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Category:Environmental Monitoring Report
MONTHYEARDCL-24-082, Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment2024-08-28028 August 2024 Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment DCL-2024-523, Submittal of Report on Discharge Self-Monitoring2024-07-18018 July 2024 Submittal of Report on Discharge Self-Monitoring DCL-2024-527, Sea Turtle Stranding Report (Loggerhead Sea Turtle) Diablo Canyon Power Plant2024-07-0101 July 2024 Sea Turtle Stranding Report (Loggerhead Sea Turtle) Diablo Canyon Power Plant DCL-24-047, 2023 Annual Non-radiological Environmental Operating Report2024-05-0101 May 2024 2023 Annual Non-radiological Environmental Operating Report DCL-24-049, 2023 Annual Radiological Environmental Operating Report2024-05-0101 May 2024 2023 Annual Radiological Environmental Operating Report DCL-24-027, 2023 Annual Radioactive Effluent Release Report2024-04-28028 April 2024 2023 Annual Radioactive Effluent Release Report A000375, Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP) - 1st Quarter Report 20242024-04-20020 April 2024 Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP) - 1st Quarter Report 2024 DCL-2024-507, 2023 Annual Report on Discharge Self-Monitoring2024-02-27027 February 2024 2023 Annual Report on Discharge Self-Monitoring DCL-2024-501, Sea Turtle Stranding Report (Green Sea Turtle)2024-01-24024 January 2024 Sea Turtle Stranding Report (Green Sea Turtle) DCL-2024-500, Transmittal of the 4th Quarter of 2023 Report on Discharge Self-Monitoring2024-01-18018 January 2024 Transmittal of the 4th Quarter of 2023 Report on Discharge Self-Monitoring ML24003A7212023-11-27027 November 2023 Independent Safety Committee; Diablo Canyon Nuclear Power Plant Operations, Thirty-Third Annual Report on the Safety July 1, 2022-June 30, 2023 DCL-2023-520, Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP)2023-10-19019 October 2023 Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP) DCL-23-034, 2022 Annual Nonradiological Environmental Operating Report2023-05-0101 May 2023 2022 Annual Nonradiological Environmental Operating Report DCL-2023-511, Report on Discharge Monitoring for the First Quarter of 20232023-04-20020 April 2023 Report on Discharge Monitoring for the First Quarter of 2023 ML23137A1352023-04-18018 April 2023 NPDES Receiving Water Monitoring Program 2022 Annual Report ML23052A1152023-02-18018 February 2023 Independent Spent Fuel Storage Installation, Annual Radioactive Effluent Release Report for 2022 DCL-2023-503, Annual Sea Turtle Report2023-01-26026 January 2023 Annual Sea Turtle Report DCL-2023-502, (DCPP) 4th Quarter 2022 Report on Discharge Self-Monitoring2023-01-18018 January 2023 (DCPP) 4th Quarter 2022 Report on Discharge Self-Monitoring DCL-22-032, 2021 Annual Nonradiological Environmental Operating Report2022-04-27027 April 2022 2021 Annual Nonradiological Environmental Operating Report DCL-22-033, Annual Report of Occupational Radiation Exposure for 20212022-04-26026 April 2022 Annual Report of Occupational Radiation Exposure for 2021 DCL-22-025, 2021 Annual Radiological Environmental Operating Report2022-04-21021 April 2022 2021 Annual Radiological Environmental Operating Report DCL-22-017, Submittal of 2021 Annual Radioactive Effluent Release Report2022-04-21021 April 2022 Submittal of 2021 Annual Radioactive Effluent Release Report DCL-21-037, Annual Nonradiological Environmental Operating Report2021-04-28028 April 2021 Annual Nonradiological Environmental Operating Report DCL-2021-514, NPDES Receiving Water Monitoring Program: 2020 Annual Report2021-04-27027 April 2021 NPDES Receiving Water Monitoring Program: 2020 Annual Report DCL-21-022, 2020 Annual Radiological Environmental Operating Report2021-04-0101 April 2021 2020 Annual Radiological Environmental Operating Report L-21-003, Independent Spent Fuel Storage Installation - Annual Radioactive Effluent Release Report for 20202021-03-0101 March 2021 Independent Spent Fuel Storage Installation - Annual Radioactive Effluent Release Report for 2020 DCL-20-036, 2019 Annual Non-Radiological Environment Operating Report2020-04-29029 April 2020 2019 Annual Non-Radiological Environment Operating Report DCL-20-010, 2019 Annual Radiological Environmental Operating Report2020-04-16016 April 2020 2019 Annual Radiological Environmental Operating Report L-20-003, Independent Spent Fuel Storage Installation - Annual Radioactive Effluent Release Report for 20192020-03-0202 