2026-03-26 · 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.
GFL responds to EGLE's review comments on the 2025 Semiannual Consent Judgment report, clarifying that wells 327 and 336 had corrective actions completed in November 2025 but were erroneously listed twice in the submission table. For well 440R, GFL explains that a pump installation attempt on 10/23/2025 failed due to an obstruction and pump entrapment, and the next step is to evaluate the well for possible replacement.
Key data point: Well 440R: pump installation attempt failed 10/23/2025 due to obstruction and stuck pump; well replacement under evaluation (Q4 2025 CJ Report, Section 5.3(B)).
2026-03-25 · Arbor Hills Remediation Area · procedural · routine
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Arbor Hills Landfill Incorporated submitted a reissuance application for NPDES Industrial/Commercial Permit MI0045713, covering a groundwater remediation system that discharges treated groundwater to an unnamed tributary of Johnson Drain. The application underwent corrections for address discrepancies, facility location coordinates, and clarifications on discharge flow rates and treatment methods.
Key data point: Maximum authorized daily discharge flow: 1.0 MGD requested (current permit: 0.1 MGD); discharge occurs 24 hours per day, 151 days per year to unnamed tributary of Johnson Drain.
2026-03-24 · Arbor Hills Remediation Area · procedural · routine
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Arbor Hills Landfill Incorporated submitted a reissuance application for NPDES Industrial/Commercial permit MI0045713 on March 24, 2026. The submission describes a groundwater remediation system discharging treated water to an unnamed tributary of Johnson Drain, with corrections requested by the state on facility address, contact information, discharge type characterization, and in-situ bioremediation confirmation.
Key data point: No specific factual readings or measured violations are stated; document is an administrative permit reissuance form with correction requests.
2026-03-23 · 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.
This document is an NPDES permit reissuance application review checklist for Arbor Hills Remediation Area (Permit No. MI0045713), filed March 23, 2026. The application review confirms administrative completeness for discharge monitoring, including analytical data for conventional and toxic pollutants, PFAS questions, and water treatment additives. Most required submittals were included, with laboratory reports previously uploaded to the MiEnviro Portal.
Key data point: No specific measured readings or factual environmental data are stated in this checklist. This is a procedural review form confirming application completeness.
2026-03-23 · Arbor Hills Remediation Area · procedural · Source: EGLE Water Resources Division (application review)
2026-03-20 · 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.
Arbor Hills Landfill, Inc. submitted a reissuance application for its NPDES Industrial/Commercial permit (MI0045713) on March 9, 2026, which was administratively reviewed by EGLE on March 20, 2026. The application was found complete with all required submittals, including analytical data previously uploaded to MiEnviro, and covers groundwater cleanup discharge with PFAS monitoring currently included in the permit.
Key data point: PFAS is present at the facility and monitoring is currently included in the permit; groundwater is contaminated and being treated via in-situ bioremediation and chlorination.
2026-03-13 · Arbor Hills Remediation Area · evidence · routine
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This is a February 2026 Discharge Monitoring Report (DMR) for the Arbor Hills Remediation Area treatment pond (Permit MI0045713 v6.0). The facility reported daily effluent monitoring for flow, suspended solids, biochemical oxygen demand, ammonia nitrogen, phosphorus, cyanide, mercury, PFOS/PFBS/PFOA, temperature, pH, and dissolved oxygen. No discharge occurred February 1–15; discharge began February 16.
Key data point: Treatment pond outfall temperature readings: 46.8°F (Feb 17), 42.0°F (Feb 18), 43.5°F (Feb 19), 35.0°F (Feb 24), 44.3°F (Feb 25), 43.3°F (Feb 26). All parameters reported below permit limits during the discharge period.
