ML23233A014
| ML23233A014 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/15/2023 |
| From: | Markum T Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| Download: ML23233A014 (1) | |
Text
TENNESSEE 1\14 VALLEY AUTHORITY Tennessee Valley Authority, Sequoyah Nuclear Plant, P.O. Box 2000, Soddy Daisy, TN 37384 August 15, 2023 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001
Subject:
Sequoyah Nuclear Plant, Discharge Monitoring Report (DMR), July 2023 Attached is the July 2023 DMR for Sequoyah Nuclear Plant.
Respectfully, Travis R. Markum Environmental Scientist
DMR Copy of Record Permit Permit #: TN0026450 Permittee: Tennessee Valley Authority (TVA) Facility: TVA SEQUOYAH NUCLEAR PLANT (SQN)
Major: Yes Permittee Address: Sequoyah Access Road, PO Box 2000 Facility Location: SEQUOYAH ACCESS ROAD Soddy Daisy, TN 37379 SODDY DAISY SODDY DAISY, TN 37379 Permitted Feature: 101 Discharge: 101-G External Outfall (no description)
Report Dates & Status Monitoring Period: From 07/01/23 to 07/31/23 DMR Due Date: 08/15/23 Status: NetDMR Validated Considerations for Form Completion Primary discharge from Diffuser Pond.
Principal Executive Officer First Name: Thomas
Title:
Vice President Telephone: 423-843-7001 Last Name: Marshall No Data Indicator (NODI)
Form NODI: --
Parameter Monitoring Location Season Param. Quantity or Loading Quality or Concentration # of Frequency of Sample Type Code Name # NODI Qualifier Value 1 Qualifier Value 2 Units Qualifier Value 1 Qualifier Value Qualifier Value 3 Units Ex. Analysis 1 2 1 2 2 3 04 - deg RC - Recorder Sample = 42.8 99/99 - Continuous C (auto)
Permit 04 - deg RC - Recorder 00010 Temperature, water deg. centigrade 1 - Effluent Gross 0 -- Req.
Req Mon DAILY MX C
99/99 - Continuous (auto)
Value NODI 04 - deg Sample = 29.5 99/99 - Continuous CA - CALCTD C
Z - Instream Permit 04 - deg 00010 Temperature, water deg. centigrade 0 -- Req.
<= 30.5 DAILY MX C
99/99 - Continuous CA - CALCTD Monitoring Value NODI 04 - deg Sample = 2.3 99/99 - Continuous CA - CALCTD C
Permit 04 - deg 00016 Temp. diff. between samp. & upstrm deg. C 1 - Effluent Gross 1 -- Req.
<= 3.0 DAILY MX C
99/99 - Continuous CA - CALCTD Value NODI RC - Recorder Sample = 1758.3 = 1776.5 03 - MGD 99/99 - Continuous (auto)
Permit Req Mon MO Req Mon DAILY RC - Recorder 50050 Flow, in conduit or thru treatment plant 1 - Effluent Gross 0 -- Req. AVG MX 03 - MGD 99/99 - Continuous (auto)
Value NODI Sample Permit 19 -
<= 0.027 MO AVG <= 0.047 DAILY MX 01/07 - Weekly GR - GRAB Req. mg/L 50060 Chlorine, total residual 1 - Effluent Gross 0 --
Value B - Below Detection Limit/No B - Below Detection Limit/No NODI Detection Detection 62 - deg Sample = 1.4 99/99 - Continuous CA - CALCTD C/hr Z - Instream Permit 62 - deg 82234 Temperature rate of change deg. C/hr 0 -- Req.
<= 2.0 DAILY MX C/hr 99/99 - Continuous CA - CALCTD Monitoring Value NODI Sample > 100.0 23 - % 01/30 - Monthly CP - COMPOS Permit IC25 Static Renewal 7 Day Chronic > 69.0 MINIMUM 23 - % 01/30 - Monthly CP - COMPOS TRP3B 1 - Effluent Gross 0 -- Req.
Ceriodaphnia dubia Value NODI Sample > 100.0 23 - % 01/30 - Monthly CP - COMPOS Permit IC25 Static Renewal 7 Day Chronic > 69.0 MINIMUM 23 - % 01/30 - Monthly CP - COMPOS TRP6C 1 - Effluent Gross 0 -- Req.
