Water quality permitting policies
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CW1 Clean Water 1 Reasonable Potential.
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CW2 Clean Water 2 Applicability of Nutrients Management Control Reg Dilution.
Exception for discharges to waters designated as Critical Habitat for Threatened and Endangered species. -
CW3 Clean Water 3 Permit Compliance Schedules.
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CW5 Discharge from Water-based fire suppression systems.
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CW6 Practical Quantitation Limits.
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CW7 Reporting of surface water discharge associated with residential and landscape irrigation.
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CW8 Colorado Nutrient Management Plan and 10-Year Water Quality Roadmap.
- WQP1 Permit Inactivation Policy Where a Discharge Remains.
- WQP2 Significant Digits in Permit Limitations.
- WQP4 401 Certification of 404 After the Fact Permit Application.
- WQP5 Permit Policy for Mining Activities.
- WQP8 Economic Reasonableness.
- WQP19 Policy for Characterizing Ambient Water Quality for use in Determining Water Quality Standards Based Effluent Limits.
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WQP20 Baseline Monitoring Frequency.
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WQP21 Guidelines for the Determination of Agronomic Rate for Application of Reclaimed Water Under Reg 84.
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WQP23 Procedures for Conducting Assessments for Implementation of Temperature Standards.
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WQP24 Implementing Narrative Standards in Discharge Permits for Protection of Irrigated Crops.
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WQP25 Monitoring and Reporting Requirements for Reclaimed Water Treatment Facilities.
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WQP26 Methodology for Determining Agronomic Rates for the Beneficial Use of Biosolids.
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WQP27 Low risk discharge policy.
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WQP28 Blending of Septage from (ISDS) With Biosolids.
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MOU Regarding Enhanced Coordination in implementing Colorado's Mixing Zone Rule (among CDPHE WQCD, U.S. Fish and Wildlife Services, and EPA)