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Document ID ca-on-code-2020-11-20 Title Construction Dewatering URL unknown Jurisdiction /ca/on Subdomain(s) Regulations & standards, Draft regulations & public consultations Language en Status completed Analyzed at 2026-03-29 22:45:28.225238+00:00 Relevance This document provides feedback on proposed regulatory amendments for water taking.
2 Qualitative 12 Quantitative 0 Definitions

Q Qualitative Requirements (2)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001operationaloperationalguidanceConstruction Dewatering Recharge Routingwastewater, otherWhen possible, construction dewatering is directed to a low-lying area promoting recharge.When possiblemedium
#Q002administrativereportingrecommendedEASR Discharge Criteria and Mitigation Detailingwastewater, otherIt would be the responsibility of the qualified professional preparing the EASR to detail the applicable discharge criteria and mitigation measures prior to discharge within a proposed development area or within a natural area.Prior to discharge within a proposed development area or within a natural areahigh

P Quantitative Requirements (12)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001operationaloperationalmandatorydewateringotherrequirement<= 400,000 L/dayProposed amendments to allow up to 400,000 L/day for each pit based on its dewatering area of influence.Not including storm water in the EASR limit.high
#P002physicaltreatmentmandatoryTSSotherrequirement25 mg/LImplementation of a fixed TSS limit of 25 mg/L regardless of the distance between watercourse and discharge point.Applies to both groundwater and stormwater discharge.high
#P003physicaltreatmentmandatoryturbidityotherrequirement8 NTUImplementation of a fixed turbidity of 8 NTU regardless of the distance between watercourse and discharge point.Applies to both groundwater and stormwater discharge.high
#P004designtreatmentrecommendeddischarge distance thresholdwastewater, aquatic liferequirement30 mStantec suggests limits apply when discharge is within this distance of a watercourse.Within 30 m of a watercoursehigh
#P005physicaltreatmentrecommendedTSS relative background limitaquatic liferequirement10 %Proposed alternative limit based on watercourse background conditions.Applicable for discharge within 30 m of a watercoursehigh
#P006physicaltreatmentrecommendedturbidity relative background limitaquatic liferequirement10 %Proposed alternative limit based on watercourse background conditions.Applicable for discharge within 30 m of a watercoursehigh
#P007physicaltreatmentrecommendeddiversion seepage TSS limitwastewaterrequirement25 mg/LSuggested limit specifically for diversion seepage discharge.Seepage through barrier / pumped seepagehigh
#P008physicaltreatmentrecommendeddiversion seepage turbidity limitwastewaterrequirement8 NTUSuggested limit specifically for diversion seepage discharge.Seepage through barrier / pumped seepagehigh
#P009physicaltreatmentrecommendedsuggested TSS limit for discharge within 30mwastewater, aquatic liferequirement25 mg/LSuggested alternative limit specifically for discharge within 30 m of a watercourse.Within 30 m of a watercoursehigh
#P010physicaltreatmentrecommendedsuggested turbidity limit for discharge within 30mwastewater, aquatic liferequirement8 NTUSuggested alternative limit specifically for discharge within 30 m of a watercourse.Within 30 m of a watercoursehigh
#P011physicaltreatmentrecommendeddiversion seepage TSS background limitwastewater, aquatic liferequirement10 %Suggested alternative limit for diversion seepage based on watercourse background conditions.Seepage through barrier / pumped seepagehigh
#P012physicaltreatmentrecommendeddiversion seepage turbidity background limitwastewater, aquatic liferequirement10 %Suggested alternative limit for diversion seepage based on watercourse background conditions.Seepage through barrier / pumped seepagehigh

D Definitions (0)

No definitions.