ML20195D190

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Annual Rept
ML20195D190
Person / Time
Site: Rancho Seco
Issue date: 05/06/1999
From:
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML20195D188 List:
References
NUDOCS 9906090097
Download: ML20195D190 (19)
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. Page 1 of 12 RANCHO SECO ANNUAL REPORT

! Shutdown Statistics: i The District provides the following shutdown statistics:

1. Rancho Seco permanently shut down nuclear power operations on June 7,1989.

2.- The Rancho Seco reactor has been completely defueled since December 8,19f 9.

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3. The Rancho Seco Spent Fuel Pool (SFP) contains 493 spent fuel assemblies and is licensed for 1080 spent fuel assemblies.

'4. The NRC amended the Rancho Seco operating license to Possession-Only status on March 17,1992.

L 5. The NRC issued Rancho Seco a Decommissioning Order on March 20,1995. The Order (1) authorized the District to decommissioning Rancho Seco and (2) accepted the Rancho Seco Decommissioning Funding Plan.

6. The District revised the NRC-approved Rancho Seco Decommissioning Plan (which became the Post Shutdown Decommissioning Activities Report (PSDAR) pursuant to {

revised 10 CFR 50.82) in March 1997, to (1) conform to the new 10 CFR 50.82 PSDAR l content requirements and (2) address immediate incremental decommissioning activities. l l

7. ' The District intends to remove all the spent fuel assemblies from the SFP beginning in l late 1999 or early 2000, and place the fuel in dry storage at the Rancho Seco Independent j Spent Fuel Storage Installation (ISFSI). The ISFSIis being licensed pursuant to
10 CFR 72. j 8.' The NRC issued 10 CFR 71 Certificate of Compliance No 9255 (C of C #9255) for the NUHOMS MP187 Package to Transnuclear West Inc., on September 10,1998. The l NRC issued Revision 1 to C of C #9255 on April 1,1999. Revision I superceded the - l original C of C in its entirety. The District will use the NUHOMS MP187 system to store and transport Rancho Seco spent fuel assemblies.

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Page 2 of 12 RANCHO SECO ANNUAL REPORT Shutdown Experience Summary:

The District provides the following shutdown experience summary.

General Plant Administrative Activities

'l. The District continues to implement its Incremental Decommissioning Action Plan, which defines the program for removing and dismantling both non and low level radioactive systems and equipment that are not required to function during the Permanently Defueled Mode (PDM).

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2. The District continues to pursue ISFSI license approval.  ;
3. Rancho Seco continues to safely store its spent nuclear fuel in the SFP.

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4. Special Nuclear Materials (SNM) personnel completed the annual SNM Inventory and Semi-annual SNM Accountability reports.
5. Rancho Seco personnel completed an audit of GTS/Duratek and added their Bear Creek facility to the Approved Suppliers List.
6. Rancho Seco personnel completed an audit of Envirocare of Utah and added them to the Approved Supp!iers List.
7. Tech Services / Quality issued a Maintenance Rule assessment and a procedure (RS AP-1610) that implements the Maintenance Rule for Rancho Seco.
8. Plant management determined the truck radiation monitor at the site vehicle access point provides an additional, effective barrier that protects public health and safety because:
a. There have been no free-release problems since the truck monitor was installed  :
b. The monitor alarmed, as expected, when shipping low-level radioactive waste.
c. The monitor detected naturally occurring radioactive material (NORM) in
propane and sandblast grit that was brought onto the site.

l 9. Licensing completed the biennial Defueled Safety Analysis Report update and submitted it to the NRC.

10. The District sold the Rancho Seco high-pressure turbine rotor and shipped it to Arkansas Nuclear One nuclear power plant.

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c Page 3 of 12 RANCHO SECO ANNUAL REPORT General Plant Administrative Activities (Continued)

11. The District terminated the SMUD/ DOE Cooperative Agreement and transferred title of the second, unfinished MP187 cask to DOE for completion by a DOE contractor
12. Plant personnel completed the annual Rancho Seco Emergency Plan exemise and medical, fire, and control room drills.
13. . Rancho Seco personnel participated in an Owner's Group audit of Transnuclear West Inc.
14. The District submitted revision 2 to the 10 CFR 72 Safety Analysis Report in support of ISFSIlicensing.
15. Technical Services issued the design change package for replacing the primary SFP cooling and support systems with a separate Chiller system in support of the decommissioning effort. The new primary SFP cooling system will allow several plant systems to be made available for dismantlement. I
16. Technical Services issued the design change package for a Drum Dryer liquid processing system that will provide an additional method for processing wet radioactive waste into a solid waste in accordance with the Process Control Program.
17. The District submitted a Financial Assurance letter on the Rancho Seco decommissioning trust fund to the NRC.
18. Licensing submitted a Permanently Defueled Technical Specification request (PA-193) to the NRC to support a SFP level instrumentation modification.

