2023-10-25 · Arbor Hills Landfill · evidence · notable
On October 20, 2023, EGLE inspectors identified nuisance odors near residential addresses in the Steeplechase subdivision adjacent to Arbor Hills Landfill and issued a Violation Notice. Arbor Hills responded that the odors originated from routine landfill operations—specifically the removal of daily cover material in Cell 6A approximately 1,800 feet away—and committed to deploying odor-mitigating fans during future cover removal and filling operations to minimize off-site impacts.
Key data point: Nuisance odors detected at 50937 and 17369 Briar Ridge Lane, Steeplechase subdivision, October 20, 2023; odors originated from Cell 6A disposal area, approximately 1,800 feet from complainant addresses; odors dissipated by 10:30 AM.
2023-10-25 · Arbor Hills Landfill · evidence · notable
EGLE issued a Violation Notice to Arbor Hills Landfill on October 25, 2023, for failure to control odor nuisance in violation of Part 115 rules. Despite the landfill's remedial actions, approximately 30 odor complaints were received between October 17–20, 2023, and nuisance odors were confirmed by EGLE inspectors near the northeast corner and nearby residential addresses. The notice triggers a 72-hour investigation requirement under Consent Judgment 2020-0593-CE.
Key data point: Approximately 30 odor complaints received October 17–20, 2023; nuisance odors confirmed by EGLE inspection at northeast corner of landfill and at 50937 Briar Ridge Lane and 17369 Briar Ridge Lane, October 20, 2023.
2023-10-20 · Arbor Hills Landfill · procedural · routine
EGLE conducted an unannounced asbestos NESHAP compliance inspection at Arbor Hills Landfill on October 20, 2023. GFL provided written procedures for accepting asbestos-containing waste and made available two years of records, location maps, and training documentation. EGLE identified a minor procedural gap regarding load-inspection documentation and advised on signage placement during deposition.
Key data point: No violations found; one typographical error on a third-party notification was confirmed as clerical. GFL lacks signed checklists documenting load inspections, which EGLE recommended implementing.
2023-10-20 · Arbor Hills Landfill · procedural · notable
Arbor Hills submitted a 7-day progress update to EGLE on October 20, 2023, detailing remedial measures taken in response to a Violation Notice issued October 10, 2023. The company reported installing gas collection pipes, geosynthetic clay liners, vacuum lines to leachate cleanout risers, and lateral piping to caisson wells in Cell 6A to address landfill gas emissions and odor issues.
Key data point: No specific measured readings provided. Document is a procedural update on remedial construction activities in response to a violation notice; it includes equipment specifications and installation dates but no temperature, CO, or other quantitative environmental measurements.
2023-10-20 · Arbor Hills Landfill · evidence · notable
A photograph documents asbestos-specific warning signage posted at the Arbor Hills Landfill front gate as of October 2023, indicating the site has acknowledged the presence of asbestos-containing waste materials on the property.
Key data point: Asbestos-specific warning sign physically posted at front gate, October 2023—evidence of known asbestos hazard at the facility.
2023-10-20 · Arbor Hills Landfill · procedural · routine
This document is a site overview evaluation image filed on 2023-10-20. No specific factual claims, measurements, or regulatory content are visible in the provided text.
Key data point: No specific factual reading or claim extracted from this document.
2023-10-19 · Arbor Hills Landfill · evidence · notable
Arbor Hills received a violation notice on October 10, 2023, for verified odors exceeding R299.4433(1)(c) standards on 6-Mile Road and Napier Road near the landfill (October 5–6, 2023). The facility conducted a root-cause investigation identifying odor sources in Cell 6A and implemented remedial measures including clay placement, gas collection piping, and vacuum systems, which the company states have eliminated the odor source.
Key data point: Violation Notice issued October 10, 2023, for verified odor exceedances on 6-Mile Road (between Napier and Crestbrook) and Napier Road near northeast corner, October 5–6, 2023; source traced to Cell 6A.
