2025-07-11 · Arbor Hills Landfill · procedural · routine
Arbor Hills Landfill submitted its Second Quarter 2025 Perimeter Monitor Root Cause Analysis Investigation Report to EGLE on July 11, 2025, in compliance with Consent Judgment No. 2020-0593-CE. The report documents the facility's systematic investigation procedure for perimeter monitoring alarms (40 ppm methane or 7 ppm H2S action levels) and includes multiple root cause analyses conducted in April 2025. All documented investigations found no cover concerns, no leachate collection system issues, and no compost facility concerns.
Key data point: Perimeter monitor action level thresholds: 40 ppm methane, 7 ppm hydrogen sulfide. Multiple root cause analyses conducted April 2–28, 2025 documented no deficiencies identified.
2025-07-08 · Arbor Hills Landfill · evidence · urgent
GFL – Arbor Hills Landfill submitted its 2025 First Semi-Annual WOI (Wells of Interest) Status Report to EGLE detailing landfill gas monitoring, well performance, and subsurface conditions from January through June 2025. The report documents ongoing gas extraction infrastructure improvements, well replacements, and temperature/chemical monitoring across the monitored well network, with no new subsidence, cracks, or geysers reported since 2019.
Key data point: Well AHWW0279 reached 156.1°F on 6/24/2025 (permitted HOV ceiling: 155°F); consistent measured temperatures at or near 155°F limit across multiple WOI wells (AHWW0279, AHWW312R2); methane 48–53%, oxygen 1.3–1.8% in landfill gas.
2025-07-03 · Arbor Hills Energy · procedural · routine
This is a Stack Test Protocol submitted by Impact Compliance & Testing, Inc. on behalf of Arbor Hills Energy for compliance testing of three EGT-Typhoon gas-fired turbines at the Arbor Hills Landfill (SRN N2688) under Permit to Install 68-23A. The protocol outlines procedures for measuring NOx and SO2 emissions from landfill-gas-fueled turbines using standardized EPA and ASTM methods, with testing planned for February 18, 2025 and August 5, 2025.
Key data point: No specific measured emissions data provided; this is a pre-test protocol document. Estimated flue gas temperature 500°F and O2 content 15.9% at exhaust stack; SO2 limit 0.5 lb/hr; NOx subject to 40 CFR Part 60 Subpart GG.
2025-07-03 · Arbor Hills Energy · procedural · routine
Arbor Hills Energy is conducting a stack test on August 5, 2025, to measure NOx and SO2 emissions from a 5.2 MW Solar Taurus turbine (EUTURBINE4) fueled by landfill gas at the Arbor Hills Landfill facility. The protocol outlines EPA-compliant sampling, analytical, and quality-assurance procedures to verify compliance with PTI No. 68-23A v2.0 emission limits of 74 ppmvd NOx @ 15% O2 and 0.41 lb/hr SO2.
Key data point: EUTURBINE4 permitted NOx limit: 74 ppmvd @ 15% O2 or 3.6 lb/MWhr; SO2 limit: 0.41 lb/hr and 0.15 lb/MMBtu; turbine exhaust temperature estimated at 930°F.
2025-07-03 · Arbor Hills Landfill · procedural · routine
Arbor Hills Landfill submitted a Consent Judgment-mandated action plan on July 1, 2025, addressing recommendations from a third-party Tetra Tech engineering evaluation completed in May 2025 regarding leachate minimization and stormwater control. The plan details ongoing maintenance of diversion berms, downcute repairs, and vegetation seeding across the site, with Tetra Tech finding that current grading and cover systems are generally capable of diverting stormwater and preventing excessive infiltration.
Key data point: Third-party engineering evaluation by Tetra Tech on May 21, 2025 found interim, temporary, and final cover systems in good condition with no ponding areas observed; current stormwater diversion provisions adequate for upcoming quarter.
2025-06-27 · Arbor Hills Energy · procedural · routine
An EGLE air quality official reminds OPAL Fuels (Arbor Hills' operator) that a revised PTI (Permit to Install) 68-23A v2.0, effective June 6, 2025, requires updated ROP (Renewable Operating Permit) modification forms, and that a violation notice response regarding corrective actions and stack testing must be updated in the MiEnviro portal.
