DCL-2020-509, 2019 Annual Report on Discharge Self-Monitoring
| ML20122A151 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 02/27/2020 |
| From: | Cortina D Pacific Gas & Electric Co |
| To: | Office of Nuclear Reactor Regulation, State of CA, Regional Water Quality Control Bd |
| References | |
| DCL-2020-509 | |
| Download: ML20122A151 (39) | |
Text
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P. 0. Box 56 Avila Beach, CA 93424 PG&E Letter DCL-2020-509 Electronic Submission CIWQS Web Application February 27, 2020 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 2019 Annual Report on Discharge Self-Monitoring at Diablo Ci;:inyon Power Plant (DCPP) is provided. This letter, accompanying overview, and a~nual data summary tables and plots, have been attached to the California Integrated Water Quality System (CIWQS) web application data submittal for the period.
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. GA0003751 Type of Report: (check one) QUARTERLY ANNUAL D ~
Quarter: (check one): 1st 4th D D Year: 2019 (Annual Reports for DCPP are Jan-Dec)
Violation(s) (Place an X by the appropriate choice): IBl No (there are no violations to report) D Yes
PG&E Letter DCL-2020-509 CRWQCB Central Coast Region February 27, 2020 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-2020-509 CRWQCB Central Coast Region February 27, 2020 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 influen( 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 s*ubmitting 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: David Cortina
Title:
Manager, Chemistry and Environmental Operations - Diab/a Canyon Power Plant 2020509/bkc/nrh
PG&E Letter DCL-2020-509 CRWQCB Central Coast Region February 27, 2020
- Page 4 cc: Hardcopy Print-:Out of CIWQS Application Submittal:
Lindsay Merker Acting NRC Senior Resident Inspector U.S. Nuclear Regulatory Commission Diablo Canyon Power Plant 104/5 Regional Administrator Licensing Assistant, Operations Branch U.S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 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 2019 Summary: Annual SMR ( MONNPDES ) report for 2019 submitted by david cortina (Chemistry and Environmental Services Manager) on 02/28/2020.
Facility Name: PG&E Diablo Canyon Power Plant Order Number: R3-1990-0009 Waterboard Office: Region 3 - Central Coast Case Worker:
Report Effective Dates: 01/01/2019 - 12/31/2019 No Discharge Periods
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Diablo M-001 Diablo M-0010 Diablo M-OOlF Diablo M-OOlG Diablo M-OOlH Diablo M-0011 01/01/2019 - 12/31/2019 Plant Seawater Evaporators no longer in service.
Diablo M-OOlJ Diablo M-OOlK 01/01/2019 - 12/31/2019 Plant Condenser Tube Sheet Leak Detection Dump Tank no longer in service.
Diablo M-OOlL Diablo M-OOlM Diablo M-OOlN Diablo M-OOlP Diablo M-002 Diablo M-003 Diablo M-004 Diablo M-005 Diablo M-008 Diablo M-009 Diablo M-013 Diablo M-015 Diablo M-016 01/01/2019 - 12/31/2019 Bio Lab Seawater Supply Line Valve Box not drained during 2019. No effluent discharaed.
Diablo M-017 01/01/2019 - 12/31/2019 Seawater RO System Slowdown Line not drained during 2019. Discharge rarelv used.
Diablo M-INF Self-Determined Violations No Violations Entered Attachments
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2019 Annual Summary Report on Discharge Monitoring at - 2019 DCPP Annual Report Overview Section.pdf 02/27/2020 91609 bytes Diablo Canvon Power Plant Page 1 of 3
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Attachment 2 - 2019 DCPP Annual Rpt Appendix-1 NPDES 82912 bytes DCPP NPDES Permit Order 90-09 Discharge Points Table. 02/27/2020 Dischar es. df Attachment 3 - 2019 DCPP Annual Rpt Appendix-2 Tabular&. Tabular and Graphical Summaries of Influent and Effluent 291172 bytes 02/27/2020 Gra hical Data. df Monitorin .
Attachment 4 - 2019 DCPP Annual Rpt Appendix-3 RWMP Summary of Receiving Water Monitoring Program (RWMP) 70400 bytes 02/27/2020 Summa . df Activities.
Cover Letter T<itle*
1* applirntion/pdf ..
Data Summary Analytical Results No Analytical Data Measurements Available/ Reported Calculated Values No Calculated Data Measurements Available / Reported Lab Batches No Lab Batch Data Available/ Reported Questionnaire No Questionnaire Available 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 david cortina 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 2019 (due 02/29/2020)
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 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 Page 2 of 3
environmental program and must be true to the best of my knowledge.
