Text

Second Quarter 2004 Report on Discharge Monitoring
	ML042100331
Person / Time
Site:	Diablo Canyon
Issue date:	07/16/2004
From:	Becker J; Pacific Gas & Electric Co
To:	Briggs R; Office of Nuclear Reactor Regulation, State of CA, Regional Water Quality Control Bd
References
	DCL-2004-562
	Download: ML042100331 (99)
	v • d • e

OUTGOING SUBMITTAL CORRESPONDENCE DCL # e-S 2-Original Sent to Addressee:

Copies Sent to CC's:

Copies Sent to BCC's:

Copy to RMS -

Copy to ACTS-DCPP (104/5/2A)

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69-20272 05/03/01 Page I of I DIABLO CANYON POWER PLANT Record of Review Checklist R = Required per AWP 0-004 DCL-2004-S6WZ-Submittal O

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Pacific Gas and Electric Compaany James R. Becker Vice President-Diablo Canyon Operations and Station Director Diablo Canyon Power Plant PO. Box 56 Avila Beach, CA 93424 805.545.3462 Fax: B05.545.4234 Date: July 16, 2004 PG&E Letter DCL-2004-562 Certified/Return Receipt I

7003-3110-0005-7002-7622 I

California Regional Water Quality Control Board Central Coast Region Attn: Monitoring and Reporting Review Section 895 Aerovista, #101 San Luis Obispo, CA 93401-7906

Dear Mr. Briggs:

In accordance with Order 90-09, NPDES No. CA0003751, enclosed is the Second Quarter 2004 Report on Discharge Monitoring at Diablo Canyon Power Plant (Enclosure 1).

Facility Name:

Address:

Contact Person:

Job

Title:

Phone Number:

Pacific Gas & Electric Company Diablo Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424 Bryan Cunningham Supervisor, Environmental Operations 545-4439 WDR/NPDES Order Number:

Type of Report: (check one)

Quarter: (check one):

Order No. 90-09, NPDES No. CA0003751 QUARTERLY 3

ANNUAL 5

1 st 0

2nd 3 rd 0

4th 01 Year:

2004 (Annual Reports for DCPP are Jan-Dec)

Violation(s) (Place an X by the appropriate choice):

0 No (there are no violations to report)

(Please see Overview Item 3)

D Yes

PGE Letter DCL-562 Mr. Briggs, CRWQCB July 16, 2004 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) WDRJNPDES Limit/Condition:

e) Dates of Violation(s)

(reference page of report/data sheet):

f) Explanation of Cause(s):

(attach additional information as needed) g) Corrective Action(s):

(attach additional information as needed)

(If 'YES", see overview section of attached report)

(If "YES', see overview section of attached report)

PGE Letter DCL-562 Mr. Briggs, CRWQCB July 16, 2004 Page 3 I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. The results of the influent and effluent monitoring presented are the observed results of the measurements and analyses required by the monitoring program, and is neither an assertion of the adequacy of any instrument reading or analytical result, nor an endorsement of the appropriateness of any analytical or measurement procedure. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.

If you have any questions, please contact Bryan Cunningham at (805) 545 - 4439.

Sincerely,

-- N 11<-

I I --

'V Name:

James R. Becker

Title:

Vice President-Diablo Canyon Operations and Station Director 2004562/RDH/ktm

PG&E Letter DCL-2004-562 Mr. RogerW. Briggs July 16, 2004 Page 4 cc:

Michael Thomas, CCRWQCB 895 Aerovista, #101 San Luis Obispo, CA 93401-7906 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 ProuIx 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 76011-4005 Director, Division of Reactor Projects U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Dr., Suite 400 Arlington, TX 76011-4005 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Enclosure

PG&E Letter DCL-2004-562 Mr. Roger W. Briggs July 16, 2004 Page 5 bcc:

RDHernandez CDGans JEGardner KBJones BKCunningham (DCPP/10415/3B)*

(DCPP/104/5/9B)*

(DCPP/104/5/517)*

(77/2485)

(DCPP/104/5/34)*

ACTS-DCPP RMS-DCPP Env. Ops. Central Files (DCPP)

Note: Route one copy with distribution as follows: LAHopson, BKCunningham, and RDHernandez for RDHernandez personal file

PG&E Letter DCL-2004-562 ENCLOSURE 1 SECOND QUARTER 2004 REPORT ON DISCHARGE MONITORING AT DIABLO CANYON POWER PLANT

PACIFIC GAS AND ELECTRIC COMPANY NUCLEAR POWER GENERATION Second Quarter 2004 REPORT ON DISCHARGE MONITORING AT DIABLO CANYON POWER PLANT (NPDES No. CA0003751)

PACIFIC GAS AND ELECTRIC COMPANY Second Quarter 2004 REPORT ON DISCHARGE MONITORING AT DIABLO CANYON POWER PLANT TABLE OF CONTENTS page OVERVIEW..............................................1

SUMMARY

OF MONITORING PROGRAM A.

Monitorinq 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 - April 2004 APPENDIX 3: Influent and Effluent Monitoring - May 2004 APPENDIX 4: Influent and Effluent Monitoring - June 2004 APPENDIX 5: Acute Bioassay, April 8 - 12, 2004 APPENDIX 6: Chronic Bioassay, April 8 - 10, 2004

OVERVIEW

1. During the second quarter of 2004, discharges occurred from Discharge Paths 001 (once through cooling water), 001B, 001D, 001E, 001F, 001G, 001H, 001J, 001L, 001N, 001 P, and 002 through 006. No discharges occurred from Discharge Paths 0011, 001 K, 001M, 007 through 017. A list of all of the permit discharge 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 at the plant that would have significantly affected the results previously reported 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. On 4/27/04 and 4/28/04 two steam generator chemical cleaning rinse tanks were discharged. These tanks had been recirculated for a period of time that should have provided representative samples of the tank contents. Pre-discharge characterization samples were collected. The 4/21/04 analytical results of the pre-discharge samples were below the 1 mg/l copper and iron discharge limits. Composite samples were collected during discharge of these two tanks. The analyses results of these composite samples were below the 1 ppm limit for copper, however, iron was above 1 ppm. The first tank was 4.5 ppm and the second tank was 3.9 ppm. A formal cause analysis of this issue determined the pre-discharge samples analyzed on 4/21/04 were not representative of the entire tank contents due to settled iron particulate matter collected in the bottom of the tank and inability of the recirulating system to mix the entire tank contents. No other chemical cleaning rinse tanks were discharged.

As a follow-up to a 5/10/04 "courtesy call", on 5/11/04 RWQCB staff was notified of this issue. Staff requested that the analysis results and an explanation of the issue be included in this quarterly report. The results are included in the data sheets for April and the explanation is provided above.

4. During the second quarter of 2004, maintenance activities that required draining of closed cooling water systems were performed and are summarized below. PG&E received concurrence from the CCRWQCB in a letter dated July 19, 1995 and another letter dated May 19, 1997 (PG&E Letter DCL-95-156 and PG&E Letter DCL-97-533, respectively) regarding the use of glutaraldehyde and isothiazolin to control microbiological growth and corrosion in PG&E's closed cooling water systems.

Discharges are drained at a flow rate such that the chronic toxicity level would be below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001.

Date System Volume Glutaraldehyde Isothiazolin (gal)

(mg/l)

(mg/I) 04/21/04 Unit 2 SCW 1400

<50 6.1 06/02/04 Unit 2 SCW 3318 117 8.1

5. Unit 1 and Unit 2 discharge chlorine monitors lost power on April 22, 2004 and April 23, 2004. Power was restored immediately upon discovery. Because of a refueling outage, Unit 1 was not discharging at that time. An engineering evaluation was completed in accordance with PG&E's January 5, 1994, letter as authorized by the CCRWQCB. The

calculated value from the engineering evaluation for the Unit 2 discharge during that period was 39ppb. These values are well below the 89 ppb Ocean Plan limit.

SUMMARY

OF MONITORING PROGRAM A.

Monitoring of Plant Influent and Effluent

1. The results of the April, May, and June 2004 plant influent and effluent monitoring are reported on Discharge Self Monitoring Report (DSMR) forms in Appendices 2, 3, and 4, respectively.

2. The laboratory report for one acute bioassay on water sampled from Discharge 001, performed April 8 -12, 2004, is included in Appendix 5. The bioassay results show that acute toxicity was 0.00 Tua (no mortality).

3. The laboratory report for one chronic bioassay on water sampled from Discharge 001, performed April 8 - 10, 2004, is included in Appendix 6. The bioassay results show that chronic toxicity was 1.0 Tuc (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 second 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).

2.

In Situ Bioassay Results of the Mussel Watch Program will be reported to the CCRWQCB directly from the California Department of Fish and Game in their 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, remains below NPDES limitations.

Unit I started the second quarter in the 1 R12 refueling outage with both circulating water pumps (CWPs) off, so there were no chemical injections. CWP 1-1 was restarted and simultaneous injections of sodium hypochlorite and Acti-Brom were

initiated on May 15, 2004. CWP 1-2 was not started until June 8, 2004 and the associated sodium hypochlorite and Acti-Brom injections were initiated the same day. CWP 1-1 was shut down on June 9 for two days, turned on for one day, and shut down for three more days (until June 15) for a salt leak search. Both Unit 1 conduits finished out the month of June with simultaneous injections six times daily of sodium hypochlorite and Acti-Brom.

During most of the second quarter, conduit 2-1 continued simultaneous injections of sodium hypochlorite and Acti-Brom six times daily, while conduit 2-2 continued the experiment to test the effectiveness of sodium bromide, receiving simultaneous injections of sodium hypochlorite and sodium bromide six times daily. Acti-Brom treatment for conduit 2-1 was terminated on June 17, 2004 in preparation for a conduit 2-1 cleaning starting on June 19. After the 3-day tunnel cleaning, conduit 2-1 received sodium hypochlorite injections to control microfouling in the condensers. This treatment will continue during the four months remaining before the 2R12 refueling outage in late October. Conduit 2-2 was not cleaned and continued to receive simultaneous injections of sodium hypochlorite and sodium bromide through the end of June.

APPENDIX I DIABLO CANYON POWER PLANT NPDES DISCHARGE POINTS DISCHARGE NUMBER DESCRIPTION 001 Once-Though Cooling Water 001 A Firewater Systems 001 B Auxiliary Salt Water Cooling System 001 C Discharge Deleted 001 D Liquid Radioactive Waste Treatment System 001 E Service Cooling Water System 001 F Turbine Building Sump 001 G Make-Up Water System Waste Effluent 001 H Condensate Demineralizer Regenerant 001 I Seawater Evaporator Blowdown 001 J Condensate Pumps Discharge

__Header Overboard 001 K Condenser Tube Sheet Leak Detection Dump Tank Overboard 001 L Steam Generator Blowdown 001 M Wastewater Holding and Treatment System 001 N Sanitary Wastewater Treatment System 001 P Seawater Reverse Osmosis System Blowdown 002 Intake Structure Building Floor Drains 003 Intake Screen Wash 004 Bio Lab and Storm Water Runoff 005, 008, 009, 013, 014, 015 Yard Storm Drains 006, 007, 010, 011, 012 Storm Water Runoff 016 Bio Lab Seawater Supply Pump Valve Drain 017 Seawater Reverse Osmosis System Blowdown Drain

APPENDIX 2 DIABLO CANYON POWER PLANT Influent and Effluent Monitoring April 2004

(

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO CA 93401 PAGE: (M) 1 FACILITY I.D.

YEAR/MO IDAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 104101 ENDING 04/04 130 06 CA0003751 STATION INFLUENT EFFLUENT001 DELTA TEMP EFFLUENT001 INFLUENT EFFLUENT001 EFFLUENT001P EFFLUENT 002 ANALYSIS TEMPERATURE TEMPERATURE TEMPERATLRE FLOW pH pH pH pH UNITS DEGREES F

DEGREES f

DEGREES F

MGD pH UNITS pH UNITS pH UNITS pH UNITS SMPL TYPE METERED METERED METERED RECORDED GRAB GRAB GMA GRAM FRED.

CONI4NUOUS CONTINUOUS CONTINUOUS DAILY MONTHLY MIONTHLY MOsNTHLY MONTHLY 1

50.2 70.2 20.0 1279 2

7.6 2

50.6 70.7 20.1 1279 2

7.9 3

50.8 71.0 20.2 1279 4

51.1 71.3 20.2 1279 5

50.7 70.9 20.2 1279 6

50.8 71.0 20.2 1279 7

50.5 70.7 20.2 1279 8

50.6 70.8 20.2 1279 9

51.5 71.8 20.3 1279 10 52.5 72.8 20.3 1279 11 52.3 72.6 20.3 1279 12 51.9 72.3 20.4 1279 13 51.6 72.1 20.5 1279 7.9 7.9 14 51.2 71.6 20.4 1279 15 51.0 71.4 20.4 1279 16 51.5 71.9 20.4 1279 17 51.6 72.2 20.6 1279 18 51.5 72.2 20.7 1279 19 51.6 72.4 20.8 1279 20 51.7 7Z6 20.9 1279 21 51.4 71.9 20.5 1279 22 50.6 71.1 20.5 1279 23 50.6 71.2 20.6 1279 24 50.7 71.3 20.6 1279 25 50.6 71.4 20.8 1279 26 51.8 72.4 20.6 1279 27 51.9 72.2 20.3 1279 2

8.0 28 50.9 71.2 20.3 1279 7.8 2

7.8 29 50.9 71.5 20.6 1279 30 51.0 71.8 20.8 1279 31 MONTHLYAVG 51.2 71.6 20.4 1279 7.9 7.9 7.6 7.9 MONTHLY HIGH 52.5 72.8 20.9 1279 7.9 8.0 7.6 7.9 MONTHLY LOW 50.2 70.2 20.0 1279 7.8 7.8 7.6 7.9 ESEXCEEDED NO UMIT NO LIMIT MAX 22 = 0 MAX 2760 =0 NO UMIT NO UMIT NO UMIT NO UMIT ES EXCEEDED C

S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

EXCEPT DURING DEMUSSEUNG.

DAILY WHEN DISCHARGING CHEMICAL CLEANING WASTES FROM DISCHARGES 001D, F. 1, L, AND/OR M.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO CA 93401 PAGE: (M) 2 FACILITY I.D.

YEAR) MO I DAY YEARI MOI DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 04 I 01 ENDING 04 / 04 I 30 06 CA0003751 STATION EFFUENT 003 EFFLUENT 004 EFFLUENTOWIN EFFLUENTOWtP EFFLuENT 03 EFFLUENT0WIF EFFLUENTDW1 EFflUENT0Wt ANALYSIS pH pH OL &t GREASE OIL A GREASE OIL

& GREASE O0L

&GREASE T CHLOR RES CHLORINE USED UNITS pH UNITS pH UNITS mgO mA w

mgt u;l lbslay SMPL TYPE GRABt GRAB COLPOSITE GRAB GRAB GRAB GRAB RECORDED FRED.

