2026-02-05 · Arbor Hills Landfill · evidence · notable
This Q2 2022 Vertical Gas Collection Well Liquid Monitoring and Management Report documents the status of gas extraction wells at Arbor Hills Landfill per Consent Judgment 2020-0593-CE. The report evaluates liquid levels, screen submersion, pump functionality, and identifies wells requiring corrective action including replacement, maintenance, and abandonment across the 210.5-acre AH West and 131-acre AH East sections.
Key data point: No measured temperature readings provided in this liquid and pump monitoring report; document focuses on well geometry, liquid levels, and pump performance rather than subsurface oxidation or thermal data.
2026-02-05 · Arbor Hills Landfill · evidence · notable
Arbor Hills Landfill responded to an October 10, 2023 EGLE violation notice alleging odor exceedances on 6-Mile Road and Napier Road near the site in early October 2023. The facility reported detecting unusual odors from Cell 6A in early September, identified multiple source areas using H2S meters and drone scans, and implemented a series of remedial measures including clay cover, gas collection piping, and temporary vacuum lines to the leachate cleanout risers. The combined efforts were reported to have eliminated the odor source by mid-October, and the facility committed to enhanced monitoring and a large-scale gas collection project scheduled for completion by January 2024.
Key data point: Odor violations verified on 6-Mile Road and Napier Road, October 5–6, 2023; source traced to Cell 6A; remedial measures (clay, 200-ft gas collection pipe, leachate riser vacuum lines) implemented September–October 2023 and reported mitigated by October 11.
2026-02-05 · Arbor Hills Landfill · evidence · routine
Arbor Hills Landfill submitted its Third Quarter 2024 Perimeter Monitor Root Cause Analysis Investigation Report to EGLE on October 9, 2024, as required under Consent Judgment No. 2020-0593-CE. The report documents investigations of perimeter monitoring alarms during July and August 2024, following a standardized procedure that includes weather analysis, back-trajectory modeling, site walks, and gas-well evaluation. All investigations found no obvious deficiencies; leachate systems and compost operations reported no issues.
Key data point: Perimeter monitoring action-level alarm thresholds: 40 ppm methane, 7 ppm hydrogen sulfide. Multiple Q3 2024 investigations conducted (July 1–6, July 13–15, July 19–25, July 27–31, August 3–9) with no deficiencies identified.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This is the 2022 Annual Supplemental Environmental Projects (SEP) report filed by Arbor Hills Landfill under Consent Judgment No. 2020-0593-CE, documenting compliance with three required mitigation measures: perimeter air-quality monitoring (6 Scentroid stations tracking H2S and methane), construction of a Household Hazardous Waste facility, and a vegetative buffer of spruce trees to reduce particulate and odor transport. The report details expenditures totaling approximately $1.04 million and notes operational challenges with solar-powered monitoring batteries and regulatory approvals needed before the HHW facility can open.
Key data point: Perimeter air monitoring for H2S and methane installed at 6 Scentroid locations spanning ¾ mile along the east side (north of Six Mile Road to southeast corner); no quantitative air readings or exceedances reported in this summary document.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This is the Q2 2023 Vertical Gas Collection Well Liquid Monitoring and Management Report for Arbor Hills Landfill, submitted to EGLE in compliance with Consent Judgment No. 2020-0593-CE. The report documents liquid level, gas composition, temperature, and flow data across dozens of vertical wells at both the Arbor Hills East and West facilities, tracking screen submersion, pump functionality, and compliance with the 50% open screen standard. Multiple wells require corrective actions including pump maintenance, well replacement, and redrilling due to obstruction or insufficient liquid levels.
Key data point: No single measured temperature or CO exceedance reported. Document focuses on well liquid levels and pump functionality; gas composition and temperature data referenced in Appendix D but not detailed in the provided pages.
2026-02-05 · Arbor Hills Landfill · procedural · routine
Tetra Tech performed a Q2 2023 engineering evaluation of Arbor Hills Landfill's leachate minimization and stormwater management systems, as required by the 2022 Consent Judgment with EGLE. The inspection found cover systems and grading generally in good condition with adequate stormwater diversion, though vegetation establishment was slow due to dry conditions and several minor repairs and seeding improvements were recommended.
