CP-202200181, (CPNPP) - 2021 Annual Environmental Operating Report (Non-Radiological)

(CPNPP) - 2021 Annual Environmental Operating Report (Non-Radiological)

ML22117A140
Person / Time
Site:	Comanche Peak
Issue date:	04/27/2022
From:	Hicks J Luminant, Vistra Operations Company
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-202200181, TXX-22036
Download: ML22117A140 (10)

Text

m Jack C. Hicks Manager, Regulatory Affairs Comanche Peak Nuclear Power Plant (Vistra Operations Company LLC)

Luminant P.O. Box 1002 6322 North FM 56 Glen Rose, TX 76043 T 254 .897.6725 CP-202200181 TXX-22036 April 27, 2022 U. S. Nuclear Regulatory Commission Ref CPNPPEPP A TIN: Document Control Desk Washington, DC 20555-0001

Subject:

Comanche Peak Nuclear Power Plant (CPNPP)

Docket Nos. 50-445 and 50-446 2021 Annual Environmental Operating Report (Non-Radiological)

Dear Sir or Madam:

Vistra Operations Company LLC ("Vistra OpCo") hereby submits the Comanche Peak Nuclear Power Plant (CPNPP) 2021 Annual Environmental Operating Report (Non-Radiological). The attached report is provided pursuant to Appendix B to the CPNPP Units 1 and 2 Facility Operating License Nos. NPF-87 & NPF-89 (Environmental Protection Plan). The report covers the period from January 1, 2021 to December 31, 2021.

This communication contains no new commitments regarding CPNPP Units 1 and 2.

Should you have any questions, please contact Jim Barnette at (254) 897-5866 or James.barnette@luminant.com.

Sincerely,

Attachment:

CPNPP 2021 Annual Environmental Operating Report (Non-Radiological) (9 pages) c (email) - Scott Morris, Region IV [Scott.Morris@nrc.gov]

Dennis Galvin, NRR [Dennis.Galvin@nrc.gov]

John Ellegood, Senior Resident Inspector, CPNPP Uohn.Ellegood@nrc.gov]

Neil Day, Resident Inspector, CPNPP [Neil.Day@nrc.gov]

Attachment to TXX-22036 Page 1 of9 VISTRA OPERATIONS COMPANY, LLC COMANCHE PEAK NUCLEAR POWER PLANT UNITS 1 & 2 2021 ANNUAL ENVIRONMENTAL OPERATING REPORT (NON-RADIOLOGICAL)

FACILITY OPERATING LICENSE NOs. NPF-87 & 89

Attachment to TXX-22036 Page 2 of9 I. INTRODUCTION This report describes implementation of the Environmental Protection Plan (EPP) for the calendar year 2021 as required by Appendix B to Facility Operating License Nos. NPF-87 & 89 for Comanche Peak Nuclear Power Plant (CPNPP) for Units 1 & 2.

During 2021, the CPNPP Non-Radiological Environmental Monitoring Program was effective in implementing and monitoring all CPNPP environmental regulatory commitments. Program effectiveness in 2021 was substantiated by both Environmental Services (ES) - Corporate audits and Texas Commission on Environmental Quality (TCEQ) inspections concerning the CPNPP Environmental program.

II. SCOPE Section 5.4.1 of the EPP requires that CPNPP submit to the NRC an Annual Environmental Operating Report that shall address the following environmental protection activities:

A. Summaries and analyses of the results of the environmental protection activities required by Section 4.2 of the EPP, including a comparison with related preoperational studies, operational controls (as appropriate), and previous non-radiological environmental monitoring reports, and an assessment of the observed impacts of plant operation on the environment. If harmful effects or evidence of trends toward irreversible damage to the environment are observed, a detailed analysis of the data and a proposed course of mitigating actions are required. Section 4.2 of the EPP pertains to results from:

1. Groundwater levels and station water use monitoring.

2. Water treatment facility outages impact assessment and reporting.

B. The report shall also include:

1. A list of EPP non-compliances and the associated corrective actions.

2. A list of all changes in station design and operation, tests, and experiments made in accordance with Subsection 3.1 of the EPP which involved a potentially significant unreviewed environmental question.

