2017 National Pollutant Release Inventory (NPRI) Report

Transcription

1 2017 National Pollutant Release Inventory (NPRI) Report City of London s Environmental and Engineering Services Division June 5, 2018 Page 1 of 14

2 Table of Contents 2017 NPRI... 3 Brief explanatory notes on compounds listed in this report... 3 City Of London NPRI Emission Summary Releases... 5 City Of London NPRI Emission Summary Disposal... 6 City Of London NPRI Emission Summary Total of Releases & Disposals... 7 Summary Report: Adelaide... 9 Report Details... 9 Substances Inventory... 9 Summary Report: Greenway Report Details Substance Inventory Summary Report: Oxford Report Details Substances Inventory Summary Report: Pottersburg Report Details Substances Inventory Summary Report: Vauxhall Report Details Substance Inventory Summary Report: W12A Landfill Report Details Substance Inventory Page 2 of 14

3 2017 NPRI NPRI data is used on some web sites to identify the "largest polluters". The listing of a quantity in total tonnes does little to differentiate between contaminants and their effects on the environment and actually masks contaminants with lower reporting thresholds such as dioxins (measured in grams), mercury and arsenic (measured in kilograms). Sewage treatment plants and landfills are operated by the City on behalf of and for the betterment of the community. "Environmental degradation" is greatly reduced when the systems are in place to handle liquid and solid wastes from residences and businesses. While the municipality strives to improve performance on an ongoing basis, municipal facilities are not the source of these pollutants and pollution prevention best begins at source with the individuals and businesses that use these services. Brief explanatory notes on compounds listed in this report The NPRI data is broken down into Releases (discharges to the environment) and Disposal (material captured and put into landfills or other final treatment methods). The largest tonnage compound reported from the sewage treatment plants is Nitrate (1,080 tonnes). The City of London wastewater treatment plants utilize bacteria to convert ammonia, which, in significant concentrations, is toxic to fish, to nitrates and this is called nitrification. The city sewage treatment plants convert over 98% of the ammonia to nitrates. Ammonia and nitrates are nutrients and are used to fertilize farms and gardens. The City of London monitors nitrate levels upstream of the City on two branches of the Thames River and the average for 2017 was 5.9 mg/l. Downstream of the City the average for 2017 was 6.2 mg/l. The implications are that the nitrates are not above drinking water criterion. There is no Ontario surface water criterion for nitrates but a CCME criterion is 2.9 mg/l. The criterion is based on Lake trout which do not spawn in rivers. Levels of nitrate in Lake Huron and Lake Erie range from 0.2 to 0.8 mg NO3-N/L based on City of London water supply data. The Maximum Acceptable Toxicant Concentration (MATC) for Rainbow trout is 8.6 mg NO3-N/L due to delay of sac fry to the swim-up stage. Rainbow trout are found in lakes, and move to rivers and streams in the spring and fall. The average concentration of nitrates in the spring and fall between 2012 and 2017 inclusive is less than 5.3 mg NO3-N/L in the Thames River entering or leaving the City of London. Levels of nitrates are below the MATC for rainbow trout. While the amount of ammonia released in 2017 is 92 tonnes from the wastewater treatment plants the average concentration over the year was 1.1 mg/l which is well below the City compliance limits of 3 to 5 mg/l. This is the residual amount of ammonia that remains after nitrification and it is low enough that it is not toxic to fish in the concentrations discharged from the City s sewage treatment plants into the river. The City s wastewater treatment plants removed 95% of phosphorous and disposed of it as ash at the City landfill in The plant has been using geotubes to dewater the ash instead of using the ash basins. The phosphorous in 2017 released into the river is 33 tonnes. Phosphorous is not toxic but is a nutrient that can enable excessive algae and plant growth. The sewage treatment phosphorous is approximately 12% of the phosphorous found in the Thames River based on annual averages. Other sources of phosphorous include agriculture and lawn fertilizer. Other parameters reported in kg include lead, arsenic, cadmium and mercury. Concentrations in the sewage plant effluent for these metals are 2 ug/l or less (parts per billion). There is little that can be done at the Page 3 of 14

