DCL-2011-512, 2010 Annual Report on Discharge Monitoring
| ML16049A365 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 02/28/2011 |
| From: | Welsch J Pacific Gas & Electric Co |
| To: | Office of Nuclear Reactor Regulation, State of CA, Central Coast Regional Water Quality Control Bd |
| Shared Package | |
| ML16048A230 | List:
|
| References | |
| CAC MF4019, CAC MF4020, DCL-15-142, DCL-2011-512 | |
| Download: ML16049A365 (110) | |
Text
SWR-08 Pacific Gas and E~lectric Company Diabl0 Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424 805/545-6000 PG&E Letter DCL-201 1-512 I. Electronic CIWQS WebSubmission Application February 28, 2011
'*California Regional Central Coast RegionWater Quality Control Board Attn: Monitoring and Reporting Review Section 895 Aerovista, Suite #101 San Luis Obispo, CA 93401-7906
Dear Mr. Briggs:
In accordance with Order 90-09, NPDES No. CA0003751, the 2010 Annual Report on Discharge Monitoring at Diablo Canyon Power Plant is provided. This letter and accompanying annual data summary tables and plots are attached to the ClWQS application submittal.
Facility Name: Diablo Canyon Power Plant Address: P.O. Box 56 Avila Beach, CA 93424 Contact Person: Bryan K. Cunningham Job
Title:
Supervisor, Environmental Operations Phone Number: (805) 545-4439 WDR/NPDES Order Number: Order No. 90-09, NPDES No. CA0003751 Type of Report: (check one)
QUARTERLY ANNUAL
[] ii Quarter: (check one): 1 st 2nd 3 rd 4 th 0] 0] 0] 0]
Year: 2010 (Annual Reports for DCPP are Jan-Dec)
Violation(s) (Place an X by the appropriate choice):
El No (there are no violations to report) ~[] Yes e
cOpY
PG&E Letter DCL-201 1-512 Mr. Briggs February 28, 2011 Page 2 if Yes is marked (complete a-g):
a) Parameter(s) in Violation:
Grease and Oil (G&O) Daily Maximum Limit Exceedance of 50.0% April, 29 2010.
b) Section(s) of WDR/NPDES Violated:
NPDES No. CA0003751 Order 90-09 Section B. Effluent Limitations, Subsection 2.
Discharge 001 D Constituents - Grease and Oil -
Units mg/I - Daily Maximum 20.
c) Reported Value(s)
G&O Daily Maximum for April 29, 2010 Discharge O01D = 30 mg/I.
d) WDR/NPDES Limit/Condition:
G&O Daily Maximum Limit Order 90-09 Discharge O01D =20 mg/I.
e) Dates of Violation(s)
(reference page of report/data April 29, 2010.
sheet): Note: Daily maximum values for 001D G&O are not reflected in Annual Report Tables or Charts.
f) Explanation of Cause(s): (If "YES", see overview section of attached report)
(attach additional information as *Reference Annual Report Overview Section, needed) Subsection 4. Review of Compliance Record and Corrective Actions, Item c.
g) Corrective Action(s): (If "YES", see overview section of attached report)
(attach additional information as Reference Annual Report Overview Section, needed) Subsection 4. Review of Compliance Record and Corrective Actions, Item c.
PG&E Letter DCL-201 1-512 Mr. Briggs February 28, 2011 Page 3 I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage'the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. The results of the influent and effluent monitoring presented are the observed results of the measurements and analyses required by the monitoring program, and is neither an assertion of the adequacy of any instrument reading or analytical result, nor an endorsement of the appropriateness of any analytical or measurement procedure. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
If you have any questions or concerns, or require additional information, please contact Bryan Cunningham at (805) 545-4439.
Sincerely, 4~g. e~ajo Name: James M. Welsch C
Title:
Station Director- Diablo =Canyon Power Plant 201 151 2/lk/bkc
PG&E Letter DCL-2011-512 Mr. Briggs February 28, 2011 Page 4 cc: PDF Formatted Copy of CIWQS Application Submittal:
Regional Administrator U.S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 Hardcopy Print-Out of CIWQS Application Submittal:
U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-0001 Michael S. Peck Senior Resident Inspec1tor U.S. Nuclear. Regulatory Commission Diablo Canyon Power Plant 104/5
CIWQS Web Application Submittal Print Out and Attached Supporting Documents eSMR PDF Report Summary: Annual SMR ( MONNPDES ) report for 2010 Summary: Annual SMR ( MONNPDES ) report for 2010 submitted by Brad Hinds(Chemistiy and Environmental Operation Manager) on 02/28/2011.
Facility Name: PG&E DIABLO CANYON POWER PLANT Order Number: R3-1990-0009 Waterboard Office: Region 3 - Central Coast Case Worker: Peter von Langen, John Biegel Report Effective Dates: 01/01/2010 - 12/31/2010 No Discharge Periods azn*, [
utaDlO M-UUI I- .4 .4 Djiablo M-t0l lD
- I- -I .1 Diablo M-Ut01F Diablo M-O01G Diablo M-001H Diablo M-001I 01/01/2010 - 12/31/2010 Diablo M-0O1J Diablo M--OIK 01/01/2010- 12/31/2010 Diablo M-001L Diablo M-001M Diablo M-001N Diablo M-001P Diablo M-002 Diablo M-003 Diablo M-004 Diablo M-005 Diablo M-008 Diablo M-009 Diablo M-013 Diablo M-01 S Diablo M-016 I}1/01/2010 - 12/31/2010.......
Diablo M-017 __________________01/01/2010- 12/31/2010 Diablo M-INF Self-Determined Violations
. ~oiatlon~, a' ~cr ~eAc o 53~Q.&irt~uce DII..
'.31* CII) ', JIG~l*V JJ*,II and reported value was 30.0 mg/L.. IlUiiI IV*GAUIIUlIII IC £U.U lIIl* -. Keterence Annual Keport Overview Section, Subsection 4. Review of Compliance Record and Corrective Actions, Item
- c. (Attachment I).
Procedural data sheets and associated review processes implemented prior to authorizing a tank wastewater release have been enhanced to prevent a discharge through pathway 0010 if constituent parameters are not in specification with NPDES permit limitations.
Attachments Ittachment 1 - 201 Annual Report Overview Section.pdf 2010 Annual Summary Report on Discharge 02/2812011 l ]~~Monitoring at Diablo Canyon Power Plant ..
Attachment 2 - 2010 Annual Rpt Appendix-I NPDES Discharge DCPP NPDES Discharge Points Table 02/28/2011 Points.pdf ______________________________
Attachment 3 -201'0 Annual Rpt Appendix-2 Tabular Summaries T'abular Summaries of Influent and Effluent 02/28/2011 of Monitornng.pdf Monitoring ___________
Attachment 4 - 2010 Annual Rpt Appendix-3 Graphical Graphical Summaries of Influent and Effluent 02/28/2011 iSummaries of Monitoring.pdfl Monitoring___________
Attachment 5 - 2010 Annual Rpt Appendix-A Summary of Summary of Receiving Water Monitoring 02128/2011 RWMP Monitoring.pdf Program (RWMP) Activities ___________
Cover Letter (Uploaded File)
POE DCL201 1512 2010 Annual[ 2011-02-28 10:03:58.0 1205299 bytes Diichar e Monitoring Report.pal Data Summary Analytical Results No Analytical Data Measurements Available / Reported Calculated Values No Calculated Data Measurements Available / Reported Certificate All analyses were conducted at a laboratory certified by the State Water Resources Control Board or approved by the executive officer and in accordance with current EPA guideline procedures or as specified in the monitoring program. I certify under penalty of law that all data submitted, including attachments, were prepared under my direction in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of a fine or imprisonment, for knowing violations. I certify that I am Brad Hinds and am authorized to submit this report on behalf of PG&E DIABLO CANYON POWER PLANT. I understand that I am submitting a Annual SMR ( MONNPDES ) report for 2910 and I understand that data submitted in'this report can be used by authorized agencies for water quality management related analyses and enforcement actions, if required. Entry of my name and title below indicate my certification of this report and my understanding of the above conditions.
Name: Brad Hinds
Title:
Chemistry and Environmental Operation Manager
ANNUAL
SUMMARY
REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2010
PG&E Letter No. DCL-2011-512 2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS P)AGE OVERVIEW 1
SUMMARY
OF MONITORING PROGRAM 1 A. Monitoring of Plant Influent and Effluent 1 1'. Monitoring Data
- 2. Facility Operating and Maintenance Manual
- 3. Laboratories Used to Monitor Compliance 2
- 4. Review of Compliance Record and Corrective Actions 2 B. Monitoring of Receiving Water 4
- 1. Ecological Studies at Diablo Canyon 4
- 2. In-Situ Bioassay 4
C. Sodium Bromide Treatment Program APPENDICES Appendix 1 - NPDES Discharge Points Appendix 2 - Tabular Summaries of Influent and Effluent Monitoring Appendix 3 - Graphical Summaries of Influent and Effluent Monitoring Appendix 4 - Summary of RWMP Monitoring for 2010
2010 Annual Summary Report on Discharge Monitoring at the**
Diablo Canyon Power Plant OVERVIEW This annual summary report follows the format used in quarterly monitoring reports. Analytical results below the respective analytical detection limit (ND or non-detect) are plotted as a "zero" value in accordance with ELAP guidance. Results between the analytical detection limit and reporting (quantitation) limits are plotted at the value and shown as 'DNQ' in the' tabular summaries as is done for ClWQS reports. Less-than results are typically reported to express an average of values that include non-detects and at least one positive result. These less-than results are plotted conservatively at the value. During 2010, discharges occurred from all discharge paths except 0011I, 001K, 016, and 017.
B. California Ocean Plan Table B substances that were not analyzed for have not been added to the discharge stream. The substances listed in Table B in the California Ocean Plan were each analyzed for and reported in the permit renewal application for Diablo Canyon Power Plant (DCPP) submitted in October 1994 and January 2001. There have been no changes in activities conducted at the plant that would have significantly affected the results previously reported in the above referenced documents.
SUMMARY
OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent
- 1. Monitoring Data
- a. Appendix 1 provides a list of discharge path names for ease of reference. Appendix 2 contains monitoring data in tabular form. Reporting formats for the 1 st quarter 2010 have been revised to reflect conventions required for the CIWQS Application eSMR. Appendix 3 contains monitoring data in graphical form.
- b. Annual oil and grease analyses were performed in October on Stormwate'rlYard Drain Discharges 005, 008, 009, 013, and 015. Results were non-detect (less than 5 mg/I) for all five of these discharge points. No discharges~that resulted in adequate sample quantities occurred from pathway 016, and no discharge occurred from 017 during 2010.
- c. In October, Discharge 001 D (Liquid Radioactive Waste Treatment System) annual grab samples for lithium, boron, and hydrazine were collected and analyzed. The results were 0.083 mg/I, 319 mg/I, and non-detect (less than 0.003 mg/I), respectively.
- 2. Facility Operating and Maintenance Manual Pacific Gas and Electric Company (PG&E) maintains a multiple volume Plant Manual at DCPP that contains procedures used for operation and maintenance activities at the plant, including those activities that relate to wastewater handling, treatment, sampling, analysis and discharge.
Plant procedures are prepared and reviewed by DCPP Staff and approved by DCPP Management.
DCPP conducts biennial internal audits that review NPDES plant procedures contained in the manual. Ongoing reviews of plant procedures are conducted to assure that the manual remains valid, current, and complete for the facility.
I
- 3. Laboratories Used to Monitor Compliance The underfollowing laboratories the appropriate were for agencies used during 2010Q for they thetest/analyses monitoring perform.compliance.
As part of They are certified the on-going annual certification process, these laboratories take part in, and have passed, annual quality performance evaluation testing.
- a. PG&E Chemistry Laboratory, DCPP, Avila Beach, California (Lab Certification # CA0! 036)
- b. Aquatic Bioassay Consulting Laboratories, Ventura, California (Lab Certification # CA0l1907)
- c. Creek Environmental, San Luis Obispo, California (Lab Certification # CA00975)
- d. Columbia Analytical Services, Kelso, Washington (Lab Certification # WA00035)
- e. TestAmerica, Inc., Earth.City, Missouri (Lab Certification # MO00054)
- f. Abalone Coast Analytical:, San Luis Obispo, California (Lab Certification # CA02661)
- g. Oilfield Environmental and Compliance, Santa Maria, California (Lab Certification # cA02438)
- 4. Review of Compliance Record and Corrective Actions
- a. Circulating Water Pump Chlorination/Bromination Monitoring The 2010 quarterly NPDES reports discuss chlorination cycles when discharge monitoring was interrupted. These are listed below with brief descriptions of the cause and respective corrective action. When these monitoring interruptions occurred, engineering evaluations (approved by the CCRWQCB January 13, 1994; PG&E Letter No. DCL-94-002) were performed. Detailed descriptions of these evaluations are included in the quarterly reports. Evaluations concluded that discharge chlorine limits were not exceeded during these events.
Chlorination Cycle T Date Monitoring! Cause ICorrective Action
___________ Interruptions _______________I_____ ____________
03/1 5110 Uni 2edn Plugged airline Airline cleared and cleaned 04/17/10 to Unit 1 04210 2 edns Defective monitor electrode Electrode replaced 07/23/10 to Unit 2 Debris clogging monitor. Debris removed 07/24/10 7 Readings sample line _______________
07/26/10 to Unit 2 07/27/10 5 Readings Leaking fitting in monitor Fitting replaced 11/03/10 to Unit 2 'Sample pump fouled with 11/10/10 42 Readings biological growth Samplepump cleaned 120/0Unit 2 Post-maintenance restart of ' Personnel involved interviewed
______ 1 Reading monitor delayed and coached
- b. Closed Cooling Water Releases During 2010, maintenance activities that required draining of closed cooling water systems were performed and are summarized below. PIG&E received concurrence from the CCRWQCB in response to letters dated July 19, 1995 (PG&E Letter DCL-95-1 56), May 23, 1996 (PG&E Letter DCL-96-522), and May 19, 1997 (PG&E Letter DCL-97-533) regarding the use of glutaraldehyde and isothiazolin to control microbiological growth and corrosion in DCPP's closed Cooling water systems. Any drainage from these systems is discharged at a flow-rate such that the chronic toxicity level is below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.
2
The volumes of cooling water drained in 2010. from the component cooling water (CCW), service cooling water (SOW), and intake cooling water (lOW) systems are presented below. The glutaraldehyde (Glut) and isothiazoline (Iso) concentrations presented in the table below are system concentrations, not concentrations at the point of discharge to receiving water.
(OilGrease& ]
J(mgII) 1jSolids 1 1 Total Rao Date____
Dt Ssem System___
Volume IGlut (gallons)] (mg/I) iIso Suspended (mgll) (mglll) J Reso Comments 01/06/10 Unit 1 1CW 3,370 76 5.7 n/a n/a Rputine Maintenance 01/13/10 Unit 1 SOW 33,000 < 50 7.5 12.0 < 1.4, Routine Maintenance 01 /14/10 Unit 1 CCW 930 158 0.0 n/a n/a Routine Maintenance 01/26/10 Unit 2 SOW 33,200 < 50 7.4 19.1 < 1.4" Routine Maintenance 05/04/10 Unit 2 SCW 33,350 67 5.1 < 2.0 < 1.4 Routine Maintenance 05/19/10 Unit 2 lOW 3,331 70 1.8 n/a n/a Routine Maintenance 06/09/10 Unit 1 SOW 33,10.0. 149 4.0 < 2.0 < 1.4 Routine Maintenance 06/27/10 Unit I CCW 378 175 n/a n/a n/a Routine Maintenance 07/26/10 Uritl1 COW 322 136 0.0 n/a n/a Routine Maintenance 08/10/10 Unit I COW 900 126 0.0 n/a n/a Routine Maintenance 08/17/10 Unit 1 lOW 3,320 63 9.2 n/a n/a Routine Maintenance 09/09/10 Unit 2 SOW 33,000 78 7.2 < 2.0 < 1.4 Routine Maintenance 09/18/10 Unit 1 COW 522 140 0.0 3.2 < 1.4 Routine Maintenance 09/22/10 Unit I COW 4,200 113 0.0 < 2.0 < 1.4 Routine Maintenance 10/02/10 Unit I SOW 8,250 .172 2.9 < 2.0 < 1.4 Routine Maintenance 10/08/10 Unit 1 lOW 1,100 .< 50 2.3 n/a n/a Routine Maintenance 11'/04/10 Unit 2 lOW 121 185 4.6 n/a n/a Routine Maintenance 11/10/10 Unit 2 lOW 3,314 185 4.6 n/a n/a Routine Maintenance 11/18/10 'Unit 2 SCW 33,200 < 50 1.9 10.3 < 1.4 Routine Maintenance
- c. Exceedances On April 29, 2010 chemical drain tank (CDT) 0-2 was discharged via permit pathway 001D with a grease and oil (G&O) concentration of 30 mg/I. The discharge resulted in an exceedance of the daily maximum limit of 20 mg/L G&O for the pathway. The exceedance was not discovered until after the 2 nd Quarter CIWQS Electronic Data Report (eSMR) was submitted on July 20, 2010.. The event was discovered during final review of the USEPA DMR Forms for the same reporting period. The CIWQS eSMR and DMR Forms for the 2nd Quarter 2010 reflected the correct monitoring data, and the DMR submittal appropriately documented the exceedance.
Verbal notification of the event to the Regional Water Quality Control Board staff occurred on
- July 2l,2010.
Follow-up investigation determined the G&O discharge daily maximum of 30 mg/L exceeded the
- respective 20 mg/L permit limit by 50.0% as a result of this event.
Subsequent to discovery, the processes and procedures for approving tank discharges via pathway 001 D were' reviewed in detail. Procedural data sheets and associated review processes implemented.prior to authorizing a chemical drain tank wastewater release have been enhanced to prevent a discharge through pathway 001tD if constituent parameters are not in specification with NPDES permit limitations.
3
B. Monitoring of Receiving Water
- 1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2010 under the Receiving Water Monitoring Program (RWMP) as requested in a letter from the Central Coast Regional Water Quality Control Board (CCRWQCB) dated December 9, 1998, and as detailed in a letter from PG&E dated January 8, 1999 (DCL-99-503). This program includes tasks from~the Ecological Monitoring Program (EMP) with additional stations and increased sampling frequencies. This program replaces the EMP and the Thermal Effects Monitoring Progr'am (TEMP). Several one-year-only tasks outlined in the above letters were completed in 1999 and were not requested to be performed in 2010. Results of 2009 RWMP data were submitted to the CCRWQCB on April 29, 2010. A table in Appendix 4
- summarizes requirements a~nd completed monitoring tasks for 2010.
3.
- 2. In Situ Bioassay Results of the Mussel Watch Program are reported to the CCRWQCB directly by the California Department of Fish and Game in the agency's periodic report for this program.
- C. Sodium Bromide Treatment Program DCPP continued its integrated sodium bromide and "foul release coating"' strategy to control macrofouling ih the Circulating Water System (CWS). The treatment program consists of six 20-minute injections (at four hour intervals) of a blend of generic sodium bromide and sodium hypochlorite into DCPP's seawater intake conduits. Each injection attempts to achieve a target concentration of 200 parts per billion (ppb) Total Residual Oxidant (TRO) at the inlet waterbox of the main condensers. Discharge TRO, measured at the plant outfall, remained below NPDES limitations. Typically, discharge values were between 20 ppb and 50 ppb. In conjunction with the chemical treatment, untreated portions of the cooling water system were previously painted with a non-toxic "*foul release coating" to reduce or. prevent attachment of fouling organisms.
Both conduits of Unit 1 were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day through the middle of February 2010 with two brief interruptions in January for maintenance activities. In mid February, injections were shut down in preparation for mid-cycle tunnel cleaning. Simultaneous injections six times a day were restarted in late February and ran through August with brief interruptions in March, April, and August for maintenance activities. Unit 1 injections were shut down at the end of September for the 1R16 refueling outage. Simultaneous injections of sodium hypochlorite and sodium bromide were restarted at the beginning of November and ran through the remainder of 2010 with brief interruptions in early November due to high ocean swell activity, and late December due to maintenance activities.
Both Unit 2 conduits were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day throughout 2010 with brief interruption's in January, March, April, August,-
October, November, and December for maintenance activities.
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- Anntlual Discharge Monitoring Report ApPENDIX I D iABLO CANYON POWER PLANT.:
............ NPDES DISCHARGE PO~iNTS: ! ..- .............
':.....DISCHARGE . .. ........ NUMBER ::" ' ":'::: DEscRIPTION:::":":: :
- .
- :: :. :::'001 :.: ::.. : . .O~nceThou.gh CoolinigW ater... : .
- 0,01 ,A , *:.." Fir[ewater Systems .... ...
- ........... 001...
O~ B ................. :... AuJxiliary Salt Water Cooling.System:
001. Ci . . .. .Di...scharge. Deleted .. .
'i............ 001...
O0iD ' :....... ..... ... ... Li~quidRadioactive W aste* .. .
____ ____ ____ Treatment :System . . ...
! ................. :001! E .. .. ; .Service Cooling :Water Sys~tem :
. .!001 .. ...... .. Tur~bine Building Su~mp)."....
' . o:001 G. , .Make-Up Water SystemiWaste Effl~uent........
!.'" "":001: H . : .,:... *Condenisate D~emineralizer Regeneran't
- ................. Q00 i J Condens.........te.
- Pumps: Discharg~e Heade-r*
______ ___... ..... __ .. .. O verboard: " ". .
. .. . ;001 K ... ...... ... Condenser Tube Sheet Le~akDetection
____........___...........____ :Duimp Tan~k Over~board:
- ,"
- ": 001. '
.. i0L .. i.,Steam-Generator:Blowdown, i 001 N :: Sanitary Wastewater :Treatment: ..
__________________ S "ystem S001 P Seawater ReverSe Osmosis :System.
_______..........____ iBlowd~own *.*."
................... 0.02 .... ".......... I ntake Structure -Building!Floor* Drains
- ...... ..... . !0.3.
... 0 .. .... ... . .... _i ...... ... .intake Screen Wash...... ....
" .......::': ::: 00:4:. .: .. .::, : - :.,.: Bio Lab an~d Storm. Water Run~off S...0.05, 008,:009, 013:, ;014, 015: .... ..... Yard .Storm Drains.-
- ....006, .007, 010o, :011;, .012: _. ::............ Storm Waiter RUnoff
........... 016.... Bio.Lab :Seawater SupyPm" av
..... .. ...._.... ..... .. ........ ...... .. ........ .. .. .. ... .. ... *.... ..Blowdo w n 'Drain . .. :: .......
Annual Discharge Monitoring Report APPENDIX 2 TABULAR SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001
- MPERATLJRE (DEG F) FLOW (MGD)
IN'FLUENT EFFLUENT DELTA T Month high low avg high__ low "avg* high avg high low avg JAN 57.5,- 55.6 56.7 76.6 63.5 75.1 19.7 18.4 2486 1279 2198 FEB 57.0 54.6 56.1 75.9 73.5 74.9 19.3 18.8 2486 1874 2413 MAR 56.9 50.4 52.5 75.5 69.1 71.1 19.1 18.6 2486 1862 2446 APR 54.2 50.2 52.3 73.1 68.9 71.1 18.9 18.8 2486 2486 2486 MAY 51.5 48.5 50.1 70.4 67.2 68.9 19.0 18.8 2486 2486 2486 JUN 52.2 49.4 50.6 71.5 68.1 69.4 19.3 18.2 2486 2486 2486 JUL 54.7 50.0 52.7 73.7 68.2 71.2 19.6 18.5 2486 2486 2486 AUG 54.2 50.5 52.3 73.1 69.8 71.3 19.4 19.0 2486 2486 2486 SEP 54.9 51.3 52.6 74.1 70.1 71.6 19.4 19.0 2486 2486 2486 OCT 58.3 53.5 55.9 78.6 71.0 75.3 20.3 19.4 2486 863 1363 NOV 56.6 51.9 54.6 75.5 70.1 62.9 19.4 15.4 2486 1502 2346 DEC 55.6 51.4 53.9 74.1 70.2 72.4 19.1 18.6 2486 1862 2446 limit: - -22 2760 The Influent and Effluent "high" and "low" temperture values correspond to the highest and lowest daily average value for that month. The Influent high and low temperature does not necessarily correspond to the same day as the Effluent high and low temperature for that month. The "avg" temperature for Influent and Effluent is the av~erage for the entire month. The Monthly Delta T "high" is the highest Delta T for a day of the month based on daily average lnfluent and Effluent temperature values. The "Avg" temperature is calculated from Influent and Effluent monthly avg values.
DISCHARGE 001 TOTAL RESIDUAL TOTAL CHLORINE CHLORINE (daily max. ug/I) USED (lbs/day)
Month high low avg high low avg JAN 52 16 38 562 70 484 FEB 57 .36 46 562 259 468 MAR 62 17 42 .518 271 "416 APR 68 <10 39 475 302 402 MAY 52 11 32 360 331 351 JUN 48 <10 19 432 374 391 JUL 21 <10 10 490 374 467 AUG 26 13 19 605 295 500 SEP 36 <10 17 577 446 499 OCT . 7 <7 <7 418 48 277 NOV 52 15 27 533 230 422 DEC 37 10 23 504 298 451 Note: The residual chlorine limits in Permit CA0003751, Order 90-09, is an instantaneous max of 200 ugii, and includes a time-based~limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.
Page I of 6
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/l)
CHROMIUM COPPER NICKEL *ZINC Month Influent Effluent lnfluent Effluent In fluent Effluent Influent Effluent JAN ND(S) ND(5) ND(S) ND(5) ND(5) DNQ(S) DNQ(6) ND(5)
FEB ND(S) ND(5) ND(5) ND(S) ND(5) ND(S) DNQ(5) ND(S)
MAR ND(5) ND(S) DNQ(6) ND(S) ND(S) ND(S) 13 ND(5)
APR ND(S) "ND(S) ND(5) ND(5) DNQ(8) DNQ(9) DNQ(6) DNQ(5)
MAY ND(S) ND(S) I11 DNQ(6) DNQ(9) DNQ(8) 11 ND(5)
JUN ND(5) ND(S) ND(S) ND(S) ND(5) ND(5) ND(S) ND(5)
JUL ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(6) ND(S)
AUG ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(8) DNQ(8)
SEP ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(6) DNQ(6)
OCT ND(S) ND(S) ND(S) ND(S) 11 11 ND(S) ND(S)
NOV ND(S) ND(S) ND(S) DNQ(6) 13 13 14 ND(S)
DEC ND(S) ND(S) ND(S) ND(S) 10 DNQ(9) ND(S) ND(S) 6-month median limit: 10 - 10 - 30 -70 VARIOUS DISCHARGE ANNUAL ANALYSES001 (monthly avg. ug/I) 6-Mo. Med.
Effluent Parameter lnfluent Effluent Limit Arsenic 1.52 1.53 30 Cadmium 0.055 0.052 10 Cyanide ND(10) ND(10) 30 Lead 0.18 0.04 10 Mercury DNQ(0.02) DNQ(0.04) 0.2 Silver DNQ(0.006) DNQ(0.004) 2.9 Titanium DNQ(0.4) DNQ(0.4) none
- Phenolic Compounds ND(8.42) ND(8.42) 150 (non-chlorinated)
- Phenolic Cmpds ND(2.02) ND(2.02) 10 (chlorinated)
- PCB's ND(0.0658) ND(0.0658) none
- Results for analysis of 9 target compounds. The sum of the 9 detection limits is 8.42.
- Results for analysis of 6 target compounds. The sum of the 6 detection limits is 2.02.
- Detection limits shown are the sum of individual detection limits for 7 targ~et compounds.
DISCHARGE 001 AMMONIA (as N) (ughl)
Month Influent Effluent JAN ND(41) ND(41)
FEB MAR APR MAY 134 76 JUN JUL 170 230 AUG SEP OCT NOV 64 82 DEC 6-month median limit: 3,060 Page2of 6
I,' " : I' 2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)
Discharge: 001 002 003 004 001P Month Influent Effluent JAY 8.0 8.0 8.1 8.1 8.1 7.8 FEB 8.0 8.0 8.1 8.1 8.1 7.8 MAR 7.8 7.8 .8.0 8.0 .8.0 7.8 APR 8.0 8.0 7.9 8.1 8.0 7.8 MAY 7.9 . 7.9 7.7 8.1 8.0 7.8 JUN 7.9 7.9 7.9 7.9 7.9 7.6 rJUL 8.0 7.9 8.0 7.9 8.2 7.8 AUG 7.8 7.8 7.9 7.9 7.6 7.6 SEP 8.0 8.0 8.0 8.0 7.8 7.8 OCT 8.0 8.0 . 7.9 7.7 8.0 7.7 NOV 7.9 , 7.9 7.8 7.9 7.9 7.6 DEC 8.0 8.0 7.9 7.9 8.0 7.8 DISCHARGE 001F SUSPENDED GREASE & OIL (mg/I) SOLIDS (mg/I)
Month high avg high avg JAN ND(1.4) ND(1.4) ND(2). ND(2)
FEB 6.1 6.1 19 18 MAR DNQ(1.7) DNQ(1.7) ND(2) ND(2)
APR ND(1.4) .ND(1.4) DNQ(3) DNQ(3)
MAY ND(1.4) ND(1.4) DNQ(3) DNQ(3)
JUN ND(1.4) ND(1.4) DNQ(3) DNQ(2)
JUL DNQ(t.4) DNQ(1.4) DNQ(3) DNQ(3)
AUG ND(1.4) ND(1.4) DNQ(2) <2 SEP ND(1.4) ND(1.4) DNQ(2) <2 OCT ND(1.4) ND(L.4) DNQ(2) DNQ(2)
NOV ND(1.4) ND.(1.4) DNQ(3) DNQ(3)
DEC ND(1.4) ND(1.4) DNO(3) <2 limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average L~imits.
DISCHARGE 001N (Monthly Summary of Weekly Data)
SUSPENDED SETTLEABLE SOLIDS (mg/I). SOLIDS (mi/l)
GREASE & OIL (mg/I)
Month high low avg high _ low avg high low avg, JAN ND(5.0) ND(5.0) ND(5.0) 13 7 11 ND(0.1) ND(0.1) ND(0.1)
FEB ND(5.o) ND(5.o) ND(5.0) 19 13 16 ND(o.1) ND(0.1) ND(0.1)
ND(5.O) ND(5.0) ND(5.O) 15 7 11 ND(0.1) ND(0.1) ND(0.1)
APR DNQ(2.2) ND(1.4) <5.0 18 DNQ(4) 7 ND(O,05) 'ND(0.05) ND(O.05)
MAY ND(1.4) ND(1.4) ND(1.4) 11 7 9 ND(0.05) ND(0.05) ND(0.05)
JUN DNQ(L.4) ND(i.4) DNQ(I.4) 22 8 13 ND(0.05) ND(0.05) ND(0.05)
JUL DNQ(2.4) ND(1.4)' DNQ(1.4) 23 7 15 ND(0.1) ND(0.1) ND(0.1)
AUG ND(1.4) ND(1.4) ND(1.4) 19 6 10 ND(0.1) ND(0.1) ND(0.1)
SEP DNQ(1.8) ND(I.4) <1.4 16 ND(2) 9 ND(0.1) ND(0.1) ND(0.1)
OCT DNQ(2.6) ND(1.4) DNQ(I.4) 17 4 10 ND(0.1) ND(0A1) ND(0.1)
NOV DNQ(3.8) " ND(1.4) DNQ(1.4) 12 7 9 ND(0.1) ND(0.1) ND(0.1)
DEC <5.0 ND(I.4) <5.0 13 7 10 ND(0.1) ND(0.1l ND(0.1) limit: 20 .- 15 - 60 3.0 -1.0
- Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
Page3of 6
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H 001L 001F Month Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu JAN "ND(S) ND(5) ND(S) DNQ(9) ND(5) ND(5) 12 35 ND(S) ND(5) ND(S) ND(5) ND(S) ND(S) ND(S) DNQ(9)
FEB MAR APR ND(S) ND(5) ND(S) DNQ(7) ND(5) ND(S) 33 21 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(9)
MAY JUN JUL ND(S) NDC5) ND(S) DNO(9) ND(S) ND(S) 25 24 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) 15 AUG SEP OCT ND(5) ND(5) DNQ(6) DNQ(6) ND(S) ND(S) 18 72 ND(S) ND(S) ND(S) ND(S) ND(S) ND(5) 35 92 NOV DEC limit: none Note: 001D, 001H and C01L analyses performed on quarterly composites.
001F analyses performed quarterly on a composite of weekly samples.