Chrpimephales Value NODI Submission Note If a parameter row does not contain any values for the Sample nor Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency of Analysis, and Sample Type.
Edit Check Errors
No errors.
Comments Method Detection Limit for Total Residual Chlorine is 0.05 mg/L.
Attachments Name Type Size SQN_WET_Biomonitoring_Report_July_2023.pdf pdf 6326609.0 Report Last Saved By Tennessee Valley Authority (TVA)
User: TRMARKUM Name: Travis Markum E-Mail: trmarkum@tva.gov Date/Time: 2023-08-14 15:19 (Time Zone: -05:00)
Report Last Signed By User: TMCMUTUA Name: Tony McMutuary E-Mail: tmcmutuary@tva.gov Date/Time: 2023-08-15 06:55 (Time Zone: -05:00)
DMR Copy of Record Permit Permit #: TN0026450 Permittee: Tennessee Valley Authority (TVA) Facility: TVA SEQUOYAH NUCLEAR PLANT (SQN)
Major: Yes Permittee Address: Sequoyah Access Road, PO Box 2000 Facility Location: SEQUOYAH ACCESS ROAD Soddy Daisy, TN 37379 SODDY DAISY SODDY DAISY, TN 37379 Permitted Feature: 103 Discharge: 103-G Internal Outfall (no description)
Report Dates & Status Monitoring Period: From 07/01/23 to 07/31/23 DMR Due Date: 08/15/23 Status: NetDMR Validated Considerations for Form Completion Internal Monitoring Point for various flows from Low Volume Waste Treatment Pond to Diffuser Pond, which eventually discharges through Outfall 101.
Principal Executive Officer First Name: Thomas
Title:
Vice President Telephone: 423-843-7001 Last Name: Marshall No Data Indicator (NODI)
Form NODI: --
Parameter Monitoring Location Season # Param. NODI Quantity or Loading Quality or Concentration # of Ex. Frequency of Analysis Sample Type r Code Name Qualifier 1 Value 1 Qualifier 2 Value 2 Units Qualifier 1 Value 1 Qualifier 2 Value 2 Qualifier 3 Value 3 Units I Sample = 7.2 = 7.2 12 - SU 01/30 - Monthly GR - GRAB Permit Req. >= 6.0 MINIMUM <= 9.0 MAXIMUM 12 - SU 01/30 - Monthly GR - GRAB 00400 pH IM - Internal Monitoring Point 0 --
Value NODI Sample = 13.0 = 13.0 19 - mg/L 01/30 - Monthly GR - GRAB Permit Req. <= 30.0 MO AVG <= 100.0 DAILY MX 19 - mg/L 01/30 - Monthly GR - GRAB 00530 Solids, total suspended IM - Internal Monitoring Point 0 --
Value NODI Sample < 4.9 < 4.9 19 - mg/L 01/30 - Monthly GR - GRAB Permit Req. <= 15.0 MO AVG <= 20.0 DAILY MX 19 - mg/L 01/30 - Monthly GR - GRAB 00556 Oil & Grease IM - Internal Monitoring Point 0 --
Value NODI Sample = 0.852 = 0.852 03 - MGD 01/30 - Monthly IN - INSTAN Permit Req. Req Mon MO AVG Req Mon DAILY MX 03 - MGD 01/30 - Monthly IN - INSTAN 50050 Flow, in conduit or thru treatment plant IM - Internal Monitoring Point 0 --
Value NODI Submission Note If a parameter row does not contain any values for the Sample nor Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency of Analysis, and Sample Type.
Edit Check Errors No errors.
Comments Attachments No attachments.
Report Last Saved By Tennessee Valley Authority (TVA)
User: TRMARKUM Name: Travis Markum E-Mail: trmarkum@tva.gov Date/Time: 2023-08-14 14:58 (Time Zone: -05:00)
Report Last Signed By User: TMCMUTUA Name: Tony McMutuary E-Mail: tmcmutuary@tva.gov Date/Time: 2023-08-15 06:55 (Time Zone: -05:00)
DMR Copy of Record Permit Permit #: TN0026450 Permittee: Tennessee Valley Authority (TVA) Facility: TVA SEQUOYAH NUCLEAR PLANT (SQN)
Major: Yes Permittee Address: Sequoyah Access Road, PO Box 2000 Facility Location: SEQUOYAH ACCESS ROAD Soddy Daisy, TN 37379 SODDY DAISY SODDY DAISY, TN 37379 Permitted Feature: 107 Discharge: 107-G Internal Outfall (no description)
Report Dates & Status Monitoring Period: From 07/01/23 to 07/31/23 DMR Due Date: 08/15/23 Status: NetDMR Validated Considerations for Form Completion Metal Cleaning Waste Pond discharge. No monitoring required for stormwater decanting. Daily monitoring required only during dewatering events.
