| #Q001 | administrative | operational | mandatory | Obtain Permit to Take Water | other | Companies or organizations who take over 50,000 litres of water/day from a lake, river, stream or groundwater source, must obtain a Permit to Take Water from the Ministry of the Environment -with a few exceptions. | Applies to companies or organizations who take over 50,000 litres of water/day from a lake, river, stream or groundwater source | high |
| #Q002 | reporting | reporting | mandatory | Record Daily Water Taking | other | Permit holders are legally required to record how much water they take each day. | Applies to Permit holders | high |
| #Q003 | administrative | operational | mandatory | Confirm Proceeding Without Subwatershed Plan | other | The decision to proceed without a subwatershed plan must be confirmed with the approval agencies. | Where a development is allowed to proceed without subwatershed planning | high |
| #Q004 | design | operational | mandatory | Resource Mapping Preparation | other | Resource mapping, as described in Appendix A, must be prepared since there will not be any commensurate mapping from a subwatershed plan. | In the absence of watershed/subwatershed planning | high |
| #Q005 | administrative | operational | mandatory | Approval for Basic Treatment Level | aquatic life | Proponents proposing basic treatment must seek approval from the appropriate agencies with fisheries and habitat management responsibilities with clear rational and site-specific supporting data collected from baseline studies or from existing resource management agency data bases (such as, fishery management plans, watershed management plans, etc.). | When proposing basic treatment level protection | high |
| #Q006 | monitoring | reporting | mandatory | Calculation of By-pass Suspended Solids Removal | other | For SWMPs designed with a by-pass, the calculation of long-term suspended solids removal must be based on both suspended solids removal in the facility plus suspended solids by-passed around the facility. | For Stormwater Management Practices designed with a by-pass | high |
| #Q007 | prohibition | operational | mandatory | Peak Flow Rate Limitation | other | maximum peak flow rates must not exceed pre-development values for storms with return periods ranging from 2 to 100 years. | For storms with 2 to 100 year return periods | high |
| #Q008 | monitoring | operational | mandatory | Site-Specific Peak Flow Determination | other | Peak flow rates must be determined on a site by site basis. | Site development and planning | high |
| #Q009 | administrative | operational | mandatory | Mandatory Subdivision Site Planning | other | In the absence of watershed/subwatershed planning, subdivision/site planning must occur to ensure that the development is planned with due regard to the surrounding environment. | In the absence of watershed/subwatershed planning | high |
| #Q010 | operational | operational | mandatory | Model Input Quality Assurance | other | It is important to stress that care must be taken not to accept results which cannot be defended because of poor quality input to a model. | When using a groundwater or hydrologic modelling approach | high |
| #Q011 | design | operational | recommended | Site-Specific Water Balance Calculation | other | Water balances should be calculated on a site by site basis. | | high |
| #Q012 | design | operational | recommended | Adherence to Environmental Management Plans | aquatic life | The level of water quality protection given in watershed management plans, fisheries management plans, official plans, official plan amendments, plans of subdivision, site plans, or other environmental management plans should be adhered to when designing stormwater management facilities. | During design of stormwater management facilities | high |
| #Q013 | administrative | operational | recommended | Biologist Consultation for Protection Level | aquatic life | However, the decision regarding the level of protection needed should be made based on input from a qualified aquatic biologist. | In the absence of established watershed management plans | high |
| #Q014 | administrative | operational | recommended | Subwatershed Plan Trigger for Recreational Waters | recreational water | In instances where the proposed development is greater than or equal to 10% of the drainage area discharging to a swimming or other recreational area of concern, a subwatershed plan should be undertaken to address the cumulative impact of development. | Proposed development >= 10% of drainage area discharging to recreational area | high |
| #Q015 | administrative | operational | recommended | Consultation for Temperature Mitigation | aquatic life | Where temperature is a significant concern it is recommended that the designer consult with the local conservation authority, the federal Department of Fisheries and Oceans (Fisheries and Habitat Management) and the Ontario Ministry of Natural Resources, during the design process. | Where temperature is a significant concern for cold water streams | high |
