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Archived Nutrient Criteria Work Group

2012

Nutrient Criteria - Northeast Regulators Proposal Regarding Regulations on Nutrient Pollution.pdf - Jan 3

Meeting Agenda - Questions Regarding Regulations 31 and 85.pdf - Jan 9

Nutrient Criteria - USEPA R5 Illinois Permit Letter.pdf - Jan 21

2011

Nutrient Criteria - Draft Scope of Work for Nutrients Cost-Benefit Analysis.pdf - Feb 2

Nutrient Criteria - Draft Nutrient Cost-Benefit Study Schedule - Revised.pdf - Feb 2

Nutrient Criteria - Nutrients Section 31.17.pdf - Feb 2

Nutrient Criteria - State of Colorado Regarding Initial Draft Regulatory Language for WQCD Nutrients Proposal.pdf - Feb 2

Nutrient Criteria - CDOHE and WQCC Regarding Regulation 85.pdf - Feb 2

Nutrient Criteria - CDPHE and WQCC Regarding Regulation 85.pdf - Feb 2

Nutrient Criteria - MWRD Comments Regarding Draft of Nutrients Proposal on Colorado Regulation 85.pdf - Feb 8

Nutrient Criteria Meeting Agenda - Section 31.17 and Regulation 85.pdf - Feb 14

Nutrient Criteria - Nutrients Cost-Benefit Request for Proposal.pdf - Feb

Nutrient Criteria CNC - Request for Proposal.pdf - Feb 11

Nutrient Criteria CNC - Initial Comments on Draft Interim Numeric Values, Protected Water Supply Proposal and Control Requlation.pdf - Feb 11

Nutrient Criteria CWUC Comment - Cost-Benefit Analysis Scope of Work Regarding Nutrient Regulation.pdf - Feb 11

Nutrient Criteria Comments - Clifton Sanitation District Regarding Nutrients Regulation Cost-Benefit Analysis Request for Proposal.pdf - Feb 7

Nutrient Criteria - Town of De Beque Regarding Draft Regulations 31.17 and 85.pdf - Feb 18

Nutrient Criteria - Letter from Colorado Water Utility Council Regarding Changes to Regulation 31 and Regulation 85.pdf - Feb 23

Nutrient Criteria - EPA Floats Draft Guide for Setting Controversial Site-Specific Nutrient Limits.pdf - Feb 28

Nutrient Criteria - EPA Launches Novel Effort to Impose Strict Numeric Nutrient Limits in States.pdf - Feb 28

Nutrient Criteria - WQCD Major Issues and Comments Regarding Drafts of Regulation 85 and Section 31.17.pdf - Feb

Nutrient Criteria - Feb 24 Comments from Town of Nucla Town Regarding Nutrient Removal.pdf - March 1

Nutrient Criteria - Letter from USEPA Regarding State Adoption of Numeric Nutrient Criteria for Nitrogen and Phosphorus.pdf - March 1

Nutrient Criteria - USEPA Comments on Draft for Regulations 31 and 85.pdf - March 3

Nutrient Criteria - Harvey Curtis & Associates Regarding February Draft of Nutrient Regulations.pdf - March 4

Nutrient Criteria - CDPHE Regarding the February Draft of the Proposed Control Regulation 85.pdf - March 4

Nutrient Criteria - South Platte CURE Regarding Proposed Regulation 85 Nutrients Management Control Regulation.pdf - March 4

Nutrient Criteria - City of Golden Comments on Regulation 85, Nutrients Management Control Regulation.pdf - March 4

Nutrient Criteria - Vranesh and Raisch Regarding Comments on Draft Nutrient Regulation Proposal.pdf - March 4

Nutrient Criteria - Maynes, Bradford, Shipps & Sheftel to Division Regarding Comments on the February Draft of Nutrient Regulations.pdf - March 7

Nurtrient Criteria - City of Boulder Regarding February Draft of Regulation 85 Nutrients Management Control Regulations.pdf - March 7

Nutrient Criteria - CNC Comments on WQCD February Draft of Regulation 31 and 85.pdf - March 7

Nutrient Criteria - Memo to WQCD - Regarding Draft Versions of Nutrient Regulations 31.17 and 85.pdf - March 7