Key data point: No specific measured environmental readings (temperature, CO, water quality) provided; document is a procedural engineering inspection and cover-condition assessment.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This is a notification letter from Arbor Hills Landfill informing the Michigan Department of Environment, Great Lakes, and Energy of a change in the facility's distribution contact list under the Consent Judgment. The letter updates the primary contact from Tony Pelletier to Fernando Camargo, the Area Landfill Director.
Key data point: No specific factual measurements or regulatory findings are present; this is an administrative contact update required by Consent Judgment CJ No. 2020-0593-CE Section 10.1.
2026-02-05 · Arbor Hills Landfill · evidence · urgent
This is a 2022 semi-annual Consent Judgment compliance report (CJ 2020-0593-CE) filed by Arbor Hills Landfill Inc. with the Michigan EGLE Air Quality Division. The document includes detailed gas well measurements—hydrogen sulfide concentrations in May 2022 from dozens of wells—and records of second-quarter 2022 surface emissions exceedances with corrective actions (cover placement, liquid level management, gas collection system repair). Multiple wells showed elevated H₂S levels; one well (AHWW0266) reached 13,498 ppm H₂S, and another (AHWTS01R, a leach sump) measured 8,947 ppm H₂S in May 2022.
Key data point: May 2022: Well AHWW0266 measured 13,498 ppm hydrogen sulfide (highest reading); leach sump AHWTS01R measured 8,947 ppm H₂S. Also numerous surface emissions exceedances in Q2 2022 (40,000 ppm penetration at EWL L9R, 24,000 ppm at TR-26, 18,000 ppm at WW-260R).
2026-02-05 · Arbor Hills Landfill · evidence · notable
This 366-page Gas Extraction Report presents quarterly monitoring data from March and April 2023 for the Arbor Hills Landfill, including methane/CO2/oxygen composition from gas extraction wells, carbon monoxide (CO) measurements from Wells of Interest (WOI), and hydrogen/nitrogen readings. The report documents subsurface gas conditions and tracks wells flagged for elevated temperatures (131°F+) under the May 2019 Higher Operating Value (HOV) approval.
Key data point: Carbon monoxide readings from WOI wells in March 2023 ranged 0–30 ppm (scale 5–700 ppm); April 2023 readings showed AHWW0300 at 30–40 ppm, indicating sporadic CO generation in monitored zones. Wells 237R3, 251R2, and 300 became WOI effective September 1, 2020 based on recorded temperatures exceeding 131°F.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This document appears to be a site identification or administrative header with minimal substantive content. It contains only a document name field labeled 'Site', a filing date of February 5, 2026, and a document type designation.
Key data point: No specific factual reading or claim is present in this document.
2026-02-05 · Arbor Hills Landfill · evidence · notable
Q1 2024 Wells of Interest Status Report for Arbor Hills East and West Landfills, detailing liquid level monitoring, screen submersion, sediment obstruction, and pump operation across multiple gas extraction wells. The report tracks well maintenance actions, pump counts, and identified corrective actions needed.
Key data point: Well AHW272R4 shows 90% screen submerged in Q1 2024; multiple wells across both sites have documented obstruction issues and pump maintenance needs.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This 250-page Gas Extraction Report documents methane, carbon dioxide, oxygen, carbon monoxide, and hydrogen readings from multiple wells at Arbor Hills Landfill during May and June 2023. The report includes detailed gas composition data, differential pressure measurements, and CO readings from Wells of Interest (WOI) tracked under the May 2019 HOV (Higher Operating Value) approval. Well AHWW0313 was added to the WOI list in June 2023 after recording temperatures exceeding 131°F.
Key data point: Well AHWW0313 added to WOI effective June 13, 2023 due to recorded temperatures exceeding 131°F; CO readings in June 2023 ranged from 0 to 196 ppm across WOI wells, with AHWW0315 at 196 ppm (5/24/2023) and AHWW0279 at 150 ppm (5/9/2023).
2026-02-05 · Arbor Hills Landfill · procedural · routine
Arbor Hills Landfill submitted its 2023 Supplemental Environmental Projects (SEP) annual report to EGLE under Consent Judgment No. 2020-0593-CE, detailing expenditures and progress on three SEP initiatives: perimeter emissions monitoring ($222,000 in 2023 operations), a household hazardous waste facility ($102,000 in 2023 operations), and vegetative buffer plantings ($76,476.95 in 2023). The report documents compliance with consent judgment obligations and includes supporting invoices and expenditure documentation.
