L-2002-526, Pacific Gas and Electric Company First Quarter 2002 Report on Discharge Monitoring at Diablo Canyon Power Plant

Pacific Gas and Electric Company First Quarter 2002 Report on Discharge Monitoring at Diablo Canyon Power Plant

ML021210035
Person / Time
Site:	Diablo Canyon
Issue date:	04/20/2002
From:	Oatley D Pacific Gas & Electric Co
To:	Briggs R Office of Nuclear Reactor Regulation, State of CA, Central Coast Regional Water Quality Control Bd
References
DCL-2002-526
Download: ML021210035 (101)

Text

PacificGas and ElectricCompany David H. Oatley Diablo Canyon Power Plant Vice President P*0.Box 56 Diablo Canyon Operations Avila Beach, CA 93424 805.545.4350 Fax: 805.545.4234 Date: ýpri120, 2002 Certified/Return Receipt I #7001-03600000-2103_2940 I

PG&E Letter DCL-2002-526 California Regional Water Quality Control Board Central Coast Region Attn: Monitoring and Reporting Review Section 81 Higuera Street, #200 San Luis Obispo, CA 93401

Dear Mr. Briggs:

In accordance with Order 90-09, NPDES No. CA0003751, enclosed is the First Quarter 2002 Report on Discharge Monitoring at Diablo Canyon Power Plant (Enclosure 1).

Facility Name: Pacific Gas & Electric Company Diablo Canyon Power Plant Address: P.O. Box 56 Avila Beach, CA 93424 Contact Person: Drew A. Squyres Job

Title:

Supervisor, Environmental Operations Phone Number: 545-4439 WDR/NPDES Order Number: Order No. 90-09, NPDES No. CA0003751 Type of Report: (check one) QUARTERLY ANNUAL 9 El Quarter: (check one): Ist 2 nd rd th 3 4 09 El El 11 Year: 2002 (Annual Reports for DCPP are Jan-Dec)

Violation(s) (Place an X by the appropriate choice): El No (there are no violations to report) 0l Yes Note: Please see Overview section, Item 5 If Yes is marked (complete a-g):

a) Parameter(s) in Violation:

b) Section(s) of WDRJNPDES Violated:

c) Reported Value(s) d) WDRINPDES LimitlCondition:

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) 2

PG&E Letter DCL-2002-526 Mr. Briggs, CRWQCB April 20, 2002 Page 2 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, please contact Drew Squyres at (805) 545 - 4439.

Sincerely, David H. Oatley 2002526/RDH/kmo 3

PG&E Letter DCL-2002-526 Mr. Roger W. Briggs April 20, 2002 Page 2 cc: Michael Thomas, CCRWQCB 81 Higuera Street, Suite 200 San Luis Obispo, CA 93401 Debra Johnston California Department of Fish and Game 20 Lower Ragsdale, Suite 100 Monterey, California 93490 Regional Administrator, Region 9 U. S. Environmental Protection Agency 75 Hawthorne Street San Francisco, CA 94105 Attention: Carey Houk (W-5-3)

Resident Inspector, David Proulx U.S. Nuclear Regulatory Commission Diablo Canyon Power Plant 104/5 Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Dr., Suite 400 Arlington, TX 76011-8064 Director, Division of Reactor Projects U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Dr., Suite 400 Arlington, TX 76011-8064

/Document Control Desk U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Enclosure

PG&E Letter DCL-2002-526 ENCLOSURE 1 FIRST QUARTER 2002 REPORT ON DISCHARGE MONITORING AT DIABLO CANYON POWER PLANT

PACIFIC GAS AND ELECTRIC COMPANY NUCLEAR POWER GENERATION First Quarter 2002 REPORT ON DISCHARGE MONITORING AT DIABLO CANYON POWER PLANT (NPDES No. CA0003751)

PACIFIC GAS AND ELECTRIC COMPANY First Quarter 2002 REPORT ON DISCHARGE MONITORING AT DIABLO CANYON POWER PLANT TABLE OF CONTENTS OV E RV IE W ............................................................................... I

SUMMARY

OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent ....................... 2 B. Monitoring of Receiving Waters .................................... 2 C. Acti-Brom Treatment Program ...................................... 3 APPENDIX 1: NPDES Discharge Points APPENDIX 2: Influent and Effluent Monitoring - January 2002 APPENDIX 3: Influent and Effluent Monitoring - February 2002 APPENDIX 4: Influent and Effluent Monitoring - March 2002 APPENDIX 5: Acute Bioassay, January 9-13, 2002 APPENDIX 6: Chronic Bioassay, January 10-12, 2002

OVERVIEW

1. During the first quarter of 2002, discharges occurred from Discharge Paths 001 (once through cooling water), 001B, 001D, 001F, 001G, 001H, 001J, 001L, 001M, 00IN, 001P, and 002 through 15. No discharges occurred from 001K, 016, and 017. A list of all of the permit discharge Discharge Paths 001E, 0011, pathways, including name and number, is provided in Appendix 1.

2. The substances listed in Table B of the 1990 California Ocean Plan were each analyzed for and reported in the permit renewal application for Diablo Canyon submitted in 1994.

There have been no changes in the activities conducted significantly affected the results previously reported at the plant that would have in the 1994 renewal application.

California Ocean Plan Table B substances that were not analyzed for this quarter were not added to the discharge stream.

3. During the first quarter of 2002, maintenance activities that cooling water systems were performed and are summarizedrequired draining of closed concurrence from the CCRWQCB in a letter dated below. PG&E received July 19, 1995 (PG&E Letter DCL-95 156) regarding the use of glutaraldehyde and isothiazolin growth and corrosion in PG&E's closed cooling water to control microbiological systems. Discharges are drained at a flowrate such that the chronic toxicity level would be below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.

Date System Volume Glutaraldehyde (al) (mgI Isothiazolin (rng/I 1/18/02 Unit 2 SCW 240 18 0 2/19/02 Unit 1 ICW 3200 81 9 3/14/02 Unit 2 SCW 33000 0 2

4. On 2/19/02, a courtesy call was placed to RWQCB staff regarding a minor break in a sewer line after treatment prior to discharge into the circulating cooling water. A small volume (estimated to be 630 gallons) of treated waste surface of the ground in the vicinity of the break. Therefrom the break seeped to the was no discharge to water.

The break was repaired on 2/19/02. RWQCB staff agreed this was not a violation and requested that a brief summary be included in the quarterly report.

5. On 4/17/02, plant environmental staff became aware that the sample "hold times" for mercury had exceeded the specified hold times. For flowpaths 001D, 001F, 001H, and 001 L, which are sub-flows that discharge into the main circulating water flowpath 001, the permit calls for quarterly composite sampling. Samples provide representative sampling over an entire quarter, are collected in an effort to which is longer than the 28-day hold time. All sample results were non-detect for Mercury.

In addition to the quarterly sampling, the plant also performs annual sampling of the 001 Outfall. These annual samples are grab samples that have consistently met the hold time specifications. Results for mercury at the 001 Outfall have been consistently non detect even at significantly lower levels of detection.

I

DCPP is refining established methods for sampling and analysis in order minimize the potential for future analyses to exceed hold times. During a phone conversation with Michael Thomas of RWQCB staff on 4/17/02, Michael advised that the annual samples indicated the plant was in compliance and that the check box for Violation in the cover letter should not be checked. He asked that a statement summarizing the conversation and the sampling issue be included in this report.

2

SUMMARY

OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent

1. The results of the January, February, and March 2002 plant influent and effluent monitoring are reported on Discharge Self Monitoring Report (DSMR) forms in Appendices 2, 3, and 4, respectively. Additional laboratory results are included behind the DSMR forms to ensure that all analytical data are reported.

2. Results from one acute bioassay on water sampled from Discharge 001, performed January 9-13, 2002, are included in Appendix

5. The acute toxicity test results show that toxicity was 0.00 (no mortality).

3. Results from one chronic bioassay on water sampled from Discharge 001, performed January 10-12, 2002, are included in Appendix

6. Test results show that chronic toxicity was 1.0 (no chronic toxicity).

B. Monitoring of Receiving Waters

1. Ecological Studies at Diablo Canyon Ecological studies in the vicinity of Diablo Cove conducted during the first quarter continued under the Diablo Canyon 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 (DCL-99-503) from PG&E dated January 8, 1999. 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).

1. In Situ Bioassay Results of the Mussel Watch Program will be reported to from the California Department of Fish and Game in their the CCRWQCB directly periodic report for this program.

C. Acti-Brom Treatment Program Diablo Canyon Power Plant is continuing its use of the proprietary chemical Acti-Brom to control the growth of macrofouling organisms in its main circulating water conduits.

Both circulating water conduits of each Unit can be chemically treated simultaneously.

Each treated conduit typically receives a twenty-minute injection every four hours (six injections a day) of Acti-Brom in combination with sodium hypochlorite (NaOCI). Each injection attempts to achieve a target concentration of 200 parts per billion Total Residual Oxidant (TRO) when measured at the inlet waterbox of the condenser.

Discharge TRO, measured at the plant outfall, remained below NPDES limitations.

Simultaneous sodium hypochlorite and Acti-Brom treatment of Unit I conduits continued until January 24, 2002. At this time Acti-Brom injections were terminated and sodium hypochlorite injections twice daily were initiated to control microfouling in the condensers 3

in preparation for the Unit I refueling outage scheduled to begin at the end of April.

Unit I microfouling injections continued through the end of the first quarter with one brief interruption during a reactor trip in February.

Simultaneous sodium hypochlorite and Acti-Brom treatment of both Unit 2 conduits continued six-times daily throughout the first quarter with brief interruptions in January for the 2-2 tunnel cleaning and in February during a reactor trip.

