CP-202400134, (Cpnpp), 2023 Annual Environmental Operating Report (Non-Radiological)
| ML24109A194 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 04/18/2024 |
| From: | Hicks J Vistra Operations Company |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| CP-202400134, TXX-24030 | |
| Download: ML24109A194 (1) | |
Text
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Comanche Peak Nuclear Power Plant
Manager, P.O Box 1002 6322 North FM 56 Glen Rose, TX 76043
CP-202400134 TXX-24030 April 18, 2024
U.S. Nuclear Regulatory Commission Ref CPNPP EPP ATTN: Document Control Desk Washington, DC 20555-0001
Subject:
Comanche Peak Nuclear Power Plant (CPNPP)
Docket Nos. 50-445 and 50-446 2023 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) 2023 Annual Environmental Operating Report (Non-Radiological). The enclosed 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). 10 CFR 50.36a and CPNPP Technical Specification 5.6.3. The report covers the period from January 1, 2023 to December 31, 2023.
This letter contains no new regulatory commitments for CPNPP Unit 1 and Unit 2.
If you have any questions regarding this submittal, please contact Kassie Mandrell at (254) 897-6987 or Kassie.Mandrell@luminant.com.
Sincerely,
Enclosure:
CPNPP 2023 Annual Environmental Operating Report (Non-Radiological)
c (email) - John Monninger, Region IV [John.Monninger@nrc.gov]
Samson Lee, NRR [Samson.Lee@nrc.gov]
John Ellegood, Senior Resident Inspector, CPNPP [John.Ellegood@nrc.gov]
Henry Strittmatter, Resident Inspector, CPNPP [Henry.Strittmatter@nrc.gov]
TXX-24030 Enclosure Page 1 of 8
VISTRA OPERATIONS COMPANY, LLC
COMANCHE PEAK NUCLEAR POWER PLANT
UNITS 1 & 2
2023
ANNUAL ENVIRONMENTAL OPERATING REPORT
(NON-RADIOLOGICAL)
FACILITY OPERATING LICENSE NOs. NPF-87 & 89
1 TXX-24030 Enclosure Page 2 of 8
I. INTRODUCTION
This report describes implementation of the Environmental Protection Plan (EPP) for the calendar year 2023 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 2023, the CPNPP Non-Radiological Environmental Monitoring Program was effective in implementing and monitoring all CPNPP environmental regulatory commitments. Program effectiveness in 2023 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.
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III. 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 2023. Based on the results of these activities, there were no observed adverse environmental impacts resulting from plant operation during 2023.
- 1. Groundwater Pumpage
As indicated in Table 2, groundwater pumpage during 2023 averaged 0.108 gals /min.
(gpm) or 57000 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 2023 was used primarily for potable and sanitary
Treatment System.
The average annual pumpage rate of 0.1 gpm for 2023 represents <1% of the predicted
Report - Operational License Stage. This rate also represents approximately 0.1 % of the actual average withdrawal rate (158 gpm) repor 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 2023 from a low level in October of 613.41 ft. Mean Sea Level (MSL) to a high level in June of 618.23 MSL. Overall, the water level in OB-3 during the reporting period (January through December) decreased 0.55 ft = 0.17 m. 2023 annual average groundwater levels in wells OB-3 and OB-4 were 615.78 ft. MSL and 548.20 ft. MSL respectively.
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- 3. Surface Water Treatment System Operation
165.4 MGD of surface water during 2023 for plant process use. No outages in 2023 that required reporting in accordance with Section 4.2.2 of the EPP.
The following is a summary list of monthly surface water usage:
Month MGD Clarified January 15.50 February 12.32 March 13.42 April 13.18 May 15.44 June 13.13 July 13.57 August 15.20 September 15.89 October 7.74 November 16.49 December 13.48 Total annual production 165.4
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
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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 2023 via EPAs netDMR tool Central Data Exchange (CDX)
- 2. Bio-monitoring (e.g. whole effluent toxicity (WET) testing) was on a semi-annual frequency in 2023 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 was one Issue Reports in 2023 with reference to TPDES wastewater discharge permit potential variances.
- a. TR-2023-007498CPNPP had an extreme rain event with a total rainfall of 6.88 inches.
This extreme rain event resulted in the following impacts to various aspects of Environmental programs/Permits.
-0001854000.
o All sample results were within allowable limits of permit.
0001854000.
o The amount of flow does not have a specific permit limit.
None of the listed items reportable to Texas Commission on Environmental Quality (TCEQ)
- 4. There were six (6) incidental spills in 2023 with none being reportable.
Petroleum 5 Chemical 1
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TABLE 1
2023
SUMMARY
OF GROUNDWATER LEVELS IN OBSERVATION WELLS
ANNUAL GROUNDWATER LEVEL CHANGE FOR 2023:
Well OB-3: 278.55 ft. 279.10 ft. = -0.55 ft = - 0.17 m (decrease)
Well OB-4: 299.08 ft. 301.13 ft. = -2.05 ft. = - 0.62 m (decrease)
NOTES:
(1) Depth to water table (ft.)
(2) Water table elevation (ft.) Mean Sea Level (MSL)
WELL OB-3 WELL OB-4 MONTH (G-3) (G-4)
DEPTH (1) MSL (2) DEPTH (1) MSL (2)
January 278.55 615.58 299.08 548.80
February 277.89 616.24 297.14 550.74
March 276.82 617.31 294.20 553.68
April 276.41 617.72 292.38 555.50
May 276.20 617.93 293.98 553.90
June 275.90 618.23 293.80 554.08
July 277.35 616.78 298.15 549.73
August 280.50 613.63 303.65 544.23
September 280.65 613.48 309.44 538.44
October 280.72 613.41 308.44 539.44
November 280.10 614.03 304.83 543.05
December 279.10 615.03 301.13 546.75
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TXX-24030 Enclosure Page 8 of 8
FIGURES
1.5 FIGURE 1 1.25 GROUNDWATER PUMPAGE 2012 THRU 2022
1 NOTE Somvervell County Water District (SCWD) supplied potable water started 2012 0.75
0.5
0.25
0 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
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