Name: david cortina
Title:
Chemistry and Environmental Services Manager Page 3 of 3
)
ANNUAL
SUMMARY
REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2019
PG&E Letter No. DCL-2020-509 2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS OVERVIEW
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 5 C. Sodium Bromide Treatment Program 5 APPENDICES Appendix 1 - NPDES Discharge Points Appendix 2- Tabular and Graphical Summaries of Influent and Effluent Monitoring Appendix 3- Summary of RWMP Monitoring for 2019
2019 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 2019, discharges occurred from all discharge paths except 0011, 001 K, 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. Report Appendix 2 contains monitoring data in tabular and graphical form.
- b. In September 2019, Discharge 001 D (Liquid Radioactive Waste Treatment System) annual grab samples for lithium, boron, and hydrazine were collected and analyzed. Results were ND (<0.05) mg/L lithium, 52.0 mg/L boron, and ND (<0.003) mg/L hydrazine.
- 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 arei conducted to assure that the manual remains valid, current, and complete for the facility.
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- 3. Laboratories Used to Monitor Compliance The following laboratories were used during 2019 for monitoring compliance. The laboratories are certified by the California Environmental Laboratory Accreditation Program (ELAP) for the analyses performed. To satisfy requirements of the ELAP biannual 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# CA00021)
- c. ALS Environmental, Kelso, Washington (EPA Lab # WA00035)
- e. Abalone Coast Analytical, San Luis Obispo, California (EPA Lab# CA01543)
- f. E. S. Babcock & Sons, Inc., Environmental Laboratories, Riverside; California (EPA Lab# CA00102)
- g. BSK Associates, Fresno, California (EPA Lab# CA00079)
- i. Weck Laboratories, Inc., Industry, California (EPA Lab# CA00211)
- 4. Review of Compliance Record and Corrective Actions
- a. Circulating Water Chlorinatiori/Bromination Monitoring The 2019 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.
Unit and Number of Date Cause Corrective Action Readings Replaced 01/01/19 to Unit-1 Monitor cleaned and Low monitor sample flow.
01/02/19 6 Readings returned to service 01/11/19 to Unit-2 Erratic monitoring peaks Monitor cleaned and 01/16/19 15 Readings due to monitor biofouling. returned to service.
01/18/19 to Unit-2 Monitor cleaned and Monitor biofouling.
01/19/19 7 Readings returned to service.
01/21/19 to Unit-2 Sample pump failure. Replaced sample pump.
01/22/19 4 Readings 01/27/19 to Unit-2 Monitor cleaned and Monitor biofouling.
02/01/19 15 Readings returned to service.
02/20/19 to Unit-2 Monitor cleaned and Monitor biofouling.
02/25/19 7 Reading returned to service.
02/26/19 to Unit-2 Monitor re-calibrated and Monitor Failed QC Check.
02/27/19 7 Readings returne~ to service.
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03/02/19 to Unit2 Monitor cleaned and Monitor biofouling.
03/03/19 6 Readings returned to service.
03/11/19 to Unit-2 Monitor cleaned and Monitor biofouling.
03/12/19 5 Readings returr\ed to service.
Unit-2 Monitor cleaned and 03/17/19 Monitor biofouling.
3 Readings returned to service.
03/22/19 to Unit-2 Monitor cleaned and Monitor biofouling.
03/23/19 6 Readings returned to service.
Unit-1 Monitor cleaned and 04/12/19 Monitor biofouling.
1 Reading returned to service.
04/15/19 to Unit-2 Monitor re-calibrated and Monitor Failed QC Check.
04/23/19 15 Readings returned to service.
Uriit-2 Monitor cleaned and 06/19/19 Monitor biofouling.
1 Reading returned to service.
Unit-2 Monitor cleaned and 07/20/19 Monitor biofouling.
3 Readings returned to service.
Unit-2 Monitor cleaned and 08/10/19 Monitor biofouling.
1 Reading returned to service.
Unit-1 Monitor cleaned and 08/08/19 Monitor biofouling.
1 Reading returned to service.
Unit-1 Monitor cleaned and 09/10/19 Monitor biofouling.
1 Reading returned to service.
10/09/19 to Unit-1 Monitor cleaned and Monitor biofouling.
10/10/19 6 Readings returned to service.
12/10/19 to Unit-2 Monitor cleaned and Monitor biofouling.
12/11/19 5 Readings returned to service.
12/21/19 to Unit-2 Monitor cleaned and Monitor biofouling.
12/24/19 10 Readings returned to service.
12/28/19 to Unit-2 Monitor cleaned and Monitor biofouling.
12/31/19 10 Readings returned to service.
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- b. Discharge Exceedance Events No discharge constituent or criteria exceedance events occurred during 2019.