4

APPENDIX I DIABLO CANYON POWER PLANT NPDES DISCHARGE POINTS DISCHARGE NUMBER DESCRIPTION 001 Once-Though Cooling Water 001 A Firewater Systems 001 B Auxilia Salt Water Coolin Systei 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 WHater Effluent System Waste 001 H Condensate DeSineetlizer u

RDtt rTankOebat 001 LJ 001 Seawatmr GE pratorBlowdown Condensate Pumps Discharge

• Header Overboard 001 K Condenser Tube Sheet -Leak Detection Duimp rank Overboard 001 L Steam Generator Blowdown 001 M Wastewater Holding and Treatment System 001 N Sanitary Wastewater Treatment QSstem 001 P Seawater Reverse Osmosis System Blowdown 002 Intake Structure Building Floor Drains Intake Screen Wash Bio Lab and Storm Water Runoff Yard Storm Drains Storm Water Runoff Bio Lab Seawater Supply Pump Valve Drain Seawater Reverse Osmosis System Blowdown Drain

APPENDIX 2 DIABLO CANYON POWER PLANT Influent and Effluent Monitoring January 2002

CALIFORNIA CONTROL REGIONAL WATER QUALITY BOARDDABOCNONULAPWEPAT DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CECOASTREGO NTRAL CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PD BOX 56 AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 1 I FACILITY I.D. YEAR / MO / DAY YEAR / MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 01 / 01 ENDING 02 / 01 / 31 6 CA0003751 STATION INFLUENT EFFLUENT 001 DELTA TEMP EFFLUENT 001 INFLUENT EFFLUENT 001 EFFLUENT001P EFFLUENT 002 ANALYSIS TEMPERATURE TEMPERATURE TEMPERATURE FLOW pH pH pH pH UNITS DEGREES F DEGREES F DEGREES F MGD pH UNITS pHUNITS pH UNITS pH UNITS SMPLTYPE METERED METERED METERED RECORDED GRAB GRAB GRAB GRAB FREQ. CONTINUOUS CONTINUOUS CONTINUOUS DAILY MONTHLY MONTHLY ("1 MONTHLY MONTHLY

- m mm m m **m mm *

• 1 54.8 73.9 19.1 2486 2 54.9 74.0 19.1 2486 3 55.0 74.1 19.1 2486 4 55.1 74.3 19.2 2486 5 55.0 74.2 19.2 2486 6 55.1 74.3 19.2 2486 7 55.4 74.6 19.2 2486 8 55.7 74.8 19.1 2486 9 55.3 74.4 19.1 2486 8.0 8.0 7.8 3 8.0 10 54.5 73.6 19.1 2486 11 55.4 74.5 19.1 2486 12 55.5 74.6 19.1 2486 13 55.1 74.2 19.1 2486 14 54.7 73.7 19.0 2486 15 54.5 74.7 20.2 1888 16 54.4 74.5 20.1 1862 17 54.3 74.7 20.4 1862 18 54.1 74.4 20.3 1862 19 54.0 73.2 19.2 1992 20 53.4 72.6 19.2 2486 21 53.1 72.4 19.3 2486 22 52.5 71.9 19.4 2486 23 52.0 71.6 19.6 2486 24 52.2 71.6 19.4 2486 25 52.2 71.7 19.5 2486 26 52.6 71.9 19.3 2486 27 53.2 72.6 19.4 2486 28 53.0 72.5 19.5 2486 29 52.5 72.2 19.7 2486 30 52.4 72.2 19.8 2486 31 52.4 72.0 19.6 2486 I

ONTHLYAVG 54.0 73.4 19.4 2390 8.0 8.0 ONTHLYHIGH 7.8 8.0 55.7 74.8 20.4 2486 8.0 8.0 7.8 ONTHLYLOW 52.0 71.6 19.0 8.0 8.0 1862 8.0 7.8 8.0 r

TIMESEXCEEDED NO LIMIT NO LIMIT MAX 22= 0 MAX 2760 = 0 NO LIMIT 8.I.

NO LIMIT TIMESEXCEEDED NO LIMIT NO LIMIT

("*)

TIMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

"EXCEPTDURING DEMUSSELING.

DAILY WHEN DISCHARGING CHEMICAL CLEANING WASTES FROM DISCHARGES 001D, F, I, L,AND/OR M.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD CENTRAL DIABLO CANYON NUCLEAR POWER PLANT 81 HIGUERA COAST REGION PO BOX 56 81SHIUR AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 2 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 01/ 01 ENDING 02 / 011 31 6 CA0003751 STATION EFFLUENT 803 EFFLUENT 004 EFFLUENT 001N EFFLUENT001P ANALYSIS EFFLUENT003 EFFLUENT 001F EFFLUENT 001 EFFLUENT pH pH OIL&GREASE OIL&GREASE 001 OIL&GREASE OIL&GREASE T CHLOR RES CHLORINE UNITS pHUNITS pHUNITS migA USED mgh1 mgA mgA ug/i SMPLTYPE GRAB GRAB COMPOSITE GRAB lbs/day GRAB GRAB GRAB RECORDED FRED. MONTHLY MONTHLY WEEKLY WEEKLY) WEEKLY (*) MONTHLY 2 per CYCLE MONTHLY 2

12 32 706 3

12 32 658 3

4 12 35 610 3<

12 50 610 6

12 29 610 7

12 29 610 8

12 31 610 12 41 9 600 8.0 8.0 < 3 12 31 583 10 3 11 12 60 576 11 12 13 12 31 564 12 34 557 14 12 32 557 15 12 50 552 12 80 16 490 3 ND(5) 12 55 490 18 12 55 490 19 10 80 427 20 11 88 439 21 12 35 554 22 12 38 533 23 12 32 533 23 12 24 533 24 3 5 11 24 432 25 10 22 346 26 10 22 346 27 10 22 355 28 10 20 355 29 10 24 355 30 10 24 350 31 10 24 346 10 50 346 ONTHLY AVG 8.0 8.0 <5 NO NO < 3 ONTHLY 39 509 HIGH 8.0 8.0 16 DISCHARGE DISCHARGE < 3 88 MONTHLY LOW 8.0 8.0 < 706 ND(5) 3 20 346

< 3 20 MESEXCEEDED NO LIMIT NO LIMIT MOAVG 15=0 MOAVG 15=0 MOAVG 15=0 MOAVG 15=0 IMESEXCEEDED 0 1MAX 200 = 0 DMAX20=0 D MAX20=0 DMAX20=0 DMAX20=0 NO LIMIT IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

WHEN 01IN IS DISCHARGING TO 001P.

WHEN 001P IS DISCHARGING TO 003.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424

<5 33 ND(5)

DMAX100=0 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

FLOW-WEIGHTED AVERAGES REPORTED.

j PRINCIPAL EXECUTIVE OFFICER GREGORY M.RUEGER ]

UI*lU;ANLt: 6LF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 PAGE: (M) 4 DAY YEAR / MO / DAY STATE CODE NPDES PERMIT

'1 / 01 ENDING 02 / 01 / 31 6 CA0003751 EFFLUENT 00H

)s SUSPENDED SOLIDS mg/I NET rag/I1st FLTR mag/i2id FLTR mag/iNET GRAB MONTHLY 7 < 17 ND(5)

NL ND(5)

NO{5) 7 7

ND(5) 7 MO AVG 30=0 NO LIMIT NO LIMIT MO AVG 30=0 DMAX 100= 0 D MAX100= 0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

UIOUtAKl=, bLLI- MUNI TRING REPORT PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 PAGE: (M) 5 ky YEAR / MO / DAY STATE CODE NPDES PERMIT 0

/ 01 ENDING 02 / 01 / 31 6 CA0003751 EFFLUENT 001iJ SUSPENDED SOLIDS mg/I NET mg/i IstFLTR mg/i 2nd FLTR mg/i NET GRAB

- MONTHLY NO NO DISCHARGE DISCHARGE MO AVG 30 = 0 NO LIMIT NO LIMIT MO AVG 30 = 0 MAX 100 = 0 MAX 100 = 0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT JCONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

jCENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 C81 HIGUERA SAN LUIS OBISPO, CA 93401 AVILA BEACH, CALIF 93424 NO ND(5)

DISCHARGE ND(5)

ND(5)

DMAX 100 = 0 DMAX 100 = 0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

UJI)U1RKtl ZSELFMONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 PAGE: (M) 7 DAY YEAR / MO / DAY STATE CODE NPDES PERMITA 1 01 ENDING 02 1 01 / 31 6 CA0003751 EFFLUENT 0011N EFFLUENT 001P iS SUSPENDED SLDS SUSPENDED SOUDS mgll NET mg/1 mg/I1stFLTR mg/l2nd FLTR mg/I NET COMPOSITE GRAB WEEKLY MONTHLY 9

5 24 2 22 16 7

7 5 10 22 5 16 22 5 7 22 MOAVG30= 0 MOAVG60=0 NO LIMIT NO UMIT MOAVG30= 0 DMAX100 = 0 .........

REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT

.CENTRAL COAST REGION PO BOX 56 81HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO CA 934n1i ND(5) 23 ND(5) 23 ND(5) 23 DMAX 100 = 0 DMAX100 = 0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 91 HIGUERA PO BOX 56 AVILA BEACH, CALIF 93424 SAN LUIS ORISPOp(A Q*uni PAGEACA 9 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATEECODE 3402003001 BEGINNING 02 / 01 / 01 NPDES PERMIT #

ENDING 02 01 / 31 6 CA0003751 STATION EFFLUENT 003 EFFLUENT 001NI EFFLUENT 001 EFF LUENT001 ANALYSIS SUSPENDED SOLIDS EFFLUENT 001 SETTL SOLIDS T CHROMIUM COPPER EFFLUENTOo0 UNITS mg/i1st FLTR mg/i 2nd FLTR mg/l NET NICKEL ol/l ug/l ZINC SMPLTYPE FRED.

1 II WEEKLY I

WHEN GRAB 001N &001P=>003 Ii~mm m~~m~

GRAB WEEKLY GRAB MONTHLY ug/1 GRAB MONTHLY ug/l GRAB MONTHLY ug/i GRAB MONTHLY I

2 3

4 5

6 7

I 11 II II N0(0.1)

I 8

9 ND(10) ND(I0) ND(lO) 10 ND(10)

ND(0.1) 11 12 13 14 15 16 ND(O.1) 17 18 19 20 21 22 23 24 ND(0.1) 25 26 27 28 29 30 31 II II III NTHLYAVG ONTHLY NO ND(0.1) ND(10) ND(10)

HIGH ND(10)

DISCHARGE ND(0.1) ND(10) NO N0(10)

ONTHLYLOW 1(10) ND(10) ND(10)

ND(0.1) ND(10) ND(10) ND(10) ND(10)

EXCEEDED IlMES NO LIMIT NO LIMIT MOAVG30=0 MOAVG1.0=0 6M-MED 10 =0 6M-MED 10 =0 rMES EXCEEDED 6M-MED 30 =0 6M-MED 70=0 DMAX100 = 0 DMAX3.0 = 0 DMAX40 = 0 DMAX50 D MAX 380 = 0 FIMES EXCEEDED o DMAX 100 = 0 IMAXl00=0 I MAX 140= 0 I IMAX100=0 IMAX14O=o zuv u I MAX 990 = 0 REMARKS: " NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81 HIGUERA PO BOX 56 AVILA BEACH, CALIF 93424 SAN Ills flRI5PA r'CA93401 n SANLUIS OBISPO AVILA BEACH, CALIF 93424 P E:() 1 FACILITY I.D. YEAR /MO /DAY STATE CODE 3 4OfIn~103WI YEAR/MO/DAY NPDF:* PPI*MIT ,Y 34.2u u3 ENDING 02 / 01 /31 S 6 .... CA000375C1 JII~~i STATION INFLUENT INFLUENT INFLUENT IINFLUENT ANALYSIS T CHROMIUM EFFLUENTO01 EFFLUENTO1O1) EFFLUENTOOIG COPPER NICKEL AM EFFLUENTOOIH UNITS IMONIA (N) AMMONIA (N) OIL&GREASE ug/l ug/1 ug/I OIL&GREASE OIL&GREASE ug/1 ugh night mg/i mg/I SMPLTYPE GRAB GRAB GRAB FRED.