March 2020 Independent Spent Fuel Storage Installation - Annual Radioactive Effluent Release Report for 2019 DCL-2020-509, 2019 Annual Report on Discharge Self-Monitoring2020-02-27027 February 2020 2019 Annual Report on Discharge Self-Monitoring DCL-19-026, Annual Radioactive Effluent Release Report2019-04-23023 April 2019 Annual Radioactive Effluent Release Report DCL-18-028, Submittal of 2017 Annual Radioactive Effluent Release Report2018-04-24024 April 2018 Submittal of 2017 Annual Radioactive Effluent Release Report DCL-17-034, 2016 Annual Non-Radiological Environmental Operating Report2017-04-27027 April 2017 2016 Annual Non-Radiological Environmental Operating Report ML17128A0242017-04-26026 April 2017 Submittal of 2016 Annual Radiological Environmental Operating Report DCL-17-030, Diablo Canyon Units 1 and 2, Submittal of 2016 Annual Radiological Environmental Operating Report2017-04-26026 April 2017 Diablo Canyon Units 1 and 2, Submittal of 2016 Annual Radiological Environmental Operating Report DCL-17-031, Transmittal of 2016 Annual Radioactive Effluent Release Report2017-04-26026 April 2017 Transmittal of 2016 Annual Radioactive Effluent Release Report ML17096A7662017-04-0606 April 2017 Submittal of Mitigating Strategies Assessment for Flooding Report DCL-17-030, 2016 Annual Quality Assurance Report for the Radiological Environmental Monitoring Program (REMP)2017-03-29029 March 2017 2016 Annual Quality Assurance Report for the Radiological Environmental Monitoring Program (REMP) DCL-2017-511, Submittal of 2016 Annual Discharge Self-Monitoring Report2017-02-28028 February 2017 Submittal of 2016 Annual Discharge Self-Monitoring Report DCL-2017-501, Diablo Power Plant - 2016 Annual Sea Turtle Report2017-01-27027 January 2017 Diablo Power Plant - 2016 Annual Sea Turtle Report DCL-2017-500, Discharge Monitoring Report for Fourth Quarter 20162017-01-20020 January 2017 Discharge Monitoring Report for Fourth Quarter 2016 DCL-16-113, Corrections to the 2014 and 2015 Annual Radioactive Effluent Release Reports2016-11-0101 November 2016 Corrections to the 2014 and 2015 Annual Radioactive Effluent Release Reports DCL-16-055, Transmittal of 2015 Annual Non-Radiological Environmental Operating Report2016-04-28028 April 2016 Transmittal of 2015 Annual Non-Radiological Environmental Operating Report ML16154A1652016-04-27027 April 2016 Submittal of Copies of Receiving Water Monitoring Program 2015 Annual Report L-2016-518, Diablo Canyon Power Plant, Submittal of Copies of Receiving Water Monitoring Program 2015 Annual Report2016-04-27027 April 2016 Diablo Canyon Power Plant, Submittal of Copies of Receiving Water Monitoring Program 2015 Annual Report DCL-16-054, Annual Radioactive Effluent Release Report for 20152016-04-27027 April 2016 Annual Radioactive Effluent Release Report for 2015 DCL-2016-518, NPDES Receiving Water Monitoring Program: 2015 Annual Report2016-04-25025 April 2016 NPDES Receiving Water Monitoring Program: 2015 Annual Report DCL-16-045, Submittal of 2015 Annual Radiological Environmental Operating Report2016-04-21021 April 2016 Submittal of 2015 Annual Radiological Environmental Operating Report DCL-2016-516, Transmittal of 1st Quarter 2016 Report on Discharge Self-Monitoring2016-04-20020 April 2016 Transmittal of 1st Quarter 2016 Report on Discharge Self-Monitoring DCL-15-137, Corrections to the 2014 Annual Radioactive Effluent Release Report2015-12-31031 December 2015 Corrections to the 2014 Annual Radioactive Effluent Release Report 2024-08-28
[Table view] Category:Letter type:DCL
MONTHYEARDCL-24-087, License Renewal - Historic and Cultural Resources Reference Documents (Redacted)2024-09-12012 September 2024 License Renewal - Historic and Cultural Resources Reference Documents (Redacted) DCL-24-083, CFR Part 21 Notification: Commercially Dedicated Snubber Valve Not Properly Heat Treated2024-09-0909 September 2024 CFR Part 21 Notification: Commercially Dedicated Snubber Valve Not Properly Heat Treated DCL-24-078, Pre-Notice of Disbursement from Decommissioning Trust2024-09-0303 September 2024 Pre-Notice of Disbursement from Decommissioning Trust DCL-24-082, Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment2024-08-28028 August 2024 Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment DCL-24-077, Responses to NRC Requests for Additional Information on Diablo Canyon Power License Renewal Application Severe Accident2024-08-15015 August 2024 Responses to NRC Requests for Additional Information