Key data point: No specific measured readings of temperature, CO, or other air quality parameters are provided in this procedural compliance report. The document confirms installation and operation of 6 Scentroid CTair perimeter monitors (monitoring H2S and methane) but does not include actual 2023 emissions data.
2026-02-05 · Arbor Hills Landfill · evidence · routine
Q3 2022 Vertical Gas Collection Well Liquid Monitoring and Management Report for Arbor Hills Landfill, submitted under Consent Judgment CJ No. 2020-0593-CE. The report documents routine monitoring of liquid levels, gas composition, and pump operation across 40+ wells at both AH East and AH West sections, with corrective actions and well replacements implemented throughout 2022 in response to prior assessment recommendations.
Key data point: No measured temperature readings above the MACT limit reported in this Q3 2022 quarterly document. The report focuses on liquid level management and pump functionality rather than subsurface temperature data.
2026-02-05 · Arbor Hills Landfill · procedural · routine
Arbor Hills Landfill submitted its Q3 2024 quarterly compliance report to the Michigan Department of Environment, Great Lakes, and Energy under Consent Judgment No. 2020-0593-CE, including leachate summaries for July–September 2024 and laboratory analytical results for leachate samples. The report certifies compliance with recordkeeping and reporting requirements under the Consent Judgment.
Key data point: No specific temperature, CO, or violation readings are presented on the cover letter or keyword-matched excerpt pages; the document is primarily a procedural filing cover and leachate volume/chemistry summaries without measured exceedance data.
2026-02-05 · Arbor Hills Landfill · evidence · notable
AHL's 2022 First Semi-Annual Report submitted to EGLE under Consent Judgment 2020-0593-CE contains gas well monitoring data and SEM exceedance corrective actions. The report documents hydrogen sulfide concentrations from 100+ wells/sampling points in May 2022 and corrective measures for 36 SEM (surface emission monitoring) exceedances detected in Q2 2022, most corrected by additional cover placement.
Key data point: H₂S concentrations: AHWW0266 = 13,498 ppm (exceeds 10,000 ppm threshold), AHWTS01R = 8,947 ppm, AHW268R2 = 4,463 ppm; multiple wells >1,000 ppm in May 2022. 36 SEM exceedances in Q2 2022 with corrective actions initiated.
2026-02-05 · Arbor Hills Landfill · evidence · routine
This is the Q4 2023 Consent Judgment quarterly report from Arbor Hills Landfill to EGLE, submitted January 30, 2024, covering vertical gas collection well liquid-level monitoring, gas composition data, and well maintenance requirements under CJ No. 2020-0593-CE. The report documents well-screen submersion rates, pump functionality, and recommended corrective actions including well replacements at both Arbor Hills East and West sections.
Key data point: No single measured temperature or CO reading above emergency thresholds reported in this excerpt; document tracks well-screen liquid levels, pump operations, and maintenance scheduling. Full report spans 886 pages with detailed well-by-well data tables.
2026-02-05 · Arbor Hills Landfill · procedural · routine
Arbor Hills Landfill submitted its First Quarter 2024 Perimeter Monitor Root Cause Analysis Investigation Report to EGLE on April 15, 2024, documenting procedures and findings for methane and hydrogen sulfide action level alarms at the perimeter monitoring stations. The report covers multiple alarm events in December 2023, including investigation protocols, weather data, and root cause determinations, with findings of no significant deficiencies except for one instance of odor from leachate lift station upgrades.
Key data point: Methane action level alarm threshold: 40 ppm; hydrogen sulfide action level alarm threshold: 7 ppm. Multiple CH4 and H2S alarms registered at monitor MS-2 on December 5, 2023 (0:19–3:50 EST). Leachate re-routing on December 16, 2023 temporarily reduced peroxide dosing effectiveness, causing odor.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This is a comprehensive gas extraction and Wells of Interest monitoring report for Arbor Hills Landfill covering May–June 2023, documenting methane, CO2, oxygen, carbon monoxide, and hydrogen readings across multiple monitoring wells. The report includes detailed attachments tracking CO levels via Drager tubes and hydrogen/nitrogen via quarterly Method 3C/25 sampling at wells designated under the May 2019 HOV approval.