2023-10-18 · Arbor Hills Landfill · evidence · routine
This is a stack emissions test report for four landfill-gas-fueled turbines at the Arbor Hills Energy facility (SRN N2688) conducted October 18-19, 2023. All measured air pollutant emission rates (NOx, CO, SO2, VOC, formaldehyde, and HCl) were below their permitted limits.
Key data point: All measured emissions compliant: EUTURBINE/DB1 NOx 6.70 lb/hr (limit 11.3), EUTURBINE4 CO 11.1 lb/hr (limit 13.2), October 18-19, 2023.
2023-10-18 · Arbor Hills Landfill · evidence · notable
EGLE conducted a two-day stack-test observation (October 17–19, 2023) at Arbor Hills Energy LLC's turbine and emissions-control equipment under PTI 68-23 and Consent Decree 5:21-cv-12098-SDD-EAS. The facility failed to fully comply with the approved test protocol: turbines shut down unexpectedly on day one with a switchover to diesel fuel (visible black smoke for ~30 minutes), ductburners were not tested despite permit requirement, and only maximum-load testing was performed instead of the federally mandated variable-load testing for NOx.
Key data point: Turbine 1 & 2 abruptly shut down on 10/17/2023 and defaulted to diesel fuel with visible black smoke (approximately 30 minutes duration); potential violation of permit conditions where diesel use is permitted for start-up only. Testing on 10/18–10/19 not fully conducted in accordance with approved protocol (ductburners not tested, variable-load testing for NOx deferred).
2023-10-16 · Arbor Hills Remediation Area · evidence · routine
This is a Discharge Monitoring Report (DMR) for the Arbor Hills Remediation Area covering September 2023, filed under NPDES permit MI0045713 v6.0. The report documents water-quality parameters at the treatment pond discharge outfall, with "No Discharge" marked for the period. The document lists permit limits and monitoring frequencies for parameters including suspended solids, biochemical oxygen demand, ammonia, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, and dissolved oxygen.
Key data point: No specific measured values are provided in this form—only parameter names, permit limits, and monitoring schedules. All data fields marked with asterisks (*****), indicating no discharge occurred during the reporting period.
2023-10-10 · Arbor Hills Energy · procedural · routine
This is a Permit to Install (PTI 68-23) issued by Michigan EGLE to Arbor Hills Energy, LLC on May 31, 2023 (revised October 12, 2023) authorizing installation and operation of four landfill-gas-fired turbines and associated equipment at the Arbor Hills landfill (SRN N2688). The permit sets emission limits for NOx, CO, SO2, VOC, formaldehyde, and hydrogen chloride, with monitoring and testing requirements under federal NSPS and NESHAP standards.
Key data point: No measured readings reported. This is a procedural permit document setting permitted ceilings and operational restrictions; it contains no field measurements or violation data.
2023-10-10 · Arbor Hills Landfill · evidence · notable
This is a Full Compliance Evaluation (FCE) completed by EGLE's Air Quality Division on September 21, 2023, covering Arbor Hills Landfill (SRN N2688) from September 1, 2022 through September 21, 2023. The evaluation documents the facility's compliance status across multiple regulatory frameworks including MACT/NESHAP, ROP, and the Consent Judgment (CJ No. 2020-0593-CE), finding overall compliance while noting multiple deviations and operational issues. The document reviews 16 months of quarterly WOI (Wells of Interest) reports, perimeter monitoring data, leachate levels, gas readings, and corrective actions related to subsurface overheating management.
Key data point: Hottest WOI well measured at 160.5°F (W312R, Jan/Feb 2023); 26 SEM exceedances in Q3 2022, 70 in Q4 2022; leachate levels peaked at AHW 2,350,754 and AHE 833,749 (March 2023); methane exceedances beyond perimeter documented; multiple flare temperature deviations and collection system shutdowns (46 times in 1st half 2023); LEL gas probes continue to exceed 1000 ppm.
