L-2002-514, 2001 Annual Report on Discharge Monitoring

From kanterella
Jump to navigation Jump to search
2001 Annual Report on Discharge Monitoring
ML020720348
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 02/28/2002
From: Oatley D
Pacific Gas & Electric Co
To:
Office of Nuclear Reactor Regulation, State of CA, Central Coast Regional Water Quality Control Bd
References
CA0003751, DCL-2002-514
Download: ML020720348 (39)
v • d • e


Text

Pacific Gas and Electric Company David H. Oatley Diablo Canyon Power Plant Vice President P0. Box 56 Diablo Canyon Operations Avila Beach, CA 93424 805.545.4350 Fax: 805.545.4234 Certified Return/Receipt Date: IFebruary 28, 2002 1 #7000-1530-0005-1017-4095 PG&E Letter DCL-2002-514 California Regional Water Quality Control Board Central Coast Region Attn: Monitoring and Reporting Review Section 81 Higuera Street, #200 San Luis. Obispo, CA 93401

Dear Mr. Briggs:

In accordance with Order 90-09, NPDES No. CA0003751, enclosed is the Annual Report for 2001 on Discharge Monitoring at Diablo Canyon Power Plant (Enclosure 1).

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

Title:

Supervisor, Environmental Operations Phone Number: 545-4439 WDRINPDES Order Number: Order No. 90-09, NPDES No. CA0003751 Type of Report: (check one) QUARTERLY ANNUAL 0 []

Quarter: (check one): 1 st 2nd 3 rd 4 th 0 El 0 0]

Year: 2001 (Annual Reports for DCPP are Jan-Dec)

Violation(s) (Place an X by the appropriate choice): [] No (there are no violations to Eo Yes report)

/ IC"y IV

PG&E Letter DCL-2002-514 Mr. Briggs February 28, 2002 Page 2 If Yes is marked (complete a-g):

a) Parameter(s) in Violation:

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

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

e) Dates of Violation(s)

(reference page of report/data sheet):

f) Explanation of Cause(s): (If "YES", see overview section of attached report)

(attach additional information as needed) g) Corrective Action(s): (If "YES", see overview section of attached report)

(attach additional information as needed)

PG&E Letter DCL-2002-514 Mr. Briggs February 28, 2002 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 Drew Squyres at (805) 545 - 4439.

Sincerely, 97/V'2 (e4ý&

Name: David H. Oatley

Title:

V.P. Diablo Canyon Operations 2002514/RDH/kmo

PG&E Letter DCL-2002-514 Mr. Briggs February 28, 2002 Page 4 cc: Michael Thomas, CCRWQCB 81 Higuera Street, Suite 200 San Luis Obispo, CA 93401 Debra Johnston California Department of Fish and Game 20 Lower Ragsdale, Suite 100 Monterey, California 93490 Regional Administrator, Region 9 U. S. Environmental Protection Agency 75 Hawthorne Street San Francisco, CA 94105 Attention: Carey Houk (W-5-3)

Resident Inspector, David Proulx U.S. Nuclear Regulatory Commission Diablo Canyon Power Plant 104/5 Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Dr., Suite 400 Arlington, TX 76011-8064 Director, Division of Reactor Projects U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Dr., Suite 400 Arlington, TX 76011-8064 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Enclosure

ENCLOSURE ANNUAL

SUMMARY

REPORT ON DISCHARGE MONITORING AT THE DIABLO CANYON POWER PLANT (NPDES NO. CA0003751) 2001

PG&E Letter No. DCL-2002-514 2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant TABLE OF CONTENTS PAGE OVERVIEW 1

SUMMARY

OF MONITORING PROGRAM 1 A. Monitoring of Plant Influent and Effluent 1

1. Monitoring Data 1
2. Facility Operating and Maintenance Manual 1
3. Laboratories Used to Monitor Compliance 1
4. Review of Compliance Record and Corrective Actions 2 B. Monitoring of Receiving Water 4
1. Ecological Studies at Diablo Canyon 4
2. Shell Debris Deposition and Foam Studies 4
3. In-Situ Bioassay 4 C. Acti-Brom Treatment Program 4 APPENDICES Appendix 1 NPDES Discharge Points Appendix 2 Tabular Summaries of Influent and Effluent Monitoring Appendix 3 Graphical Summaries of Influent and Effluent Monitoring Appendix 4- Summary of RWMP Monitoring for 2001 - Errata Replacement Pages

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant OVERVIEW A. This annual summary report follows the format used in quarterly monitoring reports. Analytical results below the respective Reporting Limit are plotted as "zero" value in accordance with ELAP guidance. During 2001, discharges occurred from all discharge paths except 0011, 001 K, 016, and 017.

B. California Ocean Plan Table B substances that were not analyzed for have not been added to the discharge stream. The substances listed in Table B in the 1990 Ocean Plan were each analyzed for and reported in the permit renewal application for Diablo Canyon Power Plant (DCPP) submitted in October 1994. There have been no changes in the activities conducted at the plant that would have significantly affected the results previously reported in the above referenced document.