- c. Discharge Bypass Events No discharge bypass events occurred during 2019.
- d. Closed Cooling Water Releases During 2019, 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 2019 from the component cooling water (CCW), and service cooling water (SCW) systems are presented below. The glutaraldehyde (Glut) and isothiazoline (lso) concentrations presented in the table are system concentrations, not concentrations at the point of discharge to receiving water.
Other analysis as applicable included total suspended solids (TSS) and oil and grease (O&G).
Volume Glut lso TSS O&G Reason &
Date System (gallons) (mg/I) (mg/I) (mg/I) (mg/I) Comments 02/13/19 Unit-1 sew 1,763 0.0 2.8 ND (<2.0) n/a Routine Maintenance 09/24/19 Unit-2 sew 3,480 n/a 3.7 n/a n/a Routine Maintenance 09/26/19 Unit-2 eew 500 84 N.D (<0.25) n/a n/a Routine Maintenance 10/07/19 Unit-2 eew 18,090 85 ND (<0.25) ND (<2.0) ND (<1.4) Outage Maintenance 10/17/19 Unit-2 eew 394.4 225 ND (<0.25) n/a n/a Outage Maintenance
- 8. Monitoring of Receiving Water
- 1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2019 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 2019. Results of 2018 RWMP data collection were submitted to the CCRWQCB on April 30, 2019. A table in Appendix 3 summarizes requirements and completed monitoring tasks for 2019.
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- 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 reportfor 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. Routine treatment consists of six20-minute injections per day (~t 4-hour intervals) of a blend of sodium bromide and sodium hypochlorite into the plant seawater intake conduits.
Each injection attempts to achieve a target concentration range of 250 to 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 throughout 2019.
Typically, unit discharge TRO values during conduit treatments were between 20 ppb and 50 ppb.
In conjunction with the chemical treatment program, untreated portions of the cooling water system were previou~ly painted with a non-toxic "foul release coating" to reduce or prevent attachment of fouling organisms.
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Annual Discharge Monitoring Report APPENDIX 1 (Attachment 2 to 2019 Annual SMR)
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 0011 Seawater Evaporator Slowdown 001 J Condensate Pumps Discharge
- Header Overboard 001 K Condenser Tube Sheet Leak Detection Dump Tank Overboard 001 L Steam Generator Slowdown 001 M Wastewater Holding and Treatment System 001 N Sanitary Wastewater Treatment System
- 001 P Seawater Reverse Osmosis System Slowdown 002 Intake Structure Building Floor Drains 003 Intake Screen Wash 004 Bio Lab and Storm Water Runoff 005i008,009,013,014,015 Yard Storm Drains 006,007,010,011,012 Storm Water Runoff 016 Bio Lab Seawater Supply Pump Valve Drain 017 Seawater Reverse Osmosis System Slowdown Drain
Annual Discharge Monitoring Report APPENDIX 2 (Attachment 3 to 2019 Annual SMR)
TABULAR AND GRAPHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING (REFER TO 2019 ANNUAL SMR)
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE oin TEMPERATURE (DEG F) FLOW(MGD)
INFLUENT EFFLUENT DELTAT Month hi&h low avg hi&h low avg hi&h av; hi&h low avg JAN 58.4 54.0 56.8 78.7 73.6 76.7 20.7 19.9 2486 2486 2486 FEB 57.6 53.1 55.8 77.6 70.4 74.8 20.0 19.0 2486 1279 1690 MAR 55.9 50.5 54.0 74.9 64.9 72.3 19.5 18.3 2486 1279 1827 APR 55.5 49.5 52.3 74.9 68.3 71.3 20.2 19.0 2486 1862 2378 MAY 55.2 49.5 52.8 74.0 68.4 71.5 19.0 18.7 2486 2486 2486 JUN 55.7 50.7 53.1 74.8 69.5 72.1 19.3 19.0 2486 2486 2486 JUL 54.6 51.1 52.9 73.5 70.1 71.7 19.0 18.9 2486 2486 2486 AUG 56.5 51.6 54.3 75.4 70.6 73.3 19.4 18.9 2486 2486 2486 SEP 57.9 52.1 55.3 77.9 68.9 74.5 20.2 19.2 2486 1239 2127 OCT 57.9 53.8 55.4 77.0 72.8 75.3 20.7 19.9 1239 1239 1239 NOV 60.5 55.8 58.0 80.0 75.7 78.1 21.0 20.1 1239 1239 1239 DEC 59.5 54.7 57.3 80.1 68.5 74.6 20.9 17.2 2486 717 1878 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/1) USED (lbs/day)
Month hi&h low avg hi&h low avg JAN 58 35 48 499 242 366 FEB 68 <10 37 302 0 208 MAR 65 <10 29 439 0 291 APR 69 15 38 490 230 416 MAY 49 16 28 446 184 416 JUN 43 20 29 475 158 428 JUL 54 16 34 475 475 475 AUG 39 17 24 479 396 437 SEP 55 16 28 493 331 413 OCT 37 <10 24 389 0 329 NOV 58 20 37 389 32 346 DEC 53 <10 40 619 0 459 Note: The residual chlorine limits iu Permit CA0003751, Order 90-09, is an instantaneous max of200 ug/1, and iucludes a time-based limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.
