Every document the monitor has read for these facilities, newest first. The list runs back to the earliest record on file and updates automatically as new documents come in. Most are EGLE filings; hand-curated public records from other sources are labeled with their source.
2026-10-09 · Arbor Hills Energy · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a draft Renewable Operating Permit (ROP) and Permit to Install (PTI) from EGLE's Air Quality Division covering the Arbor Hills Landfill gas treatment, flaring, and turbine systems. It lays out emission limits, monitoring, recordkeeping, and testing requirements, including a 20 ppmv total reduced sulfur (H2S) limit for the FGPROJECT23 gas treatment system and MACT Subpart YYYY requirements for the combustion turbines.
Key data point: Permitted TRS/H2S limit of 20 ppmv (hourly) for landfill gas burned in FGPROJECT23 (permitted limit, not a measured reading).
2026-10-09 · Arbor Hills Energy · procedural · notable
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a Michigan EGLE Air Quality Division Renewable Operating Permit (ROP) staff report and addendum for Arbor Hills Energy, LLC (N1504), the landfill-gas-to-energy/RNG facility co-located with the Arbor Hills Landfill. It explains the Title V permit renewal process, lists facility emissions and applicable federal/state air rules, and summarizes the facility's enforcement history (16 violation notices since 2014, a 2021 federal Consent Decree, and a 2022 state Consent Judgment) along with AQD's responses to public comments, including confirmation that a 2025 violation (VN-017118) was resolved through permit revision and successful stack testing.
Key data point: 16 Violation Notices issued against the Arbor Hills Energy/Landfill site from Dec. 2014 through April 2025; most recent VN-017118 (March 6, 2025) was resolved when AQD determined on Nov. 13, 2025 that Aug. 2025 stack testing demonstrated compliance.
2026-10-09 · Arbor Hills Landfill · reference · Source: Arbor Hills Monitor, compiled from operator filings to EGLE
2026-10-08 · Arbor Hills Landfill · evidence · urgent
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a routine/quarterly Wells of Interest (WOI) gas monitoring dataset for Arbor Hills Landfill, covering dozens of landfill gas extraction wells with temperature, CH4, CO2, O2, differential pressure, flow, and well/header pressure readings taken roughly monthly in 2021-2022. Supplemental attachments show Drager-tube CO and hydrogen readings and WOI designation notes explaining that wells exceeding 131°F become 'Wells of Interest' subject to the May 2019 HOV (Higher Operating Value) approval. Numerous wells (e.g., AHWW0279, AHWW0290, AHW259R4, AHWW311R, AHWW312R, AHWW285R) show repeated 'temperature HOV' flags with readings well above 131°F, with the single highest measured temperature reaching 169.5°F at well AHWW312R.
Key data point: Well AHWW312R measured 169.5°F on 3/2/2022 (also 168.6-169.1°F on other 2022 dates), among the highest readings in this WOI report and far above the 131°F threshold that triggers HOV 'Well of Interest' status under the May 6, 2019 HOV approval letter.
2026-10-08 · Arbor Hills Energy · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This EGLE letter notifies Arbor Hills Energy that no changes were made to its draft Renewable Operating Permit (ROP) renewal after the public comment period, and that the mandatory 45-day USEPA review period has begun. The letter is purely administrative, confirming procedural progress toward permit renewal.
Key data point: 45-day USEPA review period for ROP renewal runs October 9, 2026 to November 23, 2026 (SRN N1504)
2026-10-07 · Arbor Hills Landfill · evidence · urgent
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is GFL/Arbor Hills Landfill's semi-annual Wells of Interest (WOI) Higher Operating Value (HOV) Status Report to EGLE covering April-June 2024, part of ongoing compliance monitoring for landfill gas wells with elevated temperatures. The report documents continued HOV waiver extensions (approved through May 2026), well replacements, and includes hundreds of pages of raw gas/temperature/liquid-level monitoring data showing multiple wells with recorded temperatures well above the 145°F MACT threshold, including readings as high as 154.4°F (AHWW0279, 5/31/2024). It also reports plant-level gas quality (45-52% methane, 1.0-1.5% oxygen) and monthly carbon monoxide readings at individual WOI wells.