2026-03-13 · Arbor Hills Landfill · evidence · Source: GFL / Arbor Hills Landfill transmittal, 2026-03-13; obtained via the June-2026 FCE records-request package (also re-sent 2026-08-23, byte-identical)
2026-03-12 · 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 2025 Second Semi-Annual compliance report filed under Consent Judgment No. 2020-0593-CE, covering July-December 2025. It includes corrective action completion records for several gas wells, Q3 and Q4 2025 Surface Emissions Monitoring (SEM) exceedance tables with CH4/O2 well readings, and a cover letter for the Q3 2025 Perimeter Monitor Root Cause Analysis Investigation.
Key data point: Well 310R2 (Q4 2025 SEM exceedance) measured 41% CH4 and 8% O2, with 64% screen submerged, prior to being cleared as corrected.
2026-03-12 · Arbor Hills Landfill · evidence · notable
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This is Arbor Hills Landfill's 2025 Second Semi-Annual Report filed under Consent Judgment No. 2020-0593-CE, covering multiple CJ subsections including H2S well monitoring, corrective action tracking, surface emissions monitoring (SEM) exceedance tables for Q3 and Q4 2025, and a perimeter air monitor root-cause analysis. It documents numerous gas well exceedances (erosion rills, penetrations, high screen submergence) that were investigated and corrected, along with methane/oxygen readings and vacuum data at each well. A leachate leak and pump failures were also noted and repaired during the period.
Key data point: Q4 2025 SEM Exceedance: Well 310R2 had 64% screen submerged/obstructed (LL exceedance), 41% CH4 and 8% O2, corrective action cleared by 12/16/2025
2026-03-12 · Arbor Hills Landfill · evidence · notable
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This filing is Arbor Hills Landfill's 2025 First Semi-Annual Report submitted to EGLE under Consent Judgment No. 2020-0593-CE, bundling nine compliance attachments. Visible pages show a facility-wide hydrogen sulfide survey of over 100 gas wells (readings ranging from 0 to 576 ppm), Q1 and Q2 2025 Surface Emission Monitoring (SEM) exceedance tables showing surface readings up to 2,444 ppm that were corrected via soil/bentonite cover repairs within the required 30-day window, and a separate First Quarter 2025 Perimeter Monitor Root Cause Analysis Investigation Report cover letter.
Key data point: Well WW-234R3 recorded an initial Q1 2025 surface emission reading of 2,444 ppm (Feb 12-14, 2025), the highest SEM exceedance in this Consent Judgment No. 2020-0593-CE semi-annual report.
2026-03-11 · Arbor Hills Landfill · evidence · Source: Michigan EGLE, Materials Management Division (Solid Waste Section)
2026-03-09 · 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.
Arbor Hills filed a Groundwater Discharge Permit Application (NPDES MI0045713) describing the remediation system including lined aeration ditches and two ponds with treatment and outfall infrastructure. The document presents the technical flow schematic and system configuration for groundwater treatment. This is a procedural permit filing with no specific measured data or violation findings.
Key data point: No specific factual readings or measured values provided; this is a permit application schematic document.
2026-03-09 · Arbor Hills Remediation Area · procedural · routine
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EGLE approved Arbor Hills' October 2021 request to use Vitastim Nitrifiers (a bacterial augmentation product by Aquafix Inc.) as a water treatment additive in its NPDES-permitted discharge (Outfall 001). The product would be dosed at 0.0 mg/L discharge concentration into an unnamed tributary of Johnson Drain, 7 days/week from December through March. Approval was granted because the proposed dosage and discharge concentration fall below Water Quality-Based Effluent Limits and the product appears on the Acceptable Michigan Bacterial Augmentation Product List.
Key data point: Vitastim Nitrifiers approved at 0.0 mg/L discharge concentration, dosing rate 1 gal/day for 10 days into 4,000,000-gallon pond (0.125 ppm nitrafix concentration), Outfall 001 to Johnson Drain tributary, NPDES MI0045713, decision date 3/14/2022.