GRAB GRAB GRAB JNAP/JUUOCT JANAP/JUUOCT JAAP/JUUOCT JNAfAP/JUL/OCT GRAB GRAB JAIAPIJUUOCT JAlAPIJUIJOCT JNAPIJUUOCT 1 JNAPIJUUOCT

.I .

I I II 2

3 < 3 4 3 2 7 5

6 7

8 9 ND(10) ND(IO) ND(10) ND(200) ND(200) 10 < 3 11 12

< 3 13 14 15 33 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTI HLY AVG ND(10) ND(10) ND(10) ND(200) ND(200)

• ONTIHLYHIGH 3 < 3 <

ND(10) ND(10) ND(10) 3 ND(200) ND(200) 7 < 3 < 3 MONTl HLYLOW ND(10) ND(10) ND(10) ND(200) ND(200)

< 3 < 3 < 3 ND(200)

TIMES EXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT 6M-MED 3060 = 0 rIMES EXCEEDED MO AVG 15 =0 MO AVG 15 = 0 IrMES EXCEEDED MO AVG 15 = 0 DMAX12240 = 0 DMAX20 = 0 DMAX20 = 0 DMAX20 = 0 MAX 30600 = 0 I CI REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

FLOW-WEIGHTED AVERAGE RESULT REPORTED.

PRINCIPAL EXECUTIVE OFFICER GREGORY M.RUEGER

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGIONPDBX5 81 HIGUERA PO BOX 56 SAN LUIS OBISPO, CA 93401 AVILA BEACH, CALF 93424 PAGE: (Q) 2 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE 3402003001 BEGINNING NPDES PERMIT #

02 / 01/ 01 ENDING 02 / 01 / 31 6 CA0003751 1 1 r CA0 STATION EFFLUENT 0011 EFFLUENT 001J EFFLUENT001K EFFLUENT O01L ANALYSIS EFFLUENT 001M EFFLUENT 001P EFFLUENT 002 OIL&GREASE OIL&GREASE OIL& GREASE OIL& GREASE EFFLUENT 003 UNITS OIL&GREASE OIL&GREASE OIL&GREASE mg/W mg/l mg/I mg/1 OIL&GREASE SMPLTYPE mg/1 mg/I mg/i GRAB GRAB GRAB GRAB mgr/

FREQ. GRAB GRAB GRAB JA/APIJUL/OCT JAAPIJUUOCT JA/AP/JUUOCT JAIAP/JUL/OCT JAVAPIJULIOCT GRAB JA'APIJUL/OCT JANAP/JUL/OCT I 1.1 mm*

r. III I JAIAP/JUL/OCT 1* -77 JAfAP/JUL/OCT 1 L-- m 2

3 4

I 5

6 I I I I I I 3 7

8 9 3 2< 3 3 2< 3 10 < 3 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 I

UONTHLY AVG NO NO NO < 3 < 3 < 3 ONTHLY HIGH DISCHARGE DISCHARGE < 3 <

DISCHARGE < 3 < 3 < 3 3 0ONTHLYLOW < 3 <

< 3 < 3 < 3 3

< 3 < 3 I

TIMESEXCEEDED MOAVG15=0 MOAVG15=0 MOAVG15=0 MOAVG15=0 MOAVG15=0 TIMESEXCEEDED MOAVG 15=0 MOAVG15=0 MOAVG15=0 DMAX20=0 DMAX20=0 DMAX20=0 DMAX20 = 0 DMAX20 = 0 DMAX20 = 0 DMAX20 = 0 IMESEXCEEDED DMAX20 = 0 I

REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

I CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

.... .. r r uNIUUIrJlUj-KIJ UI PACIFIC GAS AND ELECTRIC CO.

REGION DIABLO CANYON NUCLEAR POWER PLANT PO BOX56 CA 93401 AVILA BEACH, CALIF 93424 PAGE: (Q) 4 YEAR / MO / DAY YEAR / MO / DAY BEGINNING STATE CODE NPDES PERMIT 02 / 01 / 01 ENDING 02 / 01 / 31 6 CA0003751 EFFLUENT001D EFFLUENT 001H EFFLUENTOOIL EFFLUENT 001F EFFLUENT0010 EFFLUENT00OI EFFLUENT CHROMIUM T CHROMIUM TCHROMIUM T CHROMIUM COPPER COPPER I COPPER001 ug/ ug/l ug/1 ug/1 QTRLY COMP ug/ I ug/l ughl QTRLY COMP QTRLY COMP 1 WEEK COMP OTRLYCOMP JNAPIJUIJOCT JAtAp/jUUOCTJA/AP/JUIJOCT JNAP/JUUOCT QTRLY COMP I JANAP/JUIJOCT JAIAPIJUL/OCT OTRLY COMP JAcAPItlC.T REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

JCALIFORNIA ONTROL BOARDREGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 IZf I I1l CQDIe(*DCnnA n-4 AVILA BEACH, CALIF 93424 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

"MERCURYSAMPLE HOLDING TIMES EXCEEDED 28 DAY MAXIMUM. REFER TO COVER LETTER TEXT.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (Q) 6 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 /01 / 01 ENDING 02 / 01 / 31 6 CA0003751 STATION EFFLUENTOOD EFFLUENT001H EFFLUENT0011 EFFLUENTD01F EFFLUENT001D EFFLUENT001H EFFLUENT001L EFFLUENTD01F ANALYSIS NICKEL NICKEL NICKEL NICKEL SILVER SILVER UNITS ug/1 ug/1 ugh1 ugh1 ug/1 SILVER SILVER ug/1 ugh1 ug/1 SMPLTYPE OTRLY COMP QTRLY COMP QTRLY COMP I WEEK COMP QTRLY COMP QTRLY COMP OTRLY COMP I WEEK COMP FREO. JNAP/JULIOCT JNAP/JULIOCT JNAPIJULJOCT JMAP/JULJOCT JA/AP/JULIOCT JNAPIJUUIOCT JNAP/JUL/OCT JNAPIJULIOCT 2

3 4

5 6

7 8

9 20 2 20 2 ND(101 ND(10) ND(10) 2 ND(10) 2 ND(10) ND(10) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLY AVG 20 20 ND(10) ND(10) ND(10) ND(10) ND(10) ND(10)

MONTHLY HIGH 20 20 ND(10) ND(10) ND(10) ND(10) ND(10) ND(10)

MONTHLY LOW 20 20 ND(10) ND(10) ND(10) ND(10) ND(10) ND(10)

IMESEXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT IMES EXCEEDED IMES EXCEEDED REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT I CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO f.A Ql34l1 PAGE: (Q) 7 FACILITY I.D. YEAR/ MO / DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 01 1 01 ENDING 02 / 01/ 31 6 CA0003751 STATION EFFLUENT 001D EFFLUENT 0011H EFFLUENT 001L EFFLUENT 00IF ANALYSIS UNITS ZINC ZINC ZINC ZINC ug/1 ugh ug ug/1 SMPLTYPE QTRLY COMP OTRLY COMP QTRLY COMP 1WEEK COMP FREQ. JANAP/JUUOCTJNAP/JUUOCT J AP/JUL/OCT JNAPIJUUOCT 2

3 4

5 6

7 8

9 450 2 70 2 60 80 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

'I.

MONTHLYAVG 450 70 60 80 MONIHLYHIGH 450 70 80 80 MONTHLYLOW 450 60 40 80 TIMESEXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT TIMES EXCEEDED TIMES EXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 MO AVG 1 = 0 MOAVG1=0 MOAVG1=0 MOAVG 1 = 0 MOAVGI =0 DMAXI =0 DMAXI =0 DMAXI =0 DMAX1 =0 DMAX1 =0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 MOAVG =0 MOAVG1=O MOAVG1=0 MOAVG1=0 MOAVG 1=0 DMAX1 =0 DMAXI =0 DMAXI =0 DMAXI =0 DMAXI =0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT (CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 18HIGUERA PO BOX 56 AVILA BEACH, CALIF 93424

• AN LUIS OBISPO. CA 93401 A GE:(A) 1 PAGE: (A) I FACILITY I.D. YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 STATION BEGINNING 02 / 01 / 01 ENDING EFFLUENT 001 02 / 01 31 6 CA0003751 INFLUENT EFFLUENT INFLUENT EFFLUENT 001 INFLUENT EFFLUENT 001 INFLUENT ANALYSIS TITANIUM ARSENIC ARSENIC CADMIUM CADMIUM LEAD LEAD UNITS ug/l ug/ 1 ug /1 ugil ug / ugZ ZINC ug l ugu N 1 SMPLTYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREQ. OCTOBER OCTOBER OCTOBER GRAB OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 1

' I 2

3 4

II 5

6 I I

7 8

9 10 ND(10]

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 I

O0rHLYAVG ONT rHLY HIGH ND(10)

MONrHLY LOW ND(10)

ND(10)

TIMES EXCEEDED NO LIMIT NO LIMIT 6M-MED 30 = 0 NO LIMIT 6M-MED 10 =0 NO LIMIT 6M-MED 10 = 0 TIMESEXCEEDED D MAX150 = 0 NOLIMIT DMAX20 = 0 DMAX40 0 MESEXCEEDED I MAX 400 = 0 I MAX 50 -0 I MAX 100 =0 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

INFLUENT ANALYSIS PERFORMED FOR COMPARISON TO EFFLUENTS.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 ISANII I llq rI:IQPo (A OtAnl AVILA BEACH, CALIF 93424 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT ICONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 l81HIGUERA

-3ANK I I IInl 3RI[Cfl Pi'A 00-4 AVILA BEACH, CALIF 93424 MO AVG 15=0 MO AVG 15=0 MO AVG 15=0 MO AVG 15=0 MO AVG 15=0 DMAX 20=-0 DMAX 20=-0 DMAX 20=0 DMAX 20=0 DMAX20=0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

'CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A) 5 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 02 / 01 / 01 ENDING 02 / 01 / 31 6 CA0003751 STATION EFFLUENT001N EFFLUENT001N EFFLUENTO0IN EFFLUENT O01N EFFLUENT001N EFFLUENT 001N EFFLUENTOiN EFFLUENTOBIN ANALYSIS SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE UNITS MOISTURE TOT XJLDLN AMMONIA (N) NITRATE (N) TOTPHOSPHS pH OIL&GREASE BORON SMPL TYPE  % mg/kg mg/lkg mglkg mglkg pHunits mgAg mg/kg FRED. GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLY AVG MONTHLY HIGH MONTHLY LOW IMESEXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT MES EXCEEDED IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT ICENTRAL COAST REGION Po BOX 56 11HIGUERA ISAN LUIS OBISPn C.A M .Mn AVILA BEACH, CALIF 93424 1OxSTLC=O IOxSTLC=O IOxSTLC=O IOxSTLC=O 10xSTLC=O 10 mg/kg=0 250 mg/kg=0 50 rmg/kg=0 50 mg/lg=0 200 mg/kg=0 TTLC>100=0 TTLC>2500=0 TTLC>500=0 TTLC>1000=0 TTLC>2000=0 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