Nutrient Criteria - Metro Comments on Initial Draft Regulatory Language for Water Quality Control Division Nutrients Proposal.pdf - March 7

Nutrient Criteria - ERWSD Comments on the Draft Nutrients Management Control REgulation 85.pdf - March 9

Nutrient Criteria Meeting Agenda - Web posting, Organization of Major Issues, Regulation 85, and Section 31.17.pdf - March 14

Nutrient Criteria - USEPA Regarding Working in Partnership with States to Address Phosporus and Nitrogen Pollution Through Use of a Framework for State Nutrients.pdf - March 16

Nutrient Criteria - Effluent Limits Subgroup - Meeting Minutes - March 28

Nutrient Criteria - MWRD 20110328 PWSR Framework (2).pdf - March 28

Nutrient Criteria - Nutrient Cost-Benefit Study Authority Draft Request for Proposals.pdf - March

Nutrient Criteria - Ridgeway Regarding Adoption of Recommendations in Draft of Regulation 85.pdf - March

Nutrient Criteria - Black Hawk/Central City Sanitation District 2010 Data for 2000 ICA - BHCCSD TP and TIN Results.xls - March

Nurtrient Criteria - 2010 Letter from Black Hawk/Central City Sanitation District Regarding Nutrient Standards and Effluent Numbers.pdf - March

Nutrient Criteria - WQCD 20110303 Cost-Benefit Study RFP.pdf - March

Nutrient Criteria - WQCD 20110314 NCWG Agenda.pdf - March

Nutrient Criteria - WQCD 20110315 Major Issues and Comments.pdf - March

Nutrient Criteria - WQCD 20110407 Reg 31 85 Div Resp to Comments(2).pdf - March

Nutrient Criteria - WQCD 3-28-11 Effluent Limit Subgroup Agenda.pdf - March

Nutrient Criteria - WQCD 20110314 Reg 85 Monitoring Intent.pdf - March

Nutrient Criteria - WQCD 20110325 Nutrient Monitoring Subgroup Contact.pdf - March

Nutrient Criteria - WQCD 20110329 Monitoring Subgroup Agenda.pdf - March

Nutrient Criteria Meeting Agenda - Covering Regulation 85, Section 31.17, and Cost-benefit Study Update.pdf - April 23

Nutrient Criteria - Data Summary on the Average Chlorophyll in Colorado Lakes.xlsx - April

Nutrient Criteria - WQCD 20110315 Major Issues and Comments (2).pdf - April

Nutrient Criteria - WQCD 20010401 Potential PWSR Data.pdf - April

Nutrient Criteria - WQCD 20010401 PWSR Data Summary.pdf - April

Nutrient Criteria - WQCD 20110401 PWSR Subclass Description.pdf - April

Nutrient Criteria - WQCD 20110401 PWSR Subgroup Agenda.pdf - April

Nutrient Criteria - WQCD 20110509 Nutrients Work Group Agenda (2).pdf - May 9

Nutrient Criteria Presentation - SPARROW Modeling: Enhancing Understanding of the Nation's Water Quality.pdf - May

Nutrient Criteria Abstract - SPARROW: Modeling Nutrient Transport in the Missouri River Basin, Applications and Management Implications.pdf - May

Nutrient Criteria - WQCD 20110506 Red 31 85 PWSR Options.pdf - May

Nutrient Criteria - WQCD 2011513 Monitoring Subgroup Agenda.pdf - May

Nutrient Criteria - WQCD 2011513 Regulation 85 Monitoring Requirements Information.pdf - May

Nutrient Criteria Meeting Schedule - Discussion on Applicability of Regulation 85.pdf - May

Nutrient Criteria Memo - CDPHE Presents a Proposal to Implement Nutrient Regulation in Colorado Based on a Basin Prioritization Approach.pdf - June 15

Nutrient Criteria Presentation - Cost/Benefit Study of the Impacts of Potential Nutrient Controls for Colorado Point Source Discharges.pdf - June 21

Nutrient Criteria Meeting Agenda - Nutrient Cost/Benefit Workshop 2 Presentation of Proposed Methodology.pdf - June 24