2026-03-09 · Arbor Hills Remediation Area · procedural · routine
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This is a site plan or engineering diagram for Arbor Hills Landfill showing property boundaries, infrastructure (slurry wall, aeration ditch, gradient control pump), and receiving water features. The document appears to be a technical drawing filed on 2026-03-09 with no stated data or violation content.
Key data point: No specific factual readings or claims; this is a legend and scale diagram without quantitative environmental measurements.
2026-03-09 · 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.
This document is a technical schematic/engineering drawing depicting groundwater treatment infrastructure, including valve pits, treatment buildings, ponds, and associated piping systems at what appears to be an industrial or remediation facility. The drawing shows mechanical details for water flow control and treatment processes but contains no legible performance data or measurements relevant to landfill operations or environmental compliance.
Key data point: No specific factual readings or compliance data are extractable from this document; it is an engineering schematic with largely illegible text and mechanical diagrams.
2026-03-09 · Arbor Hills Remediation Area · evidence · routine
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Trace Analytical Laboratories analyzed two wastewater samples (composite and grab) collected from Outfall-001A at the Arbor Hills Landfill on December 4, 2025. The samples were tested for volatile organic compounds, ammonia, total suspended solids, biochemical oxygen demand, phenolics, and cyanide using EPA-approved methods. All volatile organic compounds were below detection limits; cyanide (available) was detected at 2.1 µg/L.
Key data point: Cyanide (available) measured at 2.1 µg/L in Outfall-001A Grab sample, collected 12/04/25.
2026-03-09 · Arbor Hills Remediation Area · evidence · routine
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Trace Analytical Laboratories report dated December 16, 2025 presenting wastewater analytical results from Outfall-001A (composite and grab samples collected December 4, 2025) for GFL Environmental's Arbor Hills Landfill NPDES permit. The analysis covers volatile organic compounds, ammonia, total suspended solids, biochemical oxygen demand, phenolics, and cyanide using EPA-approved methods with quality control validation.
Key data point: Cyanide (Available) measured at 2.1 ug/L in Outfall-001A grab sample collected 2025-12-04; all volatile organic compounds tested below detection limits; ammonia 0.053 mg/L.
2026-03-09 · Arbor Hills Remediation Area · evidence · 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 PFAS analytical report for a wastewater sample (Outfall-001A) collected from GFL Environmental's Arbor Hills Landfill on December 4, 2025, and analyzed by Metiri Group using EPA Method 537M. The report documents the presence of multiple PFAS compounds including PFBA (100 ng/L), PFPeA (44 ng/L), PFHxA (40 ng/L), PFBS (10 ng/L), and others, with quality assurance protocols met.
Key data point: PFBA 100 ng/L, PFPeA 44 ng/L, PFHxA 40 ng/L detected in Outfall-001A wastewater sample, December 4, 2025.
2026-03-09 · Arbor Hills Remediation Area · evidence · routine
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This is a wastewater analytical report for Arbor Hills Landfill (GFL-NPDES 5092) covering a composite sample from Outfall 001A collected December 3, 2025. The laboratory analysis tested for metals, semi-volatile organic compounds, pesticides/PCBs, and standard wet-chemistry parameters using EPA and Standard Methods. Most analytes were below detection limits or within expected ranges, with no exceedances of MCLs reported.
Key data point: No specific factual violation or exceedance detected; all measured values either below reporting limits or within expected ranges for wastewater outfall monitoring.
2026-03-09 · Arbor Hills Remediation Area · evidence · routine
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This is a Certificate of Analysis from Trace Analytical Laboratories dated December 15, 2025, reporting results from a wastewater composite sample (Outfall 001A) collected December 3, 2025, for GFL Environmental's Arbor Hills Landfill NPDES permit. The analysis includes metals, semi-volatile organic compounds, pesticides/PCBs, and wet chemistry parameters, with nearly all analytes detected below reporting limits or within acceptable ranges. Key measured detections include Boron (96 µg/L), Calcium (30,000 µg/L), Magnesium (26,000 µg/L), Nickel (9.2 µg/L), Ammonia as N (0.067 mg/L), and Total Phosphorus (0.022 mg/L); most regulated compounds showed non-detectable results.