4 sewage treatment plant to reduce levels further. Regulating consumer products that have trace metals would be one method of pollution prevention but this would have to be done at the federal level. An example is cadmium in bleach. Dentists have been required to install ISO certified amalgam separators to reduce mercury discharges. The W12A landfill emitted 117 tonnes of Carbon monoxide in 2017 based on emission factors from the United States Environmental Protection Agency. Ammonia from leachate sent for treatment at the Greenway Wastewater Treatment Centre was 47 tonnes. The Canadian Council of Ministers of the Environment (CCME) reported (October 2004) that there were 195 grams of Dioxins and furans discharged from 26 sector groups per year. Of the 26 sectors, incineration was responsible for 2.4% of the dioxin and furan emissions or about 4.6 ITEQ grams. This is a decrease of about 90% from numbers reported in The Incinerator sector includes municipal solid waste, hazardous waste, hospital waste, and sewage sludge. Sewage sludge incinerators accounted for 0.05 grams of Dioxins and furans or 1% of the Incinerator sector. There are 6 sewage sludge incinerators in the group and the Greenway Incinerator had the lowest dioxin and furan emissions of the group. The CCME has come out with a dioxin and furan standard for sewage sludge incinerators and Greenway emissions are below the standard. As a comparison, an October 2004 CCME report suggests that burning of domestic waste in barrels represented between 12% and 22% of the Canadian emissions of Dioxins and furans (an emission level greater than the Incineration sector). Hexachlorobenzene was not detected at the Greenway Incinerator and a value of the detection limit 0.08 ug/m 3 was used for the reported emission estimate. Page 4 of 14

5 City Of London NPRI Emission Summary Releases Location Test Weight Adelaide Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data VOC s Tonnes BT BT BT No Data Cadmium Kilograms No Data Lead Kilograms Greenway Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data VOC s Tonnes BT BT BT No Data Dioxins Grams TEQ No Data Hexachlorobenzene Grams No Data Arsenic Kilograms No Data Cadmium Kilograms No Data Lead Kilograms No Data Mercury Kilograms No Data Copper Tonnes 0.3 BT BT No Data Manganese Tonnes 0.6 BT BT No Data Zinc Tonnes No Data Particulate Tonnes 4 BT BT No Data PM10** Tonnes No Data PM2.5** Tonnes No Data Nitrogen Oxides Tonnes BT BT BT No Data Sulphur Dioxide Tonnes 16 BT BT Oxford Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes Pottersburg Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data Lead Kilograms No Data Cadmium Kilograms 1 BT BT Vauxhall Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data Lead Kilograms 5 BT BT W12A Ammonia Tonnes N/A Landfill Carbon Monoxide Tonnes No Data Total Particulate Tonnes No Data PM10 Tonnes No Data PM2.5 Tonnes BT means below threshold ** starting in 2011 includes condensable particulate Page 5 of 14

6 City Of London NPRI Emission Summary Disposal Location Test Weight Adelaide Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data Cadmium Kilograms No Data Lead Kilograms Greenway Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes 1, No Data Arsenic Kilograms No Data Cadmium Kilograms No Data Lead Kilograms 1, No Data Copper Tonnes 16 BT BT No Data Manganese Tonnes 13 BT BT No Data Zinc Tonnes No Data Dioxins Grams TEQ No Data Mercury Kilograms Oxford Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes Pottersburg Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data Lead Kilograms 26.9 BT BT No Data Cadmium Kilograms 1.0 BT BT Vauxhall Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data Lead Kilograms W12A Landfill Ammonia Tonnes BT means below threshold Page 6 of 14

7 City Of London NPRI Emission Summary Total of Releases & Disposals Location Test Weight Reporting Threshold Adelaide Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data VOC s Tonnes 10 BT BT BT No Data Cadmium Kilograms No Data Lead Kilograms Greenway Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes 10 1, No Data VOC s Tonnes 10 BT BT BT No Data Dioxins Grams No Data TEQ No Data Hexachlorobenzene Grams No Data No Data Arsenic Kilograms No Data Cadmium Kilograms No Data Lead Kilograms 50 1, No Data Mercury Kilograms No Data Copper Tonnes BT BT No Data Manganese Tonnes BT BT No Data Zinc Tonnes No Data Particulate Tonnes 20 4 BT BT No Data PM10 Tonnes No Data PM2.5 Tonnes No Data Nitrogen Oxides Tonnes 20 BT BT BT No Data Sulphur Dioxide Tonnes BT BT Oxford Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes Pottersburg Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data Lead Kg BT BT No Data Cadmium Kg BT BT BT means below threshold Page 7 of 14