APPENDIX 3 DIABLO CANYON POWER PLANT Influent and Effluent Monitoring February 2002

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 1 FACILITY I.D. YEAR / MO / DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 02 /01 ENDING 02 / 02 /28 06 CA0003751 STATION INFLUENT EFFLUENT001 DELTA TEMP EFFLUENT 001 INFLUENT EFFLUENTO00 EFFLUENT 00IP EFFLUENT 002 ANALYSIS TEMPERATURE TEMPERATURE TEMPERATURE FLOW pH pH pH pH UNITS DEGREES F DEGREES F DEGREES F MGD pH UNITS pH UNITS pHUNITS pH UNITS SMPL TYPE METERED METERED METERED RECORDED GRAB GRAB GRAB GRAB FREQ. CONTINUOUS CONTINUOUS CONTINUOUS DAILY MONTHLY MONTHLY (** MONTHLY MONTHLY 1 52.4 71.9 19.5 2486 2 52.3 71.7 19.4 2486 3 52.3 71.7 19.4 2486 4 52.4 71.8 19.4 2486 5 52.3 71.7 19.4 2486 6 52.3 71.6 19.3 2486 8.0 8.0 7 52.3 71.5 19.2 2486 8 52.6 71.9 19.3 2486 9 52.3 67.2 14.9 2018 10 52.9 69.1 16.2 1862 11 52.9 71.9 19.0 2174 12 53.2 72.3 19.1 2486 13 53.5 72.7 19.2 2486 14 53.5 71.1 17.6 2486 15 53.5 67.1 13.6 2486 16 53.8 73.0 19.2 2486 17 54.5 73.8 19.3 2486 18 54.3 73.7 19.4 2486 19 54.1 73.4 19.3 2486 20 53.6 73.0 19.4 2486 7.8 2 8.0 21 53.9 73.1 19.2 2486 22 54.9 74.0 19.1 2486 23 54.1 73.3 19.2 2486 24 52.7 72.1 19.4 2486 25 53.8 72.9 19.1 2486 26 54.6 73.8 19.2 2486 27 54.5 73.6 19.1 2486 28 54.7 73.9 19.2 2486 29 30 31 ONTHLY AVG 53.4 72.1 18.7 2436 8.0 8.0 7.8 8.0 ONTHLY HIGH 54.9 74.0 19.5 2486 8.0 8.0 7.8 8.0 MONTHLYLOW 52.3 67.1 13.6 1862 8.0 8.0 7.8 8.0 IMES EXCEEDED NO LIMIT NO LIMIT MAX 22 = 0 MAX 2760 = 0 NO LIMIT NO LIMIT NO LIMIT NO LIMIT MESEXCEEDED (**)

IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

EXCEPT DURING DEMUSSELING.

DAILY WHEN DISCHARGING CHEMICAL CLEANING WASTES FROM DISCHARGES 001D, F, I, L,AND/OR M.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION 81 HIGUERA PO BOX 56 SAN LUIS OBISPO. CA 93401 AVILA BEACH, CALIF 93424 PAGE: (M) 2 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 02 / 01 ENDING 02 / 02 / 28 06 r _____

STATION EFFLUENT 003 EFFLUENT004 EFFLUENT O0IN EFFLUENT 001P EFFLUENT 003 EFFLUENT 001F EFFLUENT 001 ANALYSIS pH pH OIL&GREASE EFFLUENT 001 OIL&GREASE OIL&GREASE OIL&GREASE TCHLOR RES I

UNITS pH UNITS pH UNITS MgA CHLORINE USED mgf mg, m9A SMPL TYPE GRAB GRAB COMPOSITE ugA lbs/day GRAB GRAB GRAB FRED. MONTHLY MONTHLY GRAB RECORDED WEEKLY WEEKLY (1 WEEKLY (-I MONTHLY 2 per CYCLE MONTHLY

.1 I - - I

-- ram

-I. I I I I I I-I I

• I 1.-I----

I I w m 3

2 ND(5)

ND(5) 10 42 343 3 10 46 341 4 10 50 346 3 10 le 5 42 350 10 38 326 6 I I 11 I ND(5) 10 38 7 329 3 ND(5) 10 41 336 8

10 41 346 9

5 43 146 10 10 43 254 11 10 32 295 12 ND(5) 10 29 338 13 3 ND(5) 10 29 14 346 10 41 365 15 10 45 360 16 10 26 350 17 10 24 350 18 10 24 350 19 10 26 350 20 8.0 3 < 10 29 355 21 5 10 42 22 360 10 24 370 23 10 26 379 24 10 38 379 25 10 35 379 26 10 32 382 27 10 34 403 28 10 42 422 29 30 31 IMONTHLY IAONTHLY

'IONTHLY AVG HIGH LOW TIMESEXCEEDED TIMESEXCEEDED TIMESEXCEEDED 8.0 8.0 8.0 NO LIMIT 8.0 8.0 8.0 NO LIMIT

< 5 5

ND(5)

MO AVG 15 = 0 DMAX20=0 NO DISCHARGE MO AVG 15 = 0 DMAX20=0 NO DISCHARGE MOAVG 15=0 DMAX20=0 3

3 3

MOAVG15=0 DMAX20=0 36 50 24 IMAX 200= 0 345 422 146 NO LIMIT I

REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

"WHEN 001N IS DISCHARGING TO 001P.

WHEN 001 P IS DISCHARGING TO 003.

SCALIFORNIAREGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD jCENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT I1HIGUERA PO BOX 56 8SAN LUIS OBISPO. CA 934m1 AVILA BEACH, CALIF 93424 14 77 ND(5)

DMAX 100= 0 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

"FLOW-WEIGHTED AVERAGES REPORTED.

PRINCIPAL EXECUTIVE OFFICER GREGORY M.RUEGER

ul0krUtENDtI-MUNI I U REPURT 0ING PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT P0 BOX 56 AVILA BEACH, CALIF 93424 PAGE: (M)4 DAY YEAR / MO, I DAY STATE CODE NPIDES PERMIT 1/1 ENDING 02 /102 I28 06l CA"03751 S EFFLUENT OOIH SUSPENDED SOLIDS mgil NET mg/11stFLTR mg/I2nd FLTR mg/1 NET GRAS MONTHLY 1 < ND(5)

ND(5)

ND(5)

ND(5)

ND(5)

ND(5) ND(5)

ND(S)

MO AVG 30=0 NO LIMIT NO LIMIT MO AVG 30=0 DMAX100= 0 DMAX 100= 0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

REGIONAL WATER QUALITY TCALIFORNIA DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL 1 BOARD CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 SAN LUIS OBISPO. CA 93401 AVILA BEACH, CALIF 93424 NO ND(5)

DISCHARGE ND(5)

ND(5)

MAX 100 = 0 MAX 100 = 0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

VISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 PAGE: (M) 6 DAY YEAR / MO / DAY STATE CODE NPDES PERMIT 1 01 ENDING 02 / 02 / 28 06 CA0003751 EFFLUENT 001L S SUSPENDED SOLIDS mg/INET mnI 1st FLTR mrg/2nd FLTR mgI NET GRAB MONTHLY 2 < 1 2 ND(5)

NO ND(5)

DISCHARGE ND(5)

ND(S)

MOAVG30=0 NO LIMIT NO LIMIT MOAVG30=0 DMAX 100 = 0 DMAX100 = 0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 ISAN I I l.qOrI.QPfl c, 1A*n4 AVILA BEACH, CALIF 93424 PAGE: (M) 7 STATE CODE NPDFS PFRMIT:

16 5 NO 6 DISCHARGE 9 ND(5)

DMAX 100 = 0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

GREGORY M.RUEGER PRINCIPAL EXECUTIVE OFFICER

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 11 10 22 20 ND(5) ND(5)

ND(5)

ND(5)

ND(5)

ND(5)

DMAX 100 = 0 DMAX 10o = 0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

I GREGORY M.RUEGER PRINCIPAL EXECUTIVE OFFICER

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 MOAVG 30 = 0 MO AVG 1.0 = 0 6M-MED 10 =0 6M-MED 10 =0 6M-MED DMAX100 = 0 DMAX3.0 = 0 30 =0 DMAX40 = 0 DMAX50 = 6M-MED 70=0 IMAX100=0 IMAX 14=0 DMAX120 = 0 IMAX26O=0 DMAX380 = 0 IMAXgg0=0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFICER GREGORY M.RUEGER I

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 6M-MED 3060 = 0 MO AVG 15=0 DMAX12240 = 0 DMAX20 = 0 I MAX 30600 = 0 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

FLOW-WEIGHTED AVERAGE RESULT REPORTED.

I PRINCIPAL EXECUTIVE OFFICER GREGORY M.RUEGER

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC CANYON DIABLO GAS ANDNUCLEAR ELECTRICPOWER CO. PLANT CENTRAL COAST REGION 81 HIGUERA PO BOX 56 AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: ({) 2 FACILITY I.D. YEAR/ MO I DAY YEAR / MO / DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 02 1 02 / 01 ENDING 02 / 02 / 28 06 CA0003751 STATION EFFLUENT0011 EFFLUENTOO1J EFFLUENT001K EFFLUENT 001L EFFLUENT 00IM EFFLUENT 001P EFFLUENT 002 EFFLUENT 003 ANALYSIS OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE UNITS mg/i mg/i mg/I mg/I mg/I SMPL TYPE mg/I mg/l mg/I GRAB GRAB GRAB GRAB GRAB FREQ. GRAB GRAB GRAB JNAP/JUL/OCT JNAP/JUIJOCT JAIAP/JUL/OCT JAIAPIJUL/OCT JAJAPIJUL/OCT JNAP/JUL/OCT JNAPIJULOCT JNAP/JUUOCT 2