3. A list of non-routine reports submitted in accordance with Subsection 5.4.2 of the EPP.

4. A summary list of Texas Pollutant Discharge Elimination System (TPDES) permit related reports relative to matters identified in Subsection 2.1 of the EPP which were submitted to the Texas Commission on Environmental Quality (TCEQ) during the report period. Subsection 2.1 of the EPP pertains to aquatic matters that are addressed by the effluent limitations, and the monitoring requirements contained in the TCEQ TPDES station wastewater discharge permit.

Attachment to TXX-22036 Page 3 of9 111. RESULTS OF ACTIVITIES A. As required by Subsection 4.2 of the EPP, the following are summaries and analyses of the environmental protection activities during 2021. Based on the results of these activities, there were no observed adverse environmental impacts resulting from plant operation during 2021.

1. Groundwater Pumpage As indicated in Table 2, groundwater pumpage during 2021 averaged 0.065 gals /min. (gpm) or 34350 total gallons withdrawn for the year. CPNPP continues to be supplied by Somervell County Water District (SCWD) which started in January 2012. Groundwater withdrawal dropped to <1 gpm after Somervell County Water District (SCWD) became our supplier.

Groundwater withdrawn during 2021 was used primarily for potable and sanitary purposes. No groundwater was used to supplement the station's Surface Water Treatment System.

The average annual pumpage rate of 0.065 gpm for 2021 represents <1 % of the predicted operational pumpage (127 gpm) identified in Section 3.3 of the Station's Environmental Report - Operational License Stage. This rate also represents approximately 0.1 % of the actual average withdrawal rate (158 gpm) reported in the Station's Final Environmental Statement - Operating License Stage (Section 5.3.1.2) for the period 1975 to May 1979.

2. Groundwater Levels As indicated in Table 1, the groundwater level in the on-site observation well OB-3 (intersection of Highway 56 and the Plant Access Road) fluctuated during 2021 from a low level in January of 617.81 ft. Mean Sea Level (MSL) to a high level in June of 620.18 MSL. Overall, the water level in OB-3 during the reporting period (January through December) increased 0.72 ft. = 0.22 m.

2021 annua.I average groundwater levels in wells OB-3 and OB-4 were 618.67 ft. MSL and 554.79 ft. MSL respectively.

Attachment to TXX-22036 Page 4 of9

3. Surface Water Treatment System Operation The station's Water Treatment System processed 180.2 MGD of surface water during 2021 for plant process use. No outages in 2021 that required reporting in accordance with Section 4.2.2 of the EPP.

The following is a summary list of monthly surface water usage:

I Month I MGD Clarified I January 16.80 February 14.47 March 16.54 April 15.57 May 14.22 June 14.49 July 14.68 Auoust 14.31 September 13.70 October 14.31 November 14.50 December 16.58 Total annual production 180.2 B. EPP Noncompliance and Corrective Actions - Subsection 5.4.1 (1)

There were no non-compliances with the requirements of the EPP during the reporting period.

C. Changes in Station Design or Operation, Tests, and Experiments Made in Accordance with Subsection 3.1 Which Involved a Potentially Significant Unreviewed Environmental Question.

There were no changes in station design, operation, tests or experiments conducted during the reporting period that are reportable under this subsection.