Key data point: Well AHWW0315 measured 196 ppm CO on 5/24/2023 (Drager tube); Well AHWW0313 added to WOI effective 6/13/2023 due to measured temperatures exceeding 131°F; multiple wells show CO and hydrogen readings in May–June 2023.
2026-02-05 · Arbor Hills Landfill · evidence · routine
Weaver Consultants Group conducted a December 2022 quarterly engineering evaluation of Arbor Hills Landfill's leachate minimization systems under Consent Judgment CJ No. 2020-0593-CE. The assessment found cover systems and stormwater diversion structures generally in good condition, with recommendations for additional erosion protection, vegetation seeding, and continued maintenance of diversion berms. GFL submitted an action plan in January 2023 committing to complete recommended improvements including stone check dams, vegetation evaluation and reseeding, and continued berm maintenance through Q1 2023.
Key data point: Cover systems found capable of diverting stormwater and minimizing leachate generation; temporary stormwater collection area in Cell 4F/6A observed with standing water but determined to present low leachate generation potential as it is outside current waste area boundaries.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This is the cover letter and first sections of Arbor Hills Landfill's third-quarter 2023 Consent Judgment compliance report (CJ No. 2020-0593-CE), filed October 30, 2023. The document describes the landfill's Wells of Interest monitoring program, including vertical gas-extraction wells, liquid-level monitoring, pumping operations, and corrective actions undertaken during Q3 2023. The submission includes quarterly data collection from 45 of 205 active vertical wells, multiple construction phases (Phase 2 through Phase 5) completed or ongoing, and infrastructure improvements to gas collection and well de-watering systems.
Key data point: No specific measured temperature or CO readings are stated on the cover pages provided. The document references 'Wells of Interest' and monitoring data tables in attachments, but the actual quantitative readings are not visible in the excerpts shown.
2026-02-05 · Arbor Hills Landfill · evidence · notable
A 366-page Gas Extraction Report from Arbor Hills Landfill (filed Feb 5, 2026) containing detailed quarterly monitoring data for wells of interest (WOI) under the May 2019 HOV approval. The document includes methane/CO2/oxygen composition data from March and April 2023, carbon monoxide Drager tube readings, and hydrogen/nitrogen measurements across 20+ monitored wells. Several wells are flagged as WOI due to recorded temperatures exceeding 131°F, indicating subsurface thermal activity consistent with elevated temperature landfill (ETLF) conditions.
Key data point: Wells 237R3, 251R2, and 300 became Wells of Interest effective September 1, 2020 based on recorded temperatures exceeding 131 degrees F; multiple wells under active HOV waiver monitoring since May 2019.
2026-02-05 · Arbor Hills Landfill · evidence · routine
This is a Gas Extraction Report from Arbor Hills Landfill covering September and October 2022, documenting landfill gas composition (methane, CO₂, oxygen) from multiple extraction wells and carbon monoxide/hydrogen readings from Wells of Interest monitored under the May 6, 2019 HOV (Higher Operating Value) approval. The document includes Drager tube CO measurements to demonstrate the absence of subsurface smoldering oxidation (SSO) across 23+ WOI wells.
Key data point: All Drager tube CO readings from 23+ Wells of Interest in September and October 2022 measured 0–5 ppm, consistent with absence of subsurface oxidation; wells were designated WOI based on historical temperatures exceeding 131°F.
2026-02-05 · Arbor Hills Landfill · procedural · routine
GFL submitted a status update on September 28, 2023, regarding corrective actions at vertical gas collection wells at Arbor Hills Landfill, following EGLE approval of a June 2023 supplemental extension request. The document 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: Document provides no specific factual measurements; it is a procedural status letter referencing corrective action schedules and future reporting deadlines.
2026-02-05 · Arbor Hills Landfill · evidence · routine
GFL submitted its bi-monthly HOV (Higher Operating Value) status report for September and October 2022, documenting Wells of Interest monitoring data. The report includes gas extraction readings, well replacement activities, and carbon monoxide/hydrogen measurements across 22+ wells, all showing low or absent hazardous gas levels.
