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HomeMy WebLinkAbout4501_ROSCANS_1999AMESB. HUNTJR: `COVE}iNOR - I <s t $,`'`HILL S e HOLMAN NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT December 30, 1999 Mr. Gary Tweed, P. E. County Engineer Henderson County 802 Stoney Mountain Road Hendersonville, NC 28791 Re: Status of the Alterative Cap Equivalency Demonstration, Henderson County MSWLF, Permit Number 45-01 and the Permit Application for a CDLF. Dear Mr Tweed: This letter is in response to your letter dated December 6, 1999, regarding the status of the alternative cap equivalency demonstration and the permit application for a construction/demolition landfill(CDLF). This letter serves as written approval by the Solid Waste Section(Section) of the alternative cap equivalency demonstration for the Henderson County municipal solid waste landfill(MSWLF), Permit Number 45-01. The alternative cap system installed on the referenced landfill meets the closure criteria for MSWLFs in accordance with Rule .1627(c)(2). The formal closure letter for the referenced facility is being prepared by Tim Jewett, Western Area Engineer. As we discussed in the meeting on October 4, 1999, the Section has serious concerns regarding the suitability of the proposed site for a construction/demolition landfill. A preliminary review by Ellen Lorscheider, Permitting Hydrogeologist, suggests that the required four -foot separation of solid waste from seasonal high water table and bedrock does not exist under current conditions. The permitting process for "sanitary landfills" allows the Section to determine site suitability based on the site's natural ability to dilute and attenuate leachate if the proposed landfill design does not include engineered devices. The ability of the proposed site to naturally attenuate and dilute leachate is questionable based on the current level of site characterization. I suggest that your consultant contact Ellen Lorscheider @ (919)733-0692, extension 345 to discuss these issues in greater detail. 1646 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1646 401 OBERLIN ROAD, SUITE 150, RALEIGH, NC 27605 PHONE 919-733-4996 FAX 919-715-3605 AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10q POST —CONSUMER PAPER a, Mr. Tweed December 30, 1999 Page 2 If I can be of further assistance, please contact me @ (919) 733-0692, extension 255 cerely, c ames C. Coffey, Pir ermitting Branch Solid Waste Section cc: Jim Patterson Ellen Lorscheider Tim Jewett CDMCamp Dresser & McKee consulting 5400 Glenwood Avenue, Suite 300 engineering Raleigh, North Carolina 27612 construction Tel: 919 787-5620 Fax: 919 781-5730 operations October 25, 1999 Mr. James C. Coffey Supervisor NC DENR - Solid Waste Section 401 Oberlin Road, Ste. 150 Raleigh, North Carolina 27605-1350 Subject: Henderson County, North Carolina Revised C&D Grading Plan Henderson County MSW Landfill Dear Mr. Coffey: A� OCT 1999 b,'i Si ii( On October 4, 1999, a meeting was held at the Solid Waste Section office between yourself, members of your staff, and Camp Dresser & McKee (CDM). The purpose of this meeting was to discuss siting issues regarding the proposed Henderson County C&D Landfill. During the course of this meeting, you suggested evaluating an expansion of the permitted C&D disposal area located over the closed MSW unit. This would provide a means of extending Henderson County's C&D disposal capacity while your section continues the Site Application review for the proposed new facility. Based on the above referenced conversation, CDM has revised the grading plan (Sheet C-2) of the "Application for Construction and Demolition Debris Disposal Facility on Top of Closed Henderson County MSW Landfill". This revision represents an increase in the size of the original 1.9± acre footprint to a footprint size of 4.5± acres. This increase in footprint size equates to an additional 7000± tons of capacity which would extend the life of the facility by about one year (based on a 3:1 horizontal to vertical slope). The intent of this letter and enclosed five copies of the revised Sheet C-2 is to obtain a revision to the existing C&D disposal permit. This permit revision is essential to keeping C&D disposal as a revenue source. These revenues are used to help maintain the County's waste management program's job base. Please confirm in writing that the County can expand their C&D operation as soon as possible. The currently permitted 1.9± acre footprint is almost at capacity. CDMCamp Dresser & MCI Mr. James C. Coffey October 25, 1999 Page 2 Thank you for your prompt attention to this matter. If you have any questions or need additional information, please do not hesitate to contact me. Very truly yours, CAMP DRESSER & McKEE William K. Taylor, P.E. Attachment cc: Gary Tweed, P.E., Henderson County Engineer a ry'^1 FMA NCDENR JAMEB B. HUNTJR. -GOVERNOR - WAYNE MCDEVITT�!