Fuel Off-load Project Activities

1. Maintenance removed the upender assemblies from the SFP upender pit in support of Impact Limiter installation.
2. Maintenance installed two Impact Limiters in the SFP.
3. Three groups of Rancho Seco personnel visited Calvert Cliffs to observe loading fuel into a canister and transferring a loaded canisters to an ISFSI using the standard NUHOMS i storage system.
4. Technical Services completed the cask drop analysis and identified Fuel Storage Building modifications required to support fuel casking operations.

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l Page 4 of 12 RANCHO SECO ANNUAL REPORT i

Fuel Off-load Project Activities (Continued)

5. Licensing /rechnical Services responded to the NRC's second round of questions on the ,

Rancho Seco license amerdment request (PA-192) that updates the Rancho Seco cask drop and design basis accident analysis.

Incremental Decommissioninn Team Activities: 1 The Incremental Decommissioning Team (IDT) dismantled the following systems and major )

secondary plant components:

l. The 'A' and 'B' first and second point feedwater heaters from the Mezzanine level of the !

Turbine Building;

2. Main Condenser water box covers;
3. Low and high-pressure steam turbines and rotors;
4. The 'A' and 'B' fifth and sixth point feedwater heaters from the Mezzanine level of the Turbine Building;
5. The portion of the Chemical Addition System that contained solidified caustic;
6. The LP-1 section of the Main Condenser, including the tubing;
7. Main Steam piping;
8. Condensate pumps and motors; and
9. Portions of the Lube Oil System.

Additional Incremental Decommissioning related activities include the following:

1. IDT decontaminated and shipped two steam turbine rotor shafts to Mare Island Naval Shipyard for recycling.
2. IDT removed and segmented the low and high-pressure turbine covers / casings in preparation for shipment to a metal recycle facility.
3. IDT segmented the Number I and Number 2 low-pressure steam turbine rotors.

' 4. IDT dismantled the two main feedwater pumps.

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Page 5 of 12 RANCHO SECO ANNUAL REPORT Incremental Decommissionine Team Activities: (Continued)

5. IDT constructed two decontamination grit blast booths in the Solidification Structure.
6. Asbestos contractors removed approximately 500,000 pounds of asbestos containing material in support of incremental decommissioning activities during the reponing period.

. 7.- IDT shipped approximately 2,000 tons of scrap metal to the District's metal recycle and disposal contractor facilities during the reporting period.

8. IDT shipped approximately 13,500 cubic feet low level radioactive decommissioning waste to Envirocare for disposal during the reporting period.

General Plant Maintenance Activities:

The Rancho Seco Maintenance and Operations Departments performed the following significant maintenance activities:

1. Installed the refurbished Folsom South Canal 4.16 kV circuit breakers,
2. Performed required annual Cask Support Facility crane inspections and certifications,
3. Completed repairs on the A-546 fan,
4. Removed sediment and vegetation debris from the south Retention Basin,

- 5. Completed the 25 Folsom South Canal pumping station preventive maintenance tasks,

6. Completed the annual preventive maintenance on the Spent Fuel Pool Cooling System pump,
7. Repaired the Service Water System back-flow preventer and block valve,
8. Installed a new SFP temperature indicator to replace the failed one,
9. Installed the mobile Drum Dryer in the Solidification Structure,
10. Installed the new primary SFP cooling Chiller system,

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! Page 6 of 12 RANCHO SECO ANNUAL REPORT General Plant Maintenance Activities:(Continued)

11. Completed preventive maintenance on the Gantry Crane and Fuel Storage Building Overhead crane,
12. Modified Condensate Storage Tank piping to establish a cask make-up water supply at ,

the Washdown Platform in the Fuel Storage Building,

13. Completed two Demineralized Reactor Coolant Storage Tank and two Miscellaneous 1 Waste Condensate Tank system spent demineralizer resin bed transfers to a central J collection tank.

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14. Transferred ten Liquid Effluent Radwaste Treatment System demineralizer resin beds to a central collection tank.

Environmental Report Information:

In accordance with PDTS D6.9.6b, Rancho Seco is required to provide to the NRC copies of (1) new permit and certificate applications and (2) permit and certificate changes or additions that are required by government agencies for protection of the environment. During the reporting period, Rancho Seco applied for one new certificate that is requin d by a govemment agency for )

protection of the environment. Attached, the District provides a copy of its application for a waiver from waste discharge requirements for wastewater generated during rehabilitation of drinking water wells.

10 CFR 50.59(b) Summary:

The following is a tabulation of the facility changes, tests, and experiments that (1) were approved between May 7,1998, through May 6,1999, and (2) required a 10 CFR 50.59 safety evaluation. None of the following changes evaluated in accordance with 10 CFR 50.59 resulted in an Unreviewed Safety Question.

