E D M O N T O N. Edmonton Wastewater Source Control Program

Transcription

1 Edmonton Wastewater Source Control Program 1

2 Source Control Program To Protect City sewer collection system To protect GB Wastewater Treatment Plant To protect quality of biosolids To protect environment and public health 2

3 Agenda Edmonton sewer system Edmonton Sewers Use Bylaw and Sewers Bylaw Compliance Program Surcharge Program Special Projects 3

4 Drainage Infrastructure $14.6 Billion as of km of sewer line 140 storm water management facilities 235 storm outfalls 43 peak storage units 70 pump wells 1 advanced WWTP 4

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6 6 From King County, WA

7 Wastewater CSO Stormwater Total Load River Impacts 7

8 So What? We must protect this valuable asset. We must protect NS River. Otherwise 8

9 WWTP Upset Sewage flow into river without proper treatment Contaminated biosolids Odour complaints 9

10 Sewer Explosion Louisville

11 Guadalajara Dead 11

12 Winnipeg July

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15 Control of Harmful Discharges FLAMMABLE EXPLOSIVE CORROSIVE TOXIC HIGH CONCENTRATIONS LARGE VOLUMES 15

16 Organization Regulatory Services General Supervisor Administrative Assistant Senior Engineer Compliance Supervisor Surcharge Supervisor Investigators (8) Inspector (2) 16

17 Sewers Bylaw #9425 Sewers Use Bylaw #

18 Sewers Use Bylaw #9675 To regulate the release of wastewater from any source to the City sewer system. To specify the various sewer service charges and overstrength surcharges. Wastewater release limits specified in Schedule A, B and C. 18

19 Sewers Bylaw #9425 To specify requirements for connecting a private drainage system to the City sewer system: Installation of manholes for monitoring purposes; Runoff drainage at high potential contaminate release areas; Installation of grease traps, oil/sand interceptors or other pre-treatment equipment; Installation of ISO certified amalgam separators etc. 19

20 Inspections Compliance Program Proactive Program Inspect all ICI premises every 5 10 Years Investigations Reactive Program - complaint response Sampling as needed Bylaw Enforcement Verbal and written warnings Fines and orders 20

21 Preliminary inspections Detailed inspections Inspections Key manhole inspections Joint inspections with AENV Random and unannounced Documented 21

22 What do we inspect Chemicals used and chemical storage area 22

23 Grease traps Oil interceptors Sand interceptors Dental amalgam separators Sumps What do we inspect 23

24 Inspections Preliminary Detailed Key Manhole 24

25 Investigations Reactive Program Public complaints (311-24/7) Spills (reported and unreported) Work with provincial and federal government Documented 25

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28 Compliance monitoring Composite Grab Discrete Gas Visual 28

29 Legal Sampling Full Chain of Custody Seals / Locks Photos Third Party Lab Documentation QA/QC Samples 29

30 Enforcement Actions 1st Notice to Comply oral or written Usually this resolves the problem Second Notice to Comply written warning Usually have a site compliance meeting to address the problem and discuss solutions Fine / order Fines up to $10,000 Disconnect services 30

31 Enforcement Matrix 31

32 Fines and Warnings Notices Fines 32

33 Voluntary Compliance Program To encourage achieving compliance through management and engineering methods More time/cost efficient than legal action Most industries will cooperate with reasonable, well founded request 33

34 Compliance Program Approval Compliance Program Approval To allow a facility to release wastewater with elevated constituent levels for a specific period. To be subjected to terms & conditions as specified in the approval. Such as program schedule, periodic monitoring and reporting. 34

35 Overstrength Surcharge To recover additional cost associated with high concentration industrial wastewater Only applied to treatable wastes Surcharge rate is based on cost of treatment. Surcharge billing is calculated using averaged monitoring results 35

36 Composite sample Surcharge Sampling 90ml every 15 minutes over a 24 hour period 10 L Negane bottle ISO17025 Certified 36

37 Surcharge samples Total Surcharge Samples Each Year

38 Surcharge revenue Surcharge Revenue ($1,000) $3,500 $3,000 $2,500 $2,000 $1,500 $1,000 $500 $

39 Transfer Stations Monitoring Two fully automated wastewater transfer stations for release of trucked wastewater Card accessible with video surveillance Auto sampler Manifests required Camera Auto sampler Dumping port 39

40 Transfer Station Revenue $ CBTS PMTS 40

41 Site Visits Inspection Investigation Meetings Web Page Pamphlets Media Releases Education 41

42 Recent Projects Pollution Prevention Workshops Dental Amalgam Reduction Program Field Computer Program FOG Reduction Program Mobile Vehicle Washing Control Regional Wastewater Source Control 42

43 Dental Amalgam Reduction Program Mandatory Program through education and enforcement actions since November 2007 ISO certified amalgam separator installation rate reached 98% in Edmonton by end of

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45 Regional Inspection Working together Alberta Capital Region Wastewater Commission to have consistent bylaw requirement and compliance program throughout Edmonton and capital regional municipalities. 45

46 Questions? Thank you! 46