Key data point: Multiple wells on active HOV waivers since 2019; temperature data in Attachment 7 (Q3 2022 vertical profile) not excerpted here; CO readings consistently 0–5 ppm across all WOI wells in Sept/Oct 2022; no subsidence or crack progression since March 2019 oxidation event.
2026-02-05 · Arbor Hills Landfill · procedural · routine
Arbor Hills Landfill submitted its Q2 2024 Consent Judgment No. 2020-0593-CE quarterly report on July 30, 2024, detailing vertical gas collection well liquid monitoring and management. The report documents well conditions, screen submersion percentages, pump operations, and gas extraction performance across the East and West landfill sections.
Key data point: No specific measured temperature, CO, or other hazardous readings are stated in the excerpt provided; report focuses on well dewatering, pump maintenance, and screen submersion metrics rather than air or thermal emissions data.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This Q4 2022 Arbor Hills Landfill well monitoring report documents the status of gas extraction wells with operational challenges, including liquid-level management, screen submersion, obstruction issues, and pump performance across 48 pages of detailed well-by-well data. The report tracks wells classified by construction issues (low solid pipe, high screen submersion) and recommends corrective actions including pump replacement, well redrilling, and infrastructure repairs. Key findings note multiple wells with stuck pumps, air-pressure losses, obstructions, and frozen discharge lines, along with recurring operational failures requiring reinstatement of air and force-main systems.
Key data point: Multiple wells exhibit obstructions, stuck pumps, and air-pressure losses; Well AHW223R5 and others recommend redrilling; frozen discharge lines repaired 12/27/2022; SEM exceedances documented at several wells in Q4 2022; no measured temperature readings above permit limits reported in this excerpt.
2026-02-05 · Arbor Hills Landfill · procedural · routine
OPAL Fuels submitted a monthly report to Michigan's Air Quality Division for Arbor Hills Energy LLC covering August 2023, as required by PTI No. 68-23. The report transmittal letter provides no specific operational data or measurements.
Key data point: No specific factual readings or claims stated in the document.
2026-02-05 · Arbor Hills Landfill · evidence · notable
Arbor Hills Landfill submitted its Third Quarter 2023 Perimeter Monitor Root Cause Analysis Investigation Report to EGLE under Consent Judgment No. 2020-0593-CE, documenting procedures and findings for methane (CH₄) and hydrogen sulfide (H₂S) alarm events. The report covers multiple alarm incidents in July and August 2023, including detailed root cause analyses, weather data, and facility inspections. All investigated alarms were attributed to operational factors, with no significant deficiencies identified in gas collection systems, cap integrity, or leachate facilities.
Key data point: Perimeter monitor alarm thresholds: 40 ppm for methane, 7 ppm for H₂S; multiple alarm events documented July–August 2023, all investigated with no critical deficiencies found.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This is a Liquid Level Report (Table LL-1) for Arbor Hills East Vertical Gas Wells covering Q1 2023, presenting sounding depths, leachate levels, and screen submersion percentages across multiple monitoring wells over a multi-year period from 2020–2023. The document is a routine operational and monitoring data table with no measured temperature, carbon monoxide, or air-quality readings included. No permit violations, measured temperature exceedances, or subsurface oxidation indicators are documented in the excerpted pages.
Key data point: Document contains no factual temperature, CO, oxygen, or air-quality readings. This is a liquid-level and leachate-depth monitoring table only.
2026-02-05 · Arbor Hills Landfill · evidence · urgent
This is a Q1 2024 Wells of Interest (WOI) Quarterly Status Report submitted by GFL–Arbor Hills Landfill to EGLE on April 15, 2024, documenting landfill gas temperatures, pressures, and chemical composition at multiple monitoring wells. The report includes detailed well-by-well data tables showing methane, CO₂, oxygen levels, temperatures, and pump maintenance records for January through March 2024, along with descriptions of ongoing construction and wellfield management activities.
Key data point: Well AHWW0279 measured at 147.1°F on 3/27/2024; Well AHWW0313 measured at 151°F on 3/12/2024; Well AHWW0312R measured at 152°F on 3/13/2024 (all above 145°F threshold); multiple wells on active HOV waivers with permitted ceilings of 155°F and higher.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This is Arbor Hills Landfill's First Quarter 2024 Perimeter Monitor Root Cause Analysis Investigation Report filed under Consent Judgment No. 2020-0593-CE. The report documents multiple perimeter monitoring alarm events in December 2023, including methane and hydrogen sulfide detections at the MS-2 monitor, with root cause investigations and corrective actions taken. One notable incident involved odor originating from leachate lift station upgrades on the south side of the landfill.
