DCL-2015-505, Submission of 2014 Annual Report on Discharge Self-Monitoring

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Submission of 2014 Annual Report on Discharge Self-Monitoring
ML15091A405
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 02/26/2015
From: Cortese K
Pacific Gas & Electric Co
To:
Office of Nuclear Reactor Regulation, State of CA, Regional Water Quality Control Bd
References
CA0003751, DCL-2015-505
Download: ML15091A405 (40)
v • d • e


Text

Electric Company KPacific Gas and Diablo Canyon Power Plant P.0. Box 56 Avila Beach, CA 93424 PG&E Letter DCL-2015-505 Electronic Submission CIWQS Web Application February 26, 2015 California Regional Water Quality Control Board 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 2014 Annual Report on Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP) is provided. This letter, and accompanying annual data summary tables and data plots, are attached to the CIWQS application submittal (eSMR). Annual State DMR Forms are additionally incorporated in the CIWQS electronic data submittal (eDMR).

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 El rX]

ISt Quarter: (check one): 3 rd 4 th 11 0 El Year: 2014 (Annual Reports for DCPP are Jan-Dec)

Violation(s) (Place an X by the appropriate choice): [E No (there are no violations to report) 0l Yes Note: Reference "Review of Compliance Record and Corrective Actions" Section

PG&E Letter DCL-2015-505 CRWQCB Central Coast Region February 26, 2015 Page 2 If Yes is marked (complete a-g):

a) Parameter(s) in Violation:

b) Section(s) of WDR/NPDES Violated:

c) Reported Value(s) d) WDR/NPDES Limit/Condition:

e) Dates of Violation(s) (If "YES", see overview section of attached report)

(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-2015-505 CRWQCB Central Coast Region February 26, 2015 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, Name: Kenneth W. Cortese

Title:

Manager, Chemistry and Environmental Operations- Diablo Canyon Power Plant 2015505/jlk/bkc

PG&E Letter DCL-2015-505 CRWQCB Central Coast Region February 26, 2015 Page 4 cc: Hardcopy Print-Out of CIWQS Application Submittal:

Thomas Hipschman Senior Resident Inspector U.S. Nuclear Regulatory Commission Diablo Canyon Power Plant 104/5 Regional Administrator U.S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-000

CIWQS Web Application Submittal Print Out and Attached Supporting Documents eSMR PDF Report Summary: Annual SMR ( MONNPDES ) report for 2014 Summary: Annual SMR ( MONNPDES ) report for 2014 submitted by Kenneth Cortese (No Title) on 02/26/2015.

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: 01/01/2014 - 12/31/2014 No Discharge Periods

  • :{?Nam e " ,*:::: .: ,.* ,_: i: * *- ,,***;: '* ;Descrip.tlon f .. ,* .. . :. " .,:.:* .. :,..,-:--* Da~tes ..** **-":'&c :-.." -":"..-,.-;> m e t *:: -: " ..

Diablo M-001 Diablo M-001D Diablo M-001F Diablo M-001G Diablo M-001H Diablo M-0011 01/01/2014 - 12/31/2014 Plant Seawater Evaporators no longer in

_ervice.

Diablo M-001J Diablo M-001K 01/01/2014 - 12/31/2014 Plant Condenser Tube Sheet Leak Detection Dumo Tank no lonaer in service.

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 5)iablo M-009 Diablo M-013 Diablo M-015 Diablo M-016 01/01/2014 - 12/31/2014 Bio Lab Seawater Supply Line Valve Box not drained during 2014. No effluent dlischarged.

Diablo M-017 1/01/2014 - 12/31/2014 Seawater RO System Blowdown Line not

______________ Irained during 2014. Discharoe rarely used.

ia blo M-INF Self-Determined Violations No Violations Entered Attachments Page 1 of 3

  • . .File .Name .. Fle Description... Date,Uploaded. FileSize, - 2014 DCPP Annual Report Overview Section.pdf 2014 Annual Summary Report on Discharge Monitoring at 02/26/2015 109604 bytes Diablo Canyon Power Plant - 2014 DCPP Annual Rpt Appendix-1 NPDES DCPP NPDES Permit Order 90-09 Discharge Points Table 02/26/2015 60764 bytes Discharces.pdf - 2014 DCPP Annual Rpt Appendix-2 Tabular Data. Tabular Summaries of Influent and Effluent Monitoring 02/26/2015 140549 bytes pdf - 2014 DCPP Annual Rpt Appendix-3 Graphical Graphical Summaries of Influent and Effluent Monitoring 02/26/2015 491739 bytes Data.pdf - 2014 DCPP Annual Rpt Appendix-4 RWMP Summary of Receiving Water Monitoring Program (RWMP) 02/26/2015 70242 bytes Summary.pdf Activities Cover Letter (Uploaded File)

STitle Date;Uploadedi T File-Size PGE DCL2015505 2014 NPDES Annual Discharge Monitoring Report.pdf 02/26/2015 746747 bytes Data Summary Analytical Results No Analytical Data Measurements Available / Reported Calculated Values No Calculated Data Measurements Available / Reported Certificate 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. I am aware that there are significant penalties for submitting false information, including the possibility of fine and 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 the following report(s):

- Annual SMR ( MONNPDES ) report for 2014 (due 02/28/2015)

I understand that data submitted in this report(s) can be used by authorized agencies for water quality management related analyses and enforcement actions, if required.