Nutrient Criteria Presentation - Nutrient Roundtables.pdf - July 11

Nutrient Criteria Meeting Agenda - Draft 2 of Section 31.17 and Regulation 85 and Nutrients Roundtable Alternative.pdf - July 11

Nutrient Criteria Presentation - Cost/Benefit Study of the Impacts of Potential Nutrient Controls for Colorado Point Source Discharges: Workgroup 3.pdf - July 14

Nutrient Criteria Meeting Agenda - Nutrient Cost/Benefit Workshop: Preliminary Pilot MU Methodology Results3.pdf - July 14

Nutrient Criteria Meeting Minutes - Nutrients Cost-Benefit Study.pdf - July 14

Nutrient Criteria - Upper Blue Sanitation District Regarding Draft Nutrient Management Control Regulation.pdf - July 15

Nutrient Criteria - Basin Roundatable Nutrient Management Proposal Regarding Nutrient Reduction Using Prioritization to Obtain Maximum Water Quality Benefit.pdf - July

Nutrient Criteria - WQCD 20110705 Reg 31.pdf - July

Nutrient Criteria - WQCD 20110705 Reg 85.pdf - July

Nutrient Criteria - WQCD-EPA Nutrients Option July 2011.pdf - July

Nutrient Criteria - Upper Clear Creek Watershed Association Regarding Draft Regulation 85.pdf - Aug 3

Nutrient Criteria - Metro Wastewater Reclamation District Regarding Draft Proposal for Statewide Nutrient Management, Regulation 31 and Regulation 85.pdf - Aug 3

Nutrient Criteria - USEPA Regarding Comments on the August 1 Cost Benefit Study.pdf - Aug 4

Nutrient Criteria - Rountable Concept to Nutrient Regulation.pdf - Aug 8

Nutrient Criteria - City of Arvada Comments on Regulation 31 and Regulation 85.pdf - Aug 8

Nutrient Criteria - Centennial Water & Sanitation District's Regarding July 2011 Draft of Regulation 85.pdf - Aug 8

Nutrient Criteria -Colorado Stormwater Council Regarding Comment on the July 5 Draft of Regulation 85.pdf - Aug 8

Nutrient Criteria - Leonard Rice Engineers Regarding Proposed Regulation 85, Nutrients Management Control Regulation of Eagle River Water and Sanitation District.pdf - Aug 8

Nutrient Criteria - Littleton/Englewood Wastewater Treatment Plant Regarding Comment son Draft Regulation 31.17 and Regulation 85.pdf - Aug 8

Nutrient Criteria - WaterJamin Legal Services Regarding Draft Amendments to Regulation 31 and Draft of Regulation 85.pdf - Aug 8

Nutrient Criteria - South Platte CURE Regarding Regulation 85 Nutrients Management Control Regulation Proposal.pdf - Aug 8

Nutrient Criteria - Tetra Tech 20110808 Regarding Regulation 85 Draft Control Regulation.pdf - Aug 8

Nutrient Criteria - Tri-State Generation and Transmission Association Regarding June 30 Nutrients Proposals for Regulation 31.13, Regulation 31.17 and Regulation 85.pdf - Aug 8

Nutrient Criteria - Xcel Energy Regarding July 5 Draft of Nutrient Proposal on Regulation 85.pdf - Aug 8

Nutrient Criteria - WQCD 20110808 Basin Roundtable Proposal Comments.pdf - Aug 8

Nutrient Criteria - USEPA Regarding Comments on the June 30 Draft Revisions to Regulation 31 and Regulation 85.pdf - Aug 9

Nutrient Criteria - City of Westminster Regarding Comments on Regulation 31 and Regulation 85.pdf - Aug 11

Nutrient Criteria - Colorado Springs Utilities Regarding CDPHE Revised Draft Regulation 31 and Regulation 85.pdf - Aug 12

Nutrient Criteria - Colorado Nutrient Coalition Regarding WQCD's Draft #2 of Regulation 31 and Regulation 85 Proposal.pdf - Aug 16

Nutrient Criteria - Colorado Nutrient Coalition Regarding Comments on July 2011 Regulation 31 and Regulation 85 Proposals.pdf - Aug 16