MONTHLY MONTHLY WEEKLY WEEKLY n

WEEKLY

()

MONTHLY 2 per CYCLE MONTHLY 1

7.9 6

48 274 2

3 ND(5) 6 40 274 3

6 36 274 4

6 22 274 2

6 23 274 6

6 25 259 7

6 <

20 245 8

7.8 3

9 3

6 23 245 9

6 21 245 10 6

20 245 1 1 6 <

20 245 12 2 6

820 223 1t 3 6 '

20 202 1 4 6

25

'202 1T 5

6 <

20 202 1 6 6

23 202 17 6

25 202 1 8 6E 20 202 1 9 6

23 202 20 6

39 216 21 3

ND(S) 6 33 230 22 6

39 230 23 6

.39 230 24 6

33 230 25 6

25 230 26 6 '

20 230 27 3

6'<

20 245 28 3

10 3

6 25 259 29 6

36 259 30 6

30 238 YAVG 7.8 7.9 5

NO NO 3

21 236 YHIGH 7.8 7.9 13 DISCHARGE DISCHARGE 3

48 274 NTLLOW 7.8 7.9 ND(S) 3 20 202 SXC~EEDED NOULMIT NOULMIT MO0AVGI15 z0 MOAVGI5-0 MO AVG 15 z0 M40AVG 15 -0 IMAX200=0 NOULMIT SEXCEEDED DMAX20=0 DMAX20=0 D MAX 20 =0 DMAX20=D TMS EXCEEDED REMARKS:

'NUMBER OF SAMPLES TAKEN DURING THE DAY.

- WHEN 0OIN IS DISCHARGING TO 001P.

WHEN 001P IS DISCHARGING TO 0D3.

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 al HIGUERA AViLA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 3 FACIUTY I.D.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNGNG 04104 / 01 ENDING 04 / 04 1 30 06 CA0003751 STATION EFFCOIN=>O3 EPF OOIN=>X3 EFFLUENTr00t1D EFFLUENTOIF ANALYSIS TOTL COLIFORM FECAL COLIFORIJ SUSPENDED SOLIDS SUSPENDED SOLIDS tNITS LwNl Oom UPt 1ondi mg 1st FLTR ngtl 2nd FLTR mgW NET rgt1 IstFLTR ngfl 2nd FLTR MnO/

NET St PL IYPE GRAB GRAB GwRA GRAB FREQ 4 IMESdWEEK 4 TIMEStWEEK MONT-LY MONTLY 2

3 2

ND(1) 4 3

ND(S) 5 6

4 3 1 4

31 7

8 2

10 2

6 2

ND(5) 9 10 I11 2

71 2

71 1 2 13 4

29 4

29 14 1 5 2

21 2

21 1 6 17 18 19 20 3

31 3

31 21 22 23 3

31 2

311 24 25 26 27MR ND(*)

28 F

ND(S) 29 30 ONFY AVG NO NO 21 ND(S)

MNHY HIGH DISCHARGE DISCHARGE 72 ND(S)

ONFY LOW ND(S)

ND(S)

TBEXCEEDED 80% SMPLS>IK MEAN>200z NOULMIT NO UMIT MOAVG30=0 NOUMIT NOULMIT MOAVG30=O SEXCEEDED 90 %SMPLS>400 D MAX 100z DMAXOO=0z EXCEEDED I MAX >10K REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

-FOW-WEIGHTED AVERAGES REPORTED.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 4 FACIULTY I.D.

YEAR I MO / DAY YEAR ) MO I DAY STATE COOE NPDES PERMIT U 3 402003001 BEGINMNG 04 1 04 1 01 ENDING 04 04 30 06 CA0003751 STATION EFFLUENT OCIG EFFLUENT 0011 ANALYSfS SUSPENDED SOLIDS SUSPENDED SOLIDS UNITS mt1tstQFLTR mgfl2ndFLTR mgflNET mgllIstFLTR mNtt2ndFLTR mg/tNET SXIPL TYPE GRAS GRAB FREO.

MONTHLY MONTHLY 1

1 ND(5) 2 1

1 ND(5) 3 4

5 6

7 B

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MONTHLY AVG ND(5)

ND(5)

MONTHLY HIGH ND(5)

NDS)

MONTHLY LOW ND(5)

ND(5)

S EXCEEDED NO LIMIT NO LIMIT MO AVG 30=0 NO LIMIT NO LIMIT MO AVG 30=.0 SEXCEEDED D MAX 100= O DMAX100 =

ES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURtNG 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 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) 5 FACILITY LD.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 /04 101 ENDING 041041 30 06 CA03751 STATION EFFUENT 0011 EFFLUENTOOIJ ANALYSIS SUSPENDED SOLIDS SUSPENDED SOLIDS UNTS mgn I StFLTR mgt 2nd RTR mf NET g I1st FLTR m 2nd FLTR mgl NET SMPLTYPE GRAB GRAB

FREQ, MONTHLY MONTHLY c

ND(5) 1 1

1 ND(S) 4 2

ND(S) 5 4

ND(5) 6 7

8 9

10 II 12 13 14 6

6 is 4

ND(S) 16 I

ND(S) 17 2

1 ND(S) 18 19 20 21 22 23 24 25 26

.27 28 29 30 A3HYAVG NO 5

YIIGHI DISCHARGE

,6 MONTHLY LOW ND(S)

SEXCEEDED NOULMIT NOULMIT MOAVG3O=0 NOULMIT NOUIMIT MOAVG3O=0 SEXCEEDED MAX1X = 0 MAX100 = 0 S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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 31 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) 6 FACIULTY l.D.

YEAR J MO I DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04104101 ENDING 04/04/30 06 CA0003751 STATION EFFLUENT0OI EFFLUENTCOIL ANALYSIS SUSPENDED SOLIDS SUSPENDED SOUDS UNITS mg/11 st FTR mg 2rd FLTR gl NET mngll st FLTR mg 2nd FLTR mgI 1NET SMPL TYPE GRAS GRAB FREO.

MONTHLY MONTHLY 2

3 4

5 6

7 8

9 A 1

ND(5) 1 0 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 20 2 1 22 23 24 25 26 27 28 29 30

(

1 c

1ND(5)

MONTHLY AVG NO ND(S)

JONTHLY HGH DISCHARGE ND(S)

MONTHLY LOW ND(S)

S EXCEEDED NO UMIT NO UMIT MOAVG30=O NO LIMIT NO UMIT MOAVG30z S EXCEEDED DMAX100 = O D MAX 100 = 0 S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRLNPAL EXECUTIVE OFfICER GREGORY M. RUEGER 5

CALIFORNIA REGIONAL WATER OUAUTY 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 9AN LUIS OBISPO, CA 93401 PAGE: (M) 7 FACIUTY LD.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 / 04 / 01 ENDING 04 1 04 / 30 06 CA0003751 STATION EFFLUENT001M EFFUENTOOIN EFFLUENT001P ANALYSIS SUSPENDED SCLIDS SUSPENDED SUDS SUSPENDED SOLIDS UNITS mgV1 st FLTR mtl 2ndflTR mf NET mgfl nm11stFLTR mgt 2ndFLTR W 1NET S9PL TYPE GRAS COMPOSITE GRAB FREa MONTHLY WEEKLY MONTHLY 1

9 9

ND(5) 2 20 3

4 5

6 7

B 18 10 ii 12 20 13 14 15 16 17 18 19 20 21 15 22 23 24 25 26 27 28 12 29 30 MONTHLY AVG NO 1 7 ND(5)

.K)NTHY HIGH DISCHARGE 20 ND(5)

MONTHLY LOW 12 ND(S)

ESXEXOEDED NO UMIT NO UMIT MOAVG30=0 MOAVG60=O NO UMIT NO UIMT MOAVG30=O SEXOSEDED DMAX100=0 D MAX100 =0 S EXCEEDED REMARKS:

NUMBEROFSAMPLESTAKENDURINGTHEDAY.

CAUFORNIA 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) 6 FACILITY l.D.

YEAR I MO / DAY YEAR / MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 104 101 ENDING 04 104 1 30 06 CA0003751 STATION EFFLUENT 002 EFFLUENT 003 ANALYSIS SUSPENDED SOUDS SUSPENDED SOLUDS UNITS mg/ IstFLTR mwg 2nd FTR g/ NET mgI lt FLTR mgI 2nd FTR W NET SMPLtYPE GRAB GRAB FREC.

MONTHLY MONTHLY I

1-1-

111 2

2 7

2 6

2 ND(5) 3 4

5 6

7 8

2 22 2

12 2

10 9

10 I 1 12 13 14 15 1s 17 1 8 19 20 21 22 23 24 25 26 27 28 29 30 31 MNHYAVG ND(S) 10 I4Ot7HLY HIGH ND(5) 1 0

%KnYLOW ND(5) 1 0 ES EXCEEDED NO UMIT NO UMIT MOAVG30=0 NO UMIT NO UMIT MOAVG30=0 ESEXCEEDED DMAX100 = O DMAX100= O IES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 91 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 9 FACIUTY 1.D.

YEAR I MO / DAY YEAR IMO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 04 I 01 ENDING 04 1 04 1 30 06 CA0003751 STATION EFFLUENT 003 EFFLUENT OIN EFFLUENT 001 EFFLUENT D01 EFFLUENT 001 EFFLUENT 001 ANALYSIS SUSPENDED SOLIDS SEITL SOLIDS T CHROMIUM COPPER NICKEL ZINC UNITS n~I1 1st FLTR mgl1 2nd FLTR mgfI NET MO1 ugfl ugtl ugfl ugt1 SMPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB FREO.

WEEKLY WiEN DOIN b001P 003 WEEXLY MONTHLY MONTHLY MONTHLY MONTHLY 3

4 5

6 7

8 ND(0.1) 9 10 1i 12 ND(0.1) 13 ND(10)

ND(10)

ND(10) 14 15 17 18 19 20 21 ND(O.1) 22 23 24 25 26 27 28 ND(0.1) 29 30 MNHYAVG NO NDO0.1)

ND(10)

MNHY IIGH DISCHARGE ND(0.1)

ND(10)

ND(lO)

ND(10)

MONTHLY LOW ND(0.1)

NO(10)

ND(1)

ND(10)

ND(1 0)

SEXCEEDED NOULMIT NOUIMIT MOAVG30-0 MO AVG 1.0 z0 6M-MED 10 =0 6M-MED 10 -O 6M-MED 30 0 6M-MED 70=0 ESEXCEEDED DMAX100 r 0 DMAX3.0 0

DMAX40:0 DMAX50 = O DMAX100 = O DMAX380 = O ES EXCEEDED I MAX 100 = 0 I MAX 140 = 0 I MAX 260 = 0 I MAX 990 = 0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

CAUFORNIA REGIONAL WATER OUALITY 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: (Q) 1 FACILITY I.D.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 04 / 01 ENDING 04 /04 /30 06 CA0003751 STATION INFLUENT INFLUENT INFLUENT INFLUENT EFFLUENT 01i EFFLUENT 01D EFFLUENT OO1G EFFLUENT OOIH ANALYSIS T CHROMLUM COPPER NICKEL AM.IONIA (N)

AMULONA (N)

OIL & GREASE OIL A GREASE OIL & GREASE ULITS ugt1 ugfl uvh ugl1 ug/1 MO mgt1 Mrl SMPL TYPE GRAB GRA9 GRAB GRAS GRAB GRA9 GRAB GRAB FREQ JIAP/JUIOCT JAlAPlJJTOCT JAJAPIJAlJOCT JAIAPIWJXCT J VAPFIJWOCT WAPllAJOCT JAIAPIJIJOCT WVAPIJUUOCT I

3l 1II'1I*

3 3

3 4

5 6

2 5

7 8

9 10 11 3

12 13 ND(10)

ND(10)

ND(10) 2 3

14 16 17 18 19 20 Nc 3

21 22 ND(200)

ND(200) 23 25 26 27 28 29 30 31 OrHYAVG ND(10)

ND(10)

ND(200)

ND(200) 3 c

3 3

MXIY HIGH ND(10)

ND(10)

ND(200)

ND(200) 7

-c 3

3 MONTHLY LOW ND(10)

ND(10)

ND(200 ND(200 3

3 3

SEXCEEDED NO UMflT NOULMIT NOULMIT NOULMIT 6M-MED 3060 c0 MOAVG15=0 MOAVG15=0 MOAVG15=0 SEXCEEDED D MAX 12240 =0 DMAX20=-0 DMAX20 z0 DMAX20 =

EXCEEDEDI M&AX306C00 0

REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

FLOW-WEIGHTED AVERAGE RESULT REPORTED.

CALIFORNIA REGIONAL WATER OUAUTY DISCHARGE SELF MONITORJNG REPORT PACIFIC GAS AND ELECTRIC CO.

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YEARIMO /DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 04 1 01 ENDING 04 / 04 /30 06 CA0003751 STATION EFFLLEN XtII EFFLUENT OIJ EFFLUENT001K EPFLUENT01L EFFLUENTOQIM EFFLUENT001P EFFLLENT 02 EFFLUENT 03 ANALYSIS OIL

& GREASE OIL s GREASE IL s GREASE OIL S GREASE OIL

& GREASE Ot & GREASE OL & GREASE CIL

& GREASE UNrTS mOtl MOst mg1 wt mgOI mO/I mgvi "41 SLPL TYPE GRam GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREQ JWAPIJUXXCT JAAPIIAowCT JWAPIJtGT J)JAP/IlJOCT JAIAPIJJJOCT JAAP/JUJOCT JAAPfJUIJOCT

.UJAPIIJI 1

3 3

2 2<

3 3

4 5

6 7

B 3

9 3

10 11 12 13 14 13 15ESXEEE 3OVl=

MOV1=9OV1=

OV1=

16 3

17 18 19 20 21 22 23 24 25 26 27 28 29 30 AONTHLY AVG NO 4

NO 3

NO IC 3

3 3

MNHY NW~

DISCHARGE 13 DISCHARGE 3

DISCHARGE 3

C 33 MNHY LOW 3

3 c

3 3

3 EEXCEEDED MOAVG15zO MOAVG15=0 MOAVG15:O MOAVGI5=0 MOAVG15-0 MOAVG15=0 MOAVG15=0 MOAVG15:O EXCEEDED DMAX20=0 DMAX20 =O DMAX20 - O DMAX20=0 DMAX20=0 DMAX20 =O DMAX20a0 DMAX20 = O ES ECEElED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO CA 93401 PAGE: (Q) 3 FACILITY l.D.

YEAR I MO I DAY YEARIMOIDAY STATE CODE NPDES PERMIT #

3 402003001 BEGINMNIG 04 1 04 1 01 ENDING 04 1 04 1 30 06 CA0003751 STATION EFFLUENT 004 EFFLUENT 001 EFFLUENT 0010 EFFLUENT 001H EFFLUENT 011.

EFFLUENT C01F ANALYSIS OL&GREASE TOX CONCEN CADMUM CADMILU6 CADIUM CADMIUM LRITS MO TU U51 ugrl ug/

ugn SMPL TYPE GRAB GRAB OTRLY COMP OTRLY CouP OTRLY COCMP 1 WrEEK COMP FRE.

J VAPIIJUOCT JAPIJUC JNAPJOCT JJAPIJUOCT AIAVAPIiJJOCT.JAPIAAFOCT I

3 2

1.1 3

0.8 2

ND(0.2) 0.8 4

5 6

7 0.20 8

9 1 0 1 1 12 13 1 4 1 5 1 6 1 7 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 INIYAVG c

3 0.00 0.8 1.1 ND(O.2) 0.8 HIGHI 3

0.00 0.8 1.1 ND(0.2) 0.8 YLOW 3

0.00 0.8 1.1 ND(0.2) 0.8 E EXCEEDED MOAVG15=0 NO LIMIT NOULMIT NOULMIT NO LIMOT SEXCEEDED DMAX20= 0 SEXCEEDED 6M-MED 0.2640 REMARKS:

JMBER OF SAMPLES TAKEN DUPING THE DAY.

PRtNCIPAL EXECUTNVE OFFICER GREGORY M. RUEGER

CAUFORNIA 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: (0) 4 FACIUTY I.D.