I am also aware that my user ID, password, and answer to a challenge question constitute my electronic signature and any information I Page 2 of 3

indicate I am electronically certifying contains my signature. I understand that my electronic signature is the legal equivalent of my handwritten signature. 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 true to the best of my knowledge.

Name: Kenneth Cortese

Title:

No Title Page 3 of 3

ANNUAL

SUMMARY

REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2014

PG&E Letter No. DCL-2015-505 2014 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 3
1. Ecological Studies at Diablo Canyon 3
2. In-Situ Bioassay 4 C. Sodium Bromide Treatment Program 4 D. Errata 4 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 2014

2014 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 CIWQS reports. Less-than results are typically reported to express an average of values that include non-detects and at least one result greater than the respective reporting limit (RL). These less-than results are plotted conservatively at the RL. During 2014, discharges occurred from all discharge paths except 0011, 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 Stormwater/Yard Drain Discharges 005, 008, 009, 013, and 015. Results are listdd below. No discharges that resulted in adequate sample quantities occurred from pathway 016, and no discharge occurred from pathway 017 during 2014.

005 DNQ(2.6) mg/I 008 non-detect - ND(1.4 mg/I) 009 DNQ(2.5) mg/I 013 non-detect - ND(1.4 mg/I) 015 non-detect - ND(1.4 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 ND(0.050 mg/I), 273 mg/I, and ND(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 Plant Management. The facility conducts biennial internal audits that review NPDES procedures contained in the plant manual, as

  • well as procedure implementation adherence by responsible workgroups. 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 2014 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 # CA01 036)
b. Aquatic Bioassay Consulting Laboratories, Ventura, California (EPA Lab # CA01907)
c. ALS Environmental (formerly Columbia Analytical Services), Kelso, Washington (EPA Lab # WA00035)
d. TestAmerica, Inc., Earth City, Missouri (EPA Lab # M000054)
e. Abalone Coast Analytical, San Luis Obispo, California (EPA Lab # CA02661)
f. E. S. Babcock &Sons, Inc., Environmental Laboratories, Riverside, California (EPA Lab # CA00102)
g. BSK Associates, Fresno, California (EPA Lab # CA00079)
4. Review of Compliance Record and Corrective Actions
a. Circulating Water Chlorination/Bromination Monitoring The 2014 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 were performed (as approved by the CCRWQCB January 13, 1994; PG&E Letter No. DCL-94-002).

Descriptions of these evaluations are included in the respective quarterly reports as applicable.

The evaluations concluded that discharge chlorine limits were not exceeded during these events.

TUnit and Number ofT Date Readings Affected Cause Corrective Action 03/11/14 to Unit 1 Faulted circuit board 03/19/14 13 Readings in discharge monitor.

04/07/14 04/08/14 to Unit 2 5 Reain 2 Low sample flow. Flow restored.

04/08/14 5 Readings 05/14/14 to Unit 2 Quality control check result> Monitor calibrated.

05/21/14 0 Readings upper acceptance limit.

07/21/14 to Unit 2 Monitor upper flow Flow block replaced and monitor 08/01/14 30 Readings block biofouling. recalibrated.

07/3014 to Unit 1 Monitor upper flow Flow block replaced and monitor 08/06/14 7 Readings block biofouling. recalibrated.

10/15/14 to Unit 1 Monitor sample valve Valve repositioned.

10/16/14 6 Readings inadvertently mispositioned 11/17/14 to Unit 2 Monitor sample flow isolated Temperature element mount 11/20/14 21 Readings during repair of temperature repair completed.

element mount in same pipe.

11/26/14 to Unit 2 Monitor over-responding. Monitor recalibrated.

12/03/14 0 Readings M 2

b. Closed Cooling Water Releases During 2014, 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.

The volumes of cooling water drained in 2014 from the component cooling water (CCW), service cooling water (SCW), and intake cooling water (ICW) 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. The dates/drain-events highlighted with an asterisk (*) were inadvertently omitted from the table provided in the 1st Quarter 2014 discharge self-monitoring report, and is listed in the Errata section of this report.

