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Document ID ca-mb-eabccwrcecph-2003-01-20-2 Title ENVIRONMENTAL APPROVALS BRANCH (EAB) COMMENTS ON CITY OF WINNIPEG RECOMMENDATIONS TO THE CLEAN ENVIRONMENT COMMISSION PUBLIC HEARINGS - JANUARY 20, 2003 URL https://www.gov.mb.ca/sd/eal/registries/4864wpgww/hpmc/comments-recommendation.pdf Jurisdiction /ca/mb Subdomain(s) Wastewater Treatment, Regulatory Compliance Language en Status completed Analyzed at 2026-03-25 21:26:31.776997+00:00 Relevance Defines regulatory requirements for wastewater treatment and discharge limits.

13 Qualitative 9 Quantitative 7 Definitions

Q Qualitative Requirements (13)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Context	Conditions	Confidence
#Q001	administrative	unknown	guidance	Ammonia Effluent Limit Development	wastewater	The Environmental Approvals Branch is of the view that effluent discharge limits for ammonia be developed using the November 22 nd Final Draft ReportManitoba Water Quality Standards, Objectives, and Guidelines , 75% allocation of the Red River for assimilation, and a 1913 to 2002 flow record period.	As additional studies are required to confirm the site specific criterion.	high
#Q002	treatment	treatment	recommended	Centrate Treatment Operation Timeline	wastewater	Centrate treatment at the NEWPCC should be in place for operation in 2005.		high
#Q003	operational	operational	recommended	CSO Control Timeframe and Prioritization	wastewater	Consideration should be given to reduce the timeframe of implementation and on setting priorities for action based on loading from the specific CSO. (e.g. target areas of industrial operations first)		high
#Q004	administrative	operational	mandatory	Wastewater System Risk/Criticality Assessments	wastewater	The Environmental Approvals Branch is of the view that the Risk/Criticality Assessments at the three WPCCs in 2003 be mandatory.		high
#Q005	administrative	operational	mandatory	Branch Review of Risk/Criticality Assessments	wastewater	Once the assessments are complete, the Branch will review and provide comments on them, and if necessary, address requirements by terms and conditions in the Environment Act Licences for the WPCC's.	Once the assessments are complete.	high
#Q006	monitoring	unknown	mandatory	Ammonia Toxicity Studies and Monitoring	wastewater, aquatic life	That additional studies, monitoring programs and testing of ammonia toxicity to expand the site-specific knowledge on the effects of ammonia on local species be undertaken in cooperation with Manitoba Conservation.	In cooperation with Manitoba Conservation	high
#Q007	design	unknown	mandatory	CSO Overflow Frequency Target	wastewater, recreational water	reduce overflow events on a citywide basis to an average of 4 events per summer recreation season (May 15 to Sept 30, inclusive) within about a 50-year timeframe.	May 15 to Sept 30, inclusive; within about a 50-year timeframe	high
#Q008	administrative	health	mandatory	Fecal Coliform Effluent Limits Establishment	wastewater, recreational water	That effluent discharge limits for fecal coliform be established to protect the Red and Assiniboine Rivers for recreational use during the summer recreation season.	During the summer recreation season	high
#Q009	prohibition	treatment	recommended	Nutrient Reduction Limit Deferral	wastewater	That it be recommended to the Clean Environment Commission that limits, which would entail tertiary treatment for nutrient reduction, not be established until the Province has completed their basin-wide Nutrient Management Study, and conducted stakeholder and public consultations.	Until the Province has completed their basin-wide Nutrient Management Study, and conducted stakeholder and public consultations	high
#Q010	administrative	unknown	mandatory	Site-Specific Ammonia Regulation Basis	wastewater, aquatic life	the discharges from the City's wastewater treatment plants be regulated on a site-specific basis consistent with the findings and recommendations of the City's study entitled 'Red and Assiniboine Rivers Ammonia - Criteria Study, Final Technical Report, November 2002' prepared by TetrES Consulting Inc., in association with North/South Consultants Inc., and external advisors.		high
#Q011	operational	treatment	mandatory	WEWPCC Polishing Ponds Continued Use	wastewater	Continued use of the polishing ponds at the West End Water Pollution Control Centre (WEWPCC),		high
#Q012	prohibition	operational	mandatory	SEWPCC Ammonia Reduction Requirement and Review	wastewater	No additional treatment works at the South End Water Pollution Control Centre (SEWPCC) for ammonia reduction with a review of the sitespecific requirement for ammonia treatment at the SEWPCC in 10 years.	Review required in 10 years	high
#Q013	administrative	treatment	mandatory	WPCC Effluent Limits Basis - Secondary Treatment	wastewater	That effluent discharge limits for the Water Pollution Control Centres be recommended to the Clean Environment Commission based on the existing secondary treatment performance.		high

P Quantitative Requirements (9)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Limit Type	Limit Value	Context	Conditions	Confidence
#P001	design	treatment	recommended	Red River allocation for assimilation	aquatic life, wastewater	requirement	75 %	Used to develop effluent discharge limits for ammonia.	Using a 1913 to 2002 flow record period.	high
#P002	operational	operational	recommended	Combined Sewer Overflow (CSO) frequency	wastewater, recreational water	treatment_goal	4 events per summer recreation season	Long-term alternative to reduce overflow events on a citywide basis within about a 50-year timeframe.	Average; Summer recreation season (May 15 to Sept 30, inclusive).	high
#P003	operational	operational	guidance	Combined Sewer Overflow (CSO) frequency	wastewater	treatment_goal	4 events per year	The Environmental Approvals Branch is in agreement with the strategy to reduce the frequency of overflows.	Average	high
#P004	operational	treatment	recommended	Site-specific ammonia treatment review frequency	aquatic life, wastewater	requirement	10 years	Review of the site-specific requirement for ammonia treatment at the SEWPCC.	Applies specifically to the South End Water Pollution Control Centre.	high
#P005	design	treatment	guidance	Ammonia limit development flow record period	wastewater	requirement	1913 to 2002 years	Period used for flow record record to develop effluent discharge limits for ammonia.		high
#P006	operational	treatment	guidance	Centrate treatment operational deadline	wastewater	requirement	2005 year	Centrate treatment at the NEWPCC should be in place for operation.		high
#P007	design	operational	recommended	CSO control program implementation timeframe	wastewater	treatment_goal	50 years	Timeframe to reduce overflow events on a citywide basis to an average of 4 events per summer recreation season.	Long-term alternative.	high
#P008	operational	operational	mandatory	Number of WPCCs requiring Risk/Criticality Assessments	wastewater	requirement	3 facilities	Risk/Criticality Assessments to assess reliability and backup capability to prevent discharge of untreated sewage.	Assessed at the NEWPCC, SEWPCC, and WEWPCC.	high
#P009	operational	reporting	mandatory	Risk/Criticality Assessments completion deadline	wastewater	requirement	2003 year	Assessments at the three WPCCs to be undertaken to assess reliability.	EAB view is that these assessments are mandatory.	high

D Definitions (7)

Req ID	Name	Context	Confidence
#D001	NH3	Ammonia	high
#D002	NEWPCC	North End Water Pollution Control Centre	high
#D003	WEWPCC	West End Water Pollution Control Centre	high
#D004	SEWPCC	South End Water Pollution Control Centre	high
#D005	CSO	Combined Sewer Overflow	high
#D006	WPCCs	Water Pollution Control Centres	high
#D007	EAB	Environmental Approvals Branch	high