Design Change Package (DCP) R94 0002, Revklon 3, " Plant Integrated Computer System (PICS)," added replacement of the existing SFP temperature indicating switch with a new temperature indicating transmitter to the PICS modification package. The new SFP temperature transmitter provides an analog input to PICS that alarms on high SFP temperature. This SFP temperature monitoring change requires a change to the DSAR (Tables 11.8-2 and 11.8-3), which is a LBD, but does not require a change to any other LBD.

. 1 Page 7 of 12 RANCHO SECO ANNUAL REPORT l i

10 CFR 50.59(h) Summary: (Continued)

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DCP R96-0003, Revision 2, " Reconfigure 125 Volt DC and 120 Volt AC Power Supply, Consolidate Loads, and Eliminate Unnecessary Electrical Buses," adds a modification to de-energize the Nuclear Service Electrical Building (NSEB) once equipment required to function is removed from the NSEB and consolidated on other electrical distribution panels. The reconfigured panels will continue to carry loads well below their design rating. This design l change will require changes to the DS AR, which is a LBD, but will not require a change to any 1 other LBD. )

I DCP R98-0009, Revision 0," Start-up Transformer X976 and Nuclear Service Transformer X74 Bus Links," makes Temporary Modification 97-04 permanent. Temporary Modification 97-04 disconnected de-energized equipment and unused, connected equipment to accommodate performing preventive electrical maintenance on Nuclear Service Transformer X74 without taking down Start-Up Transformer No.1. This modification requires a change to the DSAR (Figure 8.2-2), which is a LBD, but does r.ot require a change to any other LBD.

DCP R98-0010, Revision 0, " Remove FPS Piping and Transformer Yard Equipment,"

removes fire protection sprinkler piping that is no longer required in the Turbine Building and Transformer Yard due to incremental decommissioning activities. This modification requires a change to the Decommissioning Fire Protection Plan (DFPP), which is a LBD, but does not require a change to any other LBD.

DCP R98-0011, Revision 0, " Spent Fuel Pool (SFP) Island," installs a chiller, filter and demineralizer equipment adjacent to the SFP and replaces the existing primary SFP cooling system. The new primary SFP cooling system will allow several systems, currently required to support SFP cooling, to be made available for decommissioning. Also, the new system allows isolation of the piping that penetrates the SFP. The new Chiller system is designed such that a coolant loop failure will only result in water draining back into the SFP. This modification requires changes to the DS AR (Chapters 1 and 9), which is a LBD, but does not require a change to any other LBD.

l DCP R98-0019, Revision 0," Drum Dryer Installation," provides an alternative to using the Blender Dryer for processing liquid radioactive waste into a dried solid waste. The Drum Dryer will produce drums of solid waste that will be stored for eventual shipment to a licensed disposal facility. The distillate from the Drum Dryer process is returned to the Miscellaneous Liquid Radwaste System for additional processing prior to release. The addition of the Drum Dryer requires changes to the DS AR (Sections 11.2 and 11.4), which is a LBD, but does not require a change to any other LBD.

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. l Page 8 of 12 i RANCHO SECO ANNUAL REPORT 9

10 CFR 50.59(b) Summary: (Continued)

DCP R99-0002, Revision 0," Remove East Bruce Diesel Room Walls & Obstructions,"

removes a fire protection wall and some sprinkler piping in both Bruce GM emergency diesel generator rooms. Fire protection in these rooms is unnecessary because the generators have been removed. This modification requires a change to the Decommissioning Fire Protection Plan (DFPP), which is a LBD, but does not require a change to any other LBD.

Disposition, Revision 0, for Deviation from Quality (DQ) 97-0062, " Removal of Recorder XJR-95107 and Multiplexer UJT-95100/UJY-95100 from Service," justified leaving Recorder XJR-95107 and Multiplexer UJT-95100/UJY-95100 out-of-service and downgrading ,

this equipment to QA Class 4. The liquid effluent discharge information previously available 1 through the multiplexer and recorder is available on the Plant Integrated Control System or the Digital Radiation Monitoring System RM-11 console. This configuration change requires a change to the Defueled Safety Analysis Report (DS AR), which is a LBD, but does not require a change to any other LBD.

Engineering Report ERPT-M0229, Revision 1," Analysis of Drop Accidents During Cask Handling Operations," provides the updated Rancho Seco cask drop analysis for movement of spent fuel in a cask from the SFP to the cask transporter outside the Fuel Storage Building (FSB). ERIrr-M0229 analyzed 21 potential cask drop scenarios along the path the Turbine Building Gantry Crane will move a loaded cask.