on Diablo Canyon Power License Renewal Application Severe Accident DCL-24-075, Response to Request for Additional Information for License Amendment Request 23-02, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power React2024-08-0808 August 2024 Response to Request for Additional Information for License Amendment Request 23-02, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power React DCL-24-070, License Amendment Request 24-03 Revision to Technical Specification 5.5.16 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies2024-07-31031 July 2024 License Amendment Request 24-03 Revision to Technical Specification 5.5.16 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies DCL-24-071, Core Operating Limits Report for Unit 2 Cycle 252024-07-22022 July 2024 Core Operating Limits Report for Unit 2 Cycle 25 DCL-2024-523, Submittal of Report on Discharge Self-Monitoring2024-07-18018 July 2024 Submittal of Report on Discharge Self-Monitoring DCL-2024-527, Sea Turtle Stranding Report (Loggerhead Sea Turtle) Diablo Canyon Power Plant2024-07-0101 July 2024 Sea Turtle Stranding Report (Loggerhead Sea Turtle) Diablo Canyon Power Plant DCL-24-066, Request to Extend the Nrg Approval of Alternative for Use of Full Structural Weld Overlay, REP-RHR-SWOL2024-06-27027 June 2024 Request to Extend the Nrg Approval of Alternative for Use of Full Structural Weld Overlay, REP-RHR-SWOL DCL-24-054, LCO 3.0.3 Completion Time Limits2024-05-17017 May 2024 LCO 3.0.3 Completion Time Limits DCL-24-052, Responses to NRC Requests for Additional Information on the Diablo Canyon Power Plant License Renewal Application Environmental Report2024-05-16016 May 2024 Responses to NRC Requests for Additional Information on the Diablo Canyon Power Plant License Renewal Application Environmental Report DCL-24-051, One Hundred Eighty Day Steam Generator Report for Twenty-Fourth Refueling Outage2024-05-0808 May 2024 One Hundred Eighty Day Steam Generator Report for Twenty-Fourth Refueling Outage DCL-24-049, 2023 Annual Radiological Environmental Operating Report2024-05-0101 May 2024 2023 Annual Radiological Environmental Operating Report DCL-24-047, 2023 Annual Non-radiological Environmental Operating Report2024-05-0101 May 2024 2023 Annual Non-radiological Environmental Operating Report DCL-24-048, O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 20232024-04-30030 April 2024 O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 2023 DCL-24-027, 2023 Annual Radioactive Effluent Release Report2024-04-28028 April 2024 2023 Annual Radioactive Effluent Release Report DCL-24-045, Annual Report of Occupational Radiation Exposure for 20232024-04-24024 April 2024 Annual Report of Occupational Radiation Exposure for 2023 DCL-24-042, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-04-17017 April 2024 Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations DCL-24-022, Notification of Changes to Decommissioning Schedule2024-04-0202 April 2024 Notification of Changes to Decommissioning Schedule DCL-24-023, Revised Certification of Permanent Cessation of Power Operations2024-04-0202 April 2024 Revised Certification of Permanent Cessation of Power Operations DCL-24-031, Decommissioning Funding Report2024-03-27027 March 2024 Decommissioning Funding Report DCL-24-032, 2024 Annual Statement of Insurance for Pacific Gas and Electric Company’S Diablo Canyon Power Plant2024-03-27027 March 2024 2024 Annual Statement of Insurance for Pacific Gas and Electric Company’S Diablo Canyon Power Plant DCL-24-028, Request for Enforcement Discretion Regarding Compliance with Technical Specification 3.0.3, Limiting Condition for Operation Applicability2024-03-21021 March 2024 Request for Enforcement Discretion Regarding Compliance with Technical Specification 3.0.3, Limiting Condition for Operation Applicability DCL-24-018, License Amendment Request 24-01 Revision to Technical Specification 5.6.6, Reactor Coolant System (RCS) Pressure and Temperature Limits Report (PTLR)2024-02-28028 February 2024 License Amendment Request 24-01 Revision to Technical Specification 5.6.6, Reactor Coolant System (RCS) Pressure and Temperature Limits Report (PTLR) DCL-2024-507, 2023 Annual Report on Discharge Self-Monitoring2024-02-27027 February 2024 2023 Annual Report on Discharge Self-Monitoring DCL-24-020, Nuclear Material Transaction Report for New Fuel2024-02-21021 February 2024 Nuclear Material Transaction Report for New Fuel DCL-24-014, Owners Activity Report for Unit 1 Twenty-Fourth