Volume Glut Iso Total Oil & Reason &

Date System (gallons) (mg/) (mg) Solids (mg/I) rease (mg/I) Comments 01/08/14 Unit 2 SCW 50 0.0 8.2 n/a n/a Routine Maintenance 01/21/14 (*) Unit 2 SCW 33,110 0.0 8.2 < 2.0 < 1.4 Routine Maintenance 02/08/14 Unit 1 ICW 1,150 0.0 2.8 < 2.0 < 1.4 Routine Maintenance 02/11/14 Unit 1 SCW 9,500 0.0 7.2 n/a n/a Routine Maintenance 02/14/14 Unit 1 CCW 831 174 0.0 n/a n/a Routine Maintenance 02/25/14 (*) Unit 1 CCW 25 n/a n/a 164 n/a Routine Maintenance 04/15/14 Unit 1 ICW 14 0.0 1.9 n/a n/a Routine Maintenance 04/15/14 Unit 2 ICW 14 0.0 1.8 n/a n/a Routine Maintenance 04/16/14 Unit 1 CCW 3,800 153 0.0 < 2.0 < 1.4 Routine Maintenance 05/14/14 Unit 1 SCW 550 0.0 8.6 n/a n/a Routine Maintenance 06/08/14 Unit 1 ICW 14 0.0 1.6 n/a n/a Routine Maintenance 06/24/14 Unit 1 SCW 33,100 0.0 8.3 < 2.0 Negative Routine Maintenance 10/08/14 Unit 2 SCW 5,100 0.0 7.9 6.5 < 1.4 Routine Maintenance 10/16/14 Unit 1 SCW 10 0.0 6.9 n/a n/a Routine Maintenance 11/09/14 Unit 2 ICW 3,321 0.0 6.5 n/a n/a Routine Maintenance

c. Sample Analysis Issues
1. One sample taken for the 2014 second quarter was mistakenly incorporated into the third quarter metals composite sample for Discharge 001 H. This unused sample aliquot from the Unit 1 Condensate Regeneration System obtained on 06/24/14 was inadvertently added to the discharge pathway composite being prepared for third quarter analysis. The presence of this sample aliquot in the 001 H composite is reflected on the CIWQS application submittal Attachment 1 Worksheet 1 for Unit 1 Location 001 H. It is unlikely the single inadvertently added aliquot significantly impacted the composite sample metals constituent analysis.

B. Monitoring of Receiving Water

1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2014 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 3

(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 2014. Results of 2013 RWMP data were submitted to the CCRWQCB on April 29, 2014. A table in Appendix 4 summarizes requirements and completed monitoring tasks for 2014.

2. In Situ Bioassay Results of the Mussel Watch Program are reported to the CCRWQCB directly by the California Department of Fish and Wildlife (CDF&W) in the agency's periodic report for this program.

C. Sodium Bromide Treatment Program DCPP continued an integrated sodium bromide and "foul release coating" strategy to control macrofouling in the Circulating Water System (CWS). Both circulating water conduits of each Unit can be chemically treated simultaneously. For the first half of 2014, the treatment program consisted of six 20-minute injections (at 4-hour intervals) of a blend of generic sodium bromide and sodium hypochlorite into the plant seawater intake conduits. In July 2014, DCPP returned to the use of a proprietary NALCO sodium bromide mix (Acti-Brom) to replace the generic sodium bromide to enhance marine biofouling control effectiveness. Each injection attempts to achieve a target concentration of 300 parts per billion (ppb) Total Residual Oxidant (TRO) at the inlet waterbox of the main steam condensers. Discharge TRO, measured at the plant outfall, remained below NPDES limitations. Typically, discharge TRO values during treatment 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 January with a brief interruption for maintenance activities. Unit 1 injections were secured in early February for the scheduled 1R1 8 unit refueling and maintenance outage. Simultaneous injections of sodium bromide and sodium hypochlorite were restarted in mid-March, and continued through June 2014 with brief interruptions in late March, and May for maintenance activities. Biofouling treatment continued with simultaneous injections of Acti-Brom and sodium hypochlorite from July through the remainder of 2014 with brief interruptions in August, and October for equipment maintenance activities. Injections were also secured in early December for several days for a Unit 1 tunnel cleaning.

Both conduits of Unit 2 were treated with simultaneous injections of sodium bromide and sodium hypochlorite six times a day through most of the first half of 2014. Injections were shut down for several days in January for a scheduled seawater conduit cleaning. Simultaneous injections of sodium bromide and sodium hypochlorite resumed after the cleaning and continued through June with brief interruptions in February, March, and May due to maintenance activities. Biofouling treatment continued with simultaneous injections of Acti-Brom and sodium hypochlorite from July through August with two brief interruptions in August for maintenance activities.