Pagel o/21
2019 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 Effluent Influent Effluent Influent Effluent JAN ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 16 10 FEB ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 15 DNQ(9)
MAR ND(5) ND(S) ND(5) ND(5) ND(5) ND(5) ND(5) ND(5)
- APR ND(5) ND(S) ND(5) ND(5) ND(5) ND(S) 21 ND(5)
MAY ND(5) ND(5) ND(5) ND(S) ND(5) ND(S) ND(5) ND(5)
JUN ND(5) ND(S) ND(5) ND(S) ND(5) ND(S) ND(5) ND(5)
JUL ND(S) ND(S) ND(5) ND(S) ND(5) ND(S) ND(S) ND(5)
AUG ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) ND(5)
SEP ND(5) ND(5) ND(5) ND(5) ND(5) ND(S) ND(5) ND(5)
OCT ND(5) ND(5) ND(5) ND(5) ND(5) ND(S) 21 ND(5)
NOV ND(5) ND(S) ND(5) ND(S) ND(5) ND(S) ND(5) ND(5)
DEC ND(5) ND(S) ND(5) ND(5) ND(5) ND(S) 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 (ug/1) 6-Mo.Med.
Effluent Parameter Influent Effluent Limit Arsenic 1.32 1.40 30 Cadmium 0.031 0.035 10 Cyanide ND(0.5) Ni>(0.5) 30 Lead DNQ(0.38) DNQ(0.36) 10 Mercury 0.00042 0.00014 0.2 Silver DNQ(0.008) DNQ(0.010) 2.9 Titariiwn ND(0.00074) ND(0.00074) none
- Phenolic Compounds ND(3.031) ND(3._03l) 150 (non-chlorinated)
- "Phenolic Compounds ND(0.567) ND(0.567) 10 (chlorinated)
"'*"'PCB's ND(0.196) ND(0.196) none
- Results for analysis of 8 target compounds. The sum of the 8 detection limits is 3.03.
- Results for analysis of 6 target compounds. The sum of the 6 detection limits is 0.57.
_*** 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 170 220 FEB MAR APR 230 160 MAY JUN JUL 220 240 AUG SEP OCT 145 216 NOV DEC 6-month median limit: 3,060 Page2of21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)
Discha~e: 001 002 003 004 001P Month Influent Effluent JAN 8.1 8.0 8.0 8.0 7.8 7.7 FEB 8.0 8.0 8.0 8.0 8.0 7.7 MAR 8.0 8.0 8.0 8.0 7.9 7.7 APR 7.9 7.9 7.8 7.9 7.8 7.4 MAY 7.9 7.9 7.9 7.9 7.9 7.6 JUN 7.8 7.8 7.9 7.8 7.9 7.6 JUL 7.7 7.8 7.7 7.8 7.8 7.6 AUG 8.0 7.9 7.9 7.9 7.8 7.6 SEP 7.9 7.8 7.8 7.8 7.8 7.6 OCT 7.9 7.8 7.8 7.8 8.0 7.6 NOV 8.0 8.0 7.9 7.9 7.9 7.7 DEC 7.9 7.9 7.9 8.0 8.0 7.7 DISCHARGE OOIF SUSPENDED OIL & GREASE (mg/I) SOLIDS (mg/I)
Month high av; hi;h avg JAN DNQ(2.9) DNQ(2.9) DNQ(3) DNQ(3)
FEB DNQ(3.7) DNQ(3.7) DNQ(2) DNQ(2)
MAR DNQ(2.4) DNQ(2.4) DNQ(2) DNQ(~)
APR DNQ(4.0) DNQ(4.0) DNQ(4) DNQ(4)
MAY 6.9 6.9 9 9 JUN DNQ(2.2) DNQ(2.2) <S <5 JUL DNQ(l.8) DNQ(l.8) DNQ(2) DNQ(2)
AUG DNQ(3.0) DNQ(3.0) <5 <5 SEP DNQ(2.9) DNQ(2.9) DNQ(3) DNQ(3)
OCT DNQ(2.5) DNQ(2.5) DNQ(4) DNQ(4)
NOV ND(l.4) ND(l.4) DNQ(2) DNQ(2)
DEC DN!;J(3.4j DN!;J(3.4 DN!;J(4j DN!;J(4j limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.