Principal Executive Officer First Name: Thomas
Title:
Vice President Telephone: 423-843-7001 Last Name: Marshall No Data Indicator (NODI)
Form NODI: --
Parameter Monitoring Location Season # Param. NODI Quantity or Loading Quality or Concentration # of Ex. Frequency of Analysis Sample Type r Code Name Qualifier 1 Value 1 Qualifier 2 Value 2 Units Qualifier 1 Value 1 Qualifier 2 Value 2 Qualifier 3 Value 3 Units I Sample Permit Req. >= 6.0 MINIMUM <= 9.0 MAXIMUM 12 - SU 01/01 - Daily GR - GRAB 00400 pH IM - Internal Monitoring Point 0 --
Value NODI C - No Discharge C - No Discharge Sample Permit Req. <= 30.0 MO AVG <= 100.0 DAILY MX 19 - mg/L 01/01 - Daily CP - COMPOS 00530 Solids, total suspended IM - Internal Monitoring Point 0 --
Value NODI C - No Discharge C - No Discharge Sample Permit Req. <= 15.0 MO AVG <= 20.0 DAILY MX 19 - mg/L 01/01 - Daily GR - GRAB 00556 Oil & Grease IM - Internal Monitoring Point 0 --
Value NODI C - No Discharge C - No Discharge Sample Permit Req. <= 1.0 MO AVG <= 1.0 DAILY MX 19 - mg/L 01/01 - Daily CP - COMPOS 01042 Copper, total [as Cu] IM - Internal Monitoring Point 0 --
Value NODI C - No Discharge C - No Discharge Sample Permit Req. <= 1.0 MO AVG <= 1.0 DAILY MX 19 - mg/L 01/01 - Daily CP - COMPOS 01045 Iron, total [as Fe] IM - Internal Monitoring Point 0 --
Value NODI C - No Discharge C - No Discharge Submission Note If a parameter row does not contain any values for the Sample nor Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency of Analysis, and Sample Type.
Edit Check Errors No errors.
Comments Attachments No attachments.
Report Last Saved By Tennessee Valley Authority (TVA)
User: TRMARKUM Name: Travis Markum E-Mail: trmarkum@tva.gov Date/Time: 2023-08-14 14:51 (Time Zone: -05:00)
Report Last Signed By User: TMCMUTUA Name: Tony McMutuary E-Mail: tmcmutuary@tva.gov Date/Time: 2023-08-15 06:55 (Time Zone: -05:00)
DMR Copy of Record Permit Permit #: TN0026450 Permittee: Tennessee Valley Authority (TVA) Facility: TVA SEQUOYAH NUCLEAR PLANT (SQN)
Major: Yes Permittee Address: Sequoyah Access Road, PO Box 2000 Facility Location: SEQUOYAH ACCESS ROAD Soddy Daisy, TN 37379 SODDY DAISY SODDY DAISY, TN 37379 Permitted Feature: 110 Discharge: 110-G External Outfall (no description)
Report Dates & Status Monitoring Period: From 07/01/23 to 07/31/23 DMR Due Date: 08/15/23 Status: NetDMR Validated Considerations for Form Completion Outfall 110 is closed. Only active in the event the plant goes into closed mode.
Principal Executive Officer First Name: Thomas
Title:
Vice President Telephone: 423-843-7001 Last Name: Marshall No Data Indicator (NODI)
Form NODI: --
Parameter Monitoring Location Season Param. Quantity or Loading Quality or Concentration # of Frequency of Sample Type Code Name # NODI Qualifier Value 1 Qualifier Value 2 Units Qualifier Value 1 Qualifier Value Qualifier Value 3 Units Ex. Analysis 1 2 1 2 2 3 Sample Permit 04 - deg Req Mon DAILY MX 99/99 - Continuous CA - CALCTD Req. C 00010 Temperature, water deg. centigrade 1 - Effluent Gross 0 --
C - No Value NODI Discharge Sample Permit
<= 30.5 DAILY MX 04 - deg C 99/99 - Continuous CA - CALCTD Z - Instream Req.