Key data point: Highest wellhead temperature in the April-June 2024 Wells of Interest data (Attachment 1 of GFL's semi-annual HOV Status Report to EGLE): 154.4°F at well AHWW0279 on 5/31/2024, above the 145°F MACT operating value. (Corrected 2026-10-08: an earlier automated version misread a liquid-level depth of 202 ft as a 202°F temperature at AHWW301R; AHWW301R's highest reading in this period was 123.9°F.)
2026-10-07 · Arbor Hills Landfill · evidence · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is Arbor Hills Landfill's Q1 2024 Consent Judgment compliance report package (CJ No. 2020-0593-CE), covering the Vertical Gas Collection (VGC) well liquid monitoring report, well tuning and gas monitoring activities, and corrective-action tracking for the gas collection and control system. It details liquid levels, sounded depths, and percent-of-screen-submerged data for dozens of individual gas extraction wells in both the Arbor Hills East and West landfill areas, along with notes on pump maintenance, obstructions, and recommended well replacements. The report also certifies compliance with CJ reporting requirements and notes a delayed January Sniffer Drone flight due to weather.
Key data point: Well AHW207R2 showed 6% screen submerged in Q1 2024 (down from 23% in 2023Q2); well replacement actions are generally required within 120 days of report issuance per CJ No. 2020-0593-CE Section 5.3(A).
2026-10-07 · Arbor Hills Landfill · evidence · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This EGLE submission reports results of a September 1, 2026 gas sampling event at the Arbor Hills Landfill's enclosed flare system (FGENCLOSEDFLARES-S2), testing for total reduced sulfur (TRS, measured as SO2) and hydrochloric acid (HCl). Average concentrations and calculated emission rates for both pollutants were well below the facility's permitted emission limits. The report also includes continuous flare temperature and gas flow data for the test day.
Key data point: Average TRS (as SO2) = 6.25 ppm / 0.068 lb/hr (vs. 2.5 lb/hr permit limit); average HCl = 3.98 ppm / 0.024 lb/hr (vs. 6.0 lb/hr permit limit) — Sept 1, 2026 sampling at FGENCLOSEDFLARES-S2.
2026-10-07 · Arbor Hills Landfill · evidence · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a stack test compliance report for the enclosed flares (FGENCLOSEDFLARES-S2) at the landfill, measuring sulfur dioxide and hydrochloric acid emissions against federal MSW landfill NESHAP limits. Three test runs for each pollutant show emissions far below their permitted hourly limits.
Key data point: SO2 three-run average 0.068 lb/hr vs. permitted limit of 2.5 lb/hr at FGENCLOSEDFLARES-S2 (40 CFR 63 Subpart AAAA)
2026-10-07 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a MiEnviro Portal submission by GFL/Arbor Hills Landfill re-filing a stack test report (with a revised test report attachment) covering HCl and Sulfur sampling at the facility's enclosed flares, in response to a state correction request. It documents procedural test details (dates, contacts, approved test plan) but does not include the actual numeric test results in the submitted text.
Key data point: No specific numeric emissions reading is stated in this submission text; it references an attached 'September 2026 Enclosed Flare TO-15 Report Rev.1.pdf' as the source of actual HCl/Sulfur results.
2026-10-07 · regulation · Source: Cornell Legal Information Institute (LII) copy of the Michigan rule; the official text is the Michigan Administrative Code
2026-10-05 · Arbor Hills Landfill · reference · Source: U.S. EPA Envirofacts (enviro.epa.gov)
2026-10-05 · Arbor Hills Landfill · reference · Source: U.S. EPA Envirofacts (enviro.epa.gov)
2026-10-05 · Arbor Hills Landfill · reference · Source: U.S. EPA Envirofacts (enviro.epa.gov)
2026-10-05 · Arbor Hills Energy · reference · Source: U.S. EPA Envirofacts (enviro.epa.gov)
2026-10-05 · Arbor Hills Landfill · reference · Source: U.S. EPA Envirofacts (enviro.epa.gov)
2026-10-05 · Arbor Hills Energy · reference · Source: U.S. EPA Envirofacts (enviro.epa.gov)
2026-10-05 · Arbor Hills Landfill · reference · Source: U.S. EPA Envirofacts (enviro.epa.gov)
2026-10-01 · Arbor Hills Energy · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
An OPAL Fuels compliance manager emails EGLE to update the permit mailing address for Arbor Hills Energy LLC and Emerald RNG LLC from a Lockport, NY address to a new White Plains, NY address. No other substantive information is changing.