SUMMARY

OF MONITORING PROGRAM A. Monitorinq of Plant Influent and Effluent

1. Monitorinq Data
a. Appendix 1 provides a list of the discharge path names for ease of reference. Appendix 2 contains monitoring data in tabular form. Appendix 3 contains monitoring data in graphical form.
b. Annual oil and grease analyses were performed in October on Stormwater/Yard Drain Discharges 005, 008, 009, 013, and 015. All results were less than 3 mg/I except for 015, which was 3mg/l. No discharges occurred from 016 and 017 during 2001 (Discharge 016 only drains a small area, approximately 10 feet X 8 feet in the bottom of a valve vault, quantities during rain events were inadequate for oil and grease samples and to discharge from this path; therefore no samples were available from 016).
c. The annual grab sample results of Discharge 001D, Liquid Radioactive Waste Treatment System, for lithium, boron and hydrazine, were 35 mg/I, 566 mg/I, and less than 10 mg/I, respectively.
2. Facility Operating and Maintenance Manual Pacific Gas and Electric Company (PG&E) maintains a multiple volume Plant Procedure Manual (manual) at DCPP that contains procedures used for operation and maintenance activities at the plant, including those activities that relate to wastewater handling, treatment, sampling, analysis and discharge.

Plant procedures are prepared and reviewed by DCPP Staff and approved by DCPP Management.

DCPP conducts biennial internal audits that review NPDES Plant procedures contained in the manual. Ongoing reviews of Plant procedures are conducted to assure that the manual remains valid and complete for the current facility.

3. Laboratories Used to Monitor Compliance
a. PG&E Chemistry Laboratory, DCPP, Avila Beach, California
b. Aquatic Bioassay Consultants, Ventura, California 1
c. FGL Analytical, Santa Paula, California
d. PG&E, Technological and Environmental Services, Geotechnical Laboratory, San Ramon, California
c. Creek Environmental, San Luis Obispo, California
d. Columbia Analytical Services, Kelso, Washington
4. Review of Compliance Record and .Corrective Actions
a. Circulating Water Pump Chlorination/Acti-Brom Monitoring The 2001 quarterly NPDES reports discuss incidents in which monitoring for some chlorination cycles was interrupted or when Ocean Plan limits, though not exceeded, could have been exceeded. Listed below is a summary of the incidents. A brief description of the cause of each incident is included.

The quarterly reports describe each of the incidents and corrective actions taken. Engineering evaluations (approved by the CCRWQCB 1/13/94; PG&E Letter No. DCL-94-002) for each incident are also described in the quarterly reports. The evaluations conclude that discharge chlorine limits were not exceeded.

Date Chlorination Cycle Monitoring Incidents Cause Corrective Action 1/17/01 Unit 1 0800 hrs and 1200 hrs injection cycles Ocean debris Flush sample lines.

not monitored. Monitor developed low flow. clogging sample Flow returned to lines normal.

4/17/01 Unit 1 monitor not operating. Loss of power to Electrical system monitor due to being replaced.

corrosion of the

_electrical system 5/8/01 Discharge monitor reading inaccurately Sample line loss Manipulated sample of flow to line valve. Flow monitor returned to normal.

b. Drains of Closed Cooling Water Systems PG&E received concurrence from the CCRWQCB in response to a letter dated July 19, 1995 (PG&E Letter DCL-95-156), to use the biocides glutaraldehyde and isothiazoline to control microbiological growth and corrosion in DCPP's closed cooling water systems. Any drainage from these systems is discharged at a flowrate such that the chronic toxicity level is below the "No Observable Effect Concentration" (NOEC) at NPDES Discharge 001. The volumes of cooling water drained in 2001 from the component cooling water (CCW), intake cooling water (ICW), and service cooling water (SCW) systems are presented below. The glutaraldehyde and isothiazoline concentrations are system concentrations, not concentrations discharged.

2

12/01/011 ICW Unit2 4000 183 8 maintenance.

Routine

c. PG&E injected sulfur hexafluoride (SF6) into DCPP's condensers to detect saltwater leaks on one occasion, while the unit was operating (circulating cooling flow through the condenser),

during 2001. CCRWQCB's Sorrel Marks concurred during conversations held in May 1996 that periodic use of SF6 would not increase DCPP's probability of exceeding NPDES permit limitations.

Number of Duration Injection Rate of SF6 Date Injections (sec) (Standard Cubic Feet per Minute) 6/21/01 5 30 10

d. April On 4/11/01, the result from analysis of the 001 monthly copper sample (taken 4/4/01) was 59ppb. An additional sample was collected on 4/11/01 that resulted in a copper concentration for monthly copper at 001 below the 1Oppb Reporting Limit. After a review of the Plant activities, analytical technique, sampling technique, and sample point, it was determined that the 59ppb copper result was most likely due to a metal contaminated sample. Small corroded metal parts attached to the sample point appear to have caused the sample contamination.

The corroded metal sources were removed and replaced with a non-metallic material to prevent future occurrence.

The RWQCB was notified by phone on 4/11/01, of the high copper result. At that time, permission was granted to include a statement regarding this issue in the quarterly NPDES report in lieu of submitting the 5-day report.

On 4/27/01 a malfunction in the automated decant mechanism occurred causing 3000 gallons of partially treated effluent to flow from 001N flowpath to the circulating cooling water. Repairs were performed to the automated mechanism on 4/27/01. During the 10am 4/27/01 decanting, when the malfunction occurred, the effluent appeared to be normal. Samples for settleable solids, TSS, and O&G were taken on 4/27/01 and 4/28/01 and analyzed. The analytical results confirmed the 001 N effluent was within NPDES limitations. Adjustments were made to the system equipment to minimize the potential for future occurrence.