3 4

5 6

7 8

9 < 3 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLYAVG < 3 MONTHLYHIGH < 3 MONTHLYLOW < 3 IMESEXCEEDED MOAVG 15 0 MOAVG 15= 0 MOAVG15=0 MOAVG15=0 MOAVG 15 =0 MOAVG 15=0 MOAVG 15= 0 MOAVG 15 = 0 IMESEXCEEDED DMAX 20 = 0 D MAX 20 = 0 DMAX20 = 0 D MAX 20 = 0 D MAX 20 = 0 DMAX 20 = 0 DMAX 20 = 0 D MAX 20 = 0 IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION P0 BOX 56 81 HIGUERA AL BEC C 9 SAN LUIS OBISPO. CA 93401 AVILA BEACH, CALIF 93424 PAGE: (Q) 3 FACILITY I.D. YEAR / MO I DAY YEAR i MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 02 / 01 ENDING 02 / 02 / 28 06 CA0003751 STATION EFFLUENT 004 EFFLUENT 001 EFFLUENT0011DEFFLUENT 001H EFFLUENT0011L EFFLUENT001F ANALYSIS OIL&GREASE TOXCONCEN CADMIUM CADMIUM CADMIUM CADMIUM UNITS mg/1 TU ug/h ugh ugh/ ug/h SMPL TYPE GRAB GRAB QTRLY COMP QTRLYCOMP QTRLYCOMP 1WEEK COMP FREQ. JNAPIJULJOCT JNAPIJULIOCT JAJAPNJUIJOCT JNAP/JULICT JAJAP/JULIOCT JAJAP/JUUOCT 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ONTHLY AVG ONTHLY HIGH ONTHLY LOW IMESEXCEEDED MO AVG 15 0 NO LIMIT NO LIMIT NO LIMIT NO LIMIT IMESEXCEEDED D MAX 20 = 0 IMESEXCEEDED 6M-MED 0.26=0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT JCONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION 81HIGUERA PO BOX 56 qAN I IJIS flRISPn (.A Q"Anl AVILA BEACH, CALIF 93424 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT ICONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION 81HIGUERA PO BOX 56 RAN I II (IRIqPPM O A QUAM AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 MO AVG 1 = 0 MOAVG 1 = 0 MO AVG I = 0 MO AVG 1 = 0 MOAVG I =0 DMAXl =0 DMAXI =0 DMAX1 =0 DMAX1 =0 DMAX1 =0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 MOAVGI=0 MOAVG1=0 MOAVG1=0 MOAVGI=0 MOAVG 1=0 DMAX1 =0 DMAXI =0 DMAX1 =0 DMAXI =0 DMAXI =0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPALEXECUTIVEOFFICER GREGORY M.RUEGER I

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A)

I FACILITY I.D. YEAR/MO/DAY YEAR / MO / DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 02/ 02 /01 ENDING 02 / 02 /28 06 CA0003751 STATION EFFLUENT001 INFLUENT EFFLUENT INFLUENT EFFLUENT001 INFLUENT EFFLUENT 001 INFLUENT ANALYSIS TITANIUM ARSENIC ARSENIC CADMIUM CADMIUM LEAD LEAD ZINC UNITS uglI ug/l ug/t ug/1 ug/l ug/1 ug/i ug/1 SMPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREQ. OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 ND(10) 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLY AVG MONTHLY HIGH MONTHLY LOW ND(10)

ND(10)

IMESEXCEEDED NO LIMIT NO LIMIT 6M-MED 30 = 0 NO LIMIT 6M-MED 10 = 0 NO LIMIT 6M-MED 10 0 NO LIMIT IMESEXCEEDED DMAX150 = 0 DMAX20 = 0 DMAX40 = 0 IMESEXCEEDED I MAX 400 = 0 I MAX 50- 0 I MAX 100 =0 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

- INFLUENT ANALYSIS PERFORMED FOR COMPARISON TO EFFLUENTS.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT ICONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81HIGUERA II II1 nflQ~irN (A OlAni CZAM~ AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION 932 81 HIGUERA PO BOX 56ACH CALIF ACIA SAN LUIS OBISPO. CA 93401 AVILA BEACH, CALIF 93424 PAGE: (A) 4 FACILITY ID. YEAR I MO / DAY YEAR,/ MO DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 02 / 02 / 01 ENDING /02 /28 06 CA0003751 STATION EFFLUENT009 EFFLUENT 013 EFFLUENT 015 EFFLUENT 016 EFFLUENT 017 INFLUENT EFFLUENT001 ANALYSIS OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE PCB'S PCB'S UNITS mg/1 mg/i mg/l mg/1 mg/1 ug/1 ug/l SMPLTYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREQ. OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLY AVG ONTHLYHIGH ONTHLYLOW IMESEXCEEDED MO AVG 15=0 MO AVG 15=0 MO AVG 15=0 MO AVG 15-0 MO AVG 15=0 NO LIMIT MES EXCEEDED NO LIMIT DMAX 20=0 DMAX 20=0 DMAX 20=0 DMAX 20=0 DMAX20=0 TIMESEXCEEDED I

REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

I GREGORY PRINCIPAL M.RUEGER EXECUTIVE OFFICER

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT BOARD PACIFIC GAS AND ELECTRIC CO.

CCONTROL DIABLO CANYON NUCLEAR POWER PLANT I CENTRAL COAST REGION 81HIGUERA PO BOX 56 I SAN LUIS OBISPO. CA QUMfl AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFICER I GREGORY M.RUEGER I

APPENDIX 4 DIABLO CANYON POWER PLANT Influent and Effluent Monitoring March 2002

CALIFORNIA REGIONAL WATER QUAUTY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 1 FACILITY I.D. YEAR / MO / DAY YEAR/MO/DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 03 /01 ENDING 02 / 03 /31 06 CA0003751 STATION INFLUENT EFFLUENT 001 DELTATEMP EFFLUENT 001 INFLUENT EFFLUENT 001 EFFLUENT 001P EFFLUENT 002 ANALYSIS TEMPERATURE TEMPERATURE TEMPERATURE FLOW pH pH pH pH UNITS DEGREES F DEGREES F DEGREES F MGD pHUNITS pH UNITS pH UNITS pHUNITS SMPL TYPE METERED METERED METERED RECORDED GRAB GRAB GRAB GRAB FREQ. CONTINUOUS CONTINUOUS CONTINUOUS DALLY MONTHLY MONTHLY [*) MONTHLY MONTHLY 1 54,7 73.8 19.1 2486 2 551 74.2 19.1 2486 3 55.4 74.6 19.2 2486 4 55.5 74.8 19.3 2486 5 54.9 74.2 19.3 2486 6 55.2 74.5 19.3 2486 7 55.4 74.8 19.4 2486 8 54.4 74.0 19.6 2486 9 54.1 73.7 19.6 2486 10 54.5 74.0 19.5 2486 11 53.8 73.2 19.4 2486 12 52.5 720 19.5 2486 13 51.8 71.4 19.6 2486 14 50.7 70.4 19.7 2486 15 51.1 70.9 19.8 2486 8.0 16 50.0 69.8 19.8 2486 17 50.0 69.8 19.8 2486 18 49.7 69.6 19.9 2486 19 50.1 69.8 19.7 2486 3 8.0 20 50.9 70.5 19.6 2486 8.0 8.0 21 51.0 70.5 19.5 2486 22 52.0 71.6 19.6 2486 23 52.4 72.0 19.6 2486 24 51.1 70.8 19.7 2486 25 50.2 69.8 19.6 2486 26 50.8 70.4 19.6 2486 27 51.1 70.7 19.6 2486 28 51.5 71.1 19.6 2486 29 52.1 71.8 19.7 2486 30 52.6 72.2 19.6 2486 31 52.5 72.0 19.5 2486 MONTHLY AVG 52.5 72.0 19.5 2486 8,0 8.0 8.0 8.0 MONTHLY HIGH 55.5 74.8 19.9 2486 8,0 8.0 8.0 8.0 MONTHLY LOW 49.7 69.6 19.1 2486 8.0 8.0 8.0 8.0 TIMESEXCEEDED NO LIMIT NO LIMIT MAX 22 =0 MAX 2760 = 0 NO LIMIT NO LIMIT NO LIMIT NO LIMIT TIMESEXCEEDED C")

TIMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

"EXCEPT DURING DEMUSSELING.

- DAILY WHEN DISCHARGING CHEMICAL CLEANING WASTES FROM DISCHARGES 001D, F, I, L,AND/OR M.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION 81 HIGUERA PO BOX 56 AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 2 FACILITY I.D. YEAR / MO I DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 03 / 01 ENDING 02 / 03 / 31 06 CA0003751 STATION EFFLUENT 003 EFFLUENT 004 EFFLUENT001N EFFLUENT001P EFFLUENT003 EFFLUENT001F EFFLUENT 001 EFFLUENT 001 ANALYSIS pH pH OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE TCHLOR RES CHLORINE USED UNITS pH UNITS pHUNITS mgp mrh SMPLTYPE mh mgp ughA lbs/day GRAB GRAB COMPOSITE GRAB GRAB FRED. GRAB GRAB RECORDED MONTHLY MONTHLY WEEKLY WEEKLY () WEEKLY *) MONTHLY 2 per CYCLE MONTHLY 1 3 < 5 10 42 430 I 23 10 41 446 4 10 26 446 5 10 16 418 6

10 18 403 10 15 382 3 <

10 16 353 810 24 346 90 10 22 346 11 10 15 346 12 10 16 346 10 20 331 13 3 ND(5) 10 26 324 145 10 42 341 16 10 50 336 17 10 46 331 18 10 50 331 19 8.0 8.0 10 50 331

< 3 10 50 331 20 10 50 312 21 3 ND(5) 10 46 295 223 10 42 281 24 10 38 274 10 42 274 25 3 ND(5) 10 38 274 267 10 42 271 28 10 42 264 29 10 46 269 30 10 46 283 31 10 38 283 10 38 283 MONTHLY AVG 8.0 8.0 < 5 NO NO < 3 35 332 MONTHLYHIGH 8.0 8.0 6 DISCHARGE DISCHARGE < 3 50 446 IONTHLYLOW 8.0 8.0 ND(5) < 3 15 264 IMES EXCEEDED NO LIMIT NO LIMIT MO AVG 15 0 MO AVG 15 = 0 MO AVG 15 = 0 MO AVG 15 = 0 I MAX 200 0 NO LIMIT IMES EXCEEDED D MAX 20 = 0 DMAX 20 = 0 D MAX 20 = 0 D MAX 20 = 0 IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

"WHEN 001N IS DISCHARGING TO 001 P.

WHEN 001P IS DISCHARGING TO 003,

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 3 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 03 / 01 ENDING 02 / 03 / 31 06 CA0003751 STATION EFF 001N=>003 EFF 001N=>003 EFFLUENTOOID EFFLUENT001F ANALYSIS TOTL COLIFORM FECAL COLIFORM SUSPENDED SOLIDS SUSPENDED SOLIDS UNITS MPN/OOrnm MPN/100rnd mg/l 1st FLTR mg/l 2nd FLTR mg/INET mg/l 1st FLTR mg/i 2nd FLTR mg/i NET SMPLTYPE GRAB GRAB GRAB GRAB FREQ. 4 TIMES/WEEK 4 TIMES/WEEK MONTHLY MONTHLY 1 14 14 2

3 4

5 6

7 < 1 ND(5) 8 9

10 11 16 16 12 13 14 15 16 17 18 19 2 6 2 2 2 ND(5) 20 21 22 23 24 25 26 18 18 27 28 5 5 29 30 31 MONTHLY AVG NO NO - < 5 ND(5)

MONTHLY HIGH DISCHARGE DISCHARGE 18 ND(5)

MONTHLY LOW ND(5) ND(5)

IMESEXCEEDED 80% SMPLS>IK MEAN>200 = NO LIMIT NO LIMIT MO AVG 30 = 0 NO LIMIT NO LIMIT MO AVG 30 = 0 MESEXCEEDED 90 % SMPLS>400 D MAX 100 = 0 D MAX 100 = 0 IMES EXCEEDED I MAX >IOK REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

SFLOW-WEIGHTED AVERAGES REPORTED.