Key data point: No specific factual reading or measurement. This is a procedural reminder to submit permit modification documents and respond to a violation notice.
2025-06-24 · procedural · notable
EGLE received 21 odor complaints over the weekend of 6/20–6/22, 2025, centered around Friday. GFL investigated and reported 19 complaints on record, finding no unusual operations, no perimeter monitoring alarms, and no compost activity during the period; wind patterns and third-party construction activities were reviewed with no issues identified.
Key data point: 21 odor complaints received by EGLE over weekend 6/20–6/22/2025; GFL records 19 complaints and reports no operational anomalies or perimeter alarms.
2025-06-23 · Arbor Hills Remediation Area · procedural · routine
This is a May 2025 Discharge Monitoring Report (DMR) for the Arbor Hills Remediation Area treatment pond (Permit MI0045713 v6.0), filed June 23, 2025. The report documents required monitoring of flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, dissolved oxygen, and outfall observations. All monitoring parameters are marked 'No Discharge: Y,' indicating no measurable discharge occurred during the reporting period.
Key data point: No discharge recorded for May 2025; all parameters reported as (Report) or marked "no discharge." Specific measured values not provided in this form submission.
2025-06-23 · Arbor Hills Remediation Area · procedural · routine
This is a monthly Discharge Monitoring Report (DMR) for May 2025 covering the Arbor Hills Remediation Area treatment pond discharge under permit MI0045713 v6.0. The document shows that there was "No Discharge" (Y) recorded for the monitoring period, meaning no effluent was released to the receiving water. The report includes permit limits for flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, and dissolved oxygen.
Key data point: No Discharge status reported for May 1–31, 2025; all parameters marked "No Discharge: Y" with no actual measured values provided.
2025-06-23 · Arbor Hills Remediation Area · procedural · routine
This is a Discharge Monitoring Report (DMR) for Arbor Hills Remediation Area covering June 2025, filed by GFL Environmental on 6/23/2025. The report documents water quality monitoring parameters including flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, dissolved oxygen, and outfall observations. All monitoring locations indicate "No Discharge: Y", meaning no actual discharge occurred during the reporting period.
Key data point: No discharge occurred during June 1–30, 2025 from the treatment pond (Limit Set 001A, Final Effluent). All parameters listed for reporting only or comparison to permit limits.
2025-06-09 · Arbor Hills Landfill · evidence · notable
EGLE Air Quality Division received two odor complaints from Northville residents on the morning of June 9, 2025, and observed concurrent perimeter monitor exceedances at approximately 6:00 AM. GFL investigated and attributed the odors and alarms to a malfunctioning sump pump in Cell 6A that reduced gas extraction, which they repaired.
Key data point: Two odor complaints received June 9, 2025 at 6:49 AM and 7:52 AM; perimeter monitor alarms observed at ~6:00 AM same morning; GFL identified sump pump failure in Cell 6A as cause.
2025-06-09 · Arbor Hills Landfill · procedural · routine
Michigan EGLE Air Quality Division has issued an Extension Response Letter for the Arbor Hills Landfill (N2688). The document is a brief cover note from the Secretary of the Air Quality Division transmitting the response.
Key data point: No specific factual readings or findings provided in this cover letter; the substantive extension response is referenced as an attachment but not included in the text.
2025-06-09 · Arbor Hills Landfill · procedural · routine
EGLE's Air Quality Division approved Arbor Hills Landfill's request for a 120-day extension (to September 27, 2025) to complete corrective actions at two vertical gas collection wells (AH148BR2 and AHWW0208) due to a broader forcemain pressure and piping issue in the northwest area. The extension was granted as part of the Consent Judgment CJ No. 2020-0593-CE compliance schedule, with an updated status to be reported in the second quarter VGC Liquid Monitoring and Management Report by July 30, 2025.
Key data point: Two wells (AH148BR2, AHWW0208) granted 120-day extension to September 27, 2025 for corrective actions under CJ No. 2020-0593-CE due to forcemain pressure issues.