�Y: SECRETARY NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT January 21, 1999 Mr. Bill Brinker NC Municipal Gas Partners, LP 7301 Carmel Executive Park Suite 208 Charlotte, NC 28226 RE: Henderson County Landfill Gas Project- Landfill Permit Number 4501 WILLIAML. MEYER DIRECTOR Dear Mr. Brinker, The Division of Waste Management, Solid Waste Section, is in receipt of your letter of 13 January 1999. This letter requested that NCMGP be allowed to hookup five existing wells to the current landfill gas system with above ground piping, on a temporary basis. The temporary hookup will be used while issues brought about by the Section's previous letter to the county are being resolved. The Section approves the hookup of the five wells on a temporary basis. A response to the Sections review letter should be prepared as quickly as possible. No further activities which disturb the closure cap system are allowed. Activities which do not disturb the integrity of the landfill cap are not restricted. If there are any further questions, please contact the Western Area Engineer, Tim Jewett. He may be reached at 336-771-4600. C Pa'mes C. Coffey Permitting Supervisor Solid Waste Section cc: Gary Tweed, PE Henderson County Ed Mussler, PE DWM Tim Jewett, DWM dingUagerson, DWM 401 OBERLIN ROAD, SUITE ISO, RALEIGH, NC 2760S PHONE 919-733-4996 FAX 919-71 S-3605 AN EQUAL OPPORTUNITY /AFFIRMATIVE ACTION EMPLOYER - SO% RECYCLED/10% POST -CONSUMER PAPER N.C. Des.; _)r EHNR DEC 2 8 SM Winston-Salem Regional 011flGe NCDENR Mr. Gary Tweed, P.E. Henderson County Engineer JAMES B. HLINTJR. 802 Stoney Mountain Road .GOVERNOR Hendersonville, North Carolina 28791 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT December 22, 1998 Re: Expansion of the Henderson County MSWLF Methane Gas Collection System. Henderson County Permit No. 45-01 -WAYNEMCDEVITT SECRETARY - Mr. Tweed: The Solid Waste Section (Section) has received your response letter dated 5 WILLIAM L. MEYER November 1998 regarding Section comments on the above referenced project. After DIRECTOR - reviewing the letter and comparing the information to Division files and previous documents submitted by Mr. Bill Brinker of NC Municipal Gas, Inc., the Section has the following comments: 1) Identify new wells and pipe layout. Well identification numbers and connections are unclear from the drawings provided. The drawing provided by NC Municipal Landfill Gas and drawing 1 of 3 made by Lapsley & Associates have conflicting contour and facility information. Correct and update the information on all appropriate documents. 2) The piping plan is unclear. Show existing and expected gas piping diameters; condensate piping locations and diameters; condensate sump storage locations; and connections to local sewer lines for condensate removal or storage. 3) Address condensate handling in the Operations Plan for the gas system. 4) No typical piping details are shown on the drawings (i.e., pipe fittings, tees, sumps, condensate connections, etc.). 5) On the appropriate site plan, show the area that was closed using the Regulatory minimum cap and the area bounded by the alternative cap demonstration. 6) Provide a CQA plan for the repair of disturbed areas within the Regulatory minimum cap delineation. The CQA plan should include the spacing, frequency of tests, and required material characteristics such as permeability, densities, moisture contents, and percent compaction to show that back filled areas are equivalent to the in -place cap. 401 OBERLIN ROAD, SUITE ISO, RALEIGH, NC 27605 PHONE 919-733-4996 FAX 91 9-715-3605 AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/1 O% POST -CONSUMER PAPER Mr. Gary Tweed Page 2 7) Provide a CQA plan for the back fill of disturbed areas within the boundary of the alternative cap demonstration. The CQA plan should include tests and frequencies necessary to demonstrate equivalency with the alternative cap. 8) The trench detail provided by Sterns & Conrad, Inc. indicates piping installed 4 inches below the ground surface. Demonstrate that pipe