I1 ICALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

1CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 181 HIGUERA AVILA BEACH, CALIF 93424 ISANLUIS OBISPO. CA 93401 ND(5)

ND(5) ND(5)

ND(5) ND(5)

ND(5) ND(5)

DMAX 100= 0 DMAX100= 0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PC BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 5 FACILITY I.D. YEAR / MO / DAY YEAR/MO/DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 03 1 01 ENDING 02 1 03 /31 06 CA0003751 STATION EFFLUENT 0011 EFFLUENT 001J ANALYSIS SUSPENDED SOLIDS SUSPENDED SOLIDS UNITS mg/1Ist FLTR mg/12nd FLTR mg/INET mg/I istFLTR mg/I2nd FLTR mg/i NET SMPL TYPE GRAB GRAB FRED. MONTHLY MONTHLY 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLY AVG NO NO MONTHLY HIGH DISCHARGE DISCHARGE MONTHLY LOW

'IMESEXCEEDED NO LIMIT NO LIMIT MO AVG 30= 0 NO LIMIT NO LIMIT MO AVG 30 =0 IMESEXCEEDED MAX 100 = 0 MAX 100 = 0 IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT CONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 6 FACILITY I.D. YEAR ) MO I DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 1 03 / 01 ENDING 02 / 03 I 31 06 CA0003751 STATION EFFLUENT 001K EFFLUENT 001L ANALYSIS SUSPENDED SOLIDS SUSPENDED SOLIDS UNITS mg/i 1st FLTR mg/l2nd FLTR mg/i NET mg/I1st FLTR mg/i 2nd FLTR mg/i NET SMPL TYPE GRAB GRAB FREO. MONTHLY MONTHLY 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 2 < 2 ND(5) 20 21 22 23 24 25 26 27 28 29 30 31 ONTHLY AVG NO ND(5)

ONTHLY HIGH DISCHARGE ND(5)

ONTHLY LOW ND(5)

IMESEXCEEDED NO LIMIT NO LIMIT MO AVG 30 = 0 NO LIMIT NO LIMIT MO AVG 30 = 0 IMESEXCEEDED D MAX 100 = 0 DMAX 100 = 0 IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

UIti.;tAf<(bE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 PAGE: (M) 7

)AY YEAR / MO / DAY STATE CODE NPDES PERMIT

/ 01 ENDING 02 / 03 / 31 06 CA0003751 EFFLUENT 0OIN EFFLUENT 001P SUSPENDED SLDS SUSPENDED SOLIDS mg/iNET mg/I mg/fIIst FLTR mg/i2nd FLTR mg/I NET COMPOSITE GRAB WEEKLY MONTHLY 15 15 12 14 13 ND(5) 5 5

19 19 10 ND(5) 19 15 ND(5) 19 5 ND(5)

MO AVG 30 = 0 MO AVG 60 =0 NO LIMIT NO LIMIT MO AVG 30 = 0 DMAX100 = 0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

.LIot,nmrNt OtL-" MUNII UNINIJ REPURT PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 1401 AVILA BEACH, CALIF 93424 PAGE: (M) 8 YEAR / MO/DAY YEAR I MO / DAY STATE CODE NPDES PERMIT BEGINNING 02 / 03 1 01 ENDING 02 / 03 / 31 06 CA0003751 EFFLUENT 002 EFFLUENT 003 SUSPENDED SOLIDS SUSPENDED SOLIDS 1st FLTR mg/I 2nd FLTR mg/iNET mg/IIst FLTR mg/I2nd FLTR mg/INET GRAB GRAB MONTHLY MONTHLY 9 2 9 2 ND(5) 2 11 2 10 2 ND(5)

ND(5) ND(5)

ND(5) ND(5)

ND(5) ND(5)

MIT NO LIMIT MO AVG 30 = 0 NO LIMIT NO LIMIT MO AVG 30 = 0 DMAX 100 = 0 DMAX100 = 0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE:

(M) 9 FACILITY ID. YEAR/MO/DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 02 / 03 / 01 ENDING 02 / 03 / 31 06 CA0003751 STATION EFFLUENT 003 EFFLUENT001N EFFLUENT 001 EFFLUENT 001 EFFLUENT ANALYSIS SUSPENDED SOLIDS 00 EFFLUENT 001 SETnL SOLIDS T CHROMIUM COPPER NICKEL UNITS mg/I IstFLTR mg/i 2nd FLTR mg/INET ZINC ml/I ug/1 ugll ug91 SMPL TYPE GRAB ug/n GRAB GRAB GRAB GRAB FRED. WEEKLY WHEN 001N&001P =>003 GRAB WEEKLY MONTHLY MONTHLY MONTHLY MONTHLY ND(0.1) 2 3

4 5

6 7

ND(0.1) 8 9

10 11 12 13 ND(O.1) 14 15 16 17 18 19 20 ND(10) ND(10) ND(10) ND(10) 21 ND(0.1) 22 23 24 25 ND(0.1) 26 27 28 29 30 31 I

ONTHLYAVG NO ND(O.1) ND(10) ND(10)

ONTHLY HIGH ND(10) ND(10)

DISCHARGE ND(0.1) ND(10) ND(10) ND(10) ND(10)

MONTHLY LOW ND(1O)

ND(0.1) ND(10) NO(10)

I ND(10) rTIMESEXCEEDED NO LIMIT NO LIMIT ND(10) NOf 10)

MO AVG 30 = 0 MO AVG 1.0 = 0 6M-MED 10=0 6M-MED 10 =0 TIMESEXCEEDED 6M-MED DWMMAX 30-=0 6M.-MED 70=0 DMAX100 = 0 DMAX3.0 = 0 100 =0 D MAX40 = 0 D MAX50 = 0 D MAX380 =

TIMESEXCEEDED 0 IMAX 100 0 1IMAX 140= 0 IMAX260=0 IMAX990=0 I MAX 140 = 0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

ICAUFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

C.ONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT C.ENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (Q) I FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 03 1 01 ENDING 02 / 03 /31 06 CA0003751 STATION INFLUENT INFLUENT INFLUENT INFLUENT EFFLUENT 001 EFFLUENT001D EFFLUENTOIG EFFLUENT001H ANALYSIS T CHROMIUM COPPER NICKEL AMMONIA (N) AMMONIA IN) OIL&GREASE OIL&GREASE OIL&GREASE UNITS ugll ug/l ugh ug/I ug/1 mg/J SMPL TYPE mg/I mg/I GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREQ. JNAP/JUUOCT JAAPIJULIOCT JNAP/JUL/OCT JNAPIJUL/OCT JAIAP/JULiOCT JNAPlJULIOCT JAIAPIJUIJOCT JNAP/JUIJOCT 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 ND(10) ND(10) ND(10) 21 22 23 24 25 26 < 3 27 28 29 4 30 31 MONTHLY AVG ND(10) ND(10) ND(10) - < 3 MONTHLY HIGH ND(10) ND(10) ND(10) 4 MONTHLY LOW ND(10) ND(10) ND(10) < 3 IMESEXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT 6M-MED 3060 = 0 MO AVG 15=0 MO AVG 15 =0 MO AVG 15 0 IMESEXCEEDED DMAX12240 = 0 DMAX20 = 0 DMAX20 = 0 DMAX20 = 0 IMESEXCEEDED I MAX 30600 = 0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

"FLOW-WEIGHTED AVERAGE RESULT REPORTED.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT ICONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81 HIGUERA PO BOX 56 IS,,,AN LIMSnRIP) rA QlA,* AVILA BEACH, CALIF 93424 3

3 3

MOAVG15=0 MOAVG15=0 MOAVG 15=0 MOAVG15=0 MOAVG15=0 MOAVG 15=0 DMAX20 = 0 DMAX20 = 0 DMAX20 = 0 MOAVG15=0 MOAVG15=0 DMAX20 = 0 DMAX20 = 0 DMAX20 = 0 DMAX20 = 0 DMAX20 = o REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT JCONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81 HIGUERA PO BOX 56 IS;ANLUIS OBISPO. CA 9.4l1 AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFICER GREGORY M.RUEGER

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

I PRINCIPAL EXECUTIVE OFFICER j I GREGORY M.RUEGER I

CAUFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (Q) 5 FACILITY I.D. YEAR I MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 1 03 / 01 ENDING 02 / 03 1 31 06 CA0003751 STATION EFFLUENT 001D EFFLUENT 001H EFFLUENT O0IL EFFLUENT OIF EFFLUENT 001D EFFLUENT 001H EFFLUENT 001 L EFFLUENT 001F ANALYSIS LEAD LEAD LEAD LEAD MERCURY MERCURY MERCURY MERCURY UNITS ug 1 ug 1 ugh1 ug/1 ug/1 Ug91 ughl ugw1 SMPL TYPE QTRLY COMP QTRLY COMP QTRLY COMP 1WEEK COMP QTRLYCOMP OTRLY COMP QTRLY COMP I WEEKCOMP FREQ. JAIAP/JUUOCT JAJAP(JULIOCT JAIAP1JUL/OCT JN6AP/JUUOCT JNAPIJUUUOCT JNAPIJUUOCT JNAAPJUUUOCT JNAP/JUUIOCT 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLYAVG MONTHLY HIGH MONTHLY LOW TIMESEXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT IMES EXCEEDED IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT P0 BOX 56 81HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE:

(Q) 6 FACILITY I.D. YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINING 02 / 03 / 01 ENDING 02 / 03 / 31 06 CA0003751 STATION EFFLUENT001D EFFLUENT001H EFFLUENT001L EFFLUENT001F EFFLUENTOO1D EFFLUENT001H EFFLUENT001L EFFLUENT001F ANALYSIS NICKEL NICKEL NICKEL NICKEL SILVER SILVER SILVER SILVER UNITS ug/1 ug/ ug/1 ug91 ug/h SMPLTYPE uglI ug/1 ug/h QTRLY COMP QTRLY COMP QTRLY COMP 1WEEK COMP QTRLYCOMP QTRLY COMP OTRLY COMP I WEEKCOMP FREO. JNAPlJULIOCT JNAPJJULOCT JNAPIJUIJOCT JNAP/JUUOCT JNAP/JULJOCT JNAPIJUUOCT JNAPIJUL/OCT JANAP/JUIJOCT 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLYAVG MONTHLY HIGH MONTHLYLOW IMESEXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT IMESEXCEEDED IMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

C.IALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

PLANT CENTRAL COAST REGION CANYON NUCLEAR POWER PO BOX 56 81 HIGUERA 1(' ONROLBARDDIABLO C AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 (Q)7 PAGE:

FACIUTY I.D. YEAR/ MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 03 / 01 ENDING 02 / 03 / 31 06 CA0003751 STATION EFFLUENT001D EFFLUENTO01H EFFLUENT O01L EFFLUENTD01F ANALYSIS ZINC ZINC ZINC ZINC UNITS ug/1 ugvt ug/l ugh SMPLTYPE OTRLY COMP QTRLY COMP QTRLY COMP 1WEEK COMP FREQ. JANAPIJUUOCTJNAP/JUL/OCT JNAP/JULIOCT JAIAP/JUIJOCT 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ONTHLY AVG ONTHLY HIGH IONTHLY LOW TMES EXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT IMESEXCEEDED IMESEXCEEDED REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA H REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT I ONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

REGION DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST 81 HIGUERA PO BOX 56 81SANLUIS OBISPO. CA 93401 AVILA BEACH, CALIF 93424 MOAVG1=0 MOAVG1=0 MOAVG1=0 MOAVGI=0 MOAVG I=0 DMAXI =0 DMAX1 =0 DMAX1 =0 DMAXI =0 DMAX1 =0 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT ICONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 S.ANLUIS OBISP" fA **Qdnl AVILA BEACH, CALIF 93424 MOAVG1=0 MOAVG 1=0 MOAVGI=0 MOAVGI=0 MOAVGI=0 DMAX1 =0 DMAX1 =0 DMAX1 =0 DMAX1 =0 DMAXI =0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO 8OX 56 AVILA BEACH, CALIF 93424 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

INFLUENT ANALYSIS PERFORMED FOR COMPARISON TO EFFLUENTS.

PACIFIC GAS AND ELECTRIC CO.

DIABLO CANYON NUCLEAR POWER PLANT PO BOX 56 AVILA BEACH, CALIF 93424 REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT ICONTROL BOARD PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 I ISjiO)PISprArA QlAni IS,-AN AVILA BEACH, CALIF 93424 REMARKS: " NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (A) 4 FACILITY I.D. YEAR I MO I DAY YEAR /MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 02 / 03 1 01 ENDING 02 / 03 131 06 CA0003751 STATION EFFLUENT 009 EFFLUENT013 EFFLUENT015 EFFLUENTO01 EFFLUENT 017 INFLUENT EFFLUENT 001 ANALYSIS OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE OIL&GREASE PCB'S PCBS UNITS mg/I mg/I mg/I mg/I mg/I ug/l ug/1 SMPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAB FRED. OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLY AVG MONTHLY HIGH MONTHLY LOW "TIMESEXCEEDED MOAVG 15=0 MO AVG 15=0 MO AVG i5=0 MO AVG 15=0 MO AVG 15=0 NO LIMIT NO LIMIT TIMES EXCEEDED DMAX 20=0 DMAX 20=0 DMAX 20=0 DMAX 20=0 DMAX20=0 "TIMESEXCEEDED REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER QUALITY ICONTROL BOARD DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CENTRAL COAST REGION DIABLO CANYON NUCLEAR POWER PLANT 81HIGUERA PO BOX 56 "lqSAN I Ill I.q nPin r' 01QAnl AVILA BEACH, CALIF 93424 REMARKS: . NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFICER j GREGORY M.RUEGER I

CALIFORNIA REGIONAL WATER QUALITY DISCHARGE SELF MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (A) 6 FACILITY I.D. YEAR / MO I DAY YEAR I MO I DAY STATE CODE NPOES PERMIT #

3402003001 BEGINNING 02 / 03/ 01 ENDING 02 103 / 31 06 CA0003751 STATION EFFLUENTO0IN EFFLUENT001N EFFLUENT001N EFFLUENT001N EFFLUENT 00IN EFFLUENTOIN EFFLUENT001N EFFLUENT001N ANALYSIS SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE UNITS CADMIUM COPPER CHROMIUM LEAD NICKEL MERCURY ZINC VOLUME SMPLTYPE mg/kg mg/g mg/kg mgpkg mg/kg mg/kg mg/kg tons FREQ. GRAB GRAB GRAB GRAB GRAB GRAB GRAB OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLY AVG MONTHLY HIGH MONTHLY LOW "TIMES EXCEEDED 10xSTLC=0 1OxSTLCO0 1OxSTLC0O 10xSTLC=O 10xSTLC=0 10xSTLC=0 1OxSTLC=0 MES EXCEEDED 10 mg/kg=0 250 mg/kg=0 50 mg/kg=0 50 mg/kg=0 200 mg/kg=0 2 mg/kg=0 2500 mg/kg=0 TIMESEXCEEDED TTLC>100=0 TTLC>2500=0 TTLC>500=0 TTLC>1000=0 TTLC>2000=0 TTLC>20=0 TTLC>5000=0 REMARKS:

• NUMBER OF SAMPLES TAKEN DURING THE DAY.

APPENDIX 5 DIABLO CANYON POWER PLANT Acute Bioassay January 9 - 13, 2002

/ C

,AQUATIC IiiBIOASSAY &

SCONSULTING LABORATORIES, INC.

TOXICITY TESTING ° OCEANOGRAPHIC RESEARCH January 15, 2002 Ms. Shawn Peck FGL Environmental P.O. Box 272 Santa Paula, CA 93061

Dear Ms. Peck:

We are pleased to present the enclosed bioassay report. The test was conducted under guidelines prescribed in Guidelines for Performing Static Acute Fish Bioassays in Municipal and Industrial Waste Waters as provided to us by Frederic R. Kopperdahi, Fish and Wildlife Water Pollution Control Laboratory, Department of Fish and Game.

Results were as follows:

CLIENT: Diablo Canyon Power Plant SAMPLE I.D.: Discharge 001 PROJECT No: SP200223 DATE RECEIVED: 09 Jan - 02 ABC LAB. NO.: FGLO0120.040 ACUTE ABALONE SURVIVAL BIOASSAY LC50 100% Survival in 100% Sample TUa 0.00 Yours very truly, Thomas (Tim) Mikel Laboratory Director 29 NORTH OLIVE STREET, VENTURA. CA 930ni . rAn., AAq.rAO)

C (

-96 Hr Survival Start Date: 01/09/2002 Test ID: FGL0120040 Sample ID: CAOOOOOOO End Date: 01/13/2002 Lab ID: CAABC Sample Type: EFF3-Power Plant "ample Date: 01/09/2002 Protocol: KOP 76-Kopperdahl Test Species: HR-Haliotis rufescens

• .omments: Discharge 001 Conc-% 1 2 N Control 1.0000 1.0000 100 1.0000 1.0000 Transform: Arcsin Square Root Isotonic Conc-% Mean N-Mean Mean Min Max CV% N Mean N-Mean N Control 1.0000 1.0000 1.4120 1.4120 1.4120 0.000 2 1.0000 1.0000 100 1.0000 1.0000 1.4120 1.4120 1.4120 0.000 2 1.0000 1.0000 Auxiliary Tests Statistic Critical Skew Kurt Normality of the data set cannot be confirmed Equality of variance cannot be confirmed Linear Interpolation (200 Resamples)

Point  % SD 95% CL(Exp) Skew IC05 - ann

- IUU ICI 0 >100 IC1 5 >100 1.0.4 IC20 >100 IC25 >100 0.9-IC40 >100 0.8-IC50 >100 0.7

.0G6 En o 0.5 0.4 0.3.

0.2 0.1 0.0 0 50 100 150 Dose %

Page 1 ToxCalc v5.0.23 Reviewed by:j

f; r -..

Start Date: 01/09/2002 -96 Hr Survival Test ID: FGLOI20040 Sample ID:

End Date: 01/13/2002 CA0000000 Lab ID: CAABC Sample Type:

Sample Date: 01/09/2002 EFF3-Power Plant Protocol: KOP 76-Kopperdahl Test Species: HR-Haliotis rufescens Comments: Discharge 001 Dose-Response Plot 1 ,

0.9 0.8 0.7 2 0.6 c, 0.5 oD 0.4 0.3 0.2 0.1 0

o 00 0 0

z Page 2 Sux~aIC v5.U.23 Reviewed byh6-j-

C -

-96 Hr Survival Start Date: 01/09/2002 Test ID: FGLO120040 Sample ID: CAOOOOOOO End Date: 01/13/2002 Lab ID: CAABC Sample Type: EFF3-Power Plant Sample Date: 01/09/2002 Protocol: KOP 76-Kopperdahl Test Species: HR-Haliotis rufescens Comments: Discharge 001 Auxiliary Data Summary Conc-% Parameter Mean Min Max SD CV% N N Control Temp C 15.44 15.10 16.20 0.41 4.17 10 100 15.13 15.00 15.20 0.08 1.90 10 N Control pH 7.72 7.70 7.80 0.04 2.66 10 100 7.72 7.60 7.90 0.10 4.16 10 N Control DO mg/L 7.43 7.20 7.70 0.16 5.33 10 100 7.71 7.50 8.00 0.16 5.18 10 N Control Salinity ppt 33.00 33.00 33.00 0.00 0.00 10 100 33.00 33.00 33.00 0.00 0.00 10 N Control 0.00 0.00 0.00 0.00 0 100 0.00 0.00 0.00 0.00 0 N Control 0,00 0.00 0.00 0.00 0 100 0.00 0.00 0.00 0.00 0 Page 3 ToxCalc v5.0.23 Reviewed by:-U -.-

APPENDIX 6 DIABLO CANYON POWER PLANT Chronic Bioassay January 10-12, 2002

f C MAQUATIC

\BIASSAY &

. :C ONSULTING LABORATORIES, INC.

TOXICITY TESTING

• OCEANOGRAPHIC RESEARCH January 17, 2002 Ms. Shawn Peck FGL Environmental P.O. Box 272 Santa Paula, CA 93060

Dear Ms. Peck:

We are pleased to present the enclosed bioassay report. The. test was conducted under guidelines prescribed in Short-Term Methods for Measuring the Chronic Toxicity of Effluents and Receiving Waters to West Coast Marine and EstuarineOrganisms, EPA-R 95/136. Results were as follows:

CLIENT: Diablo Canyon Power Plant SAMPLE I.D.: Discharge 001 SP200223 DATE RECEIVED: 10 Jan - 02 ABC LAB. NO.: FGLO120.040 CHRONIC ABALONE LARVAL DEVELOPMENT BIOASSAY NOEC = 100.00 %

TUc = 1.00 IC25 = >100.00 %

IC50 = >100.00 %

Yours very truly, Thomas (Tim) Mikel Laboratory Director 29 NORTH OLIVF qTP*FFT \/*r:NmIru(A fA no' I.....