The ERPT incorporates several mitigation measures to ensure:

1. The cask and Dry Shielded Canister (DSC) system design basis load limits are not exceeded,
2. The cask and DSC system engineered reactivity control features are maintained and will perform their intended function,
3. The Ker reactivity coefficient remains below the design basis limit of 0.95, I
4. The potential damage to the Inside Cask Catcher and the fuel assembly storage racks will be small enough to preclude a loss of FSB integrity and SFP leakage control, and
5. The fuel assemblies stored in the SFP storage racks will not be damaged, thereby limiting the number of fuel assemblies involved in a cask drop accident to 24.

ERPT-M0229, Revision 1, will require several changes to the DS AR and the RSEP, but does not require a change to any other LBD.

Page 9 of 12 RANCHO SECO ANNUAL REPORT 10 CFR 50.59(h) Summary: (Continued)

Independent Spent Fuel Storage Installation (ISFSI) Safety Analysis Report (SAR),

Revision 2,is an update to the ISFSI SAR that supports the District's 10 CFR 72 license application for the Rancho Seco ISFSI. Revision 2 incorporates information previously provided to the NRC in the District's response to NRC requests for additional information. Also, Revision 2 includes information associated with design changes made as part of the 10 CFR 71 transportation package licensing process. ISFSI SAR, Revision 2, requires a change to the DS AR (section 7.4.2) to address ISFSI Horizontal Storage Module temperature monitor and Cask pressure monitor inputs to the Plant Integrated Computer System, but, does not require a change to any other LBD. Other LBD changes required for NRC review of the Rancho Seco ISFSI license application were previously submitted to the NRC.

Procedure RP.312.I.16, Revision 4, " Dosimetry Issue Access Control," removed specific dosimetry requirements and provided dosimetry options for personnel entering Radiological Controlled Areas (RCAs). Dosimetry used to monitor personnel entering RCAs must meet 10 CFR 20 requirements. This procedure change requires a change to the DSAR (Section i1.9.1),

which is a LBD, but does not require a change to any other LBD.

Procedure SP.625A, Revision 7," Permanently Defueled Auxiliary & Spent Fuel Building Filter System A Test (A-542A)," changed the upper flow limit acceptance criteria to 55,000 scfm in accordance with the DQ 98-0011 Disposition. This procedure change requires a change to the DSAR (Table 9.5-1), which is a LBD, but does not require a change to any other LBD.

Procedure SP.625B, Revision 7," Permanently Defueled Auxiliary & Spent Fuel Building Filter System B Test (A-542B)," changed the upper flow limit acceptance criteria to 55,000 scfm in accordance with the DQ 98-0011 Disposition. This procedure change requires a change to the DS AR (Table 9.5-1), which is a LBD, but does not require a change to any other LBD.

Procedure TDAP 3010, Revision 2, " Certified Fuel Handler Training Program," updated the DAGM, Operations, title to Director, Power Generation, and changed instructor certification authority from DAGM, Operations, to Manager, Plant Closure & Decommissioning. This procedure change directly affected the Certified Fuel Handler Training Program, which is a LBD, but did not affect any other LBD.

Process Control Program (PCP) Manual, Revision 2, removed wet waste processing methods no longer used, added reference to other available wet waste processing methods, removed obsolete references, and added definitions associated with the other wet waste processing methods. Also, added generic sampling and analysis requirements and made provisions for using decay analysis in determining isotopic mix. This change directly affected the PCP Manual, which is a LBD, but does not affect any other LBD.

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Page 10 of 12 RANCHO SECO ANNUAL REPORT 10 CFR 50.59(b) Summary: (Continued)

Proposed License Amendment No.193, Revision 0, " Editorial Change to Spent Fuel Pool Instrumentation Calibration Specification D4.1.2," proposes to editorially change in SFP level instrument calibration specification D4.1.2 from making a specific reference to ' alarm switches' to making a generic reference to ' instrumentation.' This license amendment will accommodate a District modification to SFP level instmmentation that replaces the old level alarm switches with a new ultrasonic level transmitter. The wording change to surveillance specification D4.1.2 has no affect on the:

1. SFP level alarm setpoints,
2. Requirement to perform the 18-month SFP level instrument calibration,
3. Permanently Defueled Technical Specification (PDTS) D3/4.1 Limiting Conditions for Opemtion or Action statements, and
4. The Bases for PDTS D3/4.1.

Therefore, the PDTS change will continue to accommodate SFP level instmmentation calibration and will have no adverse impact on (1) the safe operation of Rancho Seco during the Permanently Defueled Mode or (2) the health and safety of the public. This proposed license amendment directly affects the PDTS, and will require a change to the DSAR (Figure 9.4-1), which is a LBD, but does not affect any other LBD.