Acti-Brom injections were secured in mid-September in anticipation of the scheduled 2R1 8 unit refueling and maintenance outage. Sodium hypochlorite injections continued through the remainder of September for microfouling control in the Unit 2 main steam condenser. Unit 2 chemical injections were secured from early October to early November for the 2R1 8 refueling outage. Both conduits of Unit 2 were treated with simultaneous injections of Acti-Brom and sodium hypochlorite six times a day from early November throughout the remainder of 2014, with one brief interruption in early December for equipment maintenance activities.

D. Errata Three quarterly reporting errors have been identified while compiling and verifying data for this annual report.

In the 1 st quarter 2014 discharge self-monitoring report in the Overview section, item 3, a Unit 2 SCW closed cooling system drain/release on January 21, 2014 was inadvertently left out. The data is included in the summary table above. The amount of wastewater released was 33,110 gallons.

4

In the 1st quarter 2014 discharge self-monitoring report in the Overview section, item 3, a Unit 1 CCW closed cooling system drain/release on February 25, 2014 was inadvertently left out. The data is included in the summary table above. The amount of wastewater released was 25 gallons.

In the 4th quarter 2014 discharge self-monitoring report (eSMR) that was submitted via CIWQS, the annual result for 001 N chromium was inadvertently left out of the data tables. However, the data was incorporated in of the same report. The value was 6.2 mg/kg.

5

Annual Discharge Monitoring Report APPENDIX 1 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

2014 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 high low avg high avg high low av!

JAN 57.7 54.6 56.1 76.1 72.9 74.8 19.5 18.7 2486 1862 2398 FEB 55.6 52.2 54.0 73.2 63.1 70.5 18.4 16.5 2486 1279 1571 MAR 56.7 52.3 54.6 75.4 63.5 69.9 19.1 15.3 2486 1279 1929 APR 53.6 50.0 51.5 71.8 68.3 69.8 18.4 18.3 2486 2486 2486 MAY 53.9 49.2 51.5 72.1 65.7 69.6 18.4 18.2 2486 2486 2486 JUN 54.9 51.5 53.1 73.4 66.8 71.4 18.6 18.3 2486 2486 2486 JUL 59.8 53.6 56.8 79.0 72.4 75.5 19.4 18.7 2486 2486 2486 AUG 59.9 54.7 57.2 79.0 66.0 74.8 19.4 17.6 2486 1937 2449 SEP 59.4 55.2 57.5 78.3 70.7 76.3 19.7 18.7 2486 2486 2486 OCT 66.4 56.5 61.0 84.8 74.5 79.5 19.2 18.5 2486 1239 1417 NOV 61.8 59.1 59.9 79.7 73.4 77.4 19.0 17.5 2486 1471 2313 DEC 63.8 57.0 61.4 82.8 67.3 79.3 19.0 17.8 2486 1862 2392 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 average for the entire month. The Monthly Delta T "high" is the highest Delta T for a day of the month based 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/I) USED (lbs/day)

Month high low avg high low avg JAN 39 0 24 576 0 504 FEB 68 <20 37 576 240 301 MAR 60 <20 35 533 228 403 APR 41 18 30 576 504 546 MAY 42 <10 22 634 262 562 JUN 35 15 22 677 590 638 JUL 35 <10 7 763 619 716 AUG 35 <10 21 864 598 776 SEP 51 15 25 850 691 773 OCT 48 <10 24 691 312 394 NOV 64 <10 38 720 374 627 DEC 55 16 27 749 180 652 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 1 of 6

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/I)

CHROMIUM COPPER NICKEL *ZIN4C Month Influent Effluent Influent Effluent Influent Effluent Influent Effluent JAN ND(5) ND(5) DNQ(6) DNQ(6) ND(5) ND(5) ND(5) ND(5)

FEB ND(5) ND(5) DNQ(8) DNQ(6) ND(5) ND(5) ND(5) ND(5)

MAR ND(5) ND(5) DNQ(7) DNQ(7) ND(5) ND(5) ND(5) ND(5)

APR ND(5) ND(5) DNQ(9) DNQ(9) ND(5) ND(5) ND(5) DNQ(7)

MAY ND(5) ND(5) DNQ(7) DNQ(6) ND(5) ND(5) ND(5) ND(5)

JUN ND(5) ND(5) DNQ(5) DNQ(5) ND(5) ND(5) ND(5) ND(5)

JUL ND(5) ND(5) DNQ(8) DNQ(7) ND(5) ND(5) ND(5) ND(5)

AUG ND(5) ND(5) DNQ(6) DNQ(6) ND(5) ND(5) ND(5) ND(5)

SEP ND(5) ND(5) DNQ(6) ND(5) ND(5) ND(5) DNQ(7) ND(5)

OCT ND(5) ND(5) DNQ(5) ND(5) ND(5) ND(5) 10 ND(5)

NOV ND(5) ND(5) DNQ(6) DNQ(5) ND(5) ND(5) ND(5) ND(5)

DEC ND(5) ND(5) DNQ(7) DNQ(7) ND(5) ND(5) ND(5) ND(5) 6-month median limit: 10 - 10 30 70 Note: Influent results presented only for comparison to effluent. Influent Cr, Cu, Ni, are analyzed monthly, but are only required to be reported quarterly by permit. Influent zinc is analyzed monthly and reported quarterly, but only required annually by permit.