2025-06-09 · Arbor Hills Landfill · procedural · routine
EGLE's Air Quality Division approved a 120-day extension for Arbor Hills Landfill to complete corrective actions at two vertical gas collection wells (AH148BR2 and AHWW0208), delaying the deadline from May 30, 2025 to September 27, 2025. The extension was granted because high forcemain pressures in the northwest area require a broader piping remediation to be completed as part of a 2025 Phase 2 construction project.
Key data point: Two wells (AH148BR2 and AHWW0208) failed to meet May 30, 2025 corrective action deadline; extension granted to September 27, 2025 for forcemain-related work.
2025-06-06 · Arbor Hills Energy · procedural · routine
This is a Permit to Install issued by Michigan's Air Quality Division on June 6, 2025, authorizing Arbor Hills Energy, LLC to install and operate four gas turbines (three EGT-Typhoon combined-cycle units and one Solar simple-cycle unit) fueled by desulfurized landfill gas at the Arbor Hills facility. The permit establishes emission limits for NOx, CO, SO2, VOC, and hydrogen chloride, along with detailed monitoring, testing, and recordkeeping requirements under state and federal air quality standards.
Key data point: No measured readings provided. This is a permit-to-install document setting permitted emission ceilings and operational restrictions, not reporting actual facility performance or temperature/gas measurements.
2025-06-06 · Arbor Hills Energy · procedural · routine
EGLE Air Quality Division approved a Permit to Install (PTI No. 68-23A v2.0) on June 6, 2025, modifying permit conditions for landfill gas turbines at Arbor Hills (SRN N1504, 10611 5 Mile Road, Northville). The approval is conditional on compliance with all Part 55 air pollution control rules and requires ROP amendment/modification forms and notification to the Detroit District Office within 30 days of completion.
Key data point: PTI No. 68-23A v2.0 approved June 6, 2025 for landfill gas turbine modifications at Arbor Hills; prior PTI No. 68-23A v1.0 voided.
2025-06-04 · Arbor Hills Energy · evidence · notable
AERMOD air dispersion modeling input and output spreadsheet for Arbor Hills Energy (SRN N1504) showing stack parameters, emission rates, and air quality impact predictions for criteria pollutants (CO, NO2, PM10, PM2.5, SO2), VOCs, and PAH. The file contains multiple emission scenarios with modeled impacts compared to significance thresholds and NAAQS standards.
Key data point: Thermal Oxidizer (TOX) exit temperature modeled at 1144 K (1600°F); multiple turbine stacks modeled with exit temperatures ranging 524–1273 K (483–1832°F). PAH annual impact across all sources modeled at 0.281 µg/m³ under Scenario 1 and 0.102 µg/m³ under Scenario 2.
2025-06-04 · Arbor Hills Energy · procedural · routine
Arbor Hills Energy submitted an air dispersion modeling analysis for a permit modification involving updated short-term emission rates from landfill gas extraction. The analysis modeled criteria pollutants (NOx, CO, SO₂, PM10, PM2.5) and toxic air contaminants (PAH) using AERMOD with five years of meteorological data, evaluating two scenarios for gas routing between the on-site energy facility (AHE) and a natural gas pipeline (NGP). NO₂, PM10, and PM2.5 passed the PSD/NAAQS review; detailed results are provided in attached spreadsheets.
Key data point: No specific measured readings or violations reported in this permit application document; it is a modeling analysis submission with results referenced in attached spreadsheets not included here.
2025-05-30 · Arbor Hills Landfill · procedural · routine
GFL submitted a Schedule of Compliance response on May 30, 2025, under Consent Judgment CJ-2020-0593-CE. The submission includes an extension request document (AHL_EGLE Extension Request_250530.pdf) but the actual extension request language is not visible in the submission cover page.
Key data point: No specific factual reading or compliance deadline visible; this is a procedural submission cover sheet.
2025-05-30 · Arbor Hills Landfill · procedural · notable
Green for Life Environmental (GFL) / Arbor Hills Landfill requested a 120-day extension (from May 30 to September 27, 2025) to complete corrective actions at two vertical gas collection wells (AH148BR2 and AHWW0208) under Consent Judgment CJ No. 2020-0593-CE. The delay is attributed to widespread forcemain pressure and piping issues in the northwest area of the landfill that will be addressed as part of a 2025 Phase 2 construction project.