Key data point: Administrative mailing address change only; no factual or compliance data provided.
2026-10-01 · Emerald RNG · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
OPAL Fuels notified EGLE of an administrative change to the permit mailing address for Arbor Hills Energy LLC and Emerald RNG LLC, moving from a Lockport, NY address to a White Plains, NY address. No other permit information is changing and the email simply asks EGLE for next steps.
Key data point: No specific factual/measurement claim; this is an administrative address-change notification only.
2026-09-30 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a procedural MiEnviro submission for an HCl and sulfur sampling stack test conducted at Arbor Hills Landfill's enclosed flares in September 2026. EGLE reviewer Jeremy Howe issued a correction request, noting the report must be resubmitted as a stack test with the results table completed per the approval letter. No test results or numeric readings are included in this filing itself.
Key data point: No specific numeric readings in this filing; it is a correction request requiring resubmission of the HCl/Sulfur enclosed-flare stack test report per approval letter 05ER-EP56-RT7D.
2026-09-30 · Salem Landfill (closed), Part 201 site 81000033 · evidence · Source: Washtenaw County GIS (MapWashtenaw)
2026-09-28 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
EGLE's Air Quality Division notified the testing contractor (Impact C&T) that a due date for the Arbor Hills Landfill flare emissions test report correction will be pushed back while EGLE consults internally. The underlying dispute concerns whether NOx emission rates from multiple enclosed flares should be summed as unit-based rates (lb/MMBtu), which the contractor argues is scientifically incorrect since such rates are not additive. The permitted NOx limit for the enclosed flares (FGENCLOSEDFLARES-S2) is cited as 0.060 lb/MMBtu.
Key data point: Permitted NOx emission rate for FGENCLOSEDFLARES-S2 is 0.060 lb/MMBtu; EGLE is delaying the due date for a requested test-report correction (submission HQR-1YG2-3TC95).
2026-09-25 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is an administrative cover form for a compliance air quality test report submitted to EGLE, documenting an HCl and Sulfur sampling test conducted at Arbor Hills Landfill's enclosed flares on September 1, 2026. The actual test data is contained in a separately attached PDF report, not reproduced in this submission form.
Key data point: No specific readings stated; this is a submittal cover form for an HCl/Sulfur enclosed-flare TO-15 test conducted 9/1/2026.
2026-09-25 · Arbor Hills Landfill · evidence · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a cover letter from EIL to EGLE reporting that total reduced sulfur (TRS) and hydrogen chloride (HCl) gas sampling was conducted at Arbor Hills Landfill's enclosed flare system (FGENCLOSEDFLARES-S2) on September 1, 2026. The letter describes the sampling methodology and references an attached laboratory analysis report, but the actual analytical results are not included in the provided text.
Key data point: No specific numeric readings are stated in this cover letter; TRS/HCl sampling was conducted 2026-09-01 at FGENCLOSEDFLARES-S2, with results in an unincluded lab attachment.
2026-09-21 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a routine air quality stack test report submittal from Arbor Hills Landfill covering a stack test performed on 7/29/2026, submitted via MiEnviro Portal. State reviewer Amanda Battershell issued a correction request noting the facility incorrectly averaged NOx run results by dividing by 6 instead of summing two values (0.025 + 0.030 lb/mmbtu). The submission includes contact info, test plan references, and a certification signed by facility representative Anthony Testa.
Key data point: EGLE correction request: NOx flexible-group average miscalculated; should be 0.025 + 0.030 lb/mmbtu (not divided by 6), Sept 2026
2026-09-21 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a MiEnviro Portal submission of a stack test compliance report for Arbor Hills Landfill covering a July 29, 2026 test event. The submission includes two correction requests from AQD staff regarding the test methods used (25A/ALT-097) and the way flexible-group NOx averages were calculated across multiple runs.