00010 Temperature, water deg. centigrade 0 --
Monitoring C - No Value NODI Discharge Sample Permit
<= 3.0 DAILY MX 04 - deg C 99/99 - Continuous CA - CALCTD Req.
00016 Temp. diff. between samp. & upstrm deg. C 1 - Effluent Gross 1 --
C - No Value NODI Discharge Sample Permit RC - Recorder Req Mon MO AVG Req Mon DAILY MX 03 - MGD 99/99 - Continuous Req. (auto) 50050 Flow, in conduit or thru treatment plant 1 - Effluent Gross 0 --
C - No C - No Value NODI Discharge Discharge Sample Permit
<= 0.027 MO AVG <= 0.047 DAILY MX 19 - mg/L 05/WK - Five Per Week GR - GRAB Req.
50060 Chlorine, total residual 1 - Effluent Gross 0 --
C - No C - No Value NODI Discharge Discharge Sample Permit 62 - deg
<= 30.5 DAILY MX 99/99 - Continuous CA - CALCTD Z - Instream Req. C/hr 82234 Temperature rate of change deg. C/hr 0 --
Monitoring C - No Value NODI Discharge Sample Permit
>= 69.0 MINIMUM 23 - % 01/30 - Monthly GR - GRAB IC25 Static Renewal 7 Day Chronic Ceriodaphnia Req.
TRP3B 1 - Effluent Gross 0 --
dubia C - No Value NODI Discharge Sample Permit
>= 69.0 MINIMUM 23 - % 01/30 - Monthly GR - GRAB Req.
TRP6C IC25 Static Renewal 7 Day Chronic Chrpimephales 1 - Effluent Gross 0 --
C - No Value NODI Discharge Submission Note If a parameter row does not contain any values for the Sample nor Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency of Analysis, and Sample Type.
Edit Check Errors
No errors.
Comments Attachments No attachments.
Report Last Saved By Tennessee Valley Authority (TVA)
User: TRMARKUM Name: Travis Markum E-Mail: trmarkum@tva.gov Date/Time: 2023-08-14 14:55 (Time Zone: -05:00)
Report Last Signed By User: TMCMUTUA Name: Tony McMutuary E-Mail: tmcmutuary@tva.gov Date/Time: 2023-08-15 06:55 (Time Zone: -05:00)
DMR Copy of Record Permit Permit #: TN0026450 Permittee: Tennessee Valley Authority (TVA) Facility: TVA SEQUOYAH NUCLEAR PLANT (SQN)
Major: Yes Permittee Address: Sequoyah Access Road, PO Box 2000 Facility Location: SEQUOYAH ACCESS ROAD Soddy Daisy, TN 37379 SODDY DAISY SODDY DAISY, TN 37379 Permitted Feature: 118 Discharge: 118-G External Outfall (no description)
Report Dates & Status Monitoring Period: From 07/01/23 to 07/31/23 DMR Due Date: 08/15/23 Status: NetDMR Validated Considerations for Form Completion Principal Executive Officer First Name: Thomas
Title:
Vice President Telephone: 423-843-7001 Last Name: Marshall No Data Indicator (NODI)
Form NODI: --
Parameter Monitoring Location Season # Param. NODI Quantity or Loading Quality or Concentration # of Ex. Frequency of Analysis Sample Type r Code Name Qualifier 1 Value 1 Qualifier 2 Value 2 Units Qualifier 1 Value 1 Qualifier 2 Value 2 Qualifier 3 Value 3 Units Sample Permit Req. >= 2.0 MINIMUM 19 - mg/L 02/07 - Twice Every Week GR - GRAB 00300 Oxygen, dissolved [DO] 1 - Effluent Gross 0 --
Value NODI C - No Discharge Sample Permit Req. <= 100.0 DAILY MX 19 - mg/L 02/07 - Twice Every Week GR - GRAB 00530 Solids, total suspended 1 - Effluent Gross 0 --
Value NODI C - No Discharge Sample Permit Req. <= 1.0 DAILY MX 25 - mL/L 01/30 - Monthly GR - GRAB 00545 Solids, settleable 1 - Effluent Gross 0 --
Value NODI C - No Discharge Sample Permit Req. Req Mon MO AVG Req Mon DAILY MX 03 - MGD 01/BA - Once Per Batch ES - ESTIMA 50050 Flow, in conduit or thru treatment plant 1 - Effluent Gross 0 --
Value NODI C - No Discharge C - No Discharge Submission Note If a parameter row does not contain any values for the Sample nor Effluent Trading, then none of the following fields will be submitted for that row: Units, Number of Excursions, Frequency of Analysis, and Sample Type.