2023-10-10 · Arbor Hills Landfill · evidence · notable
EGLE issued a violation notice to Arbor Hills Landfill on October 10, 2023, documenting odor violations detected during inspections on October 5–6, 2023 at six-mile and Napier roads near the facility. The violations breach R299.4433(1)(c) requiring that landfill gases not create a nuisance at the property boundary, and trigger a 72-hour investigation and remediation-plan requirement under Consent Judgment 2020-0593-CE.
Key data point: Odor violations verified on 6-Mile Road (between Napier and Crestbrook) and Napier Road (northeast corner), October 5–6, 2023; Consent Judgment 2020-0593-CE breach.
2023-10-06 · Arbor Hills Remediation Area · evidence · routine
This document appears to be a photograph or image file dated October 5, 2023, with minimal or no extractable textual content regarding environmental monitoring or regulatory findings.
Key data point: No specific factual reading or claim is discernible from an image file without accompanying documentation.
2023-10-06 · Arbor Hills Remediation Area · evidence · routine
This document is labeled as a photograph or image file from October 5, 2023, with no accompanying text or data provided.
Key data point: No text or specific factual claims present; document appears to be an image with no readable content supplied.
2023-10-06 · Arbor Hills Remediation Area · (unprocessable source) · skipped
Source not classifiable after 5 attempts: ocrmypdf failed (rc=4): Output file: The generated PDF is INVALID
2023-10-03 · Arbor Hills Energy · procedural · routine
This is the Michigan Department of Environment, Great Lakes, and Energy Air Quality Division's Permit to Install (PTI 68-23) for Arbor Hills Energy, LLC (SRN N2688), issued October 2, 2023. The permit authorizes installation and operation of four landfill-gas-fueled turbines (three EGT-Typhoon combined cycle units and one Solar simple cycle unit) with associated duct burners and sulfur treatment systems. The permit sets emission limits for NOx, CO, SO2, VOC, formaldehyde, and hydrogen chloride, along with detailed monitoring, testing, and recordkeeping requirements.
Key data point: No measured temperature, CO, or other subsurface oxidation readings are present in this document. This is a procedural air permit installation authorization, not an operational status or violations report.
2023-09-28 · Emerald RNG · procedural · routine
This is a Permit to Install (PTI 67-23) issued by Michigan's Air Quality Division in September 2023 to Emerald RNG, LLC and Arbor Hills RNG, LLC for a renewable natural gas (RNG) plant at Arbor Hills Landfill (SRN N2688). The permit authorizes installation of three emission units: an RNG processing plant (10,000 scfm capacity), a thermal oxidizer (4,534 scfm), and a backup open flare (3,720 scfm), with specified operational limits and monitoring requirements.
Key data point: No specific measured readings. Document is a permit template with operational limits and design parameters (e.g., thermal oxidizer minimum destruction temperature 1,450°F, NOx limit 0.06 lb/MMBTU hourly, CO limit 0.20 lb/MMBTU hourly) but contains no actual field measurements or violations.
2023-09-26 · Arbor Hills Remediation Area · procedural · routine
GFL Environmental's site engineer Antonio Testa provides EGLE regulator Matt Konieczki with progress updates on ditch cleaning, check-dam installation (approximately 30 to date), pond sediment removal (10–15% complete, targeting end of 2023), and planned seeding and slope stabilization. EGLE requests confirmation of sediment control measures and timeline details.
Key data point: No specific factual readings or violations stated; document is a routine operational progress update with completion estimates (pond by end of 2023, ditch seeding by late November).
2023-09-26 · Arbor Hills Remediation Area · procedural · routine
GFL Environmental provided progress updates to EGLE on ditch cleaning, check dam installation, and pond sediment removal work at Arbor Hills Landfill between September 18–25, 2023. The company reported installing approximately 30 check dams (roughly every 100 feet), reshaping and seeding a downhill chute, and beginning pond cleaning with removal of 10–12 feet of sediment, aiming to complete by end of 2023.