strength will withstand expected equipment loads. Note: The information provided to date in the Permit Application is for below ground pipe installation. The Section will consider allowing collection pipe installation above ground. If above ground installation is desired, please revise all applicable plans and information accordingly including details, gas facility operations plan, and the landfill operations and maintenance plans. All submittals shall be sealed by a North Carolina registered Professional Engineer. The response letter dated 5 November 1998 also states that the landfill gas system will be owned and operated by NC Municipal Landfill Gas, LLC and that the county would prefer that permitting be between the State and company. North Carolina Solid Waste Regulations and North Carolina General Statutes require that all solid waste permits are issued to the landfill property owners/operators. Also, since post closure care and maintenance factors into the operation of the landfill gas facility, the permit for this energy system will, if issued, be issued to Henderson County. An additional comment in the letter indicates that the operation of the gas extraction system is not required for the containment of landfill gas along the northern property boundary. Until updated facility plans incorporating additional property are submitted and new methane monitoring points are established along the revised boundary, the Section still considers part of the system for methane mitigation purposes. If you have any questions regarding this letter, please call me at (336) 771-4608, ext. 204, or Bill Sessoms at (919) 733-0692, ext. 266. Sincere' Timothy A. ew Western Area Engineer Solid Waste Section cc: Jim Coffey, SWS Julian Foscue, SWS Jim Patterson, SWS Bill Brinker, NC Municipal Landfill Gas, LLC Ted Ekkers, Sterns & Conrad, Inc. Raleigh Central Files: Henderson County Permit No. 45-01 NC DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES Division of Solid Waste Management Solid Waste Section SOLID WASTE MANAGE?ENT FACILITY EVALUATION REPORT Type of Facility. '. Permit Canty Name of Facility. I /),),f4 �,/-, � �, i Tt f it Location Date of Last Evaluation 1 �1 I. Permit Conditions Followed Yes No N/A A. Specific Condition(s) Violated 1 II. Operational Requirements Followed Yes No 15A N-C. Admin. Code 130 Section A. Specific Violation(s) by number and letter. III. Other Violations of Rule or Law IV. Evaluator's Comments V. Continuation Page Required? Yes No Receiving Signature Evaluation Date Solid Waste Section DEHNR 3793 (Part I White: Facility Part II Canary: Central office Part III Pink: Regional Office) Solid Waste Section (Review 7/94) NC DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES Division of Solid waste Management Solid waste Section �f Y �F ��lirt �"J"Y1 SOLID WASTE MANAGEMENT FACILITY EVALUATION REPORT j Type of Fac i l i ty lry f L/rY Pf Permit # Canty 1 Name of Faci lity. / ,G v Location f c� Date of Last Evaluation I i 1. Permit Conditions Followed Yes No N/A A_ Specific Condition(s) Violated IY. Operational Requirements Followed Yes i( No 3 uM;b Iy�5 C fe 15A N-C. Admin. Code 138 Section o 162P• % 1 / }� �e / y� A. Specific Violations) by number and Letter. I I i j III. Other Violations of Rule or Law I I IV. Evaluator's Comments n Z-7,1111J k yl. a % n - _ I I V. Contirxuation Page Required? Yes No Receiving Signature i Evaluation Date �,���Solid Waste Section DEHNR 3793 (Part I White: Facility Part II Canary: Central Office Part T Y Pink: Regional Office) ( Solid Waste Section (Review 7/94) NC DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES Division of Solid waste Management Solid waste Section SOLID WASTE MANAGEMENT FACILITY EVALUATION REPORT Type of Fac i l i ty, / L Perini t * ' � Canty tt , Name of Faci Iity l_ �,� E� �l ott tI ! Location Date of Last Evaluation I_ Permit Conditions Followed Yes No N/A A. Specific Condition(s) Vi II. Operational Requirements Followed Yes No 15A N-C. Ad.in. Code 13H Section �% o s A. Specific Violation(s) by number and letter. III. Other Violations of Rule or Law IV. Evaluator's V. Continuation Page Required? Yes No Receiving Signature Evaluation Date - Y Solid waste Section DEHNR 3793 (Part I bite: Facility Part II Canary: Central Office Part III Pink: Regional Office) Solid waste Section (Review 7/94) NC DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES Division of Solid haste Management Solid Waste Section SOLID WASTE MAMAGEIENT FACILITY EVALUATION REPORT Type of Faci Iity r i �,,.t. Permit # Canty PT Name of Foci lity. 1 ' �)�f�i Location Date of Last Evaluation I_ Permit Conditions Followed _4--Yes No N/A A. Specific Condition(s) Violated r II. Operational Requirements Followed jj Yes No 15A N-C. Admin. Code 138 Section m t l �a 4., A_ Specific Violation(s) by number and letter. �'I fr, /q l �'''ft �ti^ .