Key data point: Outfall 001A composite sample (12/03/2025): Nickel 9.2 µg/L detected; most metals, semi-volatiles, and pesticides below detection limits. No temperature, CO, or oxygen readings present in this wastewater analytical report.
2026-03-09 · 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.
This document describes the current groundwater remediation system at Arbor Hills, consisting of a gradient control well (GC-1R), aeration ditch, and two holding ponds that treat extracted groundwater before discharge through Outfall 001A between December and April. The document notes that an earlier remediation well field was decommissioned in 2011 and the treatment system was subsequently taken offline with State approval.
Key data point: No specific factual reading or measurement is provided; the document is a system schematic description with no quantitative data.
2026-03-02 · Arbor Hills Landfill · procedural · routine
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EGLE's Air Quality Division approved GFL's request for a 60-day extension to complete corrective action on well AHW265R3, moving the deadline from approximately March 2026 to April 28, 2026. This is a routine procedural approval of an extension request submitted via the MiEnviro portal on February 27, 2026.
Key data point: Well AHW265R3 corrective action deadline extended to April 28, 2026 (60-day extension approved by EGLE AQD).
2026-02-24 · Arbor Hills Landfill (Land & Water Interface) · procedural · routine
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GFL's contractors request a pre-application meeting with EGLE on March 2, 2026 to discuss a wetland permit application for the Arbor Hills site. The agenda covers project history (including a 2016 Great Lakes Recycling fire and potential PFOS/AFFF contamination in a wetland-Pond 3 interconnection), required permits under Parts 301 and 303, sediment and soil testing, and a phased timeline for wetland impacts, surface-water pumping/treatment, soils removal, and backfilling.
Key data point: Proposed 6-month timeline for wetland permit application and approval; potential PFOS and AFFF contamination from 2016 Great Lakes Recycling fire linked to Arbor Hills wetland and Pond 3.
2026-02-20 · Arbor Hills Remediation Area · evidence · routine
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This is a January 2026 Discharge Monitoring Report (DMR) for the Arbor Hills Remediation Area (Permit MI0045713 v6.0), covering treatment pond discharge from the remediation system. The facility discharged during January 5–20, 2026, then shut down due to extreme cold temperatures; minimal discharge occurred on January 29 to collect required samples. All measured parameters remained within permit limits.
Key data point: Measured discharge temperature maximum 42.1°F (Jan 14, 2026); PFOS, PFBS, and PFOA reported on GFL's DMR as 1.2, 8.4, and 8.0 µg/L (apparently a units error: the parallel January 2026 DMR reports the same results as 0.0012, 0.0084, and 0.0080 µg/L, i.e. about 1.2, 8.4, and 8.0 ng/L, and 1.2 µg/L would be roughly 100 times the 12 ng/L PFOS standard); other water-quality parameters within permit limits.
2026-02-09 · Arbor Hills Landfill · procedural · routine
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EGLE's Air Quality Division approved GFL Environmental's request to decommission 20 monitoring wells at Arbor Hills Landfill on February 9, 2026, after a revised submittal dated January 5, 2026. The approval followed clarification of well locations and justifications for retiring wells including TCH7, TCH8, and HW37, which showed reduced effectiveness or instability.
Key data point: 20 wells approved for decommissioning: AH4ETGW1, AHEWHW23, AHEWHW29, AHWTCH06-11, AHWWHW14, 17-19, 28, 31, 36-38, 40-41 (EGLE AQD approval dated 2/9/26).