The RWQCB staff was notified on 4/27/01 and on 5/11/01 allowed a statement to be added to the quarterly report describing the situation, actions taken, and steps to prevent recurrence in lieu of submitting a written report within 5 days of the event.

e. May During a physical tube cleaning of the Unit 2 Closed Cooling Water heat exchanger (2-1), on 5/7/01, using tube scrapers, the protective barrier that was installed to catch the scrapers failed.

The scrapers are small 1 inch diameter by 3 1 inch long carbon steel devices that are pushed through the tubes with water and compressed air. Approximately 550 scrapers went down the 2-1 discharge line. Over 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> was spent to retrieve the scrapers. All but 30 were recovered.

In a conversation with RWQCB staff on 5/9/01, staff agreed that the remaining scrapers do not pose a water quality concern if they are discharged and are not considered a non-compliance with the conditions of the NPDES permit. As requested by staff, this is a courtesy description of this activity.

3

B. Monitorinl of Receivina Water

1. Ecological Studies at Diablo Canyon Marine ecological monitoring was continued during 2001 under the Receiving Water Monitoring Program (RWMP) as requested in a letter from the Central Coast Regional Water Quality Control Board (CCRWQCB) dated December 9, 1998 and as detailed in a letter (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). Results of 2000 RWMP data were submitted to the CCRWQCB on April 27, 2001.

A table in Appendix 4 summarizes requirements and completed tasks for 2001.

2. Shell debris deposition and foam studies were completed and reported as part of the revised RWMP described above.
3. In Situ Bioassay Results of the Mussel Watch Program are 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 During 2001, DCPP continued its integrated Acti-Brom and "foul release coating" strategy to control macrofouling in the Circulating Water System (CWS). Acti-Brom is a sodium bromide solution with an added biodispersant that is used, in combination with sodium hypochlorite, to control settlement and growth of biofouling organisms. The program consists of six daily 20 minute injections (at four hour intervals) of a 1:1 molar ratio blend of Acti-Brom and sodium hypochlorite to all four of DCPP's intake conduits. Injection rates are adjusted to produce a nominal 200 ppb total residual oxidant (TRO) level in each treated conduit. The corresponding concentration measured at DCPP's discharge ranges from approximately 20 ppb to 60 ppb. In conjunction with the Acti-Brom treatment, untreated portions of the CWS were previously painted with a non-toxic "foul release coating" to help prevent attachment of fouling organisms.

Simultaneous hypochlorite and Acti-Brom treatment of both Unit 1 conduits continued six times daily throughout 2001 with brief interruptions. These treatment interruptions occurred in early June (conduit 1-1 only) due to a high flow alarm, in early July due to a controller failure, and in the first half of November when Unit 1 injections were terminated for a mid-month tunnel cleaning.

Hypochlorite and Acti-Brom treatment was resumed after the tunnel cleaning and continued through the rest of the year.

Simultaneous hypochlorite and Acti-Brom treatment of Unit 2 conduits continued six times daily through most of 2001. Near the end of January, conduit 2-2 injections were interrupted briefly for condenser cleaning. After the condenser cleaning, conduit 2-1 injections were changed to twice daily hypochlorite injections for microfouling control, while conduit 2-2 resumed the simultaneous hypochlorite and Acti-Brom treatment schedule. All Unit 2 injections were terminated near the end of April in preparation for the 2R10 refueling outage. The simultaneous hypochlorite and Acti-Brom treatment schedule was resumed near the end of May for each Unit 2 conduit when the associated circulating water pump was returned to service. This treatment schedule continued through the remainder of the year with brief interruptions in early June (conduit 2-1 only) due to a high flow alarm, in early July due to a controller failure, and in early November for line maintenance.

4

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 TABULAR SUMMARIES OF INFLUENT AND EFFLUENT MONITORING

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 TEMPERATURE (DEG F) FLOW (MGD)

INFLUENT EFFLUENT DELTA T Month high low avp high low avg high avv high low avp JAN 56.0 53.2 54.9 75.3 61.8 73.4 19.8 18.5 2503 2087 2490 FEB 54.0 51.2 52.9 73.3 70.5 72.2 19.4 19.3 2503 2503 2503 MAR 54.9 49.2 52.8 74.1 68.5 72.1 19.5 19.3 2503 2503 2503 APR 51.7 48.6 49.8 -71.0 66.5 69.1 19.5 19.3 2486 1239 2398 MAY 54.9 49.1 52.3 74.5 68.5 71.1 20.9 18.9 2486 1239 1525 JUN 60.2 49.6 53.9 77.8 69.0 72.8 20.8 18.9 2486 2486 2486 JUL 56.2 51.9 53.9 75.3 71.0 73.0 19.3 19.1 2486 2486 2486 AUG 56.6 51.5 54.0 75.5 70.2 73.1 19.4 19.1 2486 2486 2486 SEP 59.2 52.1 56.0 77.7 71.5 75.0 19.5 19.0 2486 1992 2461 OCT 58.9 54.4 56.8 78.2 73.3 76.1 19.7 19.3 2486 2486 2486 NOV 59.9 55.1 57.6 79.1 67.4 76.1 19.9 18.5 2486 1874 2414 DEC 55.8 51.5 53.4 75.0 68.0 72.4 19.4 19.0 2486 2486 2486 limit: 22 2760 The INFLUENT and EFFLUENT "high" and "low" values correspond to the highest and lowest daily average value for that month. The INFLUENT high and low does not necessarily correspond to the same day as the high and low for the EFFLUENT for that month. The "avg" for INFLUENT and EFFLUENT is the average for the entire month. The Monthly Delta T "high" is the highest Delta T for a day of the month based on daily average INFLUENT and EFFLUENT values. The "Avg" is calculated from INE and EFF monthly avg values.