Refueling Outage2024-02-12012 February 2024 Owners Activity Report for Unit 1 Twenty-Fourth Refueling Outage DCL-24-013, Nuclear Material Transaction Report for New Fuel2024-02-0707 February 2024 Nuclear Material Transaction Report for New Fuel DCL-24-010, Nuclear Material Transaction Report for New Fuel2024-01-29029 January 2024 Nuclear Material Transaction Report for New Fuel DCL-2024-502, 2023 Annual Sea Turtle Report for Diablo Canyon Power Plant (DCPP)2024-01-25025 January 2024 2023 Annual Sea Turtle Report for Diablo Canyon Power Plant (DCPP) DCL-2024-501, Sea Turtle Stranding Report (Green Sea Turtle)2024-01-24024 January 2024 Sea Turtle Stranding Report (Green Sea Turtle) DCL-2024-500, Transmittal of the 4th Quarter of 2023 Report on Discharge Self-Monitoring2024-01-18018 January 2024 Transmittal of the 4th Quarter of 2023 Report on Discharge Self-Monitoring DCL-24-008, Schedule Considerations for Review of the DCPP License Renewal Application2024-01-17017 January 2024 Schedule Considerations for Review of the DCPP License Renewal Application DCL-24-009, Nuclear Material Transaction Report for New Fuel2024-01-17017 January 2024 Nuclear Material Transaction Report for New Fuel DCL-24-004, Supplement to License Amendment Request 23-01 Revision to Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2024-01-15015 January 2024 Supplement to License Amendment Request 23-01 Revision to Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b DCL-23-129, Nuclear Material Transaction Report for New Fuel2023-12-27027 December 2023 Nuclear Material Transaction Report for New Fuel DCL-23-122, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-12-14014 December 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation DCL-23-128, Emergency Plan Update2023-12-13013 December 2023 Emergency Plan Update DCL-23-125, Core Operating Limits Report for Unit 1 Cycle 252023-12-0606 December 2023 Core Operating Limits Report for Unit 1 Cycle 25 DCL-23-121, Supplement to License Amendment Request 23-03, Revision to Technical Specification3.7.8, Auxiliary Saltwater System2023-11-16016 November 2023 Supplement to License Amendment Request 23-03, Revision to Technical Specification3.7.8, Auxiliary Saltwater System DCL-23-120, License Amendment Request 23-03 Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System2023-11-14014 November 2023 License Amendment Request 23-03 Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System DCL-23-118, License Renewal Application2023-11-0707 November 2023 License Renewal Application DCL-2023-520, Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP)2023-10-19019 October 2023 Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP) DCL-23-103, Independent Spent Fuel Storage Installation - Withdrawal of License Amendment Request 22-01, Request for Approval of Alternative Security Measures for Early Warning System2023-10-13013 October 2023 Independent Spent Fuel Storage Installation - Withdrawal of License Amendment Request 22-01, Request for Approval of Alternative Security Measures for Early Warning System DCL-23-092, Material Status Report for the Period Ending August 31, 20232023-09-28028 September 2023 Material Status Report for the Period Ending August 31, 2023 DCL-23-077, License Amendment Request 23-02 Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors2023-09-27027 September 2023 License Amendment Request 23-02 Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors DCL-23-083, Upcoming Meeting with Nuclear Security and Incident Response Staff2023-09-13013 September 2023 Upcoming Meeting with Nuclear Security and Incident Response Staff DCL-23-078, Nuclear Material Transaction Report for New Fuel2023-09-0606 September 2023 Nuclear Material Transaction Report for New Fuel 2024-09-09
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Pacific Gas and Electric Company James M. Welsch Diablo Canyon Power Plant Site Vice President Mail Code 104/6 P. 0. Box 56 Avila Beach, CA 93424 April 29, 2015 805.545.3242 Internal: 691.3242 Fax: 805.545.4884 PG&E Letter DCL-15-056 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Power Plant, Units 1 and 2 2014 Annual Nonradiological Environmental Operating Report
Dear Commissioners and Staff:
Enclosed is the 2014 Annual Nonradiological Environmental Operating Report for Diablo Canyon Power Plant, Units 1 and 2, submitted in accordance with Facility Operating Licenses DPR-80 and DPR-82, Appendix 8, "Environmental Protection Plan," Subsection 5.4.1.