DISCHARGE 00lD, H. L, F, METALS (avg. ug/1) 001D 001 H 0COIL 00IF Month Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn _ Hg Ni Pb Zn JAN ND({0.20) DNQ(5) ND(S) 120 ND(O.20) 12 DNQ(9) 18 ND(0.20) ND(S) NID(5) DNQ(5) ND(0.20) DNQ(6) ND(S) 18 FEB MAR APR DNQ(0,092) ND(S) ND(S) 120 DNQ(0.015) 17 DNQ(7) 19 DNQ(0.108) ND(S) ND(S) ND(S) .ND(0.0S0) DNQ(7) ND(S) 29 MAY JUN JUL ND(O.050) DNQ(6) ND(S) 109 ND(0.O50) 17 ,DNQ(8) 12 ND(0.O50) ND(S) ND(S) ND(S) ND(0.O50) DNQ(8) ND(S) 18 AUG SEP OCT ND(0.SO5) DNQ(5) ND(S) 149 DNQ(t.069)* 15 DNQ(S) 13 DNQ(0.062) ND(S) ND(S) ND(S) ND(0.10) 46 ND(S) 259 NOV DEC limit: none
.Note: 001D, CO1H and 0OIL analyses perforErreed on quarterly composites.
O01F analyses performed quarterly on a cornposite of weekly samples.
Page 4 of 6
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (mg/i)
Month 001D* 001G 001H 0011 001J -001K QOlL O01M 001P 002 003
.JAN <5 ND(2) ND(2) ND(2) DNQ(2) 9 6 FEB <5 ND(2) ND(2) ND(2) DNQ(3) <5 DNQ(2) 24 MAR <5 ND(2) ND(2) ND(2) 6 <5 DNQ(3) 5 APR <5 ND(2) ND(2) ND(2) <5 <5 21 MAY DNQ(4)
- ND(2) ND(2) ND(2) 11 DNQ(3) 6 JUN <5 ND(2) ND(2) ND(2) 7 ND(2) 8 JUL <5 ND(2) ND(2) ND(2) 19 DNQ(3) <5 AUG <5 ND(2) ND(2) ND(2) ND(2) 18 ND(2) <5 SEP <5 ND(2) DNQ(2) ND(2) 13 6 DNQ(2)
OCT <5 ND(2) ND(2) ND(2) 14 DNQ(3) DNQ(3)
ND(2)
NOV <5 ND(2) <5 DNQ(4) ND(2) DNQ(3) 26 5 12 DEC <5 ND(2) ND(2) ND(2) DNQ(2) DNQ(2) DNQ(2) 13 Limit: 30 30 30 30 30 30 30 30 30 30
- Discharges from 001D~are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K during 2010.
Blank spots for other discharge points indicate that no discharge occurred during that particular month.
QUARTERLY GREASE & OIL Averages by Month (mg/I)
Month 001D* 001G 0O1H 0011 001J 001K 001L 001M 001P 002 003 004 JAN DNQ(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
FEB ND(1.4) ND(1.4) ND(I.4)
MAR DNQ(1.6)
APR <5 ND(I.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
MAY JUN JUL DNQ(1.S) ND(I.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(I.4) ND(1.4)
AUG DNQ(2.0) ND(I.4)
SEP DNQ(3.7)
OCT DNQ(3.3) ND(I.4) ND(1.4) ND(1.4) ND(L.4) ND(I.4) ND(I.4) ND(I.4) ND(I.4)
NOV 7.7 ND(1.4) ND(1.4).
DEC ND(1.4) ND(1.4)
Limit: 15 15 15 15 15 15 15 15 15 15 15 15
- Discharges from 001D are batched. Monthly averages are flow weighted. A daily maximum exceedence in April is not reflected in this table.
Not~e: No discharges occurred from 001! and 001K during 2010.
Page 5 of 6
2010 Annual Summnary Report on Discharge Monitoring' at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tila and tUc)
ACUTE *CIHRONIC Test 6-Month Test Month Result Median Result JAN 0.00 0.00 1.0 FEB MAR APR 0.00 0.00 1.0 MAY JUN JUL 0.00 0.00 AUG SEP OCT 0.00 0.00 1.0 NOV DEC 6-month median limit: 0.26 5.1
- This parameter is monitored for the State Ocean Plan instead of the NPDES Permit. A value of 1.0 indicates no chronic toxicity.
DISCHARGE 001N ANNUAL ANALYSES Sludge Parameter Result SLimit Percent Moisture 99.3% None Total Kjeldahl Nitrogen 240 mg/I None Ammonia (N) 180 mg/I None Nitrate (N) DNQ(0.11) None Total Phosphorus 184 mg/I None pH 7.01 None Oil and Grease 140 mg/I None' Boron 1.0mg/I. None Cadmium 0.0034 mg/I 10 X STLC*
Copper 0.48 mag/I lO X STLC Chromium 0.015 mg/I 10X STLC Lead 0.018 mg/I 10X STLC Nickel ND(0.002) mg/I 1OX STLC Merciury 0.0011 mg/I 10 X STLC Zinc 3.8 mg/I *10 X STLC Volume 2.20 tons None Note: Annual samples were collected in October.
- STLC = Soluble Threshold Limit Concentration P,,
Page 6of 6
Annual Discharge Monitoring Report
_*APPENDIX 3 GRA*PHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT Tempermare (°F) 90.0 T 80.0 70.0 60.0 50.0 40.0I 30.0 20.0 +<
10.0 4T 0.0 --
JAN FEB MAR APR lA JN JIL AG SEP OCT NOV" DEC DISCHARGE 001 EFFLUENT Temperature(014) 80.0 S~
30.0 4 20.0 1+
20.0 {.
!0.0 -- _______
JAN FEB MAR A4PR MlAY JUN JUL AUG SEP OCT NOV DEC 2010 Page l of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow (MGD) 3.000 2500 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 DISCHARGE 001 EFFLUENT 0 Monthly Delta T ( F) 25 m l m i m m m m 20 __ m m nn-A L[
15 T S10 4 5+
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Page2ofl5
2010 Annual Summary Report on Discharge Monitoring at the Diabio Canyon Power Plant DISCHARGE 001 Total Chlorine Residual, ug/!
140 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Values plotted at zero were below the reporting limit.
DISCHARGE 001 Total Chlorine Used,pownds per day --- i~
500 A.-
+ 400+
2001 01 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Page3 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Copper ('monthly average. Ug/1) 12 10 8
4 2
0i4 --
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit ror values plotted at zero.
The 6-month median limit (the most conservative limit) is plotted on this chart (this is also the analytical reporting limit).
The daily maximum limit for Copper is 50 ughl.
DISCHARG E 001 Nickel (monthly average,ug/l) 35 20 10 10 10 10 10 10 10 10 10 10 10 10 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit (the moat conservative limit) is plotted on this chart.
The daily maximum limit for Nickel is 100 ughl.
Page 4 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zinc (monthly average, ug4l) 80 70 60
- U--I---elhwge Permit Limit
- lfluetti 50
- Anslytitta Reportiug[ Umit 30 20 10 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001 Chromium (monthly average, ug,?)
12T b6 U.
8 K -UPermit Uimli jnd
-- 4-- Emtrnet Reporttag Limit
=
4 i-JAN FEB MAR APR MAY JUN JUL AUG SEP OC~i" NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit is plotted on this chart. The daily maximum limit for chromium 1s 40 ug/I.
The discharge permit limit and the analytical reporting limit are the same (10 ug/i).
Page5 of 15 I
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant pH 8.8.2 8.1 8.0 7.9
- o. 7.8 7.64 **~Ol Emfueni 7.5 + 0 7.4* -4.-004 7.3 1........
- + . . .. + . .... -- .
-- . -- ...------- -- - I -- ..... .
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Several data points on this chart overlap.
Discharge 001 Ammonia (as N, ug/I)
T5o 3000--
m l nm mii Lm m i i
- 2000 "-I afl~wul 20100 4- K-- ~nm 1000 +
500-0 &. ................. ---- -- t . - ..... 4....... -- -A ...... - .....--j- -* --
JAN FEB M*AR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
influent and Emfuent values overlap at three points on this plot.
Page6of 1 5
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Oil & Grease 25.0 1T 20.0 15.0 U
10.0 5.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note; Values plotted at zero were below the detection limit.
DISCHARGE 001F SuspendedSolids (Maximwm. ng/i 120 T IEIu* * * * *. * * * * * *--"
80 U Daity Maxium Uimit
"-S- Momthly Average Limit 4 eml Samle ltllMaximom) 60 AaykI eoln m 4O 0
- T -,.
- _ ** . *.
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Maximum values are plotted.
Page 7 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 25 20 -
,*I5 --
Blo 5
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Values plotted at zero were below the detection limit.
High, low and average values overlap at eleven points on this plot.
70-60 i 30 20 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 DISCHARGE 001N Settleable Solids (mill) 35T 4-Di, Mazini u U,n It
[ .---
2: I ..-O"Mwinthly
-* Aver*5e Limit iug
.5g 3
O,* -.- *- -*- - -*- -
JAN FEB MAR APR MAY JUN 2010 JUL AUG SEP OCT NOV DEC Note: Values plotted at zero were below the detection limit.
High, average, and low values overlap at eleven points on this plot.
Page8oflS I
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE O01D QuarerlyMetals (ug/I) nmCadmluml
[] Chromium U
2 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARG E 001D QuarterlyMetals (ug4) 160 i
140+/-
120 ULead 100 ONickel jnZince 40 20 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 9 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Quarterly Metals (ug/I) 100 -
80~
50~
UICadmiumn 0lsilver 40 ElChromium
+/-
I 30 UICopper 20 +
03.- ....... -+... .. ... -_ _
JAN FEB MAR APR MAY JUJN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001F Quarterly Metals (up/I) 140 120 iJ tOO00 80
[
I IMereuryi1 O
1ELeadi*
404+II~u 20 - - *+.........
JAN FEB MAR APR MAY JUN JUIL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page JO of15S
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001H Quarterly Metals (ug/l)
I 80 nSilver
- C~dminmm 70 ~IEChronmiumI I ~oper
=
30H JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001H Quarterly Metals (ugA4) 20-18 [1i MercuryI]
ENiekel ]
16 EILead I 14-12-8-
6-4.
2-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page IIlofl$S
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001L QuarterlyMetals (ag/i) 30w 25 20+/-
r- iver~
[]Cadmium t0 nmChromiumn 5-0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001L QuarterlyMetals (ug/I)
'to 4r+ Nickel U ]Lead JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 12 of15S
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS 35 - (Average* mg/l) 25 t 4rMooahy Average Limit 15 -+ -0--o11 10 +
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS 3 (Average, mg/I)
F- %oithly Av'erage Limit 20 4- OOIL I -@001L 10 .T 0)- * - * * $ -
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS -- lM.y A,#rge Lit* i (Average, mp/1) -...-- 0o2 25 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
Page I3of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (Average, ing')
16 T 14 ___i_____i 12 fi01D 102010 A5 dai3 m Mnly ~aximu Uxedncefr01 nArlsntrietdtnti lt nyavrgsaepotd JAN FEB A QUAPRTEMAY JUIJL & RAUG SP OTEO E (Average, mg/i) 16T- * * ~
- I0 ÷ loou
- "- - - -4 - - n-Mnll vrg ii JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: V'alues plotted at zero were below the detection limit.
QUARTERLY OIL & GREASE (Average, rag/I) 16 -r 2
8- 0oolp 6 t s--Monthly i.Aternp Limit 41-0 4--+---4--- ---- 4-+---- ---- -- .. -+---------I----- ---
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Values plotted at zero were below the detection limit.
Pae1lfI
2010 Annual Summary ,Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY (6-Month Median) 6.0 I'*3. --O---6-muo. Median Acute Limit
-- i--Acute Bioassay Results
"* 2.0. !-- -Acute 6-month Median JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Page 15 of15S i i i I I Ill*
Annual Discharge Monitoring Report APPENDIX 4
SUMMARY
OF RWMP MONITORING FOR 2010 RWMP 1st Survey 2nd Survey 3rd Survey 4th Survey Stations/ Completion Completion. Completion Completion Study Surveys Stations/ Stations/ Stations/ Stations/
____________ per Year Dates Dates Dates Dates Horizontal Band Transects 14 / 4x Feb 26 Jun 16 Aug 9 Dec 21 Vertical Band Transects 5/I4x Feb 12 Jun 16 Aug 11 Dec 8 Benthic Stations 8 / 4x Apr 19 Jun 3 Sep 1 Nov 18 Fish Observation Transects 12 / 4x May 10 Jul 9 Sep 13 Dec 13 Bull Kelp Census */ lx n/a n/a n/a Oct 22 Temperature Monitoring 24 / ** Jan-Mar Apr-Jun Jul-Sep Oct-Dec
- Diablo Cove census.
- Temperature measured throughout the year at 20 minute intervals (14 intertidal and 10 subtidal stations):
ANNUAL
SUMMARY
REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2011
PG&E Letter No. DCL-2012-507 2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS PAGE OVERVIEW 1
SUMMARY
OF MONITORING PROGRAM 1 A. Monitoring of Plant Influent and Effluent 1
- 1. Monitoring Data 1
- 2. Facility Operating and Maintenance Manual 1
- 3. Laboratories Used to Monitor Compliance 2
- 4. Review of Compliance Record and Corrective Actions 2 B. Monitoring of Receiving Water 4
- 1. Ecological Studies at Diablo Canyon 4
- 2. In-Situ Bioassay 4 C. Sodium Bromide Treatment Program 5 APPENDICES Appendix 1- NPDES Discharge Points Appendix 2- Tabular Summaries of Influent and Effluent Monitoring Appendix 3- Graphical Summaries of Influent and Effluent Monitoring Appendix 4- Summary of RWMP Monitoring for 2011
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant OVERVIEW This annual summary report follows the format used in quarterly monitoring reports. Analytical results below the respective analytical detection limit (ND or non-detect) are plotted as a "zr" value in accordance with ELAP guidance. Results between the analytical detection limit and reporting (quantitation) limits are plotted at the value and shown as 'DNQ' in the tabular summaries as is done for CIWQS reports. Less-than results are typically reported to express an average of values that include non-detects and at least one positive result.
These less-than results are plotted conservatively at the-v~alue. During 2011, discharges occurred from all discharge paths except 0011, 001K, 016, and 017.
B. California Ocean Plan Table B substances that were not analyzed for have not been added to the discharge stream. *The substances listed in Table B in the California Ocean Plan were each analyzed for and reported in the permit renewal application and application updates for Diablo Canyon Power Plant (DCPP) submitted in October 1994, January 2001, and April 2011. There have been no changes in activities conducted at the plant that would have significantly affected the results previously reported in the above referenced documents.
SUMMARY
OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent
- 1. Monitoring Data
- a. Appendix I provides a list of discharge path names for ease of reference. Appendix 2.contains monitoring data in tabular form. Appendix 3 contains monitoring data in graphical form.
- b. Annual oil and grease analyses were performed in October on Stormwater/Yard Drain Discharges 005, 008, 009, 013, and 015. Results are listed below. No discharges that resulted in adequate sample quantities occurred from pathway 016, and no discharge occurred from pathway 017 during 2011.
005 non-detect - ND(1 .4 mg/I) 008 non-detect - ND(1 .4 mg/I) 009 Value below reporting quantity - DNQ(1 .5 mg/I) 013 non-detect - ND(1.4 mag/I) 015 Value below reporting quantity - DNQ(2.9 mg/I)
- c. In October, Discharge 001D (Liquid Radioactive Waste Treatment System) annual grab samples for lithium, boron, and hydrazine were collected and analyzed. The results were non-detect (less than 0.050 mg/I), 380 mg/I, and 0.004 mg/I, respectively.
- 2. Facility Operating and Maintenance Manual Pacific Gas and Electric Company (PG&E) maintains a multiple volume Plant Manual at DCPP that contains procedures used for operation and maintenance activities at the plant, including those activities that relate to wastewater handling, treatment, sampling, analysis and discharge.
Plant procedures are prepared and reviewed by DCPP Staff and approved by DCPP Management. DCPP conducts biennial internal audits that review NPDES plant procedures contained in the manual. Ongoing reviews of plant procedures are conducted to assure that the manual remains valid, current, and complete for the facility.
I
- 3. Laboratories Used to Monitor Compliance The following laboratories were used during 2011 for monitoring compliance. They are certified under the appropriate agencies for the test/analyses they perform. As part of the on-going annual certification process, these laboratories take part in annual performance evaluation testing.
- a. PG&E Chemistry Laboratory, DCPP, Avila Beach, California (EPA Lab # CA01 036)
- b. Aquatic Bioassay Consulting Laboratories, Ventura, California (EPA Lab # CA01907)
- c. Columbia Analytical Services, Kelso, Washington (EPA Lab # WA00035)
- e. Abalone Coast Analytical, San Luis Obispo, California (EPA Lab # CA02661)
- f. Oilfield Environmental and Compliance, Santa Maria, California (EPA Lab # CA02438)
- g. Pacific EcoRisk, Fairfield, California (EPA Lab # CA01 307)
- 4. Review of Compliance Record and Corrective Actions
- a. Circulating Water Pump Chlorination/Bromination Monitoring The 2011 quarterly NPDES reports discuss chlorination cycles when discharge monitoring was interrupted. These are listed below with brief descriptions of the cause and respective corrective action. When these monitoring interruptions occurred, engineering evaluations (approved by the CCRWQCB January 13, 1994; PG&E Letter No. DCL-94-002) were performed. Detailed descriptions of these evaluations are included in the quarterly reports. Evaluations concluded that discharge chlorine limits were not exceeded during these events.
Date J
Chlorination Cycle Monitoring Interruptions ______________
Cause [Cor rectiveAction 03/09/11 to Unit 2 Sample Pump Fouled with Sml upCend 03/16/11 22 Readingqs Aggressive Biological Growth. Sml upCend 06/22/11 to Unit I Three-Way Sample Valve Fouled VleCend 06/29/11 42 Readings with Biological Debris.
07/06/11 to Unit 1 Meter Test Value Low. No Monitor Power Cycled. Test Value 07/13/11 5 Readings Apparent Cause Determined. Returned to Normal.
- 08/03/11 to Units 1 and 2 Electric Line Power to Discharge Electrical Power Restored.
- 08/04/11 10 Readings Monitors Lost.
08/17/11 to Unit 1 Monitor Sample Pump Discharge Sample Pump Cleaned.
08/24/11 31 Readings " Fouled by Debris. _________________
- b. Closed Cooling Water Releases During 2011, maintenance activities that required draining Of closed cooling water systems~were performed, and are summarized below. PG&E received concurrence from the CCRWQCB in
- response to letters dated July .19, 1995 (PG&E Letter DCL-95-156), May 23, 1996 (PG&E Letter DCL-96-522), and May 19, 1997 (PG&E Letter DCL-97-533) regarding the use of glutaraldehyde and isothiazolin to control microbiological growth and corrosion in DCPP's freshwater closed cooling water systems. Any drainage from these systems is discharged at a flow-rate such that the chronic toxicity level is below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.
2
The volumes of cooling water drained in 2011 from the component cooling water (COW), service cooling water (SOW), and intake cooling water (lOW) systems are presented below. The glutaraldehyde (Glut) and isothiazoline (Iso) concentrations presented in the table are system concentrations, not concentrations at the point of discharge to receiving water.
Date System 1glos .r Volu Ge (gI)so
_______________________Solids Total (mg/I) Suspended (mg/I)
Oil &
Grease (mlI Ra o Comments 01/07/11 to Unit 2 SCW 1,670 54 1.3 n/a n/a Routine Maintenance 01/1 5/1 1 ______
01/19/11 Unit 1 SCW 29,800 112 2.0 6.5 2.5 Routine Maintenance 02/01/11 Unit 1 1CW 9 < 50 1.3 n/a n/a Routine Maintenance 02/03/li Unit 2 SOW 15 107 2.0 n/a n/a Routine Maintenance 03/30/11 - Unit 2 lCW 22 < 50 6.0 n/a n/a Routine Maintenance 05/05/11 - Unit 2 SOW 9,500 136 7.8 < 2.0 < 1.4 Routine Maintenance 05/07/11 Unit 2 lOW 1,150 116 5.4 n/a n/a Routine Maintenance 05/31/11 Unit 1 ICW 3,300 83 1.1 n/a n/a Routine Maintenance 06/08/11 Unit 1 SOW 33,158 62 4.9 9.3 < 1.4 Routine Maintenance 06/09/11 Unit 2 SCW 33,000 <50 2.4 29.1 4.5 Routine Maintenance 06/20/li Unit 2 SOW 450 98 <0.25 n/a n/a Routine Maintenance 07/19/11 Unit 2 SOW 12 55 <0.25 n/a n/a Routine Maintenance 07/25/11 Unit 2 ICW 5 167 3.1 n/a n/a Routine Maintenance 10/11/11 Unit 2 SOW 28,400 6.1 3.7 < 2.0 < 1.4 Routine Maintenance 11/28/11 Unit 2 SOW 500 < 50 0.6 n/a n/a Routine Maintenance 11/28/11 Unit 2 SOW 10 < 50 0.6 n/a n/a Routine Maintenance 12/18/11 Unit 2 SOW 10 84 2.5 n/a n/a Routine Maintenance 12/20/11 Unit 1 ICW 3,306 80 6.4 n/a n/a Routine Maintenance 12/26/li Unit 1 SOW 10 117 5.0 n/a n/a Routine Maintenance 12/27/li Unit 2 IOW 3,514 117 6.5 n/a n/a Routine Maintenance
- c. Exceedances On February 11, 2011 it was discovered that Unit 1 outfall residual chlorine monitor readings were abnormally high during the first few minutes of the five previous unit specific 20-minute seawater conduit chemical treatment cycles. Two chemical injections on February 10 th, and three chemical injections on February 1 1 th, resulted in momentary high residual chlorine readings as tabulated below..
February 10, 2011 1600 hrs 156 ppb 2000 hrs 171 ppb February 11,2011 0000 hrs 171 ppb 0400 hrs 171 ppb 0800 hrs 171 ppb For each monitored injection cycle, the high readings occurred only during the beginning of each 20-minute scheduled treatment, then residual chlorine readings returned to normal expected levels at the 001 Outfall for the remainder of each respective cycle.
Following discovery of the abnormally elevated monitor readings, chemical treatment was immediately shut down to both Units until the cause was evaluated. The event resulted from a failed diverter valve within the intake chemical injection system that selects between the 1-2 and 2-2 seawater conduits.
The valve failed such that it remained in a partially closed position during chemical treatments to the Unit 2 2-2 conduit, resulting in excessive sodium hypochiorite build-up in the upstream system piping.
3
Upon initiation of subsequent injection treatments to the Unit 1 1-2 conduit, the excess hypochlorite was quickly released from the system resulting in short-duration concentrated chemical spiking during the 1-2 conduit treatment cycles.
Following system evaluation and discovery of the mechanical problem, the chemical treatment system was restarted with dechlorination in use as a precaution, and treatment to the 2-2 conduit terminated until the diverter valve could be repaired or replaced. Injections to conduit 2-2 were not restarted until the valve was replaced and verified fully operational on February 17, 2011.
The five high readings exceeded the California Ocean Plan calculated effluent limit of 89 ppb (ug/l) for 20-minute continuous treatment cycles. The event however did not result in an exceedance of the DCPP NPDES Permit Limit of 200 ppb (ug/l) Instantaneous Maximum for chlorine residual at Outfall 001. CCRWQCB staff were notified of the high discharge residual chlorine values that exceeded the calculated Ocean Plan Limit on February 11, 2011.
- d. Bypasses On December 13, 2011 the Unit 2 turbine building sump overflowed directly to the seawater once-through cooling system for approximately 5-minutes. This was an unexpected bypass of the normal 001 F discharge path caused by an equipment failure. A pressure relief valve lifted on a regeneration water pump in the Unit 2 secondary condensate polisher buttress resulting in a rapid influx of relatively clean condensate system water into the turbine building sump. The estimated volume of water released directly overboard was a maximum of 600 gallons. Regional Staff were notified of the pathway 001F bypass event at 15:20 on 12/13/11, within the required 24-hour period. Three samples of the sump contents were analyzed for total suspended solids (TSS) and one sample was analyzed for oil and grease (O&G). The average analytical result for TSS was 41 mg/I, below the daily maximum limit of 100 mg/I. The analytical result for O&G was 8.3 mag/L, also below the daily maximum limit of 20 mg/L. Therefore, no pathway discharge permit concentration exceedences occurred due to this event.
B. Monitoring of Receiving Water
- 1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2011 under the Receiving Water Monitoring Program (RWMP) as requested in a letter from the Central Coast Regional Water Quality Control Board (CCRWQCB) dated December 9, 1998, and as detailed in a letter from PG&E dated January 8, 1999 (DCL-99-503). This program includes tasks from the Ecological Monitoring Program (EMP) with additional stations and increased sampling frequencies. This program replaces the EMP and the Thermal Effects Monitoring Program (TEMP). Several one-year-only tasks outlined in the above letters were completed in 1999 and were not requested to be performed in 2011. Results of 2010 RWMP data were submitted to the CCRWQCB on May 2, 2011. A table in Appendix 4 summarizes requirements and completed monitoring tasks for 2011.
- 2. In Situ Bioassay Results of the Mussel Watch Program are reported to the CCRWQCB directly by the California Department of Fish and Game in the agency's periodic report for this program.
4
C. Sodium Bromide Treatment Program DCPP the continuedWater Circulating its integrated sodium The System (CWS). bromide and "foul treatment release program coating" consists strategy of six to control 20-minute macrofouling injections in (at four hour intervals) of a blend of generic sodium bromide and sodium hypochiorite into DCPP's seawater intake conduits. Each injection attempts to achieve a target concentration of 200 parts per billion (ppb) Total Residual Oxidant (TRO) at the inlet waterbox of the main condensers. Discharge TRO, measured at the plant outfall, remained below NPDES limitations. Typically, discharge values were between 20 ppb and 50 ppb. In conjunction with the chemical treatment, untreated portions of the cooling water system were previously painted with a non-toxic "foul release coating" to reduce or prevent attachment of fouling organisms.
Both conduits of Unit 1 were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day throughout 2011 with brief interruptions in mid-February, May, July, early September, and December for maintenance activities. The September interruption was due to a scheduled Unit 1 seawater tunnel cleaning.
Both Unit 2 conduits were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day throughout 2011. Brief interruptions occurred in mid-February due to an injection system equipment failure related issue, and in March due to planned maintenance activities. Near the end of April injections were shut down entirely in preparation for the 2R16 refueling outage. Simultaneous injections of sodium bromide and sodium hypochlorite were reinitiated near the end of May when Unit 2 circulating water pumps were restarted. These simultaneous injections continued through the remainder of 2011, with brief interruptions in July and December due to planned equipment maintenance activities.
5
Annual Discharge Monitoring Report APPENDIX I DIABLO CANYON POWER PLANT NPDES DISCHARGE POINTS DISCHARGE NUMBER DESCRIPTION 001 Once-Though Cooling Water 001 A Firewater Systems 001 B Auxiliary Salt Water Cooling System 001 C Discharge Deleted 001 D Liquid Radioactive Waste Treatment System 001 E Service Cooling Water System 001 F Turbine Building Sump 001 G Make-Up Water System Waste Effluent 001 H Condensate Demineralizer Regenerant 001 I Seawater Evaporator Blowdown 001 J Condensate Pumps Discharge Header Overboard 001 K* Condenser Tube Sheet Leak Detection
_________________________Dump Tank Overboard 001 L Steam Generator Blowdown 001 M -Wastewater Holding and Treatment System 001 N Sanitary Wastewater Treatment System 001 P Seawater Reverse Osmosis System Blowdown 002 Intake Structure Building Floor Drains 003 Intake Screen Wash 004 Bio Lab and Storm Water Runoff 005, 008, 009, 013, 014, 015 Yard Storm Drains 006, 007, 010, 011, 012 Storm Water Runoff 016 Bio Lab Seawater Supply Pump Valve
_________________________Drain 017 Seawater Reverse Osmosis System
________________________Blowdown Drain
Annual Discharge Monitoring Report APPENDIX 2 TABULAR SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 TEMPERATURE (DEG F) FLOW (-MGD)
EFFLUENT DELTA T INFLUENT Month high low avg high low avg high avg hi~gh low avg JAN 54.0 52.6 53.2 72.6 71.3 71.9 18.8 18.7 2486 2486 2486 FEB 54.2 52.2 53.4 72.9 71.0 72.1 18.8 18.7 2486 2486 2486 MAR 53.2 4,9.1 51.1 71.9 60.4 68.7 19.1 17.6 2486 1862 2445 APR 52.5 48.6 50.1 71.2 66.4 68.8 19.2 18.7 2486 2356 2482 MAY 52.9 48.9 50.2 72.4 64.2 69.1 19.6 18.9 1862 1239 1290 JUN 53.2 48.6 51.0 72.3 59.0 68.5 19.2 17.0 2486 1862 2431 JUL 56.1 51.3 53.9 75.0 70.4 73.0 19.4 19.1 2486 2486 2486 AUG 55.6 51.8 53.5 74.7 71.2 72.8 19.7 19.3 2486 2486 2486 SEP 58.1 52.7 55.9 76.8 69.6 74.3 19.9 18.5 2486 1509 2395 OCT 57.5 53.8 55.6 76.4 71.5 74.2 19.0 18.6 2486 2027 2471 NOV 57.1 54.1 55.6 75.5 72.1 73.9 18.6 18.3 2486 2188 2476 DEC 56.1 53.5 55.2 74.6 71.6 73.6 18.8 18.4 2486 2486 2486 limit: -22 2760 The Influent and Effluent "high" and "low" temperture values correspond to the highest and lowest daily average value for that month. The Influent high and low temperadture does not necessarily correspond to the same day as the Effluent high and low temperature for that month. The "avg" temperature for Infiuent and Effluent is the average for the entire month. The Monthly Delta T "high" is the highest Delta T for a day of the month hased on daily average Influent and Effluent temperature values. The "Avg" temperature is calculated from Influent and Effluent monthly avg values.
DISCHARGE 001 TOTAL RESIDUAL TOTAL CHLORINE CHLORINE (daily max. ug/!) USED (lbs/day)
Month high low avg high low avg JAN 49 27 36 475 418 433 FEB 171 <10 27 475 259 430 MAR 54 14 32 504 300 418 APR 36 17 28 360 202 346 MAY 54 <13 22 216 134 194 JUN 45 16 , 31 418 274 381 JUL 28 <10 14 518 336 475 AUG 31 10 20 576 504 554 SEP 33 <7 17 691 317 591 OCT 43 <10 26 691 516 623 NOV 39 12 19 648 619 633 DEC 37 16 30 713 517 616 Note: The residual chlorine limits in Permit CA0003751, Order 90-09, is an instantaneous max of 200 ug/l, and includes a time-based limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.
Page 1lof 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/1)
CHROMIUM COPPER NICKEL *ZINC Month Influent Effluent Influent Efflucnt Influent Effluent Influent Effluent JAN ND(S) ND(5) DNQ(6) ND(5) 11 13 ND(5) ND(5)
FEB ND(5) ND(5) DNQ(8) DNQ(6) 11 14 DNQ(6) ND(5)
MAR ND(S) ND(S) ND(5) ND(S) ND(5) DNQ(6) 14 DNQ(8)
APR ND(S) ND(5) ND(S) ND(S) ND(5) ND(S) 25 ND(5)
MAY ND(5) ND(S) ND(5) DNQ(6) 10 11 18 DNQ(7)
JUN ND(S) ND(5) DNQ(5) ND(5) 14 15 16 11 JUL ND(5) ND(5) ND(S) ND(5) ND(5) ND(S) DNQ(9) ND(S)
AUG ND(S) ND(S) ND(5) ND(5) ND(5) ND(5) ND(5) ND(5)
SEP ND(S) ND(5) ND(S) ND(5) ND(5) DNQ(7) ND(S) ND(5)
OCT ND(5) ND(S) ND(S) DNQ(6) 6 DNQ(7) ND(S) ND(5)
NOV ND(S) DNQ(6) ND(S) ND(S) 7 10 ND(S) ND(5)
DEC ND(S) ND(S) ND(S) ND(S) 7 DNQ(8) ND(S) ND(S) 6-month median limit: 10 -10 - 30 - 70 DISCHARGE 001 VARIOUS ANNUAL ANALYSES (monthly avg. ug/i) 6-Mo. Med.