Key data point: Extension request for two VGC wells under Consent Judgment CJ No. 2020-0593-CE; corrective action deadline missed (May 30, 2025); high forcemain pressures in northwest landfill area; proposed completion by September 27, 2025.
2025-05-16 · procedural · routine
GFL Environmental submitted draft gas collection system (GCCS) design plans for Cell 6C at Arbor Hills Landfill to EGLE on May 14, 2025. The submission includes detailed construction site plans, perimeter header profiles, and equipment specifications (pipe sizing, manifolds, wellhead details, isolation valves, condensate sumps) for the proposed cell's landfill gas collection infrastructure. This represents an amendment to the existing GCCS plan rather than additional details to approved drawings.
Key data point: No specific factual measurements or performance data; this is a design document submission with construction drawings and equipment specifications dated 2025-05-16.
2025-05-16 · Arbor Hills Landfill · procedural · routine
A golf club employee reported experiencing shaking at Brey Burn Golf Club across from the Arbor Hills Landfill on May 16, 2025. The caller attributed the shaking to underground flare activity. MMD was designated as lead for the complaint, noting this is unusual but has occurred infrequently in the past when GFL flare pressures were suspected; an RNG plant now operates at the same location.
Key data point: No specific quantitative data or measurements provided; complaint is anecdotal. Historical note: past incidents attributed to GFL flare pressures; current cause unknown with RNG plant now present.
2025-05-13 · Emerald RNG · procedural · routine
OPAL Fuels submitted a permit modification form (M-001) on March 28, 2025, requesting that PTI No. 67-23A v2.0 for Emerald RNG LLC be incorporated into the existing ROP N2688-2011a. The modification increases the maximum allowable NOX emissions from 5.53 to 11.05 tons/year and CO emissions from 25.2 to 50.4 tons/year, effective February 28, 2025.
Key data point: NOX emissions allowable ceiling increased from 5.53 to 11.05 tons/year; CO emissions allowable ceiling increased from 25.2 to 50.4 tons/year; effective date 2/28/2025.
2025-05-12 · Arbor Hills Remediation Area · evidence · notable
This is a PFAS (per- and polyfluoroalkyl substances) monitoring report submitted by Arbor Hills Remediation Area under NPDES permit MI0045713. The report presents laboratory results from a wastewater effluent sample collected on January 29, 2025, from Outfall-001A, with flow of 0.089781 MGD and 28+ PFAS analytes measured in nanograms per liter.
Key data point: PFOA 12 ng/L, PFOS 2.8 ng/L, PFBA 30 ng/L detected in treated wastewater effluent (Outfall-001A, 01/29/2025).
2025-05-12 · Arbor Hills Remediation Area · evidence · notable
This is a laboratory analytical report for a wastewater sample (Outfall 001A) collected from GFL Environmental's Arbor Hills Landfill on January 29, 2025, and analyzed for per- and polyfluoroalkyl substances (PFAS) using EPA Method 537M. The report documents the presence of multiple PFAS compounds in the wastewater discharge, including PFBA (30 ng/L), PFPeA (10 ng/L), PFHxA (17 ng/L), PFOA (12 ng/L), and others, with quality assurance data and recovery percentages noted.
Key data point: Wastewater Outfall 001A sample collected 2025-01-29 contains detectable PFAS including PFBA 30 ng/L, PFHxA 17 ng/L, PFOA 12 ng/L, and PFOS 2.8 ng/L; one analyte (PFNA) flagged with high Continuing Calibration Verification (136% recovery, criteria 70-130%).
2025-05-12 · Arbor Hills Remediation Area · evidence · routine
This is a routine April 2025 Discharge Monitoring Report (DMR) for the Arbor Hills Remediation Area treatment pond (Permit MI0045713 v6.0), documenting daily and weekly measurements of flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFOA/PFBS, temperature, pH, and dissolved oxygen. All reported measurements fall within or below permit limits, and no exceedances are noted.