Rancho Seco Quality Manual, Section Policy, Revision 6, " Quality Assurance Policy,"

editorially updated procedure to reflect current organization titles. This Rancho Seco Quality Manual change did not reduce the commitments in the Quality Assurance Program and did not require NRC approval prior to implementation. The change directly affected the Rancho Seco Quality Manual, which is a LBD, and did not affect any other LBD.

Rancho Seco Quality Manual,Section I, Revision 9, " Organization," editorially updated procedure to reflect current organization titles and consistently use upper case when the term NUCLEAR SAFETY is used since NUCLEAR SAFETY is a defined term. This Rancho Seco

. Quality Manual change did not reduce the commitments in the Quality Assurance Program and j did not require NRC approval prior to implementation. The change directly affected the Rancho Seco Quality Manual, which is a LBD, and did not affect any other LBD. j i

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Page 11 of 12 i RANCHO SECO ANNUAL REPORT 10 CFR 50.59(b) Summary 1(Continued)

Rancho Seco Quality Manual,Section II, Revision 9, " Quality Assurance Program," made general editorial improvements and clarified the applicability of the 10 CFR 50, Appendix B quality program criteria addressed in the matrix in Attachment 11-1. This Rancho Seco Quality Manual change did not reduce the commitments in the Quality Assurance Program and did not require NRC approval prior to implementation. The change directly affected the Rancho Seco Quality Manual, which is a LBD, and did not affect any other LBD.

4 SMUD Lease of Technical Center to Energy Photovoltaics, Inc. would have permitted Energy Photovoltaics Inc. to occupy the Technical Center building adjacent to the Rancho Seco Industrial Area for the purpose of designing and manufacturing photovoltaic modules and other solar energy related systems and components. This activity would have resulted in changes to the DSAR and the Decommissioning Fire Protection Plan. Since this lease was never executed and SMUD retracted the Technical Center lease offer, ng change to any LBD is required.

Special Test Procedure No.1339 (STP-1339), Revision 2, Temporary Change No. 02, " Plant Integrated Computer System (PICS) Test," added procedure steps to test PICS points T001, F3004, E1411, E1412, and R430 field inputs. Also, this change tests the alarm gong for RTU 0 Failure and the ' watchdog' timer circuit. Finally the change tests annunciator points 34 and 84 on panel H2ES and point 30 on panel H2YSA. This STP demonstrates the ability of PICS to monitor defueled plant operating parameters and provides necessary information and alarms to plant operators. This test is not described in the DSAR, but does agt constitute an Unreviewed Safety Question because this STP is a functional test designed to place new plant equipment into service. This STP does not require a change to any LBD.

Special Test Procedure STP-1340, Revision 1, "HSM Temperature Monitoring System,"

verifies that the HSM Temperature Monitoring System thermocouples are functional and that the system is properly tied in to the Plant Integrated Computer System. This test is necessary to support dry fuel storage at the Rancho Seco ISFSI. The test is not described in the DS AR, but does Boto constitute an Unreviewed Safety Question because the STP verifies proper function of the ISFSI SAR required ISFSI temperature monitoring system. This STP does not require a change to any LBD.

Special Test Procedure STP-1344, Revision 0, "RHUT Discharge Line Integrity Test,"

assesses the integrity of the RHUT discharge line that connects to the Retention Basins. This test is not described in the DSAR and does not constitute an Unreviewed Safety Question because this STP is a functional test that is designed to verify the integrity of existing plant equipment.

l This STP does not require a change to any LBD.

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Page 12 of 12 RANCHO SECO ANNUAL REPORT 10 CFR 50.59(b) Summary: (Continued) 1 Special Test Procedure STP-1346, Revision 0, " Drum Dryer Verification Test," verifies proper installation and operation of the new Drum Dryer liquid to solid waste processing unit. <

This test is not described in the DS AR, but does not constitute an Unreviewed Safety Question because this STP is a functional test that is designed to verify proper operation of newly installed plant equipment. The Drum Dryer processes wastewater on a batch basis (~250 gallon maximum system inventory)in a berm area that would contain any spill. This STP does not require a change to any LBD.

Special Test Prccedure STP-1347, Revision 0, "SFP Level Instrumentation," verifies that the new SFP ultrasonic level detection instrumentation functions as designed in accordance with DCP R99-0005. The test is not described in the DSAR, but does not constitute an Unreviewed Safety Question because the STP is being used to verify proper operation of equipment prior to placing it in service. This STP does not require a change to any LBD.