Abalone Larval Development Test-Proportion Normal Start Date: 01/10/2002 Test ID: FGLO120040 Sample ID: CAOOOOOOO End Date: 01/12/2002 Lab ID: CAABC Sample Type: EFF1-POTW Sample Date: 01/09/2002 Protocol: MBP 90-Anderson et al. Test Species: HR-Haliotis rufescens Comments: Discharge 001 SP200223 Conc-% 1 2 3 4 5 N Control 0.8700 0.9100 0.8900 0.9100 0.9000 10 0.9300 0.9300 0.9400 0.9200 0.9800 18 0.9800 0.9800 0.9300 0.9300 0.9500 32 0.8300 0.7900 0.9000 0.9100 0.9400 56 0.9300 0.8400 0.9600 0.9000 0.9400 100 0.8600 0.7800 0.4500 0.9400 0.8000 Transform: Arcsin Square Root Rank I-Tailed Isotonic Conc-% Mean N-Mean Mean Min Max CV% N Sum Critical Mean N-Mean N Control 0.8960 1.0000 1.2432 1.2019 1.2661 2.164 5 0.9300 1.0000 10 0.9400 1.0491 1.3285 1.2840 1.4289 4.354 5 40.00 16.00 0.9300 1.0000 18 0.9540 1.0647 1.3618 1.3030 1.4289 4.671 5 40.00 16.00 0.9300 1.0000 32 0.8740 0.9754 1.2158 1.0948 1.3233 7.666 5 26.50 16.00 0.8940 0.9613 56 0.9140 1.0201 1.2808 1.1593 1.3694 6.287 5 32.50 16.00 0.8940 0.9613 100 0.7660 0.8549 1.0871 0.7353 1.3233 20.049 5 20.00 16.00 0.7660 0.8237 Auxiliary Tests Statistic Critical Skew Kurt Shapiro-Wilk's Test indicates non-normal distribution (p <= 0.01) 0.89837 0.9 -1.1516 5.2822 Bartlett's Test indicates unequal variances (p = 4.71E-03) 16.8921 15.0863 Hypothesis Test (1-tail, 0.05) NOEC LOEC ChV TU Steel's Many-One Rank Test 100 >100 1 Linear Interpolation (200 Resamples)

Point  % SD 95% CL(Exp) Skew IC05 IC10 59.609 IC15 75.594 91.578 1.0 IC20 >100 0.9 IC25 >100 0.8 IC40 >100 0.7 IC50 >100 0.6 0.5' O 0.4 S0.3 0.2 0.1 0.0

-0.1

-0.2 0 50 100 150 Dose %

Page I ToxCaic v5.0.23 Reviewed byýV

Abalone Larval Development Test-Proportion Normal Start Date: 01/1912002 Test ID: FGLO120040 Sample ID: CAOOOOOOO End Date: 01112/2002 Lab ID: CAABC Sample Type: EFF1-POTVV Sample Date: 01/09/2002 Protocol: MBP 90-Anderson et al. Test Species: HR-Haliotis rufescens Comments: Discharge 001 SP200223 Dose-Response Plot S0.7 o 0.6 z

S0.5 o 0.4 C.

0 I- 0.3 0.2 0.1 C'J CIO 0 to 0 0

z Page 2 Tox'Calc v5.0.23 gReviewed by:.,-a

r, t`

I Abalone Larval Development Test-Proportion Normal Start Date: 01/10/2002 Test ID: FGL0120040 Sample ID: CAOOOOOOO End Date: 01/12/2002 Lab ID: CAABC Sample Date: 01/09/2002 Sample Type: EFF1-POTW Protocol: MBP 90-Anderson et al. Test Species: HR-Haliotis rufescens Comments: Discharge 001 SP200223 Auxiliary Data Summary Conc-% Parameter Mean Min Max SD N Control Temp C CV% N 16.15 16.00 16.30 0.21 2.85 2 10 16.15 16.00 16.30 0.21 2.85 2 18 16.10 16.00 16.20 0.14 2.34 2 32 16.10 16.00 16.20 0.14 2.34 2 56 16.05 16.00 16.10 0.07 1.66 2 100 16,05 16.00 16.10 0.07 1.66 2 N Control pH 7.65 7.60 7.70 0.07 3.48 2 10 7.65 7.60 7.70 0.07 3.48 2 18 7.65 7.60 7.70 0.07 3.48 2 32 7.65 7.60 7.70 0.07 3.48 2 56 7.75 7.70 7.80 0.07 3.43 2 100 7.75 7.70 7.80 0.07 3.43 2 N Control DO mg/L 7.65 7.40 7.90 0.35 7.77 2 10 7.70 7.40 8.00 0.42 8.46 2 18 7.50 7.10 7.90 0.57 10.03 2 32 7.35 6.90 7.80 0.64 10.85 2 56 7.30 6.80 7.80 0.71 11.52 2 100 7.10 6.70 7.50 0.57 10.59 2 N Control Salinity ppt 33.00 33.00 33.00 0.00 0.00 2 10 33.00 33.00 33.00 0.00 0.00 2 18 33.00 33.00 33.00 0.00 0.00 2 32 33.00 33.00 33.00 0.00 0.00 2 56 33.00 33.00 33.00 0.00 0.00 2 133.00 33.00 33.00 0.00 0.00 2 Page 3 ToxCalc V5.0.23 Reviewed by&

S"AQUATIC BI*ASSAY &

, CONSULTING 4;1 LABORATORIES, INC.

TOXICITY TESTING

• OCEANOGRAPHIC RESEARCH CHRONIC ABALONE DEVELOPMENT BIOASSAY DATE: 10 Jan - 02 STANDARD TOXICANT: Zinc NOEC = 10.00 ug/l IC25 = 18.92 ugA IC50 = 25.80 ug/1 Yours very truly, Thomas (Tim) Mikel Laboratory Director 29 NORTH OLIVE STREET. VENTIIPA C(A olnnA . ror z, I....

( (

Abalone Larval Development Test-Proportion Normal Start Date: 01/1012002 Test ID: ABS-231 Sample ID: CAOOOOOOO End Date: 01112Y2002 Lab ID: CAABC Sample Type: ZNSO-Zinc sulfate Sample Date: 01/09/2001 Protocol: MBP 90-Anderson et al. Test Species: HR-Haliotis rufescens omments: Standard Toxicant Conc-pg/L 1 2 3 4 5 N Control 0.9300 0.8400 0.9200 0.9800 0.8100 10 0.8900 0.8100 0.8100 0.8700 0.9000 18 0.5800 0.9100 0.6900 0.6800 0.6500 32 0.3600 0.2700 0.2100 0.2000 0.1900 56 0.0000 0.0000 0.0000 0.0000 0.0000 Transform: Arcsin Square Root 1-Tailed Isotonic Conc-pg/L Mean N-Mean Mean Min Max CV% N t-Stat Critical MSD Mean N-Mean N Control 0.8960 1.0000 1.2590 1.1198 1.4289 9.789 5 0.8960 1.0000 10 0.8560 0.9554 1.1846 1.1198 1.2490 5.200 5 1.063 2.230 0.1560 0.8560 0.9554

"*18 0.7020 0.7835 1.0039 0.8657 1.2661 15.267 5 3.648 2.230 0.1560 0.7020 0.7835

• 32 0.2460 0.2746 0.5161 0.4510 0,6435 15.543 5 10.623 2.230 0.1560 0.2460 0.2746 56 0.0000 0.0000 0.0500 0.0500 0.0500 0,000 5 0.0000 0.0000 Auxiliary Tests Statistic Critical Skew Kurt Shapiro-Wilk's Test indicates normal distribution (p > 0.01) 0.9266 0.868 0.99698 1.07744 Bartlett's Test indicates equal variances (p = 0.33) 3.41325 11.3449 Hypothesis Test (1-tail, 0.05) NOEC LOEC ChV TU MSDu MSDp MSB MSE F-Prob df Dunnett's Test 10 18 13.4164 0.10918 0.12053 0.55834 0.01223 4.5E-08 3, 16 Linear Interpolation (200 Resamples)

Point pg/L SD 95% CL(Exp) Skew IC05 10.249 2.607 2.321 15.154 -0.0179 C100 12.577 2.122 8.603 21.514 0.9749 IC15 14.904 2.055 10.496 22.026 0.5949 1.0 IC20 17.231 1.869 12.267 22.513 0.1343 0.9.

IC25 18.921 1.621 14.230 23.244 -0.0302 IC40 23.047 1.193 19.713 26.343 -0.0217 0.8 IC50 25.798 0.990 22.961 28,841 0.0239 n -'

S0.6 o 0.5 0.4 0 20 40 60 Dose pg/L Page 1 ToxCalc v5.0.23 Reviewed by: **.

K (

Abalone Larval Development Test-Proportion Normal Start Date: 01/10/2002 Test ID: ABS-231 Sample ID: CA0000000 End Date: 01/12/2002 Lab ID: CAABC Sample Type: ZNSO-Zinc sulfate Sample Date: 01/09/2001 Protocol: MBP 90-Anderson et al. Test Species: HR-Haliotis rufescens Comments: Standard Toxicant Dose-Response Plot 1

l-tail, 0.05 level of significance "a 0.7 o 0.6 Z

S0.5 o 0.4 o 0.3 0.2 0.1 Page 2 ToxCalc v5.0.23 Reviewed by,"-,' *. ..

C ..

Abalone Larval Development Test-Proportion Normal Start Date: 01/10/2002 Test ID: ABS-231 Sample ID: CAOOOOOOO End Date: 01/12/2002 Lab ID: CAABC Sample Type: ZNSO-Zinc sulfate

,ample Date: 01/09/2001 Protocol: MBP 90-Anderson et al. Test Species: HR-Haliotis rufescens

,omments: Standard Toxicant Auxiliary Data Summary Conc-pg/L Parameter Mean Min Max SD CV% N N Control Temp C 15.90 15.80 16.00 0.14 2.37 2 10 15.90 15.80 16.00 0.14 2.37 2 18 15.90 15.80 16.00 0.14 2.37 2 32 15.90 15.80 16.00 0.14 2.37 2 56 15.90 15.80 16.00 0.14 2.37 2 N Control pH 7.90 7.90 7.90 0,00 0.00 2 10 7.90 7.90 7.90 0.00 0.00 2 18 7.90 7.90 7.90 0.00 0.00 2 32 7.90 7.90 7.90 0.00 0.00 2 56 7.90 7.90 7.90 0.00 0.00 2 N Control DO mg/L 7.20 6.50 7.90 0.99 13.82 2 10 7.10 6.20 8.00 1.27 15.89 2 18 7.05 6.20 7.90 1.20 15.55 2 32 7.10 6.30 7.90 1.13 14.98 2 56 7.15 6.40 7.90 1.06 14.40 2 N Control Salinity ppt 33.00 33.00 33.00 0.00 0.00 2 10 33.00 33.00 33.00 0.00 0.00 2 18 33.00 33.00 33.00 0.00 0.00 2 32 33.00 33.00 33.00 0.00 0.00 2 56 33.00 33.00 33.00 0.00 0.00 Page 3 ToxCalc v5.0.23 Reviewed by:.;j."