DISCHARGE 001 VARIOUS ANNUAL ANALYSES (ng/I) 6-Mo. Med.

Effluent Parameter Influent Effluent Limit Arsenic 1.40 1.40 30 Cadmium 0.032 0.036 10 Cyanide ND(0.9) ND(0.9) 30 Lead 0.097 0.098 10 Mercury 0.00072 0.00074 0.2 Silver DNQ(0.006) DNQ(0.007) 2.9 Titanium 5.1 3.6 none

  • Phenolic Compounds ND(3.031) ND(3.031) 150 (non-chlorinated)
    • Phenolic Compounds ND(0.567) ND(0.567) 10 (chlorinated)
      • PCB's ND(0.0679) ND(0.391) none
  • Results for analysis of 8 target compounds. The sum of the 8 detection limits is 3.031.
    • Results for analysis of 6 target compounds. The sum of the 6 detection limits is 0.567.
      • Detection limits shown are the sum of individual detection limits for 7 target compounds.

DISCHARGE 001 AMMONIA (as N) (ug/1)

Month Influent Effluent JAN 120 130 FEB MAR APR 240 210 MAY JUN JUL DNQ(61) DNQ(63)

AUG SEP OCT 250 260 NOV DEC 6-month median limit: 3,060 Page 2 of 6

2014 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 8.0 8.0 8.0 8.0 8.1 7.8 FEB 8.0 8.0 7.8 8.0 7.9 7.8 MAR 7.9 8.0 7.8 8.0 7.9 7.9 APR 8.0 8.0 7.9 8.0 8.0 7.7 MAY 7.9 7.9 7.8 7.7 7.8 7.8 JUN 8.1 8.1 8.0 7.9 7.9 7.7 JUL 7.9 7.8 8.2 8.2 8.1 7.8 AUG 8.0 8.0 7.9 7.9 8.0 7.7 SEP 8.0 8.0 7.9 7.9 7.9 7.7 OCT 8.0 8.1 8.0 8.0 7.9 7.7 NOV 8.0 8.0 8.0 8.0 8.0 7.8 DEC 8.0 8.0 8.1 8.0 8.1 7.7 DISCHARGE 001F SUSPENDED OIL & GREASE (mg/I) SOLIDS (mg/I)

Month high ave hieh av2 JAN ND(1.4) ND(I.4) ND(2) ND(2)

FEB DNQ(3.3) DNQ(3.3) DNQ(4) DNQ(4)

MAR ND(I.4) ND(I.4) DNQ(3) DNQ(3)

APR ND(I.4) ND(I.4) DNQ(3) DNQ(3)

MAY ND(I.4) ND(I.4) ND(2) ND(2)

JUN ND(I.4) ND(1.4) DNQ(2) DNQ(2)

JUL DNQ(l.4) DNQ(1.4) 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(21 OCT ND(I.4) ND(I.4) DNQ(2) DNQ(2)

NOV DNQ(2.4) DNQ(2.4) DNQ(4) DNQ(4)

DEC 0.) ND1I.45 DNOQ2 DNO(2) limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.

DISCHARGE OOIN (Monthly Summary of Weekly Data)

SUSPENDED SETTLEABLE GREASE & OIL (mg/I) SOLIDS (mg/I) SOLIDS (mnl/)

Month high low av2 high low av2 high low av2 JAN DNQ(0.72) ND(0.72) DNQ(0.72) 12 DNQ(3) 6 DNQ(0.1) DNQ(0.1) DNQ(0.1)

FEB DNQ(0.72) ND(0.72) DNQ(0.72) 33 ND(2.57) 13 DNQ(0.1) DNQ(0.1) DNQ(0.1)

MAR DNQ(0.72) ND(0.72) DNQ(0.72) 16 5 12 DNQ(0.1) DNQ(0.1) DNQ(0.1)

APR DNQ(I.29) DNQ(0.72) DNQ(0.92) 19 ND(2.57) 12 DNQ(0.1) DNQ(0.1) DNQ(0.1)

MAY DNQ(0.72) ND(0.72) DNQ(0.72) 8 4 6 DNQ(0.1) DNQ(0.1) DNQ(0.1)

JUN DNQ(0.72) ND(0.72) DNQ(0.72) 6 ND(2.57) 3 DNQ(0.1) DNQ(0.1) DNQ(0.1)