I Special Test Procedure STP-1348A, Revision 0, " Spent Fuel Pool Chiller Verification Test," verifies the cooling capabilities and proper operation of the SFP Chiller system. The SFP Chiller draws water from near the top of the SFP. The SFP Chiller system is designed such that a coolant loop failure will only result in water draining back into the SFP. The test is not described in the DSAR, but does not constitute an Unreviewed Safety Question because the STP is being used to verify proper operation of the SFP Chiller system before relying on the Chiller system as l the new primary SFP cooling system. This STP does not require a change to any LBD. I Special Test Procedure STP-1348C, Revision 0, " Condensate Storage Tank (CST) Transfer Pump Verification Test," verifies that the CST pump is capable of transferring (1) water from the CST to the Fuel Storage Building and (2) maintaining system pressure in the automatic mode.

The test is not described in the DSAR, but does nni constitute an Unreviewed Safety Question because the STP is being used to verify proper operation of equipment prior to placing it in service. This STP does not require a change to any LBD.

.n)SMUD

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SACRAMENTO MUMCIPAL UTIUTY oISTRICT C R O. Som 15830, Sacramento CA 95852 1830. (916) 452-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA MPC&D 98-163 l

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William Croyle California Regional Water Quality Control Board Central Valley Region l

3443 Routier Road, Suite A Sacramento, CA 95827-3098 1

1 APPLICATION / REPORT OF WASTE D.iSCHARGE FOR WASTEWATER  !

FROM REHABILITATION OF DRINKING WATER WELLS Reference 1: Telephone conversation between William Croyle (CRWQCB) and Tim Shaw (SMUD), dated July 15,1998 1

Dear Mr. Croyle:

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In accordance with Reference 1, the District provides the enclosed " Application /

Report of Waste Discharge" forms and a check for the .$200 application fee. As instructed in Reference 1, the District requests a waiver of waste discharge j l requirements to facilitate Rancho Seco's unique situation (see SPECIAL ,

CONDITIONS attachment to the application). The District provides supplemental j information as part of the application that details the proposed drinking water well  !

rehabilitation projects at the Rancho Seco Site and Rancho Seco Park i Members of your staff requiring additional information or clarification may contact ,

Mr. Tim Shaw at (916) 732-4812. l l

Sincerely, l

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Steve J. Re eker Manager Plant Closure and Decommissioning

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Enclosures (2) l RANCHO SECO NUCLEAR GENERATING STATION O 14440 Twin Cities Road. Herald CA 95638-9799;(209) 333-2935

Page 5 C ALIFORNIA ENVIRONMENTAL State ofCalifomia

  • WASTE DISCHARGE REQUIREMENTS OR NPDES PERMIT p ,,, I. FACILITY INFORMATION Name:

Rancho Seco & Rancho Seco Park Address:

14440 Twin Cities Road City: County: State: Zip Code:

Herald Sacramento CA 95638-9799 Coatact Persos: Telephone Nember:

Tim Shaw (916) 732-4812 B. Facility Owner:

N***. Duner Type (Check See)

  • Sacramento Municipal Utility District i. O x divmi Z. O C rrratie-wr'a :
2. O Cover e=t=1 t 0 hrt=== hic 6201 S Street Asucy City: State: Zip Code:

s 00 Otser: Municipality Sacramento CA 95852 Caetact Person: Telephase beher: Federai Tax ID:

Steven A. Redeker, Manager, Rancho Seco (916)732-4827 94-6001157 C. Facility Operator (The agency or business, not the person):

Name: Operator Type (Check one)

Same as owner 1. O rativm2 t G C ,poratie.

Addr m :

3 O c ver e=t=1 t 0 r=rt== =hir Agency Cary: Stare: Zip Code:

1 O Other:

Contact Person: Telephone Number:

D. Owner of the Land:

Name:

Same as owner L O 1.uv m 2 Owner t Type (Cheek c=>-= cia- eme) O Addreu4 1 C Covernmental & O r t eimi,

) Agency {

City: State: Zip Code:

L C Other:

Contact Person: Telepheme Numeer:

I E. Address Where Legal Notice May Be Served:

Addr =

14440 Twin Cities Road 1 i

City: State: Zip Code:

Herald CA 95638-9799 Richard Mannheimer (916) 732-4916 F. Billing Address:

^d*" )

14440 Twin Cities Road City: State: Zip Code:

f Herald CA 95638-9799 l

Contact Persos: Telephone Number:

l Tim Shaw (916) 732-4812 roc. :mov, I

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Page 6 CALIFOIkNIA ENVIRONMENTAL StateofCalifornia PROTECTION AGENCY Regional Water Quality Control Board ,

APPLICATION / REPORT OF WASTE DISCHARGE ,"  ;

GENERAL INFORMATION FORM FOR .,  !

WASTE DISCHARGE REQUIREMENTS OR NPDES PERMIT -c .