YEAR IMO I DAY YEARIMOIDAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 104 1 01 ENDING 04 104 1 30 06 CAX003751 STATION EFFLUENTOCID EFFLENT0o1H EFFLUENTOOlL EFFUENT001F EFFLUENTWOID EFFLUENT001H EFFLUENT 001L EFFLUENTDOIF ANALYSIS CHROMIUA T CHROMIUM T CHROMIUM T CHROMIUM COPPER COPPER COPPER COPPER U1TS Von ugh Vgh ugh uqii Von ugh ugh SMPL TYPE QTRtY COP OTRLY COMP a TRLY COUP I WEEK COUP OTRLY COP TRLY COMP TIRLYCOMP WEEK CW FREQ JAIAPI*AIOCT JVAPIA/JlCT JAAP/PJOCT JAIAPIJKJOCT JINAP/IJXJCT JAIAP1JLOCT JAIAPIAJJOCT IAAPIJXlIOCT 2

8 29 3

2 2

1 3

19 2

200 53 4

5 6

7 8

9 1 0 1 2 13 14 15 1 6 1 7 20 21 22 23 24 25 26 27 28 29 30

'MONTHLY AVG 2

8 1

3 19 29 200 53 MAONTHLY HGH 2

8 2

3 19 29 396 53 MIONITHY LOW 2

a ND(l) 3 1 9 29 3

53 ES EXCEEDED NO LIMIT NO IUMIT NO LIMIT NO LIMIT NO ULMIT NO UIUT NO LIMIT NO LIMIT ES EXCEEDED qES EXCEEDED REMRS:

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 081SPO. CA 93401 PAGE: (0) 5 FACIUTY l.D.

YEAR / MO / DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 04 1 01 ENDING 04 1 04 1 30 06 CA0003751 STATION EFFLUENTO0ID EFFLUENT001H EFFLUENT0X7L EFRUENT 001F EFFLUENTOID EFFLUENTOOIH EFFLUENT001L EFFUENT0XIF ANALYSIS LEAD LEAD LEAD LEAD MERCURY MERCURY MERCURY MERCURY UMTS uV ugvh ugh1 gi UV7 usn utg ug/h SMPLTYPE QTRLY CObP OTRLY COMP OTRLY COW 1 WEEK COCP OTRLY COUP OTRLY CO17P QTRLY COMP I WEEK COMP FRED.

.IAPIACT WAP/JUUOCT JNAPIJUIJOCT JVAPIJOCT

.JAAPIJUJOCT JNAP/JJOCT JAIAPI/TuCr JAIAP/IUDCT 2

6.2 ND(0.1) 3 7.3 2

1.0 5.8 ND(O1) 2 ND(0.1)

ND(0.1) 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 MNHY AVG3 7.3 6.2 1.0 5.8 ND(D.11)

ND(O.1)

ND(0.1)

MNHY HIGH 7.3 6.2 1.5 5.8 ND(0.1)

ND(0.11)

ND(0.1)

HLYLOW 7.3 62 0.5 5.8 ND(0.1)

ND(Q1)

ND(0.1)

TItES EXCEEDED NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LINMT NO UMIT NO UMIT NO LIMIT TIMES EXCEEDED S EXCEEDED 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 31 HIGUERA AVILA BEACH. CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (Q) 6 FACILITY I.D.

YEAR / MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 04 1 01 ENDING 04 1 04 30 06 CA0003751 STATION EFFLUENTOWID EFRULENTOWlH EFFLUENTLWIL EFFLUENT0WIF EFFLUENT WtD EFFLUENT0WIH EFFLUENTOXtL EFFLUENT0W1F ANALYSIS MCKEL NICKEL NICKEL NICKEL SILVER SILVER SILVER SILVER UNITS utg tugl ugfl ugn ug/l ul ugf7 ugl SMPL TYPE OTRLY COKIP OTRLY COMP OTRLY COMP I WEEK COMP OTRLY COMP GTRLY COMP OTRLY COl' I WEEK COMP FREQ NJAAPIJtAJCT JA/APJOCT JAIAPIAjJOCT JNAPIDJI CT JZVAP/AA.LJCT NAPIMJUIOCT JAPI

=CT NAPWJCCT 2

9 ND(1) 3 18 2

67 14 ND(l) 2 ND(1)

ND(1) 4 5

6 7

8 9

10 11 12 13 14 is 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MONTHLYAVG 18 9

67 14 ND(l)

ND(1)

ND(1J ND(1)

MONTHLYHI4GH 1 8 9

134 1 4 ND(1)

ND(1)

ND(l)

MONTHLY LOW 1 8 9

ND(1) 14 NDOl)

ND(1)

ES EXCEEDED NO UMT NO LIMIT NO LIMIT NO ULMIT NO UMIT NO UMIT NO LIMIT NO LIMIT ES EXCEEDED ES EXCEEDED 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 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (0) 7 FACLITY l.D.

YEAR / MO / DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 04 01 ENDING 04W 04/30 06 CA0003751 STATION EFRUENTOOID EFFLUENT0W1H EFFLUENTOO1L EFFLUENrOXIF ANALYSIS ZNC ZINC ZINC ZINC UNITS uvh ugl ug' ugtV SMPL TYPE OTRLY COMP OTRLY COUP QTRLY COMP I WEEK COMP FREa JIPJAP OCT JAPAP.AXIOCT EWAPIAJJT JJAPIAIOCT 2

ND(10) 3 170 2

40 30 4

5 6

7 8

9 1 0 12 13 14 1 5 1 6 17 15 19 20 21 22 23 24 25 26 27 28 29 30 MNLYAVG 170 ND(l 0) 40 30 MONTLY HIGH 170 ND(10) 50 30 MONTHL.YLOW 170 ND(10)

ND(1O) 30 TES EXCEEDED NO UMIT NO UMIT NO UMIT NO UMIT EXCEEDED ES XCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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) 8 FACILITY I.D.

YEAR I MO I DAY YEAR I MO / DAY STATE CODE NPDES PERMIT#

3 402003001 BEGINNING 04 / 04 i 01 ENDING 04 1 04 1 30 06 CA0003751 STATION EFFLUENTOCID EFFUIENT 00F EFFLUENT01o1 EFFLUENT 00L EFFLUENToolm ANALYSIS COPPER COPPER COPPER COPPER COPPER UNTS mgll wf mnt1 mglJ ni SMPL TYPE 24HR CONP.

24+R COUP.

2444R COMP.

24-HR COMP.

24-HR COMIP.

FREa METAL CLNG METAL CLNG METAL CING METAL C.NG METAL CLNG 2

3 4

5 6

7 8

9 1 0 12 13 14 1

6 17 18 19 20 21 22 23 24 25 26 27 0.2 28 0.2 29 30 MONTHILY AVG NO 0.2 NO NO NO MONTHLY HGH DISCHARGE 0.2 DISCHARGE DISCHARGE DISCHARGE MNHYLOW 0.2 MES EXCEEDED MOAVG1=0 MOAVG1=0 MOAVG1=0 MOAVG1=0 MOAVGI=0 MESEXCEEDED DMAX1 =0 DMAX1 =0 DMAXI =0 DMAX1 =0 DMAXI =0 MES EXCEEDED 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 31 HIGUERA AYILA BEACH, CAUF 93424 S~AN LUIS OBISPO. CA 93401 PAGE: (0) 9 FACILITY I.D.

YEAR I MO I DAY YEAR I MO I DAY STATE COOE NPDES PERMIT #

3402003001 BEGINNING 04 1 04 I 01 ENDING 04 /04 I 30 06 CA0003751 STATION EFFLUENTOOiD EFRUENTOCIF EFFLUENT0011 EFFLUENT 0tL EFFLUENT00tM ANALYSIS IRON IRON IRON IRON IRON LUNTS mnvn mgt mgfl mgtt MOf SUPLTYPE 24-HR CUP.

24-H COIP.

24HR COP.

24-HR COMP.

FREQ METAL CLNG METAL CLNG METAL CLNG METAL CLNG METAL CLNG 2

3 4

5 6

7 8.

9 1 0 11

¶12 13 1 4 1 5 16 17 18 1 9 20 21 22 23 24 25 26 27 4.5 28 3.9 29.

30 MNHYAVG NO 4.2 NO NO NO VINHYHIGH DISCHARGE 4.5 DISCHARGE DISCHARGE DISCHARGE MTY LOW 3.9 IESEXCEEDED MOAVG1=0 MOAVG1= 1 MOAVG1=0 MOAVG I = 0 MOAVG1=0 S EXCEEDED DMAX 1 =0 DMAX1 =2 DMAX1 =-0 DMAX1 = 0 DMAXI =0 S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

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YEAR I MO / DAY YEAR/MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 1 04101 ENDING 04 1 04 130 06 CA0003751 STATION EFFLUENT 001 IFLUENT EFFLUENT INFLUENT EFFLUENT 01 INFLUENT EFFLUENT xt INFLUENT ANALYSIS TITANIUM ARSENIC ARSENIC CADMIUM CADMIUA LEAD LEAD ZINC UNITS u911 ugt ugh ugh w

u1h ugh ugh SMPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREO.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 9

1 0 1 1 1 2 1 3 ND(10) 1 4 1 5 1 6 1I7 18a 1 9 20 21 22 23 24 25 26 27 28 29 30 YAVG ND(10)

MNHYHIGH ND(10)

MNHY LOW ND(10)

EEXCEEDED NOULMIT NOULMIT 6M-MED 30 =0 NO LIMIT 6M-MED 10=0 NOULMIT 6M-MED 10 0 NOULMIT SEXCEEDED D LAX 150 =

DMAX20 =0 DMAX4O0z TIES EXCEEDED I MAX 400 =0 IMAX50-0 I MAX 100 =0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

- INFLUENT ANALYSIS PERFORMED FOR COMPARISON TO EFFLUENTS.

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 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (A) 2 FACILITY I.D.

YEAR ) MO / DAY YEAR I MO I DAY STATE CODE NPDES PERMIT 1 3 402003001 BEGINMING 04 I 04 I 01 ENDING 04 I 04 /30 06 CA0003751 STATION INFLUENT EFFLUENT 001 INFLUENT EFFLUENT 001 INFLUENT EFFLUENT 001 INFLUENT EFFLUENT 001 ANALYSIS MERCURY MERCURY SILVER SLVER CYANIDE CYANIDE PHENOLIC CMP PHENOLIC CVP LNTS uot1 iigfl uf ugh w

uw ug ONCL) ugf (NONCL)

SLIPL TYPE GRAB GRAB GRAB GRAB GRAS GRAS GRAB GRAB FREO.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 1I 12 1 3 1 4 1 5 1 6 1 7 1 8 19 20 21 22 23 24 25 26 27 28 29 30 MNHY AVG MONTHY HIGH MONTHY LOW S EXCEEDED NO UMIT 6M-MED 0.2=0 NO UMIT 6M-MED 2.9=0 NO LIMIT 6=-MED 300 NO LIMIT 6M-MED 150=0 SEXCEEDED DMAX0.8 =0 DMAX13.6-0 DMAX I0=0 DMAX610=0 TfS EXCEEDED IMAX 2 = 0 IMAX 35 0 IMAX 260=0 IMAX 1530=0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGI ON PO BOX 56 81 HIGUERA AVILA BEACH. CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (A) 3 FACILITY I.D.

YEARI MO I DAY YEAR IMO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 04 I 01 ENDING 04 1 04 1 30 06 CA0003751 STATION INFLUENT EFFLUENT DOI EFFLUENT 001D EFFLUENTODID EFFLUENT001D EFFLUENT 005 EFFLUENT OO8 ANALYSIS CHDOR PHEN0L CItOR PHENOL LITHILUM BORON HYDRAZINE OIL & GREASE OIL & GREASE tNTS ugn ugt1 mgol mgi mgfi mg/I mg/1 SUIPITYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREa OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 5

7 8

9 10 11 1,

1 2 13 1 4 1 5 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MONTHLYAVG MONTHLY HIGH MONTHY LOW IESEXCEEDED NOUMIT 6M-MED10=0 NOUMIT NOUMIT NOUMIT M4OAVG15=0 MOAVG15=0 TESECEEDED DMAX 20=0 DMAX 2DO DMAX 20=0 ES EXCEEDED IMAX 50=0 REMARKS:

NUMBER OFSAMPLES TAKEN DURING THE DAY.

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 31 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A) 4 FACIUTY I.D.

YEAR! MO /DAY YEAR I MO / DAY STATE CODE NPDES PERMIT U 3 402003001 BEGINNING 04 / 04 101 ENDING 04 / 04 1 30 06 CA0003751 STATION EFFLUENT oo9 EFFLUENTO13 EFRUENTOIS EFFLUENT 016 EFFLUENT017 INFLUENT EFFLUENT 00t ANALYSIS OIL & GREASE IL & GREASE OIL & GREASE IL & GREASE OIL & GREASE PCs'S PC8S UNtTS MO MD" MO MO n1i ugv ugh SUPL TYPE GMLAE GRAB GRAB GRAB GRAB GRAB GRAB FRED.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 1 0 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 YAVG YLOW ESEXCEEDED MOAVG15=0 MOAVG15=0 MOAVG15=0 MOAVG 15=0 MOAVG15-0 NOUMIT NOLIMIT EXCEEDED DMAX 2D0=

DMAX 20=0 DMAX 20=0 DMAX 20=0 DMAX20=0 IESEXCEECED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFICER GREGORY M. RUEGER l

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: (A) 5 FACILITY l.D.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 104 101 ENDING 04 104 130 06 CA0003751 STATION EFFLUENTOOIN EFRUENTOIN EFFLUENTOOIN EFRUENTOIN EFFLUENT0CIN EFRUENTO0IN EFRUENTO0IN EFFLUENTO0IN ANALYSIS SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUOGE SLUDGE SLUDGE UNITS PAOISTURE TOT ItlDL N AMU0MA (N)

NTRATE (N)

TOT PHOSPFS pH OIL & GREASE BORON S'L TYPE no; mog mg mgAg pH unr mgAg mghg FREQ GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 1 0 1 1 12 13 14 15 1 6

`17 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 31 MONTHLYAVYG MONTHLY HIGH MONTHLY LOW IES EXCEEDED NO LIMIT NO UMIT NO UMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT ES EXCEEDED ES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURNG THE DAY.

PRINCIPAL EXECUTNE OFFICER I GREGORY M. RUEGER I

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE:(A) 6 FACLITY ID.

YEAR/MO IDAY YEAR / MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 04 / 01 ENDING 04 / 04 1 30 06 CA0003751 STATION EFQUENT WIN EFFLUENT 001N EFFLUENTO0IN EFFLuENT001N EFFLUENTOOIN EPFLUENT001N EFFLUENTOIN EFFLUENT 001N ANALYSIS SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE UNtTS CADMILI COPPER CHROMIUU LEAD NICKEL MERCURY ZINC VOLUME SIJPLTYPE nfog mgg mg9g gk rog mg9g mog bns FREO.

GRAS GR GRAB GRAB GMA GRAS GRAB OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 10 ii 12 13 14 15 16 1I7 18 19 20 21 22 23 24 25 26 27 28 29 30 31 YAVG MDN. IGH YLOW ESEXCEEDED I1xSTLC=0 10xSTLC=O IOXSTLC=0 10XSTLC=0 tOxSTLC=o 1OXSTLC=0 10xSTLC=0 ESEXCEEDED 10 gkg=0 250 rnkg-O 50 mgikg=0 50so mg0 200 1g1g=0 2 mgkg=0 2500 Mg1g0 ES EXCEEDED TTLC>10O0 TTLC>2500=O TTLC>500=0 TLC>1000=0 TrL(>200=0=

TTL>20=0 TTLC>5000=0 REMARKS:

NUM8ER OF SAMPLES TAKEN DURING THE DAY.