Key data point: Perimeter monitor MS-2 recorded multiple CH4 and H2S alarm events on 12/5/23 and 12/15-16/23; one identified root cause was leachate lift station construction work that temporarily reduced peroxide dosing effectiveness, creating an odor nuisance.
2026-02-05 · Arbor Hills Landfill · evidence · routine
Arbor Hills Landfill submitted its 2023 second semi-annual Consent Judgment compliance report (CJ No. 2020-0593-CE) covering July–December 2023, documenting corrective actions on gas wells, surface emissions monitoring exceedances, and perimeter air monitoring procedures. The 4,839-page document includes nine detailed attachments addressing reporting requirements for H₂S concentrations, corrective actions, SEM exceedances, and operational protocols.
Key data point: One WOI (Well of Interest) location measured approximately 120°F (near well 258R, 4th Quarter 2023); no measured exceedances at or above 145°F reported in this semi-annual period.
2026-02-05 · Arbor Hills Landfill · evidence · routine
This Q3 2022 Vertical Gas Collection Well Liquid Monitoring and Management Report documents the operational status of gas extraction wells at Arbor Hills Landfill under Consent Judgment 2020-0593-CE. The report covers liquid level, gas composition, and pump performance data collected July–September 2022, with recommendations for well maintenance and replacements. It demonstrates Arbor Hills' ongoing compliance efforts to optimize the gas collection system and prevent surface emissions.
Key data point: No specific urgent temperature, CO, or violation readings in this Q3 2022 VGC report. Document is operational/management status tracking; temperature and gas monitoring data are referenced but detailed readings in Appendix D are not included in the pages provided.
2026-02-05 · Arbor Hills Landfill · evidence · routine
This is a 73-page Q1 2024 Liquid Level Report documenting leachate depths, sediment obstruction, and screen submersion percentages across dozens of vertical gas wells at Arbor Hills East and West landfill sections. The report presents technical monitoring data collected between January and March 2024, with historical measurements dating back to 2020 for comparative analysis.
Key data point: No specific factual reading (temperature, CO, contamination, violation threshold) is stated in the sampled pages. The document is purely hydrological/well-construction data without air-quality or regulatory violation metrics.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This is a Q1 2023 Vertical Gas Collection (VGC) Well Liquid Monitoring and Management Report prepared by SCS Engineers for Arbor Hills Landfill under Consent Judgment No. 2020-0593-CE. The report documents liquid levels, screen submersion percentages, pump functionality, and gas well conditions across the landfill's East and West sections, tracking compliance with quarterly reporting requirements and identifying wells requiring corrective action such as replacement, pump installation, or maintenance.
Key data point: Multiple wells with obstructed piping, stuck pumps, and submerged screens identified in Q1 2023; well replacements and pump installations recommended for 20+ wells in Arbor Hills West with deadlines ranging from May to August 2023; no specific temperature, CO, or oxygen readings in this liquid-level and well-condition document.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This is a comprehensive gas extraction and wells-of-interest report for Arbor Hills Landfill covering July through September 2023, presenting detailed temperature, methane, carbon dioxide, oxygen, carbon monoxide, and hydrogen readings across multiple monitoring wells. The document demonstrates ongoing subsurface gas conditions and the operational status of wells under the site's Higher Operating Value (HOV) waiver program.
Key data point: Multiple Wells of Interest with temperatures exceeding 131°F threshold as of May 2023; July 2023 readings include AH147AR4 at 126.2°F, AH148AR3 at 129.1–129.4°F, and AH148BR2 at 119.9–120.6°F; five WOI wells abandoned and replaced (AHWW0287, AHWW0290, AHWW0301, AHWW0302) between July 18–24, 2023; CO draeger tube readings range from 0 to 100 ppm across monitored wells in July–September 2023.