II. TYPE OF DISCHARGE Check Type of Discharge (s) Described in this Application (A g,t B):

A. WASTE DISCHARGE TO LAND B. WASTE DISCHARGE TO SURFACE WATER Check all that apply:

Domestics!unicipal Wastewater Treatment and Disposal Animal or Aquacultural wastewater O Animal waste Sotids Cooling Water O Land Treatment Unit BiosolidseResidual O Mining O Dredge Material Disposal Hazardous Waste (see ins ructions)

Waste Pile O Surface impoundment Landfill (see instructions) 1 Wastewater Reclamation O Industrial Process Wastewater Storm Water M Other, please describe: Drinking Water Well Cleaning Wastewater III. LOCATION OF THE FACILITY Describe the physicallocation of the facility.

1. Assessor's Parce Number (s) 2. Latitude 3. Longitude Facility: 140-05-08, 140-05-09, Facility: 38' 20' 35" Factitty: 121* 07' 30" Discharge Point: 140-05-10 Discharge Point: Discharge Point:

IV. REASON FOR FILING New Discharge or Facility O Changes in Ownership / Operator (see instructions)

O Change in Design or Operation O Waste Discharge Requirements Upd' ate or NPDES Permit Reissuance Change in Quantityrrype of Discharge Other:_,,, Limited duration land aoolication V. CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA)

Name of Lead Agency: N/A Has a public agency determined that the proposed project is exempt from CEQA? O Yes a No if Yes, state the basis for the exemption and the name of the agency supplying the exemption on the line below.

Basis for Exemption / Agency:

lias a " Notice of Determination" been filed under CEQA? Yes No if Yes, enclose a copy of the CFQA document, EnvironmentalImpact Report, or Negative Declaration. If no, identify the expected type of CEQA document and expected date of completion.

Expected CEQA Documents:

EIR Negative Declaration Expected CEQA Completion Date: N/A rare 20016/94

Page 7 CA1.1FORNIA ENVIRON).IENTA1. StateofCalifornia PROTECTION ACENCY ',

Regional Water Quality Control Board

  • APPLICATION / REPORT OF WASTE DISCHARGE s GENERAL INFORMATION FORM FOR 1

[ j WASTE DISCHARGE REQUIREMENTS OR NPDES PERMIT , c VI. OTHER REQUIRED INFORMATION Please provide a COMPLETE characterization of your discharge. A complete characterization includes, but is not limited to, a list of constituents and the discharge concentration ofeach constituent, a list of other appropriate waste discharge characteristics, a description and schematic drawing of all treatment processes, a description of any Best Management Practices (BMPs) used, and a description of disposal methods.

1 Also include a site map showing the location of the facility and, ifyou are submitting this application for an NPDES permit, identify the surface water to which you propose to discharge. Please try to limit your maps  ;

to a scale of 1:24,000 (7.5' USGS Quadrangle) or a street map, if more appropriate.

VII. OTHER Attach additional sheets to explain any responses which need clarification. List attachments with titles and dates below:

Special Conditions, Dated 10/6/98 You will be notified by a representative of the RWQCB withis 30 days of receipt of your application. The notice will state if your application is complete or if there is additionalinformation you must submit to complete your Application / Report of Waste Discharge, pursuant to Division 7, Section 13260 of the California Water Code.

VIII. CERTIFICATION "I certify under penalty of law that this document. including all attachments and supplemental information, were prepared under my direction and supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the infirmation 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. I am aware that there are significant penalties for submitting false information, including the possiblilty of fine and imprisonment."

Print Name: Stevg J,. Redeker/ / TitleM a n a g e r , Plant Closure & Decon .

Signature: . a Date: b i'f y # v v s FOR OFFICE USE ONLY Dite Form 200 Received: Letter to Discharger: Fee Amount Received: Check 8:

rus:ocissen

10/08/98 Application / Report of' Waste Discharge Rancho Seco Site & Rancho Seco Park SPECIAL CONDITIONS Scheduline Limitations:

Though drinking water well rehabilitation (i.e., cleaning) is common, most well rehabilitation is performed on large water systems. Large drinking water systems generally have the ability to schedule outages of 30-days or more during non-peak seasons without losing the ability to supply potable water. Long-term outages allow for problem diagnosis followed by discharge permit application submittal and then completion of corrective actions. The remote location of Rancho Seco and the lack of a backup potable water supply preclude long-term well outages.

Comolete Charactedzation:

j The process of well rehabilitation at Rancho Seco may involve generation of wastewater, i.e. water contaminated with treatment chemicals. The most practical way for the Distdct to dispose of this wastewater is land application. Land application is best accomplished dudng dry weather.

