimated value based on average river flow rate (cfs)
(
C 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 2006.
Backwash Backwash Backwash flow rate Total gallons (gpm) discharged Date Pump Start Pump Secured (MGD) 4 Time Time I
I 07/17t2n 2250 230A 145
.007
Figurel. River Water Temperature Change (Delta T) due to Plant Dlscharge for July 2006 14-12 E,
S!
10 8
6 4
2 0
0 5
10 15 20 25 30 Day of Month Permitted Limit DeftaT Cal 9 from ERFIS
Figure 2. River Water Temperature at Monitor Sites for July 2006 85 80 S75 E 70 65 60 0
5 10 15 20 Day of Month BOPM036 MonWtor7 (upstrm) -
BOPM037 Monitor3 (dwnstrm) 25 30
.. ergy Nuclear Operations, Inc.
320 Governor Hunt Road EntergyVernon.
Vr 05354 I 1 September 2006 Carol Carpenter Vermont Agency of Natural Resoutres 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 2006
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 August 2006.
The simulated temperature increase to the Connecticut River for August 2006 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 fivw-minute tempeatureobserved 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 limit throughout the month.
The highest simulated (calculated) hourly average temperature increase for the month was 2.94" F on 15 August 2006 when the permitted limit was 3.0 IF. This occurred at a river flow of"3,168 cubic feet per second (cfs). The hourly average Connecticut River flows as recorded at Vernon Dam for the month of August ranged from 1,318 cfsto 23,041 cfi.
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 2006 is shown in Figure 2. The upstream measured River Station 7 temperatures ranged from 66.8 9F to 76.0 OF during August 2006. The downstream measured River Station 3 temperatures ranged from 69.2 *F to 81.0 'F during August 2006.
The permitted daily discharge volume from the Station ranged from 304 million gallons per day (MGD) on August 16%, to 489 MGD on several occasions during the month (Table 1). The permitted daily discharge of 543 MGD was never exceeded.
yhwaediwcChrStateFkeVPDES20Q6ýmn ly repods and eitifica0ton ettMeAugNPDES discharge and thermal monthly report cover letter August 2006.doc
- Entergy 0 Page 2 There were nine service water chlorination treatments and four circulating water chlorination treatments during August 2006 (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 k, A. I) and are reported in Table 3.
There were no discharges of radioactive liquids during August 2006 (Table 4).
The Station's heating boilers were not blown down during August 2006 as the boilers were secured throughout the month (Table 5).
The traveling screens and strainers were backwashed daily during August 2006, the backwash volume ranged from approximately 0.017 to 0.026 million gallons per day, the permitted limit of 0.050 miffion gallons per day was not exceeded (Table 6).
The water treatment carton filters were not backwashed during August 2006 (Table 7).
The monthly inspection of the chemical containment berm was conducted on August 23, 2006 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, EntergyNuclear Vermont Yankee, LW Lynn DeWald Sa/
A Environmental Specialist Chemistry Superintendent
\\\\Vyshandl~jecCh StateFiNPDES*206Vnonthly reports and met'ation etteAAugNPDES dIscharge and thermal mothly repod cover letterAugust 2006.doc
- -Entergy
(
C".
Entergy Nuclear Vermont Yankee, LLC Entergy Nuclear Vermont Yankee, LLC 322 Governor Hunt'Road, Vernon Vermont CERTIFICATION STATEMENT PERMIT NUMBER:
3-1199
/ VTOO00264 3-1199 PERMvITTEE:
Enter~v Nuclear Vermont Yankee. LLC MONTH/YEAR OF REPORT: August 2006 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:
iL4 Aulorzed Agent fo e PermitteeP DATE I I 'ý
ý4
C..
Table 1. Volume of Water Discharged to River August, 2006 (a)
Discharge Flow Rate (nillions of gal/day)
Day 1
400 2
489 3
407 4
489 5
422 6
489 7
489 8
489 9
489 10 454 11 415 12 481 13 422 14 458 15 445 16 304 17 380 18 344 19 327 20 470 21 484 22 484 23 489 24 489 25 478 26 316 27 348 28 376 29 489 30 489 31 489 (a) Estimated value based on gate position
C Table 2. pH and Oxidant Levels During Treatment of Circulating and Service Water Systems August, 2006 (b)
(b)
Circulatina Water_
Servioe Water
-iclan t-r-
_vceWae (a) pH (a) p1H" Treatment Free Total Measured reatment Free Total Measured Q
Chlorine Oxidant During Du¢*o Chlorine Oxidant During
-Day._
),.