Key data point: Maximum monthly average temperature 64.4°F on 4/30/2025; all other parameters within permitted limits.
2025-05-12 · Arbor Hills Energy · procedural · routine
This is a technical air toxics screening document for a gas turbine start-up emissions source at Arbor Hills Energy in Northville, Michigan. It presents anticipated emission rates for 30+ hazardous air pollutants (formaldehyde, benzene, vinyl chloride, chromium, PAH, mercury, and others) and compares them against Michigan Rule 226 and Rule 227 screening limits and ITSL/SRSL standards. The document appears to be an engineering compliance assessment evaluating whether the proposed emissions would exceed regulatory thresholds.
Key data point: Document contains no site-specific measured readings or facility operational data—only anticipated emission rates and regulatory limit comparisons for a hypothetical or proposed gas turbine source.
2025-05-12 · Arbor Hills Energy · evidence · notable
This document presents detailed emission calculation and modeling scenarios for landfill gas extraction equipment at Arbor Hills, including turbine capacities, fuel distribution, and hourly emission rates for NOx, CO, VOC, and PM. The analysis compares current permit limits against tested emissions data and raises concerns about whether baseline emissions exceed permitted values. EGLE staff commentary notes potential non-compliance with existing NOx limits for Turbines 1 and 3.
Key data point: Current permit limit 8.8 lb/hr NOx from Turbines 1-3 equates to 0.15 lb/MMBtu; tested data and baseline emissions for Turbines #1 and #3 exceed this value and should not be creditable.
2025-05-07 · Arbor Hills Landfill · procedural · routine
Arbor Hills Landfill filed a status update with EGLE on May 7, 2025 reporting completion of gas collection infrastructure installation in Cell 6B from February through April 2025. The work was undertaken to address perimeter monitor alarms and involved installing approximately 1,000 feet of vacuum piping, forcemain, and airline across four caisson well pairs. Startup/Shutdown/Malfunction Report Forms for the affected wells (AHWW0582, AHWW0583, AHWW0585, AHWW0586) document routine gas system construction events in February and April 2025.
Key data point: Gas collection infrastructure installation completed in Cell 6B between February 12 and April 29, 2025, connecting caisson wells AHWW0579 through AHWW0586 to address perimeter monitor alarms.
2025-05-06 · Arbor Hills Energy · procedural · routine
EGLE's evaluation document for PTI 68-23A v2.0 modifies the air permit for Arbor Hills Energy's landfill gas turbines to allow simultaneous operation with the Renewable Natural Gas Plant and consolidate diesel fuel limits. The facility is an existing major source subject to PSD review; modeling demonstrates compliance with NAAQS and PSD increments for NO₂, PM₁₀, and PM₂.₅, and all toxic air contaminants remain below 77% of health-based screening levels.
Key data point: NO₂ 1-hour combined impact 140.89 µg/m³ (74.94% of NAAQS limit of 188 µg/m³) under operating scenario 1; PM₂.₅ 24-hour 25.15 µg/m³ (71.86% of NAAQS 35 µg/m³).
2025-04-30 · Arbor Hills Landfill · evidence · routine
This is the Q1 2025 Consent Judgment compliance report filed by Arbor Hills Landfill, Inc. (AHL) to the Michigan Department of Environment, Great Lakes, and Energy (EGLE). It includes detailed vertical gas collection (VGC) well liquid level and gas monitoring data, along with well maintenance actions and recommendations for replacements or further evaluation across both the AH East and AH West landfill sections.
Key data point: Multiple wells require corrective action including replacements and pump maintenance; notable examples include well obstructions, submerged screens, and stuck pumps across both landfill sections documented in Q1 2025.
2025-04-28 · Arbor Hills Landfill · procedural · routine
GFL Environmental responded to an April 21, 2025 odor complaint filed by a Northville resident, claiming that perimeter monitors recorded no exceedances and that evening odor monitoring detected nothing at the complaint address. The company attributed some observed light odor to Bradford pear tree blooms and stated that the neutralizer misting system was activated in response.
