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Document ID ca-bc-wabmgdmpo-2016-06 Title Water and Air Baseline Monitoring Guidance Document for Mine Proponents and Operators URL https://www2.gov.bc.ca/assets/gov/environment/waste-management/industrial-waste/industrial-waste/water_air_baseline_monitoring.pdf Jurisdiction /ca/bc Subdomain(s) Industrial wastewater, Groundwater, Surface water Language en Status completed Analyzed at 2026-03-15 10:08:47.176554+00:00 Relevance Defines baseline monitoring requirements for mine permitting and operations.

Q Qualitative Requirements (82)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001reportingreportingmandatoryBaseline Data Duration and QualityotherMOE expects an application for mine development to contain and interpret quality-assured environmental baseline data collected over an absolute minimum of 12 months (with 24 or more months preferred).During application for mine developmenthigh
#Q002monitoringreportingmandatoryBaseline Data UsabilityotherThe data must adequately characterize spatial and seasonal variability and must be suitable for use in impact prediction.For baseline data collectionhigh
#Q003administrativereportingrecommendedProfessional Qualifications for StudiesotherThe different components of any of the studies conducted as part of the environmental assessment process should be planned and conducted by a qualified professional in the relevant field.When planning and conducting environmental assessment studieshigh
#Q004designoperationalmandatoryMeteorological Station StandardsotherTo ensure that meteorological and air quality stations collect representative data, stations and sensors must conform to standards set by both the federal and provincial governments.When installing meteorological stationshigh
#Q005monitoringoperationalmandatoryHydrometric Survey Manual AdherenceotherThe proponent must use the most current version of this hydrometric manual as a reference or guideline for conducting hydrometric surveys to collect baseline data for the EA process.When conducting hydrometric surveys for baseline datahigh
#Q006monitoringoperationalmandatoryStaff Gauge Periodic SurveyingotherFor all hydrometric monitoring sites, it is mandatory that staff gauges are surveyed periodically and controlled for shifts in elevation against fixed reference points (or bench marks).Applicable to all hydrometric monitoring siteshigh
#Q007reportingreportingmandatoryReporting Hydrometric Data ConfidenceotherWith respect to the reporting of hydrometric data, the report must include a discussion on the precision, accuracy, completeness, and comparability of the data to inform decision makers of the confidence that they can place in the dataset.When reporting hydrometric datahigh
#Q008operationaloperationalmandatoryGroundwater Protection Regulation ComplianceotherThe Ground Water Protection Regulation (GWPR) under the Water Act of British Columbia must be followed during the construction, maintenance, and closure of monitoring wells and geotechnical wells (including boreholes, test wells, and test pits).During construction, maintenance, and closure of monitoring wellshigh
#Q009monitoringoperationalmandatorySpatial and Vertical Coverage of Groundwater DataotherProponents need to ensure that groundwater data have sufficient spatial and vertical coverage to characterize the three-dimensional groundwater flow regime at both the site and off-site in the receiving environment.When establishing monitoring siteshigh
#Q010designoperationalmandatoryUp-gradient Monitoring WellsotherA representative number of monitoring wells must be up-gradient from the proposed mine for background control and to establish groundwater level trends before the project begins and for the duration of the project.When establishing the monitoring well networkhigh
#Q011reportingreportingmandatoryData Storage and SecurityotherData should be stored in a database or spreadsheet. The raw data files from data loggers must be stored so that data can be recovered if corrupted in a database.For hydrogeologic data storagehigh
#Q012monitoringoperationalmandatoryDetection Limit Sufficiencyaquatic lifeThe detection limit for each water quality parameter of interest must be less than the respective WQG, ideally by one order of magnitude.When analyzing water quality parametershigh
#Q013reportingreportingmandatoryStatistical Power A Priori ReportingotherFor ground and surface water quality baseline studies, proponents are responsible for reporting the a priori statistical power of their sampling plan (for two to three critical parameters) to provide reviewers of the Environmental Assessment with an understanding of the strengths and weaknesses of the program.When planning surface and ground water baseline studieshigh
#Q014monitoringoperationalmandatoryISO 17025 Laboratory AccreditationotherAll samples must be tested by a laboratory that is accredited to ISO 17025 standards for the relevant test methods.When submitting water quality samples for laboratory testinghigh
#Q015operationaloperationalmandatoryQA/QC Program ImplementationotherProponents must institute an appropriate QA/QC program to evaluate and ensure confidence in the data collected.For all data collection programshigh
#Q016monitoringoperationalmandatoryField Filtering Exemption for Dissolved Metals PreservationotherDissolved metals samples that will be lab filtered must not be field preserved.If samples will be filtered in the laboratory instead of the fieldhigh
#Q017reportingreportingmandatoryData Map RequirementotherGraphical and tabular displays of data are strongly encouraged to supplement text. Maps showing monitoring locations are required.When reporting water quality monitoring resultshigh
#Q018reportingreportingmandatoryReporting Provisional Data Due to TurbidityotherHowever, the report must specify that groundwater quality data are provisional due to high turbidity, and the report should contain an assessment of the expected mobility of colloid-sized particles within the groundwater system.If reporting data from naturally turbid wellshigh
#Q019monitoringoperationalmandatorySediment Sampling Sites Geo-referencingaquatic lifeAll sample sites must also be geo-referenced, mapped and photographed.During selection of sediment sampling siteshigh
#Q020monitoringoperationalmandatoryFine-Grained Sediment Targetingaquatic lifeTherefore, the assessment of sediment quality must be carried out on the fine-grained sediments sampled in areas of the water body where permanent accumulation of sediment is taking place.When sampling sedimenthigh
#Q021monitoringoperationalmandatorySediment Metals Digestion MethodotherThe BC Strong Acid Leachable Metals (BC SALM) digestion method must be used for the analysis of all metals in sediments.For laboratory analysis of metals in sedimentshigh
#Q022monitoringoperationalmandatoryAvoid Sediment Disturbance Prior to Deploymentaquatic lifeDo not disturb bottom sediments before deploying the sampling device.Prior to sample collectionhigh
#Q023monitoringoperationalmandatoryComposite Sediment Sample Compositionaquatic lifeCollect each sample as a composite of sediment from several (minimum of three) submerged silt/clay locations, preferably using two (one large, one small) stainless steel utensils for organic analysis or two (one large, one small) plastic utensils for metal analysis.When collecting composite sediment sampleshigh