DISCHARGE 001 TOTAL RESIDUAL TOTAL CHLORINE CHLORINE (daily max. ug/I) USED (lbs/day)

Month high low avP high low nvo JAN 52 20 34 780 446 609 FEB 59 17 35 537 432 487 MAR 70 23 40 528 417 490 APR 45 11 31 461 202 378 MAY 57 <10 19 648 187 339 JUN 66 <10 27 864 425 643 JUL 79 <10 31 864 410 787 AUG 50 <10 28 907 792 851 SEP 50 14 27 994 686 817 OCT 50 11 27 936 720 825 NOV 55 <10 33 794 331 612 DEC 87 29 48 749 605 694 Note that the residual chlorine limits in Permit CA0003751, Order 90-09 is a daily max of 200 ug/l and includes a time-based limit (per the Ocean Plan) which depends on the length of the respective chlorination cycle.

Page 1 of 6

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 METALS (monthly avg. ug/I)

CHROMIUM COPPER NICKEL *ZINC Month Influent Effluent Influent Effluent Influent Effluent Influent Effluent JAN ND(10) ND(10) ND(10) ND(10) ND(10) 15 13 ND(10)

FEB ND(10) ND(10) ND(10) ND(10) ND(10) 16 ND(10) ND(10)

MAR ND(10) ND(10) ND(10) ND(10) ND(10) 18 ND(10) ND(10)

APR ND(10) ND(10) ND(10) 29 ND(10) ND(10) ND(10) ND(10)

MAY ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) 11 ND(10)

JUN ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) ND(10)

JUL ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) 14 ND(10)

AUG ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) 15 ND(10)

SEP ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) II ND(10)

OCT ND(10) ND(10) ND(10) ND(10) ND(10) 16 ND(10) ND(10)

NOV ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) ND(10)

DEC ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) 16 ND(10) 6-month median limit: 10 10 - 30 - 70

  • Note: Influent zinc has been historically higher than effluent concentrations. To date the reason is not known.

DISCHARGE 001 VARIOUS ANNUAL ANALYSES (ug/l) 6-Mo. Med.

Effluent Parameter Influent Effluent Limit Arsenic 1.6 1.4 30 Cadmium 0.08 ND(0.06) 10 Cyanide ND(10) ND(10) 30 Lead 0.31 0.05 10 Mercury ND(0.001) ND(0.001) 0.2 Silver 0.17 ND(0.02) 2.9 Titanium - ND(5) none

  • Phenolic Cmpds ND(11.82) ND(I 1.82) 150 (non-chlorinated)

"**Phenolic Cmpds ND(3.36) ND(3.36) 10 (chlorinated)

      • PCB's ND(1.52) ND(1.59) none
  • Reporting limit IND (11.82)] shown is the sum of individual Reporting Limit's for 6 target compounds.

"**Reporting limit [ND (3.36)1 shown is the sum of individual Reporting Limit's for 5 target compounds.

      • Reporting limit [ND(1.52)] shown is the sum of individual Reporting Limit's for 7 target compounds.

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

Month Influent Effluent JAN ND(200) ND(200)

FEB MAR APR ND(200) ND(200)

MAY JUN JUL ND(200) ND(200)

AUG SEP OCT ND(200) ND(200)

NOV DEC 6-month median limit: 3060 Page2 of 6

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY pH (averages)

Discharge: 001 002 003 004 001P Month Influent Effluent JAN 8.2 8.1 8.0 8.2 8.2 7.9 FEB 8.0 8.0 8.0 8.0 8.0 7.7 MAR 8.0 8.0 8.0 8.0 8.0 7.8 APR 7.8 7.8 7.8 7.8 7.8 7.6 MAY 8.0 7.9 8.0 8.2 7.9 7.7 JUN 8.0 8.0 8.0 8.0 8.0 8.0 JUL 7.9 8.0 8.0 7.9 8.0 7.7 AUG 8.0 8.0 8.0 7.8 8.0 8.0 SEP 7.8 7.8 8.0 7.8 8.0 7.7 OCT 8.1 8.1 8.1 8.1 7.8 7.8 NOV 8.0 8.0 8.0 8.0 8.0 7.7 DEC 8.0 8.0 8.0 8.0 8.0 7.9 DISCHARGE 001F SUSPENDED GREASE & OIL (mg/I) SOLIDS (mg/I)

Month high avg high ave JAN <3 <3 7 7 FEB <3 <3 ND(5) ND(5)

MAR <3 <3 ND(5) ND(5)

APR <3 <3 ND(5) ND(S)

MAY <3 <3 14 12 JUN <3 <3 ND(5) ND(5)

JUL <3 <3 ND(5) ND(5)

AUG <3 <3 ND(5) ND(5)

SEP <3 <3 ND(5) ND(5)

OCT <3 <3 ND(5) ND(5)

NOV 4 <3 ND(5) ND(5)

DEC <3 <3 ND(5) ND(5) limit: 20 15 100 30 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average Limits.