� i . t_ ` i ("� 4 ' [ •� Pi t 1 �(i J f �.1.1 ! I l_ .4(.>i- III. other Violations of Rule or Law IV. Evaluator's V. Continuation Page Required? Yes �i No Receiving Signature ~ Evaluation Date Solid Waste Section DEHNR 3793 (Part I Fite: Facility Part II Canary: Central Office Part III Pink. Regional Office) Solid Waste Section (Review 7/94) NC DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES Division of Solid waste Management Solid waste Section SOLID WASTE MANAGEMENT FACILITY EVALUATION REPORT �.• ri Type of Faci lity. C. A'9 2t � Permit # � (� ! co�r,ty (';J�, tS�t f/S(:k� Name of Faci lity f S�Ihtk to 7 Location Date of Last Evaluation 7 i 1S -Jc) I. Permit Conditions Followed 4.Yes No N/A A. Specific Condition(s) Violated II. Operational Requirements Followed _Yes No 15A N-C. Admin. Code 138 Section o 5 o'-s A. Specific Violation(s) by number and letter. III. other Violations of Rule or Law IV. Evaluator's Comment s��}/ (,tM � t a —J � ` .�� 1�� Y vt,, V. Continuation Page Required? Yes No Receiving Signature Evaluation Date 7 — `7Gi Solid Waste Section DEHNR 3793 (Part I White: Facility Part II Canary: Central Office Part III Pink: Regional Office) Solid Waste Section (Review 7/94) NORTH L _ AOLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT October 27, 1999 NCDENR Mr. Gary Tweed, P. E. Henderson County .LAMES B. HUNTJR. GOVERNOR 802 Stoney Mountain Road Hendersonville, North Carolina 28791 Subject: Henderson County MSWLF Facility Transition Plan Modification WAYNE MCDEVITi for a C&D Unit atop the closed landfill: Permit No. 45-01 SECRETARY - Dear Mr. Tweed: The Solid Waste Section approves the ammendment to the referenced MSWLF "'iLLIAML.MEYER Facility permit to allow an expansion to the CONSTRUCTION & DEMOLITION DIRECTOR �- LANDFILL UNIT, (in accordance the approved plans and the revised footprint r4, on drawing SHEET C-2) at the Henderson County landfill. The operation of the C&D Landfill Area is effective 17_September 1998. The facility permit will be valid for five years and will expire on 17 September 2003 (see Condition Number 2, Page 1). Please note operational conditions outlined on pages one through seven for the facility. The Waste Management Specialist for this facility is Mr. Jim Patterson and you can reach him in our Asheville Regional Office at (828) 251-6208. If you have any questions about this approval letter, please contact me at (336) 771-4608 ext. 204 or James C. Coffey at (919) 733-0692 Ext. 255. Sincerely, Timothy a. ew t Western Ar Engineer Solid Waste Section cc: Jim Coffey =`~ Julian Foscue Jim Patterson Bill Taylor, Camp Dresser & McKee Raleigh Central Office: Henderson County MSW Facility, Permit #45-01 401 OBERLIN ROAD, SUITE 150, RALEIGH, NC 27605 PHONE 919-733-4996 FAX 919-715-3605 AN EQUAL OPPORTUNITY /AFFIRMATIVE ACTION EMPLOYER - 50 Yo RECYCLED/10% POST -CONSUMER PAPER 1 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT NCDENR - PERMIT NO. 45-01 MODIFICATION: 17 September 1998 DAMES B. HUNTJR 3) AMENDED: 27 October 1999 3 GOVERNOR WAYNE MCI SECRETARS WILLIAM L. DIRECTOR STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT P.O. BOX 27687 RALEIGH, NC 27611 SOLID WASTE PERMIT HENDERSON COUNTY is hereby issued a permit to operate a 4.5 Acre Construction and Demolition Landfill Unit located on Stoney Mountain Road (SR 1758), at the Henderson County Landfill, in Hendersonville, North Carolina in accordance with Article 9, Chapter 130A, of the General Statutes of North Carolina and all rules promulgated thereunder and subject to the conditions set forth in this permit. 4rmesC. Coffey, p rvisor itting Branch Solid Waste Section 401 OBERLIN ROAD, SUITE 150, RALEIGH, NC 27605 PHONE 919-733-4996 FAX 919-715-3605 AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10% POST -CONSUMER PAPER PERMIT NO. 45-01 MODIFICATION DATED: 09/17/98 AMMENDED: 27 October 1999 SOLID WASTE PERMIT Permit to Operate Henderson County Landfill Construction and Demolition Debris Landfill Unit CONDITIONS OF PERMIT: GENERAL 1. When this property is sold, leased, conveyed or transferred, the deed or other instrument of transfer shall contain in the description section in no smaller type than that used in the body of the deed or instrument, a statement that the property has been used as a sanitary landfill. 