The " Application / Report of Waste Discharge" permit application requests a complete characterization of the proposed discharge. A complete characterization is not possible until the District (1) removes the well pump,(2) diagnoses the well problem, and (3) decides on the appropriate corrective actions. A general charactedzation of the rehabilitation process is provided in the form of the attached contractor's (Layne Christenson Company) proposal *, dated September 28,1998. Once the contractor and the Distdct determine the appropriate corrective actions, the District will (1) inform the California Regional Water Quality Control Board (CRWQCB) of the planned corrective actions and (2) submit a complete characterization of any discharged rehabilitation wastewater to the CRWQCB.

USGS Mao:

Attached is an excerpt of the USGS map provided to the CRWQCB with the District's last NPDES permit renewal application (Waste Discharge order No.96-070). The map shows the area where the subject wells are located. The entire map is extremely large and should be in CRWQCB files.

r. .

Layne Christensen Company P.O. Box 1306 Zip: 95776

  • 275 County Road 98
  • Woodland Califomia 956954925
  • Phone: (530) 662 2825
  • Far (530) 662-2896

' September 28,1998 Tim Shaw S.M.U.D.

P.O. Box 15830 Sacramento, CA 95852 1830 Re: RANCH SECO WELL REHABILfrA1 TON

Dear Mr. Shaw:

It was a pleasure meetmg you at the two well sites on Why. This leseris to confirm our conversation concerning the rehabilitation of these wells and the possible operational procedure to improve their performance.

It is not possible to prescribe a rehabilitation procedure without obtammg current well data such as the extent of the encrustations and bio fouhng, type of growth, etc. We are proposing the pumps be removed, disassembled and inspected, and the well video surveyed. This work can be done on a lump sum bases.

Upon analysis of the data a recommended rehabilitation ixcaiduie and cost will be provided.

1 Outlined below are the procedure and lump sum cost for Phase I and a typical procedure and budgeting  ;

cost for Phase 2.  !

RANCH SECO POWER PLANT WELUPUMP - PHASE 1

1. Mobilize a pump rig, service truck and support equipment. l i
2. Remove the existing submersible pump.
3. Transport equipment to our shop, disassemble and inspect the pump.
4. Conduct a video survey of the well casing.
5. Evaluate the data and provide procedure and cost for Phase 2 Phase 1 -Lump Sum Cost $3,900.00 Phase 2
1. Mobilize rehabilitation rig, service truck and support +W =t.
2. Premix acid based chemicals and inject into the screened sections of the well.
3. Line scratch / swab to remove encrustations and biofouling. Allow a mmimum 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> contact time.
4. Neutralize chemicals and pump oft'to waste
5. Premix and inject a 2000 P.P.M. sodium hypochloride solution. Bail / swab. Allow a mimmum of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> contact time.
6. Neutralize and purnp to waste.

e 7. Install the submersible pump and a %" chemical injection line. Chlorinate to 50 PPM.

8. Start up and pump to waste.

Phase 2 Estimated Cost 515,500.00 Note: The wastewater will be pumped to the swale located about 150' north of the well site. The district will plug the drampipe and will provide temporary potable water to supp:y mimmal plant use during rehabilitation. Estimated downtime is 10 working days.

. \

RANCHO SECO PARK WELUPUMP-PHASE 1

1. Mobilize a pump rig, service truck and support equipment.
2. Remove the existing submerstic pump.
3. Transport equipment to our shop, &sassemble and inspect the pump.
4. Conduct a video survey of the well casing.
5. Evaluate the data and primde imirA and cost for Phase 2.

Phase 1 -Lump Sum Cost $3,900.00 Phase 2

1. Mobilize rehabilitation rig, service truck and support eqmpment.
2. Premix acid based ch*=icale and inject into the screened sections of the well.
3. Line scratch / swab to runeve encrustation and binfonhas Allow a o . ..< - of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> contact time.
4. Neutrahze chenucals and pump of to waste.
5. Remix and inject a 2000 P.P.M. sodem hypochtonde solanon. Bail / swab. Allow a anamum of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> contact time.
6. Neutrahze and punp to waste.

7, innall a new submersible punp and motor and a %" che=ar=1 injection line. Chionnate to 50 P.P.M.

8. Start up and pump to waste.

Phase 2 - Esumated cost. $16,000.00 Note: The wastewater will be pumped to the dry land pasture located apprommmely 200' to the east and will be dissipated through a portable ab=n=== pipe spnnider system. 'Itc &stnct will provide a temporary potable water supply to meet mmunal park use during rehahilenrmn Finmsend down time is 10 working days.

The layne Christensen 4- on site will have the following safety trammg.

O.S.H.A.

40 Hour Hazwoper D.O.T. HM 126R l

RED CROSS FIRST AID /C.P.R.

Iayne Christensen can primde a heakh and safety plan if regered by S.M.U.D.

Terms are net 30 days with I %% per month charge on past due invoices.

Please callifyou have any queshons.

Sincerely, e d Richard G. Eberlein Sales Engineer F: dick /samd

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