Effluent Parameter Influent Effluent Limit Arsenic 1.50 1.51 30 Cadmium 0.041 0.044 10 Cyanide ND(3) ND(3) 30 Lead DNQ(0.012) 0.020 10 Mercury DNQ(0.00037) DNQ(0.00034) 0.2 Silver DNQ(0.007) DNQ(0.008) 2.9 Titanium 3.1 2.2 none
- Phenolic Compounds ND(3.031) ND(3.031) 1S0 (non-chlorinated)
- Phenolic Cmpds ND(0.567) ND(0.567), 10 (chlorinated)
- PCB's ND(0.0658) DNQ(0.0658) none
- Results for analysis of 9 target compounds. The sum of the 9 detection limits is 8.42.
- Results for analysis of 6 target compounds. The sum of the 6 detection limits is 2.02.
- Detection limits shown arc the sum of individual detection limits for 7 target compounds.
DISCHARGE 001 AMMONIA (as N) (ug/i)
Month Influent Effluent JAN ND(50) ND(50)
FEB MAR APR DNQ(50) DNQ(50)
MAY JUN JUL 77 85 AUG SEP OCT ND(50) ND(50)
NOV DEC 6-month median limit: 3,060 Page2 of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)
Discharge: 001 002 003 004 001P Month Influent Effluent
.JAN 7.9 7.9 7.9 7.9 8.0 7.8 FEB 8.1 8.1 8.1 8.0 8.1 7.8 MAR 7.7 7.7 8.1 8.0 8.1 7.8 APR 7.8 7.9 7.9 7.7 8.0 7.7 MAY 7.8 7.7 7.9 7.8 7.8 7.7 JUN 7.8 7.8 7.9 7.8 7.9 7.8 JUL 8.1 8.1 8.1 8.0 8.0 7.8 AUG 8.0 8.0 7.9 7.9 8.0 7.9 SEP 7.8 7.8 8.0 8.0 8.0 7.9 OCT 7.7 7.8 7.9 7.8 7.8 '7.7 NOV 8.1 8.1 7.9 7.8 8.0 7.9 DEC 8.1 8.1 8.4 8.4 8.1 7.6 DISCHARGE 001F SUSPENDED GREASE & OIL (mg/I) SOLIDS (mg/I)
Month high avg high avg JAN ND(1.4) ND(1.4) DNQ(3) DNQ(3)
FEB ND(1.4) ND(I.4) DNQ(2) DNQ(2)
MAR ND(1.4) ND(1.4) DNQ(2) DNQ(2)
APR ND(1.4) ND(1.4) ND(2) ND(2)
- MAY DNQ(1.9) DNQ(1.9) 5 5 JUN ND(1.4) ND(1.4) DNQ(2). DNQ(2)
JUL ND(1.4) ND(1.4) DNQ(2) DNQ(2)
AUG ND(1.4) ND(I.4) ND(2) ND(2)
SEP DNQ(1.5) DNQ(1.5) DNQ(4) DNQ(4)
OCT ND(1.4) ND(1.4) ND(2) ND(2)
NOV ND(1.4) ND(1.4) ND(2) ND(2)~
DEC 8.3 DNO(4.2) 41 .10 limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Av~erage Limits.
DISCHARGE 001N (Monthly Summary of Weekly Data)
SUSPENDED SETTLEABLE GREASE & OIL (mag/l) SOLIDS (mg/I) SOLIDS (mllI)
Month high low avg high low avg high low avg JAN DNQ(1.4) ND(1.4) DNQ(1.4) 10 DNQ(3) 6 ND(0.1) ND(0.1) ND(0.1)
FEB* DNQ(1.6) ND(1.4) DNQ(1.4) 25 - 9 19 ND(0.1) ND(0.1) ND(0.1)
MAR 6.7 DNQ(1.4) <5.0 29 12 19 ND(0.1) ND(0.1) ND(O.1)
APR 6.6 DNQ(2.8) <5.0 40 9 22 ND(0.1) ND(0.1) ND(0.1)
MAY DNQ(3.4) DNQ(1.4) DNQ(1.4) 20 9 14 ND(0.1) ND(0.1) ND(0.1)
JUN 6.0 DNQ(2.8) <5.0 28 8 13 ND(0.1) ND(0.1) ND(0.1)
JUL DNQ(3.1) ND(1.4) DNQ(1.4) 13 5 10 ND(0.1) ND(0.1) NO(0.1)
.AUG DNQ(2.0) ND(1.4) *DNQ(1.4) 13 8 10 ND(0.1) *ND(0.1) ND(0.1)
SEP DNQ(2.0) ND(1.4) DNQ(1.4) 17 ND(3) 11 ND(0.1) ND(0.1) ND(0.1)
OCT DNQ(3.7) DNQ(1.4) DNQ(2.0) 15 6 11 ND(0.1) ND(0.1) ND(0.1)
NOV DNQ(1.4) DNQ(1.4) DNQ(1.4) 9 5 7 ND(0.1) ND(0.1) ND(0.1)
DEC DNO(1.4) DNO(1.4) DNO(1.4) 9 5 7 ND(0.1D ND(0.1) ND(0.1l limit: 20 -15 * -- 60 3.0 -1.0 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
Page3of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H 001L 001F Month Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu JAN FEB MAR ND)(S) ND(5) ND(S) ' 14 ND(5) ND(S) 15 36 ND(5) ND(5) ND(S) ND(S) ND(5) ND)(S) ND(5) 13 APR MAY JUN DNQ(8) ND(S) DNQ(9) ND(5) <10 ND(5) 19 52 DNQ(9) ND(5) ND(5) ND(5) 20 ND(S) ND(5) 11 JUL AUG SEP ND(S) ND(5) DNQ(8) DNQ(9) ND(S) ND(S) 23 45 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) 34 OCT NOV DEC ND(S) ND(S) 10 20 ND(S) ND(S) 14 32 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) '13 limit: none Note: 001D, 001H and 001L analyses performed on quarterly composites.
001F analyses performed quarterly on a composite of weekly samples.
DISCHARGE 001D, H, L, F, METALS (avg. ug/1) 001D 001 H 001L 001F Month Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn JAN FEB MAR DNQ(0.12) DNQ(5) ND(S) 108 DNQ(0.06) 15 12 14 ND(0.OS) ND(S) ND(S) <10 ND(0.0S) DNQ(7) DNQ(8) 43 APR MAY JUN ND(0.060) DNQ(7) ND(S) 114 ND(0.060) 16 13 21 ND(0.060) ND(S) ND(S) ND(S) ND(0.060) 15 DNQ(9) 23 JUL AUG SEP 0.41 DNQ(7) ND(S) 584 DNQ(0.14) 15 12 12 DNQ(0.077) ND(S) ND(S) ND(S) ND(0.060) 11 ND(S) 19 OCT NOV DEC ND(0.050) DNQ(7) ND(S) 61 ND(0.050) 12 <10 DNQ(9) ND(0.050) ND(S) ND(S) ND(S) ND(0.050) DNQ(8) ND(S) 53 limit: none Note: 001D, 001H and 001L analyses performed on quarterly composites.
001F analyses performed quarterly on a composite of weekly samples.
Page4of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (mg/I)
Month 001D* 001G 001H 001I 001J 001K 001L 001M 001P 002 003 JAN <5 ND(2,) ND(2) ND(2) 16 ND(2) 6 FEB <5 ND(2) ND(2) ND(2) 7 DNQ(2) DNQ(3)
MAR <5 ND(2) DNQ(2) ND(2) ND(2) DNQ(4) 20 DNQ(3) DNQ(2)
APR <5 ND(2) DNQ(2) ND(2) -24 13 23 MAY <5 ND(2) DNQ(4) ND(2) NO(2) <5 DNQ(3) 31 JUN '<5 ND(2) ND(2) ND(2) ND(2) <5 DNQ(2) DNQ(2)
JUL 8 ND(2) ND(2) ND(2) 9 8 7 AUG <5 ND(2) ND(2) ND(2) DNQ(2) ND(2) ND(2) DNQ(3)
SEP <5 ND(2) ND(2) ND(2) <5 ND(2) DNQ(2) DNQ(3)
OCT <5 ND(2) DNQ(2) ND(2) ND(2) 8 <5 6 NOV <5 ND(2) ND(2) ND(2) 9 DNQ(2) 5 DEC 16 DNQ(2) ND(2) ND(2) <5 ND(2) DNQ(3)
Limit: 30 30 30 30 30 30 30 30 30 30
- Discharges from 001D are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 001I and 001K during 2011.
Blank spots for other discharge points indicate that no discharge occurred during that particular month.
QUARTERLY GREASE & OIL Averages by Month (mag/I)
Month 001D* 001G 001H 001I 001J 001K 001L 001M 001P 002 003 004 JAN DNQ(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
FEB* DNQ(4.0)
MAR 5.5 - ND(1.4) ND(1.4)
APR DNQ(1.7) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
MAY DNQ(3.1) ND(1.4) ND(1.4)
JUN 7.0 ND(1.4)
JUL <5 ND(!.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
AUG <5 DNQ(1.4)
SEP DNQ(3.2) ND(1.4)
OCT <5 ND(1.4) ND(1.4) ND(i.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
NOV DNQ(2.3)
DEC ND(1.4) ND(1.4)
Limit: 15 15 15 15 15 15 15 15 15 15 15 15
- Discharges from 001D are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K during 2011.
Page 5 of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tu2 and tue)
ACUTE Test 6-Month Test Month Resnlt Median Result JAN 0.00 0.00 1.0 FEB MAR APR 0.00 0.00 1.0 MAY JUN JUL 0.00 0.00 1.0 AUG SEP OCT NOV DEC 0.00 0.00 1.0 6-month median limit: 0.26 5.1
- This parameter is monitored for the State Ocean Plan instead of the NPDES Permit. A value of 1.0 indicates no chronic toxicity.
DISCHARGE 001N ANNUAL ANALYSES Sludge Parameter Result Limit Percent Moisture 90.0% None Total Kjeldahil Nitrogen 940 mg/kg None Ammonia (N) 55 mg/kg None Nitrate (N) 5.7 mg/kg None Total Phosphorus 170 mg/kg None pH. 7.0 None Oil and Grease DNQ(4.9) mg/kg None Boron DNQ(9.2) mg/kg None Cadmium ND(0.25) mg/kg lOX STLC*
Copper DNQ(4.9) mg/kg 10 X STLC Chromium ND(0.88) mg/kg loX STLC Lead ND(0.15) mg/kg loX STLC Nickel ND(0.41) mg/kg loX STLC Mercury ND(0.090) mg/kg loX STLC Zinc DNQ(11) mg/kg 10OX STLC Volume 0l71 fnn* NNnni*
Note: Annual samples were collected in October.
- STLC = Soluble Threshold Limit Concentration Page 6 of 6
Annual Discharge Monitoring Report APPENDIX 3 GRAPHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT 0
Temperature ( F) 90.0 ,
80.0 70.0-1 60.0 S50.0 S40.0 High 30.0+/-
20.0+
10.0 L Avrag 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 DISCHARGE 001 EFFLUENT 0
Temperature ( F) 90.0T 80.0 70.0 60.0
'~50.0 2~40.0 30.0+ @High
+Average 20.0+
4$----Low 10.0 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Page 1lof 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow (MGD) 3000 25O00 2000-
.21500o m
.2 1000o 4Averagej 500 -
01 I I I I I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 DISCHARGE 001 EFFLUENT 0
Monthly Delta T ( F) 25 -
.5.
20 -
S15-S10-
@ Limit
@High
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Total Chlorine Residual, ug/1 180 160 *Average 140 *o 120 e100o 640 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the reporting limit.
DISCHARGE 001 Total Chlorine Used, pounds per day 800-700-600
- 500-200
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Copper (monthly average, ug/l) 12T 10 I * * * * * * *-* "* *-*
-4'- Permit Limit and Reporting Limit i SInfluent 8 -
4EffluentI
~g61 4-2-
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit (the most conservative limit) is plotted on this chart (this is also the analytical reporting limit).
The daily maximum limit for Copper is 50 ng/I.
DISCHARGE 001 Nickel (monthly average, ug/l)l 35 30:I U Discharge Permit Limit 25 -hlnfnuent
--4,-Effiueni!
-- ** mAnalytical Reporting Limit 20+
15 q 10 x 5
0 10 10 10 10 10 10 10 10 10 10 10 10 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit (the most conservative limit) is plotted on this chart.
The daily maximum limit for Nickel is 100 ug/I.
Page4ofl15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zinc (monthly average, ug/i) 80 70 60 U*Discharge Permit Limit L Influsent 50 "'-' Effluent
"'-'Analytical Reporting Limit i* 40 30 20 10 01 I I I U U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001 Chromium (monthly average, ug/l) 12T 10:
U Permit Limit and Reparting Limit 8 -a-- lolisseul Effluent
=
4 2
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011!
Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit is plotted on this chart. The daily maximum limit for chromium is 40 ug/h.
The discharge permit limit and the analytical reporting limit are the same (10 ug/h).
Page 5 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 8.6 8.4 8.2 8.0 7.8 7.6 7.4 7.2 i JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Several data points on this chart overlap.
Discharge 001 Ammonia (as N, ug/l) 3500 3000 2500- U 6-Month Median Lim~it
- infiuent 2000 SEffiuen t
= 1500 1000 500 0;
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Influent and Effluent values overlap at three points on this plot.
Page 6of15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Oil & Grease (Maximum, mg/i) 25.0 20.0 15.0 no 10.0 5.0 0.0 t = I* f
- JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit. December's monthly average was below the monthly average limit.
DISCHARGE 001F Suspended Solids
- o (Maximum, mg/I) 12*V 100:
U-Daily Manimum Limit 80+/- -- -Monthly Average Limit 4 Sample Resolt (Maoimum)
-4"-Analytical Reporting Limit 60 40 3 3 3 3/
20+
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Maximum values are plotted. December's monthly average was below the monthly average limit.
Page 7 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 2
0"" T I I I TTI JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit.
High and average values overlap at four points on this plot.
70[ --4-AergI 50
- ~4o 30 20 2011 DISCHARGE 001N Settleable Solids (mi/l) 3.5 3:
2.5----DiyMimmLmt]
2 -~O.---Modhly Average LimitI 1.5 *Aveage 0.5 U, i i
- i l i JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN 2011 Note: Values plotted at zero were below the detection limit.
High, average, and low values overlap at twelve points on this plot.
Page8of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D QuarterlyMetals (ug/h) 25 20
- Cadmium ilver
[ *Chromium
- Copper I
15 10 5
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001D QuarterlyMetals (ug/1) 700 600
- Lead E[]Nickel Zinci i 5000
- 4001 3000 I
ecr 200 +
100-0 JAN FEB I
MAR APR MAY I
2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page9of15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Quarterly Metals (ug/I) 40T 35 1 30 - U Cadmium I Chromiuml 25+
20 15+
10-4 opeI 5-0 JAN FEB MAR 1, APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 00IF Quarterly Metals (ug/1) 50-lENickell[
40
- Lead I 30-20 4 10 I I
0* I U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 10 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001H Quarterly Metals (ug/l)
[]Silver 60 *Cadmium
- Chromium 50
- oper 40 se30 20 10 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 00111 Quarterly Metals (ug/l) 25-
- Nickel 20 4 U Lead
'5 +
10 -
5.-
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 11 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001L Quarterly Metals (ug/1) 20 18 16 I"7Siver~
- Cadmium 14
- Chromium 12
- Copper 8
6 4
2 0
JAN FEB MIAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001L Quarterly Metals (ug/1) 14 12 10 6 *Nickel U Lead 4
2 0
JAN FEB MAR APR MAY JUJN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 12 of15S
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS (Average, rag/I) 35 30 *. *.* *.* *
--- *-* m* " l l 1 --
- Monthly Average Limit 25
@001D S20
-- 41"- O01H 10 5-
/
o . -- * : = 7 -- -- -- a ------ m JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS (Average, mg/I) 35 30 25 U Monthly Average Limit 20
- "O-- 01L E15 -4001M 10+/-
5-0 Ot A A S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS (Average, mag/l) 35 no JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
There is no limit for discharge 003. Therefore the May 003 value of 31 does not exceed a limit.
Page 13 of15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (Average, mg/l) 12 001D 10 - O1 8 *Monthly Average Lim~it JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit. Less than values are plotted at the value.
QUARTERLY OIL & GREASE (Average, mg/I) 16-14
-001J 12- /001L
/001M 10
- Nl~onthly Average Limit 6+
4 2
0 U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit.
QUARTERLY OIL & GREASE (Average, mag/I) 16 U U U U U U U U U U U U 14 12 -snip 002 10
~003 004 6 *ManthIy Average Limit 2
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit.
Page 14 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY (6-Month Median) 6.0 5.0 -- - - -- -- -- -- -- -- -- --
"=4.0 l Chronic Bioassay Results
"~-0--6-mo. Median Acute Limit
.p3.0 -*- Acute Bioassay Results
.* "~-I- Chronic Limit S2.0 ""-4-Acute 6-month Median JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Page 15 ofl5s
Annual Discharge Monitoring Report APPENDIX 4
SUMMARY
OF RWMP MONITORING FOR 2011 RWMP 1st Survey 2nd Survey 3rd Survey 4th Survey SuyStations/ Completion Completion Completion Completion SuySurveys Stations/ Stations/ Stations/ Stations/
______________per Year Dates Dates Dates Dates Horizontal Band Transects 14 / 4x Mar 03 Jun 07 Sep 09 Dec 21 Vertical Band Transects 5/ 4x Mar 15 Jun 01 Aug 01 Dec 21 Benthic Stations 8/ 4x Feb 28 Jun 13 Aug 22 Nov 18 Fish Observation Transects 12 / 4x Apr 14 Jun 29 Sep 19 Dec 14 Bull Kelp Census */1lx n/a n/a n/a Oct 13 Temperature Monitoringl 24 / ** Jan-Mar Apr-Jun Jul-Sep Oct-Dec
- Diablo Cove census.
- Temperature measured throughout the year at 20 minute intervals (14 intertidal and 10 subtidal stations).
Pacific Gas and Electric Company Diablo Canyon Power Plant
- lcticCompany P.O. Box 56 Avila Beach, CA 93424 PG&E Letter DCL-2013-'506
[ ~ CIWQS ElectronicWebSubmission Application February 27, 2013 California Regional Water Quality Control Boar'd Central Coast Region Attn: Monitoring and Reporting Review Section 895 Aerovista, Suite #101 San Luis Obispo, CA 93401-7906 In accordance with Order 90-09, NPDES No. CA0003751, the 2012 Annual Report on Discharge Monitoring at Diablo Canyon Power Plant is provided. This letter and accompanying annual data summary tables and plots are attached to the CIWQS application submittal.
Facility Name: Faciity ame:Diablo Canyon Power Plant Address: .P.O. Box 56 Avila Beach, CA 93424 Contact Person: Bryan K. Cunningham Job
Title:
Supervisor, Environmental Operations Phone Number: (805) 545-4439 WDR/NPDES Order Number: Order No. 90-09, NPDES No. CA0003751 Type of Report: (check one) QUARTERLY ANNUAL 0] I[I Quarter: (check one): I st 2nd 3 rd 4th 0] 0] 0] 0]
Year: '2012 (Annual Reports for DCPP are Jan-Dec)
Violation(s) (Place an X by the appropriate choice): [] No 0] Yes Note:(there are no violations to report)
Reference "Review of Compliance Record and CorrectiveActions" Section
PG&E Letter CRWQCB DCL-201 Central 3-506 Coast Region February 27, 2013 Page 2 If Yes is marked (complete a-g):
a) Parameter(s) in Violation:
b) Section(s) of WDRINPDES Violated:
c) Reported Value(s) d) WDR/NPDES Limit/Condition:
e) Dates of Violation(s)
(reference page of report/data sheet):
f) Explanation of Cause(s): (If "YES", see overview section of attached report)
(attach additional information as needed) g) Corrective Action(s): (If "YES", see overview section of attached report)
(attach additional information as needed)
PG&E Letter DCL-2013-506 CRWQCB Central Coast Region February 27, 2013 Page 3 I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly .responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. The results of the influent and effluent monitoring presented are the observed results of the measurements and analyses required by the monitoring program, and is neither an assertion of the adequacy of anY instrument reading or analytical result, noran endorsement of the appropriateness of any analytical or measurement procedure. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
If you have any questions or concerns, or require additional information, please contact Bryan Cunningham at (805) 545-4439.
- Sincerely, Name: Kenneth W. Cortese
Title:
Manager, Chemistry and Environmental Operations- Diablo Canyon Power Plant 201 3506/j1kbkc
PG&E Letter DCL-2013-506 CRWQCB Central Coast Region February 27, 2013 Page 4 cc: PDF Formatted Copy of ClWQS Application Submittal:
Regional Administrator U.S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 Hardcopy Print-Out of CIWQS Application Submittal:
U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-0001 Thomas Hipschman Senior Resident Inspector U.S. Nuclear Regulatory Commission Diablo Canyon Power Plant 104/5
CIWQS Web Application Submittal Print Out and Attached Supporting Documents Summary: Annual eSMR SMR (PDF Report MONNPDES ) report for 2012 Summary: Annual SMR ( MONNPDES ) report for 2012 submitted by Kenneth Cortese(No Title) on 02/28/2013.
Facility Name: PG&E DIABLO CANYON POWER PLANT Order Number: R3-1990-0009 Waterboard Office: Region 3 - Central Coast Case Worker: Peter Von Langen Report Effective Dates: 01/01/2012 - 12/31/2012 No Discharge Periods
¶~
LSiabIo IDlablo
~Name~
M-UUi M-UUI
4
~ . ~ Wescriptlnn: ;~..... 4:,
5
-~ Dates~i:~ 4 . ~ ~ Comment ~ ~
L*
Jii~ablo M-00lDL Diablo M-001F Diablo M-001G Diablo M-001H Diablo M-001 1 01/01/2012 - 12/31/2012 ______________________________________
D~iablo M-00lJ Diablo M-001 K 01/01/2012 - 12/31/2012 laiabl M-001IL IDiablo M-001M IDiablo M-00]IN Diablo M-001P Diablo M-002 1Diablo M-003 D~iablo M-004 Diablo M-005
'Diablo M-008_____________________________________________
fliablo M-009 D*iablo M-013 Diablo M-0 I5 Diablo M-016 0l/01/2012 -12/31/2012__________________________________________
jaliMablo__________M-017_______ 0/0/011/01/011/2012___________-_____12/_______1/20_________2_
t'iablo M-INF__________________________ _____________________________ ______
Self-Determined Violations No Violations Entered Attachments Attachment I - 2012 DCPP Annual Report Overview Section.pdf 2012 Annual Summary Report on Discharge 02/27/2013 Monitoring at Diablo Canyon Power Plant Attachment 2 -2012 DCPP Annual Rpt Appendix-I NPDES DCPP NPDES Discharge Points Table 02/27/2013 Discharge Points.pdfl Attachment 3 -2012 DCPP' Annual Rpt Appendix-2 Tabular Tabular Summaries of tnftuent and Effluent 02/27/2013 Summaries of Monitoring.pdf Monitoring Attachment 4 -2012 DCPP Annual Rpt Appendix-3 Graphical Graphical Summaries of tnfluent and Effluent . 02/27/201 3 Summaries of Monitoring.pdf Monitoring Attachment 5 -2012 DCP Annual Rpt Appendix:-4 Summary of Summary of Receiving Water Monitoring 02/27/2013 RWMP Monitoring.pdf Program (RWMP) Activities ___________
Cover Letter (Uploaded File)
- GE DCL20 13506 2012 NPDES Annual Discharge Monitoring Report.pdfl 20 13-02-27 16:45:36.0 702040 bytes
Data Summary Analytical Results No Analytical Data Measurements Available / Reported Calculated Values
.Loctatini: *Parqam'eter "-C..* Calcuiaioln.Tye Smle. .-Anaily's:la Quahlfler. [Reaut.* ,Unita:,.m.M~etbo'd Milnimum. Reporing* *e~yenS*QA~ * ::* ~~~ts r Dta'Souree*
No Calculated Data Measurements Available!/ Reported Certlifcate I certify under penalty of law that all data submitted, including attachments, were prepared under my direction in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of a fine or imprisonment, for knowing violations. I certify that I am Kenneth Cortese and am authorized to submit this report on behalf of PG&E DIABLO CANYON POWER PLANT. I understand that I am submitting a Annual SMR ( MONNPDES )
report for 2012 and I understand that data submitted in this report can be used by authorized agencies for water quality management related analyses and enforcement actions, if required. I certify that I have not violated any term in my Electronic Signature Agreement~and that I am otherwise without any reason to believe that the confidentiality of my password and challenge question answers have been compromised now or at any time prior to this submission. I understand that this attestation of fact pertains to the implementation, oversight, and enforcement of a federal environmental program and must be tine to the best of my knowledge.
Name: Kenneth Cortese
Title:
No Title
ANNUAL
SUMMARY
REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2012
PG&E Letter No. DCL-2013-506 2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS PAGE OVERVIEW 1
SUMMARY
OF MONITORING PROGRAM 1 A. Monitoring of Plant Influent and Effluent* I
- 1. Monitoring Data 1
- 2. Facility Operating and Maintenance Manual 1
- 3. Laboratories Used to Monitor Compliance 2
- 4. Review Of Compliance Record and Corrective Actions , ,2 B. Monitoring of Receiving Water '5
- 1. Ecological Studies at Diablo Canyon 5
- 2. In-Situ Bioassay 5 C. Sodium Bromide Treatment Program 5 D. Errata .5 APPENDICES Appendix 1- NPDES Discharge Points Appendix 2- Tabular Summaries of Influent and Effluent Monitoring Appendix 3- Graphical Summaries, of Influent and Effluent Monitoring Appendix 4- Summary of RWMP Monitoring for 2012
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant OVERVIEW This annual summary report follows the format used in quarterly monitoring reports. Analytical results below the respective analytical detection limit (ND or non-detect) are plotted as a "zero" value in accordance with ELAP guidance. Results between the analytical detection limit and reporting (quantitation) limits are plotted at the value and shown as 'DNO' in the tabular summaries as is done for CIWQS reports. Less-than results are typically reported to express an average of values that include non-detects and at least one positive result.
These less-than results are plotted conservatively at the value. During 2012, discharges occurred from all discharge paths except 0011I, 001K, 016, and 017.
California Ocean Plan Table B substances that were not analyzed for have not been added to the discharge*..
stream. The substances listed in Table B in the California Ocean Plan were each analyzed for and reported in the permit renewal application and application updates for Diablo Canyon Power Plant (DCPP) submitted in October 1994, January 2001, and April 2011. There have been no changes in activities conducted at the plant that would have significantly affected the results previously reported in the above referenced documents.
SUMMARY
OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent
- 1. Monitoring Data
- a. Appendix 1 provides a list of discharge path names for ease of reference. Appendix 2 contains monitoring data in tabular form. Appendix 3 contains monitoring data in graphical form.
- b. Annual oil and grease analyses were performed in October on StormwaterlYard Drain Discharges 005, 008, 009, 013, and 015. Results are listed below. No discharges that resulted in adequate sample quantities occurred from pathway 016, and no discharge occurred from pathway 017 during 2012.
005 non-detect - ND(1 .4 mg/I) 008 non-detect - ND(1 .4 mg/I) 009 Value. below reporting quantity - DNQ(2.3 mag/I) 013 non-detect - ND(1 .4 mg/I) 015 Value below reporting quantity - DNQ(2.5 mg/I)
C. In October, Discharge 001 D (Liquid Radioactive Waste Treatment System) annual grab samples for lithium, boron, and hydrazine were collected and analyzed. The results were 0.076 mag/I, 804 mg/I, and DNQ(0.002) mg/I, respectively.
- 2. Facility Operating and Maintenance Manual Pacific Gas and Electric Company (PG&E) maintains a multiple volume Plant Manual at DCPP that c:ontains procedures used for operation and maintenance activities at the plant, including those activities that relate to wastewater handling, treatment, sampling, analysis and discharge.
Plant procedures are prepared and reviewed by DCPP Staff and approved by DCPP Management. The facility conducts biennial internal audits that review NPDES procedures contained in the plant manual.
Ongoing reviews of plant procedures are conducted to assure that the manual remains valid, current, and complete for the facility.
1
- 3. Laboratories Used to Monitor Compliance The following laboratories were used during 2012 for monitoring compliance. The laboratories are certified by appropriate agencies for the tests/analyses performed. As part of the on-going annual certification process, these laboratories take part in annual performance evaluation testing.
- a. PG&E Chemistry Laboratory, DCPP, Avila Beach, California (EPA Lab # CA01036)
- b. Aquatic Bioassay Consulting Laboratories, Ventura, California (EPA Lab # CA01907)
- c. ALS Environmental (formerly Columbia Analytical Services), Kelso, Washington (EPA Lab #
WA00035)
- e. Abalone Coast Analytical, San Luis Obispo, California (EPA Lab # CA02661)
- f. Oilfield Environmental and Compliance, Santa Maria, California (EPA Lab # CA02438)
- g. E. S. Babcock & Sons, Inc., Environmental Laboratories, Riverside, California (EPA Lab # CA00102)
- h. BSK Associates, Fresno, California (EPA Lab # CA00079)
- 4. Review of Compliance Record and Corrective Actions
- a. Circulating Water Pump Chlorination/Bromination Monitoring The 2012 quarterly NPDES reports discuss chlorination cycles when discharge monitoring was interrupted. These events are listed below with brief descriptions of the cause and respective corrective action. When these monitoring interruptions occurred, engineering evaluations (as approved by the CCRWQCB January 13, 1994; PG&E Letter No. DCL-94-002) were performed.
Detailed descriptions of these evaluations are included in the quarterly reports. Evaluations concluded that discharge chlorine limits were not exceeded during these events.
Date J1Chlorination Monitoring Cycle11 Interruptions Cause Corrective Action 01 /16/12 to Unit 1 & 2 Cross-tie between monitor Monitor sample line cross-tie 01/17/12 11 Readings sample lines left open valves closed 06/07/12 to Unit 2 Discharge monitor quality check Mntrrclbae 06/13/12 36 Readings low out of tolerance _______________
09/19112 to Unit 2 092/2 7 edns Monitor reagent pump failed ,Reagent pump replaced
- b. Closed Cooling Water Releases During 2012, maintenance activities that required draining of closed cooling water systems were performed, and are summarized below. PG&E received concurrence from the CCRWQCB in response to letters dated July 19, 1995 (PG&E Letter DCL-95-1 56), May 23, 1996 (PG&E Letter DCL-96-522), and May 19, 1997 (PG&E Letter DCL-97-533) regarding the use of glutaraldehyde and isothiazolin to control microbiological growth and corrosion in DCPP's freshwater closed cooling water systems. Any drainage from these systems is discharged at a flow-rate such that the chronic toxicity level is below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.
2
The volumes of cooling water drained in 2012 from the component cooling water (COW), service cooling water (SOW), and intake cooling water (lOW) systems are presented below. The glutaraldehyde (Glut) and isothiazoline (Iso) concentrations presented in the table are system concentrations, not concentrations at the point of discharge to receiving water.
VolumGlutTotal Oil & Rao Date System (glons)e (Glut so (mg/I] Suspended Grease Cmet
__galons__(mg/I)_.. Solids (mag/I) (mgfl) Cmet 01/04/12 Unit 1 SOW 12,000 < 50 5.4 < 2.0 < 1.4 Routine Maintenance 01/13/12 Unit 1 SOW 10 114 5.4 n/a n/a Routine Maintenance 01/113/12 Unit 2 S0W 10 115 4.0 n/a n/a Routine Maintenance 01125/12 Unit 2 SOW 57 < 50 4.0 n/a n/a Routine Maintenance 02/08/12 Unit 2 SCW 30 111 5.2 n/a n/a Routine Maintenance 02/12/12 ' Unit 11ICW 10 112 0.7 n/a n/a Routine Maintenance 03/06/12 Unit 2 SOW. 33,200 < 50 5.8 < 2.0 < 1.4 Routine Maintenance 03/13/12 Unit 2 S0W 550 < 50 5.8 n/a n/a Routine Maintenance 03/1 5/12 Unit 2 SOW 70 < 50 5.8 n/a n/a Routine Maintenance 03/26/12 Unit 2 lOW 9 148 0.7 n/a n/a Routine Maintenance 04/16/12 Unit 1 lCW 10 65 2.4 n/a n/a Routine Maintenance 04/25/12 Unit I SOW 9,500 86 3.4 n/a n/a Routine Maintenance 05/19/12 Unit I COW 181,500 125 0.0 < 2.0 1.5 Routine Maintenance 06/11/12 Unit 1 lOW 15 64 4.5 n/a n/a Routine Maintenance 06/26/12 Unit 1 COW 3,200 177 0.0 < 2.0 < 1.4 Routine Maintenance 06/28/12 Unit 2 SOW 33,200 < 50 4.7 7.2 < 1.4 Routine Maintenance 08/05/12 Unit 1 SOW 10 < 50 4.1 n/a n/a Routine Maintenance 08/14/12 Unit 1 SOW 33,500 < 50 4.1 3.5 < 1.4 Routine Maintenance 12/04/12 Unit 2 lOW 3,300 63 2.5 4.2 n/a Routine Maintenance 12/19/12 Unit I lCW 3,400 < 50 5.8 n/a n/a Routine Maintenance
- c. Exceedances None.
