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Document ID ca-swtpuep-2023-04-19 Title STPFN Wastewater Treatment Plant Upgrade and Expansion Project URL https://iaac-aeic.gc.ca/050/evaluations/proj/82963 Jurisdiction /ca Subdomain(s) Wastewater treatment, Wastewater collection, Sludge management Language en Status completed Analyzed at 2026-03-19 08:48:43.306345+00:00 Relevance Project assessment and approval for wastewater infrastructure on federal lands.

20 Qualitative 18 Quantitative 0 Definitions

Q Qualitative Requirements (20)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Context	Conditions	Confidence
#Q001	monitoring	operational	mandatory	Effluent Monitoring	wastewater	The effluent will be monitored continuously to confirm it meets the effluent discharge criteria as described in the Wastewater Systems Effluent Regulations(2017).	During operation	high
#Q002	corrective_action	operational	mandatory	Emergency Wastewater Discharge	wastewater	Should a flood event occur, the South WWTP will discharge wastewater overflows to Island Lake via a 300 mm gravity effluent overflow outfall as an emergency measure.	Should a flood event occur	high
#Q003	operational	treatment	mandatory	Sludge Dewatering and Hauling	wastewater	Sludge will be de-watered using de-watering trailers and approximately 1.73 m/day of de-watered sludge will be hauled to the sludge drying beds on a regular basis (approximately every 7 days).	During operation	high
#Q004	operational	operational	mandatory	Dried Sludge Disposal	wastewater	Dried sludge will be hauled to the neighboring community landfill site, on an as-needed basis, to be used as interim cover material.	As needed	high
#Q005	operational	operational	mandatory	North WWTP Decommissioning Waste Handling	wastewater	Sewage and liquid wastes from the North WWTP will be hauled to the new truck haul wastewater receiving station while the sludge would be disposed of at the sludge drying beds following dewatering.	During decommissioning of the North WWTP	high
#Q006	operational	operational	mandatory	Lift Station #4 Decommissioning Waste Handling	wastewater	During decommissioning of Lift Station #4, sewage and liquid wastes will be hauled to the new truck haul wastewater receiving station.	During decommissioning of Lift Station #4	high
#Q007	operational	operational	mandatory	Lift Station #4 Infrastructure Disposal	wastewater	The internal infrastructure (piping, valves, pumps, etc.) will be removed and disposed of at the landfill.	During decommissioning of Lift Station #4	high
#Q008	operational	operational	mandatory	Lift Station #4 Control Panel Salvage	wastewater	The control panel will be salvaged and handed over to STPFN to use as parts for the other lift stations in the community.	During decommissioning of Lift Station #4	high
#Q009	operational	operational	mandatory	General Office Waste Disposal	other	General office waste will be sent to the local community waste disposal ground.	During operation	high
#Q010	operational	operational	mandatory	Continuous Effluent Discharge Method	wastewater	Treated wastewater effluent will be discharged to Island Lake on a continuous basis through the existing discharge/outfall structure.	During operation	high
#Q011	administrative	operational	guidance	North WWTP Building Retention Option	other	During decommissioning of the North WWTP, STPFN may choose to retain the existing WWTP building for a future use as a storage facility.	During decommissioning of the North WWTP	high
#Q012	administrative	reporting	mandatory	Project Assessment Responsibility	other	The listed authorities are responsible for the project assessment.	Non-designated project assessment	high
#Q013	design	operational	mandatory	North Lift Station Construction and Connection	wastewater	Constructing a new lift station (North Lift Station) installed approximately 10 m north of the North WWTP to service the north catchment area of STPFN and convey wastewater to the South WWTP.	During project construction phase	high
#Q014	design	operational	mandatory	North Lift Station Sewer Installation	wastewater	Installing a 250 mm diameter gravity sewer connecting the manhole of the North WWTP (MH 79) to the North Lift Station.	During project construction phase	high
#Q015	design	operational	mandatory	South WWTP Expansion Components	wastewater	Upgrading, repairing, and expanding the existing South WWTP, including construction of the expanded superstructure, new truck dump pad and manhole, installation/repairs to process and mechanical equipment, a new 300 mm gravity effluent overflow outfall discharging to rip rap east of the superstructure on the shore of Island Lake, and a new 375 mm gravity sewer line (approximately 60 m in length) to Manhole #4.	During project expansion phase	high
#Q016	operational	operational	mandatory	Sludge Drying Bed Upgrade Procedures	wastewater	Upgrading the sludge drying beds by draining away the liquid and hauling it to the South WWTP, allowing sludge to dry, pushing sludge into stockpiles, and re-grading the site to prevent accumulation of rain/snow.	During upgrade of sludge drying beds	high
#Q017	design	operational	mandatory	Access Road Upgrade for Truck Access	other	Upgrading (widening) and re-surfacing the access road to the sludge drying beds to accommodate truck turn around.	During access road upgrading	high
#Q018	design	operational	mandatory	HDPE Forcemain Installation	wastewater	Installing a new 200 mm high density polyethylene (HDPE) forcemain (approximately 2.65 km in length) connecting the North Lift Station to existing gravity sewer at Manhole #8.	Project construction phase	high
#Q019	design	operational	mandatory	Lift Station #4 Decommissioning and Sewer Installation	wastewater	Decommissioning the existing Lift Station #4 and installing a new 200 mm diameter gravity sewer line (approximately 8 m in length) to convey wastewater flowing from the decommissioned lift station #4 to the North Lift Station.	Project decommissioning and construction phase	high
#Q020	design	operational	mandatory	North WWTP Decommissioning Action	wastewater	Decommissioning of the North WWTP.	Project decommissioning phase	high