Key data point: Approximately 30 check dams installed to date (roughly 100 feet apart); pond cleaning commenced September 15, 2023, with 10–15% complete and target completion by end of 2023.
2023-09-21 · Arbor Hills Landfill · evidence · notable
EGLE conducted a full compliance evaluation and partial compliance inspection of Arbor Hills Landfill on September 21, 2023, including surface emission monitoring (SEM) surveys, flare inspections, and records review. The facility was found in substantial compliance with its ROP, PTI 79-17, and federal standards. AQD identified 31 SEM hits (mostly at erosion rills and dead grass spots in final cover), required H2S readings to be added to quarterly SEM reports, and noted that three wells became subject to Enhanced monitoring under MACT AAAA for high temperatures.
Key data point: Three wells newly subject to Enhanced monitoring for temperatures >145°F: AHWW0313, AHWW0287, AHWWTS01 (as of September 2023); 31 SEM methane hits recorded on inspection date; H2S exceeded 326 ppm limit multiple times, requiring weekly sampling until Sulfur Treatment System commenced 5/5/23.
2023-09-20 · Arbor Hills Remediation Area · procedural · routine
This document appears to be a set of photographs from a mobile device showing ditches and pond areas, likely at or near the Arbor Hills Landfill site. No text, measurements, or substantive regulatory information is provided in the filing.
Key data point: No specific factual claim or measurement is stated in this document; it is a picture collection without accompanying narrative or data.
2023-09-20 · Arbor Hills Remediation Area · evidence · routine
EGLE Inspector Matt Konieczki conducted a complaint inspection at Arbor Hills Landfill on August 31, 2023. The document consists primarily of photographs and inspection notes, though the text is largely illegible in the provided format.
Key data point: No specific quantitative findings or violation data are legible in this inspection report.
2023-09-20 · Arbor Hills Remediation Area · procedural · routine
GFL Environmental provides EGLE regulator Matt Konieczki with a progress update on ditch cleaning, check dam installation, pond sediment removal, and slope stabilization work at Arbor Hills Landfill as of mid-September 2023. Konieczki offers technical recommendations on seeding timing, temporary sediment controls, and erosion prevention. The exchange reflects routine regulatory coordination on site maintenance and stormwater management.
Key data point: As of September 19, 2023, approximately 30 check dams installed, 10-15% of pond cleaned with 10-12 feet of sediment removal planned across the entire pond, completion targeted by end of 2023.
2023-09-20 · Arbor Hills Remediation Area · procedural · routine
GFL Environmental site engineer Antonio Testa sent progress pictures to EGLE regulator Matt Konieczki on September 18, 2023, regarding ditch and check dam work at Arbor Hills Landfill. The email contains only a photo attachment with no descriptive text about the work status or findings.
Key data point: No specific factual claim or measurement provided; email is a brief cover note for attached photographs with no narrative detail.
2023-09-11 · Arbor Hills Remediation Area · procedural · routine
This is a monthly Discharge Monitoring Report (DMR) for the Arbor Hills Remediation Area covering August 2023 under permit MI0045713 v6.0. The report documents treatment pond discharge monitoring for multiple water quality parameters including suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFOA/PFBS, temperature, pH, and dissolved oxygen. The document indicates "No Discharge" for the monitoring period, meaning the treatment pond was not actively discharging during August 2023.
Key data point: No quantitative measured readings are provided in this document; it is a template/permit requirement schedule showing parameter limits and reporting requirements but no actual August 2023 data values.
2023-08-24 · evidence · notable
EGLE Air Quality Division conducted an on-site inspection at Arbor Hills Landfill on August 24, 2023, to test a new LaserMethane Smart device for methane detection and observe operations at the landfill and adjacent Arbor Hills Energy RNG facility. The inspection documented recent flood damage, Cell 6 expansion, methane and hydrogen sulfide measurements, and oxygen levels in the gas treatment system.
