Presentation on theme: "David Trieu City of Toronto Toronto Water Environmental Monitoring & Protection Unit November 4, 2013 Sewers By-law (Toronto Municipal Code Chapter 681)"— Presentation transcript:
David Trieu City of Toronto Toronto Water Environmental Monitoring & Protection Unit November 4, 2013 Sewers By-law (Toronto Municipal Code Chapter 681) and Outfall Monitoring Program
AGENDA 1)Who we are and primary duties 2)Industrial Waste Control Group (IWC) 3)Stormwater Quality Group (SQG) 4)Sewers By-law 6)Outfall Monitoring Program (OMP)
51 Staff Members Management, Engineer, Support Staff & Field Officers (Provincial Offences Officers) 3 Key Sections: Industrial Waste Control Group: 15 areas within the City 24/7 Spill & Complaint Response Stormwater Quality Group: 6 Tributary Watersheds and Lake Ontario Backflow Prevention Group: Ensures 30,000 industries in Toronto have valid BFP devices WHO WE ARE:
Sewers Bylaw Compliance & Monitoring (Industrial / Commercial / Institutional) Technical Advice (Road Salt) Transportation All TW, TPH, Legal, PPFA Training Public Outreach Enforcement (Courts) Pollution Prevention Program Monitoring Toronto Beaches, Special Monitoring Projects Backflow Prevention Program ( Water Supply Bylaw ) Environmental Monitoring & Protection Spills/Complaints 24/7 coverage Block 2 Industrial Water Rate Program (Compliance End) Manage & Create Agreements under Sewers Bylaw Staff Reports to Committees Outfall Monitoring Program -Day to Day Core Activities - Required
INDUSTRIAL WASTE CONTROL GROUP Enforce Sewers and Water Supply By-law – 15 areas within the City Monitor Industrial discharges & on-site Pollution Prevention (P2) plans Industrial Waste Surcharge & Sanitary Discharge Agreements Respond to water pollution complaints, industrial-commercial spills.
STORM QUALITY GROUP Outfall Monitoring Program Monitor storm outfall discharges Beach & Lake water quality monitoring Stormwater complaint investigations Special Stormwater projects Inner Harbour Monitoring Environmental Assessment Monitoring
SEWERS BY-LAW OBJECTIVES: Reduce chemicals going to sewers, to help protect Lake Ontario & Toronto’s Rivers and streams & wastewater treatment plants To regulate the quality of storm and sanitary discharges into City’s storm & sanitary sewers To ensure that sewage sent to treatment plants is treatable and to continuously improve bio-solids quality Environmental protection and long-term health of receiving waters Comply with Federal and Provincial legislation
SEWERS BY-LAW HIGHLIGHTS: Contains Discharge Limits and requirements for the Sanitary, Combined, and Storm Sewers Pollution Prevention Plan Requirements Waste Surcharge and Sanitary Discharge Agreements, Industry Compliance Programs Right of Entry for Officers Spill Reporting Requirements Penalties and Fines
OUTFALL MONITORING PROGRAM (OMP) OBJECTIVES: Program initiated in late 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 maps HOW DOES THE OMP WORK? There are 6 key steps in this program
STEP 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
STEP 3: INVESTIGATE PRIORITY OUTFALLS Priority Outfalls are actively investigated and sampled Pollution source tracing is done from the outfall, going upstream through the storm sewer Strategic storm manhole points are inspected and compared to each other Areas of higher pollutant concentration indicate proximity to the source (Narrowed down to be in between two manholes) STEP 2: CLASSIFICATION OF OUTFALLS Outfalls are classified as either Priority, Concern, or Interest using sample results.
Property inspections begin once the source has been narrowed down to be in between two manholes All properties in between those two manholes are flagged for inspection and are issued dye test letters Pollution sources can come from cross connected properties or through illegal dumping/discharge into catch basins A cross connection is an illegal sanitary plumbing fixture connected to the storm sewer line Other potential sources of pollution include sewer infrastructure problems Main test methods include; non toxic dye testing the property and video testing the storm sewer lines STEP 4: POLLUTION SOURCE INSPECTIONS
Stepwise 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 necessary STEP 5: ENFORCEMENT STEP 6: DELISTING PRIORITY OUTFALLS After 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.
OUTFALL MONITORING PROGRAM STATISTICS Since start of the OMP in late 2005 to ,631 Total Outfalls Surveyed Taylor 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 sampled City staff reports with further details available online to the public