DISCHARGE 001N (Monthly Summary of Weekly Data)

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

Month high low ave high low ave high low avg JAN 14 ND(5) <5 22 6 12 0.1 ND(0.1) <0.1 FEB 5 ND(5) <5 23 8 14 ND(0.1) ND(0.1) ND(0.1)

MAR 6 ND(5) <5 26 9 16 ND(0.1) ND(0.1) ND(0.1)

APR 8 ND(5) <5 34 8 15 ND(0.1) ND(0.1) ND(0.1)

MAY 5 ND(5) <5 38 21 30 ND(0.1) ND(0.1) ND(0.1)

JUN 6 ND(5) <5 17 ND(5) 10 ND(0.1) ND(0.1) ND(0.1)

JUL ND(5) ND(5) ND(5) 30 10 21 ND(0.1) ND(0.1) ND(0.1)

AUG ND(5) ND(5) ND(5) 22 8 15 ND(0.1) ND(0.1) ND(0.1)

SEP ND(5) ND(5) ND(5) 11 ND(5) 8 ND(0.1) ND(0.1) ND(0.1)

OCT 7 ND(5) <5 19 9 13 ND(0.1) ND(0.1) ND(0.1)

NOV ND(5) ND(5) ND(5) 23 8 15 ND(0.1) ND(0.1) ND(0.1)

DEC ND(5) ND(5) ND(5) 16 ND(5) 9 ND(0.1) ND(0.1) ND(0.1) limit: 20 - - 60 3.0 1.0 Note: "high" limits based upon Daily Maximum limits. "avg" limits based upon Monthly Average limits.

Page 3 of 6

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H 001L 001F Month Ae Cd Cr Cu Ag Cd Cr Cu Ae Cd Cr Cu Ag Cd Cr Cu JAN ND(10) ND(5) ND(10) 10 ND(10) ND(5) 20 110 ND(10) ND(5) ND(10) 20 ND(10) ND(5) ND(10) 10 FEB MAR APR ND(10) 9 ND(10) ND(10) ND(10) ND(5) <10 50 ND(10) ND(5) ND(10) ND(10) ND(10) ND(5) 10 20 MAY JUN JUL ND(10) ND(5) ND(I0) 10 ND(10) ND(5) <20 80 ND(10) ND(5) ND(10) <20 ND(10) ND(5) ND(10) 10 AUG SEP OCT ND(10) ND(5) ND(10) ND(10) ND(10) ND(5) 20 60 ND(10) ND(5) ND(10) ND(10) ND(10) ND(5) ND(10) ND(10)

NOV DEC limit: none Note: 001D, 001H and 001L analyses performed on quarterly composites. 001F analyses performed quarterly on a composite of weekly samples.

DISCHARGE 001D, H, L, F, METALS (avg. ug/l) 001D 001 H 001L 00IF Month Hg Ni Pb Zn HR Ni Pb Zn Hg Ni Pb Zn Hg Ni Pb Zn JAN 0.06 ND(10) ND(10) 80 0.04 30 <10 70 ND(0.01)ND(10) ND(10) ND(20) 0.02 20 ND(10) 70 FEB MAR APR ND(0.2) ND(10) 20 40 ND(0.2) 20 ND(500) 30 ND(0.2) ND(10) ND(10) ND(20) ND(0.2) 40 ND(10) 90 MAY JUN JUL 0.20 ND(10) ND(50) 120 ND(0.2) <20 ND(200) <40 0.4 ND(10) ND(10) <20 ND(0.2) ND(10) ND(10) 30 AUG SEP OCT ND(0.2) ND(10) ND(10) 40 ND(0.2) 20 ND(100) <20 ND(0.2) ND(10) ND(10) ND(20) ND(0.2) ND(10) ND(10) ND(20)

NOV DEC limit: none Note: 001D, 001H and 001L analyses performed on quarterly composites. 00IF analyses performed quarterly on a composite of weekly samples.

Page4 of 6

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Averages (mg/I)

Month 001D* 001G 001H 0011 001J 001K 001L 001M 001P 002 003 JAN 20 ND(5) ND(5) ND(5) 19 ND(5) ND(5) ND(5)

FEB <5 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 14 MAR <5 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5) 6 APR 11 ND(S) ND(S) ND(5) ND(5) ND(5) ND(5) 5 MAY 20 ND(5) ND(5) ND(5) ND(5) 7 ND(5) ND(5) ND(5)

JUN 7 ND(5) ND(5) ND(5) ND(5) 6 ND(5) ND(5)

JUL 5 ND(5) ND(5) ND(5) 5 ND(5) ND(5)

AUG <5 ND(5) ND(5) ND(5) 8 ND(5) ND(5)

SEP 12 5 ND(5) ND(5) 6 25 ND(5) ND(5)

OCT <5 ND(5) ND(5) ND(5) ND(5) ND(5) ND(5)

NOV 7 ND(5) ND(5) ND(5) 14 ND(5) ND(5) 6 DEC 7 ND(5) ND(5) ND(5) 15 ND(5) 8 Limit: 30 30 30 30 30 30 30 30 30 30

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

Note: No discharges occurred from 0011 and 001K during 2001.