Key data point: Hydrogen sulfide inlet reading ~350 ppm via Draeger tubes; oxygen at 2.81% (elevated from 1% prior day); methane from air vent at 100 ppm × m; no leaks detected via LaserMethane survey.
2023-08-11 · Arbor Hills Remediation Area · procedural · routine
This is a monthly Discharge Monitoring Report (DMR) for July 2023 covering the Arbor Hills Remediation Area treatment pond under permit MI0045713 v6.0. The report documents water quality parameters including suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFAS compounds (PFOS, PFBS, PFOA), temperature, pH, and dissolved oxygen. The report indicates "No Discharge" for all outfalls during the reporting period.
Key data point: No actual measured readings are provided in this DMR; all daily data fields are marked with asterisks (*****), indicating the data was not populated or submitted.
2023-07-17 · Arbor Hills Remediation Area · evidence · routine
This is a Discharge Monitoring Report (DMR) for the Arbor Hills Remediation Area covering June 2023, filed by Green for Life under permit MI0045713 v6.0. The report documents monitoring of treatment pond discharge with parameters including flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, and dissolved oxygen. The document indicates "No Discharge: Y" for all monitoring sets, meaning no actual effluent discharge occurred during the reporting period.
Key data point: No quantitative measurements reported; all discharge parameter data cells marked with asterisks or blank; document indicates no discharge occurred during June 2023 monitoring period.
2023-07-14 · Arbor Hills Remediation Area · opinion · notable
The Conservancy Initiative requests Green for Life Environmental implement a monthly monitoring program to track PFAS discharges from Arbor Hills Landfill into Johnson Creek. The letter cites a June 2021 EGLE Violation Notice for stormwater discharge exceeding water quality standards for PFOS, and notes that every publicly available analysis since 2020 has exceeded PFOS standards.
Key data point: Every publicly available analysis of stormwater discharge from Arbor Hills Landfill into Johnson Creek since 2020 has exceeded PFOS water quality standards (limit: <12 ng/l); June 2021 EGLE Violation Notice issued for non-compliance.
2023-07-14 · Arbor Hills Remediation Area · opinion · notable
The Conservancy Initiative urges Green for Life Environmental to implement monthly monitoring of stormwater effluent from Arbor Hills Landfill for PFAS contamination, with results reported to EGLE and the public. The letter documents a pattern of PFOS exceedances in Johnson Creek since 2020 and notes that the facility faces a Violation Notice from June 2021 and a leachate spill incident in August 2022. The proposal frames early monitoring as a low-cost good-faith gesture ahead of a forthcoming Administrative Consent Order.
Key data point: Every publicly available stormwater analysis from AHL since 2020 has exceeded PFOS water quality standards (12 ng/L); August 2022 leachate spill required remediation and periodic groundwater monitoring over two years.
2023-07-06 · Arbor Hills Landfill · procedural · routine
EGLE Air Quality Division received notification on July 6, 2023 from Opal Fuels that the Sulfur Treatment System (STS) at Arbor Hills Landfill will be offline July 10–12, 2023 for maintenance and inspection related to the Emerald RNG Plant startup. The STS had begun operating in shakedown mode on May 5, 2023 and was meeting the 20 ppmv LFG Treatment Standard when operational.
Key data point: STS offline July 10–12, 2023 for construction and aftercooler inspection; system met 20 ppmv LFG Treatment Standard when operational during shakedown period starting May 5, 2023.
2023-06-29 · evidence · notable
EGLE air quality staff conducted an unannounced site visit on June 29, 2023, to inspect the Emerald RNG plant at Arbor Hills Landfill. Inspectors identified two methane leaks in the Sulfur Treatment System (STS)—a minor leak (<100 ppm) at a pipe flange and a significant leak (5000 ppm) from a cracked vent nipple producing moderate hydrogen sulfide odors. The facility's Commissioning Manager agreed to take the STS offline briefly to repair the leaks.
Key data point: 5000 ppm methane leak detected at STS vent nipple with moderate H2S odors, June 29, 2023; repaired same day after EGLE notification.