Key data point: Perimeter Emission Monitors along the East edge recorded no exceedances on April 21 and April 19, 2025; light compost odor was noted near 6 Mile Road and Napier Road but no odor detected in subdivisions.
2025-04-17 · Arbor Hills Remediation Area · evidence · routine
This is a monthly Discharge Monitoring Report (DMR) for March 2025 from the Arbor Hills Remediation Area (Permit MI0045713 v6.0), documenting daily and averaged measurements of treatment pond discharge across multiple water-quality parameters including flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, thermal discharge, temperature, pH, and dissolved oxygen. All reported measurements appear to fall within permitted limits or are reported as required; no exceedances are documented.
Key data point: Final effluent temperature reached a maximum of 58.4°F on 3/19/2025 (receiving water 57.9°F); all other parameters within permit bounds or flagged as equipment error (*E) or no flow (*F).
2025-04-16 · Arbor Hills Landfill · evidence · notable
GFL responds to EGLE regarding multiple odor complaints and perimeter monitor methane exceedances (>40 ppm at MS-2, MS-3, MS-7) by explaining delays in installing vacuum lines to newly installed caisson wells in Cell 6B and requesting a 120-day extension. The company reports conducting odor investigations that detected only faint odors or mitigation system scent, and notes a frozen airline component was replaced on a southside sump.
Key data point: Perimeter monitors MS-2, MS-3, MS-7 experienced intermittent methane alarms greater than 40 ppm; approximately 90 odor complaints received since beginning of January 2025; 120-day extension requested for vacuum line installation to Cell 6B caisson wells.
2025-04-10 · Arbor Hills Landfill · evidence · notable
Arbor Hills Landfill submitted its First Quarter 2025 Perimeter Monitor Root Cause Analysis Investigation Report to EGLE, documenting methane and hydrogen sulfide alarm events at multiple perimeter monitors (MS-2, MS-3, MS-4, MS-5, MS-6) during January and February 2025, with detailed root cause investigations and corrective actions performed in accordance with Consent Judgment No. 2020-0593-CE.
Key data point: Multiple methane (CH4) action level alarms (40 ppm threshold) triggered at perimeter monitors MS-2, MS-3, MS-4, MS-5, MS-6 between January 8–February 11, 2025; root cause analyses found no issues with landfill gas control system, leachate collection system, or cap/cover material.
2025-04-09 · Emerald RNG · procedural · routine
Michigan EGLE issued a Permit to Install (PTI 67-23A v2.0) on February 28, 2025, to Emerald RNG LLC for a renewable natural gas (RNG) plant and associated air emission control equipment at 10719 Five Mile Road, Northville, Michigan. The facility processes up to 10,000 scfm of landfill gas through a sulfur treatment system, RNG refining plant, thermal oxidizer, and open flare, with specified emission limits for NOx and CO.
Key data point: Thermal oxidizer minimum combustion temperature 1,450°F; NOx limit 0.06 lb/MMBtu hourly and 11.1 tpy; CO limit 0.20 lb/MMBtu hourly and 37.0 tpy; open flare rated 3,720 scfm capacity for backup control during process interruptions and thermal oxidizer outages.
2025-04-09 · Emerald RNG · procedural · routine
Emerald RNG LLC filed a Rule 215 Notification of Change on April 9, 2025, for an increase in MMBtu/year capacity for the Off-Spec Flare at its facility on Five Mile Road in Northville, Michigan. The change is associated with a Permit to Install (PTI 67-23A v2.0) effective February 28, 2025, and is classified as a Rule 215(3) off-permit change.
Key data point: Off-Spec Flare MMBtu/year increase; PTI 67-23A v2.0 effective 2/28/2025; effective date of change 04/07/2025. No specific numeric emissions values stated in the notification itself.
2025-04-09 · Emerald RNG · procedural · routine
OPAL Fuels is submitting a Modification Form M-001 to update the air quality permit for Emerald RNG LLC (SRN P1488), a renewable natural gas facility at Arbor Hills Landfill. The company requests that PTI No. 67-23A v2.0 be incorporated as a new section into the existing ROP N2688-2011a.
Key data point: No specific factual readings or measurements provided; this is a permit modification filing notice with no quantitative data.