2026-02-05 · Arbor Hills Landfill · evidence · notable
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This is the Q2 2022 Vertical Gas Collection (VGC) Well Liquid Monitoring and Management Report for Arbor Hills Landfill, submitted to EGLE in compliance with Consent Judgment 2020-0593-CE. The report documents liquid level monitoring, pump functionality, and corrective actions across multiple gas extraction wells at both the open AH West (210.5 acres) and closed AH East (131 acres) sections of the landfill.
Key data point: Multiple wells identified with obstructions, stuck pumps, and liquid-level issues; 30 wells in AH West and related wells in AH East added to 2022 construction project scope for replacement or abandonment; numerous pump replacements conducted in Q2 2022 (June 2022).
2026-02-05 · Arbor Hills Landfill · procedural · routine
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Weaver Consultants Group conducted a third-party engineering evaluation of Arbor Hills Landfill in Q3 2022 (September 15, 2022 inspection) to assess leachate minimization and stormwater management under the Consent Judgment. The report finds that cover systems, grading, and stormwater diversion are generally in good condition and capable of minimizing infiltration, though minor improvements are recommended for vegetation, erosion repairs, and ditch completion.
Key data point: No specific measured data point. Report is a qualitative engineering assessment; no temperature, CO, or chemical readings are provided.
2026-02-05 · Arbor Hills Landfill · evidence · notable
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GFL's Q3 2023 Wells of Interest (WOI) Quarterly Status Report documents temperature, gas composition, and operational data for the HOV-waivered wells at Arbor Hills Landfill. The report shows ongoing subsurface oxidation monitoring, with multiple wells displaying elevated temperatures (several in the 120–158°F range); well replacements and gas-extraction infrastructure upgrades continue to address historical subsidence and cracks. No new subsidence or geysers have been observed since March 2019, though carbon monoxide and hydrogen levels remain tracked monthly.
Key data point: Well AHWW312R measured at 158.3°F (8/29/2023); 16+ wells remain on active HOV waivers since 2019; three new wells (AHWW0313, AHWWTS01, AHWW0287) added to WOI in June 2023 due to temperatures exceeding 131°F.
2026-02-05 · Arbor Hills Landfill · procedural · routine
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GFL submitted a status update on September 28, 2023, regarding corrective actions at vertical gas collection wells at Arbor Hills Landfill, following an EGLE-approved supplemental extension request from June 2023. The letter reports on actions with target due dates of August 7 and September 26, 2023, and commits to submitting follow-up reports by October 30, 2023, and January 30, 2024.
Key data point: No specific quantitative readings or measured violation data provided; document is a procedural status update with no citable factual claims about temperatures, CO levels, or compliance metrics.
2026-02-05 · Arbor Hills Landfill · evidence · routine
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Q1 2023 Well Liquid Monitoring and Management Report for Arbor Hills Landfill covering gas well screen submersion, obstruction, and pump status across East and West sections. The report documents widespread well infrastructure issues including obstructions, stuck pumps, high liquid levels, and corrective actions needed across dozens of monitoring wells.
Key data point: No specific measured temperature, CO, or other air-quality readings are presented in this excerpt. The document focuses on well liquid levels, screen submersion percentages, and pump operational status rather than subsurface oxidation or gas-extraction metrics.
2026-02-05 · Arbor Hills Landfill · evidence · routine
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This is a Q1 2024 Well Liquid Monitoring and Management Report for Arbor Hills East and West Landfills, documenting gas well screen submersion, liquid levels, pump performance, and maintenance actions across multiple monitoring tables. The report tracks operational status, identifies wells requiring corrective action, and logs pump daily averages and sediment obstruction data for the first quarter of 2024.
Key data point: No quantitative temperature, CO, or air-quality measurements are present in the excerpted pages. This is a hydrogeological and gas-extraction monitoring document (liquid levels, screen submersion, pump counts) rather than an air-emissions or temperature report.