DISCHARGE 001N (Monthly Summary of Weekly Data)
SUSPENDED SETTLEABLE GREASE & OIL (mg/I) SOLIDS (mg/I) SOLIDS (ml/I)
Month high low avg high low avg high low avg JAN DNQ(l.5) ND(l.5) DNQ(l.5) 14 6 10 DNQ(0.1) DNQ(0,1) DNQ(0.1)
FEB <5.0 ND(l.5) <5.0 41 15 25 0.3 DNQ(0.1) 0.1 MAR DNQ(l.7) ND(l.5) DNQ(l.5) 23 9 15 DNQ(0.1) DNQ(0.1) DNQ(0.1)
APR DNQ(l.5) ND(l.5) DNQ(l.5) 18 6 11 0.3 DNQ(0.1) 0.1 MAY DNQ(2.3) ND(l.5) DNQ(l.5) 38 5 13 0.3 DNQ(0.1) 0.1 JUN DNQ(l.5) ND(l.5) DNQ(l.5) 18 4 10 0.3 DNQ(0.1) 0.1 JUL DNQ(l.5) ND(l.5) DNQ(l.5) 30 3 15 DNQ(0.1) DNQ(0.1) DNQ(0.1)
AUG ND(l.5) ND(l.5) ND(l.5) 15 4 9 DNQ(0.1) DNQ(0.1) DNQ(0.1)
SEP DNQ(2.8) ND(l.5) DNQ(l.5) 35 4 17 DNQ(0.1) DNQ(0.1) DNQ(0.1)
OCT ND(l.5) ND(l.5) ND(l.5) 12 7 9 DNQ(0.1) DNQ(0.1) DNQ(0.1)
NOV ND(l.5) ND(l.5) ND(l.5) 19 6 11 DNQ(0.1) DNQ(0.1) DNQ(0.1)
DEC DN!2(1.5j ND(l.5j DN00.5l 20 3 13 DN0(0.1) DNO(O.lj DN!;J(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 o/21
2019 Annual Summary Report on Discharge Monitoring atthe Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/1) 001D 001H OOlL OOlF Month Ai: Cd Cr Cu Ai: Cd Cr Cu Ai: Cd Cr Cu Ai: Cd Cr Cu JAN DNQ(0.23) ND(0.15) DNQ(l.7) DNQ(2.6) ND(5) ND(5) 15 38 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) DNQ(6) ND(5)
FEB MAR APR ND(0.10) ND(0.15) ND(l.6) DNQ(i.7) ND(5) ND(5) 30 53 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 48 DNQ(8)
MAY JUN JUL DNQ(0.14) ND(0.15) 5.3 ND(l.7) ND(5) ND(5) 45 32 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 133 DNQ(8)
AUG SEP OCT DNQ(0.14) ND(0.15) DNQ(2.0) DNQ(2.2) ND(5) ND(5) 30 117 ND(5) ND(5) DNQ(5) <JO ND(5) ND(5) 36 DNQ(8)
NOV DEC limit: none Note: 001D, 001H and OOlL analyses performed on quarterly composites.
OOlF analyses performed quarterly on a composite of weekly samples.
DISCHARGE 001D, H, L, F, METALS (avg. ug/1) 001D 001H OOlL OOlF Month Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn JAN ND(0.080) ND(l.9) DNQ(l.5) 23 ND(0.080) DNQ(9) ND(5) DNQ(7) ND(0.080) ND(5) ND(5) ND(5) ND(0.080) ND(5) ND(5) 36 FEB MAR APR ND(0.080) ND(l.9) DNQ(2) 69 ND(0.080) 11 JO DNQ(7) ND(0.080) ND(5) ND(5) ND(5) ND(0.080) 62 ND(5) 19 MAY JUN JUL DNQ(0.15) DNQ(4.7) ND(0.98) 420 ND(0.080) 21 DNQ(5) <IO DNQ(0.080) ND(5) ND(5) DNQ(5) ND(0.080) 158 ND(5) 16 AUG SEP OCT ND(0.080) DNQ(2.0)
- 3.0 100 ND(0.080) 29 10 DNQ(9) ND(0.080) ND(5) ND(5) <10 ND(0.080) 49 ND(5) 12 NOV DEC limit: none Note: 001D, 001H and OOlL analyses performed on quarterly composites.
OOlF analyses performed quarterly on a composite of weekly samples.