#Q024monitoringoperationalmandatoryMinimize Destructive Samplingaquatic lifeThe proponent must consider how to minimize unnecessary destructive sampling of fish, amphibian, and aquatic bird species, particularly target species that may be threatened over timeWhen planning biological tissue monitoringhigh
#Q025reportingreportingmandatoryDry/Wet Weight Reporting Notationaquatic lifeAll data reports must clearly indicate whether analytical results are being reported as dry weight (dwt) or wet weight (wwt).When reporting tissue residue datahigh
#Q026monitoringoperationalmandatoryEquipment Cleaning for Organics and Metalsaquatic lifeFor metals analysis, collect samples using plastic equipment that has been washed in nitric acid. For organics analysis, collect samples with stainless steel equipment washed in acetone.When collecting tissue sampleshigh
#Q027monitoringoperationalmandatoryTissue Replicate Analysis for Laboratory Precisionaquatic lifeEnsure that the laboratory assesses its precision by homogenizing, splitting, and analyzing every eighth fish tissue replicate.During laboratory analysis of fish tissuehigh
#Q028reportingreportingmandatoryFish Tissue Database Requirementaquatic lifeDevelop a fish tissue database identifying metals for each watercourse in the mine site area.Following tissue residue analysishigh
#Q029reportingreportingmandatoryDispersion Modelling RequirementotherConduct air quality dispersion modelling (required for most EA reviews).For most Environmental Assessment reviewshigh
#Q030monitoringoperationalmandatoryHydrologic Baseline DurationotherConduct a baseline hydrologic study with a minimum of two years of data.Baseline hydrologic study phasehigh
#Q031monitoringoperationalmandatoryGroundwater Baseline DurationotherConduct groundwater quantity and quality baseline studies with a minimum of one year of quarterly data.Baseline groundwater study phasehigh
#Q032administrativeoperationalmandatoryCollection Permit Requirementaquatic lifeObtain appropriate fish and wildlife collection permits.Prior to tissue residue or fish samplinghigh
#Q033administrativereportingmandatoryProfessional Assessment SealotherThe assessment is expected to be performed to the current standard of professional practice and sealed by an appropriate qualified professional.For surficial hydrology assessmentshigh
#Q034monitoringoperationalmandatoryUpstream Barrier Samplingaquatic lifeTherefore, all stream reaches and tributaries upstream of barriers must be sampled to demonstrate fishbearing status.When demonstrating fish-bearing status for migratory specieshigh
#Q035monitoringoperationalrecommendedPre-construction Monitoring Durationaquatic lifeAt a minimum, two years of monitoring prior to construction is recommended.For monitoring programs that continue after mine constructionhigh
#Q036reportingreportingrecommendedHydrogeologic Data StorageotherData should be stored in a database or spreadsheet.For hydrogeologic data reportinghigh
#Q037monitoringoperationalmandatoryStratified Lake Sampling Requirementaquatic lifeIf vertical profiling reveals the presence of lake stratification with regards to temperature, conductivity and dissolved oxygen, water sampling at multiple lake depths must be undertaken.When lake stratification is detected via vertical profilinghigh
#Q038reportingreportingmandatoryMass Balance Model Justification and Data AccessibilityotherWhatever approach is adopted, the proponent needs to: - explain and justify the chosen method; - make reasonably conservative estimates of input parameters; and - make the data available for government review.When predicting inputs to the water quality mass balance modelhigh
#Q039monitoringoperationalrecommendedConstruction Phase Turbidity and TSS MonitoringotherDue to elevated risk of erosion and soil runoff during mine construction (and early operational phases), daily turbidity measurements with weekly TSS analysis and weekly reporting are recommended during the construction and early operational phases.During mine construction and early operational phaseshigh
#Q040monitoringoperationalrecommendedNon-Fish-Bearing Status Determination Periodaquatic lifeNon-fish-bearing status should be established over two consecutive years.When determining fish absence in a waterbodyhigh
#Q041administrativeoperationalrecommendedConsultation on Departures from RISC Standardsaquatic lifeAny departure from these standards should be discussed prior to the initiation of field assessments with and supported by the appropriate FLNRO fisheries equivalent representative well in advance of field surveys.When deviating from RISC standards for fish and habitat datahigh
#Q042reportingreportingrecommendedGroundwater Uncertainty Discussion and Evaluationotherproponents should discuss uncertainties that are inherent to the characterization of the groundwater system and provide, at a minimum, a qualitative evaluation of their potential significance in the assessment of project impacts.During reporting on hydrogeology baseline and impact predictionhigh
#Q043monitoringoperationalrecommendedGround-truthing of Well Inventory DataotherThe inventory of groundwater users should include some level of ground-truthing, such as verifying with local personnel about their knowledge of the area, site visits, and inspection of recent air photos, because not all wells are registered in the provincial repository (WELLS)When inventorying neighbouring well users and regional groundwater usehigh
#Q044administrativereportingguidanceAgency Consultation AdviceotherProponents are also advised to consult with the Environmental Assessment Office, the Ministry of Energy and Mines, the Ministry of Forests, Lands and Natural Resource Operations, and other Ministries as appropriate to ensure their respective requirements are being addressed.In advance of applying for regulatory approvals for mine development or operationshigh
#Q045reportingreportingrecommendedAnnual Environmental Quality Review ReportingotherThe proponent should report all baseline data, including those collected subsequent to submission of the EA application, as part of an annual environmental quality review.Throughout the application review periodhigh
#Q046monitoringoperationalrecommendedPost-Event Discharge MeasurementotherNew discharge measurements should be taken as soon as possible following a significant event to determine if the current rating curve is still applicable and if not, to provide the basis for development of a new curve.Following a significant high-water eventhigh
#Q047operationaloperationalmandatoryMonitoring Method and Safety ResponsibilityotherThe proponent is responsible for ensuring that the methods and techniques chosen are appropriate to the monitoring sites and that the monitoring activities carried out at these sites are in accordance with workplace safety policies.During hydrometric monitoringhigh
#Q048monitoringoperationalrecommendedSensor Calibration and RecalibrationotherSensor calibration should be checked quarterly, and sensors should be recalibrated when sensor drift exceeds 2% of the actual value.During use of non-vented pressure transducers and water level sensorshigh