2. This permit will be subject to review every five years and will expire on 17 September 2003, as per 15A NCAC 13B .0201, according to the issuance date of this permit. Modifications to the facility may be required in accordance with rules in effect at the time of review. 3. The approved plan is described by Attachment 1, "List of Documents for Approved Plan". Where discrepancies may exist, the most recent submittal and the Conditions of Permit shall govern. Some components of the approved plan are reiterated in the Conditions of Permit. 4. This permit is not transferable. 5. The Financial Assurance Instrument(FAI) for this facility shall be amended when Closure Certification has been complete and the Closure/Post-Closure Care portion of the instrument is amended. The FAI shall be reviewed and updated annually for this facility once closure of the MSW unit is complete. 6. If during the operational life of the C&D unit it becomes apparent that the operations at the facility are impacting ground water adversely; the Solid Waste Section will require landfilling activities to cease and closure of the operating unit. 1 d 7. This permit is for development of the Henderson County Landfill Construction and Demolition Unit, 4.5 Acre Area on top of the old Henderson County MSW Landfill in accordance with the approved plan (Construction Drawings; the Facility Plan; the partial closure CQA Report from Camp Dresser & McKee dated 19 June 1998; the Application for a C&D Disposal Facility dated 24 June 1998; and the revision dated 25 October 1999) . 8. This solid waste management facility is permitted to receive the following waste types: a. Land -clearing debris as defined in G.S. 130A-290, specifically, solid waste which is generated solely from land -clearing activities, such as stumps, trees, etc.; b. Inert debris defined as solid waste which consists solely of material that is virtually inert, such as brick, concrete, rock and clean soil, and C. Asphalt in accordance with G.S. 130-294(m). d. Construction and demolition debris defined as solid waste resulting solely from construction, remodeling, repair or demolition operations on pavement, buildings, or other structures. e. C&D like waste that are similar to wastes typically found in the land clearing -inert debris and C&D waste streams consisting of wastes at this time: roofing shingle waste from the manufacturer, waste building materials from mobile home/modular home manufacturer and wooden pallets. Other wastes MAY be approved by the Division upon receipt of a written request with the specific waste type, how its generated, how much is generated, along with any additional information the Division may request to render a final decision on the disposal options for the waste. Yard trash as defined in G.S. 130A-290, shall not be disposed in the landfill area. However, yard trash, along with land - clearing debris, may be accepted for processing in the Yard Waste Composting Area. 9. All sedimentation/erosion control activities will be conducted in accordance with the Sedimentation Control Act codified at 15 NCAC 4. Native vegetation shall be established on the completed landfill. 0 10. The following requirements shall be met prior to operation of each phase at this facility: a. Site preparation and/or closure of that area of the MSW unit shall be in accordance with the construction plans. b. Signs shall be posted at the facility in accordance with the Access and Safety Requirements under. Operation Condition No. 5 listed below. C. The existing groundwater monitoring system will be utilized for ground water monitoring of the C&D unit(s) in accordance with .1630 thru .1633. Assessment monitoring shall continue in accordance with Solid Waste Management Rules and any additional requirements set forth by Solid Waste Section Hydrogeologist. d. Closure certification and documentation shall be submitted to the Solid Waste Section and approved by the Section prior to receiving C&D waste in the proposed unit(s). Partial closure of units will be accepted with certification and documentation of partial unit closure submitted for approval. Seeding and stabilization of cover soils shall be performed prior to receiving C&D waste. 