JUL DNQ(0.72) ND(0.72) DNQ(0.72) 14 5 7 DNQ(0.1) DNQ(0.1) DNQ(0.1)

AUG DNQ(0.72) ND(0.72) DNQ(0.72) 8 3 5 DNQ(0.1) DNQ(0.1) DNQ(0.1)

SEP DNQ(0.72) ND(0.72) DNQ(0.72) 13 4 8 DNQ(0.1) DNQ(0.1) DNQ(0.1)

OCT 10.7 DNQ(0.72) <5.0 46 5 24 0.1 DNQ(0.1) <0.1 NOV DNQ(2.4) ND(0.72) DNQ(0.72) 26 DNQ(2.6) 11 DNQ(0.1) DNQ(0.1) DNQ(0.1)

DEC ND(0.72) ND10.72) ND 0.72) 23 14 18 0.2 DNO(0.1) <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.

Page3 of 6

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/)

001D 001H 001L 00IF Month A2 Cd Cr Cu A2 Cd Cr Cu A2 Cd Cr Cu Ae Cd Cr Cu JAN ND(5) ND(5) ND(5) ND(S) ND(S) ND(5) 18 41 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 16 10 FEB MAR APR ND(5) ND(5) ND(5) 14 <10 <10 40 65 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 20 12 MAY JUN JUL ND(5) ND(5) 67 ND(5) ND(5) ND(5) 32 33 ND(5) ND(S) ND(5) ND(5) ND(5) ND(5) ND(5 11 AUG SEP OCT ND(0.05) ND(0.22) ND(5) DNQ(3.7) ND(S) ND(S) 58 51 ND(5) ND(5) ND(5) <10 ND(5) ND(5) ND(5) 16 NOV DEC 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/I) 001D 001H 001L 001F Month He Ni Pb Zn He Ni Pb Zn He Ni Pb Zn HI Ni Pb Zn JAN DNQ(0.093) ND(5) ND(5) 75 ND(0.050) 14 23 DNQ(8) ND(0.050) ND(5) ND(5) ND(5) ND(0.050) ND(5) 12 13 FEB MAR APR DNQ(0.053)DNQ(5) DNQ(5) 77 ND(0.050) 28 26 19 ND(0.050) ND(5) ND(5) 11 ND(0.050) 14 10 37 MAY JUN JUL ND(0.050) 46 ND(5) 69 ND(0.050) 17 15 12 ND(0.050) ND(5) ND(5) ND(5) ND(0.050) ND(5) DNQ(9) 25 AUG SEP OCT ND(0.091)DNQ(4.9) 2.2 DNQ(86) ND(0.050) 28 16 <10 ND(0.050) ND(5) ND(5) <10 ND(0.050) ND(5) 12 32 NOV DEC limit: none Note: 001D, 001H and 001L analyses performed on quarterly composites.

001F analyses performed quarterly on a composite of weekly samples.

Page 4 of 6

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (mg/I)

Month 001D* 001G 001H 001I 001iJ 001K 001L 001M 001P 002 003 JAN <5 ND(2) ND(2) ND(2) <5 ND(2) DNQ(3)

FEB <5 ND(2) ND(2) ND(2) ND(2) DNQ(3) DNQ(2) DNQ(2)

MAR <5 ND(2) DNQ(2) 5 ND(2) DNQ(3) DNQ(4) 10 APR <5 ND(2) ND(2) ND(2) DNQ(2) ND(2) DNQ(2)

MAY <5 ND(2) DNQ(2) ND(2) DNQ(3) <5 DNQ(2) ND(2)

JUN <5 ND(2) ND(2) ND(2) <5 <5 16 JUL <5 ND(2) DNQ(2) ND(2) 15 DNQ(2) 5 AUG <5 ND(2) DNQ(3) ND(2) DNQ(2) DNQ(4) DNQ(2)

SEP <5 ND(2) ND(2) ND(2) DNQ(3) ND(2) 8 OCT <5 ND(2) ND(2) ND(2) ND(2) <5 DNQ(2) DNQ(3)

NOV <5 ND(2) ND(2) ND(2) ND(2) 12 DNQ(2) ND(2)

DEC <5 ND(2) DNQ(2) ND(2) 8 5 10 Limit: 30 30 30 30 30 30 30 30 30 30 -

  • Discharges from 001D are hatched. Monthly averages are flow weighted.

Note: No discharges occurred from 0011 and 001K during 2014.

Blank spots for other discharge points indicate that no discharge occurred during that particular month.