- d. Bypasses
- 1. On April 30, 2012, it was discovered that operator action resulted in a bypass of normal discharge pathway 001 F. On April 25th at approximately 23:00, during non-routine plant conditions, operators routed freshwater originating from the plant fire water system to outfall via the clean side of the turbine building sump. Normal routing of this discharge is to the dirty side of the turbine building sump, through the oily water separator system, then overboard. The bypass occurred during power plant recovery efforts caused by a loss of all main seawater circulator pumps, and subsequent forced outage of Unit 2 while Unit I was in a scheduled refueling outage.
Routing of the fire water to the clean side of the sump was determined to be inadvertent, as the operators did not intend to purposefully circumvent the normal 001 F permit flow path. At the beginning of the event an assumption had been made that staged hosing in the turbine building was routed to the dirty side of the sump system, when in fact it was routed to the clean side of the sump. It was later found that a verification/review of the configuration to insure appropriate routing before use had also not been completed.
3
Contributing factors to the inadvertent bypass included a significant amount of plant operator burdens during the period. The specific plant conditions experienced were non-routine, having never occurred prior in the operating history of the facility. The shutdown of all main seawater circulators, and subsequent operating unit trip, was due to an excessive influx of sea saips in the near shore coastal region, which adversely impacted the plant intake cove and intake systems.
Note: The plant auxiliary salt water system once-through cooling remained in continuous operation during the period.
Upon plant management discovery of the 001 F pathway bypass on April 30t', samples of the freshwater flow were obtained, and the bypass subsequently terminated. The samples indicted total suspended solids (TSS) of < 2.0 mg/L, conductivity of 126 uS/cm, a pH of 7.7, and a negative result for grease and oil using a camphor screening test. These results confirmed the quality of the freshwater from the plant fire water system was good, as is routinely expected from that resource, and that 001 Foutfall constituent limitations were most likely never challenged during the bypass period. Regional Board Staff (von Lan(*en) was notified via phone message of the bypass event following the initial discovery on April 30"'. In a follow-up phone conversation conducted on May 1st, the facility was directed to provide a description of the event, and any subsequent evaluation or actions, in the 2" quarter discharge self-monitoring report.
The estimated volume of freshwater routed directly to the clean side of the turbine building sump from April 2 51h to April 30* was 609,900 gallons, or approximately 144,000 gallons per day. Even though the event was linked to an off-normal and very rare plant condition, the facility is implementing corrective actions to reduce and/or eliminate the potential for event reoccurrence.
Relevant plant operating procedures were revised to more clearly outline operator actions and expectations in the event: of a similar situation, as well as to enhance the verification of equipment alignment prior to routing,water from secondary plant activities to the turbine building sump.
system.
- 2. On October 12, 2012, during routine shift inspections the Unit I turbine building sump was discovered overflowing from the clean-side standpipe directly to the once-though cooling system, and plant outfall. The cause was determined to be a loss of sump pump operation resulting in an inadvertent bypass of the normal discharge pathway which routes sump wastewater through the oily water separator (OWS) system prior to outfall. Samples of the overflow were taken. Analysis indicated total suspended solids and oil/grease levels were well below the NPDES limitations for discharge pathway 001 F. The overflow was estimated at a rate of 3 to 5 gallons per minute for an indeterminate period (exact time of pump function loss unknown), but which is approximated to be less than the period elapsed since the prior sump inspection; < 12-hours.
The loss of pump operations was determined to be caused by an.Out of tolerance liquid level indicator transducer. One function of the~level indicator is to stop pump operation when low liquid levels (near-empty) conditions exist within the sump. Output from the faulty transducer resulted in low level indications when, sump volume was actually at high levels. The transducer was recalibrated, and the turbine building sump level indicator and associated sump pumps were returned to normal operations.
Notification of the inadvertent 001 F pathway bypass was made to the Regional Water Quality Control Board on the same day, within the 24-hour reporting requirement. A follow-up communication was made on October 1 51h to provide analysis results, and request guidance on further. reporting of the event. Regional Board staff (von Langen) advised that the event and corrective actions be documented in the 4th quarter discharge self-monitoring report.
4
B. Monitoring of Receiving Water
- 1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2012 under the Receiving Water Monitoring Program (RWMP) as requested in a letter from the Central Coast Regional Water Quality Control Board (CCRWQCB) dated December 9, 1998, and as detailed in a letter from PG&E dated January 8, 1999 (DCL-99-503). This program includes tasks from the Ecological Monitoring Program (EMP) with additional stations and increased sampling frequencies. This program replaces the EMP and the Thermal Effects Monitoring Program (TEMP). Several one-year-only tasks outlined in the above letters were completed in 1999 and were not requested to be performed in 2012. Results of 2011 RWMP data were submitted to the CCRWQCB on April 27, 2012. A table in Appendix 4 summarizes requirements and completed monitoring tasks for 2012.
- 2. In Situ Bioassay Results of the Mussel Watch Program are reported to the CCRWQCB directly by the California Department of Fish and Game (CDF&G) in the agency's periodic report for this program.
C. Sodium Bromide Treatment Program DCPP continued its integrated sodium bromide and "foul release coating" strategy to control macrofouling in the Circulating Water System (CWS). The treatment program consists of six 20-minute injections (at four hour
- intervals) of a blend of generic sodium bromide and sodium hypochlorite into DCPP's seawater intake conduits. Each injection attempts to achieve a target concentration of 200 parts per billion (ppb) Total Residual Oxidant (TRO) at the inlet waterbox of the main condensers. Discharge TRO, measured at the plant outfall, remained below NPDES limitations. Typically, discharge values were between 20 ppb and 50 ppb. In conjunction with the chemical treatment, untreated portions of the cooling water system were previously painted with a non-toxic "foul release coating" to reduce or prevent attachment of fouling organisms.
- Both conduits of Unit I were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day through most of 2012. There were brief interruptions in January, February, March, and early April for system maintenance activities. Unit 1 injections were shut down in mid=April for the 1R17 refueling outage. Simultaneous injections were restarted in early June. There were additional brief interruptions in mid-June, November and December for chemical injection system maintenance, and conduit cleaning activities.
Both conduits of Unit 2 were treated with simultaneous injections of sodium bromide and sodium hypochlonte six times a day through most of 2012. There were brief interruptions in January and February for chemical injection system maintenance, and conduit cleaning activities. Additional brief interruptions also occurred in April due to a large influx of sea saips that necessitated shut down of Unit 2 main seawater circulating pumps;
.and in June, October, and November due to system maintenance activities.
D. Errata Two reporting errors have been identified in the electronic 4"' quarter 2012 discharge self-monitoring report (eSMR) that was submitted via CIWOS. The units for analysis results of Ammonia, Total (as N) at locations M-001 and M-INF (only) were incorrectly reported as p~g/L. The correct units for both these results are mg/L.
5
Annual Discharge Monitoring Report APPEN DIX I DIABLO CANYON POWER PLANT NPDES DISCHARGE POINTS DISCHARGE NUMBER DESCRIPTION 001 Once-Though Cooling Water 001 A Firewater Systems 001 B Auxiliary Salt Water Cooling System 001 C Dishare Deeted 001 D Liquid Radioactive Waste Treatment System 001 E Service Cooling Water System 001 F Turbine Building Sump 001 G Make-Up Water System Waste Effluent 001 H Condensate Demineralizer Regenerant 001 I Seawater Evaporator Blowdown 001 J Condensate Pumps Discharge Header Overboard 001 K Condenser Tube Sheet Leak Detection Dump Tank Overboard 001 L Steam Generator Blowdown 001 M Wastewater Holding and Treatment System 001 N Sanitary Wastewater Treatment 001 P Seawater Reverse Osmosis System Blowdown 002 Intake Structure Building Floor Drains 003 Intake Screen Wash 004 Bio Lab and Storm Water Runoff 005, 008, 009,,,013, 014, 015 Yard Storm Drains 006, 007, 010, 011, 012 Storm Water Runoff 016 Bio Lab Seawater Supply Pump Valve Drain 017 Seawater Reverse Osmosis System
______________________Blowdown Drain
Annual Discharge Monitoring Report APPENDIX 2 TABULAR SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 TEMPERATURE (DEG F) FLOW (MGD)
INFLUENT EFFLUENT DELTA T
- Month high low avg highi low avg* high avg high low avg JAN 55.6 52.5 54.1 74.4 71.5 73.0 19.4 18.9 2486 2486 2486 FEB 54.8 50.1 52.2 74.5 68.7 71.3 20.2 19.1 2486 1862 2400 MAR 53.1 49.0 50.8 72.1 71.8 74.1 18.9 18.5 2486 1509 2395 APR 52.6 48.4 50.2 71.1 53.5 65.9 19.4 15.7 2486 32 2045 MAY 52.2 48.7 50.2 69.9 66.5 67.9 18.0 17.7 1279 1279 1279 JUN 56.6 49.1 52.3 72.5 62.8 68.1 18.4 15.3 2486 1279 2081 JUL 55.9 50.7 53.0 74.1 68.9 71.3 18.4 18.2 2486 2486 2486 AUG 57.0 52.0 54.0 75.5 70.3 75.3 18.6 18.3 2486 2486 2486 SEP 57.9 53.9 55.6 76.6 71.8 74.1 18.9 18.5 2486 1509 2395 OCT 59.3 55.6 57.2 78.0 74.9 65.0 19.4 17.7 2486 2132 2449 NOV 58.6 55.0 57.3 77.9 73.6 76.2 20.6 19.0 2486 1862 2402 DEC 59.7 54.3 56.8 78.5 72.8 75.5 19.3 18.1 2486 1874 2371 limit: -- 22 2760 The lnfluent and Effluent "high" and "low" temperture values correspond to the highest and lowest daily average value for that month. The lnfluent high and low temperature does not necessarily correspond to the same day as the Effluent high and low temperature for that month. The "avg" temperature for lnfluent and Effluent is the average for the entire mouth. The Monthly Delta T "high" is the highest Delta T for a day of the month based on daily average Influesst and Effluent temperature values. The "avg" temperature is calculated from Influent and Effluent moathly avg values.
DISCHARGE 001 TOTAL RESIDUAL TOTAL CHLORINE CHLORINE (daily max. ug/I) USED (lbs/day)
Month higlh low avg high low avg JAN 54 31 '41 576 355 516 FEB 65 17 44 475 158 353 MAR 66 31 49 4*03 288 370 APR.* 63" *nla 41 374 *'n/a 256 MAY 89 <20 39 230 173 191 JUN 55 <10 25 518 173 390 JUL 32 <10 12 562 490 522 AUG 39 <10 24 662 562 581 SEP 44 <1 0 20 662 562 611 OCT 60 <10 30 734 494 "639 NOV 39 14 26 706 184, 583 DEC 66 18 47 677 346 503 Note: The residual chlorine limits in Permit CA0003751, Order 90-09, Is an instantaneous max of 200 ug/h, and includes a time-based limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.
- n/a value for low value in April for total residual chlorine & total chlorine use due to no system injections for one day.
Page1lof 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/h)
CHROMIUM COPPER NICKEL *ZINC Month lnfluent Effluent Influent Effluent lnfment Effluent lnfluent Effluent JAN ND(S) ND(S) ND(5) " ND(S) DNQ(S) DNQ(6) ND(S) ND(S)
FEB ND(5) ND(5) DNQ(6) DNQ(6) DNQ(6) DNQ(8) ND(S) DNQ(7)
MAR ND(5) ND(S) ND(S) ND(5) DNQ(6) DNQ(6) 24 DNQ(8)
APR ND(S) DNQ(6) ND(S) DNQ(7) DNQ(6) 10 13 DNQ(5)
MAY ND(S) ND(S) ND(5) DNQ(5) DNQ(7) DNQ(7) ND(S) ND(S)
JUN ND(S) ND(S) DNQ(6) ND(5) DNQ(7) DNQ(6) DNQ(5) ND(5)
JUL ND(S) ND(S) 'ND(5) .ND(5) DNQ(8) DNQ(8) ND(5) ND(S).
- AUG ND(S) ND(5) ND(5) ND(S) DNQ(8) DNQ(7) DNQ(7) ND(S)
SEP ND(S) ND(S) ND(S), ND(S), DNQ(6) DNQ(6) DNQ(6) ND(S)
- OCT ND(S) . ND(S) ND(5) ND(S) DNQ(9) DNQ(8) 21 DNQ(5)
NOV DNQ(5) ND(S) DNQ(8) DNQ(7) DNQ(7) DNQ(9) DNQ(7) ND(S)
SDEC DNQ(7). DNQ(7) DNQ(7) DNQ(6) DNQ(7) DNQ(7) 14 DNQ(S)
I I 6-month median limit: 10 - 10 - 30 - 70 VARIOUS DISCHARGE ANNUAL ANALYSES 001 (ughi) 6-Mo. Med.
Effluent Parameter in fluent Effluent Limit Arsenic 1.38 1.40 30 Cadmium 0.036 0.031 10 Cyanide ND(3) ND(3) 30 Lead 0.039 DNQ(0.0l5) 10 Mercury DNQ(0.00032) DNQ(0.00027) 0.2 Silver ND(0.004) ND(0.004) 2.9 Titanium ND(50.0) ND(S0.0) none
- Phenolic Compounds ND(3.031) ND(3.031) 150 (ann-chlorinated)
- Phenolic Compounds ND(0.567) ND(0.567) 10 (chlorinated)
- PCB's ND(0.0658) ND(0.0658) none
- Results for analysis of 9 target compounds. The sum of the 9 detection limits is 8.42.
SResults for analysis of 6 target compounds. The sum of the 6 detection limits is 2.02.
- Detection limits shown are the sum of individual detection limits for 7 target compounds.
DISCHARGE 001 AMMONIA (as N) (ug/I)
Month Influent Effluent JAN ND(50) DNQ(78)
FEB MAR APR DNQ(67) ND(S0)
MAY JUN JUL AUG 160 300 SEP OCT 86 DNQ(62)
NOV DEC 6-month median limit: 3,060 Page2of 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)
Discharge: 001 002 003 004 001P.
,Month lIntluent Effluent JAN 7.9 8.0 8.0 7.9 8.0 7.9 FEB 8.0 8.0 8.0 7.9 7.9 7.9 MAR 7.8 7.8 7.9 7.8 7.9 7.6 APR 7.7 7.8 7.8 7.7 7.7 7.6 MAY 8.0 8.0 8.0 8.0 8.0 7.7 JUN 7.9 7.9 7.9 7.9 7.9 7.7 JUL 7.9 7.9 7.9 ' 7.9 7.9 7.7 AUG 7.8 7.8 7.8 7.9 7.9 7.6 SEP 7.8 7.9 7.9 7.8 7.9 7.6
- OCT 7.8 7.9 8.0 8.0 .8.0 7.7 NOV 8.2 8.1 8.0 7.8 7.9 7.7 DEC 7.9 8.0 8.0 7.9 8.0 7.8 DISCHARGE 001F SUSPENDED GREASE & OI'L (mg/I) SOLIDS (mg/I)
Month high ave high ave JAN ND(1.4) ND(1.4) ND(2) ND(2)
FEB ND(I.4) ND(1.4) 7 7 MAR ND(1.4) ND(1.4) DNQ(2) DNQ(2)
APR ND(I.4) ND(1.4) DNQ(4) DNQ(4)
MAY ND(I.4) ND(1.4) ND(2) ND(2)
JUN ND(I.4) ND(I.4) DNQ(2) DNQ(2)
JUL ND(I.4) ND(I.4) ND(2) ND(2)
AUG ND(I.4) ND(I.4) DNQ(3) DNQ(3)
SEP ND(I.4) ND(I.4) ND(2) ND(2)
OCT ND(I.4) ND(lI4) DNQ(2) DNQ(2)
NOV ND(1.4) ND(1.4) DNQ(2) DNQ(2)
DEC ND(I.4) ND(1.4) DNQr2) DNO(21 limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
DISCHARGE O01N (Monthly Summary of Weekly Data)
SUSPENDED SETTLEABLE SOLIDS (mg/I) SOLIDS (millI)
GREASE & OIL (mg/I)
Month high low avg high low ave high low ave JAN <5.0 DNQ(1.4) <5.0 20 ND(3) 9 ND(0.1) ND(0.1) ND(0.1)
FEB 5.7 ND(1.4) *<5.0 75 9 27 ND(0.1) ND(0.1) ND(0.1)
MAR <5.0 N D(1.4) <5.0 26 5 12 ND(0.1) ND(0.1) ND(0.1)
APR DNQ(3.2) ND(1.4) DNQ(I.6) 95 10 34 ND(0.1) ND(0.I) ND(0.1)
MAY <5.0 ND(!l.4) <5.0 18 12 15 ND(0.1) ND(0.1) ND(0.1)
JUN DNQ(2.7) ND(I.4) DNQ(1.4) 14 4 8 ND(0.1) ND(0.1) ND(0.1)
JUL <5.0 ND(1.4) <5.0 12 ND(3) 7 ND(0.1) ND(0.i) ND(0.1)
AUG DNQ(I.4) ND(I.4) DNQ(l.4) 19 9 14 ND(0.1) ND(0.l) ND(0.I)
SEP 7.0 DNQ(1.6) <5.0 24 11! 15 ND(0.I) ' ND(0.1) ND(0.1)
OCT DNQ(2.8) DNQ(I.4) DNQ(I.8) 25 9 14 ND(0.1) ND(0.1) ND(0.1)
NOV <5.0 ND(I.4) <5.0 10 7 9 ND(0.1) ND(0.1) ND(0.I)
DEC <5.0 DNO(I.5') <5.0 15 ND(31 7 ND(0.1l NDt0.1) ND(0.I1 limit: 20 - 15 - - 60 3.0 - 1.0 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
Page3of 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H COIL C01F Month An Cd Cr Cu An Cd Cr Cu An Cd Cr Cu An Cd Cr Cu JAN ND(S) ND(S) DNQ(6) 26 ND(S) ND(S) 18 29 ND(5) ND(S) ND(S) ND(S) ND(S) ND(5) 214 15 FEB MAR APR ND(S) ND(5) ND(S) II ND(S) ND(S) 34 88 ND(S) ND(S) ND(S) DNQ(5) ND(S) ND(S) ND(S) 20 MAY JUN JUL ND(S) ND(S) DNQ(5) 17 ND('S) ND(S) 25 49 ND(S) ND(S) ND(S) ND{S) ND(S) ND(S) ND(S) 16 AUG SEP OCT ND(S) ND(S) ND(5) 20 ND(S) ND(S) 17 30 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) 12 NOV DEC limit: none" Note: 001D, O01H and 0OIL analyses perform led on quarterly composites.
001F analyses performed quarterly on a cozup osite of weekly samples.
DISCHARGE 001D, H, L, F, METALS (avg. ug/I) 0011H O0L C01F 001D Month Hn Ni Pb Zn HA Ni Ph Zn HE Ni Pb Zn HE Ni Pb Zn JAN ND(0.050) DNQ(9) ND(S) 127 ND(0.050) 13" 13 23 ND(0,050) ND(S) ND(S) ND(S) ND(0.OS0) 88 DNQ(7) 17 FEB MAR APaR ND(0.060) ND(S) ND(S) 63 ND(0.060) 15 10 71 ND(O.060) DNQ(S) ND(S) ND(S) ND(0.060) 11 ND(S) 30 MAY JUN JUL ND(0.060) ND(S) ND(S) 86 ND(0.060) 21 DNQ(9) <to ND(0.060) ND(S) ND(S) ND(S) ND(0.060) 10 ND(S) '26 AUG SEP OCT ND(0.060) ND(S)' ND(S) 75 ND(0.C60) 14 <10 DNQ(8) ND(O.060) ND(S) ND(S) ND(S) ND(0.060) 10 ND(S) 23 NOv DEC limit: none Note: 001D, 00111 and COIL analyses performed on quarterly composites.
COIF analyses performed quarterly on a composite of weekly samples.
Page4of 6
2012 Annual Summary Report on Discharge Monitoring at. the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (rag/I)
Mouth 001D* 001G 001H 0011 001J 001K 001L 001M 001P 002 003 JAN <5 ND(2) DNQ(2) ND(2) 5 DNQ(2) 29 FEB <5 ND(2) ND(2) ND(2) <5 DNQ(4) 11 MAR <5 ND(2) ND(2) DNQ(2) 21' <5 DNQ(4)
APR <5 ND(2) ND(2) ND(2) ND(2) ND(2) 29 !1 34 MAY <5 ND(2) ND(2) ND(2) ND(2) <5 ND(2)
JUN <5 ND(2) ND(2) DNQ(3) ND(2) 14 DNQ(2) DNQ(2)
JUL <5 DNQ(2) ND(2) ND(2) DNQ(2) ND(2) ND(2) DNQ(4)
AUG <5 ND(2) ND(2) ND(2) DNQ(3) 11 DNQ(2) 7 SEP <5 ND(2) ND(2) ND(2) ND(2) DNQ(2) DNQ(4) DNQ(2) S OCT <5 ND(2) DNQ(2) ND(2) ND(2) ND(2) DNQ(2) <5 NOV <5 ND(2) ND(2) ND(2) DNQ(2) ND(2) 8 DEC <5 DNQ(2) ND(2) ND(2) ND(2)* DNQ(2) DNQ(2)
Limit: 30 30 30 30 30 30 30 30 30 30
- Discharges from O0ID arehbatched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K during 2012.
Blatik spots for other discharge points indicate that no discharge occurred during that particular month.
QUARTERLY GREASE & OIL Averages by Month (rag/I)
Month 001D* 001G 001H 0011 001J 001K O01L 001M DOIP 002 003 004 JAN <5.0 ND(1.4) ND(1.4) ND(I.4) ND(1.4) ND(I.4) ND(1.4) ND(I.4)
FEB DNQ(3.9)
MAR ND(I.4)
APR <5.0 ND(I.4) ND(1.4) ND(I.4) ND(I.4) ND(I.4) ND(I.4) ND(1.4) ND(I.4) ND(I.4)
.MAY DNQ(2.1)
JUN DNQ(2.7)
JUL <5.0 ND(I.4) ND(I.4) ND(I.4) ND(1.4) ND(I.4) ND(I.4) ND(I.4) ND(I.4)
AUG ND(I.4) ND(I.4)
SEP <.5.0 ND(I.4) ND(I.4)
OCT <5.0 ND(I.4) NSD(l.4) ND(1.4) ND(I.4) ND(I.4) ND(I.4) ND(1.4) ND(I.4)
NOV <5.0 ND(I.4)
DEC <5.0 Limit: 15 15 15 15 15 15 15 15 15 15 15 15
- Discharges from O01D are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K durinsg 2012.
Page 5 of 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tUa and tue)
ACUTE *CHRONIC Test 6.Month Test Month Result Median Result JAN FEB 0.00 0.00 1.00 MAR/
APR 0.00 0.00 1.00 MAY JUN JUL 0.00 0.00 1.00 AUG SEP OCT 0.00 0.00 1.00 NOV DEC
'6-month median limit: 0.26 5.1
- This parameter is monitored for the State Ocean Plan instead of the NPDES Permit. A value of 1.0 indicates no chronic toxicity.
DISCHARGE 001N ANNUAL ANALYSES Sludge Parameter Result Limit Percent Moisture 99% None Total Kieldahl Nitrogen 620 mg/I None Ammonia (N) 58 mag/I None Nitrate (N) 5.9 mg/I None Orthophosphate (as P) 97 mg/I None pH 7.1 None Oil and Grease 11 mg/I None Boron 1.i mg/I None Cadmium 9.0 ug/l 10 X STLC*
Copper 3500 ug/l 10 X STLC Chromium DNQ(37) ug/l 10 X STLC Lead 54 ug/h 10 X STLC Nickel 71 ug/l 10 X STLC Mercury 16 ug/l 10 X STLC Zinc 5000 ug/l 10 X STLC Volume 1.31 tons None Note: Annual samples were collected in October.
- STLC Soluble Threshold Limit Concentration Page 6 of 6
Annual Discharge Monitoring Report APPEN DIX 3 GRAPHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT TemperatreC'F)
- 90.0T 80.0 70.0-60.0-Ij 60.
£40I.0 30.0-20.0-
-i
--- e,-'-Aw
.-- *Low 10.0O 0.0JAN t FEB MAR I
APR MAY JUN I
JUL AUG SEP I OCT NOVI !
DEC 2012 DISCHARGE 001 EFFLUENT Temperatur (CF) 90.0 6O00 70.0 60.0 igoG.
£40.0 30.0 20.0 I~A~I 10.0 0.04 I I L ~J JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Page l of 15
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow (IUGD) 2SO jisco x *i"'
U U
54 0 I I I II JAN FEB MAR APR MAY JUN JUL AUG SEP OC~T NOV DEC 2012 DISCHARGE 001 EFFLUENT 25 m
10 F
--.4*-- t.t*
--- 4.---Avm*t 0 ~
JAN FEB MA APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Page2 ofIl$
f I I III I i i
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Tota Clo*n Residual, ugh 100 "
70 60
- 20-10 JAN I FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below the reporting liuit.
DISCHARGE 001 Total ChlorineUsed, pounds per day 800 - .- -- , i 700 -*-A 0.
400.
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note:"The zero value Iu April was due to uo chlorine system injections for one day.
Page 3 of'1.S
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Coppr(monm~aveag, u.4) i
--p- Permait~
Um t R.p.dkng Limi 12 -a *nkmn 10 4
2 L-0JAN 2012 Note: The analyt was not detected at or above the detection limit for values plotted at zero.
The 6-maoth median limit (the most conservotive Eimit) is plotted on this chart (this Is also the onalyticl reporting lirit).
The dail maximum Eimit for Copper is S0 ugIL DISCHARGE 001 Nickel (monthly average, ug/I) 35 30: --
.--O-.- ash~s punma ium 25
- nun 20 ------ AmdUcaI Rapou* UL 15 0 SI I I 1i I iIi 10 10 10 10 10 10 10 10 10 10 10 10 2012 Note:. The amalyte was,not detected at or above the detection Eimit for values plotted at zero.
The 6-moath median limit (the fmost conservative Eitm) is plotted en this chart.
The daily maximum lEmit for Nickel is 100 .glr.
Page4of I
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zic(monthy avrage, ug/i) 60 60 50 ---
-v mocxe Iml~ e*Unt 30 20 10 0
MAR APR DEC 2012 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001 Chromium (monthly average, ugh) 12 10 8
4 2
0 NOV DEC 2012 Note:" The amulyte was not detected at or above the detection Himnt for values plotted at zero.
The 6-month median Emit Is plotted on this chart. The daily maximunm Eiut for chromium is 40 ugiL The discharge permit limit aad the analytical reporting limit are the maine (10 ug/I).
Page S of 15 f
nl
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant pH 8.3---- m n I---M- 0o 6.2-- --
8.0 mt 7.19 Z. 7.9 7.7 7.6 -
7.5 7.4 7.3 JAN FEB MAR AP bR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Several data points on this hart overlap.
Discharge 001 Amnmonia (as N, ug/I) 38( l0 30C 26C10 -- =- 64hoE USEIS Lee 10 -. h- hJlue.t
--4--- Elluem IOO10 10 O0I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: The analyte was not detected at or above the detection tlmit for values plotted at zero.
lafiueat and Efflucut values overlap at three points on this plot.
Page 6 ofIlS
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE O01F Oa & Grease (Maxilmum, molt) 25.0 20.0 15.0 t)
E 10.0+
5.0 p p JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below tihe deteetllo, limit.
DISCHARGE 001F Suslptnd.4 Solids
- ,.,(Maximum, mgdl) dwl MW T
- :-- i i . - -....
1150.1.
ao0 -...-- *M,,hm* ~
U*.S 60 40-I
( - 3 3 C 20 j
- - - -v---U-- t p JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Maximum values are plotted.
Page 7 of l$
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 26 20 16 0-I i I T JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Daily maxaimau and monthly average values OVerlap at seven polats on tbhs plot.
DISCHARGE O01N Suspended Solids (mg/I) L.e-*w ipk 100 90 so 70 60 0 IIt I ' I ' 1I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note:. There Is.nUMalt for daily mialnunm values. The average values are below monthly average limit.
DISCHARGE OO1N S.tWeable Solids (mi/)
3.5 2.5 i-o-e--oyr~rM LuI E 1.5 0.6
-j JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note:. Values plotted at zero were below the detection Ihult.
High, average, mad low values overlap at twelve points on this plot.
Page 8ofl15
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 D QuartdyMetuf (ugh) IuCadmftND luaronluml
- 20 10 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note:. The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001D QuarterlyMetals (aig/I) 140 120 FL*I I.L*
100 uanc 60 20 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note:- The analyte was not detected at or above the detection limit for values plotted at zero.
Page 9 ofIl
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F 260*
200 U Chromium 160 ico-j 50 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte w-s not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001F Quarte/y Meal/s (ug/4) 60-IUNkI 40- r wcwi]
ULadI 30
,I ,I 20O 10 u
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 19 of 1S
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE O01H Quartrly8Mrals (ug/O 100 UatCnIwnlu 90
-,CopperM 80 70 60 30 20 10 0
FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The aulyte was not detected at or above the detection flmnt ror values plotted at zero.
DISCHARGE 001H Quarterl Metaa (ugW) 80 T 70 60- IuLeadl 80-10-0-
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
PagellIofl15
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE OO1L Qurn'teNetemla (ug7) 20 18 16 14 I*ChroIlun 12 8
4 2 II 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte was met detected at or above the detection Hlmt for values plotted at zero.
DISCHARGE 001L QuarteryMetals (ugAI) 14 12 10+
8 omim]
6 ImlckelI iULeed 4
LZ~J 2
0 I IIII I I III JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The amalyte was mot detected at or above the detection Iimlt for values plotted at zero.
Page 12 of/'15 I Il l I I ' I I I I(I II II I I I
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOUDS 35 -(Average, rag/I)
S20 I-.--ooto l 10 10 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note. Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOUIDS (Average, tog/)
35" 3ol =I.. . . = . . . . .
~20 IIot E 15.. -- m 10 5
0 A ____ __A1 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS (Average, mg/I) 40 25 301 - m-
~'20 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
There is no limit for discharge 003. Therefore, the April 003 value of 34 does not exceeda l ImIti Page 13 of15 i* I
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (Averae, mg/I 16 12 mut012 1
~I
- m(Averageagmg/In
- ~
16 4
2 0a ...... I .... .......
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below the detection limit. Ls hvle r lte ttevle QUARTERLY OIL & GREASE (Average, mag/I) 16
_- U U- -- U -- -- U- = -- U _-
14 P 12 IIo 10 "'" l 4
2 0 I 1 I IIII I I I1 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below the detection limit.
Page Iiofl35
- II I , I il l I ,, I I I e
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY (6-Month Median) 6.00-5.00-2 4.00 Chronfc Bioassay Results
-S-mo. Medlui Acute Limit
-a- Chronic Limit
- 3.00
-*-Acute Bioassay Result.
Acute 6-month Median
'1.00-0.00 I JAN FEB I
MAR C
APR 0
MAY I
JUN JUL C
AUG I
SEP OCT 0
NOV 0
DEC 2012 Page iS ofl$S I
Annual Discharge Monitoring Report APPENDIX 4
SUMMARY
OF RWVMP MONITORING FOR 2012 RWUP 1st Survey 2nd Survey 3rd Survey 4th Survey Study Station,/ Completion Completion Completion oplto SdySurv.-y. Statlonsl Stationsl Statlonsl Stationsl per Year Dates Date. Dates Dates Horizontal Band Transects 1414x Feb 17 Jun 07 Aug 31 Dec 24 Vertical Band Transects 5/14x Feb 07 Jun 07 Aug 02 Dec 12 Benthic Statloons 81!4x Mar 09 Jun 28 , ep11 Dec 11 Fish Observation Transects 12/4x Apr24 Jul 13 Oct 09 Janl17, 2013 Bull Kelp Census *11lx n/a n/a n/a Oct 17 STemperature Monitoring 241/* Jan-Mar Apr-Jun Jul-Sep ,,Oct-Dec
- Diablo Cove census.
- -*Temperature measured throughout the year at 20 minute intervals (14 intertidal and 10 subtidal stations).