| #Q016 | design | operational | mandatory | Expert Integration Requirement | other | In order to provide an effective approach to designing a stream system that provides or emulates natural stream qualities, the necessary expertise must be available and integrated in the design process; | For stream system design and erosion control measures | high |
| #Q017 | design | operational | recommended | Downstream Peak Flow Impact Assessment | other | The potential impacts of site attenuated runoff on downstream watershed peaks should be calculated on a site by site basis. | | high |
| #Q018 | administrative | operational | recommended | Agency Consultation for Downstream Distance | aquatic life | Responsible agencies should be contacted early in the design process in order to establish a reasonable downstream distance based on specific studies and local conditions. | Where no subwatershed plan or fisheries information is available | high |
| #Q019 | treatment | health | recommended | Enhanced Protection for Sensitive Habitat | aquatic life | Enhanced protection or greater should be used when sensitive aquatic habitat will be impacted by end-of-pipe discharge. | When sensitive aquatic habitat will be impacted by end-of-pipe discharge | high |
| #Q020 | monitoring | operational | mandatory | Mandatory Habitat Examination and Sampling | aquatic life | This will require examination of the existing receiving water aquatic habitat and its interaction with the surrounding terrestrial habitat through instream sampling, soil type delineation, vegetation cover, and existing aquatic species inventory as required to justify the level of protection. | As required to justify the level of protection based on site-specific conditions | high |
| #Q021 | design | operational | recommended | Protection Level Selection Basis | aquatic life | the level of protection should be based on site-specific conditions determined through quantification of pre-development suspended solids loadings to receiving waters and the sediment loading characteristics of the receiving waters. | In the absence of existing watershed or management plans | high |
| #Q022 | operational | operational | mandatory | Downstream Peak Flow Overcontrol | other | Controlling post-development peak flow rates through storage to values less than pre-development conditions (overcontrol) may be required to maintain existing downstream watershed peak flow rates. | If needed to maintain existing downstream watershed peak flow rates | high |
| #Q023 | design | operational | recommended | Feasibility Confirmation of SWM Alternatives | other | It should be confirmed that the proposed alternatives are feasible. | During the development of stormwater management practice alternatives | high |
| #Q024 | administrative | reporting | guidance | MTO Approval Verification | other | Land development proposals may require approvals from the Ministry of Transportation (MTO) before proceeding. | If stormwater is discharged to a highway drainage system | high |
| #Q025 | prohibition | health | mandatory | Fisheries Act Prohibition | aquatic life | The federal Fisheries Act prohibits "the deposit of a deleterious substance of any type in water frequented by fish or in any place under any conditions where the deleterious substance or any other deleterious substance that results from the deposit of the deleterious substance may enter any such water" (subsection 36(3)). | Applies to all potential deposits in water frequented by fish | high |
| #Q026 | corrective_action | health | guidance | Habitat Compensation Requirement | aquatic life | Agencies with fisheries responsibilities may also require habitat compensation where stormwater management design impacts are determined to result in harmful alteration, disruption, or destruction of fish habitat as defined in the Fisheries Act. | Where design impacts result in harmful alteration, disruption, or destruction of fish habitat | high |
| #Q027 | design | treatment | recommended | Total Drainage Area Sizing Inclusion | other | It should be noted that the total drainage area contributing to the facility should be included in sizing (lumped imperviousness or separate calculations for internal and external drainage areas is permissible) in most cases. | When sizing water quality facilities | high |
| #Q028 | administrative | operational | mandatory | Simplified Design Approach Agreement | other | Application of the Simplified Design Approach requires agreement by both the reviewing agency and the proponent of the development. | When opting for the Simplified Design Approach for erosion control | high |
| #Q029 | design | operational | mandatory | Downstream Impact Modeling Requirement | other | Computer simulation modelling will still be required to determine the impact of post- development attenuated runoff on peak flow rates at locations downstream of the site. | Required for water quantity/peak flow rate determination | high |
