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Document ID ca-xfnwsm-2023-06-26 Title Xa'xtsa (Douglas First Nation) Wastewater and Sludge Management URL https://iaac-aeic.gc.ca/050/evaluations/proj/84641 Jurisdiction /ca Subdomain(s) Wastewater treatment, Sludge & biosolids management, Decentralized & on-site systems Language en Status completed Analyzed at 2026-03-18 15:47:11.177539+00:00 Relevance Outlines design standards, effluent limits, and permitting for wastewater systems.

Q Qualitative Requirements (23)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001designtreatmentrecommendedDesign to MWR StandardswastewaterAlthough ground discharges on reserve are not "registered" under the MWR, it is considered prudent to design such systems to MWR standards.high
#Q002monitoringoperationalmandatoryPre-Design Field TestingwastewaterFurther field testing will be carried out during Pre-Design.During Pre-Designhigh
#Q003monitoringoperationalmandatoryGravel Pit Area Additional TestingwastewaterAdditional testing will be required at the gravel pit area if this site is considered further.If the gravel pit area site is considered furtherhigh
#Q004monitoringoperationalrecommendedWater Table Level MonitoringwastewaterAs such, it is recommended water table levels be monitored for further data.high
#Q005designoperationalmandatorySeptage Disposal Site BasinswastewaterHave, at minimum, two basin cells for disposal so they can be alternated to rest and perform maintenance without removing the facility from operation;high
#Q006designtreatmentmandatorySeptage Disposal Site Soil and Water Table DepthwastewaterConstructed with granular soils, with water table minimum 4 m below top of trench / pit;high
#Q007designoperationalmandatorySeptage Disposal Site BermwastewaterInclude a perimeter berm with freeboard;high
#Q008designhealthmandatorySeptage Disposal Site Fencing and SignagewastewaterFencing and signage installed for public awareness and safety;high
#Q009reportingreportingmandatorySeptage Disposal Record LogswastewaterRecord logs kept for tracking volumes of sludge disposed.high
#Q010administrativeunknownrecommendedHydrogeological and Environmental Impact StudywastewaterA hydrogeological investigation and environmental impact study should be completed to determine the suitability of the sludge disposal site by confirming the location and assess its performance parameters.high
#Q011operationaloperationalrecommendedConstruction Waste DisposalwastewaterDispose of construction waste at an appropriate facility;During construction workshigh
#Q012operationaloperationalrecommendedConstruction Equipment RefuelingwastewaterRefuel construction equipment at a dedicated location with appropriate spill containment and similar;During construction workshigh
#Q013operationaloperationalrecommendedErosion and Sediment ControlwastewaterImplement and maintain erosion and sediment control measures to minimize impacts to surrounding areas;During construction workshigh
#Q014operationaloperationalrecommendedDewatering Discharge ManagementwastewaterIf dewatering is required, ensure discharged water is directed to an appropriate location with erosion and sediment control in place;If dewatering is requiredhigh
#Q015operationaloperationalrecommendedVegetation and Tree Clearing TimingwastewaterConduct vegetation / tree clearing between August 17th and March 12th which avoids the nesting season for migratory birds known to frequent the area. Alternatively, an active nest survey could be completed by a Qualified Environmental Professional.During vegetation / tree clearinghigh
#Q016administrativeunknownmandatorySludge Disposal Pit PermitwastewaterThe sludge disposal pit will require a permit from the BC Ministry of Environment (MoE).high
#Q017administrativeunknownunknownCrown Land Right-of-Way/Tenure RequirementwastewaterA Crown Land Right-of-Way, Tenure, or similar may also be required depending on the site location selected as well as the Addition to Reserve process status.Depending on the site location selected as well as the Addition to Reserve process statusmedium
#Q018administrativeunknownmandatoryArchaeological Assessment and Monitoring ReviewwastewaterAccordingly, archaeological considerations will need to be reviewed with Xa'xtsa to determine appropriate assessment / monitoring requirements.high
#Q019prohibitionoperationalmandatoryAvoid Known Archaeological/Heritage SiteswastewaterAvoid known archaeological/heritage resource sites as per the direction of Xa'xtsa.high
#Q020administrativeoperationalmandatoryChance Find ProcedurewastewaterHave a chance find procedure in place prior to construction.Prior to constructionhigh
#Q021operationaloperationalguidanceDust SuppressionwastewaterUse water to suppress dust generated during construction as necessary.During construction as necessaryhigh
#Q022administrativereportingmandatoryAuthority Project Assessment ResponsibilityotherThe listed authorities are responsible for the project assessment.high
#Q023administrativeoperationalmandatoryFNHA Permit to ConstructwastewaterFor on-site septic systems (less than 22.7 m3/d), the First Nations Health Authority (FNHA) issues a Permit to Construct a Sewage Disposal System.For design flows less than 22.7 m3/dhigh

P Quantitative Requirements (8)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001designunknownguidelineDesign flows (on-site septic systems)wastewaterrequirement< 22.7 m3/dFor design flows less than 22.7 m3/d, effluent disposal to ground is typically governed by the requirements set out in the BC Ministry of Health Sewerage System Standard Practice Manual (SSSPM).on-site septic systemshigh
#P002designunknownguidelineDesign flows (ground disposal)wastewaterrequirement> 22.7 m3/dThe BC Municipal Wastewater Regulation (MWR) specifies effluent quality requirements for ground disposal of design flows greater than 22.7 m3/d.ground disposalhigh
#P003designunknownmandatoryWater table depthwastewaterrequirement>= 4 mConstructed with granular soils, with water table minimum 4 m below top of trench / pitSiting and construction of the septage disposal site (basins or trenches)high
#P004designoperationalmandatoryMinimum number of basin cellswastewaterrequirement>= 2 basin cellsHave, at minimum, two basin cells for disposal so they can be alternated to rest and perform maintenance without removing the facility from operationSiting and construction of the septage disposal sitehigh
#P005operationaloperationalrecommendedVegetation clearing windowotherrequirementAugust 17th - March 12th datesConduct vegetation / tree clearing between August 17th and March 12th which avoids the nesting season for migratory birds known to frequent the area.To avoid the nesting season for migratory birdshigh
#P006physicaloperationalguidancePercolation rates (BC Hydro site)wastewaterrequirement19:55, 22:30, 21:12 minutes:seconds per 25 mmThe percolation rates (BC Hydro site) from testing were measured at 19:55, 22:30, and 21:12 (minutes:seconds per 25 mm).BC Hydro site area northern Tipella communityhigh
#P007physicaloperationalguidanceExpected groundwater depthwastewaterrequirement5 mGroundwater (water table) depths are expected to be 5 m below ground surface for much of the year.Expected levels for much of the yearhigh
#P008physicalunknownunknownDistance to Lillooet Riveraquatic liferequirement250 mThe nearest fish-bearing watercourse is the Lillooet River at a distance of 250 m; thus, impacts to fisheries resources are not anticipated.Site description regarding aquatic wildlifehigh

D Definitions (7)

Req ID Category Name Context Confidence
#D001SSSPMBC Ministry of Health Sewerage System Standard Practice Manualhigh
#D002FNHAFirst Nations Health Authorityhigh
#D003MWRBC Municipal Wastewater Regulationhigh
#D004BC MoEBC Ministry of Environmenthigh
#D005ISCIndigenous Services Canadahigh
#D006MoEBC Ministry of Environmenthigh
#D007Xa'xtsaDouglas First Nationhigh