| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|
| #Q001 | operational | unknown | guidance | Use of CWQG for Cadmium Risk Assessment | aquatic life | The ministry has advised users interested in assessing the risk of cadmium to aquatic organisms to use the Canadian Council of Ministers of the Environment (CCME) Canadian Water Quality Guideline (CWQG). | When assessing the risk of cadmium to aquatic organisms. | high |
| #Q002 | operational | unknown | guidance | Consideration of CWQG for Cadmium | other | The Ministry advises that users of water quality criteria to consider the CWQG for cadmium for the most up to date science. | When using water quality criteria for cadmium. | high |
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #P001 | chemical | unknown | guideline | cadmium | aquatic life | unknown | 0.017 ug/L | interim guideline value for the protection of freshwater life | derived using a safety factor of 0.1 on a concentration of 0.17 ug/L which impaired fecundity after 16 d in soft water | high |
| #P002 | chemical | unknown | guideline | Cadmium (Hardness-dependent) | aquatic life | requirement | 10exp{0.86[log(hardness)]-3.2} ug/L | Formula for site-specific derivation of the cadmium interim water quality guideline based on local water hardness | Hardness measured as calcium carbonate equivalents in mg/L | high |
| Req ID | Category | Name | Context | Confidence |
|---|---|---|---|---|
| #D001 | LC50 data | concentration of the contaminant which is lethal to 50% of the tested species after a specified time | high | |
| #D002 | ERO | Environmental Registry of Ontario | high | |
| #D003 | CWQG | Canadian Water Quality Guideline | high | |
| #D004 | CCME | Canadian Council of Ministers of the Environment | high | |
| #D005 | CWQGs | Canadian Water Quality Guidelines | high | |
| #D006 | PWQOs | Provincial Water Quality Objectives | high | |
| #D007 | PWQO | Provincial Water Quality Objective | high | |
| #D008 | hardness | calcium carbonate equivalents in mg/L | high | |
| #D009 | r | correlation coefficient | high |