Nutrient Criteria - Colorado Nutrient Coalition Regarding July 2011 Regulation 31 and Regulation 85 Proposals.pdf - Aug 16

Nutrient Criteria - USEPA Regarding Comments on the Roundtable Concept.pdf - Aug 25

Nutrient Criteria Meeting Agenda - Nutrient Loading to Drinking Water Treatment, Rivers and Streams Nutrient Values, Recreational Use Nutrient Values, and Direct Use Water Supply Nutrient Values.pdf - Aug 29

Nutrient Criteria - WQCD 20110824 DUWS Chl Rec Advance Materials.pdf - Aug 29

Nutrient Criteria - WQCD 20110824 R and S Advanced Materials.pdf - Aug 29

Nutrient Criteria - WQCD 20110829 Nuisance Algae ppt.pdf - Aug 29

Nutrient Criteria - WQCD 20110829 Direct Use Water Supply Chlorophyll.pdf - Aug 29

Nutrient Criteria - WQCD 20110829 R and S Confounding Factors.pdf - Aug 29

Nutrient Criteria - WQCD 20110829 R and S Nuisance Algae.pdf - Aug 29

Nutrient Criteria - Town of Ridgeway Regarding Regulation 31 Changes.pdf - Aug

Nutrient Criteria - June 30 2011 Draft from SECWCD 20110808 Proposal Regarding Regulation 31.pdf - Aug

Nutrient Criteria - Use of the Semi-Annual Mean for Compliance.pdf - Aug

Nutrient Criteria - USEPA Region 8 Comments on the Proposal to Address Nutrients in Colorado Using a Roundtable Concept.pdf - Aug

Nutrient Criteria - Hall & Associates Regarding Draft Revisions to Regulation 31 and Regulation 85, and Comments on Roundtable Approach.pdf - Sept 15

Nutrient Criteria Meeting Minutes - Nutrient Criteria Direct Use Water Supply Discussion.pdf - Sept 16

Nutrient Criteria - Southwestern Water Conservation District Issues and Qustions for Discussion at Ssept 21 Technical Focus Group Meeting.pdf - Sept 21

Nutrient Criteria - Accouncement of WQCD Nutrient Work Group Session Regarding Technical Issues.pdf - Sept 21

Nutrient Criteria Meeting Agenda - Alternative Nutrients Regulation Proposals, Cost-Benefit Study Report, Wastewater Cost Results, Benefit Analysis Results, Stromwater Costs, and Elements of Regulatory Analysis.pdf - Sept 26

Nutrient Criteria Presentation - Cost/Benefit Study of the Impact of Potential Nutrient Controls for Colorado Point Source Discharges: Workshop 4.pdf - Sept 26

Nutrient Criteria - WQCD 20110930 Reg 31 redline.pdf - Sept 30

Nutrient Criteria - WQCD 20110930 Reg 31 SBP.pdf - Sept 30

Nutrient Criteria - WQCD 20110930 Reg 85 redline.pdf - Sept 30

Nutrient Criteria - WQCD 20110930 Reg 85 SBP.pdf - Sept 30

Nutrient Criteria - Nutrient Cost Benefit Study Stakeholder Workshop Comments_9-23-11.pdf - Sept

Nutrient Criteria - List of Outstanding Regulatory Analyses/Justiciations Needed to Support Regulation 31 and Regulation 85.pdf - Sept

Nutrient Criteria Meeting Agenda - Alternative Nutrients REgulatory Proposals, Division's Draft 3 of Regulation 31 Revisions, and Division's Draft 3 of Regulation 85 Proposal.pdf - Oct 12

Nutrient Criteria - Colorado Nutrient Coalition Regarding Request for Deferral of Mulemaking Hearing Pending Confirmation of Benefits and Needs for Nitrogetn Reduction and Water Supply Sub-Classification.pdf - Oct 19

Nutrient Criteria - Colorado Rural Communities Coalition Regarding Deferral fo Rulemaking Hearing Pending Completion of Cost/Benefit Study and Demonstration of Compliance with D2011-005 and Regulation HJR-1025.pdf - Oct 19