Edit Check Errors No errors.
Comments Attachments No attachments.
Report Last Saved By Tennessee Valley Authority (TVA)
User: TRMARKUM Name: Travis Markum E-Mail: trmarkum@tva.gov Date/Time: 2023-08-14 14:56 (Time Zone: -05:00)
Report Last Signed By User: TMCMUTUA Name: Tony McMutuary E-Mail: tmcmutuary@tva.gov Date/Time: 2023-08-15 06:55 (Time Zone: -05:00)
TENNESSEE VALLEY AUTHORITY TOXICITY TEST REPORT INTRODUCTION/ EXECUTIVE
SUMMARY
Report Date: July 31. 2023
- 1. Facility/ Discharger: Sequoyah Nuclear Plant/ TV A
- 2. County/ State: Hamilton/ Tennessee
- 3. NPDES Pennit #: TN0026450
- 4. Type of Facility: Nuclear-Fueled Electric Generating Plant
- 5. Design Flow (MGD): 1,579
- 7. lQl0: 2,456
- 8. Outfall Tested: 101
- 9. Dates Sampled: July 09 - 14. 2023
- 10. Average Flow on Days Sampled (MGD): 1754.651, 1756.935. 1760.914
- 11. Pertinent Site Conditions: Production/ operation data will be provided upon request.
- 12. Test Dates: July 11 - 18, 2023
- 13. Test Type: Short-term Chronic Definitive
- 14. Test Species: Fathead Minnows (Pimephales promelas)
Daphnids (Ceriodaphnia dubia)
- 15. Concentrations Tested(%):
Pimephales promelas: UV treated Outfall 101: 17.25, 34.5. 69, 84.S. 100 UV treated Intake: l 00 Ceriodaphnia dubia: Non-treated Outfall 101: 17 .25, 34.5, 69, 84,5, 100 Non-treated Intake: 100
- 16. Permit Limit Endpoint (% ): Outfall l Ol: IC2s = 69%
l 7. Test Results: Outfall 101: Pimephales pramelas: IC15 > 100%
Ceriodaphnia dubia: IC,5 > l 00%
Page 1 of 90
- 18. Facility
Contact:
Travis Markum Phone#: (865) 748-3294
- 19. Consulting/ Testing Lab: Environmental Testing Solutions. Inc.
- 20. Lab Contact Jim Sumner Phone #: (828) 350-9364
- 21. TVA
Contact:
Rick Sherrard Phone#: (423) 987-2250
- 22. Notes: Exposures to samples collected July 09 - 14, 2023 from Outfall 101 resulted in no toxic effects to fathead minnows or daphnids. The resulting IC2s values, for both species, were > l 00 percent. Exposure of minnows and daphnids to intake samples resulted in no significant differences from the controls during this study period.
Page 2 of 90
METHODS
SUMMARY
Samples:
- 1. Sampling Point: Outfall 10 l, Intake
- 2. Sample Type: Composite
- 3. Sample Information:
Date Date Date (MM-DD-YY) (MM-DD-YY) Arrival Initial (MM-DD-YY)
Sample Time (ET) Time (ET) Temp. TRC* Time (ET)
ID Collected Received (aC) (mg/L) Last Used By 07-09-23 / 0700 to 07-11-23 / 0806 101 07-10-23 I 1322 2.7 <0.10 07-10-23 / 0600 07-12-23 I 0757 07-09-23 I 0700 to 07- l 1-23 / 0806 Intake 07-10-23 / 1322 1.9 <O. lO 07-10-23 I 0600 07-12-23 / 0757 07-11-23 / 0700 to 07-13-23 I 0805 101 07-12-23 / 1218 1.7 <0.10 07-12-23 I 0600 07-14-23 I 0747 07-11-23 / 0700 to 07-13-23 I 0805 Intake 07-12-23 / 1218 1.3 <0.10 07-12-23 I 0600 07-14-23 / 0747 07-15-23 / 1226tt 07-13-23 / 0700 to 101 07-15-23 I 1012 2. L l.81 <0.10 07-16-23 I 0834 07-14-23 I 0600 07-1 7-23 I 073 7 07-15-23 / 1226tt 07-13-23 I 0700 to Intake 07-15-23 / 1012 2.3 <0.10 07-16-23 /0834 07-14-23 I 0600 07-17-23 /0737 "TRC == Total Residual Chlorine tsamples were collected in two 2.5 gallon cubitainers. Temperature was measured in each cubitainer upon arrival.