2025-03-14 · Arbor Hills Remediation Area · evidence · routine
This is a routine Discharge Monitoring Report (DMR) for Arbor Hills Remediation Area covering February 1–28, 2025. The report certifies daily measurements of treatment pond effluent (Final Effluent 1) including flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, and dissolved oxygen. All reported measurements appear within permitted limits; many days are marked *E (equipment malfunction/no data) or *F (facility shutdown).
Key data point: No permit violations reported. Temperature readings ranged from 37.2F to 40.6F, all well below the permitted maximum. Most parameters either not sampled (*E) or below detection limits.
2025-03-11 · Arbor Hills Landfill · evidence · notable
Arbor Hills Landfill filed its annual compliance certification and semi-annual deviation reports for the period July 1 – December 31, 2024, under its Renewable Operating Permit (MI-ROP-N2688-2011). The facility reported multiple monitoring deviations including one well with temperature exceedances, 421 instances of wellhead pressure standard exceedance (all corrected within 15 days), seven methane readings exceeding 500 ppm in Q3 and Q4 (all corrected), and four instances of missing flare monitoring data. All reported deviations were corrected within required timeframes.
Key data point: One well exceeded the regulatory temperature limit during H2 2024; wellhead temperature returned to compliant standard same day. Wellhead pressure standard exceeded 421 times; all corrected within 15 days.
2025-03-11 · Arbor Hills Landfill · evidence · routine
Arbor Hills Landfill submits its 2024 second semi-annual Consent Judgment report (CJ No. 2020-0593-CE) covering July–December 2024, including gas well surface exceedance management, H2S records, perimeter monitoring root cause analyses, and corrective actions. The 255-page filing attaches nine regulatory sections detailing gas collection system performance, erosion remediation, and monitoring procedures.
Key data point: No specific measured temperature readings above 145F or CO spikes documented in the pages provided. Document references WOI well 272R4 with poor methane quality (33.8%) in Q4 2024, but no elevated-temperature data points are stated in the excerpted pages.
2025-03-10 · Arbor Hills Landfill · evidence · notable
This is the second semi-annual 2024 NESHAP compliance report for Arbor Hills Landfill, covering July 1 through December 31, 2024. The operator reports compliance with all Landfill NESHAP operational standards, including the 145°F wellhead temperature standard, and no exceedances lasting more than 60 days that would require root cause analysis. Surface emissions monitoring found 14 locations (7 each in Q3 and Q4) exceeding the 500-ppm methane regulatory standard, all of which were corrected through follow-up monitoring.
Key data point: Measured wellhead temperatures up to 130.4°F (AHW71AR, Aug 26, 2024) and 128.4°F (AHW71AR, Aug 26, 2024), both within the 145°F NESHAP standard but indicating elevated subsurface conditions; 14 surface methane exceedances over 500 ppm in Q3 and Q4 2024.
2025-03-10 · Arbor Hills Landfill · procedural · routine
GFL Environmental submitted the 2024 second semi-annual NESHAP compliance report for Arbor Hills Landfill (N2688) under 40 CFR 63 Subpart AAAA for Municipal Solid Waste Landfills. The submission was filed on March 10, 2025, and signed by Anthony Testa. The supporting documentation (GFL Semi-Annual NESHAP report covering July 1 – December 31, 2024) was uploaded but not detailed in this form.
Key data point: No specific factual readings or violations stated in this form; it is a procedural filing of a semi-annual compliance report.
2025-03-06 · Arbor Hills Energy · evidence · notable
EGLE issued a fourth Violation Notice to Arbor Hills Energy for failure to conduct required stack testing of three European Gas Turbines in compliance with federal Subpart GG standards. Despite previous violation notices in January, May, and October 2024, and a revised test protocol submitted in January 2025, AHE was unable to start and operate the turbines on the scheduled test date of February 18, 2025, leaving the violation ongoing and continuing.
Key data point: VN #4 filed March 6, 2025, for continued failure to conduct required Subpart GG stack testing for NOx on three EGTs; testing was scheduled for February 18, 2025, but turbines could not be started and operated.