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

QUARTERLY GREASE & OIL Averages by Month (mg/I)

Month 001D* 001G 00111 0011 001J 001K 001L 001M 001P 002 003 004 JAN <3 <3 <3 <3 <3 <3 <3 <3 <3 FEB <3 MAR <3 APR <3 <3 <3 <3 <3 <3 <3 <3 <3 MAY <3 <3 <3 JUN JUL <3 <3 <3 <3 <3 <3 <3 <3 AUG SEP <3 OCT <3 <3 <3 <3 <3 <3 <3 <3 NOV 3 <3 DEC Limit: 15 15 15 15 15 15 15 15 15 15 15 15

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

Note: No discharges occurred from 0011 and 001K during 2001.

Page 5 of 6

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY ACUTE AND CHRONIC TOXICITY TESTING (toxicity units, tua and tue)

ACUTE *CHRONIC Test 6-Month Test Month Result Median Result JAN 0.0 0.0 FEB 3.13 MAR APR 0.0 0.0 MAY 1.0 JUN JUL AUG 0.0 0.0 1.0 SEP OCT 0.0 0.0 1.0 NOV DEC 6-month median limit: 0.26 5.1

  • It should be noted that this parameter is monitored for the State Ocean Plan instead of the NPDES permit. A value of 1.0 indicates no chronic toxicity.

DISCHARGE 001N ANNUAL ANALYSES Sludge Parameter Result Limit Percent Moisture 94% None Total Kjeldahl Nitrogen 530 mg/kg None Ammonia (N) 66 mg/kg None Nitrate (N) ND(1) mg/kg None Total Phosphorus 170 mg/kg None pH 7.1 None Oil and Grease 100 mg/kg None Boron 1 mg/kg None Cadmium ND(0.05) mg/kg *10 X STLC Copper 2.8 mg/kg 10 X STLC Chromium ND(0.1) mg/kg 10 X STLC Lead ND(0.2) mg/kg 10 X STLC Nickel 0.1 mg/kg 10 X STLC Mercury ND(0.04) mg/kg 10 X STLC Zinc 4.3 mg/kg 10 X STLC Volume 0.59 tons None Note: Annual samples were collected in October

  • STLC = Soluble Threshold Limit Concentration Page 6 of 6

APPENDIX 3 GRAPHICAL SUMMARIES OF INFLUENT AND EFFLUENT MONITORING

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 INFLUENT Temperature("19 90.0 80.0 70.0 60.0 - U_---

S50.0 S40.0 *-* High I 30.0 SAverage 20.0 10.0 -

0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 DISCHARGE 001 EFFLUENT Temperature('F) 90.0 80.0 70.0 60.0 6 0 .0 ..............

50.0 U

I- High 40.0

- Low 30.0 - Average 20.0 10.0 0.0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Page I of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 EFFLUENT

  • Flow (MGD) 3000 -

2500 S2000

. 1500

-a-High 1' 1000 -

500 -

-a*-

A---Aerage Low Limit 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 DISCHARGE 001 EFFLUENT Monthly Delta T (°)9 23.0 22.0 21.0 20.0 S 19.0 - i h- -- ---....... .......

18.0

"--*"Average 17.0 16 .0 ... . . .

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Page 2 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Total Chlorine Residual 100 90 E0-High 80 Average 70 - Low 60 30 20 10 0-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

DISCHARGE 001 Total Chlorine Used 1200 1000 .High S 800"

" 600 S 400 200 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Page 3 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Copper(monthly average) 35 30 Influent 25 a Effuent 20 -- 4-Limit 15 10 5

0 A A AR Z A A A S A A D J.AN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

The 6-month median limit is plotted on this chart. See overview section for discussion of April result.

DISCHARGE 001 Nickel (monthly average) 35 30 41 0

-- i Influent 25 -

Effluent 20 - Limit j 15 10 5 --

0 E JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

The 6-month median limit is plotted on this chart.

Page4 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001 Zinc (monthly average) 80 70 60 -

50 i--lnfluent

'4 40

"-- - Effluent

-Limit 30-20 U

U 10 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

The 6-month median limit is plotted on this chart.

DISCHARGE 001 Chromium (monthly average) 12 100 8 -

-m- Influent

--- Effluent 0 Limit I 4-0 ft ft a a a

  • a a a a a a JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

The 6-month median limit is plotted on this chart.

Page 5 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant pH 8.3 8.2 8.1 8.0 7.9

- 7.8 7.7

-N- 001 lfaluent 7.6

- 001 Efflueni 7.5 002

-- 0--003 7.4 ) 004

-- 0o 00P 7.3 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: Several data points on this chart overlap.