#Q049operationaloperationalrecommendedSample Storage and Transport TemperatureotherSamples should be kept at a temperature ≤10 °C (but not frozen) during shipping and handling.During shipping and handling of surface and groundwater quality sampleshigh
#Q050reportingreportingmandatoryProvincial Database Data EntryotherThe proponent is responsible for ensuring that sampling sites and data are entered into the provincial database (EMS), following discussion with regional MOE representatives.Upon collection of water quality resultshigh
#Q051operationaloperationalrecommendedLethal Sampling Minimizationaquatic lifeAll efforts should be made to minimize lethal sampling by determining all federal and provincial data requirements and using as few fish as possible to meet these requirements.During fish tissue residue monitoringhigh
#Q052monitoringreportingrecommendedTaxonomy Identification Depthaquatic lifeTaxonomy samples should be identified to the lowest possible taxonomic level in the laboratory.During taxonomic analysis for tissue residue programshigh
#Q053monitoringoperationalmandatoryGroundwater Assessment Data Collection ResponsibilityotherThe proponent is responsible for collecting all required data for a thorough groundwater assessment.For mine environmental assessmenthigh
#Q054monitoringoperationalmandatoryEarly Baseline InitiationotherStart the collection of information as early as possible in the mine development process.Mine development process inceptionhigh
#Q055reportingreportingmandatoryData Availability for Regulatory AccessotherStore data appropriately and have it available for MOE and MFLNRO staff to access on request.Applies to all chapters 2-10 baseline datahigh
#Q056administrativereportingmandatoryMeteorology/Air Quality Methodology ConsultationotherThe proponent must contact an MOE Air Quality Meteorologist prior to beginning baseline monitoring to establish an agreed-upon methodology for dispersion modelling and data collection requirements, siting, and methodology.Prior to beginning baseline monitoringhigh
#Q057reportingreportingmandatoryExceedance and Trend Identification in ReportingotherThe proponent must identify instances where approved provincial WQGs, WQOs, or permit limits are exceeded and whether temporal or spatial trends exist.When reporting water quality monitoring resultshigh
#Q058reportingreportingrecommendedFish Presence Data Documentation and Entryaquatic lifeResults from presence and absence sampling should be documented using formats described in the Fish Stream Identification Guidebook (BC MOF and BC MELP, 1998) and entered into the provincial database using the Field Data Information System (FDIS).Following presence and absence samplinghigh
#Q059monitoringoperationalrecommendedPeriphyton Sampling Delay Post-Floodaquatic lifeperiphyton sampling should not occur until at least four weeks following a floodFollowing a flood eventhigh
#Q060operationaloperationalmandatoryMechanical Pump Requirement for High TurbidityotherThe use of a mechanical pump and not a bailer or hand pump is recommended at all times and is mandatory if field turbidity exceeds 50 NTU.If field turbidity exceeds 50 NTUhigh
#Q061reportingreportingrecommendedGroundwater Model Sensitivity AnalysisotherThe calibrated model should be used in a sensitivity study to identify key parameters influencing system behaviour and to provide an early evaluation of prediction uncertainty.At the EA Certificate application stage for hydrogeologic modelinghigh
#Q062monitoringoperationalmandatorySediment Fraction Specificationaquatic lifeSamples must be taken for the <63 µm sediment fraction and should be considered for other fractions.During sediment baseline monitoringhigh
#Q063reportingoperationalmandatoryMaterials Handling Plan SubmissionotherThe proponent must submit a mine plan that considers all of the information collected to produce a materials handling plan for the minimal impact on the receiving environment.During mine plan submissionhigh
#Q064designoperationalmandatoryMeteorological Station InstallationotherInstall meteorological station(s) to collect the data listed in this chapter.Prior to baseline monitoring phasehigh
#Q065administrativeoperationalmandatoryMeteorological Instrumentation Standards ConsultationotherConsult MOE staff to ensure that all instrumentation used conforms to the Ministry's standards.When selecting meteorological instrumentationhigh
#Q066monitoringoperationalrecommendedMonthly Hydrometric Sampling FrequencyotherDiscrete measurements of stream discharge and stage should occur at least once per month during the first year of baseline data collection, with an emphasis on timing the visits to capture the extreme high and low flows.During the first year of baseline hydrometric data collectionhigh
#Q067operationaloperationalmandatoryFish Muscle Sample Skin Removalaquatic lifeRemove the skin from dorso-lateral muscle tissue samples or muscle plugs prior to analysis.During processing of fish tissue sampleshigh
#Q068monitoringoperationalrecommendedIndependent Periphyton Sample Collectionaquatic lifeTaxonomy and biomass samples should be taken independently.During periphyton sampling for taxonomy and biomasshigh
#Q069reportingtreatmentmandatoryFish Habitat Compensation Plan Preparationaquatic lifePrepare a fish habitat compensation plan for Fisheries and Oceans Canada to consider the authorization of a harmful alteration, disruption or destruction (HADD) of fish habitatWhen mine activities result in HADD of fish habitathigh
#Q070monitoringoperationalmandatoryInstream Flow Study Requirementaquatic lifeIf the proponent proposes to divert large quantities of water to and from streams, perform an instream flow study (IFS).When proposing significant water diversionhigh
#Q071reportingreportingmandatorySubmission Formatting StandardsotherProponents must also ensure that submissions address the following: Ensure that all maps, figures, graphics, and tables are: properly labelled, provided with appropriate legends and scales, and legible and of the appropriate size to display the information being illustrated.Applicable to all technical submissionshigh
#Q072reportingreportingmandatoryFish and Fish Habitat Cumulative Effects Analysisaquatic lifeAnalyze the cumulative effects of impacts to fish and fish habitat.During Environmental Assessment reportinghigh
#Q073reportingreportingrecommendedHydrologic Analytical Methods DescriptionotherThe baseline study report should include descriptions of, references to, and rationales for the selected analytical methods used to derive hydrologic estimates from the data (e.g., project hydrometric data and other hydrometric or hydrologic data).During hydrologic baseline reportinghigh
#Q074reportingreportingrecommendedHydrologic Statistical Estimates ReportingotherThe results of all analyses should be accompanied by statistical estimates of parameter reliability and variability, error of the estimate, and/or confidence intervals.When reporting hydrologic analysis resultshigh