2026-02-05 · Arbor Hills Landfill · evidence · routine
This is a bi-monthly HOV (Higher Operating Value) status report for September–October 2022 covering Wells of Interest (WOI) at Arbor Hills Landfill. The report documents landfill gas monitoring, well replacement activities, carbon monoxide and hydrogen/nitrogen measurements, and continued compliance with multiple EGLE HOV approval letters dating back to May 2019.
Key data point: Well AHW259R4 measured 147 F (Jan 2022), well within the 180 F HOV limit; multiple wells show CO readings of 0–5 ppm (Sept–Oct 2022), consistent with historical data and absence of subsurface oxidation.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This document is a site plan for Arbor Hills Landfill showing the physical layout and cell designations (various cell codes like 6G, 2FM, 3FM, 4x8, etc.). It contains no quantitative measurements, regulatory findings, or factual data relevant to environmental compliance.
Key data point: No specific factual data or measurements provided.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This Q4 2022 Wells of Interest (WOI) status report from Arbor Hills Landfill documents liquid level and subsurface conditions across dozens of gas-extraction wells at both the East and West facilities. The document tracks screen submersion, obstructions, sediment, pump operations, and corrective actions required for wells with operational or structural deficiencies. No measured temperature readings above the 145°F urgent threshold are presented in the excerpted pages.
Key data point: Document shows no specific measured temperature readings in excerpted sections. Page 32 (Table 5E) lists well AHEW0L05 with pump daily average values of 93, 98, 94, 105, 108, 132, 126, 101 (units unclear from context, possibly gallons/day or temperature—unable to confirm basis).
2026-02-05 · Arbor Hills Landfill · evidence · notable
This is a Wells of Interest (WOI) status report covering March–April 2023 gas and temperature data from 16+ landfill gas extraction wells at Arbor Hills Landfill, including multiple measured temperature readings and carbon monoxide Drager tube results. The report documents subsurface conditions under the May 2019 HOV (Higher Operating Value) approval and shows well replacement and rotation activities.
Key data point: Well AHWW312R measured at 170.2°F on 6/13/2022 and 6/23/2022 (permitted HOV limit 180°F); Well AHWW0279 reached 152.5°F on 5/11/2022; carbon monoxide readings in March–April 2023 ranged from 0–30 ppm across WOI wells.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This is the Q4 2024 Consent Judgment quarterly report filed by Arbor Hills Landfill on January 30, 2025, with leachate summary data for October–December 2024 and PFAS analytical results from September 2024. The document demonstrates ongoing compliance reporting under Consent Judgment No. 2020-0593-CE.
Key data point: No measured temperature or air-quality readings in the excerpted pages; leachate volumes and PFAS detections (e.g., PFBA 11,000 ng/L, 6:2 FTSA 18,000 ng/L) reported but no exceedance thresholds stated in the provided text.
2026-02-05 · Arbor Hills Landfill · evidence · routine
This 592-page Gas Extraction Report from Arbor Hills Landfill covers January–March 2024 operational data, including detailed temperature, methane, CO2, and oxygen readings from multiple Wells of Interest (WOI), along with pump maintenance logs and monthly carbon monoxide (CO) tube readings. Temperature readings across all wells remain in the 43–124°F range, with no measured exceedances of the 145°F urgent threshold. All CO readings via Drager tube remain at or below 30 ppm, below the 35 ppm MACT limit.
Key data point: Highest measured temperature: 124.1°F (Well AH148AR3, 2024-02-01), well below 145°F urgent threshold. All CO readings ≤30 ppm (0–30 range, Drager tube). 16 WOI wells on active monitoring per HOV approval.
2026-02-05 · Arbor Hills Landfill · evidence · notable
This is the 2022 Second Semi-Annual Report filed under Consent Judgment No. 2020-0593-CE, detailing surface emission monitoring (SEM) exceedances and corrective actions at Arbor Hills Landfill for the third and fourth quarters of 2022. The report documents dozens of gas-collection well penetrations and SEM exceedances, with corrective measures including cover placement, liner repairs, and bentonite seal replacements.
Key data point: WOI well WW-306R measured at 129°F (within permitted range); multiple Q4 2022 exceedances submitted to EGLE with extension letters for 2023 remediation; WW-207R (WOI location) at 77°F with 0% O₂.
