STATEMENT OF BASIS. BFI Waste Systems of Arkansas, LLC (Model Fill Landfill) 3817 Mabelvale Pike Little Rock, Arkansas 72204

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1 STATEMENT OF BASIS For the issuance of Air Permit # 1614-AOP-R4 1. PERMITTING AUTHORITY: Arkansas Department of Environmental Quality 5301 Northshore Drive North Little Rock, Arkansas APPLICANT: BFI Waste Systems of Arkansas, LLC (Model Fill Landfill) 3817 Mabelvale Pike Little Rock, Arkansas PERMIT WRITER: Alexander Sudibjo 4. NAICS DESCRIPTION AND CODE: NAICS Description: Solid Waste Landfill NAICS Code: ALL SUBMITTALS: Date of Application Type of Application (New, Renewal, Modification, Deminimis/Minor Mod, or Administrative Amendment) Short Description of Any Changes That Would Be Considered New or Modified 8/4/2016 Minor Mod Replacement of 3,578 scfm flare with 1,600 scfm flare 8/16/2016 Renewal N/A 6. REVIEWER S NOTES: This is the second Title V renewal for this air permit. As of this renewal, the site is closed and not receiving any more waste. Road emissions (SN-03) are removed from the permit. This permit revision also includes a minor modification to replace the existing 3,578 scfm flare with a 1,600 scfm flare. The facility s permitted annual emissions are increasing by 8.3 tpy SO 2. The facility s permitted annual emissions are decreasing by 30.2 tpy PM, 11.5 tpy PM 10, 3.6 tpy VOC, 98.3 tpy CO, 18.1 tpy NOx, and 0.5 tpy total HAPs.

2 Permit #: 1614-AOP-R4 Page 2 of 5 7. COMPLIANCE STATUS: As of August 4, 2016, there are no compliance issues with the facility. 8. PSD APPLICABILITY: a) Did the facility undergo PSD review in this permit (i.e., BACT, Modeling, etc.)? N b) Is the facility categorized as a major source for PSD? N Single pollutant 100 tpy and on the list of 28 or single pollutant 250 tpy and not on list If yes, explain why this permit modification is not PSD. 9. SOURCE AND POLLUTANT SPECIFIC REGULATORY APPLICABILITY: Source Pollutant Regulation (NSPS, NESHAP or PSD) Facility Wide NMOC NSPS Subpart WWW Facility Wide VOC NSPS Subpart WWW Facility Wide Asbestos NESHAP Part 61, Subpart M Facility Wide HAPs NESHAP Part 63, Subpart AAAA 10. EMISSION CHANGES AND FEE CALCULATION: See emission change and fee calculation spreadsheet in Appendix A. 11. AMBIENT AIR EVALUATIONS: a) Reserved. b) Non-Criteria Pollutants: Based on Department procedures for review of non-criteria pollutants, emissions of noncriteria pollutants are below thresholds of concern. 12. CALCULATIONS: SN Emission Factor Source (AP-42, testing, etc.) Emission Factor (lb/ton, lb/hr, etc.) Control Equipment Control Equipment Efficiency Comments 01 AP-42, 2.4 in lb/hr-scfm CH 4 Flare 98% 1,600 scfm flare

3 Permit #: 1614-AOP-R4 Page 3 of 5 SN Emission Factor Source (AP-42, testing, etc.) LandGEM & AP-42, 2.4 Emission Factor (lb/ton, lb/hr, etc.) PM 10 : PM: pollutant concentrations from LandGEM Control Equipment Control Equipment Efficiency Comments (VOC/HAPs) (50% CH 4 ) 48 MMBtu/hr 02 Manuf. Info LandGEM & AP-42, ppm sulfur in lb/mmbtu CO: 0.37 NOx: pollutant concentrations from LandGEM % of max CH 4 max CH 4 : 10,692,307 m 3 /yr 13. TESTING REQUIREMENTS: The permit requires testing of the following sources. SN Pollutants Test Method Test Interval Justification 01 NMOC 14. MONITORING OR CEMS: SN As specified in 40 CFR years Subpart WWW The permittee must monitor the following parameters with CEMS or other monitoring equipment (temperature, pressure differential, etc.) Parameter or Pollutant to be Monitored Method (CEM, Pressure Gauge, etc.) Frequency Report (Y/N) 01 Flowrate Flow Meter Continuous No 01 Temperature Continuous Recorder Continuous No 01 Wellhead Pressure Pressure Gauge Continuous No 15. RECORDKEEPING REQUIREMENTS: The following are items (such as throughput, fuel usage, VOC content, etc.) that must be tracked and recorded.

4 Permit #: 1614-AOP-R4 Page 4 of 5 SN Recorded Item Permit Limit Frequency Report (Y/N) 01 Gas Flowrate 1,600 scfm Continuous No 01 Stack Gas Exit Temperature 01 Wellhead Pressure Facility wide Facility wide Facility wide Interior Wellhead Temperature Nitrogen or Oxygen Concentration at Wellhead Methane Concentration at the surface of the Landfill Current amount of in-place solid waste Incoming shipments of asbestos-containing material 1,400 F to 2,000 F Negative Pressure Continuous Monthly No No 55 C Monthly No 20% Nitrogen or 5% Oxygen Monthly No 500 ppm Quarterly No 6,445,657 tons Monthly Yes N/A Per shipment No Facility wide Landfill Peak LFG 2414 scfm or 44,861 Mg/yr Annually Yes 16. OPACITY: SN Opacity Justification for limit Compliance Mechanism 01 5% Department Guidance Burning only landfill gas 17. DELETED CONDITIONS: Former SC Justification for removal Site is closed and not receiving any more waste 18. GROUP A INSIGNIFICANT ACTIVITIES: Source Name Group A Category PM/ PM 10 IA-1, Leachate Tank (50,000 gal) A (tpy) SO 2 VOC CO NO x HAPs Single Total

5 Permit #: 1614-AOP-R4 Page 5 of VOIDED, SUPERSEDED, OR SUBSUMED PERMITS: List all active permits voided/superseded/subsumed by the issuance of this permit. Permit # 1614-AOP-R3

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7 APPENDIX A EMISSION CHANGES AND FEE CALCULATION

8 Fee Calculation for Major Source Facility Name: BFI Waste Systems of Arkansas, LLC - Model Fill Landfill Permit Number: 1614-AOP-R4 Revised $/ton factor Annual (tpy) 100 Permit Type Minor Mod Permit Fee $ 500 Minor Modification Fee $ 500 Minimum Modification Fee $ 1000 Renewal with Minor Modification $ 500 Check if Facility Holds an Active Minor Source or Minor Source General Permit If Hold Active Permit, Amt of Last Annual Air Permit Invoice $ 0 Total Permit Fee (tpy) Initial Title V Permit Fee (tpy) HAPs not included in VOC or PM: Air Contaminants: Chlorine, Hydrazine, HCl, HF, Methyl Chloroform, Methylene Chloride, Phosphine, Tetrachloroethylene, Titanium Tetrachloride All air contaminants are chargeable unless they are included in other totals (e.g., H2SO4 in condensible PM, H2S in TRS, etc.) Pollutant (tpy) Check if Emission Old Permit New Permit Change in PM Permit Fee Annual PM PM 2.5 SO VOC CO NO X Total HAPs

9 Pollutant (tpy) Check if Emission Old Permit New Permit Change in Permit Fee Annual HCl ,1,2,2-Tetrachloroethane Acrylonitrile Toluene Vinyl chloride