Page4 o/21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (mg/I)
Month OOlD* 001G 001H 0011 OOlJ 001K OOlL 001M 001P 002 003 JAN <5 ND(2) ND(2) ND(2) <5 7 16 FEB <5 ND(2) ND(2) ND(2) ND(2) DNQ(4) <5 ND(2) 23 MAR <5 ND(2) ND(2) ND(2) ND(2) DNQ(2) DNQ(2) 18 APR <5 ND(2) ND(2) ND(2) DNQ(2) 10 9 MAY <5 ND(2) ND(2) ND(2) DNQ(2) DNQ(2) ND(2) DNQ(2)
JUN <5 No Sample ND(2) ND(2) ND(2) 23 <5 8 JUL <5 ND(2) ND(2) ND(2) ND(2) DNQ(2) DNQ(2)
AUG <5 ND(2) ND(2) ND(2) DNQ(2) <5 9 SEP <5 ND(2) ND(2) ND(2) ND(2) ND(2) ND(2) ND(2)
OCT <5 ND(2) ND(2) ND(2) DNQ(2) 24 <5 36 NOV <5 ND(2) ND(2) ND(2) DNQ(2) <5 ND(2) 7 DEC <5 ND(2) ND(2) ND(2) ND(2) <5 DNQ(2) 6 Limit: 30 30 30 30 30 30 30 30 30 30
- Discharges from 001D are batched. Monthly averages are flow weighted.
Note: No discharges occnrred from 0011 and 001Kduring 2019.
Blank spots for other discharge points indicate that no discharge occurred during that particular month.
GREASE&OIL Averages by Month (mg/I)
Month oom* 001G 001H 0011 OOlJ 001K OOlL 001M 001P 002 003 004 JAN 5.2 ND(l.4) ND(l.4) ND(l.4) ND(l.4) ND(l.4) ND(l.4) ND(l.4)
FEB ND(l.4) DNQ(2.0)
MAR APR DNQ(l.5) ND(l.4) ND(l.4) ND(l.4) ND(l.4) ND(l.4) DNQ(l.8) ND(l.4)
MAY ND(l.4)
JUN JUL <5.0 ND(l.4) ND(l.4) ND(l.4) DNQ(l.4) DNQ(l.4) ND(l.4) ND(l.4)
AUG SEP ND(l.4)
OCT DNQ(2.7) ND(l.4) ND(l.4) ND(l.4) ND(l.4) DNQ(l.4) DNQ(l.4) ND(l.4) ND(l.4)
Limit: 15 15 15 15 15 15 15 15 15 15 15 15
- Discharges from 001D are batched. Averages are flow-weighted and calculated monthly. Monthly averages are averaged for quarter and reported.
Note: No discharges occurred from 0011 and OOlKduring 2019.
Page5 of21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tu. and tuJ 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 AUG 0.00 0.00 SEP 1.00 OCT 0.00 o.oo 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 OOIN ANNUAL ANALYSES Sludge Parameter Result Limit Percent Moisture 99.14% None Total Kjeldahl Nitrogen 85000 mg/kg dry None Ammonia(N) 7300 mg/kg dry None Nitrate(N) . ND(120) mg/kg dry None Total Phosphorous
- ND(53000) mg/kg dry None pH 7.0 s.u. None Oil and Grease ND(l2)% dry None Boron DNQ(43) mg/kg dry None Cadmium DNQ(0.34) mg/kg dry lOXSTLC*
Copper 92mg/kg dry lOXSTLC Chromium 1.7 mg/kg dry . lOXSTLC Lead DNQ(l.4) mg/kg dry lOXSTLC Nickel 3.6 mg/kg dry lOXSTLC Mercury DNQ(0.19) mg/kg dry lOXSTLC zinc 200 mg/kg dry lOXSTLC Volume 0.81 tons dry None Note: Annual samples were collected in October.
- STLC = Soluble Threshold Limit Concentration Page6of21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT Tcmp:ralllre { 0F}
90.0 80.0 70.0 60.0 p:..
50.0
!'.l A
Si 40.0 30.0 20.0 10.0 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 DISCHARGE 001 EFFLUENT Tcmpt:ralllre ( 0F}
90.0 p:..
80.0 70.0 60.0 50.0
~
00 u 40.0 A
30.0 20.0 ~ Avel"l,p:
10.0 - Low 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Page 7 o/ 21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT Flow(MGD) 3000 2500 i;'
Q
~
II) 2000 i
C!)