2026-02-05 · Arbor Hills Landfill · evidence · notable
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This is a 328-page Gas Extraction Report from Arbor Hills Landfill covering September and October 2022, including methane/CO₂/O₂ composition data from extraction wells, carbon monoxide (CO) Drager tube readings from 23+ Wells of Interest (WOI), and hydrogen/nitrogen test results. The document confirms quarterly monitoring of gas composition and subsurface oxidation indicators across the active landfill gas system under the May 2019 HOV (Higher Operating Value) approval.
Key data point: Drager tube CO readings from WOI wells in September and October 2022 ranged from 0 to 5–10 ppm; hydrogen readings consistently 0.0–0.2%; no measured temperatures cited in these excerpts, but wells became WOI status due to prior recorded temperatures exceeding 131°F (notably AHW237R3, AHW251R2, AHW300 as of September 1, 2020, and AHW306R, AHW503R as of June 18, 2019).
2026-02-05 · Arbor Hills Landfill · procedural · routine
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This is the 2022 Annual Supplemental Environmental Projects (SEP) report filed by Arbor Hills Landfill under Consent Judgment No. 2020-0593-CE. The report documents three SEP initiatives: installation and operation of six perimeter air-monitoring stations (H2S and methane), construction of a Household Hazardous Waste facility, and planting of 72 spruce trees as a vegetative buffer to reduce odor and particulate transport.
Key data point: No specific measured air-quality or temperature readings are provided in the excerpted pages. The report documents SEP expenditures ($585,703.55 for perimeter monitoring in 2022) and facility completion dates but does not include quantitative emissions or temperature data.
2026-02-05 · Arbor Hills Landfill · evidence · 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 592-page Gas Extraction Report for Arbor Hills Landfill documents well monitoring data from January to March 2024, including detailed gas composition (methane, CO2, oxygen), temperature readings from multiple extraction wells, and carbon monoxide measurements across the Wells of Interest (WOI) network. The report includes pump maintenance records and operational status for the landfill gas management system.
Key data point: Multiple WOI wells show measured temperatures in the 116–124°F range (AH147AR4, AH148AR3, AH148BR2 measured 117.9–124.1°F, Jan–Mar 2024); CO readings remain low (0–5 ppm predominantly), with isolated March spikes (10–30 ppm in AHWW287R, AHWW311R, AHWW312R, AHWWTS01).
2026-02-05 · Arbor Hills Landfill · evidence · 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 Q4 2022 Vertical Gas Collection Well Liquid Monitoring and Management Report documents the condition of gas extraction wells at Arbor Hills Landfill and compliance with Consent Judgment No. 2020-0593-CE. The report assesses liquid levels, screen submersion, obstructions, and pump performance across multiple wells in both the East (AH East) and West (AH West) sections, identifying wells requiring replacement or corrective action.
Key data point: Multiple wells identified with obstruction, pinching, and inadequate screen submersion requiring redrill or replacement by 5/29/2023; well obstruction issues documented with camera work (e.g., AHWW0290, AHWW0301, AHWW0302, AHWW303R); no measured temperature readings provided in this report.
2026-02-05 · Arbor Hills Landfill · procedural · routine
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Tetra Tech engineers conducted a Q1 2024 quarterly inspection of Arbor Hills Landfill to evaluate leachate minimization and stormwater management under the 2022 Consent Judgment. The inspection found cover systems generally in good condition and capable of diverting stormwater, with ongoing final cover installations on the south slope nearing completion and minor repairs recommended for erosion control and vegetation establishment.
Key data point: No specific quantitative data; document is a qualitative engineering inspection. Key finding: cover systems functioning adequately and diverting stormwater; approximately 19 acres of final membrane liner (FML) installed on south slope with protective cover being placed.
2026-02-05 · Arbor Hills Landfill · evidence · routine
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This is a Q2 2023 Liquid Level Report for Arbor Hills East vertical gas wells, presenting detailed hydrogeological measurements (depth to liquid, leachate thickness, screen submersion) across 79 pages of tabular data for multiple monitoring wells.