Nutrient Criteria - Colorado Springs Utilities Regarding Position on CNC's Request for Deferral of Rulemaking Hearing Pending Confirmation of Benefits and Needs for Nitrogen Reduction and Water Supply Sub-Classification.pdf - Oct 20

Nutrient Criteria - Basis for Development of Technology-Based Numeric Nutrient Limits in the Proposed Drafts of Regulation 85.pdf - Oct

Nutrient Criteria - Nutrient Limits Justification White Paper Appendices I and II FINAL 10-3-11.pdf - Oct

Nutrient Criteria - WQF Work Group Guidlines.pdf - Oct

Nutrient Criteria - State of Colorado Notice of Public Rulemaking Hearing Regarding Regulation 31 and Regulation 85.pdf - Oct

Nutrient Criteria - CWQCD Footnote Correction to Draft of Regulation 31.pdf - Oct

Nutrient Criteria - Colorado Nutrient Coalition Regarding Request for Deferral of Rulemaking Hearing Pending Confirmation of Benefits and Needs for Nitroget Reduction and Water Supply Sub-Classification.pdf - Oct

Nutrient Criteria - WQCD 20111102 Memo RE RMH Deferral Request.pdf - Nov 2

Nutrient Criteria - WQCD 20111102 Reg 31 SBP.pdf - Nov 2

Nutrient Criteria - WQCD 20111102 Reg 31.pdf - Nov 2

Nutrient Criteria - WQCD 20111102 Reg 85 SBP.pdf - Nov 2

Nutrient Criteria - WQCD 20111102 Reg 85.pdf - Nov 2

Nutrient Criteria - WaterJamin Legal Regarding Request that the Water Quality Control Commission Approve Notice for March 2012 Nutrients Rulemaking.pdf - Nov 8

Nutrient Criteria - Colorado Nutrient Coalition Regarding Notice for Nutrient Rulemaking.pdf - Nov 9

Nutrient Criteria - Metro Wastewater Reclamation District Regarding Proposed Deferral of March 2012 Nutrient Controls Rulemaking Hearing.pdf - Nov 9

Nutrient Criteria - Northern Colorado Water Conservancy District Regarding Deferral Request of Rulemaking Hearing Pending Confirmation fo Benefits and Needs for Nitrogen Reduction and Water Supply Sub-Classiciation.pdf - Nov 9

Nutrient Criteria - City of Westminster Regarding Request for Deferral of the March 2012 Nutrient Rulemaking Hearing.pdf - Nov 10

2010

Nutrient Criteria Meeting Agenda - Discussions on Science Issues from 25-8-204 Rivers and Streams.pdf - Feb 9

Nutrient Criteria Meeting Minutes - Regarding the Nature of Nutrients in Colorado's Waters and Nutrient Levels in Colorado's Waters Necessary to Protect Classified Uses.pdf - Feb 9

Nutrient Criteria - Update for Feb 9 Meeting Regarding Nutrient Criteria for Rivers and Streams.pdf - Feb 9

Nutrient Criteria Presentation - Part 1 - Rivers and Streams Proposed Nutrient Criteria.pdf - Feb 9

Nutrient Criteria Presentation - Part 2- Nutrients in Rivers and Streams.pdf - Feb 9

Nutrient Criteria - Metro Wastewater Reclamation District Information Presented in the Nutrient Criteria Workgroup.pdf - Feb 23

Nutrient Criteria - Memo from Aurora Water Regarding MS4 Nutrient Monitoring of Stormwater/ Stormwater BMPs.pdf - April 7

Nutrient Criteria Meeting Agenda - Discussions About Cost Issues from 25-8-204.pdf - April 13

Nutrient Criteria Presentation - Municipal Wastewater Treatment Considerations.pdf - April 13

Nutrient Criteria Presentation - Nutrient Removal Costs.pdf - April 13

Nutrient Criteria - Letter from USEPA to Wisconsin Department of Natural Resources Regarding Progress Toward Adoption of Numeric Water Quality Criteria for Nutrients.pdf - April 30

Nutrient Criteria - Agricultural Trends and BMPs Relative to Nonpoint Source Criteria Development.pdf - April

Nutrient Criteria - NACWA - Nutrients Technical Paper.pdf - April

Nutrient Criteria - Cost Data Contained in 2007 Release of BMP Database.xls - April