1500 i 1000 - Limit 500 0
-A-Hip Low JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 DISCHARGE 001 EFFLUENT MOJillJly Delta T ( 0F) 25
~ 15 I
Q 10 5
0 - - - - + - - - - - + - - - - - t - - - + - - - - - + - - - - - - + - - - - - + - -------<----+------+---------<
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Page8of21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Total Cblorinc ResidlJal, ug/1 80 70 60 50
~
40 l
30 20 10 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: Values plotted at zero were below the reporting limit.
DISCHARGE 001 Total Cblorinc Used, poll11ds per day 700 600 A
>. 500
., 400 Pot j 300 Pot 200 100 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Page 9 of21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Copper (molll/Jly avenge, ug/1)
- Pumit Umlt and Rq,ortlna Umil
-+-IDfluont 12 10 8
t:!1:111 6
- s 4
2 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 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/1.
DISCHARGE 001 Nickel (molll/Jly avcn,gi:!, ug/1) 35 30 t:!l>Q 25 20
-Dilcbors* Pormil Umit
-Allalytical Rq,ortiDg Limit
- s 15 10 5
0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2019 ote: 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 ickel is 100 ug/1.
Note: Data points on this chart overlap.
Page 10 of 21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zinc (moodlly avenge, ug/1) 80 60
- Discbaqe Permit Umit
1n11ue.m 50 - Effluem 140 30 20 0 +-----+- - -"'W:-- -.....- - ----- --4,-----,._- -......-----,...- -.....-----'.....- -.....
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Note: Multiple data points on this chart overlap.
DISCHARGE 001 CbromiUID (moodlly average, ug/1) 12 10 8
- Modim llld Anlly1ical Rq,ortio& limit
~
~
6 4
2 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 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/1) and are plotted on this chart.
The daily maximum limit for chromium is 40 ug/1.
Note: Data points on this chart overlap.
Page 11 of 21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant pH 8.2 t§. 7.6
-=--OOIIDllDmt 7.4 - 001 EHIUODI
--+-002
--0--003 7.2 -004
-.001P 7.0 + - - - - + - - - + - - - - + - - - + - - - - t - - - - t -- -- + - - - - t - - - - + -- --t-------1 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: Several data points on this chart overlap.
Discharge 001 Ammonia (as N, ug/1) 3500 3000 2500
~
gi>
2000 1500 1000
-InllUOIII 500 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 12 o/21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE OOlF Oil Jt Grease (Maximum, mgll) 25.0 15.0 ()...- ---n- - -()...- ---<1------(, -- --<,..---<)-.--<,-----<:f----O----n----<_J
- DailyMuimm>.Umit
-<>- Mm>dliy A__,. Umit 10.0 -s..-(Mlllmmn)
-Amlyllcal Rq,oq Umit 0.0 - l - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - ! - - - - - - - - - l - - - - - - - - - l - - - - + - - - - - + - - - - + - - --=-"'---------j JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: Values plotted at zero were below the detection limit.
DISCHARGE OOlF Suspended Solids (Maximum, .mg/I) 120 100
- Daily Maximum Limit 80 -<>-Moolhly Avenge Limit
-+-Saq,le Result (Muimm,)
i 60 - + - Analyticll Rq,orting Limit 40 20 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: Maximum values are plotted.
Page 13 o/21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant
- Daily Maximum Limit DISCHARGE 001N --<>--Monthly Avuqe Limit Oil & Grease {mg/1) - + - Daily MuimJm
--+-AvCD&C 25
- Analytical R<porting Limit 15 u---~J----~---~--~J----~---~--~J----~---~---~---(J
} 10 o C--+------=::t::===t:::::::"'.'.=!=~~~t=::::;;;:tz:::==!==:::::s~===t:~~
JAN FEB MAR APR MAY RJN JUL AUG SEP OCT NOV DEC 2019 Note: Daily maximum and monthly average values overlap at several points on this plot.
-Monthly A_. Limit DISCHARGE 001N Suspt:Dded Solids (mg//) -+-Daily Muimum 70 --+-Aveng,e 60 ------------------------------------------------
50
- 40 if 30 20 10 0 +---------l-----+----+---------l-----+----+-------+----+----+------<----<
JAN FEB MAR APR MAY RJN JUL AUG SEP OCT NOV DEC 2019 Note: There is no limit for daily maximum values. The average values are below the monthly average limit.
DISCHARGE 001N Scttlt:able Solids (ml/1) 3.5 3-----------------------n-------------------------111 2.5
- D a i l y Muimumllmit
--<>--Monthly A_. Limit
-+-Daily Muimum
--+-Average lu---~J----~---~--~J----~---~--~J----~---~---~---(J 0.5 ob~~~~~t;;;;;;t;;;;~~~=*===*== =*===*== =*
JAN FEB MAR APR MAY RJN JUL AUG SEP OCT NOV DEC 2019 Note: Values plotted at zero were below the detection limit.