#Q075reportingreportingrecommendedHydrologic Data Visualization RequirementsotherThe presentation of hydrologic information should include hydrographs of all gauged and ungauged (if synthetic records are used) watersheds, flow duration curves, and graphical and tabular representations of frequency analyses, regionalizations, and stage-discharge curves.When presenting baseline hydrologic informationhigh
#Q076designoperationalmandatoryMonitoring Well Construction StandardsotherMonitoring well construction must conform to the minimum construction standards in the GWPR for permanent monitoring wells.During monitoring well installationhigh
#Q077monitoringoperationalrecommendedManual Water Level VerificationotherManual readings should be taken at every site visit and compared to data logger readings on-site to ensure equipment is functioning correctly.During hydrometric site visitshigh
#Q078designoperationalrecommendedBarometric Pressure CompensationotherIf non-vented pressure transducers are used, then a separate logger for barometric pressure should be deployed.When using non-vented transducers for groundwater level recordinghigh
#Q079operationaloperationalrecommendedMetal Sample Nitric Acid PreservationotherAll samples for total metals and all field-filtered dissolved metals samples should be preserved with nitric acid in the field.During groundwater quality sample collectionhigh
#Q080corrective_actionoperationalmandatoryHigh Turbidity QP AssessmentotherIf field turbidity exceeds the target (50 NTU), then a Qualified Professional (e.g., P.Eng. or P.Geo. with expertise in hydrogeology) must assess the reasons for high turbidity.When field turbidity in a monitoring well exceeds 50 NTUhigh
#Q081monitoringoperationalmandatoryFish Metric Documentationaquatic lifeMeasure and record species, size, weight, age, and sex (when distinguishable) and submit these data along with other monitoring data.During collection of captured fish for baseline studieshigh
#Q082monitoringoperationalrecommendedFish Barrier Integration Methodologyaquatic lifeThe assessment of fish barriers should integrate methodologies and data requirements described in Parker (2000).When determining fish distribution status at barriershigh

P Quantitative Requirements (77)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001operationaloperationalrecommendedField Turbidity - Low Flow Triggerotherrequirement> 50 NTULow-flow sampling techniques should be employed if field turbidity exceeds this value.During groundwater quality sample collection from monitoring wells.high
#P002physicaloperationalguidanceField Turbidity - Faulty Well Indicatorotherrequirement> 200 NTUTaken to indicate faulty monitoring well design or construction.During groundwater sample collection.high
#P003physicaloperationalrecommendedpH Stabilization LimitotherOG<= 0.1 unitsParameter must stabilize within this variance for three successive readings during purging.Well purging prior to groundwater sampling.high
#P004physicaloperationalrecommendedElectrical Conductivity Stabilization LimitotherOG<= 3 %Parameter must stabilize within this variance for three successive readings during purging.Well purging prior to groundwater sampling.high
#P005chemicaloperationalrecommendedDissolved Oxygen Stabilization LimitotherOG<= 10 %Parameter must stabilize within this variance for three successive readings during purging.Well purging prior to groundwater sampling.high
#P006physicaloperationalrecommendedTurbidity Stabilization LimitotherOG<= 10 %Parameter must stabilize within this variance for three successive readings during purging.Well purging prior to groundwater sampling.high
#P007chemicaloperationalrecommendedRedox Stabilization LimitotherOG<= 10 mVParameter must stabilize within this variance for three successive readings during purging.Well purging prior to groundwater sampling.high
#P008physicaloperationalrecommendedTemperature Stabilization LimitotherOG<= 0.2 °CParameter must stabilize within this variance for three successive readings during purging.Well purging prior to groundwater sampling.high
#P009operationalreportingguidanceSediment Sample Mass - Metals, TOC, Sulphurotherrequirement>= 10 gMinimum sediment volume necessary to conduct planned chemical tests.Sediment sampling for metals, TOC, and sulphur.high
#P010operationalreportingguidanceSediment Sample Mass - PAHotherrequirement5-10 gTypical sediment volume necessary to conduct PAH analysis.Sediment sampling for PAH.high
#P011operationaloperationalrecommendedSediment Sampling Depthotherrequirement2-3 cmCollect samples from a specific vertical depth into the substrate.At least in lotic environments.high
#P012physicalreportingmandatoryWater Quality Sample Storage Temperatureotherrequirement<= 6 °CStorage temperature requirement for various physical and chemical water quality samples.Sample preservation and handling.high
#P013operationalreportingmandatoryReviewable Project Trigger - New Metal Minesotherrequirement>= 75,000 tonnes per yearProduction capacity threshold for new metal mines to be reviewable under the EAA.New metal mines in British Columbia.high
#P014operationalreportingmandatoryReviewable Project Trigger - New Coal Minesotherrequirement>= 250,000 tonnes per yearProduction capacity threshold for new coal mines to be reviewable under the EAA.New coal mines in British Columbia.high
#P015physicalreportingguidelineDissolved Oxygen Precision Objectiveaquatic lifeOG+/- 1 mg/LSmallest increment that must be measured and reported for general water quality field measurements.Field measurements of surface or groundwater.high
#P016physicalreportingguidelinepH Precision Objectiveaquatic lifeOG+/- 0.01 pH unitsSmallest increment that must be measured and reported for general water quality field measurements.Field measurements of surface or groundwater.high
#P017operationalreportingrecommendedElectrofishing - Conductivity Conditionaquatic liferequirement> 10 uS/cmStream segments must be sampled using electrofishing if these conductivity conditions can be met.Fish inventory sampling in streams.high
#P018operationalreportingrecommendedElectrofishing - Temperature Conditionaquatic liferequirement> 7 °CStream segments must be sampled using electrofishing if these temperature conditions can be met.Fish inventory sampling in streams.high
#P019operationalreportingrecommendedElectrofishing - Visibility Conditionaquatic liferequirement> 25 cmStream segments must be sampled using electrofishing if these visibility conditions can be met.Fish inventory sampling in streams.high
#P020designoperationalguidanceInitial Dilution Zone Extentwastewaterrequirement<= 100 mNormal maximum distance from the point of effluent discharge for the initial dilution zone.Effluent mixing zone definition.high
#P021operationalreportingmandatoryReviewable Project Trigger - Sand and Gravel Pitsotherrequirement>= 500,000 tonnes per yearProduction capacity threshold for new sand and gravel pits to be reviewable under the EAA.New sand and gravel pits in British Columbia.high
#P022operationalreportingmandatoryReviewable Project Trigger - Placer Minesotherrequirement>= 500,000 tonnes per yearProduction capacity threshold for new placer mines to be reviewable under the EAA.New placer mines in British Columbia.high
#P023operationalreportingmandatoryEnvironmental Baseline Minimum Durationotherrequirement>= 12 monthsAbsolute minimum period for baseline data collection prior to application.All new mine development applications.high