P Quantitative Requirements (18)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Limit Type	Limit Value	Context	Conditions	Confidence
#P001	design	treatment	unknown	20-year projected flows capacity	wastewater	requirement	2,100 m/day	With the expansion, it will have the capacity to meet 20-year projected flows of an average 2,100 m/day.	Future community growth / 20-year projection	high
#P002	design	operational	unknown	Gravity sewer diameter (MH 79 to North Lift Station)	wastewater	requirement	250 mm	Installing a 250 mm diameter gravity sewer connecting the manhole of the North WWTP (MH 79) to the North Lift Station.		high
#P003	design	operational	unknown	Gravity sewer line diameter (from decommissioned Lift Station #4)	wastewater	requirement	200 mm	Installing a new 200 mm diameter gravity sewer line (approximately 8 m in length) to convey wastewater		high
#P004	design	operational	unknown	HDPE forcemain diameter	wastewater	requirement	200 mm	Installing a new 200 mm high density polyethylene (HDPE) forcemain		high
#P005	design	operational	unknown	Gravity effluent overflow outfall diameter	wastewater	requirement	300 mm	a new 300 mm gravity effluent overflow outfall discharging to rip rap east of the superstructure	Should a flood event occur, the South WWTP will discharge wastewater overflows	high
#P006	design	operational	unknown	Gravity sewer line diameter (to Manhole #4)	wastewater	requirement	375 mm	and a new 375 mm gravity sewer line (approximately 60 m in length) to Manhole #4		high
#P007	operational	operational	unknown	Treated wastewater effluent flow	wastewater	unknown	40 L/s	During operation, the WWTP treatment process produces sludge (56 m/day at 0.85% solids) and treated wastewater effluent (40 L/s).	During operation	high
#P008	design	treatment	unknown	Upgraded South WWTP average design capacity	wastewater	requirement	1,480 m/day	The upgraded South WWTP currently has an average design capacity of 1,480 m/day.	Current design capacity after upgrade	high
#P009	operational	treatment	unknown	Wastewater treatment process sludge production	wastewater	requirement	56 m/day	the WWTP treatment process produces sludge (56 m/day at 0.85% solids)	During operation	high
#P010	physical	treatment	unknown	Sludge solids concentration	wastewater	requirement	0.85 %	the WWTP treatment process produces sludge (56 m/day at 0.85% solids)	During operation	high
#P011	operational	operational	unknown	De-watered sludge hauling rate	wastewater	requirement	1.73 m/day	approximately 1.73 m/day of de-watered sludge will be hauled to the sludge drying beds	Regular basis	high
#P012	operational	operational	unknown	Sludge hauling frequency	wastewater	requirement	7 days	hauled to the sludge drying beds on a regular basis (approximately every 7 days)	Regular operation	high
#P013	design	operational	unknown	Gravity sewer length (LS #4 to North Lift Station)	wastewater	requirement	8 m	installing a new 200 mm diameter gravity sewer line (approximately 8 m in length)	Conveying wastewater from decommissioned lift station #4	high
#P014	design	operational	unknown	HDPE forcemain length	wastewater	requirement	2.65 km	Installing a new 200 mm high density polyethylene (HDPE) forcemain (approximately 2.65 km in length)	Connecting North Lift Station to Manhole #8	high
#P015	design	operational	unknown	Gravity sewer line length (to Manhole #4)	wastewater	requirement	60 m	a new 375 mm gravity sewer line (approximately 60 m in length) to Manhole #4		high
#P016	design	treatment	unknown	2021 on-reserve population	wastewater	requirement	4,062 people	The 2021 on-reserve population is 4,062 people (INAC, 2021).	As of 2021	high
#P017	design	operational	unknown	Sludge drying bed distance	wastewater	requirement	5 km	the sludge drying bed area, located approximately 5 km south of the South WWTP	Relative to South WWTP	high
#P018	design	operational	unknown	North Lift Station location offset	wastewater	requirement	10 m	Constructing a new lift station (North Lift Station) installed approximately 10 m north of the North WWTP	Relative to North WWTP	high

D Definitions (0)

No definitions.