1. Environmental Monitoring & Protection Unit
Sewers By-law (Toronto Municipal Code Chapter 681) and Outfall Monitoring Program
David Trieu
City of Toronto
Toronto Water
Environmental Monitoring & Protection Unit
November 4, 2013

2. 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)

3. WHO 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 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

4. Environmental Monitoring & Protection
Sewers Bylaw
Compliance & Monitoring
(Industrial / Commercial /
Institutional)
Backflow Prevention
Program
(Water Supply Bylaw)
Enforcement
(Courts)
Pollution Prevention
Program
Environmental Monitoring
& Protection
Block 2 Industrial
Water Rate Program
(Compliance End)
Spills/Complaints
24/7 coverage
Outfall Monitoring
Program
Manage & Create
Agreements under
Sewers Bylaw
Monitoring Toronto Beaches,
Special Monitoring Projects
Staff Reports
to Committees
Training
Technical Advice
(Road Salt)
Transportation
Public Outreach
All TW, TPH,
Legal, PPFA
Day to Day Core Activities
- Required 4 4

5. 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.

6. 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

7. 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

8. 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

9. OUTFALL 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 maps
HOW DOES THE OMP WORK?
There are 6 key steps in this program

10. 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

11. STEP 2: CLASSIFICATION OF OUTFALLS
Outfalls are classified as either Priority, Concern, or Interest using sample results.
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)

12. STEP 4: POLLUTION SOURCE INSPECTIONS
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

13. STEP 6: DELISTING PRIORITY OUTFALLS
STEP 5: ENFORCEMENT
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 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.

14. OUTFALL MONITORING PROGRAM STATISTICS
Since start of the OMP in late 2005 to 2012
2,631 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

15. Thank you!
Any Questions?