#P024operationalreportingmandatorySurficial Hydrology Baseline Durationotherrequirement>= 2 yearsMinimum data collection period to evaluate the accuracy of rating curves and address gaps.Baseline hydrology studies for surface water flow.high
#P025operationalreportingrecommendedHydrometric Recording Intervalotherrequirement15 minutesFrequency for recording continuous water level (stage) data.Automated hydrometric monitoring sites.high
#P026operationalreportingmandatoryStage-Discharge Relationship - Minimum Data Pointsotherrequirement>= 10 data pointsMinimum number of measurements well distributed over the full range of flows.Development of a site-specific stage-discharge relationship (rating curve).high
#P027operationalreportingguidanceFish Tissue Sample Weightaquatic liferequirement>= 8 g wet weightGeneral minimum sample weight requirement for chemical analysis of fish tissues.Baseline tissue collection for fish.high
#P028operationalreportingguidanceBull Trout Baseline Lengthaquatic liferequirement< 10 cmSize restriction for bull trout collection to account for mobility and protected status.Baseline fish tissue collection of bull trout.high
#P029operationalreportingmandatorySurface Water Quality Frequency - Peak Fluctuationaquatic liferequirement5 samples in 30 daysWeekly sampling frequency during periods of maximum hydrograph fluctuation (e.g., freshet).Core baseline surface water sampling locations.high
#P030physicalreportingguidelineTemperature Field Measurement Precisionaquatic lifeOG+/- 0.1 °CSmallest increment for water temperature that must be measured and reported.Field measurements of surface or groundwater.high
#P031physicalreportingguidelineSpecific Conductance Precision ObjectiveotherOG+/- 2 uS/cmCore list of general water quality field measurements.Field measurements of surface or groundwater.high
#P032physicalreportingguidelineTurbidity Precision ObjectiveotherOG+/- 0.1 NTUCore list of general water quality field measurements.Field measurements of surface or groundwater.high
#P033physicalreportingguidanceTotal Suspended Solids (TSS) Detection Limit Objectiveotherrequirement2 mg/LDetection limit for each water quality parameter must be less than the respective WQG, ideally by one order of magnitude.Laboratory analysis of water samples.high
#P034chemicalreportingguidanceArsenic (As) Water Quality Detection Limit Objectiveotherrequirement0.2 ug/LDetection limit objective for water quality analytes.Laboratory analysis of water samples.high
#P035chemicalreportingguidanceSelenium (Se) Water Quality Detection Limit Objectiveotherrequirement0.3 ug/LDetection limit objective for water quality analytes.Laboratory analysis of water samples.high
#P036chemicalreportingguidanceTotal Organic Carbon (TOC) Sediment Detection Limit Objectiveotherrequirement0.05 %Parameters for laboratory analyses of sediments.Laboratory analysis of sediment samples.high
#P037chemicalreportingguidanceSelenium (Se) Sediment Detection Limit Objectiveotherrequirement0.1 ug/gParameters for laboratory analyses of sediments.Laboratory analysis of sediment samples.high
#P038chemicalreportingguidanceSelenium (Se) Tissue Detection Limit Objectiveaquatic liferequirement0.02 ug/gParameters for laboratory analyses of tissue residue in aquatic biota.Laboratory analysis of tissue samples.high
#P039operationaloperationalrecommendedStandard Wind Measurement Heightotherrequirement10 mWinds are typically measured at this height above ground, though measurements at higher elevations may be required depending on emission source.Air quality monitoring and dispersion modelling.high
#P040operationaloperationalguidanceLow Flow Design Recurrence Interval (7Q10)aquatic liferequirement10 yearsThe lowest annual and lowest summer stream flow for 7 consecutive days that would be expected to occur once in this interval.Protection of aquatic ecosystems flow situations.high
#P041operationalreportingguidanceWater Quality Mass Balance Confidence Boundotherrequirement90 %A 'reasonably conservative' statistical interpretation for predicting inputs to the water quality mass balance model.Predicting inputs to the water quality mass balance model.high
#P042operationalreportingrecommendedHydrogeology Baseline Frequencyotherrequirement>= 1 year of quarterly dataMinimum period required to assess seasonal variations during the initial project evaluation phase.Groundwater quality baseline studies.high
#P043operationalreportingrecommendedGroundwater Sampling Intervalotherrequirement60-120 daysSampling should be evenly spaced throughout the year.Quarterly groundwater sampling for baseline studies.high
#P044operationaloperationalrecommendedSensor Drift Recalibration Thresholdotherrequirement> 2 %Sensors should be recalibrated when sensor drift exceeds this value of the actual value.Continuous water level recording and sensor maintenance.high
#P045operationalreportingrecommendedMine Construction Turbidity Monitoringotherrequirementdaily measurementsDue to elevated risk of erosion and soil runoff during mine construction.Construction and early operational phases of a mine.high
#P046operationalreportingmandatorySediment Sample Preparation Drying Temperatureotherrequirement<= 60 °CSediments collected for metals analysis should be lab dried to a constant weight at this temperature.Sample handling for sediment metals analysis (BC SALM method).high
#P047operationalreportingrecommendedFish Tissue Replicate Minimumaquatic liferequirement8 replicates per siteNumber of replicates to describe statistically both within-site and between-site variability.Spatial Variance Program for fish tissue assessment.high
#P048operationalreportingmandatoryBenthic Macroinvertebrate Replicate Minimumaquatic liferequirement>= 5 replicates per siteRequired during the initial year of sampling if pilot data is not available.Baseline biological sampling for benthic macroinvertebrates.high
#P049operationalreportingmandatoryRemote Sample Delivery Time Limitotherrequirement<= 48 hoursSamples received from remote locations after this period must not be tested.Transport of microbiological samples to the laboratory.high
#P050operationalreportingmandatorypH Sample Holding Timeotherrequirement15 minutesMaximum duration between sampling and analysis for pH.Water quality sampling.high
#P051operationalreportingmandatoryAquatic Sediments Sampling Frequencyaquatic liferequirement>= 1 sample per yearSampling should be conducted through the baseline and operational phases during late summer low flow periods.Aquatic sediments baseline study.high
#P052operationalreportingmandatoryAquatic Life Baseline Durationaquatic liferequirement>= 1 complete surveyMinimum requirement for the baseline study, though two or more consecutive years are preferred.Benthic macroinvertebrates and periphyton baseline monitoring.high
#P053chemicalreportingguidanceCopper (Cu) Water Quality Detection Limit Objectivedrinking water, wastewater, agricultural water, aquatic life, recreational water, otherrequirement0.2 ug/LCore list of general water quality analytes and associated detection limit objectives.Laboratory analysis of water samples.high