PG&E makes no regulatory commitments (as defined by NEI 99-04) in this Jetter.
This letter includes no revisions to existing regulatory commitments.
Sincerely,
~AuJv.__---
~es M. Welsch bnsm/4540/641 05148 Enclosure cc: Diablo Distribution cc/enc: Marc L. Dapas, NRC Region IV Administrator Kenneth A Harris Jr., Executive Officer, CCRWQCB Thomas R. Hipschman, NRC Senior Resident Inspector Siva P. Lingam, NRR Project Manager A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway
Enclosure PG&E Letter DC L-15-056 2014 ANNUAL NONRADIOLOGICAL ENVIRONMENTAL OPERATING REPORT DIABLO CANYON POWER PLANT, UNITS 1 AND 2 Pacific Gas & Electric Company April2015
Enclosure PG&E Letter DCL-15-056
- 1. Introduction Pacific Gas and Electric Company (PG&E) has prepared the 2014 Annual Nonradiological Environmental Operating Report in accordance with the Environmental Protection Plan (EPP), Appendix B, of Facility Operating Licenses DPR-80 and DPR-82 for Diablo Canyon Power Plant (DCPP), Units 1 and 2 respectively. The report describes implementation of the EPP per the routine reporting requirements of EPP Subsection 5.4.1. PG&E remains committed to minimizing the environmental impact of operating DCPP.
- 2. Environmental Monitoring 2.1. Aquatic Issues Aquatic issues are addressed by the effluent limitations and receiving water monitoring/reporting requirements contained in the DCPP National Pollutant Discharge Elimination System (NPDES) permit. The NPDES permit includes applicable requirements of the California State Water Resources Control Board's Ocean Plan and Thermal Plan.
2.1.1. Routine Influent and Effluent Monitoring During 2014, DCPP submitted quarterly NPDES reports containing routine influent and effluent monitoring data and permit compliance summaries to the Central Coast Regional Water Quality Control Board (CCRWQCB). The reports were submitted electronically during the month following the end of each quarter via the California Integrated Water Quality System (CIWQS), an internet database application.
DCPP also submitted an annual NPDES report for 2014 to the CCRWQCB in February 2015 via the CIWQS application. The annual report contained monitoring data summaries in tabular and graphical form, and a summary of permit compliance and corrective actions, as applicable, for 2014. Copies of the quarterly and annual reports were submitted concurrently in hardcopy format to the Nuclear Regulatory Commission (NRC).
2.1.2. Receiving Water Monitoring Program The NPDES Receiving Water Monitoring Program, required by the CCRWQCB, included the ecological monitoring, temperature measurements, and State Mussel Watch activities.
Environmental monitoring programs have recorded biological changes in the discharge area since plant start-up. These programs monitor intertidal and subtidal communities of invertebrates, algae, and fish in the discharge cove and at stations north and south of DCPP. During 2014, environmental monitoring continued under the revised Receiving Water Monitoring Program (RWMP). The revised RWMP 1
Enclosure PG&E Letter DCL-15-056 continued historical monitoring tasks, including temperature monitoring, State Mussel Watch activities, and intertidal and subtidal surveys (with additional stations and increased sampling frequencies).
The NPDES permit remains under administrative extension. In 2000, DCPP reached a tentative agreement with CCRWQCB staff, which addressed current and future impacts on receiving waters from ongoing power plant cooling water discharge. This agreement, and the associated NPDES permit renewal application, did not receive the expected approvals from the CCRWQCB in July 2003. Currently, final resolution of outstanding issues related to receiving water impacts, as well as NPDES permit renewal, remain pending. Based on the tentative agreement, future receiving water monitoring requirements will be significantly reduced or potentially eliminated upon approval of a renewed NPDES permit. Power plant wastewater discharge effluent monitoring would continue under a revised NPDES permit.
