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Home My WebLink AboutDSHW-2024-005375 UTAH HAZARDOUS WASTE POST-CLOSURE PERMIT FOR POST-CLOSURE OF THE RESERVOIR WASTE MANAGEMENT AREA Issued To CHEVRON PRODUCTS COMPANY SALT LAKE REFINERY EPA # UTD092029768 Davis County, Utah Reissued August 31, 2007 STATE OF UTAH PLAN APPROVAL Permittee: Chevron Products Company, Salt Lake Refinery Davis County, Utah EPA Identification Number UTD092029768 Pursuant to the Utah Solid and Hazardous Waste Act, (the Act), 19-6-101, as amended and the Utah Administrative Code (UAC) (R315-1 through R315-14) as adopted by the Utah Solid and Hazardous Waste Control Board (the Board), a plan approval (herein after called “permit”) is issued to the Chevron Products Company, Salt Lake Refinery (herein after called the “Permittee”), for post-closure and corrective action at the Chevron Products Company, Salt Lake Refinery, Davis County, Utah, including, but not limited to, the Reservoir Waste Management Area. The U.S. Environmental Protection Agency (U.S. EPA) has authorized the Executive Secretary to issue such a permit under Section 3006(b) of the Resource Conservation and Recovery Act (RCRA). The Permittee shall comply with all the terms and conditions of this permit and in the Attachments 1 through 9. The Permittee must comply with all applicable State regulations including R315-1 through R315-14, R315-50, R315-101, and R315-102. Applicable rules are those which are in effect on the date of issuance of this permit. This permit is based upon the administrative record, as required by R315-3-24(d). The Permittee’s failure in the application or during the permit issuance process to disclose fully all relevant facts, or the Permittee’s misrepresentation of any relevant facts at any time, shall be grounds for the termination or modification of this permit, the initiation of an enforcement action, including criminal proceedings, or any combination of these remedies. The Permittee must inform the Executive Secretary for the Utah Solid and Hazardous Waste Control Board (Executive Secretary) of any deviation from the permit conditions or changes in the information on which the application is based which would affect the Permittee’s ability to comply, or actual compliance with the applicable regulations or permit conditions or which alters any condition of this permit in any way. The Executive Secretary shall enforce all conditions of this permit which are designated in this permit as State requirements. Any challenges of any permit condition that concern State requirements shall be appealed to the Utah Solid and Hazardous Waste Control Board in accordance with the Utah Code Annotated. This permit is effective as dated and shall remain in effect for ten (10) years, unless revoked and reissued, pursuant to R315-3-15 or terminated, pursuant to R315-3-16 or continued in accordance with R315-11(d). SIGNED BY DENNIS DOWN ON AUGUST 31, 2007 ______________________________________ ________________________ Dennis R. Downs Date Executive Secretary Utah Solid and Hazardous Waste Control Board Chevron U.S.A. Products Company Chevron Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 D-1 DEFINITIONS For purposes of this permit, terms used herein shall have the same meaning as those in R315-2, 3, 4, and 8, unless this permit specifically provides otherwise; where terms are not defined in the regulations or the permit, the meaning associated with such terms shall be defined by a standard dictionary reference or the generally accepted scientific or industrial meaning of the term. “Approved” means written approval from the Executive Secretary of the Utah Solid and Hazardous Waste Control Board. “Control Board” means the Utah Solid and Hazardous Waste Control Board. “Day(s)” means sequential calendar days. “Executive Secretary” means the Executive Secretary of the Utah Solid and Hazardous Waste Control Board. “Facility” means all contiguous land and structures, other appurtenances and improvements on the land, used for treating, storing or disposing of hazardous waste. A facility may consist of several treatment, storage, and disposal operational units (eg. one or more landfills, surface impoundments, or combinations of them). “Facility Plan Approval” means a written approval (referred to as a permit) to operate a hazardous waste treatment, storage, or disposal facility within the State of Utah. “Groundwater Treatment System” means all the parts of the system that are used to extract, treat, or inject groundwater. “Groundwater Treatment Unit” means all parts of the groundwater treatment system where the groundwater is treated to remove hazardous constituents. “Hazardous waste constituent” means a constituent that caused the Control Board or the Executive Secretary to list the hazardous waste in R315-2 or R315-50-10. “Hazardous waste” means a solid waste, or combination of solid wastes, which, because of its quantity, concentration, or physical, chemical, or infectious characteristics may cause, or significantly contribute to, an increase in mortality or an increase in serious irreversible, or incapacitating reversible illness; or pose a substantial present or potential hazard to human health or the environment when improperly treated, stored, transported, or disposed of, or otherwise managed. Chevron U.S.A. Products Company Chevron Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 D-2 “Miscellaneous unit” means a hazardous waste management unit where hazardous waste is treated, stored, or disposed of and is not a container, tank, surface impoundment, pile, land treatment unit, landfill, incinerator, boiler, industrial furnace, underground injection well with appropriate technical standards under 40 CFR part 146, or unit eligible for a research, development, and demonstration permit under § 270.65. “Precipitation” means rain, snow, sleet, or hail. “Release” means any spilling, leaking, pouring, emitting, emptying, discharging, injecting, pumping, escaping, leaching, dumping, or disposing of hazardous wastes (including hazardous waste constituents) into the environment (including the abandonment or discarding of barrels, containers, and other closed receptacles containing hazardous wastes or hazardous waste constituents). “Solid Waste Management Unit” (SWMU) means any discernible unit at which solid wastes have been placed at any time, irrespective of whether the unit was intended for the management of solid or hazardous waste. Such units include any area at a facility at which solid wastes have been routinely and systematically released. “Submit” or “Submission” means to be received by hand-delivery, mail, certified mail, express mail, or facsimile and logged in at the offices of the Division of Solid and Hazardous Waste. “Surface impoundment” or “Impoundment” means a facility or part of a facility which is a natural topographic depression, man-made excavation, or diked area formed primarily of earthen materials (although it may be lined with man-made materials), which is designed to hold an accumulation of liquid waste or waste containing free liquids, and is not an injection well. Examples of surface impoundments are holding, storing, settling, and aeration pits, ponds and lagoons. “Utah Registered or Registered Professional Engineer” means any individual who is registered as a Professional Engineer by any state’s Department of Business Regulation or its equivalent and is qualified by experience and education in the appropriate engineering field. Chevron U.S.A. Products Company Chevron Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Table of Contents - Page 1 TABLE OF CONTENTS Section Page DEFINITIONS ............................................................................................................................D-1 MODULE I - STANDARD CONDITIONS I.A. EFFECT OF PERMIT ......................................................................................................I-1 I.B. LOCATION ......................................................................................................................I-1 I.C. NO WAIVER OF AUTHORITY ......................................................................................I-1 I.D PERMIT ACTION ............................................................................................................I-1 I.E. SEVERABILITY...............................................................................................................I-2 I.F. DUTIES AND REQUIREMENTS ...................................................................................I-2 I.F.1 Duty to Comply .....................................................................................................I-2 I.F.2 Duty to Reapply .....................................................................................................I-2 I.F.3 Review of Permit ...................................................................................................I-2 I.F.4 Permit Expiration ..................................................................................................I-2 I.F.5 Need to Halt or Reduce Activity Not a Defense ....................................................I-3 I.F.6 Duty to Mitigate .....................................................................................................I-3 I.F.7 Proper Operation and Maintenance .......................................................................I-3 I.F.8 Duty to Provide Information ..................................................................................I-3 I.F.9 Inspection and Entry ..............................................................................................I-3 I.F.10 Reporting Planned Changes ...................................................................................I-4 I.F.11 Reporting Anticipated Non-Compliance ...............................................................I-4 I.F.12 Transfer of Permit ..................................................................................................I-4 I.F.13 Monitoring and Records ........................................................................................I-5 I.F.14 Twenty-four Hour Reporting .................................................................................I-6 I.F.15 Monitoring Reports ..............................................................................................I-7 I.F.16 Compliance Schedules ...........................................................................................I-7 I.F.17 Submittal of Schedules ..........................................................................................I-7 I.F.18 Transfer of Reports ................................................................................................I-7 I.F.19 Biennial Report ......................................................................................................I-8 I.F.20 Other Non-Compliance .........................................................................................I-8 I.F.21 Other Information ..................................................................................................I-8 I.F.22 Certification of Construction or Modification ..................................................... 1-8 I.G SIGNATORY REQUIREMENT ......................................................................................I-8 I.H CONFIDENTIAL INFORMATION .................................................................................I-9 Chevron U.S.A. Products Company Chevron Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Table of Contents - Page 2 Table of Contents (Continued) Section Page I.I DOCUMENTS TO BE MAINTAINED AT FACILITY SITE ........................................I-9 I.J PROTECTION OF HUMAN HEALTH AND THE ENVIRONMENT ..........................I-9 MODULE II - GENERAL FACILITY STANDARDS II.A POST-CLOSURE MAINTENANCE AND MONITORING ..........................................II-1 II.B SECURITY ......................................................................................................................II-1 II.C PERSONNEL TRAINING ..............................................................................................II-2 II.D GENERAL INSPECTION REQUIREMENTS ...............................................................II-2 II.E CONTINGENCY AND SPILL MITIGATION PLAN ....................................................II-3 II.E.1 Content of Plan .....................................................................................................II-3 II.E.2 Implementation of Plan .........................................................................................II-4 II.E.3 Copies of Plan .......................................................................................................II-4 II.E.4 Amendments to Plan .............................................................................................II-4 II.F RECORD KEEPING AND REPORTING ......................................................................II-4 II.G FINANCIAL ASSURANCE FOR CLOSURE/POST-CLOSURE .................................II-4 II.H LIABILITY REQUIREMENTS ......................................................................................II-4 II.I INCAPACITY OF PERMITTEE, GUARANTORS OF FINANCIAL INSTITUTIONSII-5 MODULE III - POST-CLOSURE CARE AND USE OF PROPERTY III.A POST-CLOSURE CARE ................................................................................................III-1 III.B COST ESTIMATES FOR THE FACILITY POST-CLOSURE CARE..........................III-1 III.C FINANCIAL ASSURANCE FOR FACILITY CLOSURE ............................................III-2 III.D INSPECTIONS ...............................................................................................................III-2 III.E USE OF PROPERTY .....................................................................................................III-2 III.F AMENDMENT OF PLAN .............................................................................................III-3 MODULE IV - GROUNDWATER MONITORING IV.A POST-CLOSURE GROUNDWATER MONITORING ...............................................IV-1 IV.B REQUIRED PROGRAM ...............................................................................................IV-2 IV.C INDICATOR PARAMETERS AND MONITORING CONSTITUENTS ...................IV-2 Chevron U.S.A. Products Company Chevron Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Table of Contents - Page 3 Table of Contents (Continued) Section Page IVD GROUNDWATER MONITORING REQUIREMENTS ..............................................IV-4 IV.E STATISTICAL PROCEDURES ...................................................................................IV-8 IV.F MONITORING PROGRAM AND DATA EVALUATION .........................................IV-9 IV.G SPECIAL REQUIREMENTS IF SIGNIFICANT INCREASES OCCUR IN VALUES FOR PARAMETERS OR CONSTITUENTS .............................................................IV-10 IV.H RECORD KEEPING AND REPORTING ..................................................................IV-11 IV.I ASSURANCE OF COMPLIANCE .............................................................................IV-12 IV.J REQUEST FOR PERMIT MODIFICATION .............................................................IV-12 MODULE V - GROUNDWATER CORRECTIVE ACTION V.A CORRECTIVE ACTION PROGRAM SUBMITTAL ...................................................V-1 V.B CORRECTIVE ACTION IMPLEMENTATION ............................................................V-1 V.B DURATION OF CORRECTIVE ACTION PROGRAM ................................................V-1 V.D COST ESTIMATES FOR CORRECTIVE ACTION.......................................................V-1 MODULE VI - CORRECTIVE ACTION FOR SOLID WASTE MANAGEMENT UNITS SCHEDULE OF COMPLIANCE VI.A SOLID WASTE MANAGEMENT UNITS ...................................................................VI-1 VI.B STANDARD CONDITIONS .........................................................................................VI-1 VI.C RCRA FACILITY INVESTIGATION ..........................................................................VI-2 VI.D INTERIM MEASURES AND VOLUNTARY CLEAN UP ACTIONS .......................VI-3 