.A
Text
SWR-08 Pacific Gas and E~lectric Company Diabl0 Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424 805/545-6000 PG&E Letter DCL-201 1-512 I. Electronic CIWQS WebSubmission Application February 28, 2011
'*California Regional Central Coast RegionWater Quality Control Board Attn: Monitoring and Reporting Review Section 895 Aerovista, Suite #101 San Luis Obispo, CA 93401-7906
Dear Mr. Briggs:
In accordance with Order 90-09, NPDES No. CA0003751, the 2010 Annual Report on Discharge Monitoring at Diablo Canyon Power Plant is provided. This letter and accompanying annual data summary tables and plots are attached to the ClWQS application submittal.
Facility Name: Diablo Canyon Power Plant Address: P.O. Box 56 Avila Beach, CA 93424 Contact Person: Bryan K. Cunningham Job
Title:
Supervisor, Environmental Operations Phone Number: (805) 545-4439 WDR/NPDES Order Number: Order No. 90-09, NPDES No. CA0003751 Type of Report: (check one)
QUARTERLY ANNUAL
[] ii Quarter: (check one): 1 st 2nd 3 rd 4 th 0] 0] 0] 0]
Year: 2010 (Annual Reports for DCPP are Jan-Dec)
Violation(s) (Place an X by the appropriate choice):
El No (there are no violations to report) ~[] Yes e
cOpY
PG&E Letter DCL-201 1-512 Mr. Briggs February 28, 2011 Page 2 if Yes is marked (complete a-g):
a) Parameter(s) in Violation:
Grease and Oil (G&O) Daily Maximum Limit Exceedance of 50.0% April, 29 2010.
b) Section(s) of WDR/NPDES Violated:
NPDES No. CA0003751 Order 90-09 Section B. Effluent Limitations, Subsection 2.
Discharge 001 D Constituents - Grease and Oil -
Units mg/I - Daily Maximum 20.
c) Reported Value(s)
G&O Daily Maximum for April 29, 2010 Discharge O01D = 30 mg/I.
d) WDR/NPDES Limit/Condition:
G&O Daily Maximum Limit Order 90-09 Discharge O01D =20 mg/I.
e) Dates of Violation(s)
(reference page of report/data April 29, 2010.
sheet): Note: Daily maximum values for 001D G&O are not reflected in Annual Report Tables or Charts.
f) Explanation of Cause(s): (If "YES", see overview section of attached report)
(attach additional information as *Reference Annual Report Overview Section, needed) Subsection 4. Review of Compliance Record and Corrective Actions, Item c.
g) Corrective Action(s): (If "YES", see overview section of attached report)
(attach additional information as Reference Annual Report Overview Section, needed) Subsection 4. Review of Compliance Record and Corrective Actions, Item c.
PG&E Letter DCL-201 1-512 Mr. Briggs February 28, 2011 Page 3 I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage'the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. The results of the influent and effluent monitoring presented are the observed results of the measurements and analyses required by the monitoring program, and is neither an assertion of the adequacy of any instrument reading or analytical result, nor an endorsement of the appropriateness of any analytical or measurement procedure. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
If you have any questions or concerns, or require additional information, please contact Bryan Cunningham at (805) 545-4439.
Sincerely, 4~g. e~ajo Name: James M. Welsch C
Title:
Station Director- Diablo =Canyon Power Plant 201 151 2/lk/bkc
PG&E Letter DCL-2011-512 Mr. Briggs February 28, 2011 Page 4 cc: PDF Formatted Copy of CIWQS Application Submittal:
Regional Administrator U.S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 Hardcopy Print-Out of CIWQS Application Submittal:
U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-0001 Michael S. Peck Senior Resident Inspec1tor U.S. Nuclear. Regulatory Commission Diablo Canyon Power Plant 104/5
CIWQS Web Application Submittal Print Out and Attached Supporting Documents eSMR PDF Report Summary: Annual SMR ( MONNPDES ) report for 2010 Summary: Annual SMR ( MONNPDES ) report for 2010 submitted by Brad Hinds(Chemistiy and Environmental Operation Manager) on 02/28/2011.
Facility Name: PG&E DIABLO CANYON POWER PLANT Order Number: R3-1990-0009 Waterboard Office: Region 3 - Central Coast Case Worker: Peter von Langen, John Biegel Report Effective Dates: 01/01/2010 - 12/31/2010 No Discharge Periods azn*, [
utaDlO M-UUI I- .4 .4 Djiablo M-t0l lD
- I- -I .1 Diablo M-Ut01F Diablo M-O01G Diablo M-001H Diablo M-001I 01/01/2010 - 12/31/2010 Diablo M-0O1J Diablo M--OIK 01/01/2010- 12/31/2010 Diablo M-001L Diablo M-001M Diablo M-001N Diablo M-001P Diablo M-002 Diablo M-003 Diablo M-004 Diablo M-005 Diablo M-008 Diablo M-009 Diablo M-013 Diablo M-01 S Diablo M-016 I}1/01/2010 - 12/31/2010.......
Diablo M-017 __________________01/01/2010- 12/31/2010 Diablo M-INF Self-Determined Violations
. ~oiatlon~, a' ~cr ~eAc o 53~Q.&irt~uce DII..
'.31* CII) ', JIG~l*V JJ*,II and reported value was 30.0 mg/L.. IlUiiI IV*GAUIIUlIII IC £U.U lIIl* -. Keterence Annual Keport Overview Section, Subsection 4. Review of Compliance Record and Corrective Actions, Item
- c. (Attachment I).
Procedural data sheets and associated review processes implemented prior to authorizing a tank wastewater release have been enhanced to prevent a discharge through pathway 0010 if constituent parameters are not in specification with NPDES permit limitations.
Attachments Ittachment 1 - 201 Annual Report Overview Section.pdf 2010 Annual Summary Report on Discharge 02/2812011 l ]~~Monitoring at Diablo Canyon Power Plant ..
Attachment 2 - 2010 Annual Rpt Appendix-I NPDES Discharge DCPP NPDES Discharge Points Table 02/28/2011 Points.pdf ______________________________
Attachment 3 -201'0 Annual Rpt Appendix-2 Tabular Summaries T'abular Summaries of Influent and Effluent 02/28/2011 of Monitornng.pdf Monitoring ___________
Attachment 4 - 2010 Annual Rpt Appendix-3 Graphical Graphical Summaries of Influent and Effluent 02/28/2011 iSummaries of Monitoring.pdfl Monitoring___________
Attachment 5 - 2010 Annual Rpt Appendix-A Summary of Summary of Receiving Water Monitoring 02128/2011 RWMP Monitoring.pdf Program (RWMP) Activities ___________
Cover Letter (Uploaded File)
POE DCL201 1512 2010 Annual[ 2011-02-28 10:03:58.0 1205299 bytes Diichar e Monitoring Report.pal Data Summary Analytical Results No Analytical Data Measurements Available / Reported Calculated Values No Calculated Data Measurements Available / Reported Certificate All analyses were conducted at a laboratory certified by the State Water Resources Control Board or approved by the executive officer and in accordance with current EPA guideline procedures or as specified in the monitoring program. I certify under penalty of law that all data submitted, including attachments, were prepared under my direction in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of a fine or imprisonment, for knowing violations. I certify that I am Brad Hinds and am authorized to submit this report on behalf of PG&E DIABLO CANYON POWER PLANT. I understand that I am submitting a Annual SMR ( MONNPDES ) report for 2910 and I understand that data submitted in'this report can be used by authorized agencies for water quality management related analyses and enforcement actions, if required. Entry of my name and title below indicate my certification of this report and my understanding of the above conditions.
Name: Brad Hinds
Title:
Chemistry and Environmental Operation Manager
ANNUAL
SUMMARY
REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2010
PG&E Letter No. DCL-2011-512 2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS P)AGE OVERVIEW 1
SUMMARY
OF MONITORING PROGRAM 1 A. Monitoring of Plant Influent and Effluent 1 1'. Monitoring Data
- 2. Facility Operating and Maintenance Manual
- 3. Laboratories Used to Monitor Compliance 2
- 4. Review of Compliance Record and Corrective Actions 2 B. Monitoring of Receiving Water 4
- 1. Ecological Studies at Diablo Canyon 4
- 2. In-Situ Bioassay 4
C. Sodium Bromide Treatment Program APPENDICES Appendix 1 - NPDES Discharge Points Appendix 2 - Tabular Summaries of Influent and Effluent Monitoring Appendix 3 - Graphical Summaries of Influent and Effluent Monitoring Appendix 4 - Summary of RWMP Monitoring for 2010
2010 Annual Summary Report on Discharge Monitoring at the**
Diablo Canyon Power Plant OVERVIEW This annual summary report follows the format used in quarterly monitoring reports. Analytical results below the respective analytical detection limit (ND or non-detect) are plotted as a "zero" value in accordance with ELAP guidance. Results between the analytical detection limit and reporting (quantitation) limits are plotted at the value and shown as 'DNQ' in the' tabular summaries as is done for ClWQS reports. Less-than results are typically reported to express an average of values that include non-detects and at least one positive result. These less-than results are plotted conservatively at the value. During 2010, discharges occurred from all discharge paths except 0011I, 001K, 016, and 017.
B. California Ocean Plan Table B substances that were not analyzed for have not been added to the discharge stream. The substances listed in Table B in the California Ocean Plan were each analyzed for and reported in the permit renewal application for Diablo Canyon Power Plant (DCPP) submitted in October 1994 and January 2001. There have been no changes in activities conducted at the plant that would have significantly affected the results previously reported in the above referenced documents.
SUMMARY
OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent
- 1. Monitoring Data
- a. Appendix 1 provides a list of discharge path names for ease of reference. Appendix 2 contains monitoring data in tabular form. Reporting formats for the 1 st quarter 2010 have been revised to reflect conventions required for the CIWQS Application eSMR. Appendix 3 contains monitoring data in graphical form.
- b. Annual oil and grease analyses were performed in October on Stormwate'rlYard Drain Discharges 005, 008, 009, 013, and 015. Results were non-detect (less than 5 mg/I) for all five of these discharge points. No discharges~that resulted in adequate sample quantities occurred from pathway 016, and no discharge occurred from 017 during 2010.
- c. In October, Discharge 001 D (Liquid Radioactive Waste Treatment System) annual grab samples for lithium, boron, and hydrazine were collected and analyzed. The results were 0.083 mg/I, 319 mg/I, and non-detect (less than 0.003 mg/I), respectively.
- 2. Facility Operating and Maintenance Manual Pacific Gas and Electric Company (PG&E) maintains a multiple volume Plant Manual at DCPP that contains procedures used for operation and maintenance activities at the plant, including those activities that relate to wastewater handling, treatment, sampling, analysis and discharge.
Plant procedures are prepared and reviewed by DCPP Staff and approved by DCPP Management.
DCPP conducts biennial internal audits that review NPDES plant procedures contained in the manual. Ongoing reviews of plant procedures are conducted to assure that the manual remains valid, current, and complete for the facility.
I
- 3. Laboratories Used to Monitor Compliance The underfollowing laboratories the appropriate were for agencies used during 2010Q for they thetest/analyses monitoring perform.compliance.
As part of They are certified the on-going annual certification process, these laboratories take part in, and have passed, annual quality performance evaluation testing.
- a. PG&E Chemistry Laboratory, DCPP, Avila Beach, California (Lab Certification # CA0! 036)
- b. Aquatic Bioassay Consulting Laboratories, Ventura, California (Lab Certification # CA0l1907)
- c. Creek Environmental, San Luis Obispo, California (Lab Certification # CA00975)
- d. Columbia Analytical Services, Kelso, Washington (Lab Certification # WA00035)
- e. TestAmerica, Inc., Earth.City, Missouri (Lab Certification # MO00054)
- f. Abalone Coast Analytical:, San Luis Obispo, California (Lab Certification # CA02661)
- g. Oilfield Environmental and Compliance, Santa Maria, California (Lab Certification # cA02438)
- 4. Review of Compliance Record and Corrective Actions
- a. Circulating Water Pump Chlorination/Bromination Monitoring The 2010 quarterly NPDES reports discuss chlorination cycles when discharge monitoring was interrupted. These are listed below with brief descriptions of the cause and respective corrective action. When these monitoring interruptions occurred, engineering evaluations (approved by the CCRWQCB January 13, 1994; PG&E Letter No. DCL-94-002) were performed. Detailed descriptions of these evaluations are included in the quarterly reports. Evaluations concluded that discharge chlorine limits were not exceeded during these events.
Chlorination Cycle T Date Monitoring! Cause ICorrective Action
___________ Interruptions _______________I_____ ____________
03/1 5110 Uni 2edn Plugged airline Airline cleared and cleaned 04/17/10 to Unit 1 04210 2 edns Defective monitor electrode Electrode replaced 07/23/10 to Unit 2 Debris clogging monitor. Debris removed 07/24/10 7 Readings sample line _______________
07/26/10 to Unit 2 07/27/10 5 Readings Leaking fitting in monitor Fitting replaced 11/03/10 to Unit 2 'Sample pump fouled with 11/10/10 42 Readings biological growth Samplepump cleaned 120/0Unit 2 Post-maintenance restart of ' Personnel involved interviewed
______ 1 Reading monitor delayed and coached
- b. Closed Cooling Water Releases During 2010, maintenance activities that required draining of closed cooling water systems were performed and are summarized below. PIG&E received concurrence from the CCRWQCB in response to letters dated July 19, 1995 (PG&E Letter DCL-95-1 56), May 23, 1996 (PG&E Letter DCL-96-522), and May 19, 1997 (PG&E Letter DCL-97-533) regarding the use of glutaraldehyde and isothiazolin to control microbiological growth and corrosion in DCPP's closed Cooling water systems. Any drainage from these systems is discharged at a flow-rate such that the chronic toxicity level is below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.
2
The volumes of cooling water drained in 2010. from the component cooling water (CCW), service cooling water (SOW), and intake cooling water (lOW) systems are presented below. The glutaraldehyde (Glut) and isothiazoline (Iso) concentrations presented in the table below are system concentrations, not concentrations at the point of discharge to receiving water.
(OilGrease& ]
J(mgII) 1jSolids 1 1 Total Rao Date____
Dt Ssem System___
Volume IGlut (gallons)] (mg/I) iIso Suspended (mgll) (mglll) J Reso Comments 01/06/10 Unit 1 1CW 3,370 76 5.7 n/a n/a Rputine Maintenance 01/13/10 Unit 1 SOW 33,000 < 50 7.5 12.0 < 1.4, Routine Maintenance 01 /14/10 Unit 1 CCW 930 158 0.0 n/a n/a Routine Maintenance 01/26/10 Unit 2 SOW 33,200 < 50 7.4 19.1 < 1.4" Routine Maintenance 05/04/10 Unit 2 SCW 33,350 67 5.1 < 2.0 < 1.4 Routine Maintenance 05/19/10 Unit 2 lOW 3,331 70 1.8 n/a n/a Routine Maintenance 06/09/10 Unit 1 SOW 33,10.0. 149 4.0 < 2.0 < 1.4 Routine Maintenance 06/27/10 Unit I CCW 378 175 n/a n/a n/a Routine Maintenance 07/26/10 Uritl1 COW 322 136 0.0 n/a n/a Routine Maintenance 08/10/10 Unit I COW 900 126 0.0 n/a n/a Routine Maintenance 08/17/10 Unit 1 lOW 3,320 63 9.2 n/a n/a Routine Maintenance 09/09/10 Unit 2 SOW 33,000 78 7.2 < 2.0 < 1.4 Routine Maintenance 09/18/10 Unit 1 COW 522 140 0.0 3.2 < 1.4 Routine Maintenance 09/22/10 Unit I COW 4,200 113 0.0 < 2.0 < 1.4 Routine Maintenance 10/02/10 Unit I SOW 8,250 .172 2.9 < 2.0 < 1.4 Routine Maintenance 10/08/10 Unit 1 lOW 1,100 .< 50 2.3 n/a n/a Routine Maintenance 11'/04/10 Unit 2 lOW 121 185 4.6 n/a n/a Routine Maintenance 11/10/10 Unit 2 lOW 3,314 185 4.6 n/a n/a Routine Maintenance 11/18/10 'Unit 2 SCW 33,200 < 50 1.9 10.3 < 1.4 Routine Maintenance
- c. Exceedances On April 29, 2010 chemical drain tank (CDT) 0-2 was discharged via permit pathway 001D with a grease and oil (G&O) concentration of 30 mg/I. The discharge resulted in an exceedance of the daily maximum limit of 20 mg/L G&O for the pathway. The exceedance was not discovered until after the 2 nd Quarter CIWQS Electronic Data Report (eSMR) was submitted on July 20, 2010.. The event was discovered during final review of the USEPA DMR Forms for the same reporting period. The CIWQS eSMR and DMR Forms for the 2nd Quarter 2010 reflected the correct monitoring data, and the DMR submittal appropriately documented the exceedance.
Verbal notification of the event to the Regional Water Quality Control Board staff occurred on
- July 2l,2010.
Follow-up investigation determined the G&O discharge daily maximum of 30 mg/L exceeded the
- respective 20 mg/L permit limit by 50.0% as a result of this event.
Subsequent to discovery, the processes and procedures for approving tank discharges via pathway 001 D were' reviewed in detail. Procedural data sheets and associated review processes implemented.prior to authorizing a chemical drain tank wastewater release have been enhanced to prevent a discharge through pathway 001tD if constituent parameters are not in specification with NPDES permit limitations.
3
B. Monitoring of Receiving Water
- 1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2010 under the Receiving Water Monitoring Program (RWMP) as requested in a letter from the Central Coast Regional Water Quality Control Board (CCRWQCB) dated December 9, 1998, and as detailed in a letter from PG&E dated January 8, 1999 (DCL-99-503). This program includes tasks from~the Ecological Monitoring Program (EMP) with additional stations and increased sampling frequencies. This program replaces the EMP and the Thermal Effects Monitoring Progr'am (TEMP). Several one-year-only tasks outlined in the above letters were completed in 1999 and were not requested to be performed in 2010. Results of 2009 RWMP data were submitted to the CCRWQCB on April 29, 2010. A table in Appendix 4
- summarizes requirements a~nd completed monitoring tasks for 2010.
3.
- 2. In Situ Bioassay Results of the Mussel Watch Program are reported to the CCRWQCB directly by the California Department of Fish and Game in the agency's periodic report for this program.
- C. Sodium Bromide Treatment Program DCPP continued its integrated sodium bromide and "foul release coating"' strategy to control macrofouling ih the Circulating Water System (CWS). The treatment program consists of six 20-minute injections (at four hour intervals) of a blend of generic sodium bromide and sodium hypochlorite into DCPP's seawater intake conduits. Each injection attempts to achieve a target concentration of 200 parts per billion (ppb) Total Residual Oxidant (TRO) at the inlet waterbox of the main condensers. Discharge TRO, measured at the plant outfall, remained below NPDES limitations. Typically, discharge values were between 20 ppb and 50 ppb. In conjunction with the chemical treatment, untreated portions of the cooling water system were previously painted with a non-toxic "*foul release coating" to reduce or. prevent attachment of fouling organisms.
Both conduits of Unit 1 were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day through the middle of February 2010 with two brief interruptions in January for maintenance activities. In mid February, injections were shut down in preparation for mid-cycle tunnel cleaning. Simultaneous injections six times a day were restarted in late February and ran through August with brief interruptions in March, April, and August for maintenance activities. Unit 1 injections were shut down at the end of September for the 1R16 refueling outage. Simultaneous injections of sodium hypochlorite and sodium bromide were restarted at the beginning of November and ran through the remainder of 2010 with brief interruptions in early November due to high ocean swell activity, and late December due to maintenance activities.
Both Unit 2 conduits were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day throughout 2010 with brief interruption's in January, March, April, August,-
October, November, and December for maintenance activities.
4
- Anntlual Discharge Monitoring Report ApPENDIX I D iABLO CANYON POWER PLANT.:
............ NPDES DISCHARGE PO~iNTS: ! ..- .............
':.....DISCHARGE . .. ........ NUMBER ::" ' ":'::: DEscRIPTION:::":":: :
- .
- :: :. :::'001 :.: ::.. : . .O~nceThou.gh CoolinigW ater... : .
- 0,01 ,A , *:.." Fir[ewater Systems .... ...
- ........... 001...
O~ B ................. :... AuJxiliary Salt Water Cooling.System:
001. Ci . . .. .Di...scharge. Deleted .. .
'i............ 001...
O0iD ' :....... ..... ... ... Li~quidRadioactive W aste* .. .
____ ____ ____ Treatment :System . . ...
! ................. :001! E .. .. ; .Service Cooling :Water Sys~tem :
. .!001 .. ...... .. Tur~bine Building Su~mp)."....
' . o:001 G. , .Make-Up Water SystemiWaste Effl~uent........
!.'" "":001: H . : .,:... *Condenisate D~emineralizer Regeneran't
- ................. Q00 i J Condens.........te.
- Pumps: Discharg~e Heade-r*
______ ___... ..... __ .. .. O verboard: " ". .
. .. . ;001 K ... ...... ... Condenser Tube Sheet Le~akDetection
____........___...........____ :Duimp Tan~k Over~board:
- ,"
- ": 001. '
.. i0L .. i.,Steam-Generator:Blowdown, i 001 N :: Sanitary Wastewater :Treatment: ..
__________________ S "ystem S001 P Seawater ReverSe Osmosis :System.
_______..........____ iBlowd~own *.*."
................... 0.02 .... ".......... I ntake Structure -Building!Floor* Drains
- ...... ..... . !0.3.
... 0 .. .... ... . .... _i ...... ... .intake Screen Wash...... ....
" .......::': ::: 00:4:. .: .. .::, : - :.,.: Bio Lab an~d Storm. Water Run~off S...0.05, 008,:009, 013:, ;014, 015: .... ..... Yard .Storm Drains.-
- ....006, .007, 010o, :011;, .012: _. ::............ Storm Waiter RUnoff
........... 016.... Bio.Lab :Seawater SupyPm" av
..... .. ...._.... ..... .. ........ ...... .. ........ .. .. .. ... .. ... *.... ..Blowdo w n 'Drain . .. :: .......
Annual Discharge Monitoring Report APPENDIX 2 TABULAR SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001
- MPERATLJRE (DEG F) FLOW (MGD)
IN'FLUENT EFFLUENT DELTA T Month high low avg high__ low "avg* high avg high low avg JAN 57.5,- 55.6 56.7 76.6 63.5 75.1 19.7 18.4 2486 1279 2198 FEB 57.0 54.6 56.1 75.9 73.5 74.9 19.3 18.8 2486 1874 2413 MAR 56.9 50.4 52.5 75.5 69.1 71.1 19.1 18.6 2486 1862 2446 APR 54.2 50.2 52.3 73.1 68.9 71.1 18.9 18.8 2486 2486 2486 MAY 51.5 48.5 50.1 70.4 67.2 68.9 19.0 18.8 2486 2486 2486 JUN 52.2 49.4 50.6 71.5 68.1 69.4 19.3 18.2 2486 2486 2486 JUL 54.7 50.0 52.7 73.7 68.2 71.2 19.6 18.5 2486 2486 2486 AUG 54.2 50.5 52.3 73.1 69.8 71.3 19.4 19.0 2486 2486 2486 SEP 54.9 51.3 52.6 74.1 70.1 71.6 19.4 19.0 2486 2486 2486 OCT 58.3 53.5 55.9 78.6 71.0 75.3 20.3 19.4 2486 863 1363 NOV 56.6 51.9 54.6 75.5 70.1 62.9 19.4 15.4 2486 1502 2346 DEC 55.6 51.4 53.9 74.1 70.2 72.4 19.1 18.6 2486 1862 2446 limit: - -22 2760 The Influent and Effluent "high" and "low" temperture values correspond to the highest and lowest daily average value for that month. The Influent high and low temperature does not necessarily correspond to the same day as the Effluent high and low temperature for that month. The "avg" temperature for Influent and Effluent is the av~erage for the entire month. The Monthly Delta T "high" is the highest Delta T for a day of the month based on daily average lnfluent and Effluent temperature values. The "Avg" temperature is calculated from Influent and Effluent monthly avg values.
DISCHARGE 001 TOTAL RESIDUAL TOTAL CHLORINE CHLORINE (daily max. ug/I) USED (lbs/day)
Month high low avg high low avg JAN 52 16 38 562 70 484 FEB 57 .36 46 562 259 468 MAR 62 17 42 .518 271 "416 APR 68 <10 39 475 302 402 MAY 52 11 32 360 331 351 JUN 48 <10 19 432 374 391 JUL 21 <10 10 490 374 467 AUG 26 13 19 605 295 500 SEP 36 <10 17 577 446 499 OCT . 7 <7 <7 418 48 277 NOV 52 15 27 533 230 422 DEC 37 10 23 504 298 451 Note: The residual chlorine limits in Permit CA0003751, Order 90-09, is an instantaneous max of 200 ugii, and includes a time-based~limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.
Page I of 6
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/l)
CHROMIUM COPPER NICKEL *ZINC Month Influent Effluent lnfluent Effluent In fluent Effluent Influent Effluent JAN ND(S) ND(5) ND(S) ND(5) ND(5) DNQ(S) DNQ(6) ND(5)
FEB ND(S) ND(5) ND(5) ND(S) ND(5) ND(S) DNQ(5) ND(S)
MAR ND(5) ND(S) DNQ(6) ND(S) ND(S) ND(S) 13 ND(5)
APR ND(S) "ND(S) ND(5) ND(5) DNQ(8) DNQ(9) DNQ(6) DNQ(5)
MAY ND(S) ND(S) I11 DNQ(6) DNQ(9) DNQ(8) 11 ND(5)
JUN ND(5) ND(S) ND(S) ND(S) ND(5) ND(5) ND(S) ND(5)
JUL ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(6) ND(S)
AUG ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(8) DNQ(8)
SEP ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(6) DNQ(6)
OCT ND(S) ND(S) ND(S) ND(S) 11 11 ND(S) ND(S)
NOV ND(S) ND(S) ND(S) DNQ(6) 13 13 14 ND(S)
DEC ND(S) ND(S) ND(S) ND(S) 10 DNQ(9) ND(S) ND(S) 6-month median limit: 10 - 10 - 30 -70 VARIOUS DISCHARGE ANNUAL ANALYSES001 (monthly avg. ug/I) 6-Mo. Med.
Effluent Parameter lnfluent Effluent Limit Arsenic 1.52 1.53 30 Cadmium 0.055 0.052 10 Cyanide ND(10) ND(10) 30 Lead 0.18 0.04 10 Mercury DNQ(0.02) DNQ(0.04) 0.2 Silver DNQ(0.006) DNQ(0.004) 2.9 Titanium DNQ(0.4) DNQ(0.4) none
- Phenolic Compounds ND(8.42) ND(8.42) 150 (non-chlorinated)
- Phenolic Cmpds ND(2.02) ND(2.02) 10 (chlorinated)
- PCB's ND(0.0658) ND(0.0658) none
- Results for analysis of 9 target compounds. The sum of the 9 detection limits is 8.42.
- Results for analysis of 6 target compounds. The sum of the 6 detection limits is 2.02.
- Detection limits shown are the sum of individual detection limits for 7 targ~et compounds.
DISCHARGE 001 AMMONIA (as N) (ughl)
Month Influent Effluent JAN ND(41) ND(41)
FEB MAR APR MAY 134 76 JUN JUL 170 230 AUG SEP OCT NOV 64 82 DEC 6-month median limit: 3,060 Page2of 6
I,' " : I' 2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)
Discharge: 001 002 003 004 001P Month Influent Effluent JAY 8.0 8.0 8.1 8.1 8.1 7.8 FEB 8.0 8.0 8.1 8.1 8.1 7.8 MAR 7.8 7.8 .8.0 8.0 .8.0 7.8 APR 8.0 8.0 7.9 8.1 8.0 7.8 MAY 7.9 . 7.9 7.7 8.1 8.0 7.8 JUN 7.9 7.9 7.9 7.9 7.9 7.6 rJUL 8.0 7.9 8.0 7.9 8.2 7.8 AUG 7.8 7.8 7.9 7.9 7.6 7.6 SEP 8.0 8.0 8.0 8.0 7.8 7.8 OCT 8.0 8.0 . 7.9 7.7 8.0 7.7 NOV 7.9 , 7.9 7.8 7.9 7.9 7.6 DEC 8.0 8.0 7.9 7.9 8.0 7.8 DISCHARGE 001F SUSPENDED GREASE & OIL (mg/I) SOLIDS (mg/I)
Month high avg high avg JAN ND(1.4) ND(1.4) ND(2). ND(2)
FEB 6.1 6.1 19 18 MAR DNQ(1.7) DNQ(1.7) ND(2) ND(2)
APR ND(1.4) .ND(1.4) DNQ(3) DNQ(3)
MAY ND(1.4) ND(1.4) DNQ(3) DNQ(3)
JUN ND(1.4) ND(1.4) DNQ(3) DNQ(2)
JUL DNQ(t.4) DNQ(1.4) DNQ(3) DNQ(3)
AUG ND(1.4) ND(1.4) DNQ(2) <2 SEP ND(1.4) ND(1.4) DNQ(2) <2 OCT ND(1.4) ND(L.4) DNQ(2) DNQ(2)
NOV ND(1.4) ND.(1.4) DNQ(3) DNQ(3)
DEC ND(1.4) ND(1.4) DNO(3) <2 limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average L~imits.
DISCHARGE 001N (Monthly Summary of Weekly Data)
SUSPENDED SETTLEABLE SOLIDS (mg/I). SOLIDS (mi/l)
GREASE & OIL (mg/I)
Month high low avg high _ low avg high low avg, JAN ND(5.0) ND(5.0) ND(5.0) 13 7 11 ND(0.1) ND(0.1) ND(0.1)
FEB ND(5.o) ND(5.o) ND(5.0) 19 13 16 ND(o.1) ND(0.1) ND(0.1)
ND(5.O) ND(5.0) ND(5.O) 15 7 11 ND(0.1) ND(0.1) ND(0.1)
APR DNQ(2.2) ND(1.4) <5.0 18 DNQ(4) 7 ND(O,05) 'ND(0.05) ND(O.05)
MAY ND(1.4) ND(1.4) ND(1.4) 11 7 9 ND(0.05) ND(0.05) ND(0.05)
JUN DNQ(L.4) ND(i.4) DNQ(I.4) 22 8 13 ND(0.05) ND(0.05) ND(0.05)
JUL DNQ(2.4) ND(1.4)' DNQ(1.4) 23 7 15 ND(0.1) ND(0.1) ND(0.1)
AUG ND(1.4) ND(1.4) ND(1.4) 19 6 10 ND(0.1) ND(0.1) ND(0.1)
SEP DNQ(1.8) ND(I.4) <1.4 16 ND(2) 9 ND(0.1) ND(0.1) ND(0.1)
OCT DNQ(2.6) ND(1.4) DNQ(I.4) 17 4 10 ND(0.1) ND(0A1) ND(0.1)
NOV DNQ(3.8) " ND(1.4) DNQ(1.4) 12 7 9 ND(0.1) ND(0.1) ND(0.1)
DEC <5.0 ND(I.4) <5.0 13 7 10 ND(0.1) ND(0.1l ND(0.1) limit: 20 .- 15 - 60 3.0 -1.0
- Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
Page3of 6
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H 001L 001F Month Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu JAN "ND(S) ND(5) ND(S) DNQ(9) ND(5) ND(5) 12 35 ND(S) ND(5) ND(S) ND(5) ND(S) ND(S) ND(S) DNQ(9)
FEB MAR APR ND(S) ND(5) ND(S) DNQ(7) ND(5) ND(S) 33 21 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) DNQ(9)
MAY JUN JUL ND(S) NDC5) ND(S) DNO(9) ND(S) ND(S) 25 24 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) 15 AUG SEP OCT ND(5) ND(5) DNQ(6) DNQ(6) ND(S) ND(S) 18 72 ND(S) ND(S) ND(S) ND(S) ND(S) ND(5) 35 92 NOV DEC limit: none Note: 001D, 001H and C01L analyses performed on quarterly composites.
001F analyses performed quarterly on a composite of weekly samples.