Discharge 001 Ammonia (as N) 3500 3000 A A A A 2500 2000 a 1500 Influent and Effluent

- 6-Month Median Limit 1000 500 0 0 m - -

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 6 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001F Oil & Grease avg mg/l 25 20 15

-U-Sample Result 10 - Monthly Average Limit

- Daily Maximum Limit 5

0 ll llU Ul U U U Ul U U Un JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

DISCHARGE 001F Suspended Solids 120 - avg mg/I 100 0 80 -

  • --SampleResult SMonthly Average Limit S60- 4 Daily Maximum Limit 40 20 U

0 U U U U U U U U U JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero. When sample values were above the detection limit, the maximum values are plotted (January and May).

Page 7 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant

-- n-High DISCHARGE 001N -A-- Low Oil & Grease 25 Limit 20

- 15if X X W W W X X X X _X 61)

N 0-JAN Sm A

FEB A.

MAR m

APR MAY N%. A JUN U

SEP OCT NOV DEC JUL AUG 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

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

DISCHARGE 001N SuspendedSolids 70 60 50- --- High

  • Low 40 Average S30 Monthly Average Limit 20 1o6 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

DISCHARGE W0IN SealeableSolids 3.5 3 3 00-0 -- 0

-a-High 2.5 A Low

  • -0' Average 2.

E1.5 -

"---DailyMaximum Limit

-f-Monthly Average Limit I Pt 11 se 0.505 --

p 0 JAN p FEB p MAR APR MAYp p JUN p JUL p AUG p SEP OCTp p NOV p DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 8 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001D Quarterly Metals 12 10 U

U 8 U U

U Silver U ECadmiumn U

U U 1 Chromium

= 1Copper 4

2-JAN FEB MAR APR MAY JUN JULIm _AUG SEP OCT NOV DEC 2001 Note: The analyte was not _detected at or above the reporting limit for values plotted at zero.

I-DISCHARGE 001D QuarterlyMetals 140

!UNickel O -- IU Lead 12 UIZinc S 100 S8 0

. 60

. 4' 2'O JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 9 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 00IF 25 Quarterly Metals 0 Silver 1OCadmium 20 :lChromium

.[Copper

=r 15 10 5

0-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

DISCHARGE 001F Quarterly Metals 140 120 100

,[Mercury 80 E~ead l 60 40 20 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 10 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001H Quarterly Metals 120 100 I

80

%60 40 I I C padmium OChromium 20 0-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

DISCHARGE 001H QuarterlyMetals 80 70 N

60 50 b40 E1Mercury U Nickel N Lead 30 93 Zinc II I

El 20 10 0-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 11 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant DISCHARGE 001L QuarterlyMetals 25 20 15 U Silver I U Cadmium UIChromium 10 I Copper 5 -

0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

DISCHARGE 001L QuarterlyMetals 25 20 15 10 OMercury 12 Nickel ULead 5 - JSZinc 0JA JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 12 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant MONTHLY TOTAL SUSPENDED SOLIDS Average 35 25 - -OO1D N 001G 20 m

-40011H 15 E -

. O Monthly Average Limit 10 U 0 - -_ U_ _* -_ --- *_

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

MONTHLY TOTAL SUSPENDED SOLIDS Average 35 30 U 001J 25 - OO1L 20 001M E1 -- O-Monthly Average Limit 215 10 5

0 A a A A A a tA*t A A JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: Points on charts may overlap. The analyte was not detected at or above the reporting limit for values plotted at zero.

MONTHLY TOTAL SUSPENDED SOLIDS Average 35 30 25 001P

-A-002 20 --- *---003 E 15 O- Monthly Average Limit 10 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: Points on charts may overlap. The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 13 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant QUARTERLY OIL & GREASE Average 16 U -- U - m - m - m - m ------------

14 CO001D) 12 10 - =n00:G

~00 H

-- n Monthly Average Limit 6

4-2 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

QUARTERLY OIL & GREASE Average 16 m -- -- -- m - m - m - m - m - m ------

14 12 r---1001L 10 1-- 001M Monthly Average Limit 6

4 -

2 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

QUARTERLY OIL & GREASE Average 16 14 12 17001 P r---21 02 10 l003 8

E ý004 6 ,--m--Monthly Average Limit 4

2 0

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Note: The analyte was not detected at or above the reporting limit for values plotted at zero.

Page 14 of 15

2001 Annual Summary Report on Discharge Monitoring at the Diablo Canyon Power Plant ACUTE AND CHRONIC TOXICITY 6.0 -

5.0 1Chronic Results

= 4.0- 0 6-mo. Median Acute Limit A-Monthly Acute Results 3.0

-- Chronic Limit Z

2.0 1.0 0.0 0J.0 A-m JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2001 Page 15 of 15

APPENDIX 4

SUMMARY

OF RWMP MONITORING FOR 2001 RWMP 1st Survey 2nd Survey 3rd Survey 4th Survey Stations/ Completion Completion Completion Completion Surveys Stations/ Stations/ Stations/ Stations/

Study per Year Dates Dates Dates Dates Horizontal Band Transects 14/ 4x 14 /Feb 14 / Jun 14 /Sep 14 /Dec Vertical Band Transects 5 14x 5 / Mar 5 / Jun 5 / Sep 5 / Dec Benthic Stations

  • 8 /4x 8 /Apr 8/Jun 8 /Oct 8 /Jan 02 Fish Observation Transects 12 / 4x 12 / May 12 / Jul 12 / Oct 12 / Jan 02 Bull Kelp Census * / lx Oct Temperature Monitoring 24 / ** Jan-Mar Apr-Jun Jul-Sep Oct-Dec
  • Diablo Cove census
    • Temperature measured throughout the year at 20 minute intervals (14 intertidal and 10 subtidal stations).