Nutrient Criteria - Best Management Practices to Prevent Nutrient Trnasport from Agricultural Fields.pdf - April

Nutrient Criteria - Pollutant Reduction Facilities in Cherry Creek Basic.pdf - April

Nutrient Criteria Meeting Agenda - Discussions About Benefits Issues from 25-8-204.pdf - May 5

Nutrient Criteria Presentation - Cyanobacteria: Why It's of Concern and the Benefits of Minimizing its Occurrence in Colorado Lakes and Reservoirs.pdf - May 11

Nutrient Criteria - Benefits of Nutrient Criteria from a Drinking Water Treatment Perspective.pdf - May 11

Nutrient Criteria - Response to Metro Wastewater Reclamation District's Questions About February Nutrient Work Group Presentations.pdf - May 20

Nutrient Criteria Presentation - Economic Values of Water Quality: Measures, Methods and Values.ppt - May

Nutrient Criteria - Benefits of Compliance with Nutrient Criteria:Montana's Approach.ppt - May

Nutrient Criteria Presentation - Water Quality Degradation of the South Platte River Because of Runoff from Multiple Sources.pdf - May

Nutrient Criteria Presentation - Nutrient Reduction Benefits for Policy Analysis.pdf - May

Nutrient Critiera Presentation - Nutrient Criteria in Colorado: Ecological and Recreational Benefits.pdf

Nutrient Criteria - Advanced Materials for Attainment and Impairment Thresholds for Aquatic Life Use Support.pdf - June 29

Nutrient Criteria Meeting Agenda - Discussions about Nutrient Criteria Update, Aquatic Life, Revised Approaches and Threasholds, Implementaiton Issue, and Initial Draft of Policy 2010-1.pdf - June 29

Nutrient Criteria - Colorado Nutrient Criteria Concept Paper 100622.pdf - June

Nutrient Criteria Presentation - Sustainability Analysis Factors and Facility Specific Cse Studies - Denver Nutrient Criteria Workshop.pdf - July 13

Nutrient Criteria Presentation - The Iceberg Model for Systems Thinking.ppt - July 13

Nutrient Criteria Meeting Agenda - Discussions About Sustainability Analysis Factors and Facility-Specific Case Studies, Water Quality Trading and Nutrients, Long-Term Bull's Eye for Nutrients, and WQCD Perspective and Regulatory Context.pdf - July 13

Nutrient Criteria Presentation - Metro Wastewater Reclamation District Sustainability Study.pdf - July 13

Nutrient Criteria Presentation - Wetlands and Other Mechanisms in the Context of Nutrient Credit Trading.pdf - July 13

Nutrient Criteria - City of Aurora Comments on the Nutrient Criteria Concept Paper.pdf - July 15

Nutrient Criteria - Metro Wastewater Reclamation District Comments on the Nutrient Criteria Concept Paper.pdf - July 15

Metro Wastewater Reclamation District Nutrient Concepts Flowchart.pdf

Nutrient Criteria Meeting Agenda - Discussions About Nutrient Criteria Concept Paper, Perspective on Mechanisms for Nutrient Influences on Aquatic Life, and Mechanisms for Nutrient Influences on Aquatic Life.pdf - Aug 10

Nutrient Criteria Presentation - Summary CNC Comments on Nutrient Concept Paper.pdf - Aug 10

Nutrient Criteria Presentation - Who is the Colorado Nutrient Coalition and Why Are We Here.pdf - Aug 10

Nutrient Criteria - USEPA Comments on Colorado Draft Nutrient Criteria Paper.pdf - Aug 10

Nutrient Criteria Presentation - Mechanisms: How Nutrients Affect Stream Ecosystems.pdf - Aug 10

Nutrient Criteria - CNC Comments on WQCD Nutrients Concept Paper.pdf - Aug 15

Nutrient Criteria - Colorado Nutrient Criteria Concept Paper Metro Comments.pdf - Aug

Nutrient Criteria Presentation - The River Runs Dry - South Platte Comparison in Brighton in 1999 and 2002.pdf - Aug