11. Operation of the C&D landfill units shall conform to the operating procedures described in the approved plan, in accordance with Section .1626 of the Solid Waste Management Rules, and in accordance with the following requirements: Waste Acceptance and Disposal a. The facility shall accept only those solid wastes which it is permitted to receive. b. No municipal solid waste, hazardous waste, industrial waste, liquid waste or waste not characterized as LCID or C&D shall be accepted for disposal. C. The permittee shall implement a program at the facility for detecting and preventing the disposal wastes listed in item "b" of this section. The program shall include, at a minimum: (i) Random inspections of incoming loads or other comparable procedures: (ii) Records of any inspections; (iii) Training of personnel to recognize hazardous and liquid wastes; (iv) Development of a contingency plan to properly manage any identified wastes listed in item "b" of 3 this section; the -plan must address identification, removal, storage, and final disposition of waste. Cover Material Requirements a. Operational soil cover of at least six inches shall be placed at least once per week or when the active area reaches '4 acre in size or more often as necessitated by the nature of the waste to prevent the site from becoming a visual nuisance and to prevent fire, windblown materials, vectors or water infiltration. b. Areas which will not have additional waste placed on them for 12 months or more, but where final termination of operations has not occurred, shall be covered with a minimum of one foot of soil cover. C. After final termination of disposal operations at the site or major part thereof, or upon revocation of a permit, the fill areas shall be covered with a cap in accordance with .1627 or in accordance with the rules at the time of closure. Access and Safety a. The facility shall be adequately secured by means of gates, chains, berms, fences, or other security measures approved by the DSWM to prevent unauthorized entry. b. An attendant shall be on duty at the site at all times while it is open for public use to ensure compliance with operational requirements. C. The access road to the site shall be of all-weather construction and maintained in good condition. d. Dust control measures shall be implemented when necessary. e. Signs providing information on dumping procedures, the hours of operation, the permit number, and other pertinent information shall be posted at the site entrance. f. Signs shall be posted stating that no MSW, hazardous waste or liquid waste can be received. g. Traffic signs or markers shall be provided as necessary to promote an orderly traffic pattern to and from the discharge area and to maintain efficient operating conditions. h. The removal of solid waste from the facility is prohibited unless the owner/operator approves and the removal is not performed on the working face. 4 1 i. Barrels and drums shall not be disposed of unless they are empty and perforated sufficiently to ensure that no liquid or hazardous waste is contained therein, except fiber drums containing asbestos. j. Open burning of solid waste is prohibited. k. The concentration of explosive gases generated at the facility shall not exceed: i. twenty-five percent of the limit for gases in site structures (excluding gas control or recovery system components) and ii. the lower explosive limit for gases at the facility boundary. Erosion and Sedimentation Control a. Adequate sedimentation and erosion control measures shall be practiced to prevent silt from leaving the site. b. Adequate sedimentation and erosion control measures shall be practiced to prevent excessive on -site erosion. C. Provisions for a vegetative ground cover sufficient to restrain erosion must be accomplished within 30 working days or 120 calendar days upon completion of any phase of C&D landfill development. Drainage Control and Water Protection Requirements a. Surface water shall be diverted from the operational area. b. Surface water shall not be impounded over or in waste. C. A separation distance of at least four feet shall be maintained between waste and the ground -water table. d. Solid waste shall not be disposed of in water. e. Leachate shall be contained on site or properly treated prior to discharge. An NPDES permit may be required prior to discharge of leachate to surface waters. 12. All pertinent landfill operating personnel will receive training and supervision necessary to properly operate this landfill. 