ttDue to a courier delay, tests were not renewed within+/- 2 h.ours of test initiation.
- 4. Sample Manipulation: Samples from Outfall 101 and intake were warmed to test temperature (25.0 +/- 1.0°C) in a wann water bath.
Aliquots of Outfall 10 l and Intake samples were UV-treated through a 40-watt Smart UV Sterilizer (manufactured by Emperor Aquatics, Inc.) for 2 minutes.
Page 3 of 90
Pimephales prome[as Ceriodaphnia dubia Test Organisms:
L Source: In-house Cultures In-house Cultures
- 2. Age:
Test Method Summary:
I. Test Conditions; Static. Renewal Static, Renewal
- 2. Test Duration: 7 days Until at least 60% of control females have 3 broods
- 3. Control/ Dilution Water: Moderately Hard Synthetic Moderately Hard Synthetic
- 4. Number of Replicates: 1 10
- 5. Organisms per Replicate: lQ l
- 8. Test Temperature: Outfall 101: Mean= 24.7°C Mean= 24.9°C f24.3 - 25.0°C) (24.7-25.2°C)
- 9. Physical/ Chemical Measurements: Alkalinity. hardness, total residual chlorine. and conductivity were measwed at the laboratory in each 100% sample. Daily temperatures were measured in one replicate for each test concentration. Pre- and post-exposure test solutions were analyzed daily for pH and dissolved oxygen.
- 10. Statistics: Statistics were performed according to methods prescribed by EPA using ToxCalc version 5.0 statistical software {Tidepool Scientific Software. McKinneyville, CA}.
Page 4 of 90
TOXICITY TEST RESULTS (see Appendix C for Bench Sheets)
- l. Results of a Pimepha/es promelas Chronic/ 7-day Toxicity Test.
(Genus species) (Type/ Duration)
Conducted July 11 - 18. 2023 using effluent from Outfall 101.
Test Percent Surviving Solutions (time interval used - davs)
(% Effluent) I 2 3 4 5 6 7 Control, 100 100 100 100 100 100 100 UV-treated 17.25% 100 100 100 100 100 100 100 34.5% 100 100 100 100 100 100 100 69% 100 100 100 100 100 100 100 84.5% 100 100 100 100 100 100 100 100.0% 100 100 100 100 100 100 100 Intake 100 100 100 100 100 100 JOO Control, 100 100 100 100 100 100 100 Non-treated Mean Dry Weight (mg)
Test Solutions (replicate number)
(% Effluent) 1 2 3 - 4 Mean Control, 0.659 0.890 0.717 0.756 0.756 UV-treated 17.25% 0.779 0.800 0.829 0.716 0.781 34.5% 0.811 0.780 0.656 0.716 0.741 69% 0.719 0.784 0.732 0.832 0.767 84.5% 0.709 0.783 0.705 0.771 0.742 100.0% 0.708 0.724 0.726 0.811 0.742 Intake 0.808 0.728 0.747 0.678 0.740 Control, 0.849 0.817 0.793 0.800 0.815 Non-treated IC2s Value: > 100% Calculated TU Estimates: < 1.0 TUc*
Permit Limit: 69%
Permit Limit: 1.4 TUc 95% Confidence Limits:
Upper Limit: NA Lower Limit: NA
- TUa= 100/LCso: TUc = 100/ IC2s Page 5 of 90
TOXICITY TEST RESULTS (see Appendix C for Bench Sheets)
- 2. Results of a Ceriodaphnia dubia Chronic/ 7~day Toxicity Test.