High, average, and low values overlap at several points on this plot.
Page 14 o/21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D Qu;utl:rly Metals (ugll) 25 oSilvcr
- Cadmimn 20 *Chromium
- Copper 15 10 5
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001D Qu;utl:rly Metals (1J8II) 450 DNickcl 400
- Lead 350 *Zinc 300
- Mcrrury
~ 250
='
200 150 100 50 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The ana lyte was not detected at or above the detection limit for values plotted at zero.
Page 15 of 21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE OOlF 140 Qwu:terly Metals (ug/1) 120 CSilvcr
- Cadmium 100
- Chromium 80
~
00
- s 60 40 20 0
JAN FEB MAR APR MAY RJN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE OOlF Quartaly Metals (ugll) 180 aMcrcury
- Nickel 160
- Lead 140
- Zinc 120
~ 100 00
- s 80 60 40 20 0
JAN FEB MAR APR MAY RJN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 16 of 21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001H Quarterly Mt:Ws (1J8ll) aSilvcr 120 *Cadmium aChromiwn 100 Copper 80 i 60 40 20 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE 001H Quarterly Metals (11811) 50 45 aMcrt:ury aNickcl 40
- Lead 35 a Zinc 30
~
25 20 15 10 5
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 17 of21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE OOlL Quarterly Metals (ug/1) 25 20 aSilvcr
- Cadmimn
- Chromium 15 Copper 10 5
O + - - --+-- - - + - - - - +- - - ,! - - - - + - - - -+ - - ---+----+----+- - ----+----------;
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
DISCHARGE OOlL Quarterly Metals (ug/1) 25 20 aMcrcury
- Nichl 15
- Lead a Zinc 10 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: The analyte was not detected at or above the detection limit for values plotted at zero.
Page 18 o/21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS (A vmigc, mg/I) 35 30 -
25 - Moalllly Avenge llmit
--+-OOID 20 - O OIG
} 15
- O OIH 10 5
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 ote: Points on chart may overlap. Va lu es plotted at zero were below the detection limit MONTHLY TOTAL SUSPENDED SOLIDS (A vengc, mg/I) 35 30 -
25 - Moatbly Avmpllmit
--+-OOIJ 20
} 15
-OOIL
-OOIM 10 5
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 ote: Points on chart may overlap. Values plotted at zero were below the detection limit MONTHLY TOTAL SUSPENDED SOLIDS - Mond>ly Avorago Limit (OOIP & 002)
--+-OOIP (A vcngc, J118ll) - 002 40 -003 35 30 25
} 20 15 10 5
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 ote I: Points on chart may overlap. Values plotted at zero were below the detection limit ote 2: Monthly average limit only applies to 001 P and 002. 003 has no monthly average limit.
Page 19 o/21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE (A veragc, 111811) 16.0 14.0 II a * * * * *
- a *
- OOID 12.0 - OOIG 10.0 - 0018
- Mmllhly Avenge Umit
} 8.0 6.0 4.0 2.0 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: Values plotted at zero were below the detection limit. Less than values are plotted at the value.
QUARTERLY OIL& GREASE
( A veragc, 111811) 16 14 a
- a a * * * *
- II
- 0011 12
- OOIL 10 - O O IM
- Moodily Avenge limit i 8 6
4 2
0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Note: Values plotted at zero were below the detection limit.
QUARTERLY OIL & GREASE (Avenge, mg/I}
16 14 * * * * * * * * * *- OOIP
-~
12 - 002 10 - 003 i 8 6
- MoDlhly Awrqe limit 4
2 0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 ote: Values plotted at zero were below the detection limit.
Page20of21
2019 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY
( 6-Month Median) 6
!!3 5
- a a r:11
- * * * * *
- a
- a 4 Chronic Bioassay Results
-o-- 6-mo. Median Acute Llmit
_._ Acute Bioassay Results
-~ 3
-~t.)
0 2
- - - Chronic Llmit
~ Acute 6-month Median E-4 1
0 IAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 Page21 o/21
Annual Discharge Monitoring Report APPENDIX 3 (Attachment 4 to 2019 Annual SMR)
SUMMARY
OF RWMP MONITORING FOR 2019 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 Mar21 Jun 10 AuQ 16 Dec 12 Vertical Band Transects 5 / 4x Feb 21 Jun 06 AuQ 02 Dec 12 Benthic Stations 8 / 4x Apr16 Jun 13 AUQ 21 Nov 14 Fish Observation Transects 12 / 4x May 01 Jun 27 Sep 18 ' Nov 08 Bull Kelp Census */1x n/a n/a n/a Oct 29 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).