#P054chemicalreportingguidanceCadmium (Cd) Water Quality Detection Limit Objectivedrinking water, wastewater, agricultural water, aquatic life, recreational water, otherrequirement0.01 ug/LCore list of general water quality analytes and associated detection limit objectives.Laboratory analysis of water samples.high
#P055chemicalreportingguidanceMercury (Hg) Water Quality Detection Limit Objectivedrinking water, wastewater, agricultural water, aquatic life, recreational water, otherrequirement0.01 ug/LCore list of general water quality analytes and associated detection limit objectives.Laboratory analysis of water samples.high
#P056chemicalreportingguidanceLead (Pb) Water Quality Detection Limit Objectivedrinking water, wastewater, agricultural water, aquatic life, recreational water, otherrequirement0.1 ug/LCore list of general water quality analytes and associated detection limit objectives.Laboratory analysis of water samples.high
#P057chemicalreportingguidanceZinc (Zn) Water Quality Detection Limit Objectivedrinking water, wastewater, agricultural water, aquatic life, recreational water, otherrequirement1 ug/LCore list of general water quality analytes and associated detection limit objectives.Laboratory analysis of water samples.high
#P058chemicalreportingguidanceCopper (Cu) Sediment Detection Limit Objectiveaquatic liferequirement0.5 ug/gParameters for laboratory analyses of sediments (reported as dry weight).Laboratory analysis of sediment samples.high
#P059chemicalreportingguidanceMercury (Hg) Sediment Detection Limit Objectiveaquatic liferequirement0.05 ug/gParameters for laboratory analyses of sediments (reported as dry weight).Laboratory analysis of sediment samples.high
#P060chemicalreportingguidanceLead (Pb) Sediment Detection Limit Objectiveaquatic liferequirement0.1 ug/gParameters for laboratory analyses of sediments (reported as dry weight).Laboratory analysis of sediment samples.high
#P061chemicalreportingguidanceCopper (Cu) Tissue Detection Limit Objectiveaquatic liferequirement0.01 ug/gParameters for laboratory analyses of tissue residue in aquatic biota.Laboratory analysis of tissue samples.high
#P062chemicalreportingguidanceMercury (Hg) Tissue Detection Limit Objectiveaquatic liferequirement0.002 ug/gParameters for laboratory analyses of tissue residue in aquatic biota.Laboratory analysis of tissue samples.high
#P063chemicalreportingguidanceLead (Pb) Tissue Detection Limit Objectiveaquatic liferequirement0.004 ug/gParameters for laboratory analyses of tissue residue in aquatic biota.Laboratory analysis of tissue samples.high
#P064operationalreportingmandatoryAcidity Sample Holding Timeotherrequirement14 daysMaximum storage duration before analysis in laboratory.Water samples stored at <=6°C.high
#P065operationalreportingmandatoryAlkalinity Sample Holding Timeotherrequirement14 daysMaximum storage duration before analysis in laboratory.Water samples stored at <=6°C.high
#P066operationalreportingmandatoryTotal Suspended Solids (TSS) Holding Timeotherrequirement7 daysMaximum storage duration before analysis in laboratory.Water samples stored at <=6°C.high
#P067operationalreportingmandatoryTotal Metals Water Sample Holding Timeotherrequirement180 daysMaximum storage duration before analysis in laboratory.Water samples preserved with HNO3.high
#P068designoperationalguidanceContinuous Water Level Recorder Resolutionotherrequirement< 5 mmRecommended resolution for continuous water level recording instruments to accomplish monitoring tasks.Groundwater quantity baseline monitoring.high
#P069physicalreportingguidelineRedox Potential Precision Objectiveaquatic lifeOG+/- 1 mVSmallest increment that must be measured and reported for general water quality field measurements.Field measurements of surface or groundwater.high
#P070chemicalreportingguidanceTotal Hardness Detection Limit Objectiveotherrequirement1 mg/LAnalytical detection limit objective for water quality assessment.Laboratory analysis of water samples.high
#P071chemicalreportingguidanceTotal Dissolved Solids (TDS) Detection Limit Objectiveotherrequirement10 mg/LAnalytical detection limit objective for water quality assessment.Laboratory analysis of water samples.high
#P072chemicalreportingguidanceArsenic (As) Sediment Detection Limit Objectiveaquatic liferequirement0.2 ug/gDetection limit objective for sediment analysis (dry weight).Laboratory analysis of aquatic sediment samples.high
#P073chemicalreportingguidanceCadmium (Cd) Sediment Detection Limit Objectiveaquatic liferequirement0.05 ug/gDetection limit objective for sediment analysis (dry weight).Laboratory analysis of aquatic sediment samples.high
#P074operationaloperationalrecommendedPeriphyton Replicate Minimumaquatic liferequirement10 replicatesRecommended default number of replicates to characterize periphyton community variability if a pilot assessment is not possible.Periphyton monitoring in rivers and streams.high
#P075physicaloperationalrecommendedPeriphyton Replicate Velocity Variationaquatic lifeOG< +/- 25 %Variation limit for near-bottom velocity within a replicate group to reduce variability and improve data interpretation.Selection of periphyton sampling points.high
#P076operationalreportingmandatoryBiochemical Oxygen Demand (BOD) Sample Holding Timeotherrequirement3 daysMaximum duration between sampling and analysis in the laboratory.Water samples stored at <=6°C.high
#P077operationalreportingmandatoryCyanide (SAD, WAD) Sample Holding Timeotherrequirement14 daysMaximum duration between sampling and analysis in the laboratory.Water samples stored in the dark at <=6°C with NaOH preservation.high

D Definitions (132)

Req ID Category Name Context Confidence
#D001baseline studiesinformation on relevant, pre-existing environmental conditions (i.e., before development) at the site of, or in the area surrounding, a proposed project, to determine actual project effects through comparisons with natural and existing conditions.high
#D002quality assuranceA system of activities whose purpose is to provide the producer or user of a product or service the assurance that it meets defined standards of quality with a stated level of confidence. It consists of two separate but related activities, quality control and quality assessment.high
#D003Baseline air qualitythe pre-construction ambient air quality resulting from both anthropogenic and natural emissions.high
#D004Periphytona broad assemblage of organisms composed of attached algae, fungi, and bacteria, their secretions, associated detritus, and various species of microinvertebrates that occur on the sediment surface, sometimes referred to as 'biofilm'.high
#D005Macrophytesaquatic plants that are often rooted or with roots and that have distinct component structures large enough to be visible to the naked eye.high
#D006cumulative effectsThe effect on the environment which results from effects of a project when combined with those of other past, existing, and imminent projects and activities. These may occur over a certain period of time and distance.high
#D007HADDany change in fish habitat that reduces its capacity to support one or more life processes of fish.medium