| #Q030 | design | operational | recommended | Lot Level and Conveyance Control Utilization | other | lot level and conveyance controls should be utilized to the extent possible in order to maintain the pre-development hydrologic regime and reduce the size of the end-of-pipe facilities. | During stormwater management design planning | high |
| #Q031 | design | treatment | guidance | Storage Volume Sizing Methodology | other | For levels of imperviousness below 35%, required storage volumes may be obtained by extrapolating the values provided in Table 3.2. For levels of imperviousness between those included in Table 3.2, required storage volumes may be obtained by interpolation. | When determining water quality storage requirements based on receiving waters | high |
| #Q032 | design | treatment | guidance | Downstream Pond Active Storage Compensation | other | more frequent overflows will occur from the most downstream pond, but this can be compensated for by doubling the water quality active storage volume from 40 to 80 m3/ha. | When an external drainage area is controlled by a separate water quality facility and ponds are in series | high |
| #Q033 | design | treatment | mandatory | Peer-Review for Alternative SWMP Sizing | other | The sizing for these SWMP types is to be determined based on performance results that have been peer-reviewed. | For any SWMP type not explicitly included in Table 3.2 | high |
| #Q034 | administrative | operational | mandatory | Precedence of Existing Management Plans | other | If a Subwatershed or Environmental Management Plan already exists for the proposed development area, then these Plans take precedence. | When selecting design approaches for end-of-pipe facilities | high |
| #Q035 | administrative | reporting | mandatory | Source Protection Committee Notice to Municipality | drinking water | If any part of a municipality is included in a source protection area, the source protection committee shall give the clerk of the municipality notice when the committee begins preparation of the terms of reference for the source protection area. | When the committee begins preparation of the terms of reference | high |
| #Q036 | administrative | reporting | mandatory | Assessment Report Record Retention | drinking water | A source protection committee shall retain every record that it creates or acquires for the purpose of preparing or updating an assessment report for a period of 15 years after the later of the following dates: 1. The date the record is created or acquired. 2. The date the assessment report is approved by the Director under section 17 or 19 of the Act. | Records created or acquired for assessment report preparation or updating | high |
| #Q037 | design | operational | mandatory | SP Plan Objective - Significant Threats | drinking water | Every source protection plan shall set out the following as objectives of the plan: ... 2. To ensure that, for every area identified in an assessment report as an area where an activity is or would be a significant drinking water threat, i. the activity never becomes a significant drinking water threat, or ii. if the activity is occurring when the source protection plan takes effect, the activity ceases to be a significant drinking water threat. | Mandatory objectives for all source protection plans | high |
| #Q038 | administrative | operational | mandatory | Risk Management Plan Transfer Consent | drinking water | Every risk management plan shall contain a provision stating that it cannot be transferred to another person without the written consent of the risk management official. | Standard requirement for all risk management plans | high |
| #Q039 | reporting | health | mandatory | Drinking Water Health Hazard Notification Procedure | drinking water | A person who is required to notify the Ministry under subsection 89 (1) of the Act shall do so by telephoning the Ministry’s Spills Action Centre (1-800-268-6060) and providing the following information to the person who answers: 1. The person’s name and telephone number. 2. The fact that the purpose of the telephone call is to comply with section 89 of the Act. 3. A description of the location where the substance is being discharged or is about to be discharged, including the municipal address, if the municipal address is known. 4. The drinking water system into whose raw water supply the substance is being discharged or is about to be discharged. 5. The date and time that the person became aware of the discharge. 6. The substance that is being discharged or is about to be discharged, if the substance is known. 7. The amount of the substance that is being discharged or is about to be discharged, if the amount is known. 8. The reasons for the person’s opinion that, as a result of the discharge, an imminent drinking water health hazard exists. | When an imminent drinking water health hazard discharge is discovered while exercising power of entry | high |