DCPP submitted PG&E Letter No. DCL-2014-519, "Receiving Water Monitoring Program- 2013 Annual Report," to the CCRWQCB and the NRC on April 29, 2014. The 2014 Receiving Water Monitoring Annual Report will be submitted at the end of April 2015.
2.1.3. Thermal Effects Study DCPP submitted the final thermal effects comprehensive assessment report to the CCRWQCB and the NRC in 1998.
2.1.4. 316(b) Studies DCPP submitted PG&E Letter No. DCL-2000-514, "316(b)
Demonstration Report," the final 316 (b) report, to the CCRWQCB and the NRC on March 1, 2000.
2.2. Terrestrial Issues 2.2.1. Herbicide Application and Erosion Control Herbicides are used as one component of an overall land vegetation management program that includes transmission line corridors and rights-of-way. The company continues to use only Environmental Protection Agency and/or state-approved herbicides and applies them in accordance with all applicable regulations.
PG&E continues to implement erosion control activities at the plant site and in the transmission line corridors as part of an overall land management program. These erosion control activities consist of routine maintenance and prevention efforts performed periodically on 2
Enclosure PG&E Letter DCL-15-056 an as-needed basis, including seasonal storm and wildfire damage repair.
2.2.2. Preservation of Archaeological Resources A. CA-SL0-2 Site Management Archaeological Site CA-SL0-2 is managed in compliance with the Archaeological Resource Management Plan (ARMP) and Diablo Canyon Power Plant Interdepartmental Administrative Procedure EV1.1D2. All projects undertaken within the CA-SL0-2 site, or immediately adjacent, are reviewed to determine whether archaeological deposits associated with the site are present and, if so, an impact assessment is completed. PG&E would invoke the notification, monitoring, and mitigation procedures identified in the ARMP if a project-related impact is identified.
The annual photo-monitoring of CA-SL0-2 was completed on November 19, 2014, by PG&E's Sr. Cultural Resource Specialist.
The overall condition of site CA-SL0-2 is stable, with the exception of areas on the western and southwestern margins of the site that are subject to natural erosion of the marine terrace. In addition, erosion of the steep road cut on the eastern margin of the site continues despite area soil stabilization and revegetation work completed in late 2011.
Nonetheless, no significant changes were observed since completion of the prior monitoring event conducted in December 2013. Barriers in place along the established roadways within the archeological site have proven effective in keeping vehicular traffic off of sensitive portions of the site, and restricting traffic to previously disturbed areas.
Signage around site CA-SL0-2, instructing all site personnel or visitors to contact DCPP Management prior to entering the controlled site boundary, remain in place and are in good condition.
Dense vegetation that covers much of the site has stabilized loose soil, limiting erosion and obscuring surface artifacts. Localized erosion along Diablo Creek Road will be addressed through additional revegetation measures during the spring of 2015 if enough moisture is forecast to sustain new plantings. The gradual loss of deposits along portions of the marine terrace subject to natural erosion is continuing to be monitored. Opportunistic collection of materials eroding from this location may be undertaken to salvage datable material and diagnostic artifacts as necessary or prudent.
B. Northern Chumash Correspondence Over the course of 2014, PG&E corresponded with representatives of the local Northern Chumash community in connection with a facility 3
Enclosure PG&E Letter DCL-15-056 high-voltage transmission substation upgrade project currently under consideration. Contact was initiated by PG&E's Sr. Cultural Resources Specialist to notify Native American contacts of the proposed upgrades to the DCPP 230 kV switchyard, and to solicit information or concerns the contacts may have with the proposed work. The Native American Heritage Commission provided a list of 24 Native American contacts that may have knowledge of, or interest in, cultural resources in the vicinity of the proposed project. Hard copy letters were followed by email or telephone communications. Two responses were received, neither of which presented information that indicate that the project would impact known resources in the vicinity.
Correspondence and a consultation log related to the contacts are maintained for reference by PG&E's Cultural Resources Section.
- 3. Unusual or Important Environmental Events There were no unusual or important environmental events during 2014.
- 4. Plant Reporting Requirements 4.1. EPP Noncompliance There were no EPP noncompliances during 2014.
4.2. Changes in Station Design There were no changes in plant design, operation, tests, or experiments that involved an unreviewed environmental question or a change to the EPP.
4.3. Nonroutine Reports There were no nonroutine events during 2014 per the EPP, and therefore no nonroutine reports were submitted to the NRC.
4