2025-03-06 · Arbor Hills Energy · evidence · notable
EGLE's Air Quality Division issued a Violation Notice to Arbor Hills Energy (AHE) on March 6, 2025, for failure to conduct required nitrogen oxides (NOx) stack testing on three European Gas Turbines during the October 2023 5-year performance test window, despite multiple prior notices in January, May, and October 2024. AHE attempted to retest in February 2025 but was unable to start and operate the turbines, leaving the violation ongoing and continuing. The company must submit a written response by March 30, 2025, with a specific proposed test date and confirmation of compliance with NSPS Subpart GG requirements.
Key data point: Ongoing violation: failure to conduct required NOx stack testing on three European Gas Turbines per NSPS 40 CFR Part 60 Subpart GG; retest attempted February 18, 2025, but turbines could not be started; violation notices issued January 18, May 10, and October 18, 2024.
2025-03-06 · Arbor Hills Landfill · procedural · routine
EGLE's Air Quality Division has approved an Extension Request for Arbor Hills Landfill (N2688) under Consent Judgment CJ-2020-0593-CE. The document is a brief transmittal from the state agency confirming the approval; the substantive extension request details are referenced as an attachment.
Key data point: Extension Request Approval issued for N2688 under CJ No. 2020-0593-CE, March 6, 2025—no specific operational or temperature data provided in this notice.
2025-03-06 · Arbor Hills Landfill · procedural · routine
EGLE's Air Quality Division approved a corrective-action extension for 29 vertical gas-collection wells at Arbor Hills Landfill under Consent Judgment CJ No. 2020-0593-CE. The operator requested additional time (until April 30 and June 27, 2025) to complete pump evaluations, removals, well replacements, and piping work, citing weather, safety, and operational constraints.
Key data point: 29 wells requiring corrective actions under CJ No. 2020-0593-CE; operator granted extension to April 30, 2025 (25 wells) and June 27, 2025 (4 wells) for pump/piping work.
2025-03-05 · Arbor Hills Landfill · procedural · routine
Federal consent decree filed December 2021 in U.S. District Court (Eastern District of Michigan) between the United States and Michigan EGLE against Arbor Hills Energy LLC, establishing compliance monitoring and reporting obligations. The decree requires semi-annual reports on construction, compliance measures, monitoring results, and mandates 30-day notification to DOJ, EPA, and EGLE of any violations or exceedances of emissions limits.
Key data point: No specific factual readings or measured data in the shown pages. Document is the legal framework (Consent Decree CJ No. 5:21-cv-12098-SDD-EAS) governing future compliance reporting and violation notification.
2025-03-05 · Arbor Hills Landfill · procedural · notable
Green for Life Environmental (GFL) requests a Consent Judgment extension from the Michigan Department of Environment, Great Lakes, and Energy (EGLE) to delay corrective actions at 27 vertical gas collection wells at Arbor Hills Landfill. The company cites harsh winter weather in January and February 2025 that prevented completion of required repairs and evaluations by the original February 27, 2025 deadline, and proposes new deadlines of April 30, 2025 for most wells and June 27, 2025 for four wells requiring contractor work.
Key data point: 27 corrective action items at vertical gas collection wells overdue as of February 27, 2025, under Consent Judgment CJ No. 2020-0593-CE; GFL requests extensions to April 30–June 27, 2025.
2025-03-04 · Arbor Hills Landfill · procedural · routine
This is a 2024 Supplemental Environmental Projects (SEP) Annual Report filed under Consent Judgment No. 2020-0593-CE, detailing Arbor Hills Landfill's compliance spending on perimeter emissions monitoring ($267,594.81 in 2024; $740,250.17 to date), a Household Hazardous Waste facility ($261,000 in 2024; $700,000+ to date), and vegetative buffer planting ($19,000 in 2024; $151,975.80 to date). The report certifies completion of all SEP obligations and includes supporting expenditure documentation and leachate disposal records.
Key data point: Perimeter emissions monitoring system at six Scentroid CTair locations (north of Six Mile Road to southeast perimeter) operational since 2022, monitoring H2S and methane; 2024 operating cost $267,594.81.