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- Applying Ontario’s Environmental Protection Act to GE
- Monitoring PCBs in GE’s Groundwater and Stormwater
- Questions about GE’s Private Stormwater System
- Findings
- Licence
Applying Ontario’s Environmental Protection Act to GE
In 2024, the Ministry of the Environment, Conservation and Parks (MECP) used four (partially overlapping) instruments under Ontario’s Environmental Protection Act (1990) to regulate GEPR Energy Canada’s (GE’s) properties in Peterborough, ON:
- Director’s Order GE-PTBO-DO001FA, dated December 10, 2018; revoked March 2024 and replaced by:
- Director’s Order 1-228916698, dated March 6, 2024
- Director’s Instructions for Interim PCB Waste Management — Monaghan Road, dated June 21, 1995; revoked May 2024 and replaced by Director’s Order 1-228916698, Appendix A: Requirements for the In-Situ Management of PCB-impacted Soils at the Monaghan Road Parking Lot on Site 2
- ECA 8032-BEJNAK, dated September 30, 2019.
Director’s Order 1-228916698 applies to two Sites on GE’s properties:
- “Site 1” means the property with two municipal addresses of 107 Park Street and 1160 Monaghan Road, Peterborough, ON with the following Property Identifier Number 28081-0123.
- “Site 2” means the property with two municipal addresses of 1063 and 1091 Monaghan Road, Peterborough, ON with the following Property Identifier Number 28067-0046.
Director’s Order GE-PTBO-DO001FA, dated December 10, 2018, covered two additional GE properties, until March 6, 2024:
- “Site 3” means the property located at 297 Rink Street, Peterborough, ON with the following Property Identifier Number 28091-0139.
- “Site 4” means the property located at 107 Rubidge Street, Peterborough, ON with the following Property Identifier Number 28091-0137.
Director’s Instructions for Interim PCB Waste Management – Monaghan Road covered Site 2, until May 8, 2024.
The MECP agreed to GE’s request that Site 3 and Site 4 be excluded from Director’s Order 1-228916698.1“On March 16, 2023, GEPR requested that Site 3 and Site 4 be removed from this Director’s Order. Those two properties were included in the previous order as there are monitoring wells located on them that are part of the Site monitoring program. However, the monitoring wells are being replaced with new monitoring wells to be located on adjacent off-property locations by GEPR, which is acceptable to the Ministry, and therefore it is appropriate to remove them as reflected in this Order.” Ministry of the Environment, Conservation and Parks, Director’s Order 1-228916698, March 6, 2024, p. 6. The 2024 PCB Monitoring Report for Stormwater and Groundwater prepared by GE’s consultant, AECOM Canada ULC (AECOM), included findings for Site 3 and Site 4 per Director’s Order GE-PTBO-DO001FA, and findings for Site 2 per the 1995 Director’s Instructions.
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Monitoring PCBs in GE’s Groundwater and Stormwater
Director’s Order 1-228916698 identifies polychlorinated biphenyls (PCBs) as one of two primary contaminants of concern associated with Site 1 and Site 2 – the other being trichloroethylene (TCE) and its degradation compounds, such as dichloroethylene and vinyl chloride:
The main concern regarding potential off-site environmental impacts associated with the PCB contamination at the Site is for PCB molecules to be transported off-site via water discharges into the municipal storm water sewer system which flows eastward along Rink Street and discharges into Little Lake and the Otonabee River.
Little Lake and the Otonabee River also subject to recreational water activities, and exposure to PCB contaminated waters and sediment may represent a human health risk. PCBs also transfer up the ecological food chain to other aquatic, terrestrial and avian species within which the contaminants may bioaccumulate and result in ecological impacts. As such, further inputs of PCBs to Little Lake and the Otonabee River system should be mitigated.
Various studies have shown that deposits of PCB contaminated sediments are present in Little Lake and further downstream along the Otonabee River and in Rice Lake, which the Otonabee flows into, located approximately 20 kilometres south of the City of Peterborough.
Studies have shown that PCBs are present within the tissues of sport fish collected from the Otonabee River and Rice Lake at concentrations that have caused fish consumption advisories to be issued and which should be followed for the protection of human health; refer to the MECP’s online ‘Guide to Eating Ontario Fish’. The Hiawatha First Nation community is located on the north shore of Rice Lake and community members, as well as other sport fishers, consume fish from the lake. …
In regard to the PCB storm water sewers (water and sediment) and groundwater monitoring programs, MECP Eastern Region Technical Support Section reviews annual monitoring reports and provides comments that are reviewed with GEPR to guide further monitoring activities and site management actions. The reviews to date have recommended continuation of the ongoing monitoring program.
Considering the long-term and wide-spread nature of the PCB contamination at the Site, and the ongoing instances of PCB contaminant concentrations in storm water discharges from the Site, it is expected that the PCB monitoring program will continue to be required of GEPR for many years to monitor the effectiveness of its actions to control, prevent and mitigate PCB discharges from the Site to the natural environment.2Ministry of the Environment, Conservation and Parks, Director’s Order 1-228916698, March 6, 2024, pp. 8, 11.
Details of GE’s program for monitoring PCBs in the groundwater and stormwater include:3See Director’s Order 1-228916698, Appendix B, Table 1: Groundwater Monitoring and Sampling Program, Table 3: Storm Sewer Monitoring Program, Figure 1A: Groundwater Monitoring and Sampling Location PCB at Facility, Figure 1B: Groundwater Monitoring and Sampling Location PCB at Monaghan Road Parking Lot, and Figure 3: Storm Water Monitoring Locations.
