2019 Annual Report, Gull Lake Waste Disposal Site (Closed)
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2019 Annual Report, Gull Lake Waste Disposal Site (Closed) Environmental Compliance Approval No. A380204 March 20, 2020 Prepared for: The Corporation of the Township of North Frontenac © Cambium 2019 Reference No.: 8560-009 CAMBIUM INC. 866.217.7900 cambium-inc.com Peterborough |Barrie | Oshawa | Kingston 2019 Annual Report, Gull Lake Waste Disposal Site (Closed) The Corporation of the Township of North Frontenac Cambium Ref. No.: 8560-009 March 20, 2020 Executive Summary The Gull Lake Waste Disposal Site operates under the Ministry of the Environment, Conservation and Parks Environmental Compliance Approval No. A380204. The site is on part of Lot 13, Concession 1, geographic Barrie Township, Township of North Frontenac, County of Frontenac. The site is accessed at 1651 Gull Lake Road and is 3.0 km east of the village of Harlowe and 300 m south east of Big Gull Lake. The site is closed and contains approximately 3,400 m³ of waste. The waste footprint covers approximately 0.25 ha within a 4.96 ha property. Impacted groundwater is interpreted to percolate through the waste, contact the competent bedrock, and migrate westerly, discharging into the low-lying wetland area surrounding the waste mound. The results of the groundwater and surface water sampling programs indicated the presence of landfill impacts adjacent the toe of the waste mound. Regardless of minor impacts observed, most parameter concentrations met the compliance criteria indicating adverse impacts were not occurring to the surface water receptor immediately adjacent the waste mound. Further, due to the geographic separation of where leachate is discharged to surface at the site and Big Gull Lake, observed impacts will be attenuated before the surface water enters Big Gull Lake. No operational issues were identified during site inspections. Well MW3 was compliant with R.R.O. 1990 Regulation 903: Wells and the final cover was vegetated with no seeps or erosion. The Township of North Frontenac managed the site in compliance with the Environmental Compliance Approval in 2019. Recommendations have been made regarding the future operation of the Gull Lake (Closed) waste disposal site and work to be completed at the site in 2020, including reductions in the monitoring and reporting requirements. Cambium Inc. Page i 2019 Annual Report, Gull Lake Waste Disposal Site (Closed) The Corporation of the Township of North Frontenac Cambium Ref. No.: 8560-009 March 20, 2020 Table of Contents 1.0 Introduction .......................................................................................................1 1.1 Site Location ................................................................................................................ 1 1.2 Scope of Work ............................................................................................................. 1 1.3 Site Description ........................................................................................................... 2 2.0 Methodology .....................................................................................................3 2.1 Groundwater Monitoring Program ............................................................................... 3 2.2 Surface Water Monitoring Program ............................................................................. 4 2.3 Landfill Gas Monitoring ................................................................................................ 5 2.4 Site Inspection ............................................................................................................. 6 3.0 Geological and Hydrogeological Context ......................................................7 3.1 Topography and Drainage ........................................................................................... 7 3.2 Hydrogeology .............................................................................................................. 9 3.3 Conceptual Model ..................................................................................................... 10 4.0 Results and Discussion ................................................................................ 11 4.1 Quality Assurance and Control .................................................................................. 11 4.2 Groundwater Quality ................................................................................................. 12 4.2.1 Compliance Assessment ........................................................................................... 12 4.3 Surface Water Quality ............................................................................................... 13 4.4 Adequacy of Monitoring Program .............................................................................. 13 5.0 Site Inspection ............................................................................................... 15 5.1 Site Access and Security ........................................................................................... 15 5.2 Site Inspections ......................................................................................................... 15 5.2.1 Drainage .................................................................................................................... 15 5.2.2 Final Cover Integrity .................................................................................................. 15 5.3 Complaints and Incidents .......................................................................................... 15 5.4 Monitoring Well Security ............................................................................................ 16 5.5 Compliance with Ministry Approval ............................................................................ 16 Cambium Inc. Page iii 2019 Annual Report, Gull Lake Waste Disposal Site (Closed) The Corporation of the Township of North Frontenac Cambium Ref. No.: 8560-009 March 20, 2020 6.0 Conclusions and Recommendations .......................................................... 17 References ................................................................................................................... 18 Glossary of Terms ....................................................................................................... 20 List of Embedded Tables Embedded Table 1 Site Details ............................................................................................... 2 Embedded Table 2 Surface Water sampling Observations and Locations ............................. 8 Embedded Table 3 Historical and 2019 Precipitation Data ..................................................... 8 Embedded Table 4 Surface Water QA/QC Evaluation ........................................................... 11 List of Appended Figures Figure 1 Regional Location Plan Figure 2 Local Topography Plan Figure 3 Site Plan List of Appended Tables Table 1 Monitoring Program Table 2 Summary of Water Quality List of Appendices Appendix A Environmental Compliance Approval Appendix B Field Sheets Appendix C Laboratory Certificates of Analysis Appendix D Photographs Cambium Inc. Page iv 2019 Annual Report, Gull Lake Waste Disposal Site (Closed) The Corporation of the Township of North Frontenac Cambium Ref. No.: 8560-009 March 20, 2020 1.0 Introduction Cambium Inc. (Cambium) was retained by the Corporation of the Township of North Frontenac (Township) to complete the 2019 annual monitoring program at the Gull Lake Waste Site (Site). The Site is governed under the Ministry of the Environment, Conservation and Parks (Ministry) Environmental Compliance Approval (ECA) No. A380204 (Appendix A). To aid in understanding the Site history and development, the following reports are included digitally in the report package: Hydrogeological Investigation & Closure Plan, Gull Lake Dump (OMMA , 1994) Gull Lake Waste Disposal Site, Preliminary Assessment & Closure Plan (AECOM, 2013) 1.1 Site Location The Site is on part of Lot 13, Concession 1, geographic Barrie Township, Township of North Frontenac (Township), County of Frontenac. The Site address is 1651 Gull Lake Road and is 3.0 km east of the village of Harlowe (Figure 1). The Universal Transverse Mercator (UTM) coordinates for the Site entrance are Zone 18T, 338263m east, 4963332m north. 1.2 Scope of Work The scope of the work conducted for the 2019 monitoring program was based on the results of the 2018 program (Cambium, 2019), the requirements of Condition 6.0 of the ECA, and included: Groundwater and surface water sampling and analysis Analysis of the data generated from the groundwater and surface water sampling program Data interpretation, reporting, and providing a statement on the status of Site compliance Cambium Inc. Page 1 2019 Annual Report, Gull Lake Waste Disposal Site (Closed) The Corporation of the Township of North Frontenac Cambium Ref. No.: 8560-009 March 20, 2020 1.3 Site Description The Site is a natural attenuation landfill, owned by the Township, and was closed consistent with ECA No. A380204. Site specific details are in Embedded Table 1, a Local Topography Plan is attached as Figure 2, and a Site Plan is attached as Figure 3. Embedded Table 1 Site Details Total Site Area 4.96 ha Approved Area of Refuse Placement 0.25 ha Total Site Capacity, not including Final Cover 3,400 m³ Upon recommendations from Oliver, Mangione, McCalla and Associates (OMMA) the Site was closed in 1991. The recommendations for closure were resultant from the Site’s proximity to surface water and a public roadway. Upon