Key data point: AQD correction request: NOx average should be 0.025 + 0.030 lb/mmbtu (not divided by 6 runs), stack test dated 07/29/2026
2026-09-18 · Arbor Hills Landfill · evidence · routine · EGLE title: nForm Document
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
GFL's Arbor Hills Landfill submitted a status update letter to EGLE on corrective actions for two vertical gas collection wells, AHWW270R and AHWW277R, which had been granted an extension. The letter reports that replacement wells AHW270R2 and AHW277R2 were drilled, installed, and successfully activated on August 20, 2026, ahead of the extended deadline. An updated status will be included in the next VGC Liquid Monitoring and Management Report.
Key data point: Replacement wells AHW270R2 and AHW277R2 (for AHWW270R and AHWW277R) were activated and brought online on 8/20/2026, ahead of the extended 9/26/2026 corrective action deadline.
2026-09-18 · Arbor Hills Landfill · procedural · Source: Ypsilanti Community Utilities Authority (YCUA)
2026-09-18 · Arbor Hills Landfill · evidence · Source: Ypsilanti Community Utilities Authority (YCUA)
2026-09-15 · Arbor Hills Landfill (Land & Water Interface) · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a Resources Individual Permit document dated 2026-09-15 concerning Arbor Hills Landfill and the Emerald RNG facility. The document appears to be a large permit file (1087 pages) with multiple attachments related to wetland monitoring (permit WRP033733), though the provided excerpts are heavily corrupted and largely unreadable.
Key data point: Document provides no legible specific factual readings due to extensive file corruption throughout the sampled pages.
2026-09-15 · Arbor Hills Remediation Area · evidence · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a Discharge Monitoring Report (DMR) for August 2026 covering the Arbor Hills Remediation Area treatment pond (Permit MI0045713 v6.0). The report shows that the treatment pond had "No Discharge" status for the entire month, meaning no water flowed to the monitoring location during the reporting period. All monitoring parameters (TSS, CBOD5, ammonia nitrogen, phosphorus, cyanide, mercury, PFAS compounds, temperature, pH, and dissolved oxygen) were marked as "Report" or left blank, indicating no samples were collected or analyzed due to the no-discharge condition.
Key data point: No discharge from treatment pond throughout August 2026; all water-quality parameters unsampled.
2026-09-11 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a cover email from EGLE's Air Quality Division transmitting a request for extension regarding corrective actions at vertical gas collection wells at Arbor Hills Landfill under Consent Judgment CJ-2020-0593-CE. The document itself is not included in the excerpt provided, only the transmittal notice.
Key data point: No specific factual readings or measurements are stated in this transmittal; the actual request document is referenced but not included in the text provided.
2026-09-11 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
EGLE Air Quality Division approves a 90-day extension (to November 26, 2026) for Arbor Hills Landfill to complete corrective actions at three vertical gas collection wells (AHW200R3, AHW229R3, AHW230R4) involving installation of new airline piping, originally due August 28, 2026. The extension was requested on August 28, 2026, and the work will proceed as part of ongoing gas system construction.
Key data point: Three wells (AHW200R3, AHW229R3, AHW230R4) requiring corrective action for airline installation; original deadline August 28, 2026 extended to November 26, 2026 per Consent Judgment CJ No. 2020-0593-CE.
2026-09-11 · Arbor Hills Energy · evidence · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
EGLE conducted an Air Quality Test Observation on September 9, 2026, to monitor sulfur dioxide (SO2) compliance testing of landfill gas at Arbor Hills Energy's turbine plant. The facility, operated as a DTE peaker, experienced a power outage that delayed the start of EGT3 sampling until 2:53 PM, requiring DTE approval to proceed. The test collected LFG canister samples to verify compliance with SO2 emission limits of 0.5 lb/hr for the EGT and 0.41 lb/hr and 0.15 lb/MMBtu for Turbine 4.
Key data point: EGT3 sampling event initiated at 14:53 (2:53 PM) on September 9, 2026, after DTE power authorization; no visible emissions or flame observed from Emerald RNG flare or GFL flares on arrival.
2026-09-10 · Arbor Hills Landfill · evidence · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
EGLE-AQD 2026 Surface and Penetration Emissions Monitoring (SEM) report documenting methane exceedances detected on June 16, 2026 at Arbor Hills Landfill. Seventy-five locations initially exceeded 500 ppm CH4 above background; all were resolved through corrective action (cover maintenance, clay/bentonite application, gas well tuning) with 10-day and 30-day remonitoring confirming compliance by July 23, 2026.