#D008AmbientWith respect to water quality, refers to a condition of site/watershed/waterbody that is not necessarily associated with episodic perturbations or disturbance caused by a given activity. This term is often used to describe the 'background' condition with respect to water quality, sediment, and biological characteristics. With respect to air quality, refers to the condition of the surrounding air.high
#D009AnisotropyThe property of being directionally dependent.high
#D010ApplicationAn application for an Environmental Assessment Certificate and a permit to construct/operate or carry on the activity that is filed by the proponent.high
#D011Benthic macroinvertebratesThe bottom-dwelling animals (without backbones) that are retained in mesh sized 200-500 micrometers or are visible by the unaided eye.high
#D012Biological assessment/bioassessmentAn evaluation of the biological condition of a site or waterbody using surveys of the structure and function of a community of resident biota.high
#D013BiotaThe total fauna and flora of a region; the populations of living organisms in general.high
#D014Community structureTaxonomic and quantitative attributes of a community, including species richness and relative abundance both structurally and functionally.high
#D015Designated water useA water use that is protected at a specified location and is for one of the following uses: drinking water, public water supply, and food processing; aquatic life and wildlife; agriculture (e.g., livestock watering and/or irrigation); recreation and aesthetics; and industrial water supply.high
#D016DischargeThe total amount of solid, liquid, or gaseous waste introduced into the environment from mining-related activities, including effluent and reclaimed water.high
#D017EcosystemAny complex of living organisms interacting with nonliving chemical and physical components that together form and function as a natural environmental unit.high
#D018GroundwaterSubsurface water at or below a water table in fully saturated geological materials and formations.high
#D019Initial dilution zoneThe three-dimensional zone around the point of discharge where mixing of the effluent and the receiving water occurs.high
#D020IsotropyExhibiting properties with the same values in all directions or uniformity in all directions.high
#D021Lentic systemsStanding freshwater habitats, environments, or ecosystems. They have no current, are non-moving, may be landlocked, are layered regions, and have greater biodiversity. Lakes and ponds are examples of lentic environments.high
#D022Lotic systemsRunning freshwater habitats, environments, or ecosystems. They have current, are moving, change in elevation, have constant water supply, can freeze, have no layered regions, and are well oxygenated. Rivers and streams are examples of lotic environments.high
#D023MitigationMeasures implemented to control, reduce, or eliminate a potential adverse impact of a project, including restorative measures.high
#D024Non-point sourceA combination of a variety of pollution sources that are diffused and difficult or too small to measure on an individual basis. Agriculture and forestry are examples of non-point sources of pollution. From an air quality perspective, emissions from cars, fireplaces, and lawnmowers are combined into the category of non-point sources.high
#D025Point sourceA single, stationary source of pollution that can be well defined. A pipe discharging effluent and a smokestack are examples of point sources. It is easy to measure and define the source of pollutants from a point source. It is also easy to regulate a point source using an effluent/emission permit process.high
#D026Specific storageThe amount of water that a portion of an aquifer releases from storage (per unit mass or volume of aquifer or per unit change in hydraulic head) while remaining fully saturated.high
#D027Water quality guidelineA maximum and/or minimum value for a physical, chemical, or biological characteristic of water, biota, or sediment that must not be exceeded. Water quality guidelines are developed in order to prevent specified detrimental effects from occurring to a water use, including aquatic life, under specified environmental conditions. The guidelines are applicable province-wide. The term 'water quality guideline' is equivalent to 'water quality criterion,' which the Province used in the past.high
#D028Water quality objectiveA guideline value adapted or adopted to protect the most sensitive designated water use at a specified location with an adequate degree of safety, taking local circumstances into account. In a given waterbody, each objective may be based on the protection of a different water use, depending on the water uses that are most sensitive to the characteristics of concern in that waterbody.high
#D029sensitive airshed1. An area of degraded air quality, where ambient levels are approaching or exceeding established air quality criteria adopted by the province. This may include provincial and national objectives and standards. 2. An area where the level of impact posed to the environment, human health, or quality of life (e.g., visibility impairment, plume blight, economic development, and odour) from air pollutants requires a more stringent regulatory approach than would normally be applied.high
#D030continuum modela model that looks at flow, chemical transport from a 'macroscopic' scale. It does not look at flow or transport in individual pores but treats the porous medium as a bulk entity.high
#D031discrete fracture modelcan incorporate characteristics of specific types of porosity (such as discrete fractures or faults) of the porous medium in modelling flow and transport, but usually requires these types of porosity to be well characterized.high
#D032Macrohabitatslengths of stream with similar channel characteristics, referred to as 'reaches' in RISC (2001a), in the Fish-Stream Identification Guidebook (BC MOF and BC MELP, 1998), and Johnston and Slaney (1996).high
#D033Mesohabitatssmaller habitat units defined by hydraulic characteristics. They typically include riffles, pools, glides, etc., as defined in Johnston and Slaney (1996), which also outlines standard methods for habitat surveys at this scale.high
#D034Microhabitatshabitat conditions at a specific vertical position on a cross-section. Variables measured quantitatively typically include depth, velocity, substrate, and cover.high
#D035harmful alterationan indefinite reduction in capacity while maintaining some of the habitathigh
#D036disruptiona short term reduction in capacityhigh
#D037destructionpermanent loss of capacityhigh
#D038Biological monitoring/biomonitoringA method of inferring the condition of a site by examining the organisms (e.g., algae, fish, benthic macroinvertebrates) that live there.high
#D039Environmental AssessmentThe process that provides a mechanism for reviewing major projects to assess their potential impacts. Addresses a broad range of environmental, economic, social, health, and heritage issues through a single, integrated process.high
#D040Environmental Assessment OfficeThe provincial body that manages the assessment of proposed major projects in British Columbia as required by the Environmental Assessment Act and regulations.high
#D041Environmental Assessment CertificateIf issued at the conclusion of an environmental assessment, allows a proponent to seek any other statutory authorizations needed to proceed with the project.high