- Groundwater monitoring
- Site 1: 3 monitoring wells
- Site 2: 7 monitorong wells
- Monitoring wells are sampled for Total PCB one time per year in the spring.
- Monitoring includes measuring groundwater levels.
- Stormwater monitoring
- Site 1: 13 outfalls
- Site 2: 4 outfalls
- City of Peterborough: 5 manholes
- Little Lake: sample taken 15 m from culvert inlet
- Most storm sewer outfalls, including 3 City of Peterborough storm sewer manholes, are sampled three times per year during or immediately following a rain event (10 mm).
- City of Peterborough manhole (MH135703), located near the intersection of George and Rink Streets, is sampled six times per year.
- Where present, stormwater will be sampled for Total PCB (including Aroclors) and Total Suspended Solids (TSS).
- Where present, sediment will be sampled for Total PCB and TSS and its thickness measured.
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Questions about GE’s Private Stormwater System
AECOM’s documentation of its monitoring of PCB raises a critical question about whether GE’s private stormwater system somehow connects to the City’s public stormwater system.
On the one hand, AECOM’s 2024 PCB Monitoring Report for Stormwater and Groundwater (Appendix K: Storm Sewer Data Summary) makes no mention of any connection between the two systems. AECOM usually remarks that the run-off of rainwater from different Zones of GE’s properties “feeds” or “flows toward” the City’s stormwater system:
- Zone 1 “feeds the municipal storm sewer [STM.MH136551] on Wolfe Street, located north of the Site [1]”
- Zone 2 “feeds the municipal storm sewer [STM.MH135683] on Park Street, located east of the Site [1]”
- Zone 3 “feeds the municipal storm sewer on Albert Street. located south of the Site [1] … all of which flow towards City storm sewer MH135686”
- Zone 4 “feeds the municipal storm sewers on Monaghan Road and Frank Street, located east and south of the Monaghan Road Property [Site 2]”
- Zone 5 “feeds the municipal storm sewer on Monaghan Road [Site 2] … Some of the surface water from this area flows overland toward city CBs located on Monaghan Road. In 2016, MH166902 was established as the outfall monitoring location for Zone 5 … [and] collects stormwater drainage from Zone 5 and parts of Monaghan Road”
- Zone 6 “feeds the municipal storm sewer on Rubidge and Townsend Street [Site 4] … All the water flows toward the STM.MH135686”
- Zone 7 feeds the municipal storm sewer on Rubidge Street [Site 3] … All the water flows toward the STM.MH135686″
On the other hand, AECOM’s Storm Sewer Monitoring Program seems to indicate that 15 of the 17 outfalls from Site 1 and Site 2 actually connect to the City’s stormwater system. AECOM puts asterisks beside two outfalls (CBR140 and CBR142) in Table 3 to indicate “Catch basin not connected to City storm sewer system. These locations will be monitored but will not be considered representative of storm water outfall from Site.”4Director’s Order 1-228916698, Appendix B, Table 3: Storm Sewer Monitoring Program.
The question of whether GE’s private stormwater system connects to Peterborough’s public stormwater system seems critical to evaluating the efficacy of GE’s program for monitoring PCB in the stormwater. Accordingly, I have sought clarification from the Director, Peterborough District Office, MECP.
According to AECOM’s 2024 PCB Monitoring Report for Stormwater and Groundwater, GE’s private stormwater system includes at least 162 catchbasins and manholes at Site 1 and Site 2 [p. ii]. AECOM’s maps of the Zones/Catchment Areas/Sub-catchment Areas associated with Site 1 and Site 2 in Appendix K refer to multiple features of GE’s stormwater system, including:
- Storm Sewer Catchbasin
- Decommissioned Storm Sewer Catchbasin
- Storm Sewer Catchbasin – Below Water Table
- Storm Sewer Manhole
- Storm Sewer Manhole – Below Water Table
- Storm Sewer – Below Water Table
- Storm Sewer System (Underground)
- Storm Sewer System (Overhead)
- Inspected Sewer Pipe
- Damaged Sewer Pipe
- Jellyfish System
The MECP has provided low-resolution, grayscale copies of these maps to the Canadian Environmental Law Association. Unfortunately, these images obscure many of features of GE’s stormwater system. I have asked the Director, Peterborough District Office, MECP for help in obtaining the higher-resolution, colour images copies of AECOM’s original submission of Appendix K.
Findings
Forthcoming.
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Licence
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- 1“On March 16, 2023, GEPR requested that Site 3 and Site 4 be removed from this Director’s Order. Those two properties were included in the previous order as there are monitoring wells located on them that are part of the Site monitoring program. However, the monitoring wells are being replaced with new monitoring wells to be located on adjacent off-property locations by GEPR, which is acceptable to the Ministry, and therefore it is appropriate to remove them as reflected in this Order.” Ministry of the Environment, Conservation and Parks, Director’s Order 1-228916698, March 6, 2024, p. 6. ↩︎
- 2Ministry of the Environment, Conservation and Parks, Director’s Order 1-228916698, March 6, 2024, pp. 8, 11. ↩︎
- 3See Director’s Order 1-228916698, Appendix B, Table 1: Groundwater Monitoring and Sampling Program, Table 3: Storm Sewer Monitoring Program, Figure 1A: Groundwater Monitoring and Sampling Location PCB at Facility, Figure 1B: Groundwater Monitoring and Sampling Location PCB at Monaghan Road Parking Lot, and Figure 3: Storm Water Monitoring Locations. ↩︎
- 4Director’s Order 1-228916698, Appendix B, Table 3: Storm Sewer Monitoring Program. ↩︎