2026-02-05 · Arbor Hills Landfill · evidence · routine
This is a Q1 2023 Liquid Level Report for Arbor Hills East Vertical Gas Wells, presenting depth-to-liquid-level measurements, leachate depths, and screen submersion percentages across multiple monitoring wells collected between May 2020 and March 2023. The report tracks leachate accumulation and screen conditions across dozens of gas extraction wells at the landfill but contains no temperature, carbon monoxide, oxygen, or hazardous substance readings.
Key data point: No specific factual claim or measured reading is extractable; this is a technical data table with well construction, liquid levels, and screen submersion metrics but no regulatory violations, temperature anomalies, or air quality findings.
2026-02-05 · Arbor Hills Landfill · evidence · urgent
Arbor Hills Landfill, Inc. submitted its 2024 first semi-annual Consent Judgment report (CJ No. 2020-0593-CE) to the Michigan Department of Environment, Great Lakes, and Energy on September 13, 2024. The report covers multiple operational sections including Wells of Interest temperature and gas data (May–June 2024), corrective actions completed, and SEM (Surface Emission Monitoring) exceedances. The document presents hundreds of individual well measurements across the site's gas extraction system.
Key data point: Highest measured temperature reading: well AHWW414R at 553°F on 5/14/24 (basis appears ambiguous in raw data presentation; context indicates this is measured via HCH Meter).
2026-02-05 · Arbor Hills Landfill · evidence · urgent
This is GFL's Third Quarter 2023 (July–September) HOV WOI Status Report, submitted to EGLE in October 2023, detailing landfill gas monitoring data from 16+ Wells of Interest at Arbor Hills Landfill under multiple Higher Operating Value waivers. The report confirms ongoing waste placement, well replacements, gas-extraction infrastructure upgrades, and monthly temperature, carbon monoxide, and hydrogen/nitrogen readings across the WOI network.
Key data point: Well AHWW312R measured 158.3°F on 2023-08-29 and 157.9°F on 2023-08-29; well AHWW301R measured 138.1°F on 2023-08-04. These are measured temperatures on active HOV waivers; AHWW312R exceeds the 145F urgent threshold.
2026-02-05 · Arbor Hills Landfill · evidence · urgent
This is the 2024 First Semi-Annual Consent Judgment Report for Arbor Hills Landfill (CJ No. 2020-0593-CE), submitted to EGLE on September 13, 2024. It contains detailed gas-extraction well temperature and operational data from January–June 2024, corrective-action completion records, and SEM (surface emission monitoring) exceedance analyses. The report certifies compliance with multiple reporting sections under the Consent Judgment.
Key data point: Highest measured temperature: AHWW414R at 553°F on 5/14/24 (349°F above MACT limit of 204°F). Multiple wells operating under Higher Operating Value (HOV) waivers; dozens of wells >200°F in H1 2024.
2026-02-05 · Arbor Hills Landfill · procedural · routine
This is the 2024 Supplemental Environmental Projects (SEP) Annual Report filed by Arbor Hills Landfill under Consent Judgment 2020-0593-CE, documenting compliance with three SEP requirements: perimeter emissions monitoring (6 Scentroid stations monitoring H₂S and methane), a household hazardous waste facility (operational since October 2023), and vegetative buffer plantings (132 spruce trees across two phases). The document includes expenditure certifications and invoices for leachate water disposal.
Key data point: Arbor Hills spent $547,000 in 2024 to operate and maintain 6 perimeter emissions monitoring stations installed in 2022 on the east side of the landfill west of Napier Road; to date over $1.3 million has been spent on this system under Consent Judgment 2020-0593-CE.
2026-02-05 · Arbor Hills Landfill · evidence · urgent
This is a 77-page Wells of Interest (WOI) Status Report from Arbor Hills Landfill documenting gas composition and subsurface temperature data from multiple monitoring wells during 2022–2023. The report includes quarterly CO and hydrogen readings via Drager tubes, detailed well-head gas analysis (methane, CO2, oxygen percentages), and temperature measurements tracking the site's elevated-temperature landfill (ETLF) condition.
Key data point: Well AHWW312R measured 170.2°F on multiple dates in June–July 2022 (35.2°F above the 135°F baseline MACT limit), with HOV 180°F waiver notation; Well AHWW0300 measured 154.4°F in June 2022 (19.4°F above MACT limit); Well AHWW285R measured 157.3°F on 5/31/2022 (22.3°F above MACT).