VI.E NOTIFICATION REQUIREMENTS FOR AND ASSESSMENT OF NEWLY- IDENTIFIED SOLID WASTE MANAGEMENT UNITS ............................................VI-4 VI.F DETERMINATION OF NO FURTHER ACTIONS ....................................................VI-7 VI.G CORRECTIVE ACTION PLAN................................................................................... VI-7 VI.H REPORTING REQUIREMENTS .................................................................................VI-8 VI.I MODIFICATION OF THE CORRECTIVE ACTION SCHEDULE OF COMPLIANCE ........................................VI-9 Chevron U.S.A. Products Company Chevron Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Table of Contents - Page 4 Table of Contents (Continued) Section Page TABLES IV-1 GROUNDWATER MONITORING PARAMETERS AND CONSTITUENTS ..........IV-3 IV-2 SCHEDULE OF COMPLIANCE ................................................................................IV-12 VI-1 CORRECTIVE ACTION COMPLIANCE SCHEDULE ............................................VI-10 ATTACHMENTS 1. WATER DATA COLLECTION QUALITY ASSURANCE PLAN 2. INSPECTION SCHEDULE AND FORMS 3. ADMINISTATIVE RULES FOR WATER WELL DRILLERS Part 655-4-12 – Abandonment Procedures 4. STATISTICAL PROCEDURES - Mann-Kendall Trend analysis 5. SWMU STATUS SUMMARY Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 1 MODULE I - STANDARD CONDITIONS I.A. EFFECT OF PERMIT I.A.1. The Permittee shall inspect and monitor the Reservoir Waste Management Area (RWMA). Any treatment, storage, or disposal not in accordance with the conditions of this permit is prohibited. Issuance of this permit does not convey property rights of any sort or any exclusive privilege; nor does it authorize any injury to persons or property, any invasion of other private rights, or any infringement of State or local laws or regulations. Compliance with the terms of this permit does not constitute a defense to any order issued or any action brought under Section 3013 or Section 7003 of RCRA, Section 106 (a) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (42 U.S.C. 9606 (a), commonly known as CERCLA or Superfund), or any other law providing for protection of human health or the environment. The terms and provisions of the Corrective Action Order (CAO) as they apply to the RWMA are superseded by this Permit, and the issuance of this Permit constitutes notification by the Executive Secretary that the CAO is terminated as to the RWMA as provided in paragraph 74 of the CAO. I.B. LOCATION I.B.1. The (RWMA) is located east of Pond #3 and west of the Southwest Tank Farm within the property boundaries of the Chevron Salt Lake Refinery, Davis County, Utah (the Facility). Figure 1-1 in Attachment 1 is a Facility map showing the RWMA. I.C. NO WAIVER OF AUTHORITY I.C.1. Other Authority. The Executive Secretary or authorized representative expressly reserves any right of entry provided by law and any authority to order or perform emergency or other response activities as authorized by law. I.D. PERMIT ACTIONS I.D.1. This permit may be modified, revoked and reissued, or terminated for cause as specified in R315-3-4 of the Utah Administrative Code (the Rules). The filing of a request for a permit modification, revocation and reissuance, or termination, or the Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 2 notification of planned changes or anticipated non-compliance on the part of the Permittee does not stay the applicability or enforceability of any permit condition. I.D.2. The permit may be modified at the request of the Permittee according to the procedures of R315-3-4.3. I.D.3. All permit conditions within this permit will supersede conflicting statements, requirements, or procedures found within the attachments of this permit. I.E. SEVERABILITY I.E.1. The provisions of this permit are severable, and if any provision of this permit, or the application of any provision of this permit to any circumstance is held invalid, the application of such provision to other circumstances and the remainder of this permit shall not be affected thereby. Invalidation of any state or federal statutory or regulatory provision which forms the basis for any condition of this permit does not affect the validity of any other state or federal statutory or regulatory basis for said condition. I.F. DUTIES AND REQUIREMENTS I.F.1. Duty to Comply The Permittee shall comply with all conditions of this permit, except to the extent and for the duration such non-compliance is authorized by an emergency permit. Any permit non-compliance, other than non-compliance authorized by an emergency permit, constitutes a violation of the Utah Administrative Rules and may be grounds for enforcement action, permit termination, revocation and reissuance, or modification of the permit. I.F.2 Duty to Reapply. If the Permittee wishes, or is required by the Control Board or the Executive Secretary, to continue an activity allowed by this permit after the expiration date of this permit, the Permittee shall submit a complete application for a new permit at least one hundred eighty (180) days before this permit expires. I.F.3 Review of Permit. In accordance with the Utah Solid and Hazardous Waste Act, UCA 19-6-108(13), this permit shall be reviewed five (5) years after the effective date and modified, as deemed necessary by the Executive Secretary. I.F.4 Permit Expiration. The permit will expire ten years (10) years from the date of issuance. This permit and all conditions herein will remain in effect beyond the permit's expiration date if the Permittee has submitted a timely, complete application Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 3 and through no fault of the Permittee, the Executive Secretary has not issued a new permit as set forth in R315-3-5. I.F.5. Need to Halt or Reduce Activity Not a Defense. It shall not be a defense for the Permittee, in an enforcement action that it would have been necessary, to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. I.F.6. Duty to Mitigate. In the event of non-compliance with the permit, the Permittee shall take all reasonable steps to minimize releases to the environment and shall carry out such measures as are reasonable to prevent significant adverse impacts on human health or the environment. I.F.7. Proper Operation and Maintenance. The Permittee shall, at all times properly operate and maintain all facilities and systems of treatment, control and monitoring (and related apparatus) which are installed or used by the Permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance includes effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems only when necessary to achieve compliance with the conditions of the permit. I.F.8. Duty to Provide Information. The Permittee shall furnish to the Control Board or the Executive Secretary, within a reasonable time, any relevant information which the Control Board or the Executive Secretary may request, to determine whether cause exists for modifying, revoking or reissuing this permit, or to determine compliance with this permit. The Permittee shall also furnish to the Control Board or the Executive Secretary upon request, copies of records required to be kept by this permit. I.F.9. Inspection and Entry. Pursuant to R315-2-12 and UCA 19-06-109, the Permittee shall allow the Control Board, the Executive Secretary, or an authorized representative, upon the presentation of credentials and other documents as may be required by law to: I.F.9.a. Enter at reasonable times upon the Permittee's premises where a regulated activity is located or conducted, or where records must be kept under the conditions of this permit, Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 4 I.F.9.b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit, I.F.9.c. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this permit, I.F.9.d. Sample or monitor, at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the Utah Solid and Hazardous Waste Act, any hazardous waste or hazardous waste constituents at any location; and I.F.9.e. Make a record of inspections by photographic, electronic, videotape, or any other reasonable medium in compliance with established safety and security requirements. I.F.10. Reporting Planned Changes. The Permittee shall give written notice to the Executive Secretary prior to any planned physical alterations or additions to any hazardous waste management unit or system being permitted or previously permitted in accordance with R315-3-3.1(l)(1). Planned physical alterations or additions shall include all changes in any hazardous and solid waste activity and to any non-waste underground storage tanks regulated under R311-202 (40 CFR 280). Construction or operation of new or modified hazardous waste units shall not begin unless the provisions of R315-3-3.1(l)(1) are met. Failure to comply with this permit condition may constitute a violation of the Rules. I.F.11. Reporting Anticipated Non-compliance. The Permittee shall give advance notice to the Executive Secretary of any planned changes in the permitted facility or activity, which may result in non-compliance with requirements of this permit in accordance with R315-3-3.1(l)(2). Advance notice shall not constitute a defense for any non- compliance. I.F.12. Transfer of Permit. This permit may be transferred to a new Permittee, only if it is modified or revoked and reissued pursuant to R315-3-4.1. Before transferring ownership or operation of the facility during its operating life, the Permittee shall notify the new Permittee in writing of the requirements of R315-1 through R315-14, R315-50 and R315-101. I.F.13. Monitoring and Records I.F.13.a. The Permittee shall retain at the Facility a minimum of all records applicable to the Water Data Collection Quality Assurance Plan in Attachment 1, Section 2.8 Records Management. Other analytical records and information, including calibration and Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 5 maintenance records may be retained by the laboratory performing analytical services, and where applicable, all original strip chart recordings (or equivalent recordings) for continuous monitoring instrumentation, copies of all reports and records required by this permit, and the waste minimization certification required by R315-8-5.3. (40 CFR  264.73(b)(9) incorporated by reference), and records of all data used to complete the application for this permit for a period of at least three (3) years from the date of the sample, measurement, report, certification, or recording unless a longer retention period for certain information is required by other conditions of this permit. These periods may be extended by request of the Executive Secretary at any time by written notification to the Permittee and the retention times are automatically extended during the course of any unresolved enforcement action regarding the Facility to three (3) years beyond the conclusion of the enforcement action. I.F.13.b. A request for substitution of an analytical method, which is equivalent to the method specifically approved for use in this permit, shall be submitted to the Executive Secretary in accordance with R315-2-15. The request shall provide information demonstrating that the proposed method, requested to be substituted, is equivalent or superior in terms of sensitivity, accuracy, and precision (i.e. reproducibility). This Permit shall also be modified in accordance with Condition I.D.2 I.F.13.c. The Permittee shall retain at the Facility copies of all reports and records required by this permit, and records of all data used to complete the application for this permit for the duration of the post-closure period. This period may be extended by request of the Executive Secretary at any time and is automatically extended during the course of any unresolved enforcement action regarding this facility. I.F.13.d. Pursuant to R315-3-3.1(j), records of monitoring information shall specify at a minimum: I.F.13.d.i. The date(s), exact place, and times of sampling or measurements; I.F.13.d.ii. The name(s), title(s), and affiliation of individual(s) who performed the sampling or measurements; I.F.13.d.iii. The dates analyses were performed; I.F.13.d.iv. The individual(s) who performed the analyses; I.F.13.d.v. The analytical techniques or methods used; and Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 6 I.F.13.d.vi. The results of such analyses. I.F.13.d.vii. Samples and measurements taken for the purpose of monitoring shall be representative of the monitored activity. The method used to obtain a representative sample to be analyzed shall be the appropriate method from R315-50-6 or an equivalent method approved by the Executive Secretary. Laboratory methods shall be those specified in Test Methods for Evaluating Solid Waste: the most current edition of Physical/Chemical Methods SW-846 (hereafter, referred to as SW-846), and Standard Methods of Examination of Water and Wastewater. I.F.14. Twenty-four (24) Hour Reporting. The Permittee shall report to the Executive Secretary any non-compliance with the permit, which may endanger human health or the environment. Any such information shall be reported orally within twenty-four (24) hours from the time the Permittee becomes aware of the circumstances. This report shall include, but not be limited to, the following: I.F.14.a. Information concerning the release of any hazardous waste, which may endanger public drinking water supplies: I.F.14.b. Information concerning the release or discharge of any hazardous waste at the facility which could threaten the environment or human health inside and outside the facility. The description of the occurrence and its cause shall include: I.F.14.b.i. Name, address, and telephone number of the Permittee; I.F.14.b.ii. Name, address, and telephone number of the facility; I.F.14.b.iii. Date, time and type of incident; I.F.14.b.iv. Name and quantity of materials involved; I.F.14.b.v. The extent of injuries, if any; I.F.14.b.vi. An assessment of actual or potential hazard to the environment and human health outside the facility, where this is applicable; and I.F.14.b.vii. Estimated quantity and disposition of recovered material that resulted from the incident. A written submittal shall also be provided to the Executive Secretary within five (5) days of the time the Permittee becomes aware of the circumstances. The written submission shall contain, but not be limited to: Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 7 • a description of the non-compliance and its cause; • the periods of non-compliance (including exact dates and times); • whether the non-compliance has been corrected; and if not, • the anticipated time it is expected to continue and • steps taken or planned to reduce, eliminate, and prevent recurrence of the non-compliance. The Permittee need not comply with the five (5) day written submission requirement if the Executive Secretary waives the requirement and the Permittee submits a written report within fifteen (15) days of the time the Permittee becomes aware of the circumstances. I.F.14.c. The Permittee shall comply with the reporting requirements outlined in R315-9 at the time of the incident. The Permittee shall additionally notify the Davis County Health Department of any spill requiring reporting as outlined in this condition. I.F.15. Monitoring Reports. Monitoring reports shall be reported at the intervals specified in Table IV-2 in this permit. I.F.16. Compliance Schedules. Reports of compliance or non-compliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this permit shall be submitted no later than fourteen (14) days following each scheduled date. I.F.17. Submittal of Schedules. The reports indicated in I.F.16 shall be submitted to the Executive Secretary. I.F.18. Transfer of Reports. These reports shall be submitted using the United States Postal Service, any licensed delivery service, facsimile, computer diskette or hand-delivered by the Permittee, to be logged in at the office of the Division of Solid and Hazardous Waste. I.F.19. Biennial Report. A biennial report shall be submitted covering facility activities during odd numbered calendar years. This report shall be submitted by March 1 of the following even numbered year (see R315-8-5.6). I.F.20. Other Non-compliance. The Permittee shall report all other instances of non- compliance not otherwise required to be reported above, at the time monitoring reports, as required by this permit, are submitted. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 8 I.F.21. Other Information. Whenever the Permittee becomes aware that he failed to submit any relevant facts in the permit application, or submitted incorrect information in a permit application or in any report to the Executive Secretary, the Permittee shall submit such facts or corrected information within seven (7) working days. I.F.22. Certification of Construction or Modification. The Permittee may not commence storage, treatment, or disposal of hazardous waste in a new hazardous waste management unit or an existing unit being modified at the permitted facility until: I.F.22.a. The Permittee has submitted to the Executive Secretary: I.F.22.a.i. A letter signed by the Permittee and a qualified Utah registered professional engineer stating that the unit has been constructed in compliance with this permit; and I.F.22.a.ii. As-built engineering plans and specifications; and I.F.22.b. The Executive Secretary has reviewed and inspected the newly constructed facility and has notified the Permittee in writing that the unit was found in compliance with the conditions of this permit; or I.F.22.c. The Executive Secretary has either waived the inspection, or has not within fifteen (15) days of the date of his receipt of the above submittal, notified the Permittee of an intent to inspect. I.G. SIGNATORY REQUIREMENT I.G.1. All reports or other information requested by the Executive Secretary shall be signed and certified as required by R315-3-3.1(k). Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module I - Page 9 I.H. CONFIDENTIAL INFORMATION I.H.1. The Permittee may claim confidential any information required to be submitted by this permit in accordance with Utah Administrative Code 19-1-306. I.I. DOCUMENTS TO BE MAINTAINED AT FACILITY SITE I.I.1. The Permittee shall maintain at the Facility for the duration of the post-closure care permit, the following documents and amendments, revisions, and modifications to these documents: I.I.1.a. The post-closure permit application. I.I.1.b. Post-closure monitoring records, to include groundwater monitoring records and analytical results, groundwater treatment system unit records and analytical results, and records of the effectiveness of the groundwater treatment system, as required by this permit; I.I.1.c. Certification of closure as required by R315-7-14; I.I.1.d. Personnel training documents and records as required by R315-8-2.7(d) and this permit; I.I.1.e. Inspection schedules as required by R315-8-2.6(b) and this permit; I.I.1.f. All applicable portions of the Operating Record requirements of R315-8-5.3 and this permit and; I.I.1.g. Manifest copies as required by R315-5-2.23 and R315-5-4.40(a) and this permit. I.J. PROTECTION OF HUMAN HEALTH AND THE ENVIRONMENT I.J.1. Pursuant to Section 3005(c)(3) of RCRA (Section 212 of HSWA), codified as 40 CFR 270.32(b), and R315-3-3.3(b), this permit contains those terms and conditions determined necessary to protect human health and the environment. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module II - Page 1 MODULE II - GENERAL FACILITY STANDARDS II.A. POST-CLOSURE MAINTENANCE AND MONITORING II.A.1. The Permittee shall inspect and monitor the RWMA, throughout the post-closure care period, which commences on the effective date of this permit, in a manner that will ensure detection of a release of either of the following: hazardous waste, hazardous waste constituents, leachate, contaminated runoff or hazardous waste decomposition products to the soil, groundwater, or surface water from the closed facility. The Permittee shall maintain all treatment, containment and monitoring equipment throughout the post-closure care period in a manner that will ensure detection of a release from the closed facility and minimize the possibility of a fire, explosion, or any sudden or non-sudden release of hazardous waste constituents to air, soil, or surface water which could threaten human health or the environment. II.B. SECURITY II.B.1. The Permittee shall comply with the following security conditions: II.B.1.a. At a minimum, one ¼-inch galvanized steel cable with a polyethylene sheath or chain extended between treated wood posts (at twelve (12) foot centers) shall be erected around and enclose the entire RWMA. This must serve as a deterrent to unauthorized entry and be maintained throughout the post-closure period. II.B.1.b. Signs which read: WARNING RCRA CLOSURE CELL NO UNAUTHORIZED PERSONS ALLOWED shall be positioned every one hundred (100) feet on the steel cable, supported by posts, surrounding the RWMA boundary and shall be maintained throughout the post-closure care period. The signs shall be legible from a distance of at least twenty five (25) feet in compliance with R315-8-2.5(c). The signs shall be inspected throughout the post-closure care period as part of the annual RWMA inspection program. The Permittee shall utilize the annual inspection checklist for items (i.e. cable/chain postings, signs of vandalism, etc.) to be inspected as required and specified by Condition II.D.1. The RWMA annual checklist is provided in Attachment 2. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module II - Page 2 II.B.2. The Permittee shall comply with all other security procedures as specified in the appropriate annex of the Chevron Products Company, Salt Lake Refinery, Integrated Contingency Plan (See II.C below). II.C. PERSONNEL TRAINING II.C.1. The Permittee maintains a detailed Emergency Action Plans and Procedures Manual as part of the Integrated Contingency Plan (ICP). The ICP is a comprehensive emergency procedure document that covers responses to any emergency that may occur at the Facility. The training, for both current and new employees relating to the RWMA and the training records portion provided as Annex 5 of the ICP shall be acceptable in fulfilling the training requirements of this section. The training and training recording procedures in the ICP exceed the conditions required in R315-8-2.7. Reference is made here to the ICP as it is a large multi-volume document and is therefore, not provided as an appendix to this Permit. II.D. GENERAL INSPECTION REQUIREMENTS II.D.1. The Permittee shall perform an annual inspection of the RWMA. The annual inspection will be performed in October or November of each year. Reports shall be submitted using the inspection form provided in Attachment 2. II.D.2. Upon discovering any deterioration or malfunction of the RWMA that may result in a threat to human health or the environment, the Permittee shall remedy said threat as required by R315-8-2.6(c) within seventy-two (72) hours. If the remedy requires more time, the Permittee shall submit to the Executive Secretary, before the expiration of the seventy-two (72) hour period, a proposed time schedule for correcting the problem. II.D.3. Records of inspections shall be kept at the Facility as required by R315-8-2.6(d). II.D.4. The Permittee shall inspect the closed portions of the facility within twenty-four (24) hours after a major storm event, and document such in the inspection log as a storm event inspection. For the purposes of inspections, a storm event shall be defined as precipitation in excess of Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module II - Page 3 0.75 inches per twenty-four (24) hours or wind speed in excess of eighty (80) miles per hour. II.D.5. The Permittee shall use the National Weather Service, located at the Salt Lake International Airport, as the weather station of record. II.D.6. During the annual groundwater sampling event, the Permittee shall inspect all permit-listed monitor wells identified in Chapter 4.2 of Attachment 1, that are part of the facility-wide groundwater monitor system as specified below: II.D.6.a. Inspect for damage to the above ground casing, II.D.6.b. Inspect for damage to concrete apron and assure that the annulus is properly sealed, II.D.6.c. If permanent, dedicated pumps are used, verify proper operation, II.D.6.d. Check for visible damage and tampering to locks and monitor well caps and; II.D.6.e. Insure that the wells are labeled, accessible and visible to all appropriate personnel. II.D.7. Upon discovering any deterioration or malfunction of any permit-listed monitoring well, that may result in a threat to human health or the environment or jeopardize its integrity, the Permittee shall notify the Executive Secretary within seventy-two (72) hours. If the remedy requires more time, the Permittee shall submit to the Executive Secretary, before the expiration of the seventy-two (72) hour period, a proposed time schedule for correcting the problem. II.E. CONTINGENCY AND SPILL MITIGATION PLAN II.E.1. Content of Plan. The Permittee shall follow the Integrated Contingency Plan (ICP). The ICP is a comprehensive emergency procedures document that covers planning and response to any emergency that may occur at the Facility. Included in the ICP is the Spill Prevention Control and Countermeasures Plan and the Facility Response Plan required by 40 CFR 112 for the release of oil. Reference is made to the ICP for details on the Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module II - Page 4 Facility contingency and spill mitigation plan. II.E.2. Implementation of Plan. As specified in the ICP, the Permittee shall immediately carry out the provisions which follows the emergency procedures described by R315-8-4.7. The Permittee shall also comply with R315-9-4 in reporting releases to the Executive Secretary. II.E.3. Copies of Plan. The Permittee shall comply with the requirements of R315-8-4.4. All necessary Federal, State and Local agencies have copies of the portions of the ICP relevant to their involvement during an incident. II.E.4. Amendments to Plan. The Permittee shall review and immediately amend, if necessary, the ICP, as required by R315-8-4.5. II.F. RECORD KEEPING AND REPORTING II.F.1. The Permittee shall submit reports as required to the Executive Secretary documenting annual post-closure groundwater monitoring activities and results from analyses of samples collected during such monitoring. Copies of all appropriate records will be maintained at the Facility. II.G. FINANCIAL ASSURANCE FOR CLOSURE/POST-CLOSURE II.G.1. The Permittee shall maintain continuous compliance with R315-8-8. II.H. LIABILITY REQUIREMENTS II.H.1. The Permittee shall demonstrate continuous compliance with the requirements of R315-8-8, including the requirements to have and maintain hazardous waste liability coverage for sudden accidental occurrences in the amount of at least $1 million U.S. dollars per occurrence with an annual aggregate of at least $2 million U.S. dollars, exclusive of legal defense costs. Changes in liability coverage mechanisms shall be approved by the Executive Secretary pursuant to R315-8-8, at least sixty (60) days prior to such a change. II.H.2. The Permittee shall demonstrate continuous compliance with the requirements of 40 CFR 264.147(b) to have and maintain liability coverage for non-sudden accidental occurrences in the amount of at least Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module II - Page 5 $3 million per occurrence, with an annual aggregate of at least $6 million, exclusive of legal defense costs. II.I. INCAPACITY OF PERMITTEE, GUARANTORS OF FINANCIAL INSTITUTIONS II.I.1. The Permittee shall comply with all the provisions of R315-8-8 (as incorporated in 40 CFR 264.148). Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module III - Page 1 MODULE III - POST-CLOSURE CARE AND USE OF PROPERTY III.A. POST-CLOSURE CARE III.A.1. The Permittee shall conduct all post-closure care activities in accordance with the approved post-closure plan as specified in this permit, and in compliance with R315-8-7. III.A.2 Post Closure care of the RWMA shall be in accordance with R315-8-7 and R315-8-11.5. The Permittee shall: III.A.2.a. Maintain the integrity and effectiveness of the RWMA final cover in compliance with R315-7-21.4(b) and Attachment 2 of this permit, including making repairs to the cap as necessary to correct the effects of settling, subsidence, erosion or other events. III.A.2.b. Maintain the groundwater monitoring system and monitor the groundwater in compliance with R315-8-11.5(b)(2) for the RWMA and Module IV and Module V of this permit. III.A.2.c. Prevent run-on and run-off from eroding or otherwise damaging the final covers in compliance with R315-8-14.5(b)(5) or R315-8-13.8(a). III.A.2.d. Prohibit post-closure use of the property, which will disturb the integrity of the final cover, containment systems, or monitoring system in compliance with R315-8-7. III.A.2.e. Protect and maintain records and surveyed benchmarks used in complying with R315-8-13.7 and R315-8-14.4. III.B. COST ESTIMATES FOR THE FACILITY POST-CLOSURE CARE III.B.1. The Permittee's post-closure cost estimate shall be prepared in accordance with R315-8-8. III.B.2. Within ninety (90) days after the end of each Chevron Salt Lake Refinery fiscal year, the Permittee shall adjust the post-closure cost estimate for inflation and submit a copy of that adjusted post-closure cost estimate to Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module III - Page 2 the Executive Secretary, and maintain the latest adjusted post-closure cost estimate in the Operating Record. III.B.3. The Permittee shall revise the post-closure cost estimate whenever there is a change in the facility's post-closure plan as required by R315-8-8. III.B.4. The Permittee shall keep at the facility the latest post-closure cost estimate as required by R315-8-8 as part of the facility Operating Record. III.C. FINANCIAL ASSURANCE FOR FACILITY CLOSURE III.C.1. The Permittee shall demonstrate continuous compliance with R315-8-8 by providing documentation of financial assurance, as required by R315-8-8. Changes in financial assurance mechanisms shall be approved by the Executive Secretary pursuant to R315-8-8 at least sixty (60) days prior to such a change. III.D. INSPECTIONS III.D.1. Inspections will be conducted during the post-closure care period in compliance with the procedures specified in Condition II.D and as specified in Attachment 2. All records of inspections and remedial actions shall be retained in the Operating Record at the Facility throughout the post-closure care period. Any deterioration or malfunction discovered by an inspection will be remedied in compliance with R315-8-2.6(c). III.E. USE OF PROPERTY III.E.1. Within sixty (60) days after this permit is issued the Permittee shall submit to the Davis County Recorder and to the Executive Secretary: III.E.1.a. A record of the type, location, and quantity of hazardous waste disposed of within the RWMA to the best of his knowledge and in accordance with any records he has kept. III.E.2. The Permittee shall record, in accordance with State law, a notation on the deed to the facility property, or on some other instrument which is normally examined during title search, that will in perpetuity notify any potential purchaser of the property that: Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module III - Page 3 III.E.2.a. The land use at the RWMA is for management of stabilized hazardous waste; III.E.2.b. Land use is restricted under R315-7-14; III.E.2.c. The survey plat and record of the type, location, and quantity of hazardous waste disposed of within the RWMA required by R315-7-14 have been filed with the local zoning authority with jurisdiction over local land use and with the Executive Secretary; and III.E.2.d. A submitted certification signed by the Permittee verifying that he has recorded the notation in the deed (as specified in R315-7-14) and a copy of the document in which the notation has been placed in the deed shall be submitted to the Executive Secretary. III.F. AMENDMENT OF PLAN III.F.1. The Permittee shall amend the post-closure plan in accordance with R315-8-7 whenever necessary or when required to do so by the Executive Secretary. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 1 MODULE IV - GROUNDWATER MONITORING IV.A. POST-CLOSURE GROUNDWATER MONITORING IV.A.1. The Permittee shall monitor groundwater in the uppermost aquifer as described in Attachment 1 and as described below, in a manner that will monitor the release of hazardous constituents from the RWMA in compliance with R315-8-6. IV.A.2. Solid waste management units (SWMUs) may be subject to provisions of this Module. The Executive Secretary shall determine which SWMUs may be subject to some or all of the provisions of this Module. The Permittee shall comply with the provisions of R315-8-6.12. IV.A.3. The Permittee shall follow all of the provisions listed under R315-8-6, Groundwater Protection as defined by the conditions of this permit. For the purposes of this permit, groundwater protection shall apply to the RWMA, the Groundwater Management Area (GWMA) and the Landfill Waste Management Area (LWMA). IV.A.4. The Point of Compliance for the RWMA is a vertical surface located at the hydraulically downgradient boundary of the RWMA landfill cell. The present compliance point monitor wells are listed in Condition IV.A.5. Maps showing the location of the compliance monitor wells for the RWMA are provided as Figures 1- 2 and 1-4 in Attachment 1. Maps in Attachment 1 shall be updated if any well locations change in accordance with Condition I.D.2. IV.A.5. Monitor well RWMA-1 shall be considered hydraulically up-gradient for the RWMA and shall serve as background water quality and monitoring data. Monitor wells RWMA-2A and 3 shall serve as compliance point monitor wells along the western boundary of the RWMA landfill cell. RWMA-4 shall serve as the compliance point monitor along the southern boundary of the RWMA landfill cell. The entire monitor well system, identifying each compliance point monitor well location is presented on Figures 1-2 and 1-4 in Attachment 1. The Permittee may add monitor wells as specified in Conditions IV.D.6. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 2 IV.B. REQUIRED PROGRAM IV.B.1 According to R315-8-6.8, the Permittee shall install and maintain a groundwater monitoring system as specified below: IV.B.1.a. Construction and maintenance of all permit-listed monitor wells shall be in accordance with Attachment 1 of the Permit; and IV.B.1.b. All monitor wells abandoned and no longer in use with respect to the monitoring program shall be plugged and abandoned in accordance with the well plugging and abandonment section of the most recent Administrative Rules for Water Well Driller’s, Division of Water Rights, R655-4-12 (Attachment 3). Well plugging and abandonment methods and verification shall be submitted to the Executive Secretary within sixty (60) days from the date the monitor wells are removed from the monitoring program. IV.B.2. As indicated by R315-8-7, the post-closure care period for the RWMA is thirty (30) years from the September 2, 1997 effective date of this permit. If the groundwater protection standard in Condition IV.C is exceeded after thirty (30) years, the Permittee shall continue corrective action as specified in Condition V.B. IV.C. INDICATOR PARAMETERS AND CONSTITUENTS IV.C.1. The Permittee shall sample RWMA monitor wells RWMA-1 through RWMA-4 as described in Attachment 1, for the parameters and constituents identified on Table IV-1. IV.C.2. The Permittee shall sample groundwater for the required parameters or constituents using the analytical methods listed in Table IV-1. Other than the use of an equivalent, updated method, if an alternate test method is to be proposed for use, the procedures in Condition I.F.13.b shall be followed. The Permittee shall also follow procedures specified in Condition I.D.2 for permit modifications. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 3 Table IV-1 GROUNDWATER MONITORING PARAMETERS AND CONSTITUENTS Parameter or Constituent Test Methoda MDLb General Parameters Calcium 6010B 100 Magnesium 6010B 100 Potassium 6010B 300 Sodium 6010B 300 Sulfate 300.0 100,000 Chloride 300.0 5,000 Alkalinity 310.1 2,000 Nitrate + Nitrite as Nc 300.0 80 Fluoride 300.0 500 Sulfide 376.1 10,000 pH 150.1 Report Measured Value Specific Conductance 120.1 Report Measured Value Total Dissolved Solids 160.1 10,000 Oil and Grease 1664 2,200 Metals Arsenic 6010B 500 Cadmium 6010B 40 Chromium 6010B 50 Lead 6010B 40 Volatile Organics Benzene 8260B 5 Ethylbenzene 8260B 5 Toluene 8260B 5 Xylened 8260B 5 Semi-Volatile Organic Benzenethiol 8270C 10 2,4-Dimethylphenole 8270C 10 a - Permittee shall use the most current, equivalent EPA method (I.F.13b). b - Method Detection Limit reported as µg/L unless noted. c- Preserved with sulfuric acid. This converts nitrite to nitrate, but the total Nitrogen remains the same, and is consistent with the Permit’s intent of measuring total Nitrogen. d - Xylene reported as total ortho-, meta-, and para- isomers. e _ To be performed only at LWMA-2. Elimination of this sampling analysis shall be considered when a valid trend of certainty can be justified and analytical anomalies cease for three consecutive annual sampling events. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 4 IV.C.3. For those parameters and constituents in Condition IV.C.2 for which no concentration limit is established at the time the Permit is issued, the Permittee shall establish background values in accordance with R315-8-6.8(g). Background water quality is defined as the groundwater quality immediately upgradient and within the RWMA boundary at the time the project was completed. The use of background water quality upgradient of the Chevron property is not relevant in this permit because the RWMA, itself, lies within the operating area of the Facility and is therefore, not surrounded by soil and groundwater that are representative of naturally occurring, non-impacted conditions. The RWMA, along with the entire facility falls within the GWMA, which is subject to separate groundwater monitoring. IV.C.4. Background groundwater quality for Table IV-1 monitoring parameters or constituents is based on the average of data obtained at each of the four RWMA monitor wells during the first year of quarterly sampling in 1994. As background data, they become the basis against which future analytical results are compared. Due to the availability of the 1994 background data established for the RWMA as concentration limits, and the lack of any significant seasonal-based variations of any Table IV-1 parameter or constituent, annual sampling will adequately monitor for a release from the RWMA and still satisfy the data requirements for the selected statistical method required in Condition IV.E (R315-8-6.8(g)). Therefore, annual sampling shall be implemented at the RWMA by the Permittee pursuant to Condition IV.H.3 upon approval of this Permit by the Executive Secretary. IV.D. GROUNDWATER MONITORING REQUIREMENTS IV.D.1. All monitor wells shall be constructed in accordance with the provisions in Condition IV.D.10. IV.D.2. The groundwater monitoring program shall include sampling and analysis procedures defined in R315-8-6.8(d) and (e). Any modifications shall be submitted to the Executive Secretary for review and approval following Condition I.D.2. IV.D.3. The Permittee shall follow the requirements for measurement of the groundwater surface elevation of R315-8-6.8 (f). IV.D.4. If the Executive Secretary receives information indicating that the surveyed well apron elevations of the wells in the groundwater system(s) as specified in Conditions IV.A.5 and Attachment 1 are inadequate, the Executive Secretary shall require the Permittee to resurvey any or all of these well apron elevations. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 5 IV.D.5. The Permittee shall notify the Executive Secretary orally or in writing at least fifteen (15) working days prior to any sampling event required under this permit. IV.D.6. The Permittee may add new monitor wells as part of the monitor well system only upon approval of the Executive Secretary. Approval for changes to the monitor well system shall constitute a permit modification (except when replacing damaged monitor wells already in the permit). The Permittee shall follow the procedures specified in Condition I.D.2 for modification of the permit. IV.D.7. The Permittee must at all times maintain a monitor well system as specified in Condition IV.A.4. The compliance point monitor wells listed in Condition IV.A.4 may not be removed from the monitor well system without approval of the Executive Secretary and submitting a permit modification as outlined in Condition I.D.2. IV.D.8. The Permittee shall provide for the proper disposal of contaminated groundwater generated during groundwater monitor well sampling and during the development of any new monitor well. Purge and development water shall be placed into labeled drums and be disposed of as outlined in Attachment 1. Typically, purge and development water is disposed of into the Facility wastewater treatment system. IV.D.9. The Permittee shall monitor and sample all groundwater monitor wells for the presence of hazardous constituents identified in Condition IV.C. The monitor wells shall be sampled at a frequency and in a manner consistent with Condition IV.C and IV.F.2. IV.D.10. The Permittee shall locate, install, construct, and maintain new groundwater monitor wells as specified in the Technical Enforcement Guidance Document (TEGD), OSWER-9950.1, September 1986, or the most recent version. All monitor wells shall be cased in a manner that maintains the integrity of the monitor well bore hole. The casing shall be screened or perforated and packed with gravel or sand where necessary, to enable collection of accurate groundwater samples. The annular space above the sand pack must be sealed to the surface to prevent the potential for a contamination pathway from surface sources. IV.D.11. The Permittee shall construct and maintain new monitor wells in accordance with plans and specifications to be submitted to the Executive Secretary for approval. The Executive Secretary will approve in writing the following: number, location, depth, and design of all new monitor wells prior to installation. The Permittee shall follow the procedures specified in Condition I.D.2 for permit modifications. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 6 IV.D.12. Additional groundwater monitor wells shall be installed to maintain compliance if subsurface conditions significantly change after permit issuance. Such changes may include, but are not limited to, water level elevation or apparent flow direction changes, or detection of one of the hazardous constituents in a monitor well. If hazardous waste constituents exceeding the groundwater protection standard concentration limits, as defined in Condition IV.C of this Module, are detected in the furthermost hydraulically downgradient monitor well, the Permittee shall install additional groundwater monitor wells further downgradient. IV.D.13. Upon notification by the Executive Secretary in writing or as a result of a compliance action the Permittee may be required to install and sample additional monitor wells at any time during the post-closure or compliance period if new information or unforeseen circumstances reveal a need for additional monitoring to protect human health and the environment. IV.D.14. The Permittee shall submit monitor well completion reports which include boring logs, standard penetration tests, all analytical tests performed on soils, water level elevations, groundwater contour maps, monitor well development results including recharge rates, cross sections or fence diagrams as well as all other data, to be submitted within ninety (90) days after completion of the monitor wells which are installed after permit issuance. IV.D.15. Existing monitor wells shall be maintained in a fully operational condition for the duration of this permit. The Permittee shall notify the Executive Secretary within seven (7) days when a monitor well is no longer properly functioning or providing credible data. These conditions would include, but are not limited to, the presence of sediment, cracked or damaged well casing, protective steel casing, damaged concrete apron, etc. The Permittee shall submit to the Executive Secretary for approval the specific conditions for replacement or correction of an improperly operating monitor well. IV.D.16. The Permittee shall, on an annual basis measure the depth to the bottom of the RWMA groundwater monitor wells to the nearest one-tenth (0.1) feet. This information shall be recorded on monitor well purging volume calculation sheets. If a problem is discovered, the Permittee shall follow the procedures described above in Condition IV.D.15 regarding notification and corrective procedures. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 7 IV.D.17. The Executive Secretary shall approve the permanent removal of any monitor well listed in IV.A.4 and Attachment 1, or any monitor wells installed after permit issuance following the permit modification procedure of Condition I.D.2. IV.D.18. The Permittee shall use the following techniques and procedures when obtaining samples and analyzing samples to ensure reliable monitoring results from the groundwater monitor wells as required in R315-8-6.8(d): IV.D.18.a. Collect samples from all monitor wells shall in the order and by the techniques described in the Water Data Collection Quality Assurance Plan located in Attachment 1; IV.D.18.b. Preserve all samples in accordance with the respective EPA Method and transported under chain of custody to the analytical laboratory in accordance with the procedures specified in the approved Water Data Collection Quality Assurance Plan in Attachment 1; and IV.D.18.c. Analyze all samples according to test methods identified in Condition IV.C. In addition: IV.D.18.c.i. Establish and implement, for each sampling event under the groundwater monitoring program, quality assurance and quality control (QA/QC) procedures in full detail in accordance with the approved Water Data Collection Quality Assurance Plan in Attachment 1; IV.D.18.c.ii. The Executive Secretary may request at any time all laboratory QA/QC documentation and supporting data on any sampling event. The raw organics information for required sampling and analysis, including organics gas chromatographic printouts, mass spectral analyses, and QA/QC surrogate and spike results shall be retained by the refinery’s Contract laboratory and/or the refinery throughout the post-closure care period; and IV.D.18.c.iii. In case of loss of sample integrity (i.e. breakage, loss), re-sampling shall take place within seven (7) days of notification of the loss and be conducted as outlined in Attachment 1. IV.D.19. The Permittee shall determine the elevation of the groundwater surface at each monitor well within seven (7) days of sampling each monitor well. Water levels shall be collected within twenty four (24) hours from measuring the first monitor well to measuring the last monitor well. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 8 IV.D.20. For each monitor well the Permittee shall prepare a geologic and monitor well completion log. The Permittee shall survey and record on the log the top of casing elevation for each monitor well as it is installed. This elevation shall become the reference for determining the groundwater surface elevation at each respective monitor well. IV.E. STATISTICAL PROCEDURES IV.E.1. Within sixty (60) days of completing the first round of annual sampling (of newly established monitor wells) as outlined in Condition IV.F.2, the Permittee shall select and submit to the Executive Secretary for review and approval, one of the statistical methods outlined in R315-8-6.8(h) to be used for evaluating groundwater monitoring data for each hazardous constituent. The method which has been approved by the Executive Secretary is in Attachment 4. This statistical method shall be conducted for each hazardous constituent in each monitor well. IV.E.2. The statistical method used to evaluate groundwater monitoring data shall be appropriate for the distribution of chemical parameters or hazardous constituents. IV.E.3. Hydrogeologic conditions at the RWMA dictate that a trend analysis such as the Mann Kendall is the most appropriate statistical comparison. Therefore, this individual monitor well trend analyses will be used in lieu of other statistical methods in accordance with R315-8-6.8(h)5. IV.E.4. Trends will be determined using a 95% confidence level (alpha = 0.05). IV.E.5. At the time the Permit was issued, the total sample population at the RWMA was less than 40. Thus, the equation specified in the Mann Kendall methodology for small sample populations is appropriate. However, when the total sample population exceeds 40, the equation for larger sample populations shall be used. IV.E.6. While trends will be developed for each specific monitor well, with no statistical comparison to the other RWMA monitor well data, the individual trends at each RWMA well shall be compared as part of the overall evaluation of RWMA water quality data. IV.E.7. The selected statistical method shall follow R315-8-6.8(a)(1)(i) where applicable. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 9 IV.F. MONITORING PROGRAM AND DATA EVALUATION IV.F.1. The Permittee shall collect, preserve, and analyze samples pursuant to Condition IV.D.18. IV.F.2. The Permittee shall determine groundwater quality at each monitor well at the compliance point annually during the post-closure care period of the RWMA. The Permittee shall express the groundwater quality at each monitor well in a form necessary for the determination of statistically significant increases in trends using the methods outlined in IV.E.3. IV.F.3. The Permittee shall determine the groundwater flow direction at the RWMA in the uppermost aquifer as required by R315-8-6.9(e). This information shall be included in the annual report specified in Condition IV.H.3. IV.F.4. During data analysis from each sampling event, the Permittee shall determine whether there is a statistically significant increase in the trend in each individual monitor well for the parameters identified in Condition IV.C. In determining whether such an increase has occurred, the Permittee must compare the groundwater quality at each monitor well specified in Condition IV.A.4 to the background value at each respective monitor well using the method specified in Condition IV.E.3. An upward trend indicated by a single detection of a Table IV-1 parameter would first be re-validated to confirm if there was sampling or laboratory errors that may have resulted in an invalid result. Depending on those findings, the following conditions shall apply: IV.F.4.a. If errors are confirmed, or suspected to have occurred in the lab or field, all related QA/QC information shall be reviewed to determine if an accurate value for the parameters in question can be obtained. If new value(s) can be obtained, they shall be incorporated into the same data set. If not, the parameters involved shall be reviewed as to whether the well should be re-sampled immediately, or if waiting until the next annual sampling event would not jeopardize water quality reporting issues for the event. IV.F.4.b. If it is re-sampled, the new sample(s) shall be analyzed for all or part of Table IV-1 as directed by the Executive Secretary, thus superceding the original sample results. The result of the re-sampling will direct what further action, if any, is to be taken pursuant to Condition IV.G. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 10 IV.F.5. The Permittee shall perform the evaluations described in Condition IV.F.4 within sixty (60) days after completion of the original sampling event. If re-sampling is required pursuant to Condition IV.F.4.b, the Permittee shall notify the Executive Secretary at least seven (7) days prior to the planned re-sampling event. Additionally, the reporting schedule in Table IV-2 will be delayed by sixty (60) days due to the additional sampling, analytical and data evaluation time involved in the re-sampling. IV.G. SPECIAL REQUIREMENTS IF SIGNIFICANT INCREASES OCCUR IN VALUES FOR PARAMETERS OR CONSTITUENTS IV.G.1. If the Permittee determines, pursuant to Condition IV.E. that there is a statistically significant increase above the background values for any of the indicator parameters specified in Condition IV.C., the Permittee shall: IV.G.1.a. Notify the Executive Secretary in writing within seven days as referenced in R315- 8-6.9(g)(1); IV.G.1.b. Within seven (7) days after the written notification sample the groundwater in all RWMA wells and determine the concentration of all plausible and potential constituents identified in R315-50-14 (40 CFR 264, Appendix IX), according to R315-8-6.9(g)(2) as directed by the Executive Secretary; and IV.G.1.c. Within 90 days, submit to the Executive Secretary an application for a permit modification to establish a compliance monitoring program as referenced in R315- 8-6.9(g)(4). The application must include the following information: IV.G.1.c.i. An identification of the concentration of all applicable Appendix IX constituents found in the groundwater at each monitor well at the compliance point according to R315-8-6.9(g)(4)(i). IV.G.1.c.ii. Any proposed changes to the groundwater monitoring system at the facility necessary to meet the requirements of compliance monitoring as described in R315- 8-6.10 according to R315-8-6.9(g)(4)(ii). IV.G.1.c.iii. Any proposed changes to the monitoring frequency, sampling and analysis procedures, or methods or statistical procedures used at the facility necessary to meet the requirements of R315-8-6.10 as referenced in R315-8-6.9(g)(4)(iii). Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 11 IV.G.1.c.iv. For each hazardous constituent found at the compliance point, a proposed concentration limit from existing background data, or a notice of intent to seek an alternate concentration limit for a hazardous constituent shall be used according to R315-8-6.9(g)(4)(iv). IV.G.2. Within 180 days of the submission of alternate concentration limits for the hazardous constituents, the Permittee shall submit all data to support the alternate concentration limit proposed and a corrective action feasibility plan that meets the requirements of Module V according to R315-8-6.9(g)(5). IV.G.3. If the Permittee determines, pursuant to Condition IV.F., using the Mann Kendall Test, or equivalent, that there is a statistically significant increase above RWMA monitoring well background values for the parameters specified in Condition IV.C., he may demonstrate that a source other than a regulated unit caused the increase or that the increase resulted from an error in sampling, analysis, or evaluation. In such cases, the Permittee shall: IV.G.3.a. Notify the Executive Secretary in writing within seven (7) days that he intends to make a demonstration according to R315-8-6.9(g)(6)(i). IV.G.3.b. Within 90 days, submit a report to the Executive Secretary which demonstrates that a source other than a regulated unit caused the increase, or that the increase resulted from an error in sampling, analysis, or evaluation according to R315-8-6.9(g)(6)(ii). IV.G.3.c. Within 90 days, submit to the Executive Secretary an application for a permit modification to make any appropriate changes to the detection monitoring program at the facility according to R315-8-6.9(g)(6)(iii). IV.G.3.d. Continue to monitor in accordance with the detection monitoring program at the facility according to R315-8-6.9(g)(6)(iv). IV.H. RECORD KEEPING AND REPORTING IV.H.1. The Permittee shall enter all monitoring, testing, and analytical data obtained in accordance with Condition IV.D the operating record as required in R315-8-5.3. The data shall include all computations, calculated means and results of all statistical tests required by Condition IV.E. IV.H.2. The established background values and the computations necessary to determine background values must be submitted to the Executive Secretary. A record of data Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module IV - Page 12 and trends in each well for the relative constituents in Table IV-1 must also be maintained. IV.H.3. The Permittee shall submit the analytical results required by Conditions IV.D.18 through 20 and the results of the statistical methods (as referenced in Attachment 4) required by Conditions IV.E and IV.F.4 in accordance with the following schedule: TABLE IV-2 SCHEDULE OF COMPLIANCE Annual Duration Annual Sampling Event Report Due Date to Executive Secretary January – December July or August October 31 January – December Re-Sample Under Condition IV.F.4. December 31 IV.I. ASSURANCE OF COMPLIANCE IV.I.1. The Permittee shall assure the Executive Secretary that groundwater monitoring and corrective action measures necessary to achieve compliance with the groundwater protection standard under R315-8-6.3 are taken during the term of the Permit. IV.J. REQUEST FOR PERMIT MODIFICATION IV.J.1. If the Permittee or the Executive Secretary determines that the detection monitoring program no longer satisfies the requirements or intent of the regulations, the Permittee shall, within ninety (90) days of the determination, submit an application for a permit modification to make any appropriate changes to the program which will satisfy the regulations required to R315-8-6.9(h). Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued: August 31, 2007 Module V - Page 1 MODULE V - GROUNDWATER CORRECTIVE ACTION V.A. CORRECTIVE ACTION PROGRAM SUBMITTAL V.A.1. The Permittee shall submit a Corrective Action Plan (CAP) for any groundwater contamination associated with the RWMA within one hundred eighty (180) days of the notification to the Executive Secretary as per Condition IV.G.1. Upon submittal of the CAP, the Executive Secretary shall review the plan and either approve or disapprove the CAP. If the CAP is not approved, the Permittee shall provide corrective solutions to the CAP deficiencies specified in writing by the Executive Secretary within ninety (90) days of the written notification. If the revised CAP is not approved, the Executive Secretary shall modify the CAP and this shall become the approved CAP. V.B. CORRECTIVE ACTION IMPLEMENTATION V.B.1. Upon approval of the CAP by the Executive Secretary, the Permittee shall implement the CAP, in a manner which will prevent hazardous waste constituents from exceeding their respective detection and/or concentration limits, as defined by Condition IV.C, at each Compliance Point, by removing the hazardous waste constituents, or by treating them in place. V.C. DURATION OF CORRECTIVE ACTION PROGRAM V.C.1. The Permittee shall continue corrective action during the compliance period to the extent necessary to ensure that the groundwater protection standard is no longer exceeded. If the Permittee is conducting corrective action at the end of the 30 year compliance period, as per Condition IV.B.2., he shall continue corrective action for as long as necessary to achieve compliance with the groundwater protection standard. The Permittee may terminate the CAP if he can demonstrate, based on data from the groundwater monitoring program under Module IV, that the groundwater protection standard has not been exceeded for a period of three consecutive years as referenced in R315-8-6.11(f). V.D. COST ESTIMATES FOR CORRECTIVE ACTION V.D.1. The corrective action plan required by Condition V.A shall provide a cost estimate of the actions required by Condition III.C. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 1 MODULE VI CORRECTIVE ACTION FOR SOLID WASTE MANAGEMENT UNITS SCHEDULE OF COMPLIANCE VI.A. SOLID WASTE MANAGEMENT UNITS VI.A.1. This permit supersedes the Stipulation and Consent Order issued by the Utah Solid and Hazardous Waste Committee to Chevron Products Company, also known as the Corrective Action Order (CAO). The effective date of the CAO is April 5, 1991. The CAO required a Corrective Action Process for production of six Closure Plans, a Resource Conservation and Recovery Act (RCRA) Facility Investigation (RFI), a Solid Waste Management Unit Assessment Plan, a Corrective Action Plan (CAP), Interim Corrective Measures and groundwater monitoring at the refinery. The status of the above CAO requirements is found in Attachment 5. The provisions of the CAO, including its duration, are hereby terminated on the date of issuance of this Post Closure Permit. VI.A.2. As part of the RFI, the Permittee prepared a Corrective Action Plan, which was submitted April 5, 1996 and approved by the Executive Secretary on April 7, 1997. VI.A.3. The Executive Secretary may append additional Solid Waste Management Units to those in Chevron's RFI at the request of the Permittee in accordance with R315-3-4.3 or upon receipt of any other information in accordance with R315-3-4.2. VI.B. STANDARD CONDITIONS VI.B.1. Failure to submit the information required by Module VI or falsification of any submitted information, is grounds for termination of this permit in accordance with R315-3-4.4. VI.B.2. The Permittee shall sign and certify all plans, reports, notifications, and other submissions to the Executive Secretary in accordance with Condition I.G. VI.B.3. The Permittee shall submit copies of each plan, report, notification, or other submissions required by the Executive Secretary. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 2 VI.B.4. Upon written approval from the Executive Secretary, all plans and schedules required by the conditions in Module VI shall be incorporated into Module VI of this permit in accordance with Condition VI.I. Any noncompliance with such approved plans and schedules shall be deemed noncompliance with this permit. VI.B.5. Upon written approval from the Executive Secretary in accordance with Condition VI.I, the Permittee shall receive extension(s) of the specified compliance schedule due date(s) for the submittal(s) required by Module VI. VI.B.6. If the Executive Secretary determines that further action beyond that provided by Module VI, or changes to that, which are stated herein, are warranted, the Executive Secretary shall modify Module VI in accordance with Condition VI.I. VI.B.7. All raw data, such as laboratory reports, drilling logs, bench-scale or pilot- scale data, and other supporting information gathered or generated during activities undertaken pursuant to conditions in Module VI shall be maintained at the Facility during the effective term of this permit. VI.C. RCRA FACILITY INVESTIGATION VI.C.1. The Permittee conducted an RFI as required by Paragraphs 34-41 of the signed April 5, 1991 CAO. Tasks I, II, III, and IV of the RFI have been submitted, approved, and conducted in accordance with the CAO. The RFI is used to support the CAP. VI.C.2. The Permittee prepared and submitted a final RFI Report on February 2, 1995, which was later reviewed and approved by the Executive Secretary on October 6, 1995. The Permittee performed the RFI as specified in Paragraph 34 of the approved April 5, 1991 CAO. The RFI was conducted pursuant to the RFI Work Plan prepared and submitted by the Permittee on October 2, 1991. The RFI Work Plan was approved by the Executive Secretary on January 29, 1993 prior to initiating work for the RFI. VI.C.3. The Permittee conducted the RFI for the 27 Solid Waste Management Units identified in 1991 CAO plus “Groundwater,” which was designated in the February 2, 1995 final RFI Report as the 28th SWMU. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 3 VI.D. INTERIM MEASURES AND VOLUNTARY CLEAN UP ACTIONS VI.D.1. If, during the course of any activity initiated in compliance with the permit conditions of Module VI of this permit, the Executive Secretary or the Permittee determines that a release or potential release of hazardous waste and/or hazardous waste constituents from a Solid Waste Management Unit poses a threat to human health and the environment, the Permittee may be required to perform specific interim measures. VI.D.2. The Executive Secretary shall notify the Permittee in writing of the requirement to perform the interim measures in accordance with Condition VI.D.3. VI.D.3. Within thirty (30) calendar days of receiving the written notification requiring Interim Measures as specified in VI.D.2, the Permittee shall provide an Interim Measures Plan to the Executive Secretary for review and approval. VI.D.4. The Permittee shall implement the Interim Measures Plan in accordance with Condition VI.D.3. VI.D.5. The Permittee may initiate voluntary interim measures in accordance with Conditions VI.D.6 and VI.D.7. VI.D.6. In determining whether an interim measure is required, the Executive Secretary (or the Permittee in the case of voluntary interim measures) shall consider the following: VI.D.6.a. Time required developing and implementing a final remedy, VI.D.6.b. Actual and potential exposure of human and environmental receptors, VI.D.6.c. Actual and potential contamination to the environment, VI.D.6.d. The potential for further degradation of the medium absent interim measures, VI.D.6.e. Presence of hazardous waste in containers that may pose a threat of release, Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 4 VI.D.6.f. Presence and concentration of hazardous waste including hazardous waste constituents in soils which have the potential to migrate to groundwater or surface water, VI.D.6.g. Weather conditions that may affect the current levels of contamination, VI.D.6.h. Risks of fire, explosion, or accident, and VI.D.6.i. Other situations that may pose a threat to human health and the environment. VI.D.7. The Interim Measures Plan shall identify specific actions to be taken to implement the interim measures and a schedule for implementing the required measures. The Interim Measures Plan shall be incorporated into this permit and shall include, but not be limited to, the following: VI.D.7.a. Objectives of the interim measure which indicate how it will mitigate a potential threat to human health (health and safety requirements) and the environment and/or is consistent with and integrated into any long-term solution at the Facility; VI.D.7.b. Data collection quality assurance and data management information; VI.D.7.c. Design plans and specifications, construction requirements, operation and maintenance requirements, project schedules, and final design documents; VI.D.7.d. Construction quality assurance objectives, inspection activities, sampling requirements, and documentation; and VI.D.7.e. Schedule for submittal of the following reports: progress reports, interim measures workplan, final design documents, draft interim measures report, and final interim measures report. VI.E. NOTIFICATION REQUIREMENTS FOR AND ASSESSMENT OF NEWLY-IDENTIFIED SOLID WASTE MANAGEMENT UNITS VI.E.1. The Permittee shall notify the Executive Secretary in writing, of any newly identified Solid Waste Management Unit(s) not identified in Condition VI.A, within thirty (30) calendar days of discovering the Solid Waste Management Unit(s). The notification shall include the location of the new Solid Waste Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 5 Management Unit(s) and information on the suspected or known wastes at the site(s). VI.E.2. Within one hundred fifty (150) calendar days following discovery of the Solid Waste Management Unit(s), the Permittee shall submit a Solid Waste Management Unit Assessment Plan to the Executive Secretary. VI.E.3. The Solid Waste Management Unit Assessment Plan shall include: VI.E.3.a. A description of past and present operations at the unit(s); and VI.E.3.b. Any groundwater, surface water, soil (surface or subsurface strata), or air sampling and analysis data needed to determine whether a release of hazardous waste or hazardous waste constituents from such units is likely to occur. The Solid Waste Management Assessment Plan shall demonstrate that the sampling and analysis plan, if applicable, is capable of yielding representative samples and must include parameters sufficient to identify migration of hazardous waste and/or hazardous waste constituents from the newly discovered Solid Waste Management Units to the environment. VI.E.4. The Solid Waste Management Unit Assessment Plan shall be evaluated by the Executive Secretary and; VI.E.4.a. The Permittee shall receive written approval from the Executive Secretary for the Solid Waste Management Unit Assessment Plan; or VI.E.4.b. The Permittee shall receive written notice from the Executive Secretary of the Solid Waste Management Unit Assessment Plan's deficiencies and the written notice will specify a due date for submittal of a revised assessment plan; or VI.E.4.c. The Permittee shall receive written notice from the Executive Secretary of the revisions incorporated by the Executive Secretary in the Solid Waste Management Unit Assessment Plan. The revised assessment plan shall become the approved Solid Waste Management Assessment Plan. VI.E.5. The Solid Waste Management Unit Assessment Plan (SWMU Assessment Plan), as approved by the Executive Secretary, shall be incorporated within Module VI in accordance with Condition I.D.1. The Permittee shall be notified in writing of the approval of the permit modification. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 6 VI.E.6. The Permittee shall implement the approved SWMU Assessment Plan within thirty (30) calendar days of receiving written notice of the permit modification approval specified in Condition VI.E.5. VI.E.7. The SWMU Assessment Plan shall contain a schedule for a Solid Waste Management Unit Assessment Report (SWMU Assessment Report) including the date it will be submitted to the Executive Secretary. VI.E.8. The SWMU Assessment Report shall describe all results obtained from the implementation of the approved SWMU Assessment Plan. For each newly listed Solid Waste Management Unit, the SWMU Assessment Report shall provide: VI.E.8.a. The Solid Waste Management Unit location identified on a map; VI.E.8.b. The type and function of the unit, including general dimensions and a structural description; VI.E.8.c. The period during which the unit was operated; and VI.E.8.d. A list of all wastes managed at the Solid Waste Management Unit and results of all sampling and analysis used to determine whether releases of hazardous wastes and/or hazardous waste constituents have occurred, are occurring, or are likely to occur from the unit. VI.E.9. Based on results of the SWMU Assessment Report, the Executive Secretary shall determine the need for further assessments at specific units in the SWMU Assessment Plan. If the Executive Secretary determines that such assessments are needed, the Executive Secretary shall require the Permittee to prepare a plan for such assessments in accordance with VI.E.3. VI.E.10. Based on the results of the assessments required by Condition VI.E.9, the Executive Secretary may require the Permittee to submit a remediation schedule and plan. VI.E.11. Within fifteen (15) days of discovery, the Permittee shall notify the Executive Secretary in writing, of any release(s) of hazardous waste or hazardous waste constituent(s) discovered during the course of groundwater monitoring, field Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 7 investigation, environmental auditing, or other activities undertaken. Such releases may be from already documented or newly identified units. The Executive Secretary shall require further assessments of the new releases in accordance with Condition VI.E.3. VI.F DETERMINATION OF NO FURTHER ACTIONS VI.F.1. The Permittee may petition the Executive Secretary to terminate the schedule of compliance for Corrective Action of Solid Waste Management Units, in Module VI, not previously specified in the CAP. VI.F.2. The CAP, submitted to the Executive Secretary on April 5, 1996, contained information from the RFI demonstrating that there have been no releases of hazardous waste or hazardous waste constituents that pose a threat to human health or the environment from SWMUs at the Facility. VI.F.3. A determination of no further action, in accordance with Condition VI.F.1, shall not preclude the Executive Secretary from requiring further investigations, studies, or remediation at a later date if new information or subsequent analysis indicates a release or potential of a release from a Solid Waste Management Unit at the Facility. In such a case, the Executive Secretary shall initiate either a modification to the Corrective Action Schedule of Compliance (Module VI) in accordance with Condition I.D.1. VI.G. CORRECTIVE ACTION PLAN VI.G.1 Based on the results of the RCRA Facility Investigation, submitted February 2, 1995 to the Executive Secretary, a CAP for all identified SWMUs in the RFI was submitted April 5, 1996 and approved by the Executive Secretary on April 7, 1997. The “Groundwater” SWMU, in the RFI, is now recognized as the “Groundwater Management Area” (GWMA) SWMU. The purpose of the CAP was to develop and evaluate corrective action alternatives and to outline one or more alternate corrective measures, which will satisfy the target cleanup objectives. The CAP included: VI.G.1.a. Target cleanup objectives, VI.G.1.b. Corrective action(s) which shall satisfy target cleanup objectives, Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 8 VI.G.1.c. Summary of all corrective measure alternatives examined for the CAP, and VI.G.1.d. Schedule for implementation of the corrective action(s) according the time frame and schedule of this Permit. VI.G.2. Since CAP approval on April 7, 1997, the Permittee has implemented corrective action(s) as outlined in the CAP schedule. VI.G.3. The Permittee shall furnish or retain all personnel, materials, and services necessary for the implementation of the CAP. VI.H. REPORTING REQUIREMENTS VI.H.1. Unless otherwise required by the Executive Secretary, the Permittee shall submit to the Executive Secretary written annual progress reports of all activities conducted pursuant to the Conditions of Module VI. The Permittee shall initially submit the annual progress reports no later than ninety (90) calendar days after the effective date of this permit. A corrective action activity report shall be included as an appendage of the Permittee’s annual groundwater report to the Executive Secretary. VI.H.2. The semi-annual progress reports shall contain: VI.H.2.a. A description of the work completed; VI.H.2.b. Summaries of all findings and all raw data; VI.H.2.c. Summaries of all problems encountered during the reporting period and actions taken or to be taken to rectify problems; and VI.H.2.d. Projected work for the next reporting period. VI.H.3. The Permittee shall maintain copies of other reports, drilling logs, and data at the Facility during the effective period of this permit. The Permittee shall provide copies of the said reports, logs, and data to the Executive Secretary upon request. VI.H.4. As specified under condition VI.B.6, the Executive Secretary may require the Permittee to conduct new or more extensive assessments, investigations, or Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 9 studies, as needed, based on information provided in these progress reports or other supporting information. VI.I. MODIFICATION OF THE CORRECTIVE ACTION SCHEDULE OF COMPLIANCE VI.I.1. A request for modifications of the final compliance dates pursuant to the permit conditions in Module VI shall be submitted to the Executive Secretary for approval, in accordance with Condition I.D.2. VI.I.2. Pursuant to Condition I.D.1, the compliance schedules shall be modified if the Executive Secretary determines that good cause exists. VI.I.3. The Permittee shall submit a request for modifications of the interim compliance dates that do not affect the final compliance dates to the Executive Secretary for approval. If the Executive Secretary approves the interim compliance date modifications, the following table shall incorporate the modified compliance dates in accordance with Condition I.D.1. VI.I.4. The schedule of compliance for corrective action, interim measures and all other submittals stipulated in the 1997 Permit are summarized on Table VI-1. Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 10 TABLE VI-1 CORRECTIVE ACTION COMPLIANCE SCHEDULE FACILITY SUBMITTAL ACTION AND DATE LWMA Final Construction Quality Assurance Plan Submitted June 29, 1995 approved by the Executive Secretary October 30, 1995. LWMA Final Corrective Action Plan, with design and plans for construction Accepted by the Executive Secretary, September 1995 Facility Corrective Action Plan Submitted to the Executive Secretary on April 5, 1996. Facility Corrective Action Plan Approved by the Executive Secretary April 7, 1997. Facility Corrective Action Plan - Construction and Implementation plans by designated unit As specified in the CAP and as approved by the Executive Secretary, April 7, 1997 Post Closure Permit Issued by Executive Secretary, September 2, 1997 Survey of the RWMA for attachment to deed Official boundary survey prepared and submitted to Davis County Recorder’s Office for deed attachment 1998 Fence and warning signs constructed around RWMA Construction completed in 1998 Construction of corrective measures at regulated units As approved in final CAP. Dates vary. Corrective measures construction progress reports Submitted throughout construction in accordance with Post Closure Permit on each respective unit, i.e. LWMA, NTF GWI, Landfarm Completion of the LWMA Remediation Project December 1998 LWMA Final Remedy Corrective Action Report Submitted to Executive Secretary November 1999 Wastewater Treatment System - Ponds 2 and 3 Final Remedy Corrective Action Report Submitted to Executive Secretary December 1999 LWMA Final Remedy Corrective Action Report Accepted by Executive Secretary, June 2000 Wastewater Treatment System Ponds 2 and 3 Final Remedy Report Executive Secretary Final Remedy Corrective Action, 2001 Landfarm – Landfarm Storage Area Closure Report Submitted to Executive Secretary February 15, 2001 Chevron Products Company Salt Lake Refinery Post-Closure Permit Reissued : August 31, 2007 Module VI - Page 11 TABLE VI-1 (Continued) CORRECTIVE ACTION COMPLIANCE SCHEDULE FACILITY SUBMITTAL ACTION AND DATE Landfarm – Landfarm Storage Area Closure Report Executive Secretary rejects Closure Report September 2001. Use of averages not allowed. Request for Class 1 Modification to Post Closure Permit Submitted to Executive Secretary March 29, 2002 Request for Class 2 Modification to Post Closure Permit Submitted to Executive Secretary July 11, 2002 Permission to proceed with Permit modifications Received from Executive Secretary July 12, 2002. Modified Post Closure Permit Submitted to Executive Secretary October 28, 2002. Landfarm – Landfarm Storage Area Closure Report Re-submittal to Executive Secretary March 25, 2003. Approved September 2003. 7/3/2007 CHEVRON PRODUCTS CO. Page 1 of 7 SALT LAKE REFINERY SALT LAKE CITY, UTAH LANDFILL WASTE MANAGEMENT AREA (LWMA) ANNUAL INSPECTION CHECKLIST INSPECTED BY EARTHFAX ENGINEERING, INC. MIDVALE, UTAH INSPECTOR: INSPECTION DATE: PROJECT No.: WEATHER SCHEDULE Prior to conducting the inspection, the previous inspection and corrective action forms will be reviewed to alert the inspector to items of special interest, and to identify trends in any corrective actions. The original of this inspection form shall be stored at EarthFax Engineering. A copy shall be maintained at Chevron Products Co., Salt Lake Refinery. Another copy shall be submitted to the Executive Secretary of the Utah Solid and Hazardous Waste Control Board. See the attached site plan of the LWMA for locations of specific inspection items. Attach additional sheets as necessary to describe damage or problems. Purpose and Scheduling of Inspection: Annual LWMA cell inspection and inspection of all four monitor wells (to be conducted as part of the annual groundwater sampling in July or August (II.D.6). Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 2 of 7 7/3/2007 Item Ye s No Comments ACCESS - Has the access road been removed, blocked, or damaged? SECURITY - Is the security fencing in-place, intact, and operational? - Have the fencing or gates been damaged or breached? SIGNAGE - Are necessary signs or placards in-place, legible, visible, and undamaged? DRAINAGE STRUCTURES - Are surface drainage structures intact, undamaged, and operational? - Has runoff overflowed the structures? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 3 of 7 7/3/2007 Item Ye s No Comments CAP MATERIALS - Are there signs of surface erosion? - Are there signs of surface settlement or differential subsidence (survey as necessary)? - Are there any surface cracks? - Is the gravel armor intact and uniform? - Are there any deep-rooted plants that may damage the low- permeability barriers? - Is there evidence of surface water ponding? - Are there signs of physical damage to the cap materials? - Have burrowing animals damaged the cap? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 4 of 7 7/3/2007 Item Ye s No Comments EMBANKMENTS - Are there signs of surface erosion? - Are there signs of settlement? - Are there any surface cracks? - Is the gravel armor intact and uniform? - Is there evidence of surface water ponding? - Is there evidence of slope failure? - Are there signs of bulging at the toe of slopes and embankments? - Are there signs of physical damage to the embankments (including burrowing animals)? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 5 of 7 7/3/2007 Item Ye s No Comments GROUNDWATER MONITORING WELLS (ii.D.6a-e) - Have any of the wells, locks, casings, aprons, or caps been damaged? - Are the cap lock systems in- place and operational? - Have the measuring points been damaged? - Is there evidence of sediment accumulation? - Are the annulus seals intact? - Are permanent dedicated pumps operational? - Are the wells accessible and visible? - Are the holding drums on-site and intact? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 6 of 7 7/3/2007 Item Ye s No Comments SETTLEMENT MONUMENTS - Have any of the settlement monuments been damaged? - Are the settlement monuments visible (painted)? - Other Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 7 of 7 7/3/2007 Comments: 7/3/2007 CHEVRON PRODUCTS CO. Page 1 of 7 SALT LAKE REFINERY SALT LAKE CITY, UTAH RESERVOIR WASTE MANAGEMENT AREA (RWMA) ANNUAL INSPECTION CHECKLIST INSPECTED BY EARTHFAX ENGINEERING, INC. MIDVALE, UTAH INSPECTOR: INSPECTION DATE: PROJECT No.: WEATHER SCHEDULE In accordance with Module II, Section D, of Post Closure Permit No. UTD092029768, any deterioration or malfunctioning of the RWMA that may result in a threat to human health or the environment shall be remedied within seventy-two (72) hours. If the remedy requires more time, the Permittee shall submit to the Executive Secretary of the Utah Division of Solid and Hazardous Waste, before the expiration of the Seventy-two (72) hour period, a proposed time schedule for correcting the problem. Prior to conducting the inspection, the previous inspection and corrective action forms will be reviewed to alert the inspector to items of special interest, and to identify trends in any corrective actions. The original of this inspection form shall be stored at EarthFax Engineering. A copy shall be maintained at Chevron Products Co., Salt Lake Refinery. Another copy shall be submitted to the Executive Secretary of the Utah Solid and Hazardous Waste Control Board. See the attached site plan of the RWMA for locations of specific inspection items. Attach additional sheets as necessary to describe damage or problems. Purpose and Scheduling of Inspection: Storm Event - Inspection required within 24 hours of precipitation in excess of .75 inches per 24 hours. Use official reports of the National Weather Service, located at the Salt Lake International Airport, as the weather station of record (II.D.5). Details of the storm event are as follows: Annual RWMA cell inspection and inspection of all monitor wells (to be conducted as part of the annual groundwater sampling in July or August (II.D.6). Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 2 of 7 7/3/2007 Item Yes No Comments ACCESS - Has the access road been removed, blocked, or damaged? SECURITY - Is the security fencing in-place, intact, and operational? - Have the fencing or gates been damaged or breached? SIGNAGE - Are necessary signs or placards in-place, legible, visible, and undamaged? DRAINAGE STRUCTURES - Are surface drainage structures intact, undamaged, and operational? - Has runoff overflowed the structures? Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 3 of 7 7/3/2007 Item Yes No Comments CAP MATERIALS - Are there signs of surface erosion? - Are there signs of surface settlement or differential subsidence (survey as necessary)? - Are there any surface cracks? - Is the vegetation cover intact and uniform? - Are there any deep-rooted plants that may damage the low- permeability barriers? - Is there evidence of surface water ponding? - Are there new signs of physical damage to the cap materials? - Have burrowing animals damaged the cap? Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 4 of 7 7/3/2007 Item Yes No Comments EMBANKMENTS - Are there signs of surface erosion? - Are there signs of settlement? - Are there any surface cracks? - Is the vegetation cover intact and uniform? - Is there evidence of surface water ponding? - Is there evidence of slope failure? - Are there signs of bulging at the toe of slopes and embankments? - Are there new signs of physical damage to the embankments (including burrowing animals)? Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 5 of 7 7/3/2007 Item Yes No Comments GROUNDWATER MONITORING WELLS (II.D.6a-e) - Have any of the wells, locks, casings, aprons, or caps been damaged? - Are the cap lock systems in- place and operational? - Have the measuring points been damaged? - Is there evidence of sediment accumulation? - Are the annulus seals intact? - Are permanent dedicated pumps operational? - Are the wells accessible and visible? - Are the holding drums on-site and intact? - Measured depth to the bottom of each well (required annually, IV.D.2G). - Other Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 6 of 7 7/3/2007 Item Yes No Comments SETTLEMENT MONUMENTS - Have any of the settlement monuments been damaged? - Are the settlement monuments visible (painted)? - Other Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 7 of 7 7/3/2007 Comments: Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 8 of 7 7/3/2007 CHEVRON PRODUCTS CO. Page 1 of 7 SALT LAKE REFINERY SALT LAKE CITY, UTAH LANDFILL WASTE MANAGEMENT AREA (LWMA) ANNUAL INSPECTION CHECKLIST INSPECTED BY EARTHFAX ENGINEERING, INC. MIDVALE, UTAH INSPECTOR: INSPECTION DATE: PROJECT No.: WEATHER SCHEDULE Prior to conducting the inspection, the previous inspection and corrective action forms will be reviewed to alert the inspector to items of special interest, and to identify trends in any corrective actions. The original of this inspection form shall be stored at EarthFax Engineering. A copy shall be maintained at Chevron Products Co., Salt Lake Refinery. Another copy shall be submitted to the Executive Secretary of the Utah Solid and Hazardous Waste Control Board. See the attached site plan of the LWMA for locations of specific inspection items. Attach additional sheets as necessary to describe damage or problems. Purpose and Scheduling of Inspection: Annual LWMA cell inspection and inspection of all four monitor wells (to be conducted as part of the annual groundwater sampling in July or August (II.D.6). Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 9 of 7 7/3/2007 Item Ye s No Comments ACCESS - Has the access road been removed, blocked, or damaged? SECURITY - Is the security fencing in-place, intact, and operational? - Have the fencing or gates been damaged or breached? SIGNAGE - Are necessary signs or placards in-place, legible, visible, and undamaged? DRAINAGE STRUCTURES - Are surface drainage structures intact, undamaged, and operational? - Has runoff overflowed the structures? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 10 of 7 7/3/2007 Item Ye s No Comments CAP MATERIALS - Are there signs of surface erosion? - Are there signs of surface settlement or differential subsidence (survey as necessary)? - Are there any surface cracks? - Is the gravel armor intact and uniform? - Are there any deep-rooted plants that may damage the low- permeability barriers? - Is there evidence of surface water ponding? - Are there signs of physical damage to the cap materials? - Have burrowing animals damaged the cap? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 11 of 7 7/3/2007 Item Ye s No Comments EMBANKMENTS - Are there signs of surface erosion? - Are there signs of settlement? - Are there any surface cracks? - Is the gravel armor intact and uniform? - Is there evidence of surface water ponding? - Is there evidence of slope failure? - Are there signs of bulging at the toe of slopes and embankments? - Are there signs of physical damage to the embankments (including burrowing animals)? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 12 of 7 7/3/2007 Item Ye s No Comments GROUNDWATER MONITORING WELLS (ii.D.6a-e) - Have any of the wells, locks, casings, aprons, or caps been damaged? - Are the cap lock systems in- place and operational? - Have the measuring points been damaged? - Is there evidence of sediment accumulation? - Are the annulus seals intact? - Are permanent dedicated pumps operational? - Are the wells accessible and visible? - Are the holding drums on-site and intact? Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 13 of 7 7/3/2007 Item Ye s No Comments SETTLEMENT MONUMENTS - Have any of the settlement monuments been damaged? - Are the settlement monuments visible (painted)? - Other Chevron Products Co., Salt Lake Refinery LWMA Inspection Checklist Page 14 of 7 7/3/2007 Comments: 7/3/2007 CHEVRON PRODUCTS CO. Page 1 of 7 SALT LAKE REFINERY SALT LAKE CITY, UTAH RESERVOIR WASTE MANAGEMENT AREA (RWMA) ANNUAL INSPECTION CHECKLIST INSPECTED BY EARTHFAX ENGINEERING, INC. MIDVALE, UTAH INSPECTOR: INSPECTION DATE: PROJECT No.: WEATHER SCHEDULE In accordance with Module II, Section D, of Post Closure Permit No. UTD092029768, any deterioration or malfunctioning of the RWMA that may result in a threat to human health or the environment shall be remedied within seventy-two (72) hours. If the remedy requires more time, the Permittee shall submit to the Executive Secretary of the Utah Division of Solid and Hazardous Waste, before the expiration of the Seventy-two (72) hour period, a proposed time schedule for correcting the problem. Prior to conducting the inspection, the previous inspection and corrective action forms will be reviewed to alert the inspector to items of special interest, and to identify trends in any corrective actions. The original of this inspection form shall be stored at EarthFax Engineering. A copy shall be maintained at Chevron Products Co., Salt Lake Refinery. Another copy shall be submitted to the Executive Secretary of the Utah Solid and Hazardous Waste Control Board. See the attached site plan of the RWMA for locations of specific inspection items. Attach additional sheets as necessary to describe damage or problems. Purpose and Scheduling of Inspection: Storm Event - Inspection required within 24 hours of precipitation in excess of .75 inches per 24 hours. Use official reports of the National Weather Service, located at the Salt Lake International Airport, as the weather station of record (II.D.5). Details of the storm event are as follows: Annual RWMA cell inspection and inspection of all monitor wells (to be conducted as part of the annual groundwater sampling in July or August (II.D.6). Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 2 of 7 7/3/2007 Item Yes No Comments ACCESS - Has the access road been removed, blocked, or damaged? SECURITY - Is the security fencing in-place, intact, and operational? - Have the fencing or gates been damaged or breached? SIGNAGE - Are necessary signs or placards in-place, legible, visible, and undamaged? DRAINAGE STRUCTURES - Are surface drainage structures intact, undamaged, and operational? - Has runoff overflowed the structures? Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 3 of 7 7/3/2007 Item Yes No Comments CAP MATERIALS - Are there signs of surface erosion? - Are there signs of surface settlement or differential subsidence (survey as necessary)? - Are there any surface cracks? - Is the vegetation cover intact and uniform? - Are there any deep-rooted plants that may damage the low- permeability barriers? - Is there evidence of surface water ponding? - Are there new signs of physical damage to the cap materials? - Have burrowing animals damaged the cap? Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 4 of 7 7/3/2007 Item Yes No Comments EMBANKMENTS - Are there signs of surface erosion? - Are there signs of settlement? - Are there any surface cracks? - Is the vegetation cover intact and uniform? - Is there evidence of surface water ponding? - Is there evidence of slope failure? - Are there signs of bulging at the toe of slopes and embankments? - Are there new signs of physical damage to the embankments (including burrowing animals)? Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 5 of 7 7/3/2007 Item Yes No Comments GROUNDWATER MONITORING WELLS (II.D.6a-e) - Have any of the wells, locks, casings, aprons, or caps been damaged? - Are the cap lock systems in- place and operational? - Have the measuring points been damaged? - Is there evidence of sediment accumulation? - Are the annulus seals intact? - Are permanent dedicated pumps operational? - Are the wells accessible and visible? - Are the holding drums on-site and intact? - Measured depth to the bottom of each well (required annually, IV.D.2G). - Other Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 6 of 7 7/3/2007 Item Yes No Comments SETTLEMENT MONUMENTS - Have any of the settlement monuments been damaged? - Are the settlement monuments visible (painted)? - Other Chevron Products Co., Salt Lake Refinery RWMA Inspection Checklist Page 7 of 7 7/3/2007 Comments: Chevron Products Company Post Closure Permit Salt Lake Refinery Attachment 3 October 31, 2002 Rule R655-4. Water Well Drillers. As in effect on July 1, 2002 R655-4-12. Abandonment of Wells. 12.1 Temporary Abandonment. 12.1.1 When any well is temporarily removed from service, the top of the well shall be sealed with a tamper resistant, water-tight cap or seal. If a well is in the process of being drilled and is temporarily abandoned, the well shall be sealed with a tamper resistant, water-tight cap or seal and a surface seal installed in accordance with Subsection R655-4-9(9.4). The well may be temporarily abandoned during construction for a maximum of 90 days. After the 90 day period, the temporarily abandoned well shall be permanently abandoned in accordance with the following requirements, and an official well abandonment report (abandonment log) must be submitted in compliance with Section R655-4-4. 12.2 Permanent Abandonment. 12.2.1 The rules of this section apply to the abandonment of the type of wells listed in Subsection R655-4-1(1.2) including private water wells, public supply wells, monitor wells, cathodic protection wells, and heating or cooling exchange wells. A licensed driller shall notify the state engineer prior to commencing abandonment work and submit a complete and accurate abandonment log following abandonment work in accordance with Section R655-4-4 of these rules. Prior to commencing abandonment work, the driller shall obtain a copy of the well log of the well proposed to be abandoned from the well owner or the state engineer, if available, in order to determine the proper abandonment procedure. Any well that is to be permanently abandoned shall be completely filled in a manner to prevent vertical movement of water within the borehole as well as preventing the annular space surrounding the well casing from becoming a conduit for possible contamination of the groundwater supply. A well driller who wishes to abandon a well in a manner that does not comply with the provisions set forth in this section must request approval from the state engineer. 12.3 License Required. 12.3.1 Well abandonment shall be accomplished under the direct supervision of a currently licensed water well driller who shall be responsible for verification of the procedures and materials used. 12.4 Acceptable Materials. Chevron Products Company Post Closure Permit Salt Lake Refinery Attachment 3 October 31, 2002 12.4.1 Neat cement grout, sand cement grout, unhydrated bentonite, or bentonite grout shall be used to abandon wells and boreholes. Other sealing materials or additives, such as fly ash, may be used in the preparation of grout upon approval of the state engineer. Drilling mud or drill cuttings shall not be used as any part of a sealing materials for well abandonment. The liquid phase of the abandonment fluid shall be water from a potable municipal system or disinfected in accordance with Subsection R655-4-9(9.6.5). 