APPENDIX 3 DIABLO CANYON POWER PLANT Influent and Effluent Monitoring May 2004

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. CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) 1 FACILITY l.D.

YEAR I MO / DAY YEAR I MO I DAY STATE CODE NPDES PERMIT t 3402003001 BEGINNING 04 105 101 ENDING 04 105 Q 31 06 CA0003751 STATION INFLUENT EFFLUENT0OI DELTA TEMP EFFLUENT X1 INFLUENT EFFLUENTOSt EFFLUENTS1P EFFLUENT X2 ANN.YSIS TMPERATURE TEMPERATURE TEMPERATURE FLOW pH pH pH pH UNITS DEGREESF DEGREESF DEGREESF MGD pH LtNTS pH U4TS pH NITS pH UNTS SMPL TYPE METERED METERED METERED RECORDED GRAB GRAB GRAB GRAB FREQ.

conNUUDJS CONTINUOUS CONTINUOUS DAILY MONtJHLY MONTHLY

(-I MONTHLY MONTHLY 1

50.9 70.2 19.3 1279 2

51.2 70.7 19.5 1279 3

51.1 71.0 19.9 1279 4

51.4 71.3 19.9 1279 2

7.7 2

8.0 5

51.6 70.9 19.3 1279 6

5Z4 71.0 18.6 1279 7

51.6 70.7 19.1 1279 8

51.1 70.8 19.7 1279 9

51.0 71.8 20.8 1279 10 51.1 72.8 21.7 1279 11 50.9 726 21.7 1279 12 50.8 7Z3 21.5 1279 13 50.8 7Z1 21.3 1279 14 50.8 71.6 20.8 1279 15 50.8 69.5 18.7 1611 16 50.9 66.7 15.8 1891 17 51.0 67.0 16.0 1891 7.8 7.8 18 51.3 67.2 15.9 1891 19 51.1 67.2 16.1 1891 20 513 66.5 15.2 2015 21 51.2 67.2 16.0 1891 22 50.8 66.7 15.9 1891 23 50.8 66.8 16.0 1891 24 51.2 67.2 16.0 1891 25 51.6 67.7 16.1 1891 26 51.8 68.1 16.3 1891 27 51.8 67.6 15.8 1891 28 512 66.7 15.5 1891 29 51.0 66.7 15.7 1891 30 50.8 66.7 15.9 1891 31 51.1 67.3 16.2 1891 MONTHLY AVG 51.2 69.1 17.9 1610 7.8 7.8 7.7 8.0 MONTHLY HIGH 52.4 72.8 217 2015 7.8 7.8 7.7 8.0 ONTH1LY LOW 50.8 66.5 15.2 1279 7.8 7.8 7.7 7.9 SEXCEEDED NO UMIT NO UMIT MAX 22 = 0 MAX 2760 0 NO UMIT NO UMIT NO UMIT NO UMIT S EXCEEDED (1

S EXCEEDED REMAR3S:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

- EXCEPT DURING DEMUSSEUNG.

DAILY WHEN DISCHARGING CHEMICAL CLEANINGWASTES FROM DISCHARGES 001D, F. L ANDIORM.

PRNCOPA E U

OFFICER GREGORY M. RUEGER

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 31 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 2 FACIUTY I.D.

YEAR I MO I DAY YEAR / MO I DAY STATE COOE NPDES PERMIT 1 3 402003001 BEGINNING 04 1 05 1 01 ENDING 04 1 05 1 31 06 CA0003751 STATION EFFLUENT 003 EFFLUENT 004 EFFLUENT 001N EFFLUENT Y1P EFFLUENT 003 EFFLUENT O0iF EFFLUENT 001 EFFLUENT 001 ANALYSIS pH pH OIL GREASE OIL

& GREASE OIL S GREASE OIL

& GREASE T ChLOR RES CHLORINE USED UNTS pH UNITS pH UNLTS v

mg1 m9g MO ug bs4da SMPL TYPE GRAB GRAB COMPOSITE GRAB GRAB GRAB GRAB RECORDED FREQ.

MONTHLY MONTHLY WEEKLY WEEKLY

(

WEEKLY (I

MONTHLY 2 per CYCLE MONTHLY 1

6 27 216 2

6 <

20 216 3

6'<

20 216 4

8.0 7.9 6 <

20 216 5

3 <

5 6 <

20 216 6

3 6 <

20 230 7

6'<

20 252 8

6 <

20 259 9

6 <

20 259 10 6 <

20 245 11 6 <

20 230 12 6 <

20 230 13 6 <

20 230 14 3

ND(5) 6' 20 230 1 5 8

17 269 16 12 21 346 17 12<

13 346 18 12 21 324 19 12 21 281 20 3

ND(5) 12 21 238 21 12 23 238 22 3

12 25 259 23 12 25 259 24 12 28 259 25 3

ND(5) 12 28 274 26 12 30 295 27 12 25 302 28 12 25 302 29 12 28 302 30 12 28 302 31 12 28 302 MONTHLYAVG 8.0 7.9 5

NO NO 3

14 263 MONTHLY HFGH 8.0 7.9 6

DISCHARGE DISCHARGE 3

30 346 MONTHLYLOW 8.0 7.9 ND(5) 3

<7 216 EXCEEDED NOUMIT NOUMIT MOAVG15=0 MOAVG15=0 MOAVG15=0 MOAVG15=0 IMAX200=0 NOLIMIT TEXCEEDED DMAX20=0 D MAX 20 = 0 D MAX 20 = 0 DMAX20=0 S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

- VWIEN OtN IS DISCHARGING TO OO1P.

-WHENOOIPISDISCHARGINGTO003.

^ALIFORNIA 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. CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) 3 FACILITY LD.

YEAR I MO I DAY YEAR / MO I DAY STATE CODE NPDES PERMIT U 3 402003Q01 BEGINNING 04 1 05 01 ENDING 04 1 05 1 31 06 CA0003751 STATION EFF 001N>003 EFF COIN=>003 EFFLUENTOOID EFFLUENT001F ANALYSIS TOTL COWFORMI FECAL COLIFORM SUSPENDED SOLIDS SUSPENDED SOLIDS UNTS MPNM1Oi U'ANIIl00nr mglM stFLTR m9 2nd FLTR mg/ NET mgfl stFtTR IntI 2ndr FLTR mgl NET SLIPL TYPE GRAB GRAB GRAB GRAB FREQ 4 TIUESJWEEK 4 TiAESrWEEK MONTHLY MONTHLY 2

3 I

ND(_)

4 2

38 2

38 5

6 2

8 2

3 2

5 7

8 9

2 4

2 <

1 2

ND(S) 10 II 12 13 14 1OW ND(S) 15 16 17 18 19 20 21 2

9 2

9

.22 1ND(5) 23 24 25 26 27 28 29 31 MONTHY AVG NO NO 1 3 5

MONTHLY HIG DISCHARGE DISCHARGE 41 5

MON~THY LOW ND(5)

ND(S)

TS D(EEDED 50% SMPLS>1K MEAWt200=

NOULMIT NOULMIT MOAVG3O=O NOULMrT NOULMiT MOAVG3O00 TIES DOEEDED 90 %SUPLS'400 D MAX 100 =O D MAX 100= 0 TMSEX(CEEDED I MAX >10K REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

- FLOW-WEIGHTED AVERAGES REPORTED.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 91 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO CA 93401 PAGE: (M) 4 FACIuTY I.D.

YEAR I MO I DAY YEAR / MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 I 05 I 01 ENDING 04 1 05 1 31 06 CA0003751 STATION EFRUENTOOIG EFFLUENT OIH ANALYSIS SUSPENDED SOLUDS SUSPENDED SOLIDS UNITS mgf lstFLTR mgt 2nd FLTR mgI NET mgll Ist FLTR mgtI 2nd FLTR mg NET SMPLTYPE GRAB GRAB FREO.

MtONTHLY MONTHLY 1

ND1)ND(5) 2 3

4 5

6 7

1GH ND(5) 8 9

10 It 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ONHYAVG ND(5)

ND(S)

MONTHLY HIGH~

ND(5)

ND(S)

MON1THLY LDI ND(S)

ND(S)

SEXCEEDED NO LIMIT NO UIMIT MO AVG 30=0 NO UIMIT NO UIMIT MO AVG 3DO0 SEXCEEDED D MAX 1000 D MAX 10K0 D

SEXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH. CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 5 FACILITY LD.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 /05 1 01 ENDING 04 /05 131 06 CA0003751 STATION EFFLUENT 0011 EFFLUENT 0OIJ ANALYSIS SUSPENDED SOLIDS SUSPENDED SOLIDS UNITS mg/tIstFLTR W 12ndRTR mIg/NET mgt11stFLTR mp12ndFLTR mgflNET SAIPL TYPE GRAB GRAB FREO.

MONTHLY MONTH.Y 2

3 4

5 6

7 8

9 1 0 1

1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 20 2 1 22 23 24 E ND(N) 25 26 27 28 29 30 IONTH-LY AVG NO ND(S)

MONHLtY lIOH DISCHARGE ND(S)

ONMY LW#

ND(S)

SEXCEEDED NOULMIT NO LIMIT MO AVG 30 z0 NO LIMIT NOULMIT MOAVG3O0=

ES EXCEEDED MAX 100 - O MAX 100 = 0 AES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DWRING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 St HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 6 FACILITY I.D.

YEAR I MO I DAY YEAR / MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 1 05 1 01 ENDING 04 1 051 31 06 CA0003751 STATION EFRLUENT001K EFRLUENTOOIL ANALYSIS SUSPENDED SOLIDS SUSPENDED SOLIDS LUNITS mgI 1 st FLTR mgt1 2nd RTR mg/i NET mg/I Is FLTR mg1 2nd FLTR mg/I NET SMIPL TYPE GRAB GRAB FREQ MUONTHY MONTiLY 2

3 4

5 6

7 A 1

ND(S) 8 9

10 II 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1

1 ND(S) 26 27 28 29 30 MNHY AVG NO ND(5)

MNHY HIGH DISCHARGE ND(S)

MNHY LOW ND(S)

SEXCEEDED NO UMIT NO UMIT MOAVG3OO NO LIMIT NO UMIT MOAVG30=O ESEXCEEDED D MAX 100 - 0 D MAX 100 - 0 ES EXCEEDED REMARKS:

NUM3ER OF SAMPLES TAKEN DURING THE DAY.

CA3FORN1A REGEONAL WATER 4UALITY SCHARGE SEN MONITORING REPORT PACIFIC GAS AND ELECTRIC CO.

CONTROLBOARO.

DIALO CANYON NUCLNAR POWER PLANT D ENTRAL COAST REGIONPO8X5 31 HIGUERA PL T

CAU SAN LUIS OBISPO, CA 93401 AAABAH AI 32 PAGE: (MM FACILITY.D.

YEAR / MO N

DAY YEAR / MO / DAY STATE CODE NPDES PERMIT 3 402003001 BEGINNING 04 / 05 / 01 ENDINQG 04/1 05 131 06 CA000375;1 2

3 t

E T C 1 PND()

5 26 6

8 9

10 1 2 1 3 1 4 15 1 5 1 6 1 7 1 9 20 40 121 22 23 24 25 ND(5) 26 27 28 29 30 MNHY AVG NO 20 ND(S)

MNHYHIOGH DISCHARGE 40NDS M 'NHLiOW ND(5)

ND(S)

IMESEXCEEDED NO UMIT NO UMIT MOAVG30=0 MOAVG6o=0 NO UMIT NO UMIT MOAVG30'0 TESEXCEEDED DMAX 100 = 0 D MAX 100 a 0 ES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH. CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (M) 8 FACIUTY l.D.

YEAR I MO I DAY YEAR I MO ) DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 I 05 101 ENDING 04 1 05 1 31 06 CA0003751 STATION EFFLUENT 002 EFRUENT 003 ANALYSIS SUSPENDED SOLIDS SUSPENDED SCLIDS UNITS mgf lstFLTR mg 12nd FLTR mg1 NET mgt 1st FLTR Wngf 2nd FLTR mfl NET SMPL TYPE GRAB GRAB FREQ MONTHLY MIONTHLY 2

3 4

2 2

2<

1 2

ND(5) 2 5

2<

1 2

ND(S) 5 6

7 8

9 10 1i 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MNHYAVG ND1(S)

ND(S)

MNHY HGH ND(S)

ND(S)

MONTHLY LOW ND(S)

ND(5)

IESEXCEEDED NO UMIT NO UMIT MOAVG30=0 NO UMIT NO UMIT MOAVG30=O ESEXCEEDED D MAX 100 =

O D MAX 100 O ES XCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

CAUFORNIA REGIONAL WATER DUALITY 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) 9 FACILITY 1.D.

YEAR / MO / DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 1 05 1 01 ENDING 04 / 05 1 31 06 CA0003751 STATION EFFLUENT 03 EFFLUENTOOIN EFFLUENT001 EFFLUENT X1 EFRUENT001 EFFLUENT N1 ANALYSIS SUSPENDED SOLDS SETTL SOUDS T CHROMIUM COPPER MCKEL ZINC UNITS mg/i 1st FLTR mg/i 2nd FLTR mni NET nm1 u5 t ugt ugi1 ug9/

SMPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB FREQ WEEKLY WHEN OOIN

& 001P I013 WEEKLY MONTHLY MONTHLY MONTHLY MONTHLY 2

3 4

5 ND(*.1) 6 7

8 9

10 I11 12 13 14 ND(0.1) 15 16 17 ND(10)

ND(10)

ND(10) 18 19 20 ND(0.1) 21 22 23 24 25 ND(O.1) 26 27 28 29 30 MONTHtY AVG NO ND(O.1)

ND(l 0)

ND(i0)

ND(1O)

ND(10)

MONTHLY HIGH DISCHARGE ND(0.1)

ND(10)

JONTlLY LOW ND(0.1)

ND(10)

ND(I0J ND(10)

ND(10)

S EXCEEDED NOUIMIT NOULMIT MO AVG 3D= 0 MO AVG 1.0=0 6M-MED 10 0 WMMED1OO0 6M-MED 30 0 6M-MED 70=0 SEXCEEDED DMAX100 = O DMAX3.0 = O DMAX40 = O DMAX50 =O DMAX100 = 0 DMAX380 = 0 S EXCEEDED IMAX100=0 I MAX 140 = 0 IMAX 260=O I MAX 990 = 0 REMARKS:

NUMBER OF SAMPLES TAKEN WFRING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH. CALIF 93424 SAN LUIS ORISPO, CA 93401 PAGE: (_) I FACILITY LD.

YEAR / MO I DAY YEAR I MO I DAY STATE COOE NPDES PERMIT #

3402003001 BEGINNING 04 / 05 1 01 ENDING 04 105131 06 CA0003751 STAfnON INRFUENT INFLUENT INRUENT INFLUENT EFRUENTO01 EFFLUENT 00ID EFFLUENTDO1G EFFLUENT0X1H ANALYSIS T CHROCU*A COPPER NCK(EL AAMONLA (N)

AMMONA (N)

OIL & GREASE OIL & GREASE OIL & GREASE UNTS ugt1 ugt1 ssgut ugn nol mgfn w

SMPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB GR GRAB FREC.