8 City Of London NPRI Emission Summary Total of Releases & Disposals (continued) Location Test Weight Reporting Threshold Vauxhall Ammonia Tonnes WWTP Nitrate Tonnes No Data Phosphorus Tonnes No Data Lead Kg BT BT W12A Ammonia Tonnes Landfill PM10 Tonnes No Data PM2.5 Tonnes BT means below threshold Page 8 of 14

9 Summary Report: Adelaide NPRI ID Company Name Corporation of the City of London Facility Name Adelaide Pollution Control Plant Facility Address 1201 Adelaide Street, London (Ontario) Report Details Report Status Submitted (05/06/2018) Reporting Period 2017 Report Type Inventory (Programs: NPRI) Substance Inventory CAS RN Substance Name Releases Disposals Recycling Unit NA - 17 Nitrate ion in solution N/A N/A tonnes at ph >= 6.0 NA - 22 Phosphorus(total) N/A tonnes Page 9 of 14

10 Summary Report: Greenway NPRI ID 4743 Company Name Corporation of the City of London Facility Name Greenway Pollution Control Centre Facility Address 109 Greenside Avenue, London (Ontario) Report Details Report Status Submitted (05/06/2018) Reporting Period 2017 Report Type Inventory (Programs: NPRI) Substance Inventory CAS RN Substance Name Releases Disposals Recycling Unit Hexachlorobenzene N/A N/A grams NA - 03 Cadmium (and its N/A kg compounds) NA - 08 Lead (and its N/A kg compounds) NA - 10 Mercury (and its N/A kg compounds) NA - 14 Zinc (and its N/A tonnes compounds) NA - 16 Ammonia (total) N/A tonnes NA - 17 Nitrate ion in N/A tonnes solution at ph >= 6.0 NA - 22 Phosphorus (total) N/A tonnes NA - D/F Dioxins and furans - total NI g TEQ(ET) NA - M09 PM10-Particulate N/A N/A tonnes Matter NA - M10 PM2.5-Particulate N/A N/A tonnes Matter NA - 02 Arsenic (and its N/A kg compounds) NA 09 Manganese (and its N/A tonnes compounds) NA 06 Copper (and its compounds) N/A tonnes Page 10 of 14

11 Summary Report: Oxford NPRI ID Company Name Corporation of the City of London Facility Name Oxford Pollution Control Plant Facility Address 1570 Oxford Street West, London (Ontario) Report Details Report Status Submitted (05/06/2018) Reporting Period 2017 Report Type Inventory (Programs: NPRI) Substance Inventory CAS RN Substance Name Releases Disposals Recycling Unit NA - 17 Nitrate ion in solution N/A N/A tonnes at ph>= 6.0 Page 11 of 14

12 Summary Report: Pottersburg NPRI ID Company Name Corporation of the City of London Facility Name Pottersburg Pollution Control Plant Facility Address 1141 Hamilton Road, London (Ontario) Report Details Report Status Submitted (05/06/2018) Reporting Period 2017 Report Type Inventory (Programs: NPRI) Substance Inventory CAS RN Substance Name Releases Disposals Recycling Unit NA - 17 Nitrate ion in solution N/A N/A tonnes at ph >= 6.0 NA - 22 Phosphorus (total) N/A tonnes Page 12 of 14

13 Summary Report: Vauxhall NPRI ID Company Name Corporation of the City of London Facility Name Vauxhall Pollution Control Plant Facility Address 54 Price Street, London (Ontario) Report Details Report Status Submitted (05/06/2018) Reporting Period 2017 Report Type Inventory (Programs: NPRI) Substance Inventory CAS RN Substance Name Releases Disposals Recycling Unit NA - 17 Nitrate ion in N/A N/A tonnes solution at ph >= 6.0 NA - 22 Phosphorus (total) N/A tonnes Page 13 of 14

14 Summary Report: W12A Landfill NPRI ID 5790 Company Name Corporation of the City of London Facility Name W12A Landfill Facility Address 3502 Manning Drive, London (Ontario) Report Details Report Status Submitted (05/06/2018) Reporting Period 2017 Report Type Inventory (Programs: NPRI) Substance Inventory CAS RN Substance Name Releases Disposals Recycling Unit NA - 16 Ammonia (total) N/A N/A tonnes Carbon monoxide N/A N/A tonnes NA - M09 PM10-Particulate N/A N/A tonnes Matter NA - M10 PM2.5-Particulate Matter N/A N/A tonnes Page 14 of 14