2023-06-29 · Arbor Hills Remediation Area · evidence · notable
EGLE responds to The Conservancy Initiative's March 2023 letter regarding Arbor Hills Landfill's stormwater and groundwater discharges to Johnson Drain, confirming that PFAS contamination has been documented in multiple samples since 2020. EGLE states it issued a Violation Notice in June 2021 requiring stormwater sampling, received GFL's final report in February 2022 showing exceedances of water quality criteria, and is pursuing an Administrative Consent Order to mandate periodic monitoring and corrective actions. The Conservancy's June 2023 sampling found PFOS at 49 ng/L (four times acceptable levels) in the Johnson Creek tributary directly downstream of the landfill.
Key data point: PFOS measured at 49 ng/L in Johnson Creek tributary directly downstream of Arbor Hills Landfill, June 2023 (four times acceptable standard); EGLE also measured PFOS at 16.5 ppt at landfill stormwater discharge point (August 5, 2021) and 5.7–49.5 ppb in brown trout fillets from Fish Hatchery Park.
2023-06-29 · Arbor Hills Landfill · procedural · routine
EGLE Air Quality Division issued a reminder to Arbor Hills Landfill (N2688) on June 29, 2023, requiring the facility to update its Renewable Operating Permit (ROP) application following issuance of two Permits to Install (PTI). The facility's consultant was reviewing permit conditions for a new Emerald RNG section and revised air handling equipment before submitting updated forms.
Key data point: No specific factual readings or measurable data provided; document is administrative correspondence regarding permit application procedures.
2023-06-20 · Arbor Hills Remediation Area · evidence · routine
This is a Discharge Monitoring Report (DMR) for Arbor Hills Remediation Area covering May 2023. The document reports on treatment-pond discharge parameters including flow, suspended solids, CBOD5, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, dissolved oxygen, and outfall observations. The report indicates 'No Discharge' for the period.
Key data point: Document contains permit parameter limits and monitoring requirements (e.g., TSS max daily 30 mg/L, CBOD5 max daily 10 mg/L, ammonia nitrogen max daily 2.0 mg/L, mercury 12-month rolling average 2.0 ng/L) but does not provide actual measured values for May 2023—only the structure and framework for reporting.
2023-06-12 · Arbor Hills Landfill · procedural · routine
EGLE received a notification from Arbor Hills Energy that the Sulfur Treatment System (STS) would be offline on June 15, 2023, for construction related to startup of the Emerald RNG Plant. The facility reported that the STS had been operating in shakedown mode since May 5, 2023, and was meeting the LFG Treatment Standard of 20 ppmv when operational, with planned future notifications for any additional shutdowns.
Key data point: STS meeting LFG Treatment Standard of 20 ppmv when operational as of June 12, 2023 notification; planned offline window June 15, 2023, 9 a.m.–1 p.m.
2023-06-09 · Arbor Hills Remediation Area · evidence · notable
EGLE responds to The Conservancy Initiative's concerns about PFAS contamination in stormwater discharges from Arbor Hills Landfill into Johnson Creek. The agency confirms that stormwater discharges have exceeded water quality standards, a violation notice was issued in 2021, and an Administrative Consent Order is being developed to require periodic monitoring and corrective actions. EGLE's own sampling found PFOS at 16.5 ppt in the landfill's stormwater discharge and in fish tissue at 5.7–49.5 ppb downstream.
Key data point: PFOS in stormwater discharge from AHLF: 16.5 ppt (August 5, 2021); PFOS in brown trout fillets from Johnson Drain: 5.7–49.5 ppb (August 5, 2021); TCI sample: 49 ng/l PFOS (four times acceptable level) in unnamed tributary directly downstream of landfill (June 2023).