DISCHARGE 00lD, H. L, F, METALS (avg. ug/1) 001D 001 H 0COIL 00IF Month Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn _ Hg Ni Pb Zn JAN ND({0.20) DNQ(5) ND(S) 120 ND(O.20) 12 DNQ(9) 18 ND(0.20) ND(S) NID(5) DNQ(5) ND(0.20) DNQ(6) ND(S) 18 FEB MAR APR DNQ(0,092) ND(S) ND(S) 120 DNQ(0.015) 17 DNQ(7) 19 DNQ(0.108) ND(S) ND(S) ND(S) .ND(0.0S0) DNQ(7) ND(S) 29 MAY JUN JUL ND(O.050) DNQ(6) ND(S) 109 ND(0.O50) 17 ,DNQ(8) 12 ND(0.O50) ND(S) ND(S) ND(S) ND(0.O50) DNQ(8) ND(S) 18 AUG SEP OCT ND(0.SO5) DNQ(5) ND(S) 149 DNQ(t.069)* 15 DNQ(S) 13 DNQ(0.062) ND(S) ND(S) ND(S) ND(0.10) 46 ND(S) 259 NOV DEC limit: none
.Note: 001D, CO1H and 0OIL analyses perforErreed on quarterly composites.
O01F analyses performed quarterly on a cornposite of weekly samples.
Page 4 of 6
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (mg/i)
Month 001D* 001G 001H 0011 001J -001K QOlL O01M 001P 002 003
.JAN <5 ND(2) ND(2) ND(2) DNQ(2) 9 6 FEB <5 ND(2) ND(2) ND(2) DNQ(3) <5 DNQ(2) 24 MAR <5 ND(2) ND(2) ND(2) 6 <5 DNQ(3) 5 APR <5 ND(2) ND(2) ND(2) <5 <5 21 MAY DNQ(4)
- ND(2) ND(2) ND(2) 11 DNQ(3) 6 JUN <5 ND(2) ND(2) ND(2) 7 ND(2) 8 JUL <5 ND(2) ND(2) ND(2) 19 DNQ(3) <5 AUG <5 ND(2) ND(2) ND(2) ND(2) 18 ND(2) <5 SEP <5 ND(2) DNQ(2) ND(2) 13 6 DNQ(2)
OCT <5 ND(2) ND(2) ND(2) 14 DNQ(3) DNQ(3)
ND(2)
NOV <5 ND(2) <5 DNQ(4) ND(2) DNQ(3) 26 5 12 DEC <5 ND(2) ND(2) ND(2) DNQ(2) DNQ(2) DNQ(2) 13 Limit: 30 30 30 30 30 30 30 30 30 30
- Discharges from 001D~are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K during 2010.
Blank spots for other discharge points indicate that no discharge occurred during that particular month.
QUARTERLY GREASE & OIL Averages by Month (mg/I)
Month 001D* 001G 0O1H 0011 001J 001K 001L 001M 001P 002 003 004 JAN DNQ(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
FEB ND(1.4) ND(1.4) ND(I.4)
MAR DNQ(1.6)
APR <5 ND(I.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
MAY JUN JUL DNQ(1.S) ND(I.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(I.4) ND(1.4)
AUG DNQ(2.0) ND(I.4)
SEP DNQ(3.7)
OCT DNQ(3.3) ND(I.4) ND(1.4) ND(1.4) ND(L.4) ND(I.4) ND(I.4) ND(I.4) ND(I.4)
NOV 7.7 ND(1.4) ND(1.4).
DEC ND(1.4) ND(1.4)
Limit: 15 15 15 15 15 15 15 15 15 15 15 15
- Discharges from 001D are batched. Monthly averages are flow weighted. A daily maximum exceedence in April is not reflected in this table.
Not~e: No discharges occurred from 001! and 001K during 2010.
Page 5 of 6
2010 Annual Summnary Report on Discharge Monitoring' at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tila and tUc)
ACUTE *CIHRONIC Test 6-Month Test Month Result Median Result JAN 0.00 0.00 1.0 FEB MAR APR 0.00 0.00 1.0 MAY JUN JUL 0.00 0.00 AUG SEP OCT 0.00 0.00 1.0 NOV DEC 6-month median limit: 0.26 5.1
- This parameter is monitored for the State Ocean Plan instead of the NPDES Permit. A value of 1.0 indicates no chronic toxicity.
DISCHARGE 001N ANNUAL ANALYSES Sludge Parameter Result SLimit Percent Moisture 99.3% None Total Kjeldahl Nitrogen 240 mg/I None Ammonia (N) 180 mg/I None Nitrate (N) DNQ(0.11) None Total Phosphorus 184 mg/I None pH 7.01 None Oil and Grease 140 mg/I None' Boron 1.0mg/I. None Cadmium 0.0034 mg/I 10 X STLC*
Copper 0.48 mag/I lO X STLC Chromium 0.015 mg/I 10X STLC Lead 0.018 mg/I 10X STLC Nickel ND(0.002) mg/I 1OX STLC Merciury 0.0011 mg/I 10 X STLC Zinc 3.8 mg/I *10 X STLC Volume 2.20 tons None Note: Annual samples were collected in October.
- STLC = Soluble Threshold Limit Concentration P,,
Page 6of 6
Annual Discharge Monitoring Report
_*APPENDIX 3 GRA*PHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT Tempermare (°F) 90.0 T 80.0 70.0 60.0 50.0 40.0I 30.0 20.0 +<
10.0 4T 0.0 --
JAN FEB MAR APR lA JN JIL AG SEP OCT NOV" DEC DISCHARGE 001 EFFLUENT Temperature(014) 80.0 S~
30.0 4 20.0 1+
20.0 {.
!0.0 -- _______
JAN FEB MAR A4PR MlAY JUN JUL AUG SEP OCT NOV DEC 2010 Page l of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow (MGD) 3.000 2500 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 DISCHARGE 001 EFFLUENT 0 Monthly Delta T ( F) 25 m l m i m m m m 20 __ m m nn-A L[
15 T S10 4 5+
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Page2ofl5
2010 Annual Summary Report on Discharge Monitoring at the Diabio Canyon Power Plant DISCHARGE 001 Total Chlorine Residual, ug/!
140 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Values plotted at zero were below the reporting limit.
DISCHARGE 001 Total Chlorine Used,pownds per day --- i~
500 A.-
+ 400+
2001 01 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Page3 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Copper ('monthly average. Ug/1) 12 10 8
4 2
0i4 --
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit ror values plotted at zero.
The 6-month median limit (the most conservative limit) is plotted on this chart (this is also the analytical reporting limit).
The daily maximum limit for Copper is 50 ughl.
DISCHARG E 001 Nickel (monthly average,ug/l) 35 20 10 10 10 10 10 10 10 10 10 10 10 10 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit (the moat conservative limit) is plotted on this chart.
The daily maximum limit for Nickel is 100 ughl.
Page 4 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zinc (monthly average, ug4l) 80 70 60
- U--I---elhwge Permit Limit
- lfluetti 50
- Anslytitta Reportiug[ Umit 30 20 10 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001 Chromium (monthly average, ug,?)
12T b6 U.
8 K -UPermit Uimli jnd
-- 4-- Emtrnet Reporttag Limit
=
4 i-JAN FEB MAR APR MAY JUN JUL AUG SEP OC~i" NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit is plotted on this chart. The daily maximum limit for chromium 1s 40 ug/I.
The discharge permit limit and the analytical reporting limit are the same (10 ug/i).
Page5 of 15 I
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant pH 8.8.2 8.1 8.0 7.9
- o. 7.8 7.64 **~Ol Emfueni 7.5 + 0 7.4* -4.-004 7.3 1........
- + . . .. + . .... -- .
-- . -- ...------- -- - I -- ..... .
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Several data points on this chart overlap.
Discharge 001 Ammonia (as N, ug/I)
T5o 3000--
m l nm mii Lm m i i
- 2000 "-I afl~wul 20100 4- K-- ~nm 1000 +
500-0 &. ................. ---- -- t . - ..... 4....... -- -A ...... - .....--j- -* --
JAN FEB M*AR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
influent and Emfuent values overlap at three points on this plot.
Page6of 1 5
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Oil & Grease 25.0 1T 20.0 15.0 U
10.0 5.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note; Values plotted at zero were below the detection limit.
DISCHARGE 001F SuspendedSolids (Maximwm. ng/i 120 T IEIu* * * * *. * * * * * *--"
80 U Daity Maxium Uimit
"-S- Momthly Average Limit 4 eml Samle ltllMaximom) 60 AaykI eoln m 4O 0
- T -,.
- _ ** . *.
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Maximum values are plotted.
Page 7 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 25 20 -
,*I5 --
Blo 5
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Values plotted at zero were below the detection limit.
High, low and average values overlap at eleven points on this plot.
70-60 i 30 20 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 DISCHARGE 001N Settleable Solids (mill) 35T 4-Di, Mazini u U,n It
[ .---
2: I ..-O"Mwinthly
-* Aver*5e Limit iug
.5g 3
O,* -.- *- -*- - -*- -
JAN FEB MAR APR MAY JUN 2010 JUL AUG SEP OCT NOV DEC Note: Values plotted at zero were below the detection limit.
High, average, and low values overlap at eleven points on this plot.
Page8oflS I
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE O01D QuarerlyMetals (ug/I) nmCadmluml
[] Chromium U
2 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARG E 001D QuarterlyMetals (ug4) 160 i
140+/-
120 ULead 100 ONickel jnZince 40 20 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 9 of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Quarterly Metals (ug/I) 100 -
80~
50~
UICadmiumn 0lsilver 40 ElChromium
+/-
I 30 UICopper 20 +
03.- ....... -+... .. ... -_ _
JAN FEB MAR APR MAY JUJN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001F Quarterly Metals (up/I) 140 120 iJ tOO00 80
[
I IMereuryi1 O
1ELeadi*
404+II~u 20 - - *+.........
JAN FEB MAR APR MAY JUN JUIL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page JO of15S
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001H Quarterly Metals (ug/l)
I 80 nSilver
- C~dminmm 70 ~IEChronmiumI I ~oper
=
30H JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001H Quarterly Metals (ugA4) 20-18 [1i MercuryI]
ENiekel ]
16 EILead I 14-12-8-
6-4.
2-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page IIlofl$S
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001L QuarterlyMetals (ag/i) 30w 25 20+/-
r- iver~
[]Cadmium t0 nmChromiumn 5-0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001L QuarterlyMetals (ug/I)
'to 4r+ Nickel U ]Lead JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 12 of15S
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS 35 - (Average* mg/l) 25 t 4rMooahy Average Limit 15 -+ -0--o11 10 +
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS 3 (Average, mg/I)
F- %oithly Av'erage Limit 20 4- OOIL I -@001L 10 .T 0)- * - * * $ -
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS -- lM.y A,#rge Lit* i (Average, mp/1) -...-- 0o2 25 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
Page I3of 15
2010 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (Average, ing')
16 T 14 ___i_____i 12 fi01D 102010 A5 dai3 m Mnly ~aximu Uxedncefr01 nArlsntrietdtnti lt nyavrgsaepotd JAN FEB A QUAPRTEMAY JUIJL & RAUG SP OTEO E (Average, mg/i) 16T- * * ~
- I0 ÷ loou
- "- - - -4 - - n-Mnll vrg ii JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: V'alues plotted at zero were below the detection limit.
QUARTERLY OIL & GREASE (Average, rag/I) 16 -r 2
8- 0oolp 6 t s--Monthly i.Aternp Limit 41-0 4--+---4--- ---- 4-+---- ---- -- .. -+---------I----- ---
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Note: Values plotted at zero were below the detection limit.
Pae1lfI
2010 Annual Summary ,Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY (6-Month Median) 6.0 I'*3. --O---6-muo. Median Acute Limit
-- i--Acute Bioassay Results
"* 2.0. !-- -Acute 6-month Median JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2010 Page 15 of15S i i i I I Ill*
Annual Discharge Monitoring Report APPENDIX 4
SUMMARY
OF RWMP MONITORING FOR 2010 RWMP 1st Survey 2nd Survey 3rd Survey 4th Survey Stations/ Completion Completion. Completion Completion Study Surveys Stations/ Stations/ Stations/ Stations/
____________ per Year Dates Dates Dates Dates Horizontal Band Transects 14 / 4x Feb 26 Jun 16 Aug 9 Dec 21 Vertical Band Transects 5/I4x Feb 12 Jun 16 Aug 11 Dec 8 Benthic Stations 8 / 4x Apr 19 Jun 3 Sep 1 Nov 18 Fish Observation Transects 12 / 4x May 10 Jul 9 Sep 13 Dec 13 Bull Kelp Census */ lx n/a n/a n/a Oct 22 Temperature Monitoring 24 / ** Jan-Mar Apr-Jun Jul-Sep Oct-Dec
- Diablo Cove census.
- Temperature measured throughout the year at 20 minute intervals (14 intertidal and 10 subtidal stations):
ANNUAL
SUMMARY
REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2011
PG&E Letter No. DCL-2012-507 2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS PAGE OVERVIEW 1
SUMMARY
OF MONITORING PROGRAM 1 A. Monitoring of Plant Influent and Effluent 1
- 1. Monitoring Data 1
- 2. Facility Operating and Maintenance Manual 1
- 3. Laboratories Used to Monitor Compliance 2
- 4. Review of Compliance Record and Corrective Actions 2 B. Monitoring of Receiving Water 4
- 1. Ecological Studies at Diablo Canyon 4
- 2. In-Situ Bioassay 4 C. Sodium Bromide Treatment Program 5 APPENDICES Appendix 1- NPDES Discharge Points Appendix 2- Tabular Summaries of Influent and Effluent Monitoring Appendix 3- Graphical Summaries of Influent and Effluent Monitoring Appendix 4- Summary of RWMP Monitoring for 2011
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant OVERVIEW This annual summary report follows the format used in quarterly monitoring reports. Analytical results below the respective analytical detection limit (ND or non-detect) are plotted as a "zr" value in accordance with ELAP guidance. Results between the analytical detection limit and reporting (quantitation) limits are plotted at the value and shown as 'DNQ' in the tabular summaries as is done for CIWQS reports. Less-than results are typically reported to express an average of values that include non-detects and at least one positive result.
These less-than results are plotted conservatively at the-v~alue. During 2011, discharges occurred from all discharge paths except 0011, 001K, 016, and 017.
B. California Ocean Plan Table B substances that were not analyzed for have not been added to the discharge stream. *The substances listed in Table B in the California Ocean Plan were each analyzed for and reported in the permit renewal application and application updates for Diablo Canyon Power Plant (DCPP) submitted in October 1994, January 2001, and April 2011. There have been no changes in activities conducted at the plant that would have significantly affected the results previously reported in the above referenced documents.
SUMMARY
OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent
- 1. Monitoring Data
- a. Appendix I provides a list of discharge path names for ease of reference. Appendix 2.contains monitoring data in tabular form. Appendix 3 contains monitoring data in graphical form.
- b. Annual oil and grease analyses were performed in October on Stormwater/Yard Drain Discharges 005, 008, 009, 013, and 015. Results are listed below. No discharges that resulted in adequate sample quantities occurred from pathway 016, and no discharge occurred from pathway 017 during 2011.
005 non-detect - ND(1 .4 mg/I) 008 non-detect - ND(1 .4 mg/I) 009 Value below reporting quantity - DNQ(1 .5 mg/I) 013 non-detect - ND(1.4 mag/I) 015 Value below reporting quantity - DNQ(2.9 mg/I)
- c. In October, Discharge 001D (Liquid Radioactive Waste Treatment System) annual grab samples for lithium, boron, and hydrazine were collected and analyzed. The results were non-detect (less than 0.050 mg/I), 380 mg/I, and 0.004 mg/I, respectively.
- 2. Facility Operating and Maintenance Manual Pacific Gas and Electric Company (PG&E) maintains a multiple volume Plant Manual at DCPP that contains procedures used for operation and maintenance activities at the plant, including those activities that relate to wastewater handling, treatment, sampling, analysis and discharge.
Plant procedures are prepared and reviewed by DCPP Staff and approved by DCPP Management. DCPP conducts biennial internal audits that review NPDES plant procedures contained in the manual. Ongoing reviews of plant procedures are conducted to assure that the manual remains valid, current, and complete for the facility.
I
- 3. Laboratories Used to Monitor Compliance The following laboratories were used during 2011 for monitoring compliance. They are certified under the appropriate agencies for the test/analyses they perform. As part of the on-going annual certification process, these laboratories take part in annual performance evaluation testing.
- a. PG&E Chemistry Laboratory, DCPP, Avila Beach, California (EPA Lab # CA01 036)
- b. Aquatic Bioassay Consulting Laboratories, Ventura, California (EPA Lab # CA01907)
- c. Columbia Analytical Services, Kelso, Washington (EPA Lab # WA00035)
- e. Abalone Coast Analytical, San Luis Obispo, California (EPA Lab # CA02661)
- f. Oilfield Environmental and Compliance, Santa Maria, California (EPA Lab # CA02438)
- g. Pacific EcoRisk, Fairfield, California (EPA Lab # CA01 307)
- 4. Review of Compliance Record and Corrective Actions
- a. Circulating Water Pump Chlorination/Bromination Monitoring The 2011 quarterly NPDES reports discuss chlorination cycles when discharge monitoring was interrupted. These are listed below with brief descriptions of the cause and respective corrective action. When these monitoring interruptions occurred, engineering evaluations (approved by the CCRWQCB January 13, 1994; PG&E Letter No. DCL-94-002) were performed. Detailed descriptions of these evaluations are included in the quarterly reports. Evaluations concluded that discharge chlorine limits were not exceeded during these events.
Date J
Chlorination Cycle Monitoring Interruptions ______________
Cause [Cor rectiveAction 03/09/11 to Unit 2 Sample Pump Fouled with Sml upCend 03/16/11 22 Readingqs Aggressive Biological Growth. Sml upCend 06/22/11 to Unit I Three-Way Sample Valve Fouled VleCend 06/29/11 42 Readings with Biological Debris.
07/06/11 to Unit 1 Meter Test Value Low. No Monitor Power Cycled. Test Value 07/13/11 5 Readings Apparent Cause Determined. Returned to Normal.
- 08/03/11 to Units 1 and 2 Electric Line Power to Discharge Electrical Power Restored.
- 08/04/11 10 Readings Monitors Lost.
08/17/11 to Unit 1 Monitor Sample Pump Discharge Sample Pump Cleaned.
08/24/11 31 Readings " Fouled by Debris. _________________
- b. Closed Cooling Water Releases During 2011, maintenance activities that required draining Of closed cooling water systems~were performed, and are summarized below. PG&E received concurrence from the CCRWQCB in
- response to letters dated July .19, 1995 (PG&E Letter DCL-95-156), May 23, 1996 (PG&E Letter DCL-96-522), and May 19, 1997 (PG&E Letter DCL-97-533) regarding the use of glutaraldehyde and isothiazolin to control microbiological growth and corrosion in DCPP's freshwater closed cooling water systems. Any drainage from these systems is discharged at a flow-rate such that the chronic toxicity level is below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.
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The volumes of cooling water drained in 2011 from the component cooling water (COW), service cooling water (SOW), and intake cooling water (lOW) systems are presented below. The glutaraldehyde (Glut) and isothiazoline (Iso) concentrations presented in the table are system concentrations, not concentrations at the point of discharge to receiving water.
Date System 1glos .r Volu Ge (gI)so
_______________________Solids Total (mg/I) Suspended (mg/I)
Oil &
Grease (mlI Ra o Comments 01/07/11 to Unit 2 SCW 1,670 54 1.3 n/a n/a Routine Maintenance 01/1 5/1 1 ______
01/19/11 Unit 1 SCW 29,800 112 2.0 6.5 2.5 Routine Maintenance 02/01/11 Unit 1 1CW 9 < 50 1.3 n/a n/a Routine Maintenance 02/03/li Unit 2 SOW 15 107 2.0 n/a n/a Routine Maintenance 03/30/11 - Unit 2 lCW 22 < 50 6.0 n/a n/a Routine Maintenance 05/05/11 - Unit 2 SOW 9,500 136 7.8 < 2.0 < 1.4 Routine Maintenance 05/07/11 Unit 2 lOW 1,150 116 5.4 n/a n/a Routine Maintenance 05/31/11 Unit 1 ICW 3,300 83 1.1 n/a n/a Routine Maintenance 06/08/11 Unit 1 SOW 33,158 62 4.9 9.3 < 1.4 Routine Maintenance 06/09/11 Unit 2 SCW 33,000 <50 2.4 29.1 4.5 Routine Maintenance 06/20/li Unit 2 SOW 450 98 <0.25 n/a n/a Routine Maintenance 07/19/11 Unit 2 SOW 12 55 <0.25 n/a n/a Routine Maintenance 07/25/11 Unit 2 ICW 5 167 3.1 n/a n/a Routine Maintenance 10/11/11 Unit 2 SOW 28,400 6.1 3.7 < 2.0 < 1.4 Routine Maintenance 11/28/11 Unit 2 SOW 500 < 50 0.6 n/a n/a Routine Maintenance 11/28/11 Unit 2 SOW 10 < 50 0.6 n/a n/a Routine Maintenance 12/18/11 Unit 2 SOW 10 84 2.5 n/a n/a Routine Maintenance 12/20/11 Unit 1 ICW 3,306 80 6.4 n/a n/a Routine Maintenance 12/26/li Unit 1 SOW 10 117 5.0 n/a n/a Routine Maintenance 12/27/li Unit 2 IOW 3,514 117 6.5 n/a n/a Routine Maintenance
- c. Exceedances On February 11, 2011 it was discovered that Unit 1 outfall residual chlorine monitor readings were abnormally high during the first few minutes of the five previous unit specific 20-minute seawater conduit chemical treatment cycles. Two chemical injections on February 10 th, and three chemical injections on February 1 1 th, resulted in momentary high residual chlorine readings as tabulated below..
February 10, 2011 1600 hrs 156 ppb 2000 hrs 171 ppb February 11,2011 0000 hrs 171 ppb 0400 hrs 171 ppb 0800 hrs 171 ppb For each monitored injection cycle, the high readings occurred only during the beginning of each 20-minute scheduled treatment, then residual chlorine readings returned to normal expected levels at the 001 Outfall for the remainder of each respective cycle.
Following discovery of the abnormally elevated monitor readings, chemical treatment was immediately shut down to both Units until the cause was evaluated. The event resulted from a failed diverter valve within the intake chemical injection system that selects between the 1-2 and 2-2 seawater conduits.
The valve failed such that it remained in a partially closed position during chemical treatments to the Unit 2 2-2 conduit, resulting in excessive sodium hypochiorite build-up in the upstream system piping.
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Upon initiation of subsequent injection treatments to the Unit 1 1-2 conduit, the excess hypochlorite was quickly released from the system resulting in short-duration concentrated chemical spiking during the 1-2 conduit treatment cycles.
Following system evaluation and discovery of the mechanical problem, the chemical treatment system was restarted with dechlorination in use as a precaution, and treatment to the 2-2 conduit terminated until the diverter valve could be repaired or replaced. Injections to conduit 2-2 were not restarted until the valve was replaced and verified fully operational on February 17, 2011.
The five high readings exceeded the California Ocean Plan calculated effluent limit of 89 ppb (ug/l) for 20-minute continuous treatment cycles. The event however did not result in an exceedance of the DCPP NPDES Permit Limit of 200 ppb (ug/l) Instantaneous Maximum for chlorine residual at Outfall 001. CCRWQCB staff were notified of the high discharge residual chlorine values that exceeded the calculated Ocean Plan Limit on February 11, 2011.
- d. Bypasses On December 13, 2011 the Unit 2 turbine building sump overflowed directly to the seawater once-through cooling system for approximately 5-minutes. This was an unexpected bypass of the normal 001 F discharge path caused by an equipment failure. A pressure relief valve lifted on a regeneration water pump in the Unit 2 secondary condensate polisher buttress resulting in a rapid influx of relatively clean condensate system water into the turbine building sump. The estimated volume of water released directly overboard was a maximum of 600 gallons. Regional Staff were notified of the pathway 001F bypass event at 15:20 on 12/13/11, within the required 24-hour period. Three samples of the sump contents were analyzed for total suspended solids (TSS) and one sample was analyzed for oil and grease (O&G). The average analytical result for TSS was 41 mg/I, below the daily maximum limit of 100 mg/I. The analytical result for O&G was 8.3 mag/L, also below the daily maximum limit of 20 mg/L. Therefore, no pathway discharge permit concentration exceedences occurred due to this event.
B. Monitoring of Receiving Water
- 1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2011 under the Receiving Water Monitoring Program (RWMP) as requested in a letter from the Central Coast Regional Water Quality Control Board (CCRWQCB) dated December 9, 1998, and as detailed in a letter from PG&E dated January 8, 1999 (DCL-99-503). This program includes tasks from the Ecological Monitoring Program (EMP) with additional stations and increased sampling frequencies. This program replaces the EMP and the Thermal Effects Monitoring Program (TEMP). Several one-year-only tasks outlined in the above letters were completed in 1999 and were not requested to be performed in 2011. Results of 2010 RWMP data were submitted to the CCRWQCB on May 2, 2011. A table in Appendix 4 summarizes requirements and completed monitoring tasks for 2011.
- 2. In Situ Bioassay Results of the Mussel Watch Program are reported to the CCRWQCB directly by the California Department of Fish and Game in the agency's periodic report for this program.
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C. Sodium Bromide Treatment Program DCPP the continuedWater Circulating its integrated sodium The System (CWS). bromide and "foul treatment release program coating" consists strategy of six to control 20-minute macrofouling injections in (at four hour intervals) of a blend of generic sodium bromide and sodium hypochiorite into DCPP's seawater intake conduits. Each injection attempts to achieve a target concentration of 200 parts per billion (ppb) Total Residual Oxidant (TRO) at the inlet waterbox of the main condensers. Discharge TRO, measured at the plant outfall, remained below NPDES limitations. Typically, discharge values were between 20 ppb and 50 ppb. In conjunction with the chemical treatment, untreated portions of the cooling water system were previously painted with a non-toxic "foul release coating" to reduce or prevent attachment of fouling organisms.
Both conduits of Unit 1 were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day throughout 2011 with brief interruptions in mid-February, May, July, early September, and December for maintenance activities. The September interruption was due to a scheduled Unit 1 seawater tunnel cleaning.
Both Unit 2 conduits were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day throughout 2011. Brief interruptions occurred in mid-February due to an injection system equipment failure related issue, and in March due to planned maintenance activities. Near the end of April injections were shut down entirely in preparation for the 2R16 refueling outage. Simultaneous injections of sodium bromide and sodium hypochlorite were reinitiated near the end of May when Unit 2 circulating water pumps were restarted. These simultaneous injections continued through the remainder of 2011, with brief interruptions in July and December due to planned equipment maintenance activities.
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Annual Discharge Monitoring Report APPENDIX I DIABLO CANYON POWER PLANT NPDES DISCHARGE POINTS DISCHARGE NUMBER DESCRIPTION 001 Once-Though Cooling Water 001 A Firewater Systems 001 B Auxiliary Salt Water Cooling System 001 C Discharge Deleted 001 D Liquid Radioactive Waste Treatment System 001 E Service Cooling Water System 001 F Turbine Building Sump 001 G Make-Up Water System Waste Effluent 001 H Condensate Demineralizer Regenerant 001 I Seawater Evaporator Blowdown 001 J Condensate Pumps Discharge Header Overboard 001 K* Condenser Tube Sheet Leak Detection
_________________________Dump Tank Overboard 001 L Steam Generator Blowdown 001 M -Wastewater Holding and Treatment System 001 N Sanitary Wastewater Treatment System 001 P Seawater Reverse Osmosis System Blowdown 002 Intake Structure Building Floor Drains 003 Intake Screen Wash 004 Bio Lab and Storm Water Runoff 005, 008, 009, 013, 014, 015 Yard Storm Drains 006, 007, 010, 011, 012 Storm Water Runoff 016 Bio Lab Seawater Supply Pump Valve
_________________________Drain 017 Seawater Reverse Osmosis System
________________________Blowdown Drain
Annual Discharge Monitoring Report APPENDIX 2 TABULAR SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 TEMPERATURE (DEG F) FLOW (-MGD)
EFFLUENT DELTA T INFLUENT Month high low avg high low avg high avg hi~gh low avg JAN 54.0 52.6 53.2 72.6 71.3 71.9 18.8 18.7 2486 2486 2486 FEB 54.2 52.2 53.4 72.9 71.0 72.1 18.8 18.7 2486 2486 2486 MAR 53.2 4,9.1 51.1 71.9 60.4 68.7 19.1 17.6 2486 1862 2445 APR 52.5 48.6 50.1 71.2 66.4 68.8 19.2 18.7 2486 2356 2482 MAY 52.9 48.9 50.2 72.4 64.2 69.1 19.6 18.9 1862 1239 1290 JUN 53.2 48.6 51.0 72.3 59.0 68.5 19.2 17.0 2486 1862 2431 JUL 56.1 51.3 53.9 75.0 70.4 73.0 19.4 19.1 2486 2486 2486 AUG 55.6 51.8 53.5 74.7 71.2 72.8 19.7 19.3 2486 2486 2486 SEP 58.1 52.7 55.9 76.8 69.6 74.3 19.9 18.5 2486 1509 2395 OCT 57.5 53.8 55.6 76.4 71.5 74.2 19.0 18.6 2486 2027 2471 NOV 57.1 54.1 55.6 75.5 72.1 73.9 18.6 18.3 2486 2188 2476 DEC 56.1 53.5 55.2 74.6 71.6 73.6 18.8 18.4 2486 2486 2486 limit: -22 2760 The Influent and Effluent "high" and "low" temperture values correspond to the highest and lowest daily average value for that month. The Influent high and low temperadture does not necessarily correspond to the same day as the Effluent high and low temperature for that month. The "avg" temperature for Infiuent and Effluent is the average for the entire month. The Monthly Delta T "high" is the highest Delta T for a day of the month hased on daily average Influent and Effluent temperature values. The "Avg" temperature is calculated from Influent and Effluent monthly avg values.
DISCHARGE 001 TOTAL RESIDUAL TOTAL CHLORINE CHLORINE (daily max. ug/!) USED (lbs/day)
Month high low avg high low avg JAN 49 27 36 475 418 433 FEB 171 <10 27 475 259 430 MAR 54 14 32 504 300 418 APR 36 17 28 360 202 346 MAY 54 <13 22 216 134 194 JUN 45 16 , 31 418 274 381 JUL 28 <10 14 518 336 475 AUG 31 10 20 576 504 554 SEP 33 <7 17 691 317 591 OCT 43 <10 26 691 516 623 NOV 39 12 19 648 619 633 DEC 37 16 30 713 517 616 Note: The residual chlorine limits in Permit CA0003751, Order 90-09, is an instantaneous max of 200 ug/l, and includes a time-based limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.
Page 1lof 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/1)
CHROMIUM COPPER NICKEL *ZINC Month Influent Effluent Influent Efflucnt Influent Effluent Influent Effluent JAN ND(S) ND(5) DNQ(6) ND(5) 11 13 ND(5) ND(5)
FEB ND(5) ND(5) DNQ(8) DNQ(6) 11 14 DNQ(6) ND(5)
MAR ND(S) ND(S) ND(5) ND(S) ND(5) DNQ(6) 14 DNQ(8)
APR ND(S) ND(5) ND(S) ND(S) ND(5) ND(S) 25 ND(5)
MAY ND(5) ND(S) ND(5) DNQ(6) 10 11 18 DNQ(7)
JUN ND(S) ND(5) DNQ(5) ND(5) 14 15 16 11 JUL ND(5) ND(5) ND(S) ND(5) ND(5) ND(S) DNQ(9) ND(S)
AUG ND(S) ND(S) ND(5) ND(5) ND(5) ND(5) ND(5) ND(5)
SEP ND(S) ND(5) ND(S) ND(5) ND(5) DNQ(7) ND(S) ND(5)
OCT ND(5) ND(S) ND(S) DNQ(6) 6 DNQ(7) ND(S) ND(5)
NOV ND(S) DNQ(6) ND(S) ND(S) 7 10 ND(S) ND(5)
DEC ND(S) ND(S) ND(S) ND(S) 7 DNQ(8) ND(S) ND(S) 6-month median limit: 10 -10 - 30 - 70 DISCHARGE 001 VARIOUS ANNUAL ANALYSES (monthly avg. ug/i) 6-Mo. Med.
Effluent Parameter Influent Effluent Limit Arsenic 1.50 1.51 30 Cadmium 0.041 0.044 10 Cyanide ND(3) ND(3) 30 Lead DNQ(0.012) 0.020 10 Mercury DNQ(0.00037) DNQ(0.00034) 0.2 Silver DNQ(0.007) DNQ(0.008) 2.9 Titanium 3.1 2.2 none
- Phenolic Compounds ND(3.031) ND(3.031) 1S0 (non-chlorinated)
- Phenolic Cmpds ND(0.567) ND(0.567), 10 (chlorinated)
- PCB's ND(0.0658) DNQ(0.0658) none
- Results for analysis of 9 target compounds. The sum of the 9 detection limits is 8.42.