(Genus species) (Type I Duration)
Conducted July 11 - 18, 2023 using effluent from Outfall IO 1.
Percent Surviving Test (time interval used - days)
Solutions l 2 3 4 5 6 7
(% Effluent)
Control 100 100 100 100 100 100 100 17.25% 100 100 100 100 100 100 100 34.5% 100 100 100 100 100 100 100 69% 100 100 100 100 100 100 100 84.5% 100 100 100 100 100 100 100 100.0% 100 100 100 100 100 JOO 100 Reproduction (#young/female/7 days)
Test Solutions Data (replicate number)
(% Effluent) 1 2 3 4 5 6 7 8 9 10 Mean Control 29 29 32 29 27 31 28 27 29 30 29.1 17.25% 33 30 32 29 35 33 36 34 29 34 32.5 34.5% 30 33 36 30 33 36 33 33 34 34 33.2 69% 31 32 36 36 38 35 31 33 32 33 33.7 84.5% "?
J_ 35 35 35 37 36 37 35 34 36 35.2 100.0% 36 35 34 31 33 33 31 35 33 33 33.4 IC2s Value: > 100% Calculated TU Estimates: < 1.0 TUc*
Permit Limit: 69%
Permit Limit: 1.4 TUc 95% Confidence Limits:
Upper Limit NA Lower Limit: NA
- TUa= 100/LCso: TUc = 100/ IC2s Page 6 of 90
TOXICITY TEST RESULTS (see Appendix C for Bench Sheets)
- 2. Results of a Ceriodaphnia dubia Chronic/ 7-dav Toxicity Test.
(Genus species) (Type/ Duration)
Conducted July 11 - 18. 2023 using water from Intake Percent Surviving Test (time interval used - days)
Solutions 1 2 3 4 5 6 7
(% Effluent)
Control 100 100 100 100 100 100 100 Intake 100 100 100 100 100 100 too Reproduction (#young/female/7 days)
Test Solutions Data (replicate number)
(% Effluent) 1 2 3 4 5 6 7 8 9 10 Mean Control 27 30 32 30 31 30 33 32 30 32 30.7 Intake 34 32 32 33 35 38 36 33 35 37 34.5 IC2s Value: > 100% Calculated TU Estimates: < 1.0 TUc*
Permit Limit: NIA Permit Limit: NIA 95% Confidence Limits:
Upper Limit NA Lower Limit NA
- TUa= I 00/LC50: TUc = I 00/ IC2s REFERENCE TOXICANT TEST RES ULTS (see Appendix A and D)
Species Date Time Duration Toxicant Results (IC2s)
Pimephales promelas July 11 - 18, 2023 0714 7 days KC! 0.74 g/L Ceriodaphnia dubia July 11 -18, 2023 0756 7 days NaCl I.IO g/L Page 7 of 90
.
- PHYSICAL/CHEMICAL
SUMMARY
Wal~r Chemistry Mean Values and Ranges for UV-ln:aled Pimephalo1s pramelus and Non-trcmcd Ceriudaphma dubia. Scquoyllh Nuclear Plant (SQN), Effluent Outfall l OJ snd Intake perfonned July \ J. 18. 2023.
Test Sample ID Temncratun: /°Cl Dissolnd Oxv~cn fm~/U oH IS.LI. I Conductance AlkaUnily Hatdnes, *Tolal Resitlm1I lniti11I Final lnitiltl Final Initial i;'inal (J&mhos/cm) (mg/L CaC01) (mg/L C11C01) Chlorine (mg/L)
C.cmlrol, 24.7 24.5 7,9 7.1 7.85 7.69 312 6! 86 -
Non-lK'al11J 2-1.7 - 24.8 N.4
- 24.7 7.7 - 80 63 . 7.8 7 73 - 7.99 7.57
- 78! 291 - 325 61 . 62 84 - 88 -
(.'ourrol, 24.7 24.5 7.8 7.3 7.92 7.74 JI0 60 85 -
UV~trut,:,d 2n . 24 s 24 3
- 24.7 7.6 8.0 59 - 8.l 7.84 - S.02 7 62
- 7.87 293
- 327 59 . 61 &4 - 86 -
24.8 24.5 7.8 7.2 7.9! 7.7! 286 - . .