Key data point: 75 initial methane exceedances >500 ppm above background (6/16/2026); highest single reading 148,682 ppm at penetration probe ID 60 (42.40411, -83.55647); all 75 locations passed final 30-day recheck <500 ppm by 7/23/2026.
2026-09-10 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
Arbor Hills Landfill has submitted an Air General Compliance Report to EGLE-AQD on 2026-09-10, identified as a Corrective Action SEM (Supplemental Environmental Project) Report following a June 2026 EGLE inspection. The submission includes an attached SEM report detailing corrective actions required by the inspection.
Key data point: No specific quantitative data provided in the submission form itself; compliance report references a June 2026 EGLE-AQD inspection but detailed findings are in the attached PDF not extracted here.
2026-09-10 · Arbor Hills Landfill · procedural · notable
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
GFL responds to EGLE follow-up questions about two wells (AHW310R2 and AHWW283R) referenced in the Q2 2026 Consent Judgment quarterly report. AHW310R2 was found to have an off-center caisson blocking pump installation; AHWW283R lacks air at the airline riser preventing pump testing. Both issues have been added to corrective-action lists for future reporting.
Key data point: AHW310R2: caisson off-center found May 27, 2026, pump installation evaluation due date May 30, 2026 missed; AHWW283R: no air at airline riser found June 10, 2026, evaluation due date August 28, 2026 missed.
2026-09-09 · Arbor Hills Landfill · procedural · Source: Washtenaw County Materials Management Planning Committee (public meeting portal), Sept. 9, 2026; presentation prepared by Resource Recycling Systems
2026-09-02 · Arbor Hills Remediation Area · procedural · Source: EGLE MiEnviro (nSITE Submissions profile), Arbor Hills Remediation Area (SRN RA); application reference HQR-92CD-VZT39
Arbor Hills Remediation Area — new EGLE filing: Notice of Intent for coverage under the NPDES industrial-stormwater general permit (reissuance), received Sept. 2, 2026 (application in process)
2026-08-27 · Arbor Hills Remediation Area · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
GFL's Arbor Hills Landfill responded to an EGLE Air Quality inspection observation of discolored water in stormwater ditches (June 2026). The company attributed the appearance to compost tannins rather than landfill leachate, implemented corrective regrading and soil additions, and committed to enhanced erosion-control practices including berms, check dams, blankets, and retention ponds.
Key data point: Four locations observed in north perimeter stormwater ditch during June 2026 Air Quality inspection; GFL attributed discoloration to finished compost runoff following heavy rain, not leachate breakout.
2026-08-27 · Arbor Hills Remediation Area · procedural · notable
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
EGLE inspector Matt Konieczki raised concerns about potential leachate breakouts observed during a June 2026 air quality inspection at Arbor Hills. GFL responded that the dark-colored water was discolored stormwater runoff picking up finished compost from recently seeded slopes, not actual leachate, and committed to erosion control measures (mulch, erosion blankets) to prevent similar appearances in the future.
Key data point: Four locations along north perimeter stormwater ditch observed during June 16, 2026 Air Quality inspection; GFL attributed to compost-stained stormwater runoff rather than leachate breakout.
2026-08-27 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
EGLE's Air Quality Division is submitting a request for extension regarding perimeter monitor action level exceedances at the Arbor Hills Landfill (SRN N2688). The document is a cover letter transmitting a detailed attachment about air quality monitoring violations.
Key data point: No specific factual readings provided in cover letter; detailed measurements are in the referenced attachment which is not included here.
2026-08-26 · Arbor Hills Landfill (Land & Water Interface) · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
GFL-Arbor Hills Landfill has submitted a joint state-federal wetland permit application (HQK-4R25-67T36) to dredge 26,876 cubic yards and place 76,193 cubic yards of fill in 3.78 acres of wetland, citing PFAS source-area elimination and downstream water-quality improvement. The project includes 6.49 acres of compensatory mitigation in Salem Township within the Rouge River watershed and is subject to a 20-day public comment period ending approximately mid-September 2026.
Key data point: 3.78 acres of wetland proposed for dredge/fill due to PFAS contamination; project in Salem Township, Washtenaw County; EGLE processing deadline November 19, 2026.