#D042Fish HabitatSpawning grounds and nursery, rearing, food supply, and migration areas on which fish depend directly or indirectly in order to carry out their life processes.high
#D043Fish Habitat CompensationThe replacement of natural habitat or increase in the productivity of existing habitat where mitigation techniques and other measures are not adequate to maintain habitats for Canada's fisheries resources.high
#D044PM10 or PM2.5Particulate matter. PM10 refers to particles in the air with aerodynamic diameters smaller than 10 micrometers, and PM2.5 are particles with an aerodynamic diameter smaller than 2.5 micrometers.high
#D045PermitAn authorization for introduction of waste into the environment subject to requirements for the protection of the environment that the issuer considers advisable.high
#D046ProponentAny person or organization proposing to undertake a reviewable project in British Columbia, including the government of Canada, the government of British Columbia, a First Nation, a company, a municipality, a regional district, another province, or another jurisdiction.high
#D047Risk assessmentAn estimate of the probability that environmental or health problems will result from a particular activity.high
#D048Science-based environment benchmarka quantifiable receiving environment parameter or attribute protective of freshwater aquatic life that is developed by a qualified professional through a rigorous scientific process with the intent to inform management decisions and guide mitigative actions for a regulated mining activity at a specific location.high
#D049Specific yieldThe volume of water released by drainage (per unit area) from an aquifer as a result of a unit decline in groundwater level. For non-cohesive sediments or bedrock, the specific yield can be approximated as the effective porosity.high
#D050ABAacid base accountinghigh
#D051AIRApplication Information Requirementshigh
#D052ARDacid rock drainagehigh
#D053BACIbefore-after-control-impacthigh
#D054EEMenvironmental effects monitoringhigh
#D055MLmetal leachinghigh
#D056PAGpotentially acid generatinghigh
#D057WQOwater quality objectivehigh
#D058APacid potentialhigh
#D059ARD/MLacid rock drainage and metal leachinghigh
#D060ARISAssessment Report Indexing Systemhigh
#D061BCELTACBC Environmental Laboratories Technical Advisory Committeehigh
#D062BCGSBC Geological Surveyhigh
#D063CABINCanadian Aquatic Biomonitoring Networkhigh
#D064CALACanadian Association for Laboratory Accreditationhigh
#D065CaNPcarbonate neutralization potentialhigh
#D066CCMECanadian Council for Ministers of the Environmenthigh
#D067CEScumulative effects assessmenthigh
#D068CEAACanadian Environmental Assessment Agencyhigh
#D069CEAACanadian Environmental Assessment Acthigh
#D070CLIRCross-Linked Information Resourceshigh
#D071DFODepartment of Fisheries and Oceans (now Fisheries and Oceans Canada)high
#D072DLdetection limit (of a laboratory analysis)high
#D073EAOEnvironmental Assessment Officehigh
#D074EIRSEnvironmental Information Resources Systemhigh
#D075EMSEnvironmental Monitoring Systemhigh
#D076EPDEnvironmental Protection Division, Ministry of Environmenthigh
#D077FDISField Data Information Systemhigh
#D078FISSFisheries Information Summary Systemhigh
#D079FPCBCForest Practices Code of BChigh
#D080GSCGeological Survey of Canadahigh
#D081HSIHabitat Suitability Indexhigh
#D082IDFintensity-duration-frequencyhigh
#D083IFSInstream Flow Studyhigh
#D084ISOInternational Standards Organizationhigh
#D085MDRCMine Development Review Committeehigh
#D086MEMMinistry of Energy and Mineshigh
#D087MFLNROMinistry of Forests, Lands and Natural Resource Operationshigh
#D088NFCPNechako Fisheries Conservation Programhigh
#D089NNPnet neutralization potentialhigh
#D090NPneutralization potentialhigh
#D091NPRneutralization potential ratiohigh
#D092NRCanNatural Resources Canadahigh
#D093PAHpolycyclic aromatic hydrocarbonshigh
#D094PELprobably effect levelhigh
#D095PeWQOpreliminary water quality objectiveshigh
#D096QAquality assurancehigh
#D097QA/QCquality assurance/quality controlhigh
#D098QPqualified professionalhigh
#D099RCAreference condition approachhigh
#D100RISCResource Information Standards Committeehigh
#D101RMDRCRegional Mine Development Review Committeehigh
#D102SALMstrong acid leachable metalshigh
#D103SCCStandards Council of Canadahigh
#D104SHIMSensitive Habitat Inventory Mappinghigh
#D105SQGsediment quality guidelinehigh
#D106SWEsnow-water equivalenthigh
#D107TARTechnical Assessment Reporthigh
#D108TELthreshold effect levelhigh
#D109TOCtotal organic carbonhigh
#D110TRGtissue residue guidelinehigh
#D111TSStotal suspended solidshigh
#D112VECvaluable ecosystem componentshigh
#D113WIDMWater Information Data Management databasehigh
#D114WQGwater quality guidelinehigh
#D115WSCWater Survey of Canadahigh
#D116BC Water Quality Guidelinessafe levels of substances for the protection of a given water use, including drinking water, aquatic life, wildlife, recreation, irrigation, and agriculture.high
#D117Site-specific Water Quality Objectives (WQOs)numerical concentrations or narrative statements that establish the conditions necessary to support and protect the most sensitive designated use of water at a specified location.high
#D118EAenvironmental assessmenthigh
#D119EAAEnvironmental Assessment Acthigh
#D120EMAEnvironmental Management Acthigh
#D121MOEMinistry of Environmenthigh
#D122SBEBscience-based environmental benchmarkhigh
#D123HADDharmful alteration, disruption or destruction of fish habitat (as per Fisheries Act Canada)high
#D124Baseline studyInformation about relevant, pre-existing environmental, economic, social, heritage, and/or health conditions at the site of, or in the area surrounding, a proposed project to enable a determination of actual project effects through comparisons before and after development.high
#D125PeWQOspreliminary water quality objectives ... established ... for each priority contaminant based on the lowest WQG levels to protect the most sensitive water uses at the site.high
#D126initial dilution zonethe initial portion of the larger effluent mixing zone. The extent of an initial dilution zone is defined on a site-specific basis and considers water uses, aquatic life including migratory fish, and other waste discharges. Initial dilution zones are normally relatively small (e.g., up to 100 m from the point of effluent discharge, but not exceeding 25-50% of the width of the water body) and are essential to allow for the initial mixing between effluents and the receiving water.high
#D127Quantityincludes both water levels and groundwater flow.high
#D128MPAMine Permit Applicationhigh
#D129CEAA follow-up programtypically involves environmental effects monitoring, but it could also include an assessment of the accuracy of the assessment and the effectiveness of the mitigation.high
#D130monitoring wellanalogous to a piezometer.high
#D131observation wellanalogous to a piezometer.high
#D132No Net Lossproductive fish habitat is preserved under this principle; however, unavoidable habitat losses are balanced with compensatory habitat replacement or offsets on a project-by-project basis to prevent a net habitat loss.high