D. Non-routine Reports Submitted in Accordance with Subsection 5.4.2 None

Attachment to TXX-22036 Page 5 of9 E. Texas Pollutant Discharge Elimination System (TPDES) Permit-Related Reports Relative to Matters Identified in Subsections 2.1 and 5.4.1

1. Routine monthly electronic Discharge Monitoring Reports (netDMRs) for all wastewater outfalls were submitted to the Texas Commission on Environmental Quality (TCEQ) for each month during 2021 via EPA's netDMR tool Central Data Exchange (CDX)

2. Bio-monitoring (e.g. whole effluent toxicity (WET) testing was on a semi-annual frequency in 2021 for water flea and annual frequency for fathead minnow. All required test passed satisfactorily.

a. Chronic static renewal survival and reproduction test using water flea (Ceriodaphnia dubia) Method 1002.0.

b. Chronic static renewal 7-day larval survival and growth testing using fathead minnows (Pimephales promelas) Method 1000.0

3. There were two Issue Reports in 2021 with reference to TPDES wastewater discharge permit variances.

a. TR-2021-001530- Minimum number of BOD samples for Outfall 003 not performed. This was due to extreme weather event that delayed second sample for month of February 2021 from being received by off-site lab within allowable time frame for valid analysis.

b. TR-2021-001693 - Bac-T sample for March of 2021 for Potable Water System was had administrative error of being designated "Special" versus "Routine" when provided to off-site lab for analysis.

4. There were eleven (11) incidental spills in 2021 with none being reportable.

However, a courtesy notification was made to TCEQ for the mineral oil spill associated with 2MT1 catastrophic failure on 6/7/2021.

• Petroleum - 5

• Chemical - 6

Attachment to TXX-22036 Page 6 of9 TABLE 1 2021

SUMMARY

OF GROUNDWATER LEVELS IN OBSERVATION WELLS ANNUAL GROUNDWATER LEVEL CHANGE FOR 2021:

Well OB-3: 276.32 ft. - 275.60 ft. = 0.72 ft.= 0.22 m (increase)

Well OB-4: 293.38 ft. - 295.29 ft.= -1.91 ft. = - 0.58 m (decrease)

NOTES:

(1) Depth to water table (ft.)

(2) Water table elevation (ft.) Mean Sea Level (MSL)

WELL 08-3 WELL 08-4 MONTH (G-3) (G-4)

DEPTH (1) MSL (2) DEPTH (1) MSL (2)

January 276.32 617.81 293.38 554.50 February 275.55 618.58 291.20 556.68 March 275.68 618.45 290.54 557.34 April 275.41 618.72 289.44 558.44 May 275.00 619.13 290.21 557.67 June 273.95 620.18 289.82 558.06 July 274.40 619.73 291.14 556.74 August 275.30 618.83 294.05 553.83 September 276.10 618.03 297.75 550.13 October 276.30 617.83 298.49 549.39 November 275.90 618.23 295.75 552.13 December 275.60 618.53 295.29 552.59

Annual Production Well Report for Recreation/Training System YEAR 2021 Well Reading Monthly Well Last Day of Well Cumulative Yearly Month Total Total Number Gallons Per Cumulative Month (gallons) (gallons) (gallons) Days/Month Total Days/Year Day (average) MonthlyGPM GPM December 505050 N

January 507700 2650 2650 31 31 85.48 0.059 0.0594 w February 509500 1800 4450 28 59 64.29 0.045 0.0524

..J co March 513700 4200 8650 31 90 135.48 0.094 0.0667

<( April 518000 4300 12950 30 120 143.33 0.100 0.0749 I-May 521100 3100 16050 31 151 100.00 0.069 0.0738 June 523000 1900 17950 30 181 63.33 0.044 0.0689 July 526000 3000 20950 31 212 96.77 0.067 0.0686 August 529100 3100 24050 30 242 103.33 0.072 0.0690 September 533600 4500 28550 31 273 145.16 0.101 0.0726 October 535400 1800 30350 31 304 58.06 0.040 0.0693 November 536700 1300 31650 30 334 43.33 0.030 0.0658 December 539400 2700 34350 31 365 87.10 0.060 0.0654 Totals 2700 34350 365 0.0654 (0

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