Key data point: No specific factual readings (temperatures, CO, contaminant concentrations, or regulatory violations) are presented in this liquid level dataset; the document contains only well construction parameters and leachate depth measurements.
2026-02-05 · Arbor Hills Landfill · evidence · routine
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This is GFL's 2025 First Semi-Annual WOI (Wells of Interest) Status Report submitted to EGLE in July 2025, covering January–June 2025 landfill gas extraction and temperature monitoring at Arbor Hills Landfill under active HOV (Higher Operating Value) waivers. The document reports continued infrastructure upgrades, well replacements, and gas-quality data consistent with historical ranges, with no new subsidence or cracks since 2019.
Key data point: Well AHWW0279 measured at 156.1°F (6/24/2025), consistent with its 155°F HOV approval.
2026-02-05 · Arbor Hills Landfill · procedural · routine
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OPAL Fuels submitted a monthly operational report for Arbor Hills Energy LLC to EGLE's Air Quality Division for August 2023, as required under PTI No. 68-23. The document confirms compliance reporting was filed with the state regulator.
Key data point: No specific factual readings or measurements are disclosed in this cover letter; the actual monthly report data is referenced as 'enclosed' but not reproduced here.
2026-02-05 · Arbor Hills Landfill · evidence · notable
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GFL Arbor Hills Landfill submitted its 2025 First Semi-Annual WOI (Wells of Interest) Status Report covering January through June 2025, detailing monitoring of temperature-controlled wells, gas extraction infrastructure improvements, and maintenance activities. The report documents ongoing subsurface conditions, gas quality data, and compliance with HOV (Higher Operating Value) approval letters. GFL reports that no new subsidence, cracks, or ground movement have been identified since 2019, and that gas quality has remained consistent.
Key data point: Well AHWW0279 measured at 156.1°F (6.1°F above the 150°F HOV limit) on 2025-06-24; multiple wells maintained on active HOV waivers with approved temperature ceilings ranging from 155°F to higher values; report references earlier subsurface oxidation event in 2019 attributed to "near-surface subsurface oxidation event."
2026-02-05 · Arbor Hills Landfill · evidence · routine
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This is a 76-page quarterly liquid-level report (Q4 2022) for gas extraction wells at Arbor Hills East landfill, documenting depth-to-liquid measurements, screen submersion percentages, and sediment obstruction levels across multiple well locations from 2020–2022. The data shows ongoing monitoring of leachate levels in gas wells with periodic dry conditions and varying degrees of screen submersion. No temperature, carbon monoxide, or air-quality measurements are included in this excerpt.
Key data point: No specific factual measurement of temperature, CO, or air quality is stated. Document contains only liquid-level and well-construction data.
2026-02-05 · 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.
Tetra Tech conducted a required quarterly leachate minimization engineering evaluation at Arbor Hills Landfill in May 2024, assessing stormwater diversion, cover integrity, and settlement risk under the 2022 Consent Judgment. The site's grading, interim/temporary/final cover systems, and stormwater controls were found to be generally in good condition and capable of diverting stormwater away from active areas, with precipitation infiltration potential improved from Q1 2024. Several areas require vegetation establishment, minor erosion protection improvements, and ongoing monitoring of settlement and cover conditions.
Key data point: Q2 2024 quarterly inspection (May 15, 2024) found stormwater diversion adequate; interim cover slopes at 4:1 (25%) or less; minimal settlement observed; 10.5-acre temporary cap area supplemented with 2 feet of clay soils; one erosion gully noted requiring attention.
2026-02-05 · 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 Q2 2023 Liquid Level Report for Arbor Hills East Vertical Gas Wells presents detailed measurements of leachate depth, screen submersion, and well construction parameters across multiple monitoring wells over time. The data track subsurface conditions from 2020 through May 2023, documenting variations in liquid levels and sediment obstruction across the facility's gas extraction network.