! 17.25%
14.7 - 24.9 14.3 - 247 7.7 - 8.0 6.0 . k.l 7.81
- 8.02 7.60
- 7.82 17) - 301 - . - . -
~ 3-1.~%
24.8 24.5 7.8 7.2 7.8~ 7.67 260 - . .
"'- 24. 7
- 24.9 24.3
- 24 7 7.7 8.U .5 8 . 8. l 7.72 - 7% 7 ss
- 7.78 WI - 272 . . -
~
., 24.9 24.6 7.9 7.1 7.86 7.64 207 - . -
..., 69%
24.8 - 24.9 24.4 - 24.8 7.7
- 8.0 5.8 . 8.0 7.63 - 7.96 7.52
- 7. 76 !98 - 220 - - -
t ii: U.5%
24.9 24.8 - 25 0 24.5 24.4
- 24 8 7.7
- 7.9 8 I 58 7.1
- 8.l 7.83 759 - 7.91 7.63 757
- 7.74 182 170
- 194 -
25.0 24.5 7.9 7.2 7.82 7.61 155 58 61 < 0.10 l00% . 8.1 . . 61 25.0 - 25.0 24.4
- 24.6 1.5 5.9 8.1 7 53 - 7.91 7.48 - 7 73 !40
- 164 57 57 65 , 0.10 < 0.10 Page 8 of 90 25.0 24.S 7.CJ 7 I 7.85 7.67 16ri 66 fl8 <O 10 lnhlk~ ,-o I{}
24 8 - 25.0 24.4
- 2H 1.6 . 8.2 H - 8.1 7.62
- 7.96 749
- 7.78 153
- 174 6S . 67 65 1\ , 0 lO C'adlt111I, 24.8 25 0 7.9 7.9 7.85 7-91 312 61 86 -
N1kHk'tcd 24 7
- 24 9 248
- 25 2 7.7 - 80 7.7 - 8.0 7 73 - 7.99 7.86
- 798 291 - 325 ol - 62 84 - 88 . -
24.8 25.0 7.9 7.9 7.9! 7.90 286 - . -
17.25% .
.S; 2.4.7 - 24.9 24.9 - 25 2 7.6 81J 7.7 8.0 7.8b
- 799 7 86
- 7.98 275
- 296 - - - -
~ 24.S 25.0 7.9 7.9 7.90 7.89 260 - - .
-:.. J.J.5%
24 7
- 25.0 24.7
- 25 2 7.6 . 8.U 78 . 8.0 7.HO
- 798 785
- 7.95 250
- 273 . . - - .
..,'i: 69%
24.9 25.0 7.9 7.9 7.86 7-88 206 - - -
2 250 24.7 - 25 2 7.6 - 8.0 7.8 - 8.0 7.64 - 796 7.82
- 7 95 197
- 215 - -
f 24.9 24.9 80 79 7.81 7_86 181 - - .
-~ 114.5%
24 8
- 25 o 24.7
- 25 I 7.7 8 l 7.7 . 8.l 7.56. - 793 7 81
- 7.92 173
- 19) . - -
~
100%
25.0 24.9 so so 7.79 7.85 153 58 63 < 0.10 14.9 - 25.ll 2U
- 25.0 76 8.2 77 - 8.1 7.49 - 790 7.80 - 790 !44 - 163 51 . 61 57 69 < 0 IO < 0. 10 25.0 25.0 8.0 7.9 7.84 7.89 166 66 67 <0.10 Intake . 6S . .
24 9
- 2S.U 24.8 - 25.1 76 8,2 77 . 8.1 7.58 - 7.97 7.8J - 7.95 160 - 176 63 67 69 <0 IU <.U 10
- Nole T01alrc,idl<llchlorioc was perform,d on oon-trealed OUllilll I Ol ard lnui~e ~ampk:s 0
o,,crall tempualurt'. ( C) i\vcragc Minimum Maximum Pimephales promellu 24,7 24.3 25.0 Ceriadaphnia duh,a 24,9 24. 7 25.2
SUMMARY
I CONCLUSIONS Exposures to samples collected July 09 - 14, 2023 from Outfall 101 resulted in no toxic effects to fathead minnows or daphnids. The resulting IC2s values, for both species, were
> I 00 percent. Exposure of minnows and daphnids to intake samples resulted in no significant differences from the controls during this study period.
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