.IAP/JJJOCT JAtAP/JUIJOCT jAjAIALC JVAPIUWCT JIAAPIJtXJOCT JAIAPIAJJOCT JAAP/JLJOCT

.IAPIAPJAOCT 2

3 4

3 5

6 7

8 9

12 13 14 Is 1 6 17 ND(10)

NO(10)

ND(10) 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 MOTLAVG ND(10)

ND(10)

ND(lO)

-C 3

ONHIYGH ND(10)

ND(10)

C 3

ONhYLOW ND(l10 ND(10)

ND(10) 3 E)CEEDED NOUMIT NOU1MIT NOUMIT NOUMIT 6M-MED3060=0 MOAVG15=0 MOAVG15=0 MOAVG15=0 ES)EXCEDED D MAX 12240 - O DMAX2) = 0 DMAX2 = 0 DMAX20 = O S EXCEEDED I MAX 30600 = 0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

FLOW-WEIGHTED AVERAGE RESULT REPORTED.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH. CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE:(0) 2 FACILITY I.D.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 05 1 01 ENDING 04 1 05 1 31 06 CA0003751 STATION EFRUENTMW11 EFFLUENTOOIJ EFRUENT001K EFFRUENTXOIL EFFLUENTrOIM EFRUENTrQIP EFFLUENT W2 EFFLUENT 03 ANALYSIS OIL & GREASE IL 6 GREASE OIL & GREASE OIL & GREASE IL GREASE o0L & GREASE 1L & GREASE 0L & GREASE UNMTS Wml mf1 rMO mli mgt1 l

mwW m

SMPL TYPE GRAs GRAB GRAM GRAB GRAB GRAB GRAB GRAB FREO.

JNAPfJIUUCT JAAPIMAJCT AAPIJULIOCT JAlAPIJULOCT

.WAPIA/JCT JAAP/JIAICT

.JAPlJUIJOCT

.APIAXLLCT 2

3 4

5 6

7 B

9 10 1 1 1 2 1 3 14 15 1 6 17 1 8 1 9 20 21 22 23 24 3

25 c

3 26 27 28 29 30 MONTHLY AVG c

3

-c 3

MONTHLY lIGH 3

3 MONTHLY LOW 3

3 SEXCEEDED MOAVG15=O MOAVG15=0 MOAVG15=

MOAVG15tO MOAVG15=0 MOAVG15=0 MOAVG15=O MOAVG15=0 SEXCEEDED DMAX20 = O DMAX20=0 DMAX20=0 DMAX20 - O DMAX20 = O DMAX20 = O DMAX20= O DMAX20 = 0 ES xCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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) 3 FACILITY l.D.

YEAR I MO I DAY YEAR I MOI DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 04 / 05 101 ENDING 04 105 131 06 CA0003751 STATION EFFLUENT 004 EFFLUENT001 EFRUENTDOID EFFLUENT0O1H EFRUENT 001L EFRUENTOQIF ANALYSIS OIL A GREASE TOX CONCEN CADMIUU CADMIUM CADMIUM CADMIUM UNITS W1 TU ugh ugh ugh ugh SMPt1YPE GRAB GRA8 aTRLY comp TRLY COMP OTRLY COUP I WEEK COKIP FREOL JWAPhIJUOCT JAAPIJJJOCT JWAPIJJULCT JVAPJIlOCT JAIAPIJUOCT JAIAPIJ.AXCT 2

3 4

5 6

7 8

9 10 I

I7.

1 2 1 3 14 15 16 1I7 18 1 9 20 21 22 23 24 25 26 27 28 29 30 ONtYAVG HOTt IGH ONhYLOW SEXCEEDED MOAVG15=0 NOULMIT NOULMIT NO UMIT NOULMIT SE-MAR:

DMAX2 O S0 ESEXCEEDED 6M-MED 0.26-0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (Q) 4 FACIULTY LD.

YEAR I MO I DAY YEAR / MO I DAY STATE COOE NPDES PERMIT #

3 402003001 BEGINNING 04 1 05 /01 ENDING 04 / 05 / 31 06 CA0003751 STATION EFFLUENTOID EFFLUENTYt1H EFFLUENTO01L EFFLUENTOOIF EFRUENTOXID EFFLUENT0O11-H EFFLUENTDOOL EFFLUENTODIF ANALYSIS CHROMUJ T CHROMItUM T CHROMILIt T CHROMUIIMK COPPER COPPER COPPER COPPER UNITS u1 i ugvi ugh U911 wt ugt ugh ug/

SIIPL TYPE OTRLY COPAP OTRLY COMP OTRLY COJAP I WEEK COMP OTRLY CWP CTRLY COLP OTRLY COLP I WEEK COMP FREQ JAIAPIJU/OCT JAJAPIJUUOCT JAIAPIrULVCT JA/AP/JUWlOCT JWAPIAJOCT JAWAPIAJXOCT JA/AP/JIAJOCT JWAPltJOCT 2

3 4

5 6

7 8

9 10 I11 12 13 14 15 1 6 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 NIONTHLYAVG ONTHLY HIGH

%KXMY LOW IES EXCEEDED NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT RlOKSS EXCEEDED nsES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

vONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (l) 5 FACLITY I.D.

YEAR I MO ) DAY YEAR I MO I DAY STATE CODE NPDES PERMIT U 3402003001 BEGINNING 04 1 05 1 01 ENDING 04 1 05 1 31 06 CA0003751 STATION EFFLUENTOOID EFFmUENT0X1H EFFLUENTOQIL EFFLUENTOO1F EFLUENT001D EFFLUENTOOIH EFFLUENTOWIL EFFLUENTOOIF ANkYSIS LEAD LEAD LEAD LEAD MERCURY MERCURY MERCURY MERCURY UJTS ugt1 ugl usn ugh ug ug ugh ugil SLIPL TYPE QTRILY COCP GTRLY COMP QTRLY COMP I WEEK COMP amRLY COUP OTRLY COMP GTRLY COMP I WEEK COUP FREn JAAPIJU.ICT JANAP/JULJOCT JANAPIAXOCT JAPI/PJOCT JINAPIMLOCT JVWAP/1AUDCT JWJAPIJJLWCT JAJAPIAACT 2

3 4

5 6

7 a

9 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 30 UONTHLY AVG UONrHLY HIGH UONTHLY LOW sEXCEEDED NO LIMIT NO UMIT NO UMIT NO UMlT NO UMIT NOUMIT NO UMIT NO UMIT EXCEEDED EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

CONTROL BOARD DIA9LO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION P0 BOX 56 31 HIGUERA APOLA BEACH, CAIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (Q) 6 FACILITY l.D.

YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 / 05 01 ENDING 04 1 05 1 31 06 CA0003751 STATION EFFLUENT001D EFFLUENTIW1H EFFLUENTOCIL EFFLUENT001F EFFLUENT0X1D EFFLUENT0011 EFFWENTOOIL EFFLUENT00IF ANALYSIS NCKEL NICKEL NICKEL NICKEL SILVER SILVER SILVER SILVER UNITS ugtt ugt ugh ugh ughl ugt ug ugli SiPLTrYPE QTRLY CCOW' QTRLY COmP OTRLY COMP 1 WEEK COMP OTRLY CCtP OTRLY CObP QTRLY COUP I WEEK COMP FREO WAtAPJJULOCT JANAPlJAOCT JWAP/JUILCT JVAAP/JWUOCT JAIAPIJULOCT JWAPIAKCT

=

WAPI"JOCT JINAP/AIJfCT 2

3 4

5 6

7 8

9 to 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 UONTHLY AVG Y IGH YLDW ESEXCEEDED NOLUMIT NO UMIT NO UMIT NOLUMIT NO UMIT NO UMIT NO UMIT NO UMIT ES EXCEEDED ES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA A\\lILA BEACH, CAUF 93424 SAN LUIS OBISPO CA 93401 PAGE: (Q) 7 FACIUTY I.D.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04105 1 01 ENDING 04 105 131 06 CA0003751 STATION EFFLUENT0011)

EFFLUENTOQIH EFRULIENTOOIL EFRULENTDOIF ANALYSIS ZINC ZINC ZINC ZINC UNITS ugl/

ugl ugl ugm S1FPL TYPE OTRLY COMP OTF LY COEIP OTILY CObP I WNEEK COMP FRFEQ JwVAPIJULJCT WAPI.JJOCT JWAPIAJUIOCT

_AWAPIJUJOCT 2

3 4

5 6

7 8

9 10 I I 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MNHY AVG MONTHLY HIGH HLY LOW SEXCEEDED NO UMIT NO UMIT NO UMIT NO UMIT IES EXCEEDED TES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH. CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (Q) t FACILITY.D.

YEAR ) MO I DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 05 1 01 ENDING 04 / 05 1 31 06 CA0003751 STATION EFFLUENTOID EFFLUENT0X1F EFRUENT0011 EFFLUENTOXIL EFFLUENTOXIM ANALYSIS COPPER COPPER COPPER COPPER COPPER UNITS MOf wgfl mW 1

mgoi mgMl SMPL TYPE 24-HR COuP.

24-HR COUP.

24-HR COMP.

FREa METAL CWNG METAL WtNG METAL CLNG METAL CLNG METAL CLNG 2

3 4

5 6

7 10 I11 12 13 14 1 5 1 6 1 7 1 8 19 20 21 22 23 24 25 26 27 28 29 30 MONHILiY AVG NO NO NO NO NO MONTHY HIGH DISCHARGE DISCHARGE DISCHARGE DISCHARGE DISCHARGE MONTHLY LOW S EXCEEDED MOAVG1=0 MOAVG1=0 MOAVG1=0 MOAVG 1 0 MOAVGI=0 ESEXCEEDED DMAXI =0 DMAX1 =0 DMAXI =0 DMAX1 =0 DMAXI =0 ES ExCEEDED REMARXS:

NUMBER OF SAUPLES 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 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE:tQ) 9 FACILITY I.D.

YEAR / MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 05 1 01 ENDING 04 105 1 31 06 CA0003751 STATION EFFLUENTOID EFRUENT001F EFFLUENT0011 EFFLUENT00tL EFFLUENT 0tM ANALYSIS IRON RON IRON IRON RON UNITS mgi mgli mglI MO/

mg/I SMP.L TYPE 24-HR COUP.

244*1 COMP.

24-HR COMP 24-HR COUP.

24-HR COUP.

FREQ.

METAJ.aCLG METAL CLNG METAL CLNG METAL CLNG METAL CLNG 2

4 5

6 7

8 9

I

.D 1 2 13 1 4 15 1 6 1 7 1 8 19 20 21 22 23 24 25 26 27 28 29 30

'40NTLY AVG NO NO NO NO NO IONTHILY HIGH DISCHARGE DISCHARGE DISCHARGE DISCHARGE DISCHARGE UONTHLY LOW OEXCEEDED MOAVG1=0 MOAVG1=0 MOAVG1=0 MOAVG1=0 MOAVG1=O SEXCEEDED DMAX1 -O DMAXI =O DMAXI =0 DMAX1 =0 DMAX1 =0 S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DRNG THE DAY.

PRINCIPAL EXECUTIVE OFFICER I

GREGORYM.RUEGER

CALIFORNIA REGIONAL WATER OUAUITY 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: (A) 1 FACILITY I.D.

YEAR! MO /DAY YEAR ! MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 0 / 05 /01 ENDING 04 05 I31 06 CA0003751 STATION EFFLUENT 001 lNFLUENT EFFLUENT INFLUENT EFFLUENT 001 INFLUENT EFFLUENT 001 INFLUENT ANALYSIS TVT A MSENC ARSENIC CADmtUt CAOMUM LEM LEAD ZINC UNITS u91 ugn ugh ugl ugh ugh WIh ugf SMLt TYPE GRAB GRAB GRAB GRAB GRAB GRA8 GMAB GRAB FREQ OCTOBER OCTCOER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 1 0 1 2 1 3 1 4 1 5 1 6 1 7 ND(10) 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 MONTHLYAVG ND(10)

MONTHLY HIGH ND(10)

MONTHY LOW ND(10)

ES EEDED NO UMT NO UMT 6M-MED 30 = 0 NO LIMIT 6M-MED 10 = O NO UMIT 6M-MED 10 0 NO UMIT Es(XCEEoED DMAX150 = 0 DMAX20 = 0 DMAX40 = 0 MES EXCEEDED I MAX 400 =O I MAX 5-0 IMAX 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 PACIFIC GAS AND ELECTRIC CO.

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 S1 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A) 2 FACILITY ID.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 05 / 01 ENDING 04 / 05 /31 06 CAO0003751 STATION INFLUENT EFFLUENT 001 FLUENT EFFLUENT 001 INFLUENT EFFLUENT0I INFLUENT EFFLUENT 001 ANALYSIS MERCLRY MERCURY SILVER SILVER CYANIDE CYANIDE PHENOLC C1fP PHENOLC CMP UNITS ugh ug/I ugn gi g/

ugh gg ONCL) ug NONCL)

SLIPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB FREQ.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 1

0 2

3 4

5 6

7 8

9 10 1

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

%IWTHLtY AVG MONTHLY NIGM MONTHfLY LOW (ES EXCEEDED NO LIMIT 6M-MED 0.2=0 NO LIMT 6M-MED Z9=0 NO UMIT 6M-MED 30-0 NO LIMIT 6M-MED 150=0 IESEXCESOED DMAX0.8 =0

-DMAX13.6-0 DMAX100=0 DMAX610=0 TWS EtCEEDED IX2 = 0 IMAX 35- 0 IMAX 260=0 IMAX 1530=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 SI HIGUERA AVILA BEACH, CALIF 93424 SAN lUIS OBISPO. CA 93401 PAGE:(A) 3 FACILITY I.D.

YEAR IMO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 / 05 I 01 ENDING 04 / 05 / 31 06 CAOO03751 STATION INFLUENT EFFLUENT0X1 EFFLUENTCO1D EFRULENT0W1D EFFLUENTOSID EFFLUENT oos EFFLUENT YS ANALYSIS CHLOR PHENOL CHLOR PHENOL LITHILUM BORON HYDRAShNE OIL & GREASE OIL 0

GREASE UNITS WIh ugf mghl mgrt mgl mghl mgvi SkIPL TYPE GRAB GRAB GRAB GRAB GRAB GRAB GRAM FREO.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 20 2 1 22 23 24 25 26 27 28 29 30

?AONThLY AVG MONTILY HIGH MONTHLY LOW SEXCEEDED NOUMIT 6M-MED10=0 NOUMIT NOUMIT NOUMIT MOAVG15=0 MO AVGS1=0 S EXCEEDED DMAX 20=o DMAX 20=0 DMAX 20=0 SEXCEEDED IMAX 50=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 31 HIGUERA AIALA BEACH, CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A) 4 FACILUTY I.D.

YEAR/MOIDAY YEAR/MO/DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 04 / 05 / 01 ENDING 04 / 05 1 31 06 CA0003751 STATION EFFLUENT oo9 EFFLUENT013 EFRLtENTOIS EFFLUENTO16 EFFLUENT017 INFLUENT EFFmUENTOO1 ANALYSIS OIL 6 GREASE OIL b GREASE OIL & GREASE OL & GREASE OIL & GREASE PCFS PCs's UNITS MO tgt1 mgil VVI 11/I uw1 ugt1 SMIPL TYPE GRA3 GRA3 GRAB GRAB GRAB GRAB GRA FREQ OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 B

9 1 0 1 1 1 2 13 14 1 5 1 6 1 7 QO Is ot 1 9 20 21 22 23 24 25 26 27 28 I~ESEXCEEDED MOAVG 15=0 MOAVG 15=0 MO AVG 150 MOAVG 15=0 MOAVG 15=0 NOIJMT NOULMIT TMS EXCEEDED OMAX 20=0 DMAX 20=0 DMAXt 20=0 DMAX 20=0 DMAX2O=0 fES EXCEEDED 2R N

30AK:

NME FSMLE AE UIGTEDY

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 91 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A) S FACILITY ID.