2026-08-26 · Arbor Hills Landfill (Land & Water Interface) · procedural · notable
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
GFL filed a Joint Permit Application (JPA) with EGLE/USACE on August 26, 2026, proposing to dredge and fill 3.78 acres of wetland at Arbor Hills Landfill to eliminate PFAS source areas and improve downstream water quality, with compensatory mitigation of 6.49 acres. The public notice opened a 20-day comment period (August 26 – September 15, 2026) under Part 303 Wetlands Protection.
Key data point: 26,876 cubic yards dredged, 76,193 cubic yards fill, 3.78 acres wetland impact, 6.49 acres compensatory mitigation, proposed to eliminate PFAS source area.
2026-08-26 · Arbor Hills Landfill · procedural · notable
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
EGLE approves a 120-day extension (until December 19, 2026) for Arbor Hills Landfill to complete corrective actions addressing perimeter methane monitor exceedances in August 2026. The facility reported frequent readings exceeding 40 ppm and attributed the issue to reduced vacuum pressure in Cells 6A and 6B, requiring a system upgrade that cannot be completed within the standard 48-hour compliance window.
Key data point: Perimeter methane monitors recorded frequent readings exceeding 40 ppm in August 2026, with some EGLE surface emission monitoring locations at greater than 500 ppm.
2026-08-26 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
GFL Arbor Hills submitted a Q3 2026 Leachate Minimization Action Plan in response to an Air Enforcement Schedule of Compliance requirement under Consent Judgment CJ-2020-0593-CE. The submission is a certified compliance filing with no quantitative data or violations stated in the cover document.
Key data point: No specific factual reading provided in the submission cover document; detailed action plan is in the attached PDF not provided for review.
2026-08-26 · Arbor Hills Landfill · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
Arbor Hills Landfill submitted a Consent Judgment-mandated action plan on August 26, 2026, addressing leachate minimization based on a third-party (Tetra Tech) inspection conducted July 14, 2026. The plan details seven recommended improvements to stormwater control, grading, and cover systems, along with completed maintenance work from the prior quarter. Tetra Tech's inspection found cover systems generally in good condition and adequate to divert stormwater, but identified two small ponding areas and recommended targeted remedial actions for fall 2026 and beyond.
Key data point: Q3 2026 topographic survey and inspection (July 8 and 14, 2026) found stormwater diversion systems functioning as designed; two small ponding areas identified; final cover replacement over Cell 2 scheduled for end of August 2026.
2026-08-25 · Arbor Hills Landfill (Land & Water Interface) · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
Arbor Hills Landfill (AHLF) seeks a Joint Permit Application to excavate and fill approximately 3.78 acres of contaminated wetland (Wetland 1) to permanently eliminate a PFAS source resulting from a 2016 fire at an adjacent recycling facility. The project addresses Violation Notice VN-011821 and proposes 6.49 acres of compensatory mitigation wetland creation at a nearby site within the Johnson Drain corridor.
Key data point: PFAS contamination confirmed in Wetland 1 surface water and sediments (May 2026); groundwater seep from Wetland 1 into Pond 3 below railroad tracks identified as active contaminant pathway to Outfall 001.
2026-08-24 · Emerald RNG · procedural · routine
Automated summary of the linked document above. This summary and any key data point below are machine-generated and may contain errors. Consult the source document before relying on them.
This is a Renewable Operating Permit (ROP0000236 v3.0) issued by Michigan EGLE to Emerald RNG LLC for the Arbor Hills Landfill facility (SRN P1488) located at 10719 West 5 Mile Road, Northville, Washtenaw County. The permit establishes operating conditions, emission limits, monitoring, and recordkeeping requirements for the landfill gas energy recovery and treatment systems, including the thermal oxidizer (EURNGTOX) and RNG plant equipment.
Key data point: Thermal oxidizer must maintain minimum 1,450°F destruction temperature; NOx limit 0.06 lb/MMBTU hourly and 11.1 tpy annually; CO limit 0.20 lb/MMBTU hourly and 37.0 tpy annually; H2S/TRS monitoring required weekly when turbines operate, semi-annually by EPA method, with 20 ppmv threshold triggering increased monitoring.