Presentation on theme: "Environmental Monitoring & Protection Unit"— Presentation transcript:
1Environmental Monitoring & Protection Unit Sewers By-law (Toronto Municipal Code Chapter 681) and Outfall Monitoring ProgramDavid TrieuCity of TorontoToronto WaterEnvironmental Monitoring & Protection UnitNovember 4, 2013
2AGENDA 1)Who we are and primary duties 2)Industrial Waste Control Group (IWC)3)Stormwater Quality Group (SQG)4)Sewers By-law6)Outfall Monitoring Program (OMP)
3WHO WE ARE: 51 Staff Members Management, Engineer, Support Staff & Field Officers (Provincial Offences Officers)3 Key Sections:Industrial Waste Control Group:15 areas within the City24/7 Spill & Complaint ResponseStormwater Quality Group:6 Tributary Watersheds and Lake OntarioBackflow Prevention Group:Ensures 30,000 industries in Toronto have valid BFP devices
5INDUSTRIAL WASTE CONTROL GROUP Enforce Sewers and Water Supply By-law – 15 areas within the CityMonitor Industrial discharges & on-site Pollution Prevention (P2) plansIndustrial Waste Surcharge & Sanitary Discharge AgreementsRespond to water pollution complaints, industrial-commercial spills.
6STORM QUALITY GROUP Outfall Monitoring Program Monitor storm outfall dischargesBeach & Lake water quality monitoringStormwater complaint investigationsSpecial Stormwater projectsInner Harbour MonitoringEnvironmental Assessment Monitoring
7SEWERS BY-LAW OBJECTIVES: Reduce chemicals going to sewers, to help protect Lake Ontario & Toronto’s Rivers and streams & wastewater treatment plantsTo regulate the quality of storm and sanitary discharges into City’s storm & sanitary sewersTo ensure that sewage sent to treatment plants is treatable and to continuously improve bio-solids qualityEnvironmental protection and long-term health of receiving watersComply with Federal and Provincial legislation
8SEWERS BY-LAW HIGHLIGHTS: Contains Discharge Limits and requirements for the Sanitary, Combined, and Storm SewersPollution Prevention Plan RequirementsWaste Surcharge and Sanitary Discharge Agreements, Industry Compliance ProgramsRight of Entry for OfficersSpill Reporting RequirementsPenalties and Fines
9OUTFALL MONITORING PROGRAM (OMP) OBJECTIVES:Program initiated in late 2005.To locate and survey all outfalls within Toronto.To sample all outfalls with a dry weather flow.To identify contaminated stormwater flows.Initiate remedial and or enforcement action to eliminate the sources of contamination under authority of the Sewers By-law.Update city mapsHOW DOES THE OMP WORK?There are 6 key steps in this program
10STEP 1: SURVEYING AND SAMPLING Outfalls are the exit points of the storm sewer system for drainage of surface runoff (ie rain, snowmelt)Each individual watershed is surveyed for all Outfalls, defined as any pipe greater than 10 cm.Each surveyed outfall with dry weather flow is sampled at least twice. During this phase, 2 rounds are sampled.Sampling Parameters may include: E. coli, TSS, pH, BOD, Metals, Total Phosphorus, TKN and Phenols.Other parameters can also be sampled and tested at the discretion of the investigating Officer
11STEP 2: CLASSIFICATION OF OUTFALLS Outfalls are classified as either Priority, Concern, or Interest using sample results.STEP 3: INVESTIGATE PRIORITY OUTFALLSPriority Outfalls are actively investigated and sampledPollution source tracing is done from the outfall, going upstream through the storm sewerStrategic storm manhole points are inspected and compared to each otherAreas of higher pollutant concentration indicate proximity to the source (Narrowed down to be in between two manholes)
12STEP 4: POLLUTION SOURCE INSPECTIONS Property inspections begin once the source has been narrowed down to be in between two manholesAll properties in between those two manholes are flagged for inspection and are issued dye test lettersPollution sources can come from cross connected properties or through illegal dumping/discharge into catch basinsA cross connection is an illegal sanitary plumbing fixture connected to the storm sewer lineOther potential sources of pollution include sewer infrastructure problemsMain test methods include; non toxic dye testing the property and video testing the storm sewer lines
13STEP 6: DELISTING PRIORITY OUTFALLS STEP 5: ENFORCEMENTStepwise enforcement (cross connections properties)Property owners are issued verbal warnings not to use the cross connected fixtures until the problem is rectified.Property owners are issued by mail, written Notices of Violation, indicating they are in breach of the Sewers By-law.Legal action taken and issue fines, if necessarySTEP 6: DELISTING PRIORITY OUTFALLSAfter Priority Outfalls are thoroughly investigated they can be delisted to Outfalls of Interest, if the water quality has improved.This requires obtaining 3 clean samples from routine monitoring and sampling at the outfall.A clean sample is defined as having the attributes of an Outfall of Interest.
14OUTFALL MONITORING PROGRAM STATISTICS Since start of the OMP in late 2005 to 20122,631 Total Outfalls SurveyedTaylor Massey Creek (TMC), Black Creek, Rouge River, Etobicoke Creek, Humber River, Highland Creek, Mimico Creek and Lake Ontario completely surveyed.634 cross connections found (including infrastructure problems and multi-unit buildings)592 cross connections corrected (inc. infrastructure problems and multi-unit buildings)70 Delisted Priority Outfalls (23 in TMC)100 Priority Outfalls were under investigation (31 in TMC)The year, the Don River has been surveyed and being sampledCity staff reports with further details available online to the public