2023-06-02 · Arbor Hills Landfill · procedural · routine
EGLE Air Quality Division documented a Sulphur Recovery Unit (STS) malfunction notification and its resolution at Arbor Hills Landfill on June 2, 2023. The STS system, which treats landfill gas to meet a 20 ppmv LFG Treatment Standard under the Consent Decree, was offline for planned maintenance from May 30 to June 2, 2023 to address vibration issues and safety concerns. The system was restored to online status at 12:34 p.m. on June 2, 2023.
Key data point: STS system offline May 30–June 2, 2023 for Vilter blower skid modifications; system met 20 ppmv LFG Treatment Standard when operational under Consent Decree First Amendment (Civil No. 5:21-cv-12098-SDD-EAS).
2023-05-31 · Arbor Hills Energy · procedural · routine
This is a Permit to Install (PTI) for landfill-gas-fired turbines and duct burners at Arbor Hills Energy, LLC (SRN N2688), issued May 31, 2023. The permit authorizes four turbine units (three EGT-Typhoon combined-cycle units and one Solar simple-cycle unit) to combust desulfurized landfill gas for electricity generation, with comprehensive emission limits for NOx, CO, SO2, VOC, formaldehyde, and hydrogen chloride. The document specifies monitoring, testing, recordkeeping, and operational restrictions to ensure compliance with state and federal air quality standards.
Key data point: Total reduced sulfur concentration in landfill gas shall not exceed 20 ppmv measured as H2S (hourly basis); annual NOx limits for combined flexible group FGPROJECT23 are 81.3 tons per year.
2023-05-31 · Arbor Hills Energy · procedural · routine
This Response to Comments document addresses public input on two air permits (Nos. 67-23 and 68-23) for renewable natural gas (RNG) and sulfur treatment system projects at Arbor Hills Landfill. The Michigan Department of Environment, Great Lakes, and Energy (EGLE) Air Quality Division made several permit modifications based on comments, including clarifications on hydrogen sulfide sampling frequency, pipeline routing requirements, preventative maintenance documentation, and emission calculation methods. The AQD rejected requests to prohibit untreated gas from being burned in existing flares and denied calls for facility closure, citing local zoning authority and ongoing gas production from decomposition.
Key data point: Hydrogen sulfide (H2S) outlet concentration limit of 20 ppmv for the sulfur treatment system, with sampling requirements specified in permit conditions SC V.1 (weekly initially, then monthly).
2023-05-31 · Arbor Hills Energy · procedural · routine
EGLE approved Permit to Install No. 68-23 on May 31, 2023, for Arbor Hills Energy LLC's landfill gas treatment and combustion system at the Arbor Hills Landfill (SRN N2688) in Northville, Michigan. The permit was issued with modifications after a public hearing and comment period. The equipment remains subject to Renewable Operating Permit requirements and associated administrative rules.
Key data point: No specific factual readings or measured data provided; this is a procedural permit approval letter dated May 31, 2023.
2023-05-31 · Arbor Hills Energy · procedural · routine
This is an Air Permit to Install filed on May 31, 2023, circulated to interested parties including state and local officials, EPA Region 5, and project stakeholders (Emerald RNG/Arbor Hills Energy and Opal Fuels). The document itself is a distribution list with no substantive permit conditions, measurements, or technical findings disclosed in the excerpt provided.
Key data point: No specific factual readings or permit limits are stated in this excerpt; it is a cover page listing interested parties and recipients.
2023-05-31 · Emerald RNG · procedural · routine
This is a Response to Comments document for air permits (PTI Nos. 67-23 and 68-23) issued May 31, 2023 by Michigan's Air Quality Division for the Arbor Hills Landfill renewable natural gas (RNG) and sulfur treatment system (STS) projects. The AQD reviewed 6 written and 2 verbal public comments and made several clarifications and minor permit modifications in response, including correcting monitoring frequency language for hydrogen sulfide sampling and adding specificity to preventative maintenance and emissions calculation requirements. The document addresses community concerns about odors, landfill gas burning in flares, proximity to schools and residences, and facility violations history, with the AQD defending its permitting authority and explaining technical compliance rationales.