YEAR / MO / DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 05 /01 ENDING 04 / 05 /31 06 CA0003751 STATION EFFLUENTOO1N EFFLUENT 001 N

EFFLUENTDOIN EFFLUENTOIN EFFLUENTODIN EFFLUENTOCIN EFFLUENTO1N EFFLUENTOGIN ANALYSIS SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE UNITS MOISTURE TOT KJDL N AMMOMA N)

MRATE N TOT POSPHS pH OIL A GREASE BORON SIIPL TYPE mgrg Mkg mflog pH wt m9oo FREQ 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 I11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 30

'AONTILY AVG

'ONTHLY IGH VIONTHLY LOW ESEXCEEDED NO UMIT NO UMIT NO UMIT NO UMIT NO LMIT NO UMIT NO UMIT NO UMIT S EXCEEDED ES XCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DRING THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AiLA BEACH. CAUF 93424 SAN LUIS OFBISPO, CA 9340tF PAGE: (A) 6 FACIUTY I.D.

YEAR I MOI DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 05 / 01 ENDING 04 1 05 131 06 CA0003751 STATION EFFLUENTOIN EFFLUENTOOIN EFFLUENT001N EFFLUENT OIN EFFLUENTOO1N EFFLUENTOO1N EFFLUENTOXIN EFFLUENT0XIN ANALYSIS SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUOGE SLUDGE UMTS CADMUM COPPER CHROMIUM LEAD NICKEL MERCURY ZINC VOLUME SMPL TYPE 09 mgIg mgA9 mgA9 ffog mog MD~g bis FREQ.

GRB GRAB GRAB GRAB GRAB GRAB GRAB OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 1 0 1 2 13 14 1 5 16 17 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 MONTitY AVG MNHY HIGH MONTHLY LOW SEXCEEDED 1OXSTLC"0 10xSTLC=0 1OcSTLC=0 10XSTLC=O I0XSTLCO 10STLC=O 1OXSTLC=O SEXCEEDED 10 mgrr-4g 250 mg~g=0 50 mgikr-0 50 mg41g=o 200 mgV"g=O 2 mIp"g~

2500 mg4v =

TISEEXCEEDED TTLC>100=0 TTLC>2500=0 TTLC5oo=o0 rTL(>1000-O TrLC>2000=o TTLC>20=0 TTLmC500=0 REMARKS:

NUMBEROFSAMPLESTAKENDURJNGTHEDAY.

APPENDIX 4 DIABLO CANYON POWER PLANT Influent and Effluent Monitoring June 2004

CAUFORNIA REGIONAL WATER OUAUTY 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 PAGE: (M) 1 FACUTY I.D!

YEARIMOIDAY YEAR I MO I DAY STATE CODE NPDES PERMIT#

3 402003001 BEGINNING 04 1 06 1 01 ENDING 04 1 06/ 30 06 CA0003751 STATION INFLUENT EFFLLENT oo1 DELTATEMP EFFLUENT 01 INFLUENT EFFLUENT X1 EFFLUENT oiP EFFLUENT 002 ANALYSIS TEPEFRATURE TEMPERATURE TEMPERATURE FLOV pH pH pH pH UNTS DEGREES F

DEGREES F

MGO pH UNITS pH UNITS pH UNITS pH UNITS SMPL TYPE METERED METERED METERED RECORDED GRAB GRAB GRAB GRAB FREQ.

CONTINUOUS CONTINUOUS CONTINUOUS DAILY MONTHLY MONTHLY

')

MONTHLY MONTHLY 1

51.2 65.8 14.6 1891 2

51.0 65.8 14.8 1891 2

7.6 2

7.9 3

50.8 65.4 14.6 1891 4

51.0 65.9 14.9 1891 5

51.2 66.4 15.2 1891 6

51.9 67.7 15.8 1891 7

51.3 68.4 17.1 1891 8

50.7 66.7 16,0 2164 7.8 7.8 9

50.3 68.7 18.4 1976 10 50.1 69.2 19.1 1874 11 49.9 67.8 17.9 2231 12 49.9 65.9 16.0 2333 13 49.8 71.0 21.2 1874 14 49.8 71.3 21.5 1874 15 51.8 717 19.9 2129 16 53.1 72.1 19.0 2486 17 5Z8 7Z7 19.9 2486 18 53.2 73.3 20.1 2486 19 53.7 73.1 19.4 1966 20 53.4 72.8 19.4 1862 21 52.6 71.1 18.5 2148 22 52.6 71.9 19.3 2486 23 53.3 72.6 19.3 2486 24 53.0 72.3 19.3 2486 25 52.1 71.4 19.3 2486 26 50.9 70.2 19.3 2486 27 50.3 69.7 19!4 2486 28 521 71.5 19.4 2486 29 53.9 73.5 19.6 2486 30 55.3 74.7 19.4 2486 31 MONHLYAVG 51.8 70.0 17.7 2183 7.8 7.8 7.6 7.9 MONTHLY HIGH 55.3 74.7 21.5 2486 7.8 7.8 7.6 7.9 ONTHLYLOW 49.8 65.4 14.6 1862 7.8 7.8 7.6 7.9 ESEXCEEDED NO UMIT NO UMIT MAX 22 = 0 MAX 2760 =0 NOLUMIT NO UMIT NO UMIT NO UMIT EXCEEDED O

nME EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

- EXCEPT DURING DEMUSSEUNG.

-DAILYWHEN DISCHARGING CHEMICAL CLEANINGWASTES FROM DISCHARGES 001D. F. I. LAND/OR M.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH, CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) 2 FACIUTY LD.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 /06 101 ENDING 04 /06 / 30 06 CA0003751 STATION EFFLUENT 0C3 EFFLUENT 004 EFFLUENT CWN EFFLUENTC0tP EFRUENT C03 EFFLuENTC0IF EFFLUENT DCI EFFLUENT X1 ANALYSIS pH pH OIL I GREASE OIL & GREASE OIL

& GREASE OIL & GREASE T CHLOR RES CHLORINE USED UNITS pH UNTS pH UNITS mgI nigA m

f uMg bs/day SMPL TYPE GRAB GRAB COJPOSITE GRAB GRAB GRAB GRAB RECORDED FREQ MONTHLY MONTHLY WEEKLY WEEKLY M)

WEEKLY (I

MONTHLY 2 pn CYCLE MONTHLY 1

3 12 3X1 302 2

7.9 12 28 302 3

3 ND(5) 12 29 302 4

7.8 12 26 302 5

12 28 302 6

12 29 302 7

12 26 310 8

12 26 300 9

12 1 8 317 10 3

ND(5) 12 22 317 11 12 61 332 12 12 32 384 13 1 2 22 317 14 12 24 317 15 12 20 358 16 3

ND(5) 12 1

30 461 17 12 26 490 18 12 24 446 19 12 14 403 20 22<

13 403 21 12 20 449 22 1 2 14 526 23 3

ND(5) 12 <

10 511 24 12 14 504 25 12 15 482 26 12 15 461 27 12 17 462 28 1 2 13 461 29 12 <

1 0 475 30 12 1E I 0 497 UONTHLYAVG 7.8 7.9 ND(S)

NO NO 3

20 393 M~ONTHLY HGH1 7.8 7.9 ND(S)

DISCHARGE DISCHARGE 3

61 526 MONTHLY LOW 7.8 7.9 ND(S) 3 c

7 300 ESEXEEDED NO UMIT NOULMIT MOAVG15=D MOAVG15=0 MOAVG`15-0 MO AVG 15 z0 1 MAX 206 0 NOULMIT EEXCEEDED D MAX 20 =0 D MAX 20 z0 DMAX20=0 DMAX20=0 ES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

WHEN001N IS DISCHARGINGTO001P.

-WHEN 001P IS DISCHARGING TO 003.

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, CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) 3 FACILITY ID.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 06 / 01 ENDING 04 / 06 / 30 06 CA0003751 STATION EFFOOlN=>003 EFFOXD1N=03 EFFLUENT 1ID EFFLUENTOXIF ANALYSIS TOTL COUFDRM FECAL COLIFOsM SUSPENDED S9LIDS SUSPENDED SOULDS UNITS Mlmc10" MPw10oBd ns1 IsIFLTR mgn 2ndfLTR ng NET ngt IstFLTR mgn 2ndflTR ngf NET SMPL TYPE GRAB GRAB GRAB GRwB FREQ.

4 ThESANEEK 4 TIMESNWEEK MONTHLY MONTHLY 2

1 0 2

3 2

7 2

3 4

5 6

7 2

ND()5 8

9 I

ND(S)

I 0 2

56 2 <

1 2

56 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 20 21 22 23 24 2

25 2

25 25 2

1 9 2-1 9 26 27 28 29 30

\\ONTHY AVG NO NO i

%NHLYIGH DISCHARGE DISCHARGE 60 7

ONHYLOW ND(S) 7 MEEXCEEDED 80% SMPLS1lK MEAN>200=

NO UMIT NO UMIT MOAVG3Oz0 NOULMIT NOULMIT MOAVG30=0 ES EXCEEDED 90 %SMPLS.400 DMAXIOO=0 D MAX 100= 0 MESEXCEEDED IMAX >10K REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

- FLOW-WEIGHTED AVERAGES REPORTED.

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: (M) 4 FACILITY I.D.

YEAR I MO I DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 06 1 01 ENDING 04 / 06 / 30 06 CA0003751 STATION EEFLUENTOOIG EFRUENT001H ANALYSIS SUSPENDED SOLDS SUSPENDED SCLIDS UNITS Mn/ Ist FLTR mgi 2nd FLTR WmNET mIs RFLTR mgt I2 nTR ngA NET SMPL TYPE GRAB GRAB FREQ.

MONTHLY MONTHLY 2

1 1

ND(5)

I ND(5) 3 4

5 6

7 8

10 1 2 13 14 15 1 6 17 1 8 19 20 21 22 23 24 25 26 27 28 29 30 ONHY AVG ND(5)

ND(5)

IOTHLY HGH ND(5)

ND(5)

MONTLY LOW ND(5)

ND(5)

SEXCEEDED NOLUMIT NOUMIT MO AVG 300 NO UMIT NOLUMIT MO AVG 3=0 EXCEEDED DMAX100= 0 DMAX100= 0 S EXCEEDED REMARKS:

NUMBER OFSAMPLES TAKEN DURNG 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 31 HIGUERA AVILA BEACH. CAUF 93424 SAN LUIS 0315PO, CA 93401 PAGE: (M) 5 FACIUTY I.D.

YEAR I MO I DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 / 06 / 01 ENDING 04 / 06 1 30 06 CA0003751 STATION EFFLUENT 0011 EFFLUENT 0OIJ ANALYSIS SUSPENDED SOUDS SUSPENDED SOLIDS UNITS mngl 1st FRTR mg/1 2nd FLTR mgn NET mgI 1st FLTR mgt1 2nd FRTR mg/I NET SMPL TYPE GRAB GRAB FREO.

MONTHLY MONIHLY 2

I ND(5) 3 4

5 6

7 1 0 I11 1 2 1 3 1 4 1 5 1 6 1 7 1 8 19 20 21 22 23 24 25 26 27 28 29 30 YAVG NO ND(5)

YHIGH DISCHARGE ND(5)

AtrtYLOW ND(S)

SEXCEEDED NOULMIT NOULMIT MOAVG30=D NOULMIT NOULMIT MOAVG30=0 IEXEEDMAX 100= 0 MAX 100 -0 EXCEEDED REMARKS:

NUMBER OF SAIPES TAKEN DURING THEDAY.

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 31 HIGUERA AV1LA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) 6 FACILITY ID.

YEAR I MO I DAY YEAR/M0 / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 / 06 / 01 ENDING 04 1 06 / 30 06 CA0003751 STATION EFLUENT001K EFFLUENTO1L ANALYSIS SUSPENDED SOIDS SUSPENDED SOUDS UNITS m/ I1sSFLTR mno 2nd FLTR mgf NET mgtl s FLTR mgt 2nd FLTR mgtt NET SMPI.

TYPE GRAB GRAB FREQ MONTHLY MONTHLY 2

2<

1 2<

1 2

ND(S) 3 4

5 6

7 B

9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 18 1 9 20 2 1 22 23 24 25 26 27 28 29 30 iflYAVG NO ND(S)

YIIGH DISCHARGE ND(S)

YOW/

ND(S)

TES EXCEEDED NO UMIT NO UMIT MOAVG30=0 NOUMIT NO UMIT MOAVG 30 = O IESEXCEEDED DMAX 100 a 0 DMAX100 = O S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFICER I GREGORY M. RUEGfR I

SIGNATURE OF AUTHORIZED AGENT DATE 1

(ly$ a "b C

7/20/2004 1

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE:(M) 7 FACILITY l.D.

YEAR I MO IDAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 06 1 01 ENDING 04 1 06 1 30 06 CA0003751 STATION EFFLUENT Y1M EFFLUENT OIN EFFLUENT CIP ANALYSIS SUSPENDED SOLIDS SUSPENDED SLDS SUSPENDED SOLIDS UNITS MO Ist FLTR l 2ndflTR W NET Mg m lstFLTR mg/I 2ndRTR mg/i NET SAIPL TYPE GRAB COMPOSITE GRAM FREQ.

MONTLY WEEKLY MONTLY 2

2 7

2I I 12 7

3 11 4

5 6

7 8

9 10 6

11 1 2 1 3 1 4 1 5 1 68 1 7 1 8 1 9 2 1 22 23 10 24 25 26 27 28 29 30 YAVG ND 9

7 HNIGH DISCHARGE I1 8

ONXYLOW 6

7 ES ECcEEDED NOULMIT NOULMIT MOAVG30=0 MOAVG6Oz0 NOULMIT NOULMIT MOAVG30=0 SEXCEEDED DMAX100 =0 D MAXICO = 0 S EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURNG THE DAY.

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

CONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 31 HIGUERA AVILA BEACH. CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (M) S FACIUTY l.D.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERIAT#

3402003001 BEGINNING 04 / 06101 ENDING 04/06/30 06 CA0003751 STATION EFFLUENT 002 EFFLUENT 003 ANALYSIS SUSPENDED SCLIDS SUSPENDED SOLIDS UNITS m9t IstFLTR m 2nd FLTR mwl NET mflstFPTR mwl 2nd FLTR maWi NET SMPL TYPE GRAB GRAB FREQ MONTHLY MONTILY 2

2 4

2 1

2<

5 3

4 2

2 2<

1 2

ND(S) 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 AON/THLYAVG 5

ND(5)

%KNHYHNGH I

ND(S)

MONTHLY LOW ND(5)

ND(5)

(ESEXCEEDED NO UMIT NO UMIT MOAVG30=0 NO UMIT NO UMIT MOAVG30=O ESXCEEDED D MAX100 = 0 DMAX100 = 0 ESEXCEEDED 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: (M) 9 FACILTY l.D.

YEAR I MO I DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 1 06 1 01 ENDING 04 / 06 1 30 06 CA0003751 STATION EFFLUtENT 003 EFFLUENTOOIN EFFLUENT OO EFFLUENT0Wl EFFLUENToot EPPLUENTOQ1 ANALYSIS SUSPENDED SOLIDS SErrL SOULDS T CHROtUM COPPER NICKEL ZNC UNITS Ingltst FLTR mwt 2d RFLTR mgfl NET nul uVh uglh ugl ug St tPL TYPE GRB ttGRB3 SULTP RSGRAB GRAB GRAB GRAB GRAB FREO.