ENCLOSURE2 ERRATA CONTAINING REPLACEMENT PAGES FOR SECOND QUARTER 2001 NPDES DISCHARGE MONITORING REPORTS FOR DIABLO CANYON POWER PLANT Please locate the reports listed in the Errata below and replace the incorrect pages with the corrected forms provided in this enclosure.

ERRATA: Second Quarter 2001 NPDES Discharge Monitoring Report, PG&E Letter DCL 2001-545, dated July 20, 2001. The replacement page for the following errata are attached:

May, Page (M)3: The monthly high and monthly low values were reversed for effluent 001F suspended solids.

Fourth Quarter 2001 NPDES Discharge Report, PG&E Letter DCL-2002- 504 dated January 17, 2002. A page for the following is attached:

Page 2 of the Chronic Abalone Development Bioassay: This page was not included in the chronic bioassay that was a part of this report.

Fourth Quarter 2001 NPDES Discharge, PG&E Letter DCL-2002-504 dated January 17, 2002. A replacement page for the following is attached.

Cover letter first page: The text near the top of this page has been revised to correctly show that this report is for the "Fourth Quarter" as indicated by the checked box.

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

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

3 402003001 BEGINNING 01/ 05 / 01 ENDING 01 / 05 / 31 06 CA0003751 STATION EFF 001N=>D03 EFFOIN=>003 EFFLUENTOOID EFFLUENT 001F ANALYSIS TOTL COLIFORMFECAL COLIFORM SUSPENDED SOLIDS SUSPENDED SOLIDS UNITS MPN/100nl MPNIIiOOd mg/i1stFLTR mg/l 2nd FLTR mg/I NET mg/11st FLTR mg/12nd FLTR mg/iNET SMPLTYPE GRAB GRAB GRAB GRAB FREO. 4 TIMESIWEEK 4 TIMESMWEEK MONTHLY MONTHLY 1 2 8 2 < 1 2 8 2 2 24 2 24 3 1 ND(5) 119 4 2 16 2 16 5 4 1 ND(5) 6 2 3 2 < 1 2 ND(5) 7 1 ND(5) 8 9 2 16 2 1 2 15 10 11 12 13 14 2 24 2 1 2 23 15 16 17 18 19 20 21 22 23 24 15 1 14 25 26 27 28 2 25 2 25 29 30 31 MONTHLY AVG NO NO 20 12 MONTHLY HIGH DISCHARGE DISCHARGE 25 "14 MONTHLY LOW ND(5) 9 TIMES EXCEEDED 80% SMPLS>IK MEAN>200= NO LIMIT NO LIMIT MO AVG 30 =0 NO LIMIT NO LIMIT MO AVG 30 = 0 rIMES EXCEEDED 90 % SMPLS>400 DMAX 100 = 0 DMAX 100 = 0 TIMES EXCEEDED I MAX >10K REMARKS: NUMBER OF SAMPLES TAKEN DURING THE DAY.

FLOW-WEIGHTED AVERAGES REPORTED.

Abalone Larval Development Test-Proportion Normal Start Date: 10/11/2001 Test ID: ABS-225 Sample ID: CAOOOOOOO End Date: 10/13/2001 Lab ID: CAABC Sample Type: ZNSO-Zinc sulfate Sample Date: 10/11/2001 Protocol: MBP 90-Anderson et al. Test Species: HR-Haliotis rufescens

'omments: Standard Toxicant Dose-Response Plot 1-tail, 0.05 level "Ii 0.7 of significance o 0.6 z

o 0.5 0 0.4

..0.3 0.2:

0.1 z

Page 2 ToxCalc v5.0.23 Reviewed

EUPacific Gas and Electric Company David H.Oatley Diablo Canyon Power Plant Vice President PO. Box 56 Diablo Canyon Operations Avila Beach, CA 93424 Date: PJanuary 17, 2002 I 805.545.4350 Fax: 805.545.4234 California Regional Water Quality Control Board Central Coast Region Attn: Monitoring and Reporting Review Section 81 Higuera Street, #200 San Luis Obispo, CA 93401

Dear Mr. Briggs:

In accordance with Order 90-09, NPDES No. CA0003751, enclosed is the Fourth Quarter 2001 Report on Discharge Monitoring at Diablo Canyon Power Plant (Enclosure 1).

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

Title:

Supervisor, Environmental Operations Phone Number: 545-4439 WDR/NPDES Order Number: Order No. 90-09, NPDES No. CA0003751 Type of Report: (check one) QUARTERLY ANNUAL 191 0 1St Quarter: (check one): 2nd 3 rd 4 th El 1:1 0l 19 Year: 2001 (Annual Reports for DCPP are Jan-Dec)

Violation(s) (Place an X by the appropriate choice): g] No (there are no violations to report) [] Yes If Yes is marked (complete a-g):

a) Parameter(s) in Violation:

Retrieved from "https://kanterella.com/w/index.php?title=L-2002-514,_2001_Annual_Report_on_Discharge_Monitoring&oldid=2710040"