Key data point: Hydrogen sulfide (H2S) or total reduced sulfur (TRS) landfill gas monitoring requirement set at threshold of 20 ppmv; if exceeded, weekly sampling required until maintained below 20 ppmv for one month; flares permitted to burn landfill gas with sulfur content up to 408 ppmv.
2023-05-31 · Emerald RNG · procedural · routine
This is a Permit to Install (PTI) for Emerald RNG, LLC and Arbor Hills RNG, LLC for a renewable natural gas (RNG) plant at Arbor Hills Landfill (SRN N2688), issued May 31, 2023. The permit authorizes three emission units: an RNG processing plant (EURNGPLANT), a thermal oxidizer (EURNGTOX), and an open flare (EUOFRNG) to treat and refine landfill gas into pipeline-quality natural gas. The document establishes operational limits, emission standards, and monitoring/recordkeeping requirements for these facilities.
Key data point: No measured temperature or air quality readings are provided. This is a procedural permit document that establishes permitted operating limits (e.g., thermal oxidizer destruction temperature minimum 1,450°F; NOx limit 0.06 lb/MMBTU for EURNGTOX) but contains no actual measured data.
2023-05-31 · Emerald RNG · procedural · routine
EGLE approved a Permit to Install (PTI No. 67-23) on May 31, 2023, for Emerald RNG/Arbor Hills RNG to construct and operate a renewable natural gas processing plant at the Arbor Hills Landfill (SRN N2688) in Northville, Michigan. The permit was granted with modifications following a public hearing and comment period, subject to compliance with specified administrative rules and conditions.
Key data point: PTI No. 67-23 approved May 31, 2023, for RNG processing plant installation at Arbor Hills Landfill (SRN N2688); modifications made following public hearing (May 18, 2023) and comment period (ended May 22, 2023).
2023-05-31 · Emerald RNG · procedural · routine
This is an Air Permit to Install filing dated May 31, 2023, addressed to interested parties including state and federal environmental agencies, local officials, and project stakeholders. The document appears to be a procedural notice distributing the permit application to relevant parties for comment and review.
Key data point: No specific factual readings or measurements provided in the excerpt; this is a procedural distribution list.
2023-05-31 · Emerald RNG · procedural · routine
EGLE issued a revised Permit to Install No. 67-23 on September 28, 2023, for a renewable natural gas (RNG) facility at Arbor Hills Sanitary Landfill (SRN N2688). The revision corrects typographical errors in the supplement dated September 29, 2023, and the facility operator must comply with all enclosed permit conditions.
Key data point: No specific factual reading or measurement provided. This is a procedural letter correcting permit documentation.
2023-05-31 · Emerald RNG · procedural · routine
This is a Permit to Install (PTI) issued May 31, 2023, for Emerald RNG, LLC and Arbor Hills RNG, LLC (SRN N2688) authorizing a renewable natural gas (RNG) plant designed to process up to 10,000 scfm of landfill gas, along with a thermal oxidizer and backup open flare for emission control. The permit establishes operational limits, monitoring requirements, and emission standards for NOx and CO from the three emission units.
Key data point: No measured readings are provided in this permit document; it establishes permitted design capacities and emission limits only (e.g., thermal oxidizer rated 4,534 scfm, 1,450°F minimum operating temperature; NOx limit 0.06 lb/MMBTU; CO limit 0.20 lb/MMBTU).
2023-05-26 · Arbor Hills Landfill · procedural · routine
EGLE received notification from Arbor Hills Energy of a planned 4-day shutdown of the Syngas Treatment System (STS) from May 30 to June 2, 2023 for repairs and improvements to the Vilter blower skid. The facility confirmed that gas collection and vacuum maintenance would continue via the AHE plant and GFL flares during the downtime, with no impact expected on gas control compliance.
Key data point: STS malfunction repair planned May 30–June 2, 2023; landfill gas collection and vacuum control to be maintained by AHE plant and GFL flares during downtime.