WEEKLY tWEN OIN&

OIP

.'003 WEEKLY MONTHLY MONTHLY MONTHLY MONTHLY 2

3 ND(0.1) 4 5

6 7

B ND(10)

ND(10)

ND(10) 10 ND(0.1) 11 12 13 14 is 16 ND(0.1) 17 Is 19 20 21 22 23 NDOD.l) 24 25 26 27 28 29 30 31-AONTHLY AVG NO ND(0.1)

ND(10)

MON4THLY HIGH DISCHARGE ND(0.1)

ND(10)

ND(l0)

MONTHLY LOW ND(0.1)

ND(lO)

ND(10)

ESEXCEEDED NO UMIIT NO UMIT MOAVG30s MOAVG1.0=0 6M-MED 10 =0 6M-MED10=0 6M-MED 30 =0 6M-MED 70=0 ESEXCEEDED DMAXI00 %

0 DMAX3.0 - 0 DMAX40 - O DMAX50 m O

DMAX100 DMAX380

=

O ESEXCEEDED IMAX100=0 IMAX140=0 IMAX260=0 IMAX990=0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER OUAUTY 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: (O) I FACIUTY I.D.

YEAR / MO / DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 06 1 01 ENDING 04 1 06 1 30 06 CA0003751 STATION INFLUENT WFLUENT IWRLUENT IWLUENT EFFLUENT00I EFFLUENToomI EFFLUENT 0IG EFFLUENT001H ANALYSIS T CHRROMJIU COPPER MCKEL AMNIA (N)

AMMOIOA (N

OIL & GREASE OIL & GREASE OIL & GREASE UNITS uwt uw 1 uo ugh ugh mgri m

mgf SMP lTYPE GRAB GRAS GR GRAB GRAB GRAB GRAB GRAB FREQ.

JV/APIJUOCTCT TIALOCT JIAPJIT JA/APIALVCT lWAPF/AOCT JAPfJJuLOCT JAIAPJJULFOCT JAIAPIJAJOCT 2

3 4

5 6

7 8

ND(10)

NO(10)

ND(10) 9 10 11 12 1 3 14 15 16

`17 18 19 20 21 22 23 24 25 26 27 28 29 30 MONTHLYAVG ND(10)

ND(l0)

NGTHE DA

ONTHLYW-IGH ND(10)

ND(R0)

ND(1O)

MONHnLY LOW No(10)

ND(I0)

ND1o)

IEXSCEEDED NOULMIT NO UMI NOULMIT NOULMIT 6M-MED3D60=0 MOAVG15z0 MOAVG15-0 MOAVGI5-0 IESXCEEDED D MAXI12240 =O D MAX 20O=0 DMAX20 =0 D MAX 20= 0 EXCEEDED I MAX 30600 =0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THEDAY.

-FLOW-WEIG4HTED AVERAGE RESULT REPORTED.

CAUFORNIA 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 AV1LA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE (Q) 2 FACIUTY I.D.

YEAR / MO / DAY YEAR I MO / DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 04 106 1 01 ENDING 04 106130 06 CA0003751 STATION EFFLUENTrW11 EFFLUENTOXIJ EFFLUENTWOIK EFFLUENT W7L

. EFFLUENT D1M EFFLUENT007P EFFLUENT 02 EFFLUENT 03 ANALYSIS OIL A GREASE OIL & GREASE OIL & GREASE OIL & GREASE OIL & GREASE OIL & GREASE OIL & GREASE OIL

& GREASE UNITS MO WI mg/I imm7m mgvI m

igli g

SMPL TYPE GRAB GRA3 GRAB GRAB GRAB GRAB GRAB GRAB FREQ JAIAPIJUOCT

.AP)/JJOCT JNAPIJUUOCT JWAPIAJOC7 JAIAPIAXUOCT NAPJIJOCT NAPIAX)OCT NAAPIAXOCT 2

3 4

5 6

7 8

9 1 0 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 ONTHLY AVG MONTHLY HIGH MONTHLY LOW EXCEEDED MOAVG15=0 MOAVG15-0 MOAVG15=0 MOAVG15=0 MOAVG15=0 MOAVG15=0 MOAVG15=0 MOAVG15=0 ESEXCEEDED DMAX20=0 OMAX20-0 DMAX20=0 ODkX20O=

O DMAX2O=0 DMAX20 4 0 DMAX20-0 DMAX20 = O S EXCEEDED 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 vENTRAL COAST REGION PO BOX 56 81 HIGUERA AVILA BEACH, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (Q) 3 FACUUTY I.D.

YEAR/MO I DAY YEAR / MO / DAY STATE CODE NPDES PERMIT #

3402003001 3EGINNING 04 1 06 /01 ENDING 04 /06 /30 06 CA0003751 STATION EFFLUENT 004 EFFLUENTO01 EFRUENTOWID EFFLUENT001H EFFLUENTOOIL EFFLUENTOOIF ANALYSIS OIL S GREASE TDX CONCEN CADMIUM CADMIUM CADULN CADvNUM UNITS m/1 TU u91t utw ugI ugn SMPL TYPE GRAB GRAB OTRLY COMP OTY COAP OTRLY COMP 1 WEEK COUP FREQ JWAPIJJLPOCT JAJAPIAPJ CT WNAPIXLUOCT JIAAPIAJUOCT JIAPIJULOCT JW.JAPIJOCT 2

3 4

8 9

10 I

II 1I 11 1 2 13 1 4 15 16 1 7 20 21 22 23 24 25 26 27 28 29 30 JMOTHLY AVG AONITHLY MIGH MONTHLY LOW EXC(EEDED MOAVG15-0 NOULMIT NOULMIT NOULMIT NO LMI EXS:CEEDED DMAX2 O 0

EXCEEDED 6M-MED 0.26=0 REMAARKS:

NUMEEROF SAMPLES TA(EN DURING THEDAY.

CALIFORNIA REGIONAL WATER QUALITY OISCHARGE 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 O08SPO. CA 93401 PAGE: (0) 4 FACIULTY LD.

YEAR / MO / DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 / 06 / 01 ENDING 04 / 06 1 30 06 CA0003751 STATION EFFLUENTOOID EFFLUENT0M1H EFRUENTOOIL EFFLUENT0MIF EFRUENTOOID EFFLUENT001H EFRUENT001L EFFLUENTOXIF AN4LYSIS CHROPCzUM T CHROMIUM T CHROMUM T CHROFAUM COPPER COPPER COPPER COPPER UNITS vo ugsn u91 ugi ugh ug ugh ugl SMPL TYPE OTRLY COMP OTRLY COP OTRLY COMP I WEEK COUP OTRLY COMP OTRLY COtP OTRLY COMP I WEEK COUP FREQ.

JAIAPIJUJOCT JVAP/AMJOCT WAP/JUIACT JAfAPIJUIJOCT J4API/UIOCT JAAP/JL9OCT JWAP/Xlt£CT JAIAP/IJJOCT 2

3 4

5 6

7 B

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

NUMBER OF SAMPLES TAKEN DURING THE DAY.

CALIFORNIA REGIONAL WATER UALITY 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: (O) 5 FACILITY I.D.

YEARIMOIDAY YEAR/ MO/DAY STATE CODE NPOES PERMIT #

3 402003001 BEGINNING 04 / 06 /01 ENDING 04 / 06 30 06 CA0003751 STATION EFFmUENTD0ID EFFLUENTO01OH EFFLUENTXOIL EFFLUENTOXIF EFFLUENTOWID EFFLUENT0W1H EFFLuENT O0L EFFLUENT00IF ANAALYSIS LEAD LEAD LEAD LEAD MERCURY MERCURY MERCURY MERCURY UNITS utt ugl ugh ugh ut ugh tgh ugm SMPL TYPE CTRLY COMP QTRLY COMP QTRLY COMP I WEEK COUP QTRLY COUP OTRLY COUP OTRLY CIOMP 1 WEEK COMP FREQ JVAPIJLJlCT JWAPIAOCT JAJAP/IJDCT WJAPIMAJOCT JAIAPIMIOCT JA'APIJLUUOCT WAP/IlW=CT WAAPIAIJOCT 2

3 4

S 6

7 9

10 12 13 14 15 17 18 19 20 21 22.

23 24 25 26 27 28 29 30 31 MONTHLY AVG ONTHLY HIGH Y

ONTYLt LOW ESEXCEEDED NO LIMIT NO LIMIT NO UMIT NO UMIT NO ULM1T NO UMIT NO UMIT NO UMIT ES EXCEEDED EXCEEDED 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 S~AN LUIS OBISPO. CA 93401 PAGE: (Q) 6 FACILITY LD.

YEAR I MO I DAY YEAR / MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 06 1 01 ENDING 04 106 i 30 06 CAW00751 STATION EFFLUENT0W11D EFFLUENT001H EFFLUENTOWIL EFFLUENT 001F EFFLUENT001D EFFLUENT0W11H EFFLENT 001 L

EFFLUENT00IF ANALYSIS NICKEL NICKEL NCIEL NICKEL SILVER SILVER SILVER SILVER UNITS ugfu uh ugvt "g

ugt1 ugm u9/

ugn SM6,PL TrPE OTRLY COMP OTRLY COMP oTRLY COUP I WEEK COMP ORLY CCAP OTRLY COMP OTRLY COMP 1 WEEK COLP FREO.

.vAPliJ T

JAAPIjoCT JAIAP/JU.lCT WAP/JUIJOCT WAPIJLOCT JAfAPIJJUOCT WAAPAJUOCT JAJAPIJIJOCT 2

3 4

5 6

7 8

9 10 1

12 13 14 1 5 1 6 1 7 1 8 1 9 20 21 22 23 24 25 26 27 28 29 30 YAVG HIY GH ONTNLY LOW ES EXCEEDED NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT NO UMIT MES EXCEEDED ES EXCEEDED REMARXS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFICER I

GREGORY M. RUEGER

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, CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (Q) 7 FACILITY I.D.

YEAR / MO I DAY YEAR / MO I DAY STATE CODE NPDES PERMIT U 3402003001 BEGINNING 04 106 01 ENDING 04/06130 06 CA003751 STATION EFRUENTOID EFFLUENT001H EFFLUENT0011 EFFLUENT00IF ANALYSIS ZINC ZINC ZINC ZINC UNITS ugh ug/I ugh 1gh SMPLTYPE OTRLY CONSP CtRLY COMP CTRLY CObP I WEEK COMP FREQ.

Jh'APIJIlOC:T JAJAPIJJUVC JAIAPWIMOCT JAIAPIKJdLOCT 2

3 4

5 6

7 B

9 10 I11 12 13 14 15 16 17 1 8 19 20 21 22 23 24 25 26 27 28 29 30 MONTHLY AVG MONTHLY HIGH MONTHLY LOW S EXCEEDED NO UMIT NO UMIT NO UMIT NO UMIT IES EXCEEDED ISS EXCEEDED 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: (Q) S FACILITY L.0.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 1 06 101 ENDING 04 I 06 130 06 CA0003751 STATION EFFLUENT01D EFRUENTOIF EFFLUENT0GII EFFLUENTOOL EFFLUENTOOIM ANALYSIS COPPER COPPER COPPER COPPER COPPER UNFTS Wm MOI W

mgt/

owl SM'L TYPE 24+R COMP. 24-HR COMP.

24-HR CDMP.

24-HR COWP.

24-HR COMP.

FREQ METAL CLNG METAL CLNG METAL CWNG METAL CLNG METAL CLNG 2

3 4

6 7

8 9

10 12 1 3 1

4 1

5 1 6 17 1 8 1 9 20 2 1 22 23 24 25 26 27 28 29 30 POTYAVG NO NO NO NO NO HONTHYHGH DISCHARGE DISCHARGE DISCHARGE DISCHARGE DISCHARGE Y LOW ES EXCEEDED MOAVG1z0 MOAVG1=0 MOAVGI=O MOAVG 1= 0 MOAVG1 =0 ESEXCEEDED DMAXI =0 DMAXI =0 ODMAXI =-0 OMAX1 =0 DMAXI =0 IES EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURNG THE DAY.

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

_ONTROL BOARD DIABLO CANYON NUCLEAR POWER PLANT CENTRAL COAST REGION PO BOX 56 81 HIGUERA AV\\LA BEACH, CAUF 93424 SAN LULS OBISPO. CA 93401 PAGE: (Q) 9 FACILITY LD.

YEAR I MO I DAY YEAR / MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 /06 01 ENDING 04 /06/30 06 CA0003751 STATION EFmUENTO0SID EFFLUENTTOOItF EFFLUENT001 EFFLUENTOXIL EFFLUENTOXIU ANALYSIS IRON IRON IRON IRON IRON UNITS mfgi MO m

mgl/

mg/I SMPL TYPE 24-HR C0tP.

24-HR COhtP.

24-HR COMP.

24-HR COUP.

FREQ METAL CLNG METAL CLNG IETAL CIG METAL CLNG METAL CLN 2

3 4

5 6

7 8

S 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MONTHI.YAVG NO NO NO NO NO MONTHLY HGH ISCHARGE DISCHARGE DISCHARGE DISCHARGE DISCHARGE MONTHLY LOW SEXCEEDED MOAVG1=0 MOAVG1=O MOAVG1=0 MOAVGI10 MOAVG I= O SEXCEEDED DMAX1 =0 DMAX1 =0 DMAX1 =0 DMAX1 =-0 DMAX1 =0 CES EDED REMARKS:

S NUMBER OF SAMPLES TAKEN DURING THE DAY.

PRINCIPAL EXECUTIVE OFFCERl GREGORY M. RUtEGER

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 at HIGUERA AVILA BEACH. CAUF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A) 1 FACILITY l.D.

YEAR / MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 06 101 ENDING 04 1 06 130 06 CA0003751 STATION EFFLUENT00t INFLUENT EFFLUENT INFLUENT EFFLUENT 001 INFLUENT EFFLUENT DO1 INFLUENT ANALYSIS TITANIUM ARSENIC ARSENIC CADILbAI CADLUMt LEAD LEAD ZINC UNITS ug' t h

ut utgt uw tgt u

gI twt SIJPL TYPE GRAB GlAB GRAB GRAB GRAB GRAB GRAB GRAB FREQ.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 B

ND(10) 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ONLYAVG ND(I0)

IONTHLYHI4GH ND(10)

MNHY LOW ND(10)

ESEXCEEDED NO UMIT NOUMIT 6M-MED30=0 NOLUMIT 6WMED 10 0 NO UMIT 6M-MED 10 0 NO UMIT ESEXCEEDED DMAX150 = O DMAX20= 0 DMAX40 - o SEXCEEDED I MAX 400 = 0 I MAX 5-0 IMAX 100 -o REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

- INFLUENT ANALYSIS PERFORMED FOR COMPARISON TO EFFLUENTS.

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 31 HIGUERA AVILA BEACH. CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (A) 2 FACILITY I.D.

YEAR / MO I DAY YEAR I MO / DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 /06 01 ENDING 04 /06 130 06 CA0003751 STATION INFLLENT EFFLUENT 001 INFLUENT EFFLUENT X01 INFLUENT EFFLUENT 001 INFLUENT EFFLUENT 001 ANALYSIS MERCURY MERCURY SILVER SILVER CYANIDE CYANIDE PHENOLIC CMP PENOC CMP UNITS uVo1 uqfh uKA ug ugvi ugv1 uqM MNCL) ugl (NONCL)

SMPL TYPE GaB GRAB GRAB GRAM GRAB GRAB GRAB GRAB FREO.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 II 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MONTHLYAVG MONTHLY HIGH MONTHLY LOW S EXCEEDED NO UMIT 6M-MED 0.2=0 NO UMIT 6M-MED Z9=0

. NO UMIT 6M-MED 30=0 NO UMIT 6M-MED 150=0 SEXCEEDED DMAX0.8 =0 DMAX13.6=0 DMAX100=0 DMAX610=0 ES EXCEEDED IMAX 2 = 0 -O IMAX 35- 0 IMAX 260=0 IMAX 1530=0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

SIGNATURE OF AUTHORIZED AGENT DATE (B 1 C e

7/20/2004

CALIFORNIA REGIONAL WATER QUAULTY 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) 3 FACIUTY I.D.