GREASE & OIL Averages by Month (mg/I)

Month 001D* 001G 001H 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) ND(1.4) ND(1.4)

FEB <5.0 ND(1.4)

MAl <5.0 APR DNQ(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)

MAY DNQ(1.4) ND(1.4) ND(1.4)

JUN <5.0 ND(1.4)

JUL DNQ(1.4) ND(l.4) ND(1.4) ND(l.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)

AUG ND(1.4)

SEP <5.0 OCT DNQ(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4) ND(1.4)

NOV 5.2 DEC <5.0 ND(1.4) ND(1.4)

Limit: 15 15 15 15 15 15 15 15 15 15 15 15

  • Discharges from 001D are batched. Averages are How weighted and calculated and reported monthly, though only required quarterly.

Note: No discharges occurred from 0011 and 001 K during 2014.

Page5 of 6

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tua and tuj)

ACUTE *CHRONIC Test 6-Month Test Month Result Median Result JAN 0.00 0.00 1.00 FEB 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 Kjeldahl Nitrogen 89000 mg/kg None Ammonia (N) 2500 mg/kg None Nitrate (N) ND(120) None Total Phosphorous 15000 mg/kg None pH 7.2 None Oil and Grease ND(110000) None Boron DNQ(160) None Cadmium ND(I.8) 10 X STLC*

Copper 420 mg/kg 10 X STLC Chromium 6.2 mg/kg 10 X STLC Lead DNQ(7.3) 10 X STLC Nickel 8.1 mg/kg 10 X STLC Mercury ND(0.30) 10 X STLC Zinc 650 mg/kg 10 X STLC Volume 2.3 tons None 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

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT Temperature(OF) 90.0 80.0 70.0 60.0 U.

50.0 CM C

0 40.0 30.0 High 20.0 Average 10.0 Low 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 DISCHARGE 001 EFFLUENT 0

Temperature ( pq 90.0 80.0 70.0 60.0 U-50.0 a

40.0 30.0 -k-High 20.0 0-4. AverageI 10.0 Low I

0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Page I of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow (MGD) 3000 In 2500 q a

.2oo 0

1500 -

0 o 1000 -- I--Limit NE -- High 500 + Average Low 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 DISCHARGE 001 EFFLUENT Monthly Delta T (°F) 25 20

u. 15 10 frHigh~

5-0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Page2of15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 High Total ChlorineResidual, ug/I

-- -Average 80 0 Low I

70 60 50

-J

" 40 30 20 10 0? 0 W W JAN FEB MAR APR MAY JUN 2014 Note: Values plotted at zero were below the reporting limit.

DISCHARGE 001 Total Chlorine Used, pounds per day 900 1000, -- *- Average

-"*-4-High 800 0 Low

, 700 0

IL 600 200 100 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Page3 of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Copper(monthly average, ug/1) permit Limit and Reporting Umit Influent 12

- Effluent 10

-J 4

2 0 i i i i I i I JAN FEB MAR APR MAY JUN JUL AUG 2014 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 ug/I.

DISCHARGE 001 Nickel (monthly average, ug/l) 35 T 30 U- Discharge Permit Limit 25 + - - Influent

  • -Effluent 20 + --
  • Analytical Reporting Limit

.J

= 15 10 5

0 Jan Feb Mar Apr May Jun 2014 Jul Aug ii Sep Oct Nov Dec 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.

Page4of.15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zinc (monthly average, ug/I) 80 70 60 -- DIscharge Permit Limit Influent 50 + -- Effluent 4J Analytical Reporting Limit S40 30 +

20 10 ,qp 0 A

- *9 - At 0 # A JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

DISCHARGE 001 Chromium (monthly average,ug/I) 12 10 6-Month Median and Analytical Reporting Limit 8

- Influent 6 - Effluent 4

2 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

The 6-month median limit and the analytical reporting limit are the same (10 ug/I) and are plotted on this chart.

The daily maximum limit for chromium is 40 ug/Il.

Page5of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant 001 Influent pH -- -- 001 Effluent

- 0 002 8.3

-o- 003

- 004 8.2 001 P 8.1 8.0 7.9 CL 7.8 7.7 7.6 7.5 7.4 4-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Several data points on this chart overlap.

Discharge 001 Ammonia (as N, ugll) 3500 3000 2500 ----- 8-Month Median Umit Influent

= 2000 Effluent

1500 1000 +

500 4k A

-P I i 11 i i I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

Influent and Effluent values overlap at four points on this plot.

Page6of15

2014 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 E

10.0 5.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Values plotted at zero were below the detection limit.

DISCHARGE 001 F Suspended Solids (Maximum, mg/I) 120 100 in I-Daily Maximum Limit I 80 Monthly Average Limit

-- Sample Result (Maximum) o60 a Analytical Reporting UrnL E

40 20 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Maximum values are plotted.

Page 7 of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant Daily Maximum Limit DISCHARGE 001N Monthly Average Umit Oil & Grease (mg/I) Daily Maximum

- - Average 25 Analytical Reporting Limit 20 15 E 10 5

0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Daily maximum and monthly average values overlap at ten points on this plot.