12.5 Placement of Materials. 12.5.1 Neat cement and sand cement grout shall be introduced at the bottom of the well or required sealing interval and placed progressively upward to the top of the well. The sealing material shall be placed by the use of a grout pipe, tremie line, dump bailer or equivalent in order to avoid freefall, bridging, or dilution of the sealing materials or separation of aggregates from sealants. Sealing material shall not be installed by freefall (gravity) unless the interval to be sealed is dry and no deeper than 30 feet below ground surface. If the well to be abandoned is a flowing artesian well, the well may be pressure grouted from the surface. The well should be capped immediately after placement of seal materials to allow the seal material to set up and not flow out of the well. 12.5.2 Bentonite-based abandonment products shall be mixed and placed according to manufacturer's recommended procedures and result in a seal free of voids or bridges. Granular or powered bentonite shall not be placed under water. When placing unhydrated bentonite, a sounding or tamping tool shall be run in the sealing interval during pouring to measure fill-up rate, verify a continuous seal placement, and to break up possible bridges or cake formation. 12.5.3 The uppermost ten (10) feet of the abandoned well casing or borehole shall consist of neat cement grout or sand cement grout. 12.5.4 Abandonment materials placed opposite any non-water bearing intervals or zones shall be at least as impervious as the formation or strata prior to penetration during the drilling process. 12.5.5 Prior to well or borehole abandonment, all pump equipment, piping, and other debris shall be removed to the extent possible. The well shall also be sounded immediately before it is plugged to make sure that no obstructions exist that will interfere with the filling and sealing. If the well contains lubricating oil that has leaked from a turbine shaft pump, it shall be removed from the well prior to abandonment and disposed of in accordance with applicable state and federal regulations. 12.5.6 Verification shall be made that the volume of sealing and fill material placed in a well during abandonment operations equals or exceeds the volume of the well or borehole to be filled and sealed. Chevron Products Company Post Closure Permit Salt Lake Refinery Attachment 3 October 31, 2002 12.6 Termination of Casing. 12.6.1 The casings of wells to be abandoned shall be severed a minimum of two feet below either the natural ground surface adjacent to the well or at the collar of the hole, whichever is the lower elevation. A minimum of two (2) feet of compacted native material shall be placed above the abandoned well upon completion. 12.7 Abandonment of Artesian Wells. 12.7.1 A neat cement grout, sand-cement grout, or concrete plug shall be placed in the confining stratum overlying the artesian zone so as to prevent subsurface leakage from the artesian zone. The remainder of the well shall be filled with sand-cement grout, neat cement grout, bentonite abandonment products, or bentonite grout. The uppermost ten (10) feet of the well shall be abandoned as required in Subsection R655-4-12(12.5.3). 12.8 Abandonment of Drilled and Jetted Wells. 12.8.1 A neat cement grout or sand cement grout plug shall be placed opposite all perforations, screens or openings in the well casing. The remainder of the well shall be filled with cement grout, neat cement, bentonite abandonment products, concrete, or bentonite slurry. The uppermost ten feet of the well shall be abandoned as required in Subsection R655-4-12(12.5.3). 12.9 Abandonment of Gravel Packed Wells. 12.9.1 All gravel packed wells shall be pressure grouted throughout the perforated or screened section of the well. The remainder of the well shall be filled with sand cement grout, neat cement grout, bentonite abandonment products, or bentonite grout. The uppermost ten feet of the well shall be abandoned as required in Subsection R655-4-12(12.5.3). 12.10 Removal of Casing. 12.10.1 It is recommended that the well casing be removed during well abandonment, and when doing so, the abandonment materials shall be placed from the bottom of the well or borehole progressively upward as the casing is removed. The well shall be sealed with sand cement grout, neat cement grout, bentonite abandonment products, or bentonite grout. In the case of gravel packed wells, the entire gravel section shall be pressure grouted. The uppermost ten feet of the well shall be abandoned as required in Subsection R655-4-12(12.5.3). 12.11 Replacement Wells. 12.11.1 Wells which are to be removed from operation and replaced by the drilling of a new well under an approved replacement application, shall be abandoned in a manner consistent with the provisions of Section R655-4-12 before the rig is removed from the site of the newly constructed Chevron Products Company Post Closure Permit Salt Lake Refinery Attachment 3 October 31, 2002 replacement well, unless written authorization to remove the rig without abandonment is provided by the state engineer. Also refer to the requirements provided in Subsection R655- 4- 4(4.4). 12.12 Abandonment of Cathodic Protection Wells. 12.12.1 The general requirements for permanent well abandonment in accordance with Section R655-4-12 shall be followed for the abandonment of cathodic protection wells. 12.12.2 A cathodic protection well shall be investigated before it is destroyed to determine its condition, details of its construction and whether conditions exist that will interfere with filling and sealing. 12.12.3 Casing, cables, anodes, granular backfill, conductive backfill, and sealing material shall be removed as needed, by re-drilling, if necessary, to the point needed to allow proper placement of abandonment material. Casing that cannot be removed shall be adequately perforated or punctured at specific intervals to allow pressure injection of sealing materials into granular backfill and all other voids that require sealing The HTML version of this rule is a convenience copy. This information is made available on the Internet as a public service. Please see this disclaimer about information available from www.rules.utah.gov. Michael O. Leavitt Governor Dianne R. Nielson, Ph.D. Executive Director Dennis R. Downs Director Department of Environmental Quality Division of Solid and Hazardous Waste 288 North 1460 West P.O. Box 144880 Salt Lake City, Utah 84114-4880 (801) 538-6170 (801) 538-6715 Fax (801) 536-4414 T.D.D. www.deq.utah.gov April 23, 2003 Curtis Anderson, Manager Chevron Products Company Salt Lake Refinery 2351 North 1100 West Salt Lake City, Utah 84116 RE: Statistical Procedure Approval for Post Closure Permit Dear Mr. Anderson: The Division of Solid and Hazardous Waste (Division) has completed its review of the Chevron Products Company, Salt Lake Refinery’s (Chevron) permit modification request to change the method of statistical procedures required by the Post Closure Permit for the Reservoir Waste Management Area (RWMA) submitted on March 29, 2002. Based on Chevron’s explanation on the nature of the hydrogeologic conditions and groundwater mounding under the Reservoir Waste Management Area, the request to use the Mann-Kendall Trend Analysis in place of the Parametric ANOVA method is hereby approved. The decision to use the Mann- Kendall Trend Analysis is supported by information from Chevron, and discussions between Division staff members and Chevron and its representatives. This modification request was submitted as a Class 1 requiring prior approval and as such may be implemented as per the conditions applicable to a Class 1 permit modification outlined in R315-3-4.3 (as incorporated by reference 40 CFR 270.42) Should you have questions, please contact Matt Sullivan at 538-6858. Sincerely, ORGINAL DOCUMENT SIGNED BY DENNIS R DOWNS ON APRIL 23, 2003 Dennis R. Downs, Executive Secretary Utah Solid and Hazardous Waste Control Board DRD/MBS/cb c: Delane McGarvey ,E.H.S., Director Davis County Health Department Eric Johnson, U. S. EPA Region VIII Mann-Kendall Test The Mann-Kendall test is a non-parametric test for determining trends. It indicates whether a particular constituent has a statistically significant increasing or decreasing trend in an individual monitor well. The test will also indicate the absence of a statistically significant trend. Mann- Kendall is particularly useful since it has very few limitations. For example, sample data need not be in a particular distribution and missing values are allowed. Mann-Kendall can also use data reported as either a trace value or one less than the method detection limit by assigning a common value that is less than the lowest measured value. This is allowed because Mann- Kendall uses the relative magnitude of the values to determine a trend and not the measured values. Of the trend analysis tests available, Mann-Kendall is the most robust and simple. This reduces the chances for error during the statistical analysis. A more detailed discussion of the Mann-Kendall test can be found in Statistical Methods for Environmental Pollution Monitoring by Richard O. Gilbert (1987). Chevron Products Company Salt Lake Refinery Post-Closure Permit Issued: September 2, 1997 Modified: September 8, 2003 Attachment 5 - Page 1 ATTACHMENT 5 STATUS OF CLOSURE UNITS AND SOLID WASTE MANAGEMENT UNITS Solid Waste Management Unit Recommended Action Status of Corrective Action Reservoir Close pursuant to 1991 Closure Plan Closed in 1995 as RWMA; closure approved by Executive Secretary in 1996; Regulated under Post Closure Permit Landfill Area (Solid Waste Landfill) Include in LWMA Included in LWMA; Regulated under Post Closure Permit Landfill Area (Hazardous Waste Landfill) Closure by removal Closed in 1995; closure approved by Executive Secretary in 1996 Landfill Area (Old Barrel Storage Area) Include in LWMA Included in LWMA; Regulated under Post Closure Permit Landfill Area (Standing Water Surface) Include in LWMA Included in LWMA; Regulated under Post Closure Permit Oily Dump Include in LWMA Included in LWMA; Regulated under Post Closure Permit TEL Weathering Area Closure by removal Closed in 1995; closure approved by Executive Secretary in 1996 Landfarm Storage Area Close in accordance with 1991 Closure Plan Excavated and placed in Landfarm in 1996 Landfarm Close in accordance with 1991 Closure Plan Closure report submitted 2001; rejected 2001; re-submitted and approved 2003; Regulated under Post Closure Permit Alky Channel Include in LWMA Included in LWMA; Regulated under Post Closure Permit Spent Caustic Evaporation Site No further action Awaiting ruling on formal status Alky Site Include in LWMA Included in LWMA Northeast Landfill No further action; improve drainage as required Drainage plans complete (RFI Appendix K) Leaded Tank Sludge Disposal Sites No further action Waste disposed off-site in 1983 Conveyance Ditches No further action Wastes disposed off-site in 1983 Standing Water Site No further action; improve drainage as required Drainage plans complete (RFI Appendix K) API Separator Sludge Pit Close pursuant to 1991 Closure Plan Closed in 1995 as part of RWMA; closure approved by Executive Secretary in 1996; Regulated under Post Closure Permit Storm Surge Pond Close pursuant to 1991 Closure Plan Closed in 1995 as part of RWMA; closure approved by Executive Secretary in 1996; Regulated under Post Closure Permit Chevron Products Company Salt Lake Refinery Post-Closure Permit Issued: September 2, 1997 Modified: September 8, 2003 Attachment 5 - Page 2 ATTACHMENT 5 (Continued) Solid Waste Management Unit Recommended Action Status of Corrective Action Baffle Board Pond Close pursuant to 1991 Closure Plan Closed in 1995 as part of RWMA; closure approved by Executive Secretary in 1996; Regulated under Post Closure Permit Wastewater Treatment System (API Separator) Off-site disposal WWTS upgrade completed; sludges and vault hauled off-site; Wastewater Treatment System (IAF) No further action as long as unit is operational WWTS upgrade completed; permitted recycle of sludge to Coker Wastewater Treatment System (Storm Water Segregation Sump) Clean and backfill WWTS upgrade completed; permitted recycle of sludge to Coker; clean and backfill in 1997 Wastewater Treatment System (No. 1 Pond) Include in LWMA WWTS upgrade completed; included in LWMA Wastewater Treatment System (Bio-Discs) Still active part of new WWTS WWTS upgrade completed Wastewater Treatment System (No. 2 Pond) On-site intrinsic bioremediation High TPH sludge included in LWMA; on-site intrinsic bioremediation; no further action approved by Executive Secretary in 2001 Wastewater Treatment System (No. 3 Pond) On-site intrinsic bioremediation On-site intrinsic bioremediation; no further action approved by Executive Secretary in 2001 Wastewater Treatment System (No. 4 Pond) Include in LWMA WWTS upgrade completed; to be included in LWMA; Regulated under Post Closure Permit Sand Filter Backwash Pond Include in LWMA WWTS upgrade completed; to be included in LWMA; Regulated under Post Closure Permit Wastewater Treatment System (No. 5 Pond) Include in LWMA WWTS upgrade completed; to be included in LWMA; Regulated under Post Closure Permit HF Acid Neutralization Tank No further action as long as unit is operational Summarized in RFI Report Spent Caustic Tanks No further action as long as unit is operational Summarized in RFI Report Lime Settling Basin No further action as long as unit is operational Cleaned and backfilled October 1994; opened again in 1995 Coke Fines Dewatering Impoundment No further action Waste removed off-site in 1987 Hazardous Waste Interim Storage Pad No further action as long as unit is operational Summarized in RFI Report Chevron Products Company Salt Lake Refinery Post-Closure Permit Issued: September 2, 1997 Modified: September 8, 2003 Attachment 5 - Page 3 ATTACHMENT 5 (Continued) Solid Waste Management Unit Recommended Action Status of Corrective Action Shale Oil Semi-Works Retention Pond No further action Wastes removed to spent shale pile and unit closed under corrective action in 1985 Shale Oil Semi-Works Spent Shale Pile No further action Closed under corrective action in 1985 with slurry wall (RFI Appendix K) No. 2 Outfall Channel Include in LWMA Included in LWMA; Regulated under Post Closure Permit; Regulated under Post Closure Permit Experimental Farm No further action Summarized in RFI Report Bonneville Canal Close to protect groundwater; petition for final corrective action in 1995 Closed in 1993 as interim corrective measures with wastes removed off-site (RFI Appendix C). Final Corrective Measures approved in 1997 Permit Baffle Board Pond Conveyance Ditch Include in LWMA Included in LWMA; Regulated under Post Closure Permit Abandoned Lime Settling Basin Include in LWMA Included in LWMA; Regulated under Post Closure Permit Lime Settling Basin Dewatering Impoundment No further action as long as unit is operational due to non- hazardous rating Summarized in RFI Report Fire Training Area Currently no action; remains operational Delay action while operational Railcar Loading Area No further action Current design adequate for operational spills and leaks Bio-Disc Sump No further action; monitor downgradient monitor well S-1; petition for final corrective action in 1995 Affected area excavated and removed; HFM sump constructed at this unit (RFI Appendix C). No further action approved in Permit North Tank Farm No further action as long as unit is operational; petition for final corrective action in 1995 Unit under interim corrective measures with operating groundwater intercept system Groundwater Declare facility-wide groundwater as a separate SWMU Accepted as separate SWMU; designated as Groundwater Waste Management Area (GWMA); Regulated under Post Closure Permit