YEAR/MO / DAY YEAR IMO/ DAY STATE CODE NPDES PERMIT#

3 402003001 BEGINNING 04 / 06 / 01 ENDING 04 1 06 30 06 CA0003751 STATION INFLUWE EFFLUENTOO1 EFFLUENT00CO EELUENTOID EFFLUENT 00tD EFRUENT 001 EFFLUENT0 00 ANALYSIS CHLOR PHENOL CHOR PHENOL LiTHUIIM BORON HYDRAZINE OIL 6 GREASE OIL 6 GREASE UNITS ugv uwf mgor mgt mgf mt1 m

SPLmTYPE GRAB GRAB GRAM GRAB GRAB GRAB GRAB FREQ.

OCTOEER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 B

9 1 0 1 1 12 13 14 15 1 6 17 18 19 20 21 22 23 24 25 26 27 28 29 30 MONTHLY AVG MONTHLY HIGH MONTHLY LOW ESEXCEEDED NO LIMIT 6M-MED 10-0 NO UMIT NO UMIT NO UMIT MOAVG 15=0 MOAVG15=0 UESDECEEDED DMAX 20=0 DMAX 20=0 DMAX 20=0 S EXCEEDED IMAX 50=0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

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, CALIF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (A) 4 FACIUTY I.D.

YEAR I MOI DAY YEAR/ MOI DAY STATE CODE NPDES PERMIT#

3402003001 BEGINNING 04 / 06 01 ENDING 04 1 06 130 06 CA0003751 STATION EFFLUENT oo9 EFFLUENT o03 EFFLUENToIs EFFRUENT016 EFFLUENT017 INRLUENT EFFLUENT0o0 ANALYSIS OIL s GREASE OtL A GREASE CIL & GREASE CIL & GREASE OtL S GREASE P0IS PCeS UNITS mgtI Mg mg/I MgO UV/1 u9 1 SMRPLTYE GRAB GRADG GRAB GRA GRAM GRAB GRAB FREQ.

OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 I11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 227 29 30 31 IONT1LY AVG YLOW SEXCEEDED MOAVG15=O MOAVG15-0 MOAVG15=0 MOAVG15=O MOAVG15>0 NOUMIT NOUMIT EXCEEDED OMAX 20=0 DMAX 20=0 DMAX 20=0 DMAX 20=0 DMAX20=0 EXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURNG THE DAY.

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, CAUF 93424 SAN LUIS OBISPO, CA 93401 PAGE: (A) 5 FACILITY ID.

YEAR t MO I DAY YEAR I MOI DAY STATE CODE NPDES PERMIT #

3 402003001 BEGINNING 04 1 06 01 ENDING 04 1 06 1 30 06 CA0003751 STATION EFFLUENT00IN EFFULENTO0IN EFFLUENTOIN EFFLUENT001N EFFLUENTO0IN EFFLUENTOXIN EFFLUENT 0IN EFFLUENTOOIN ANALYSIS SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE UNITS MOISTURE TOT KJLDL N

AMMONIA (N]

NITRATE (N)

TOT PHOSPHS pH OIL & GREASE BORON SMPL TYPE x

mg mkg mg&g noil pH i bk FREQ.

GRAB GRAB GRAB GRA GM GRA GRAB GRAB OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER OCTOBER 2

3 4

5 6

7 8

9 10 II 12 13 14 15 16 17 18 19 20 21 22.

23 24 25 26 27 28 29 30

%IONTHLY AVG MNHY NIGH MONTHLY LOW SEXCEEDED NO UIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO LIMIT NO UIMIT NO LIMIT S EXCEEDED SEXCEEDED REMARKS:

NUMBER OF SAMPLES TAKEN DURING THEDAY.

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 3t HIGUERA AVILA BEACH. CALIF 93424 SAN LUIS OBISPO. CA 93401 PAGE: (A) 6 FACILITY I.D.

YEAR I MO I DAY YEAR I MO I DAY STATE CODE NPDES PERMIT #

3402003001 BEGINNING 04 1 06 / 01 ENDING 04 1 06 130 06 CA0003751 STATION EFRUENTOXIN EFmUENTOOIN EFFLUENTOOIN EFFLUENTO0IN EFFLuENT0CtN EFFLUENT001N EFFLUENTOXIN EFFLUENTOXIN ANALYSIS SLUOGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE SLUDGE LNTS CADMIUM COPPER CHROItUM LEAD NICKEL MERCURY ZNC VOLUltE SIPL TYPE mFog mg mg2g ig mg&g mpg no Ions 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 I_

I_

I I

I I_

PAONTHLY AVG MIONTHL.Y HIGH UONTHLY LOW TMESEXCEEDED 10xSTLC-O 10xSTLC=0 10xSTLC=0 1OxSTLC=O 10xSTLC=o 10xSTLC=0 10xSTLC=0 S EXCEEDED 10 tmlfg/=O 250 mgIig=O 50 mog=0 50 nl&gkO 200 mg&g=0 2 Ir9/g=0 2500 mglkg=0 ESEXCEEDED TLC>100=O TTLC>2500=0 -

TTLC>500=0 TTLc>1ooo=o TTL2000=0 TTLC>20=0 TTLnC5000=0 REMARKS:

NUMBER OF SAMPLES TAKEN DURING THE DAY.

APPENDIX 5 DIABLO CANYON POWER PLANT Acute Bioassay April 8 - 12, 2004

EJL

°2H--t

.i>~

o1

j~

-CtCaY' I,

m e s ai.rZ*-~~

,l >aA

.QUATIC 1IASSAY &

ONSULTING LABORATORIES, INC.

TOXICITY TESTING

OCEANOGRAPHIC RESEARCH April 12, 2004 Ms. Raquel Harvey FGL Environmental P.O. Box 272 Santa Paula, CA 93061

Dear Ms. Harvey:

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 Maters as provided to us by Frederic R. Kopperdahl, Fish and Wildlife Water Pollution Control Laboratory, Department of Fish and Game.

Results were as follows:

CLIENT:

SAMPLE I.D.:

PROJECT No:

DATE RECEIVED:

ABC LAB. NO.:

Diablo Canyon Power Plant Discharge 001 SP 4083353 07 Apr - 04 FGLO404.049 ACUTE ABALONE SURVIVAL BIOASSAY LC50 TUa

=

100 % Survival in 100 % Sample

=

0.00 Yours very truly, Thomas (Tim) Mikel Laboratory Director 29 NORTH OLIVE STREET, VENTURA, CA 93001 * (805) 643-5621

-96 Hr Survival Start Date:

04/08/2004 Test ID: FGL0404049 Sample ID:

CAOOO0000 End Date:

04/12/2004 Lab ID:

CMBC Sample Type:

EFF3-Power Plant Sample Date: 04/0712004 Protocol: KOP 76-Kopperdahl Test Species:

HR-Haliotis rufescens Comments:

DCPP Discharge 001 SP4083353 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

100 1.0000 1.0000 1.4120 1.4120 1.4120 0.000 2

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 ICIO ICI 5 IC15 IC20 IC25 IC40 IC50

>1 UU

>100

>1 00

>100

>100 1.0 0.9' 0.8.

0.7.

'O 06 6

° 0.5.

0 0.4-0.3-0.2 -

0.1 -

U.U.

0 50 100 Dose %

150 Page 1 ToxCalc v5.0.23 Reviewed bye~

.96 Hr Survival

'Qtart nnfw End Date:

Sample Date:

Comments:

04/08/2004 Test ID: FGL0404049 04/1212004 Lab ID:

CMBC 04/07/2004 Protocol: KOP 76-Kopperdahl DCPP Discharge 001 SP4083353 Sample ID:

Sample Type:

Test Species:

CAQ00000Q EFF3-Power Plant HR-Haliotis rufescens Dose-Response Plot

2 0.6

,i 0.5

= 0.4 0.3 0.2 0.1 0

z Page 2 ToxCalc v5.0.23 Reviewed by

-96 Hr Survival Start Date:

04/08/2004 Test ID: FGL0404049 Sample ID:

CAOOOOOO0 End Date:

04/12/2004 Lab ID:

CAABC Sample Type:

EFF3-Power Plant Sample Date: 04107/2004 Protocol: KOP 76-Kopperdahl Test Species:

HR-Haliotis rufescens Comments:

DCPP Discharge 001 SP4083353

--- Auxiliary Data Summary Conc-%

Parameter N Control Temp C 100 N Control pH 100 N Control DO mg/L 100 N Control Salinity ppt 100 Mean Min 14.69 14.

14.50 14.

7.52 7.

7.51 7.

7.50 7.

7.63 7.

33.00 33.

0.00 0.

0.00 0.4 0.00 0.1 0.00 0.1 I

Max SD, CV%

N 50 15.00 0.17 2.83 10 30 14.90 0.22 3.24 10 40 7.60 0.08 3.73 10 40 7.60 0.07 3.62 10 30 7.80 0.13 4.87 10 40 7.80 0.13 4.79 10 00 33.00 0.00 0.00 10 00 33.00 0.00 0.00 10 00 0.00 0.00 0

00 0.00 0.00 0

D0 0.00 0.00 0

DO 0.00 0.00 0

N Control 100 N Control 100 Page 3 ToxCalc v5.0.23 Reviewed byF

APPENDIX 6 DIABLO CANYON POWER PLANT Chronic Bioassay April 8 -10, 2004

.4 7AQUATICI' A:BIOASSAY &

\\ CONSULTING LABORATORIES. INC.

TOXICITY TESTING

OCEANOGRAPHIC RESEARCH April 20, 2004 Ms. Raquel Harvey FGL Environmental P.O. Box 272 Santa Paula, CA 93060

Dear Ms. Harvey:

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 Estuarine Organisms, EPA-IR-95/136. Results were as follows:

CLIENT:

SAMPLE I.D.:

DATE RECEIVED:

ABC LAB. NO.:

FGL Environmental DCPPOO1 Discharge SP400402 07 Apr - 04 FGLO404.05 1 CHRONIC ABALONE LARVAL DEVELOPMENT BIOASSAY NOEC =

TUc

=

IC25

=

IC50

=

100.00 %

1.00

>100.00 %

Yours very truly, boratory Director 29 NORTH OLIVE STREET. VENTURA, CA 93001 * (805) 643-5621

Abalone Larval Development Test-Proportion Normal Start Date:

04/08/2004 Test ID: FGL0404049 Sample ID:

CAGOGOOGO End Date:

0411012004 Lab ID:

CAABC Sample Type:

EFFI-POTW Sample Date: 04/07/2004 Protocol: MBP 90-Anderson et al.

Test Species:

HR-Haliotis rufescens Comments:

Discharge 001 SP403353 Conc-%

1 2

3 4

5 N Control 1.0000 0.9000 0.9800 0.9300 0.9500 10 0.9300 0.8600 0.8400 0.6800 0.8500 18 0.7900 0.8400 0.8200 0.8100 0.9200 32 0.9400 0.8300 0.8700 0.6600 0.8100 56 0.7900 0.8800 0.8200 0.7800 0.9400 100 0.9600 0.9400 0.9200 0.8200 0.8800 Transform: Arcsin Square Root Conc-%/6 Mean N-Mean Mean Min Max CVh N

N Control 0.9520 1.0000 1.3694 1.2490 1.5208 7.825 5

10 0.8320 0.8739 1.1584 0.9695 1.3030 10.362 5

18 0.8360 0.8782 1.1581 1.0948 1.2840 6.402 5

32 0.8220 0.8634 1.1478 0.9483 1.3233 11.877 5

56 0.8420 0.8845 1.1701 1.0826 1.3233 8.591 5

100 0.9040 0.9496 1.2653 1.1326 1.3694 7.339 5

1-Tailed t-Stat Critical MSD 3.117 2.360 0.1597 3.122 2.360 0.1597 3.274 2.360 0.1597 2.945 2.360 0.1597 1.538 2.360 0.1597 Isotonic Mean N-Mean 0.9520 1.0000 0.8472 0.8899 0.8472 0.8899 0.8472 0.8899 0.8472 0.8899 0.8472 0.8899 Auxiliary Tests Shapiro-Wilk's Test indicates normal distribution (p > 0.01)

Bartlett's Test indicates equal variances (p = 0.91)

Hypothesis Test (1-tail, 0.05)

NOEC LOEC ChV Dunnett's Test 100

>100 Statistic Critical Skew Kurt 0.97193 0.9

-0.0544

-0.3207 1.55084 15.0863 TU MSDu MSDp MSB MSE F-Prob df 1

0.08482 0.08835 0.03927 0.01145 0.01769 5.24 Linear Interpolation (200 Resamples)

Point SD 95% CL(Exp)

Skew IC05*

4.5420 1.5733 2.9295 12.5668 1.9740 IC10*

9.0840 IC15

>100 1.0 IC20

>100 IC25

>100 0 9 IC40

>100 0.8-IC50

>100 0.7 I indicates IC estimate less than the lowest concentration 0 0.6 C 0.5 Qc 0.4 0

50 100 150 Dose %

Page I ToxCalc v5.0.23 Reviewed byt

Start Date:

End Date:

Sample Date:

Comments:

04/08/2004 04/10/2004 04/07/2004 Discharge 001 Abalone Larval Development Test-Proportion Normal Test ID:

FGL0404049 Sample ID:

CAOOOgOOO Lab ID:

CAABC Sample Type:

EFF1-POTW Protocol: MBP 90-Anderson et al.

Test Species:

HR-Haliotis rufescens SP403353 Dose-Response Plot I

0.9 0.8 aR 0.7 0 0.6 z.

og 0.5 o 0.4 0.

0 L 0.3 1-tail, 0.05 level of significance 0

0 C.z Page 2 ToxCalc v5.0.23 Reviewed by:

Abalone Larval Development Test-Proportion Normal Start Date:

04/08/2004 Test ID: FGLO404049 Sample ID:

CAOOOOOOO End Date:

04/10/2004 Lab ID:

CAABC Sample Type:

EFF1-POTW Sample Date: 04/07/2004 Protocol: MBP 90-Anderson et al.

Test Species:

HR-Haliotis rufescens Comments:

Discharge 001 SP403353 Conc-%

Parameter N Control Temp C 10 18 32 56 100 N Control pH 10 18 32 56 100 N Control DO 10 18 32 56 100 N Control Salinity ppt 10 18 32 56 100 Mean Mir 15.40 15 15.40 15.

15.40 15 15.40 15.

15.40 15, 15.40 15.

8.00 8.

8.10 8.

34.00 34.1 34.00 34.4 34.00 34.4 34.00 34.1 34.00 34.1 34.00 34.1 Auxiliary Data Summary I

Max SD CV%

N

.40 15.40 0.00 0.00 2

40 15.40 0.00 0.00 2

00 8.00 0.00 0.00 2

10 8.10 0.00 0.00 2

10 8.1 0 0.00 0.00 2

10 8.10 0.00 0.00 2

DO 34.00 0.00 0.00 2

0O 34.00 0.00 0.00 2

D0 34.00 0.00 0.00 2

Page 3 ToxCalc v5.0.23 Reviewed by*

DCL-2004-562, Second Quarter 2004 Report on Discharge Monitoring

Contents

Text

Title:

Dear Mr. Briggs:

Title:

Title:

SUMMARY

SUMMARY

Dear Ms. Harvey:

Dear Ms. Harvey:

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DCL-2004-562, Second Quarter 2004 Report on Discharge Monitoring

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Title:

Dear Mr. Briggs:

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Title:

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Dear Ms. Harvey:

Dear Ms. Harvey:

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