13. Ground water quality at this facility is subject to the classification and remedial action provisions referenced in Rule .1634 thru .1637 of 15A NCAC 13B. 14. A closure and post -closure plan must be submitted for approval at least 90 days prior to closure or partial closure of any landfill unit. The plan must include all steps and measures 5 necessary to close and maintain the facility in accordance with all rules in effect at that time. At a minimum, the plan shall address the following: a. Design of a final cover system; using the cap requirements outlined in Rule .1627. Top slopes shall be a minimum of five percent and side slopes a maximum of 25 percent per . 162 7 (3) (A) . b. Construction and maintenance/operation of the final cover system and erosion control structures. C. Surface water, ground water, and explosive gas monitoring. MONITORING AND REPORTING REQUIREMENTS 15. Ground -water monitoring wells and monitoring requirements for the C&D landfill units shall be in accordance with the monitoring system approved in the TRANSITION PLAN for the facility and these additional conditions: a. Monitoring well design and construction shall conform to the specifications outlined in Attachment 2, "North Carolina Water Quality Monitoring Guidance Document for Solid Waste Facilities." b. A geologist shall be in the field to supervise well installation, if necessary. The exact locations, screened intervals, and nesting of the wells shall be established after consultation with the SWS Hydrogeologist at the time of well installation for new monitoring wells. C. For each new monitoring well constructed, a well completion record shall be submitted to DSWM within 30 days upon completion. d. Sampling equipment, procedures, and parameters shall conform to specifications outlined in the above - referenced guidance document, (Attachment 2), or the current guidelines established by DSWM at the time of sampling and in accordance with the approved TRANSITION PLAN OR ASSESSMENT AND REMEDIATION PLAN. e. In order to determine ground -water flow directions and rates, each monitoring well shall be surveyed, and hydraulic conductivity values and effective porosity values shall be established for the screened intervals for each new monitoring well. f. The permittee shall sample the monitoring wells semi- annually or as directed by the SWS Hydrogeologist. C g. A readily accessible unobstructed path shall be initially cleared and maintained so that four-wheel drive vehicles may access the monitoring wells at all times. 16. The permittee shall maintain a record of all monitoring events and analytical data. Reports of the analytical data for each water quality monitoring sampling event shall be submitted to DSWM in a timely manner. 17. The permittee shall maintain a record of the amount of solid waste received at the facility, compiled on a monthly basis. Scales shall be used to weigh the amount of waste received. 18. On or before 01 August of each year (or an earlier date as requested by the Solid Waste Section), the permittee shall report the amount of waste received (in tons) at this facility and disposed of in the landfill to the Solid Waste Section and to all counties from which waste was accepted, on forms prescribed by the Section. This report shall include the following information: a. The reporting period shall be for the previous year, beginning 01 July and ending on 30 June. b. The amount of waste received and landfilled in tons, compiled on a monthly basis, according to Condition 4 described above, and C. Documentation that a copy of the report has been forwarded to all counties from which waste was accepted. 19. All records shall be maintained on -site and made available to the SWS upon request. 20. The Post -Closure plan approved in the TRANSITION PLAN shall be implemented and followed upon capping and closing the operating unit(s). 7 ATTACHMENT 1 List of Additional Documents for the Approved Transition Plan 1. "Application for Construction and Demolition Debris Disposal Facility on Top of Closed Henderson County MSW Landfill" dated 24 June 1998 from Camp Dresser & McKee. 2. "Construction Quality Assurance Report, Partial Closure of the Henderson County Sanitary Landfill" dated 19 June 1998 from Camp Dresser & McKee for the top portion of the Henderson County MSW Landfill. 3. Letter dated 25 October 1999 from Camp Dresser & McKee with revised grading plan (Sheet C-2) requesting expansion of the C&D footprint atop the old MSW Landfill.