- Results for analysis of 6 target compounds. The sum of the 6 detection limits is 2.02.
- Detection limits shown arc the sum of individual detection limits for 7 target compounds.
DISCHARGE 001 AMMONIA (as N) (ug/i)
Month Influent Effluent JAN ND(50) ND(50)
FEB MAR APR DNQ(50) DNQ(50)
MAY JUN JUL 77 85 AUG SEP OCT ND(50) ND(50)
NOV DEC 6-month median limit: 3,060 Page2 of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)
Discharge: 001 002 003 004 001P Month Influent Effluent
.JAN 7.9 7.9 7.9 7.9 8.0 7.8 FEB 8.1 8.1 8.1 8.0 8.1 7.8 MAR 7.7 7.7 8.1 8.0 8.1 7.8 APR 7.8 7.9 7.9 7.7 8.0 7.7 MAY 7.8 7.7 7.9 7.8 7.8 7.7 JUN 7.8 7.8 7.9 7.8 7.9 7.8 JUL 8.1 8.1 8.1 8.0 8.0 7.8 AUG 8.0 8.0 7.9 7.9 8.0 7.9 SEP 7.8 7.8 8.0 8.0 8.0 7.9 OCT 7.7 7.8 7.9 7.8 7.8 '7.7 NOV 8.1 8.1 7.9 7.8 8.0 7.9 DEC 8.1 8.1 8.4 8.4 8.1 7.6 DISCHARGE 001F SUSPENDED GREASE & OIL (mg/I) SOLIDS (mg/I)
Month high avg high avg JAN ND(1.4) ND(1.4) DNQ(3) DNQ(3)
FEB ND(1.4) ND(I.4) DNQ(2) DNQ(2)
MAR ND(1.4) ND(1.4) DNQ(2) DNQ(2)
APR ND(1.4) ND(1.4) ND(2) ND(2)
- MAY DNQ(1.9) DNQ(1.9) 5 5 JUN ND(1.4) ND(1.4) DNQ(2). DNQ(2)
JUL ND(1.4) ND(1.4) DNQ(2) DNQ(2)
AUG ND(1.4) ND(I.4) ND(2) ND(2)
SEP DNQ(1.5) DNQ(1.5) DNQ(4) DNQ(4)
OCT ND(1.4) ND(1.4) ND(2) ND(2)
NOV ND(1.4) ND(1.4) ND(2) ND(2)~
DEC 8.3 DNO(4.2) 41 .10 limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Av~erage Limits.
DISCHARGE 001N (Monthly Summary of Weekly Data)
SUSPENDED SETTLEABLE GREASE & OIL (mag/l) SOLIDS (mg/I) SOLIDS (mllI)
Month high low avg high low avg high low avg JAN DNQ(1.4) ND(1.4) DNQ(1.4) 10 DNQ(3) 6 ND(0.1) ND(0.1) ND(0.1)
FEB* DNQ(1.6) ND(1.4) DNQ(1.4) 25 - 9 19 ND(0.1) ND(0.1) ND(0.1)
MAR 6.7 DNQ(1.4) <5.0 29 12 19 ND(0.1) ND(0.1) ND(O.1)
APR 6.6 DNQ(2.8) <5.0 40 9 22 ND(0.1) ND(0.1) ND(0.1)
MAY DNQ(3.4) DNQ(1.4) DNQ(1.4) 20 9 14 ND(0.1) ND(0.1) ND(0.1)
JUN 6.0 DNQ(2.8) <5.0 28 8 13 ND(0.1) ND(0.1) ND(0.1)
JUL DNQ(3.1) ND(1.4) DNQ(1.4) 13 5 10 ND(0.1) ND(0.1) NO(0.1)
.AUG DNQ(2.0) ND(1.4) *DNQ(1.4) 13 8 10 ND(0.1) *ND(0.1) ND(0.1)
SEP DNQ(2.0) ND(1.4) DNQ(1.4) 17 ND(3) 11 ND(0.1) ND(0.1) ND(0.1)
OCT DNQ(3.7) DNQ(1.4) DNQ(2.0) 15 6 11 ND(0.1) ND(0.1) ND(0.1)
NOV DNQ(1.4) DNQ(1.4) DNQ(1.4) 9 5 7 ND(0.1) ND(0.1) ND(0.1)
DEC DNO(1.4) DNO(1.4) DNO(1.4) 9 5 7 ND(0.1D ND(0.1) ND(0.1l limit: 20 -15 * -- 60 3.0 -1.0 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
Page3of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H 001L 001F Month Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu Ag Cd Cr Cu JAN FEB MAR ND)(S) ND(5) ND(S) ' 14 ND(5) ND(S) 15 36 ND(5) ND(5) ND(S) ND(S) ND(5) ND)(S) ND(5) 13 APR MAY JUN DNQ(8) ND(S) DNQ(9) ND(5) <10 ND(5) 19 52 DNQ(9) ND(5) ND(5) ND(5) 20 ND(S) ND(5) 11 JUL AUG SEP ND(S) ND(5) DNQ(8) DNQ(9) ND(S) ND(S) 23 45 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) 34 OCT NOV DEC ND(S) ND(S) 10 20 ND(S) ND(S) 14 32 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) '13 limit: none Note: 001D, 001H and 001L analyses performed on quarterly composites.
001F analyses performed quarterly on a composite of weekly samples.
DISCHARGE 001D, H, L, F, METALS (avg. ug/1) 001D 001 H 001L 001F Month Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn JAN FEB MAR DNQ(0.12) DNQ(5) ND(S) 108 DNQ(0.06) 15 12 14 ND(0.OS) ND(S) ND(S) <10 ND(0.0S) DNQ(7) DNQ(8) 43 APR MAY JUN ND(0.060) DNQ(7) ND(S) 114 ND(0.060) 16 13 21 ND(0.060) ND(S) ND(S) ND(S) ND(0.060) 15 DNQ(9) 23 JUL AUG SEP 0.41 DNQ(7) ND(S) 584 DNQ(0.14) 15 12 12 DNQ(0.077) ND(S) ND(S) ND(S) ND(0.060) 11 ND(S) 19 OCT NOV DEC ND(0.050) DNQ(7) ND(S) 61 ND(0.050) 12 <10 DNQ(9) ND(0.050) ND(S) ND(S) ND(S) ND(0.050) DNQ(8) ND(S) 53 limit: none Note: 001D, 001H and 001L analyses performed on quarterly composites.
001F analyses performed quarterly on a composite of weekly samples.
Page4of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (mg/I)
Month 001D* 001G 001H 001I 001J 001K 001L 001M 001P 002 003 JAN <5 ND(2,) ND(2) ND(2) 16 ND(2) 6 FEB <5 ND(2) ND(2) ND(2) 7 DNQ(2) DNQ(3)
MAR <5 ND(2) DNQ(2) ND(2) ND(2) DNQ(4) 20 DNQ(3) DNQ(2)
APR <5 ND(2) DNQ(2) ND(2) -24 13 23 MAY <5 ND(2) DNQ(4) ND(2) NO(2) <5 DNQ(3) 31 JUN '<5 ND(2) ND(2) ND(2) ND(2) <5 DNQ(2) DNQ(2)
JUL 8 ND(2) ND(2) ND(2) 9 8 7 AUG <5 ND(2) ND(2) ND(2) DNQ(2) ND(2) ND(2) DNQ(3)
SEP <5 ND(2) ND(2) ND(2) <5 ND(2) DNQ(2) DNQ(3)
OCT <5 ND(2) DNQ(2) ND(2) ND(2) 8 <5 6 NOV <5 ND(2) ND(2) ND(2) 9 DNQ(2) 5 DEC 16 DNQ(2) ND(2) ND(2) <5 ND(2) DNQ(3)
Limit: 30 30 30 30 30 30 30 30 30 30
- Discharges from 001D are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 001I and 001K during 2011.
Blank spots for other discharge points indicate that no discharge occurred during that particular month.
QUARTERLY GREASE & OIL Averages by Month (mag/I)
Month 001D* 001G 001H 001I 001J 001K 001L 001M 001P 002 003 004 JAN DNQ(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
FEB* DNQ(4.0)
MAR 5.5 - ND(1.4) ND(1.4)
APR DNQ(1.7) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
MAY DNQ(3.1) ND(1.4) ND(1.4)
JUN 7.0 ND(1.4)
JUL <5 ND(!.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
AUG <5 DNQ(1.4)
SEP DNQ(3.2) ND(1.4)
OCT <5 ND(1.4) ND(1.4) ND(i.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)
NOV DNQ(2.3)
DEC ND(1.4) ND(1.4)
Limit: 15 15 15 15 15 15 15 15 15 15 15 15
- Discharges from 001D are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K during 2011.
Page 5 of 6
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tu2 and tue)
ACUTE Test 6-Month Test Month Resnlt Median Result JAN 0.00 0.00 1.0 FEB MAR APR 0.00 0.00 1.0 MAY JUN JUL 0.00 0.00 1.0 AUG SEP OCT NOV DEC 0.00 0.00 1.0 6-month median limit: 0.26 5.1
- This parameter is monitored for the State Ocean Plan instead of the NPDES Permit. A value of 1.0 indicates no chronic toxicity.
DISCHARGE 001N ANNUAL ANALYSES Sludge Parameter Result Limit Percent Moisture 90.0% None Total Kjeldahil Nitrogen 940 mg/kg None Ammonia (N) 55 mg/kg None Nitrate (N) 5.7 mg/kg None Total Phosphorus 170 mg/kg None pH. 7.0 None Oil and Grease DNQ(4.9) mg/kg None Boron DNQ(9.2) mg/kg None Cadmium ND(0.25) mg/kg lOX STLC*
Copper DNQ(4.9) mg/kg 10 X STLC Chromium ND(0.88) mg/kg loX STLC Lead ND(0.15) mg/kg loX STLC Nickel ND(0.41) mg/kg loX STLC Mercury ND(0.090) mg/kg loX STLC Zinc DNQ(11) mg/kg 10OX STLC Volume 0l71 fnn* NNnni*
Note: Annual samples were collected in October.
- STLC = Soluble Threshold Limit Concentration Page 6 of 6
Annual Discharge Monitoring Report APPENDIX 3 GRAPHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT 0
Temperature ( F) 90.0 ,
80.0 70.0-1 60.0 S50.0 S40.0 High 30.0+/-
20.0+
10.0 L Avrag 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 DISCHARGE 001 EFFLUENT 0
Temperature ( F) 90.0T 80.0 70.0 60.0
'~50.0 2~40.0 30.0+ @High
+Average 20.0+
4$----Low 10.0 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Page 1lof 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow (MGD) 3000 25O00 2000-
.21500o m
.2 1000o 4Averagej 500 -
01 I I I I I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 DISCHARGE 001 EFFLUENT 0
Monthly Delta T ( F) 25 -
.5.
20 -
S15-S10-
@ Limit
@High
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Total Chlorine Residual, ug/1 180 160 *Average 140 *o 120 e100o 640 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the reporting limit.
DISCHARGE 001 Total Chlorine Used, pounds per day 800-700-600
- 500-200
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Copper (monthly average, ug/l) 12T 10 I * * * * * * *-* "* *-*
-4'- Permit Limit and Reporting Limit i SInfluent 8 -
4EffluentI
~g61 4-2-
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit (the most conservative limit) is plotted on this chart (this is also the analytical reporting limit).
The daily maximum limit for Copper is 50 ng/I.
DISCHARGE 001 Nickel (monthly average, ug/l)l 35 30:I U Discharge Permit Limit 25 -hlnfnuent
--4,-Effiueni!
-- ** mAnalytical Reporting Limit 20+
15 q 10 x 5
0 10 10 10 10 10 10 10 10 10 10 10 10 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit (the most conservative limit) is plotted on this chart.
The daily maximum limit for Nickel is 100 ug/I.
Page4ofl15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zinc (monthly average, ug/i) 80 70 60 U*Discharge Permit Limit L Influsent 50 "'-' Effluent
"'-'Analytical Reporting Limit i* 40 30 20 10 01 I I I U U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001 Chromium (monthly average, ug/l) 12T 10:
U Permit Limit and Reparting Limit 8 -a-- lolisseul Effluent
=
4 2
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011!
Note: The analyte was not detected at or above the detection limit for values plotted at zero.
The 6-month median limit is plotted on this chart. The daily maximum limit for chromium is 40 ug/h.
The discharge permit limit and the analytical reporting limit are the same (10 ug/h).
Page 5 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 8.6 8.4 8.2 8.0 7.8 7.6 7.4 7.2 i JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Several data points on this chart overlap.
Discharge 001 Ammonia (as N, ug/l) 3500 3000 2500- U 6-Month Median Lim~it
- infiuent 2000 SEffiuen t
= 1500 1000 500 0;
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Influent and Effluent values overlap at three points on this plot.
Page 6of15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Oil & Grease (Maximum, mg/i) 25.0 20.0 15.0 no 10.0 5.0 0.0 t = I* f
- JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit. December's monthly average was below the monthly average limit.
DISCHARGE 001F Suspended Solids
- o (Maximum, mg/I) 12*V 100:
U-Daily Manimum Limit 80+/- -- -Monthly Average Limit 4 Sample Resolt (Maoimum)
-4"-Analytical Reporting Limit 60 40 3 3 3 3/
20+
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Maximum values are plotted. December's monthly average was below the monthly average limit.
Page 7 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 2
0"" T I I I TTI JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit.
High and average values overlap at four points on this plot.
70[ --4-AergI 50
- ~4o 30 20 2011 DISCHARGE 001N Settleable Solids (mi/l) 3.5 3:
2.5----DiyMimmLmt]
2 -~O.---Modhly Average LimitI 1.5 *Aveage 0.5 U, i i
- i l i JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN 2011 Note: Values plotted at zero were below the detection limit.
High, average, and low values overlap at twelve points on this plot.
Page8of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D QuarterlyMetals (ug/h) 25 20
- Cadmium ilver
[ *Chromium
- Copper I
15 10 5
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001D QuarterlyMetals (ug/1) 700 600
- Lead E[]Nickel Zinci i 5000
- 4001 3000 I
ecr 200 +
100-0 JAN FEB I
MAR APR MAY I
2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page9of15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Quarterly Metals (ug/I) 40T 35 1 30 - U Cadmium I Chromiuml 25+
20 15+
10-4 opeI 5-0 JAN FEB MAR 1, APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 00IF Quarterly Metals (ug/1) 50-lENickell[
40
- Lead I 30-20 4 10 I I
0* I U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 10 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001H Quarterly Metals (ug/l)
[]Silver 60 *Cadmium
- Chromium 50
- oper 40 se30 20 10 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 00111 Quarterly Metals (ug/l) 25-
- Nickel 20 4 U Lead
'5 +
10 -
5.-
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 11 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001L Quarterly Metals (ug/1) 20 18 16 I"7Siver~
- Cadmium 14
- Chromium 12
- Copper 8
6 4
2 0
JAN FEB MIAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001L Quarterly Metals (ug/1) 14 12 10 6 *Nickel U Lead 4
2 0
JAN FEB MAR APR MAY JUJN JUL AUG SEP OCT NOV DEC 2011 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 12 of15S
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS (Average, rag/I) 35 30 *. *.* *.* *
--- *-* m* " l l 1 --
- Monthly Average Limit 25
@001D S20
-- 41"- O01H 10 5-
/
o . -- * : = 7 -- -- -- a ------ m JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS (Average, mg/I) 35 30 25 U Monthly Average Limit 20
- "O-- 01L E15 -4001M 10+/-
5-0 Ot A A S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS (Average, mag/l) 35 no JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
There is no limit for discharge 003. Therefore the May 003 value of 31 does not exceed a limit.
Page 13 of15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (Average, mg/l) 12 001D 10 - O1 8 *Monthly Average Lim~it JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit. Less than values are plotted at the value.
QUARTERLY OIL & GREASE (Average, mg/I) 16-14
-001J 12- /001L
/001M 10
- Nl~onthly Average Limit 6+
4 2
0 U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit.
QUARTERLY OIL & GREASE (Average, mag/I) 16 U U U U U U U U U U U U 14 12 -snip 002 10
~003 004 6 *ManthIy Average Limit 2
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Note: Values plotted at zero were below the detection limit.
Page 14 of 15
2011 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY (6-Month Median) 6.0 5.0 -- - - -- -- -- -- -- -- -- --
"=4.0 l Chronic Bioassay Results
"~-0--6-mo. Median Acute Limit
.p3.0 -*- Acute Bioassay Results
.* "~-I- Chronic Limit S2.0 ""-4-Acute 6-month Median JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2011 Page 15 ofl5s
Annual Discharge Monitoring Report APPENDIX 4
SUMMARY
OF RWMP MONITORING FOR 2011 RWMP 1st Survey 2nd Survey 3rd Survey 4th Survey SuyStations/ Completion Completion Completion Completion SuySurveys Stations/ Stations/ Stations/ Stations/
______________per Year Dates Dates Dates Dates Horizontal Band Transects 14 / 4x Mar 03 Jun 07 Sep 09 Dec 21 Vertical Band Transects 5/ 4x Mar 15 Jun 01 Aug 01 Dec 21 Benthic Stations 8/ 4x Feb 28 Jun 13 Aug 22 Nov 18 Fish Observation Transects 12 / 4x Apr 14 Jun 29 Sep 19 Dec 14 Bull Kelp Census */1lx n/a n/a n/a Oct 13 Temperature Monitoringl 24 / ** Jan-Mar Apr-Jun Jul-Sep Oct-Dec
- Diablo Cove census.
- Temperature measured throughout the year at 20 minute intervals (14 intertidal and 10 subtidal stations).
Pacific Gas and Electric Company Diablo Canyon Power Plant
- lcticCompany P.O. Box 56 Avila Beach, CA 93424 PG&E Letter DCL-2013-'506
[ ~ CIWQS ElectronicWebSubmission Application February 27, 2013 California Regional Water Quality Control Boar'd Central Coast Region Attn: Monitoring and Reporting Review Section 895 Aerovista, Suite #101 San Luis Obispo, CA 93401-7906 In accordance with Order 90-09, NPDES No. CA0003751, the 2012 Annual Report on Discharge Monitoring at Diablo Canyon Power Plant is provided. This letter and accompanying annual data summary tables and plots are attached to the CIWQS application submittal.
Facility Name: Faciity ame:Diablo Canyon Power Plant Address: .P.O. Box 56 Avila Beach, CA 93424 Contact Person: Bryan K. Cunningham Job
Title:
Supervisor, Environmental Operations Phone Number: (805) 545-4439 WDR/NPDES Order Number: Order No. 90-09, NPDES No. CA0003751 Type of Report: (check one) QUARTERLY ANNUAL 0] I[I Quarter: (check one): I st 2nd 3 rd 4th 0] 0] 0] 0]
Year: '2012 (Annual Reports for DCPP are Jan-Dec)
Violation(s) (Place an X by the appropriate choice): [] No 0] Yes Note:(there are no violations to report)
Reference "Review of Compliance Record and CorrectiveActions" Section
PG&E Letter CRWQCB DCL-201 Central 3-506 Coast Region February 27, 2013 Page 2 If Yes is marked (complete a-g):
a) Parameter(s) in Violation:
b) Section(s) of WDRINPDES Violated:
c) Reported Value(s) d) WDR/NPDES Limit/Condition:
e) Dates of Violation(s)
(reference page of report/data sheet):
f) Explanation of Cause(s): (If "YES", see overview section of attached report)
(attach additional information as needed) g) Corrective Action(s): (If "YES", see overview section of attached report)
(attach additional information as needed)
PG&E Letter DCL-2013-506 CRWQCB Central Coast Region February 27, 2013 Page 3 I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly .responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. The results of the influent and effluent monitoring presented are the observed results of the measurements and analyses required by the monitoring program, and is neither an assertion of the adequacy of anY instrument reading or analytical result, noran endorsement of the appropriateness of any analytical or measurement procedure. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
If you have any questions or concerns, or require additional information, please contact Bryan Cunningham at (805) 545-4439.
- Sincerely, Name: Kenneth W. Cortese
Title:
Manager, Chemistry and Environmental Operations- Diablo Canyon Power Plant 201 3506/j1kbkc
PG&E Letter DCL-2013-506 CRWQCB Central Coast Region February 27, 2013 Page 4 cc: PDF Formatted Copy of ClWQS Application Submittal:
Regional Administrator U.S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 Hardcopy Print-Out of CIWQS Application Submittal:
U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-0001 Thomas Hipschman Senior Resident Inspector U.S. Nuclear Regulatory Commission Diablo Canyon Power Plant 104/5
CIWQS Web Application Submittal Print Out and Attached Supporting Documents Summary: Annual eSMR SMR (PDF Report MONNPDES ) report for 2012 Summary: Annual SMR ( MONNPDES ) report for 2012 submitted by Kenneth Cortese(No Title) on 02/28/2013.
Facility Name: PG&E DIABLO CANYON POWER PLANT Order Number: R3-1990-0009 Waterboard Office: Region 3 - Central Coast Case Worker: Peter Von Langen Report Effective Dates: 01/01/2012 - 12/31/2012 No Discharge Periods
¶~
LSiabIo IDlablo
~Name~
M-UUi M-UUI
4
~ . ~ Wescriptlnn: ;~..... 4:,
5
-~ Dates~i:~ 4 . ~ ~ Comment ~ ~
L*
Jii~ablo M-00lDL Diablo M-001F Diablo M-001G Diablo M-001H Diablo M-001 1 01/01/2012 - 12/31/2012 ______________________________________
D~iablo M-00lJ Diablo M-001 K 01/01/2012 - 12/31/2012 laiabl M-001IL IDiablo M-001M IDiablo M-00]IN Diablo M-001P Diablo M-002 1Diablo M-003 D~iablo M-004 Diablo M-005
'Diablo M-008_____________________________________________
fliablo M-009 D*iablo M-013 Diablo M-0 I5 Diablo M-016 0l/01/2012 -12/31/2012__________________________________________
jaliMablo__________M-017_______ 0/0/011/01/011/2012___________-_____12/_______1/20_________2_
t'iablo M-INF__________________________ _____________________________ ______
Self-Determined Violations No Violations Entered Attachments Attachment I - 2012 DCPP Annual Report Overview Section.pdf 2012 Annual Summary Report on Discharge 02/27/2013 Monitoring at Diablo Canyon Power Plant Attachment 2 -2012 DCPP Annual Rpt Appendix-I NPDES DCPP NPDES Discharge Points Table 02/27/2013 Discharge Points.pdfl Attachment 3 -2012 DCPP' Annual Rpt Appendix-2 Tabular Tabular Summaries of tnftuent and Effluent 02/27/2013 Summaries of Monitoring.pdf Monitoring Attachment 4 -2012 DCPP Annual Rpt Appendix-3 Graphical Graphical Summaries of tnfluent and Effluent . 02/27/201 3 Summaries of Monitoring.pdf Monitoring Attachment 5 -2012 DCP Annual Rpt Appendix:-4 Summary of Summary of Receiving Water Monitoring 02/27/2013 RWMP Monitoring.pdf Program (RWMP) Activities ___________
Cover Letter (Uploaded File)
- GE DCL20 13506 2012 NPDES Annual Discharge Monitoring Report.pdfl 20 13-02-27 16:45:36.0 702040 bytes
Data Summary Analytical Results No Analytical Data Measurements Available / Reported Calculated Values
.Loctatini: *Parqam'eter "-C..* Calcuiaioln.Tye Smle. .-Anaily's:la Quahlfler. [Reaut.* ,Unita:,.m.M~etbo'd Milnimum. Reporing* *e~yenS*QA~ * ::* ~~~ts r Dta'Souree*
No Calculated Data Measurements Available!/ Reported Certlifcate I certify under penalty of law that all data submitted, including attachments, were prepared under my direction in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of a fine or imprisonment, for knowing violations. I certify that I am Kenneth Cortese and am authorized to submit this report on behalf of PG&E DIABLO CANYON POWER PLANT. I understand that I am submitting a Annual SMR ( MONNPDES )
report for 2012 and I understand that data submitted in this report can be used by authorized agencies for water quality management related analyses and enforcement actions, if required. I certify that I have not violated any term in my Electronic Signature Agreement~and that I am otherwise without any reason to believe that the confidentiality of my password and challenge question answers have been compromised now or at any time prior to this submission. I understand that this attestation of fact pertains to the implementation, oversight, and enforcement of a federal environmental program and must be tine to the best of my knowledge.
Name: Kenneth Cortese
Title:
No Title
ANNUAL
SUMMARY
REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2012
PG&E Letter No. DCL-2013-506 2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS PAGE OVERVIEW 1
SUMMARY
OF MONITORING PROGRAM 1 A. Monitoring of Plant Influent and Effluent* I
- 1. Monitoring Data 1
- 2. Facility Operating and Maintenance Manual 1
- 3. Laboratories Used to Monitor Compliance 2
- 4. Review Of Compliance Record and Corrective Actions , ,2 B. Monitoring of Receiving Water '5
- 1. Ecological Studies at Diablo Canyon 5
- 2. In-Situ Bioassay 5 C. Sodium Bromide Treatment Program 5 D. Errata .5 APPENDICES Appendix 1- NPDES Discharge Points Appendix 2- Tabular Summaries of Influent and Effluent Monitoring Appendix 3- Graphical Summaries, of Influent and Effluent Monitoring Appendix 4- Summary of RWMP Monitoring for 2012
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant OVERVIEW This annual summary report follows the format used in quarterly monitoring reports. Analytical results below the respective analytical detection limit (ND or non-detect) are plotted as a "zero" value in accordance with ELAP guidance. Results between the analytical detection limit and reporting (quantitation) limits are plotted at the value and shown as 'DNO' in the tabular summaries as is done for CIWQS reports. Less-than results are typically reported to express an average of values that include non-detects and at least one positive result.
These less-than results are plotted conservatively at the value. During 2012, discharges occurred from all discharge paths except 0011I, 001K, 016, and 017.
California Ocean Plan Table B substances that were not analyzed for have not been added to the discharge*..
stream. The substances listed in Table B in the California Ocean Plan were each analyzed for and reported in the permit renewal application and application updates for Diablo Canyon Power Plant (DCPP) submitted in October 1994, January 2001, and April 2011. There have been no changes in activities conducted at the plant that would have significantly affected the results previously reported in the above referenced documents.
SUMMARY
OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent
- 1. Monitoring Data
- a. Appendix 1 provides a list of discharge path names for ease of reference. Appendix 2 contains monitoring data in tabular form. Appendix 3 contains monitoring data in graphical form.
- b. Annual oil and grease analyses were performed in October on StormwaterlYard Drain Discharges 005, 008, 009, 013, and 015. Results are listed below. No discharges that resulted in adequate sample quantities occurred from pathway 016, and no discharge occurred from pathway 017 during 2012.
005 non-detect - ND(1 .4 mg/I) 008 non-detect - ND(1 .4 mg/I) 009 Value. below reporting quantity - DNQ(2.3 mag/I) 013 non-detect - ND(1 .4 mg/I) 015 Value below reporting quantity - DNQ(2.5 mg/I)
C. In October, Discharge 001 D (Liquid Radioactive Waste Treatment System) annual grab samples for lithium, boron, and hydrazine were collected and analyzed. The results were 0.076 mag/I, 804 mg/I, and DNQ(0.002) mg/I, respectively.
- 2. Facility Operating and Maintenance Manual Pacific Gas and Electric Company (PG&E) maintains a multiple volume Plant Manual at DCPP that c:ontains procedures used for operation and maintenance activities at the plant, including those activities that relate to wastewater handling, treatment, sampling, analysis and discharge.
Plant procedures are prepared and reviewed by DCPP Staff and approved by DCPP Management. The facility conducts biennial internal audits that review NPDES procedures contained in the plant manual.
Ongoing reviews of plant procedures are conducted to assure that the manual remains valid, current, and complete for the facility.
1
- 3. Laboratories Used to Monitor Compliance The following laboratories were used during 2012 for monitoring compliance. The laboratories are certified by appropriate agencies for the tests/analyses performed. As part of the on-going annual certification process, these laboratories take part in annual performance evaluation testing.
- a. PG&E Chemistry Laboratory, DCPP, Avila Beach, California (EPA Lab # CA01036)
- b. Aquatic Bioassay Consulting Laboratories, Ventura, California (EPA Lab # CA01907)
- c. ALS Environmental (formerly Columbia Analytical Services), Kelso, Washington (EPA Lab #
WA00035)
- e. Abalone Coast Analytical, San Luis Obispo, California (EPA Lab # CA02661)
- f. Oilfield Environmental and Compliance, Santa Maria, California (EPA Lab # CA02438)
- g. E. S. Babcock & Sons, Inc., Environmental Laboratories, Riverside, California (EPA Lab # CA00102)
- h. BSK Associates, Fresno, California (EPA Lab # CA00079)
- 4. Review of Compliance Record and Corrective Actions
- a. Circulating Water Pump Chlorination/Bromination Monitoring The 2012 quarterly NPDES reports discuss chlorination cycles when discharge monitoring was interrupted. These events are listed below with brief descriptions of the cause and respective corrective action. When these monitoring interruptions occurred, engineering evaluations (as approved by the CCRWQCB January 13, 1994; PG&E Letter No. DCL-94-002) were performed.
Detailed descriptions of these evaluations are included in the quarterly reports. Evaluations concluded that discharge chlorine limits were not exceeded during these events.
Date J1Chlorination Monitoring Cycle11 Interruptions Cause Corrective Action 01 /16/12 to Unit 1 & 2 Cross-tie between monitor Monitor sample line cross-tie 01/17/12 11 Readings sample lines left open valves closed 06/07/12 to Unit 2 Discharge monitor quality check Mntrrclbae 06/13/12 36 Readings low out of tolerance _______________
09/19112 to Unit 2 092/2 7 edns Monitor reagent pump failed ,Reagent pump replaced
- b. Closed Cooling Water Releases During 2012, maintenance activities that required draining of closed cooling water systems were performed, and are summarized below. PG&E received concurrence from the CCRWQCB in response to letters dated July 19, 1995 (PG&E Letter DCL-95-1 56), May 23, 1996 (PG&E Letter DCL-96-522), and May 19, 1997 (PG&E Letter DCL-97-533) regarding the use of glutaraldehyde and isothiazolin to control microbiological growth and corrosion in DCPP's freshwater closed cooling water systems. Any drainage from these systems is discharged at a flow-rate such that the chronic toxicity level is below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.
2
The volumes of cooling water drained in 2012 from the component cooling water (COW), service cooling water (SOW), and intake cooling water (lOW) systems are presented below. The glutaraldehyde (Glut) and isothiazoline (Iso) concentrations presented in the table are system concentrations, not concentrations at the point of discharge to receiving water.
VolumGlutTotal Oil & Rao Date System (glons)e (Glut so (mg/I] Suspended Grease Cmet
__galons__(mg/I)_.. Solids (mag/I) (mgfl) Cmet 01/04/12 Unit 1 SOW 12,000 < 50 5.4 < 2.0 < 1.4 Routine Maintenance 01/13/12 Unit 1 SOW 10 114 5.4 n/a n/a Routine Maintenance 01/113/12 Unit 2 S0W 10 115 4.0 n/a n/a Routine Maintenance 01125/12 Unit 2 SOW 57 < 50 4.0 n/a n/a Routine Maintenance 02/08/12 Unit 2 SCW 30 111 5.2 n/a n/a Routine Maintenance 02/12/12 ' Unit 11ICW 10 112 0.7 n/a n/a Routine Maintenance 03/06/12 Unit 2 SOW. 33,200 < 50 5.8 < 2.0 < 1.4 Routine Maintenance 03/13/12 Unit 2 S0W 550 < 50 5.8 n/a n/a Routine Maintenance 03/1 5/12 Unit 2 SOW 70 < 50 5.8 n/a n/a Routine Maintenance 03/26/12 Unit 2 lOW 9 148 0.7 n/a n/a Routine Maintenance 04/16/12 Unit 1 lCW 10 65 2.4 n/a n/a Routine Maintenance 04/25/12 Unit I SOW 9,500 86 3.4 n/a n/a Routine Maintenance 05/19/12 Unit I COW 181,500 125 0.0 < 2.0 1.5 Routine Maintenance 06/11/12 Unit 1 lOW 15 64 4.5 n/a n/a Routine Maintenance 06/26/12 Unit 1 COW 3,200 177 0.0 < 2.0 < 1.4 Routine Maintenance 06/28/12 Unit 2 SOW 33,200 < 50 4.7 7.2 < 1.4 Routine Maintenance 08/05/12 Unit 1 SOW 10 < 50 4.1 n/a n/a Routine Maintenance 08/14/12 Unit 1 SOW 33,500 < 50 4.1 3.5 < 1.4 Routine Maintenance 12/04/12 Unit 2 lOW 3,300 63 2.5 4.2 n/a Routine Maintenance 12/19/12 Unit I lCW 3,400 < 50 5.8 n/a n/a Routine Maintenance
- c. Exceedances None.