Key data point: No specific temperature, CO, or regulatory violation data present in this Liquid Level Report—the document contains only leachate depth, screen submersion percentages, and well construction parameters. No urgent or notable readings extracted.
2026-02-05 · 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 the Q2 2024 Consent Judgment quarterly report submitted by Arbor Hills Landfill to EGLE, documenting vertical gas collection well liquid monitoring and management across both the East (closed, unlined 131-acre) and West (open, double-lined 210.5-acre) sections of the landfill. The report fulfills reporting requirements under Consent Judgment No. 2020-0593-CE and includes detailed well-by-well liquid level, gas composition, temperature, and pumping data.
Key data point: No measured temperature readings above 145F reported in Q2 2024 VGC well data; document is a routine operational and compliance report with no acute thermal exceedance flagged.
2026-02-05 · Arbor Hills Landfill · evidence · 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 Q2 2023 Well Liquid Monitoring and Management Report documents the operational status of gas extraction wells at Arbor Hills East and West Landfills, covering well depths, liquid levels, screen submersion, pump performance, and corrective actions. The report identifies numerous wells with maintenance issues including stuck pumps, obstructions, and inadequate screen exposure, along with EGLE-approved corrective action extension requests and redrill plans.
Key data point: Multiple wells show pump failures and obstructions requiring corrective action; 10+ wells in West Landfill designated for redrilling; EGLE approved corrective action extension requests on 6/15/2023 for wells including AHW260R2, AHWW0262, AHWW0287, AHWW0290, AHWW0301, AHWW0302, AHWW334, AHWW0278, and others.
2026-02-05 · Arbor Hills Landfill · evidence · 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 Q1 2023 Well Liquid Monitoring and Management Report documents the status of gas extraction and leachate management systems at Arbor Hills East and West Landfills. It tabulates screen submersion, obstruction levels, pump operation, and corrective actions across dozens of monitoring wells, revealing widespread system degradation including stuck pumps, obstructed pipes, and high liquid levels requiring well replacement or reinstallation.
Key data point: Multiple wells showing >50% screen submersion or obstruction requiring corrective action; numerous wells flagged for pump installation, replacement, or air/force-main restoration due to operational failures in Q1 2023.
2026-02-05 · Arbor Hills Landfill · evidence · 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 Q2 2023 quarterly well monitoring report for Arbor Hills East and West Landfills documenting leachate and gas extraction well operational status, liquid levels, screen conditions, pump performance, and recommended corrective actions across multiple well categories.
Key data point: Multiple wells across both East and West facilities show persistent operational issues: wells with obstructed screens, stuck or non-functioning pumps, high liquid levels submerging >50% of screens, and numerous corrective action extensions approved by EGLE; report spans pages 1-48 covering dozens of individual well assessments from 2023Q2 (Q2 = Apr-Jun 2023).
2026-02-05 · Arbor Hills Landfill · evidence · 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 the cover letter and first set of attachments for the 2023 Second Semi-Annual Consent Judgment Report (CJ No. 2020-0593-CE) filed by Arbor Hills Landfill on March 15, 2024. The document addresses multiple compliance sections including H2S concentrations, corrective actions completed, SEM exceedances, and perimeter monitoring procedures. Specific measured temperatures and gas-collection system maintenance are documented across multiple wells.
Key data point: Well 258R measured temperature approximately 120°F (4th Quarter 2023 SEM data, as of ~December 2023)
2026-02-05 · 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 in November 2023 to minimize leachate generation, based on a third-party engineering evaluation by Tetra Tech conducted in October 2023. The plan addresses stormwater diversion, cover maintenance, vegetation establishment, and erosion control across multiple landfill slopes and cells. No quantitative measurements of temperature, gas, or water quality are reported in this document.
Key data point: No specific factual readings (temperature, CO, leachate levels, or water-quality data) are provided; this is a procedural compliance submission describing planned and completed maintenance actions.