--- Monthly Average Limit DISCHARGE 001N Suspended Solids (mg/I) --- Daily Maximum 70 -- Average 60 50-

-40 E 30 20 101 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: There is no limit for daily maximum values. The average values are below the monthly average limit.

DISCHARGE 001 N Setffleable Solids (ml/I) 3.5 3.

2.5 Daily Maximum Limit 2 -O- Monthly Average Limit Daily Maximum E 1.5

- Average 1' 0 0.5 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Values plotted at zero were below the detection limit.

High, average, and low values overlap at twelve points on this plot.

Page8ofl5

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D a7iver~

QuarterlyMetals (ug/) IuCadmiumI 90 IUChromiumI 80 70 60-

'a 40-30 20 10 0

JAN FEB MAR APR I MAY JUN I

JUL AUG SEP OCT I

NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

DISCHARGE 0010 QuarterlyMetals (ugI) 90 80-IULeadI 70 uZincI 60 co 50 40 30 20 10 0

rL JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

I----------------.---~II 4---------4---------

Page 9 of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F 90 QuarterlyMetals (ug/I) 80 73~ler 70 ECadmiumi 60 IUChrmmium s~per I 50

" 40 30 20 10 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

DISCHARGE 001 F QuarterlyMetals (ug/I) 13Mercury 90 0 Nickel 80 ELead 70 E=Zinc 60 50

" 40 30 20 10 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

Page 10 of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 H QuarterlyMetals (ug/I) nSilver 90

= 40 30 20 10 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

DISCHARGE 001H QuarterlyMetals (ugI) 90 nffercury 80 E Nickel 70 lELead 60 mZinc I

50

" 40 30 20 10 0

JAN FEB MAR APR MAY I

JUN I~I 2014 JUL AUG I

SEP I L OCT NOV DEC Note: The analyte was not detected at or above the detection limit for values plotted at zero.

Page I Iof 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001L QuarterlyMetals (ugI) 90 80 a7iver~

70

  • Cadmium 60 IChromiumI 50 M~per I

= 40 30 +

20 +

10 0

l, JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

DISCHARGE 001L QuarterlyMetals (ug/I) 90 80 70 60

_ 50 DMercury S40 NNickel 30 I*Lead EZinc 20 10 0 I I I I I I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: The analyte was not detected at or above the detection limit for values plotted at zero.

Page 12 of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS (Average, mg/I) 35 30 m m m 25 M---ontlyAvrgeUr

- 20 00~1 D

66 E 15 10 6

U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DE(C 2014 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.

MONTHLY TOTAL SUSPENDED SOLIDS (Average, mgA) 35 30 i 25 4 -W-- Monthly Average Umit

--- A- 0011 20

001 L E Is -- 4.-001 M 10 +

5+

0 * # p* -p JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 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 ---- Monthly Average Ulmk (001P & 002) 003 E 15 --a 10 5

0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Points on chart may overlap. Values plotted at zero were below the detection limit.

Page13 of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (Average, mg/I) 16 14 m OOIo 12

/0011G 10 0.01H I* Monthly Average Limit E

6 4

2 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 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 12 m 001*

10 m o 01M 7a) 8 Monthly Average Limit E

6 4

2 0 I I - I I I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Values plotted at zero were below the detection limit.

QUARTERLY OIL & GREASE (Average, mg/i) 16 14 m oolP 12 002 10 m 003

-8 004 E -- E- Monthly Average UimR 6

4 2

0i I II I i JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2014 Note: Values plotted at zero were below the detection limit.

Page 14 of 15

2014 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY (6-Month Median) 6.00

.. . .. m m m m m .. U , --

5.00 m Chronic Bioassay Results "4.00

-- O- 6-mo. Median Acute Limit

'3.000 Acute Bioassay Results

- Chronic Limit x 2.00

  • Acute 6-month Median 0

l-1.00 0.00 I JAN FEB MAR I

APR MAY JUN H

JUL AUG I

SEP OCT NOV DEC 2014 Page 15 of 15

Annual Discharge Monitoring Report APPENDIX 4

SUMMARY

OF RWMP MONITORING FOR 2014 RVWMP 1st Survey 2nd Survey 3rd Survey 4th Survey Study Stations/ Completion Completion Completion Completion Surveys Stations/ Stations/ Stations/ Stations/

per Year Dates Dates Dates Dates Horizontal Band Transects 14 / 4x Feb 26 June 13 Aug 12 Dec 23 Vertical Band Transects 5 / 4x Jan 30 May 29 Aug 11 Dec 22 Benthic Stations 8 / 4x Mar 25 June 18 Aug 12 Jan 02, 2015 Fish Observation Transects 12 /4x Apr 14 Aug 21 Sep 10 Jan 02, 2015 Bull Kelp Census * / lx n/a n/a n/a Oct 01 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).
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