- d. Bypasses
- 1. On April 30, 2012, it was discovered that operator action resulted in a bypass of normal discharge pathway 001 F. On April 25th at approximately 23:00, during non-routine plant conditions, operators routed freshwater originating from the plant fire water system to outfall via the clean side of the turbine building sump. Normal routing of this discharge is to the dirty side of the turbine building sump, through the oily water separator system, then overboard. The bypass occurred during power plant recovery efforts caused by a loss of all main seawater circulator pumps, and subsequent forced outage of Unit 2 while Unit I was in a scheduled refueling outage.
Routing of the fire water to the clean side of the sump was determined to be inadvertent, as the operators did not intend to purposefully circumvent the normal 001 F permit flow path. At the beginning of the event an assumption had been made that staged hosing in the turbine building was routed to the dirty side of the sump system, when in fact it was routed to the clean side of the sump. It was later found that a verification/review of the configuration to insure appropriate routing before use had also not been completed.
3
Contributing factors to the inadvertent bypass included a significant amount of plant operator burdens during the period. The specific plant conditions experienced were non-routine, having never occurred prior in the operating history of the facility. The shutdown of all main seawater circulators, and subsequent operating unit trip, was due to an excessive influx of sea saips in the near shore coastal region, which adversely impacted the plant intake cove and intake systems.
Note: The plant auxiliary salt water system once-through cooling remained in continuous operation during the period.
Upon plant management discovery of the 001 F pathway bypass on April 30t', samples of the freshwater flow were obtained, and the bypass subsequently terminated. The samples indicted total suspended solids (TSS) of < 2.0 mg/L, conductivity of 126 uS/cm, a pH of 7.7, and a negative result for grease and oil using a camphor screening test. These results confirmed the quality of the freshwater from the plant fire water system was good, as is routinely expected from that resource, and that 001 Foutfall constituent limitations were most likely never challenged during the bypass period. Regional Board Staff (von Lan(*en) was notified via phone message of the bypass event following the initial discovery on April 30"'. In a follow-up phone conversation conducted on May 1st, the facility was directed to provide a description of the event, and any subsequent evaluation or actions, in the 2" quarter discharge self-monitoring report.
The estimated volume of freshwater routed directly to the clean side of the turbine building sump from April 2 51h to April 30* was 609,900 gallons, or approximately 144,000 gallons per day. Even though the event was linked to an off-normal and very rare plant condition, the facility is implementing corrective actions to reduce and/or eliminate the potential for event reoccurrence.
Relevant plant operating procedures were revised to more clearly outline operator actions and expectations in the event: of a similar situation, as well as to enhance the verification of equipment alignment prior to routing,water from secondary plant activities to the turbine building sump.
system.
- 2. On October 12, 2012, during routine shift inspections the Unit I turbine building sump was discovered overflowing from the clean-side standpipe directly to the once-though cooling system, and plant outfall. The cause was determined to be a loss of sump pump operation resulting in an inadvertent bypass of the normal discharge pathway which routes sump wastewater through the oily water separator (OWS) system prior to outfall. Samples of the overflow were taken. Analysis indicated total suspended solids and oil/grease levels were well below the NPDES limitations for discharge pathway 001 F. The overflow was estimated at a rate of 3 to 5 gallons per minute for an indeterminate period (exact time of pump function loss unknown), but which is approximated to be less than the period elapsed since the prior sump inspection; < 12-hours.
The loss of pump operations was determined to be caused by an.Out of tolerance liquid level indicator transducer. One function of the~level indicator is to stop pump operation when low liquid levels (near-empty) conditions exist within the sump. Output from the faulty transducer resulted in low level indications when, sump volume was actually at high levels. The transducer was recalibrated, and the turbine building sump level indicator and associated sump pumps were returned to normal operations.
Notification of the inadvertent 001 F pathway bypass was made to the Regional Water Quality Control Board on the same day, within the 24-hour reporting requirement. A follow-up communication was made on October 1 51h to provide analysis results, and request guidance on further. reporting of the event. Regional Board staff (von Langen) advised that the event and corrective actions be documented in the 4th quarter discharge self-monitoring report.
4
B. Monitoring of Receiving Water
- 1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2012 under the Receiving Water Monitoring Program (RWMP) as requested in a letter from the Central Coast Regional Water Quality Control Board (CCRWQCB) dated December 9, 1998, and as detailed in a letter from PG&E dated January 8, 1999 (DCL-99-503). This program includes tasks from the Ecological Monitoring Program (EMP) with additional stations and increased sampling frequencies. This program replaces the EMP and the Thermal Effects Monitoring Program (TEMP). Several one-year-only tasks outlined in the above letters were completed in 1999 and were not requested to be performed in 2012. Results of 2011 RWMP data were submitted to the CCRWQCB on April 27, 2012. A table in Appendix 4 summarizes requirements and completed monitoring tasks for 2012.
- 2. In Situ Bioassay Results of the Mussel Watch Program are reported to the CCRWQCB directly by the California Department of Fish and Game (CDF&G) in the agency's periodic report for this program.
C. Sodium Bromide Treatment Program DCPP continued its integrated sodium bromide and "foul release coating" strategy to control macrofouling in the Circulating Water System (CWS). The treatment program consists of six 20-minute injections (at four hour
- intervals) of a blend of generic sodium bromide and sodium hypochlorite into DCPP's seawater intake conduits. Each injection attempts to achieve a target concentration of 200 parts per billion (ppb) Total Residual Oxidant (TRO) at the inlet waterbox of the main condensers. Discharge TRO, measured at the plant outfall, remained below NPDES limitations. Typically, discharge values were between 20 ppb and 50 ppb. In conjunction with the chemical treatment, untreated portions of the cooling water system were previously painted with a non-toxic "foul release coating" to reduce or prevent attachment of fouling organisms.
- Both conduits of Unit I were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day through most of 2012. There were brief interruptions in January, February, March, and early April for system maintenance activities. Unit 1 injections were shut down in mid=April for the 1R17 refueling outage. Simultaneous injections were restarted in early June. There were additional brief interruptions in mid-June, November and December for chemical injection system maintenance, and conduit cleaning activities.
Both conduits of Unit 2 were treated with simultaneous injections of sodium bromide and sodium hypochlonte six times a day through most of 2012. There were brief interruptions in January and February for chemical injection system maintenance, and conduit cleaning activities. Additional brief interruptions also occurred in April due to a large influx of sea saips that necessitated shut down of Unit 2 main seawater circulating pumps;
.and in June, October, and November due to system maintenance activities.
D. Errata Two reporting errors have been identified in the electronic 4"' quarter 2012 discharge self-monitoring report (eSMR) that was submitted via CIWOS. The units for analysis results of Ammonia, Total (as N) at locations M-001 and M-INF (only) were incorrectly reported as p~g/L. The correct units for both these results are mg/L.
5
Annual Discharge Monitoring Report APPEN DIX I DIABLO CANYON POWER PLANT NPDES DISCHARGE POINTS DISCHARGE NUMBER DESCRIPTION 001 Once-Though Cooling Water 001 A Firewater Systems 001 B Auxiliary Salt Water Cooling System 001 C Dishare Deeted 001 D Liquid Radioactive Waste Treatment System 001 E Service Cooling Water System 001 F Turbine Building Sump 001 G Make-Up Water System Waste Effluent 001 H Condensate Demineralizer Regenerant 001 I Seawater Evaporator Blowdown 001 J Condensate Pumps Discharge Header Overboard 001 K Condenser Tube Sheet Leak Detection Dump Tank Overboard 001 L Steam Generator Blowdown 001 M Wastewater Holding and Treatment System 001 N Sanitary Wastewater Treatment 001 P Seawater Reverse Osmosis System Blowdown 002 Intake Structure Building Floor Drains 003 Intake Screen Wash 004 Bio Lab and Storm Water Runoff 005, 008, 009,,,013, 014, 015 Yard Storm Drains 006, 007, 010, 011, 012 Storm Water Runoff 016 Bio Lab Seawater Supply Pump Valve Drain 017 Seawater Reverse Osmosis System
______________________Blowdown Drain
Annual Discharge Monitoring Report APPENDIX 2 TABULAR SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 TEMPERATURE (DEG F) FLOW (MGD)
INFLUENT EFFLUENT DELTA T
- Month high low avg highi low avg* high avg high low avg JAN 55.6 52.5 54.1 74.4 71.5 73.0 19.4 18.9 2486 2486 2486 FEB 54.8 50.1 52.2 74.5 68.7 71.3 20.2 19.1 2486 1862 2400 MAR 53.1 49.0 50.8 72.1 71.8 74.1 18.9 18.5 2486 1509 2395 APR 52.6 48.4 50.2 71.1 53.5 65.9 19.4 15.7 2486 32 2045 MAY 52.2 48.7 50.2 69.9 66.5 67.9 18.0 17.7 1279 1279 1279 JUN 56.6 49.1 52.3 72.5 62.8 68.1 18.4 15.3 2486 1279 2081 JUL 55.9 50.7 53.0 74.1 68.9 71.3 18.4 18.2 2486 2486 2486 AUG 57.0 52.0 54.0 75.5 70.3 75.3 18.6 18.3 2486 2486 2486 SEP 57.9 53.9 55.6 76.6 71.8 74.1 18.9 18.5 2486 1509 2395 OCT 59.3 55.6 57.2 78.0 74.9 65.0 19.4 17.7 2486 2132 2449 NOV 58.6 55.0 57.3 77.9 73.6 76.2 20.6 19.0 2486 1862 2402 DEC 59.7 54.3 56.8 78.5 72.8 75.5 19.3 18.1 2486 1874 2371 limit: -- 22 2760 The lnfluent and Effluent "high" and "low" temperture values correspond to the highest and lowest daily average value for that month. The lnfluent high and low temperature does not necessarily correspond to the same day as the Effluent high and low temperature for that month. The "avg" temperature for lnfluent and Effluent is the average for the entire mouth. The Monthly Delta T "high" is the highest Delta T for a day of the month based on daily average Influesst and Effluent temperature values. The "avg" temperature is calculated from Influent and Effluent moathly avg values.
DISCHARGE 001 TOTAL RESIDUAL TOTAL CHLORINE CHLORINE (daily max. ug/I) USED (lbs/day)
Month higlh low avg high low avg JAN 54 31 '41 576 355 516 FEB 65 17 44 475 158 353 MAR 66 31 49 4*03 288 370 APR.* 63" *nla 41 374 *'n/a 256 MAY 89 <20 39 230 173 191 JUN 55 <10 25 518 173 390 JUL 32 <10 12 562 490 522 AUG 39 <10 24 662 562 581 SEP 44 <1 0 20 662 562 611 OCT 60 <10 30 734 494 "639 NOV 39 14 26 706 184, 583 DEC 66 18 47 677 346 503 Note: The residual chlorine limits in Permit CA0003751, Order 90-09, Is an instantaneous max of 200 ug/h, and includes a time-based limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.
- n/a value for low value in April for total residual chlorine & total chlorine use due to no system injections for one day.
Page1lof 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/h)
CHROMIUM COPPER NICKEL *ZINC Month lnfluent Effluent Influent Effluent lnfment Effluent lnfluent Effluent JAN ND(S) ND(S) ND(5) " ND(S) DNQ(S) DNQ(6) ND(S) ND(S)
FEB ND(5) ND(5) DNQ(6) DNQ(6) DNQ(6) DNQ(8) ND(S) DNQ(7)
MAR ND(5) ND(S) ND(S) ND(5) DNQ(6) DNQ(6) 24 DNQ(8)
APR ND(S) DNQ(6) ND(S) DNQ(7) DNQ(6) 10 13 DNQ(5)
MAY ND(S) ND(S) ND(5) DNQ(5) DNQ(7) DNQ(7) ND(S) ND(S)
JUN ND(S) ND(S) DNQ(6) ND(5) DNQ(7) DNQ(6) DNQ(5) ND(5)
JUL ND(S) ND(S) 'ND(5) .ND(5) DNQ(8) DNQ(8) ND(5) ND(S).
- AUG ND(S) ND(5) ND(5) ND(S) DNQ(8) DNQ(7) DNQ(7) ND(S)
SEP ND(S) ND(S) ND(S), ND(S), DNQ(6) DNQ(6) DNQ(6) ND(S)
- OCT ND(S) . ND(S) ND(5) ND(S) DNQ(9) DNQ(8) 21 DNQ(5)
NOV DNQ(5) ND(S) DNQ(8) DNQ(7) DNQ(7) DNQ(9) DNQ(7) ND(S)
SDEC DNQ(7). DNQ(7) DNQ(7) DNQ(6) DNQ(7) DNQ(7) 14 DNQ(S)
I I 6-month median limit: 10 - 10 - 30 - 70 VARIOUS DISCHARGE ANNUAL ANALYSES 001 (ughi) 6-Mo. Med.
Effluent Parameter in fluent Effluent Limit Arsenic 1.38 1.40 30 Cadmium 0.036 0.031 10 Cyanide ND(3) ND(3) 30 Lead 0.039 DNQ(0.0l5) 10 Mercury DNQ(0.00032) DNQ(0.00027) 0.2 Silver ND(0.004) ND(0.004) 2.9 Titanium ND(50.0) ND(S0.0) none
- Phenolic Compounds ND(3.031) ND(3.031) 150 (ann-chlorinated)
- Phenolic Compounds ND(0.567) ND(0.567) 10 (chlorinated)
- PCB's ND(0.0658) ND(0.0658) none
- Results for analysis of 9 target compounds. The sum of the 9 detection limits is 8.42.
SResults for analysis of 6 target compounds. The sum of the 6 detection limits is 2.02.
- Detection limits shown are the sum of individual detection limits for 7 target compounds.
DISCHARGE 001 AMMONIA (as N) (ug/I)
Month Influent Effluent JAN ND(50) DNQ(78)
FEB MAR APR DNQ(67) ND(S0)
MAY JUN JUL AUG 160 300 SEP OCT 86 DNQ(62)
NOV DEC 6-month median limit: 3,060 Page2of 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)
Discharge: 001 002 003 004 001P.
,Month lIntluent Effluent JAN 7.9 8.0 8.0 7.9 8.0 7.9 FEB 8.0 8.0 8.0 7.9 7.9 7.9 MAR 7.8 7.8 7.9 7.8 7.9 7.6 APR 7.7 7.8 7.8 7.7 7.7 7.6 MAY 8.0 8.0 8.0 8.0 8.0 7.7 JUN 7.9 7.9 7.9 7.9 7.9 7.7 JUL 7.9 7.9 7.9 ' 7.9 7.9 7.7 AUG 7.8 7.8 7.8 7.9 7.9 7.6 SEP 7.8 7.9 7.9 7.8 7.9 7.6
- OCT 7.8 7.9 8.0 8.0 .8.0 7.7 NOV 8.2 8.1 8.0 7.8 7.9 7.7 DEC 7.9 8.0 8.0 7.9 8.0 7.8 DISCHARGE 001F SUSPENDED GREASE & OI'L (mg/I) SOLIDS (mg/I)
Month high ave high ave JAN ND(1.4) ND(1.4) ND(2) ND(2)
FEB ND(I.4) ND(1.4) 7 7 MAR ND(1.4) ND(1.4) DNQ(2) DNQ(2)
APR ND(I.4) ND(1.4) DNQ(4) DNQ(4)
MAY ND(I.4) ND(1.4) ND(2) ND(2)
JUN ND(I.4) ND(I.4) DNQ(2) DNQ(2)
JUL ND(I.4) ND(I.4) ND(2) ND(2)
AUG ND(I.4) ND(I.4) DNQ(3) DNQ(3)
SEP ND(I.4) ND(I.4) ND(2) ND(2)
OCT ND(I.4) ND(lI4) DNQ(2) DNQ(2)
NOV ND(1.4) ND(1.4) DNQ(2) DNQ(2)
DEC ND(I.4) ND(1.4) DNQr2) DNO(21 limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
DISCHARGE O01N (Monthly Summary of Weekly Data)
SUSPENDED SETTLEABLE SOLIDS (mg/I) SOLIDS (millI)
GREASE & OIL (mg/I)
Month high low avg high low ave high low ave JAN <5.0 DNQ(1.4) <5.0 20 ND(3) 9 ND(0.1) ND(0.1) ND(0.1)
FEB 5.7 ND(1.4) *<5.0 75 9 27 ND(0.1) ND(0.1) ND(0.1)
MAR <5.0 N D(1.4) <5.0 26 5 12 ND(0.1) ND(0.1) ND(0.1)
APR DNQ(3.2) ND(1.4) DNQ(I.6) 95 10 34 ND(0.1) ND(0.I) ND(0.1)
MAY <5.0 ND(!l.4) <5.0 18 12 15 ND(0.1) ND(0.1) ND(0.1)
JUN DNQ(2.7) ND(I.4) DNQ(1.4) 14 4 8 ND(0.1) ND(0.1) ND(0.1)
JUL <5.0 ND(1.4) <5.0 12 ND(3) 7 ND(0.1) ND(0.i) ND(0.1)
AUG DNQ(I.4) ND(I.4) DNQ(l.4) 19 9 14 ND(0.1) ND(0.l) ND(0.I)
SEP 7.0 DNQ(1.6) <5.0 24 11! 15 ND(0.I) ' ND(0.1) ND(0.1)
OCT DNQ(2.8) DNQ(I.4) DNQ(I.8) 25 9 14 ND(0.1) ND(0.1) ND(0.1)
NOV <5.0 ND(I.4) <5.0 10 7 9 ND(0.1) ND(0.1) ND(0.I)
DEC <5.0 DNO(I.5') <5.0 15 ND(31 7 ND(0.1l NDt0.1) ND(0.I1 limit: 20 - 15 - - 60 3.0 - 1.0 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
Page3of 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H COIL C01F Month An Cd Cr Cu An Cd Cr Cu An Cd Cr Cu An Cd Cr Cu JAN ND(S) ND(S) DNQ(6) 26 ND(S) ND(S) 18 29 ND(5) ND(S) ND(S) ND(S) ND(S) ND(5) 214 15 FEB MAR APR ND(S) ND(5) ND(S) II ND(S) ND(S) 34 88 ND(S) ND(S) ND(S) DNQ(5) ND(S) ND(S) ND(S) 20 MAY JUN JUL ND(S) ND(S) DNQ(5) 17 ND('S) ND(S) 25 49 ND(S) ND(S) ND(S) ND{S) ND(S) ND(S) ND(S) 16 AUG SEP OCT ND(S) ND(S) ND(5) 20 ND(S) ND(S) 17 30 ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) ND(S) 12 NOV DEC limit: none" Note: 001D, O01H and 0OIL analyses perform led on quarterly composites.
001F analyses performed quarterly on a cozup osite of weekly samples.
DISCHARGE 001D, H, L, F, METALS (avg. ug/I) 0011H O0L C01F 001D Month Hn Ni Pb Zn HA Ni Ph Zn HE Ni Pb Zn HE Ni Pb Zn JAN ND(0.050) DNQ(9) ND(S) 127 ND(0.050) 13" 13 23 ND(0,050) ND(S) ND(S) ND(S) ND(0.OS0) 88 DNQ(7) 17 FEB MAR APaR ND(0.060) ND(S) ND(S) 63 ND(0.060) 15 10 71 ND(O.060) DNQ(S) ND(S) ND(S) ND(0.060) 11 ND(S) 30 MAY JUN JUL ND(0.060) ND(S) ND(S) 86 ND(0.060) 21 DNQ(9) <to ND(0.060) ND(S) ND(S) ND(S) ND(0.060) 10 ND(S) '26 AUG SEP OCT ND(0.060) ND(S)' ND(S) 75 ND(0.C60) 14 <10 DNQ(8) ND(O.060) ND(S) ND(S) ND(S) ND(0.060) 10 ND(S) 23 NOv DEC limit: none Note: 001D, 00111 and COIL analyses performed on quarterly composites.
COIF analyses performed quarterly on a composite of weekly samples.
Page4of 6
2012 Annual Summary Report on Discharge Monitoring at. the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (rag/I)
Mouth 001D* 001G 001H 0011 001J 001K 001L 001M 001P 002 003 JAN <5 ND(2) DNQ(2) ND(2) 5 DNQ(2) 29 FEB <5 ND(2) ND(2) ND(2) <5 DNQ(4) 11 MAR <5 ND(2) ND(2) DNQ(2) 21' <5 DNQ(4)
APR <5 ND(2) ND(2) ND(2) ND(2) ND(2) 29 !1 34 MAY <5 ND(2) ND(2) ND(2) ND(2) <5 ND(2)
JUN <5 ND(2) ND(2) DNQ(3) ND(2) 14 DNQ(2) DNQ(2)
JUL <5 DNQ(2) ND(2) ND(2) DNQ(2) ND(2) ND(2) DNQ(4)
AUG <5 ND(2) ND(2) ND(2) DNQ(3) 11 DNQ(2) 7 SEP <5 ND(2) ND(2) ND(2) ND(2) DNQ(2) DNQ(4) DNQ(2) S OCT <5 ND(2) DNQ(2) ND(2) ND(2) ND(2) DNQ(2) <5 NOV <5 ND(2) ND(2) ND(2) DNQ(2) ND(2) 8 DEC <5 DNQ(2) ND(2) ND(2) ND(2)* DNQ(2) DNQ(2)
Limit: 30 30 30 30 30 30 30 30 30 30
- Discharges from O0ID arehbatched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K during 2012.
Blatik spots for other discharge points indicate that no discharge occurred during that particular month.
QUARTERLY GREASE & OIL Averages by Month (rag/I)
Month 001D* 001G 001H 0011 001J 001K O01L 001M DOIP 002 003 004 JAN <5.0 ND(1.4) ND(1.4) ND(I.4) ND(1.4) ND(I.4) ND(1.4) ND(I.4)
FEB DNQ(3.9)
MAR ND(I.4)
APR <5.0 ND(I.4) ND(1.4) ND(I.4) ND(I.4) ND(I.4) ND(I.4) ND(1.4) ND(I.4) ND(I.4)
.MAY DNQ(2.1)
JUN DNQ(2.7)
JUL <5.0 ND(I.4) ND(I.4) ND(I.4) ND(1.4) ND(I.4) ND(I.4) ND(I.4) ND(I.4)
AUG ND(I.4) ND(I.4)
SEP <.5.0 ND(I.4) ND(I.4)
OCT <5.0 ND(I.4) NSD(l.4) ND(1.4) ND(I.4) ND(I.4) ND(I.4) ND(1.4) ND(I.4)
NOV <5.0 ND(I.4)
DEC <5.0 Limit: 15 15 15 15 15 15 15 15 15 15 15 15
- Discharges from O01D are batched. Monthly averages are flow weighted.
Note: No discharges occurred from 0011 and 001K durinsg 2012.
Page 5 of 6
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tUa and tue)
ACUTE *CHRONIC Test 6.Month Test Month Result Median Result JAN FEB 0.00 0.00 1.00 MAR/
APR 0.00 0.00 1.00 MAY JUN JUL 0.00 0.00 1.00 AUG SEP OCT 0.00 0.00 1.00 NOV DEC
'6-month median limit: 0.26 5.1
- This parameter is monitored for the State Ocean Plan instead of the NPDES Permit. A value of 1.0 indicates no chronic toxicity.
DISCHARGE 001N ANNUAL ANALYSES Sludge Parameter Result Limit Percent Moisture 99% None Total Kieldahl Nitrogen 620 mg/I None Ammonia (N) 58 mag/I None Nitrate (N) 5.9 mg/I None Orthophosphate (as P) 97 mg/I None pH 7.1 None Oil and Grease 11 mg/I None Boron 1.i mg/I None Cadmium 9.0 ug/l 10 X STLC*
Copper 3500 ug/l 10 X STLC Chromium DNQ(37) ug/l 10 X STLC Lead 54 ug/h 10 X STLC Nickel 71 ug/l 10 X STLC Mercury 16 ug/l 10 X STLC Zinc 5000 ug/l 10 X STLC Volume 1.31 tons None Note: Annual samples were collected in October.
- STLC Soluble Threshold Limit Concentration Page 6 of 6
Annual Discharge Monitoring Report APPEN DIX 3 GRAPHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT TemperatreC'F)
- 90.0T 80.0 70.0-60.0-Ij 60.
£40I.0 30.0-20.0-
-i
--- e,-'-Aw
.-- *Low 10.0O 0.0JAN t FEB MAR I
APR MAY JUN I
JUL AUG SEP I OCT NOVI !
DEC 2012 DISCHARGE 001 EFFLUENT Temperatur (CF) 90.0 6O00 70.0 60.0 igoG.
£40.0 30.0 20.0 I~A~I 10.0 0.04 I I L ~J JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Page l of 15
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow (IUGD) 2SO jisco x *i"'
U U
54 0 I I I II JAN FEB MAR APR MAY JUN JUL AUG SEP OC~T NOV DEC 2012 DISCHARGE 001 EFFLUENT 25 m
10 F
--.4*-- t.t*
--- 4.---Avm*t 0 ~
JAN FEB MA APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Page2 ofIl$
f I I III I i i
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Tota Clo*n Residual, ugh 100 "
70 60
- 20-10 JAN I FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below the reporting liuit.
DISCHARGE 001 Total ChlorineUsed, pounds per day 800 - .- -- , i 700 -*-A 0.
400.
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note:"The zero value Iu April was due to uo chlorine system injections for one day.
Page 3 of'1.S
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Coppr(monm~aveag, u.4) i
--p- Permait~
Um t R.p.dkng Limi 12 -a *nkmn 10 4
2 L-0JAN 2012 Note: The analyt was not detected at or above the detection limit for values plotted at zero.
The 6-maoth median limit (the most conservotive Eimit) is plotted on this chart (this Is also the onalyticl reporting lirit).
The dail maximum Eimit for Copper is S0 ugIL DISCHARGE 001 Nickel (monthly average, ug/I) 35 30: --
.--O-.- ash~s punma ium 25
- nun 20 ------ AmdUcaI Rapou* UL 15 0 SI I I 1i I iIi 10 10 10 10 10 10 10 10 10 10 10 10 2012 Note:. The amalyte was,not detected at or above the detection Eimit for values plotted at zero.
The 6-moath median limit (the fmost conservative Eitm) is plotted en this chart.
The daily maximum lEmit for Nickel is 100 .glr.
Page4of I
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zic(monthy avrage, ug/i) 60 60 50 ---
-v mocxe Iml~ e*Unt 30 20 10 0
MAR APR DEC 2012 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001 Chromium (monthly average, ugh) 12 10 8
4 2
0 NOV DEC 2012 Note:" The amulyte was not detected at or above the detection Himnt for values plotted at zero.
The 6-month median Emit Is plotted on this chart. The daily maximunm Eiut for chromium is 40 ugiL The discharge permit limit aad the analytical reporting limit are the maine (10 ug/I).
Page S of 15 f
nl
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant pH 8.3---- m n I---M- 0o 6.2-- --
8.0 mt 7.19 Z. 7.9 7.7 7.6 -
7.5 7.4 7.3 JAN FEB MAR AP bR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Several data points on this hart overlap.
Discharge 001 Amnmonia (as N, ug/I) 38( l0 30C 26C10 -- =- 64hoE USEIS Lee 10 -. h- hJlue.t
--4--- Elluem IOO10 10 O0I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: The analyte was not detected at or above the detection tlmit for values plotted at zero.
lafiueat and Efflucut values overlap at three points on this plot.
Page 6 ofIlS
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE O01F Oa & Grease (Maxilmum, molt) 25.0 20.0 15.0 t)
E 10.0+
5.0 p p JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below tihe deteetllo, limit.
DISCHARGE 001F Suslptnd.4 Solids
- ,.,(Maximum, mgdl) dwl MW T
- :-- i i . - -....
1150.1.
ao0 -...-- *M,,hm* ~
U*.S 60 40-I
( - 3 3 C 20 j
- - - -v---U-- t p JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Maximum values are plotted.
Page 7 of l$
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 26 20 16 0-I i I T JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Daily maxaimau and monthly average values OVerlap at seven polats on tbhs plot.
DISCHARGE O01N Suspended Solids (mg/I) L.e-*w ipk 100 90 so 70 60 0 IIt I ' I ' 1I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note:. There Is.nUMalt for daily mialnunm values. The average values are below monthly average limit.
DISCHARGE OO1N S.tWeable Solids (mi/)
3.5 2.5 i-o-e--oyr~rM LuI E 1.5 0.6
-j JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note:. Values plotted at zero were below the detection Ihult.
High, average, mad low values overlap at twelve points on this plot.
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2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 D QuartdyMetuf (ugh) IuCadmftND luaronluml
- 20 10 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note:. The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001D QuarterlyMetals (aig/I) 140 120 FL*I I.L*
100 uanc 60 20 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note:- The analyte was not detected at or above the detection limit for values plotted at zero.
Page 9 ofIl
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F 260*
200 U Chromium 160 ico-j 50 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte w-s not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001F Quarte/y Meal/s (ug/4) 60-IUNkI 40- r wcwi]
ULadI 30
,I ,I 20O 10 u
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 19 of 1S
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE O01H Quartrly8Mrals (ug/O 100 UatCnIwnlu 90
-,CopperM 80 70 60 30 20 10 0
FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The aulyte was not detected at or above the detection flmnt ror values plotted at zero.
DISCHARGE 001H Quarterl Metaa (ugW) 80 T 70 60- IuLeadl 80-10-0-
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
PagellIofl15
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE OO1L Qurn'teNetemla (ug7) 20 18 16 14 I*ChroIlun 12 8
4 2 II 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The analyte was met detected at or above the detection Hlmt for values plotted at zero.
DISCHARGE 001L QuarteryMetals (ugAI) 14 12 10+
8 omim]
6 ImlckelI iULeed 4
LZ~J 2
0 I IIII I I III JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 2012 Note: The amalyte was mot detected at or above the detection Iimlt for values plotted at zero.
Page 12 of/'15 I Il l I I ' I I I I(I II II I I I
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOUDS 35 -(Average, rag/I)
S20 I-.--ooto l 10 10 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note. Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOUIDS (Average, tog/)
35" 3ol =I.. . . = . . . . .
~20 IIot E 15.. -- m 10 5
0 A ____ __A1 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
MONTHLY TOTAL SUSPENDED SOLIDS (Average, mg/I) 40 25 301 - m-
~'20 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.
There is no limit for discharge 003. Therefore, the April 003 value of 34 does not exceeda l ImIti Page 13 of15 i* I
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (Averae, mg/I 16 12 mut012 1
~I
- m(Averageagmg/In
- ~
16 4
2 0a ...... I .... .......
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below the detection limit. Ls hvle r lte ttevle QUARTERLY OIL & GREASE (Average, mag/I) 16
_- U U- -- U -- -- U- = -- U _-
14 P 12 IIo 10 "'" l 4
2 0 I 1 I IIII I I I1 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2012 Note: Values plotted at zero were below the detection limit.
Page Iiofl35
- II I , I il l I ,, I I I e
2012 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY (6-Month Median) 6.00-5.00-2 4.00 Chronfc Bioassay Results
-S-mo. Medlui Acute Limit
-a- Chronic Limit
- 3.00
-*-Acute Bioassay Result.
Acute 6-month Median
'1.00-0.00 I JAN FEB I
MAR C
APR 0
MAY I
JUN JUL C
AUG I
SEP OCT 0
NOV 0
DEC 2012 Page iS ofl$S I
Annual Discharge Monitoring Report APPENDIX 4
SUMMARY
OF RWVMP MONITORING FOR 2012 RWUP 1st Survey 2nd Survey 3rd Survey 4th Survey Study Station,/ Completion Completion Completion oplto SdySurv.-y. Statlonsl Stationsl Statlonsl Stationsl per Year Dates Date. Dates Dates Horizontal Band Transects 1414x Feb 17 Jun 07 Aug 31 Dec 24 Vertical Band Transects 5/14x Feb 07 Jun 07 Aug 02 Dec 12 Benthic Statloons 81!4x Mar 09 Jun 28 , ep11 Dec 11 Fish Observation Transects 12/4x Apr24 Jul 13 Oct 09 Janl17, 2013 Bull Kelp Census *11lx n/a n/a n/a Oct 17 STemperature Monitoring 241/* Jan-Mar Apr-Jun Jul-Sep ,,Oct-Dec
- Diablo Cove census.
- -*Temperature measured throughout the year at 20 minute intervals (14 intertidal and 10 subtidal stations).
.A