(m )
Treabi i1nf (mg/)
a Treatmeni A 0.05,
2........
0 3......
0
,.11
- 7...
4 14 12
-. 13.
00;
-0
~ ' o l8
...1..
"1....
1 4
- 17
-1 8.........
.19.....
-20 2 2 23
_1 2 64_
__-27 90 i; 05
,,.1.
0
,40-54 6;2.I 2 8 29_0
... 30 31 A l;........3
.. <0..0 i
-<0 1 (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
l C..
Table 3. Daily Condenser Water pH Measurement August, 2006 (a)
(b)
(C)
Day pH pH pH 1
7.60 7.60 2
7.70 7.50 3
7.70 7.70 4
7.50 7.50 5
8.00 6
7.40 7.30 7
7.50 7.40 8
7.40 7.50 9
7.30 7.30 10 7.80
_,,,=,
_=
11 7.90 12 7.50 7.40 13 7.40 7.40 14 7.50 7.40 15 7.40 7.50 16 8.10 17 8.10 8.10 18 8.10 8.10 19 6.10 20 8.10 21 7.60 22 7.54 7.49 23 7.60 7.50 24 7.50 7.40 25 8.00 26 8.20 27 8.20 8.20 28 7.40 7.40 29 7.40 7.30 30 7.90 31 8.10
=__,,
(a) Sample taken from discharge structure after bay (b) Sample taken from turbine building clean sample sink -circ water stream (c) Sample taken from turbine building clean sample sink -service water stream
Table 4. Volume of Radioactive Liquid Discharged August, 2006 There were no radioactive liquid discharges in August, 2006
C Table 5. Boiler Blowdown Discharge Flow Rate and Hydroquinone Concentration August, 2006 Day Discharge Flow Rate (gaaldav)
Hvdrooulnone (oom)
I no discharge, boiler secured 2
no discharge, boiler secured 3
no discharge, boiler secured 4
no discharge, boiler secured 5
no discharge, boiler secured 6
no discharge, boiler secured 7
no discharge, boiler secured 8
no discharge, boiler secured 9
no discharge, boiler secured 10 no discharge boier secured 11 no discharge, Wboier secured 12 no discharge, boiler secured 13 no discharge, boiler secured 14 no discharge, boiler secured 15 no discharge, boder secured 15 no discharge, boiler secured 17 no discharge, boiler secured 18 no discharge, boiler secured 19 no discharge, boiler secured 20 no discharge, boiler secured 221 no discharge, boiler secured 22 no discharge, boiler secured 23 no discharge, boiler secured 24 no discharge, boiler secured 25 no discharge, boiler secured 26 no discharge, boiler secured 27 no discharge, boiler secured 28 no discharge, boiler secured 29 no discharge, boiler secured 30 no discharge, boiler secured 31 no discharge, boiler secured
C.
Table 6. Strainer and Traveling Screen Backwash August, 2006 (a)
Discharge Flow Rate (millions of gal/day)
Day 1
0.017 2
0.017 3
0.026 4
0.026 5
0.035 6
0.026 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 0.026 23 0.026 24 0.026 25 0.017 26 0.017 27 0.017 28 0.017 29 0.017 30 0.017 31 0.01 (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 2006.
There were no backwashes during August 2006 Backwash Backwash Backwash flow rate Total gallons (gpm) discharged Date Pump Start Pump Secured (MGD)
T
.Tim e -
Figurel. River Water Temperature Change (Delta T) due to Plant Discharge for August 2006 141 12 10 C
C"
.0 C
LU E
0!
8 4
2 IIVI IJ j, -
I -
-'ý
".-1 11 0 1.
0 5
10 15 20 25 30 Day of Month JCý:
Permitted Limit DettaT -
C019 from ERFIS
Figure 2. River Water Temperature at Monitor Sites for August 2006 0
b.9 CL E
12 85 83 81 79 77 75 73 71 69 67 65 0
5 10 15 20 Day of Month BOPM036 Monitor7 (upstrm) -
SOPM037 Monitor3 (dwnstrm) 25 30