Nutrient Criteria - WQCD Nutrient Mechanisms Conceptual Model of Nutrient Effects on Stream Ecosystems.pdf - Aug

Nutrient Criteria - Colorado Nutrient Coalition Concept Proposal for Lakes and Reservoirs and Rivers and Srreams Draft.pdf - Sept 1

Nutrient Criteria Presentation - Development of Numeric Nutrient Criteria for Streams and Reservoirs.pdf - Sept 2

Nutrient Criteria Presentation - Colorado Nutrient Coalition Nutrient Criteria Proposal.pdf - Sept 8

Nutrient Criteria Meeting Agenda - Discussions Regarding Treatment Technologies, Performance and Cost, Alternative Nutrient Criteria Proposal, and Nutrient Coalition Alternative Proposal.pdf - Sept 8

Nutrient Criteria - Nutrient Removal Treatment - Technologies, Performance, and Costs.pdf - Sept 8

Nutrient Criteria - Nutrient Criteria Meeting.pdf - Sept 9

Nutrient Criteria - CWQD's Proposed Adoption of TN Critiera.pdf - Sept 23

Nutrient Criteria - City of Aurora Comments on Technologies, Performance and Costs for Wastewater Nutrient Removal Paper.pdf - Sept 30

Nutrient Criteria - Environmental Thresholds for Nutrients in Streams and Rivers of the Colorado Mountains and Foothills.pdf - Sept

Nutrient Criteria - EPA Comments on Colorado's Treatment Technology Document.pdf - Sept

Nutrient Criteria - Regional Summaries for New Jersey, Wisconsin, and New Mexico, and How They Could Apply to Colorado.pdf - Sept

Nutrient Criteria Discussion Draft - Total Phosphorus Implementation Concept.pdf - Oct 7

Nutrient Criteria - City and County of Denver Development of Statewide Nutrient Criteria.pdf - Oct 11

Nutrient Criteria Meeting Agenda - WQCD Updated Criteria Proposals.pdf - Oct 13

Nutrient Criteria Advance Material - High Quality Water Supply Reservoirs Use Classification and Criteria.pdf - Oct 13

Nutrient Criteria Advance Material - Nutrient Criteria.pdf - Oct 13

Nutrient Criteria - Email to Division on Backup Data Analyses.pdf - Oct 13

Nutrient Criteria Presentation - Nutrients and High Quality Water Supply Reservoirs.pdf - Oct 13

Nutrient Criteria Presentation - Nutrient Criteria for Lakes - Proposal Update.pdf - Oct 13

Nutrient Criteria Presentation - Update - Rivers and Streams Proposed Nutrient Criteria.pdf - Oct 13

Nutrient Criteria Paper - Metro Nutrients Proposal Issues List.pdf - Oct 20

Nutrient Criteria Meeting Notes - State-Wide Nutrient Control Regulation Alternative Nonpoint Source Management.pdf - Oct 29

Nutrient Criteria - Advantages of Regulating Bioavailable Nitrogen Rather Than Total Nitrogen for Protection of Water Quality in Colorado.pdf - Oct

Nutrient Criteria - USGS Information on Nutrients in Streams and Groundwater.pdf - Oct 2010

Nutrient Criteria - Maynes, Bradford, Shipps & Sheftel Request for Discussion of a Technical Review and Process for the Proposed Statewide Nutrient Criteria.pdf - Nov 2

Nutrient Criteria Letter - Possible Monitoring Requirements for Inclusion in a Nutrient Control Regulation.pdf - Nov 2

Nutrient Criteria Letter - Extra Protection for a Sub-Class of Water Supply Reservoirs.pdf - Nov 2

Nutrient Criteria CNC Letter -EPA's Letter to the Water Quality Control Division on the Need to Adopt Total Nitrogen Nutrient Water Quality Standards.pdf - Nov 5

Nutrient Criteria CNC Letter - Status of Alternative Proposal and Request for Independent Peer Review to Address Unresolved Technical Concerns with Proposals for Statewide Lakes and Streams Nutrient Criteria.pdf - Nov 8

Nutrient Criteria Letter - Possible Options for Setting Requirements for Smaller Entities Under a Nutrient Control Regulation.pdf - Nov 8

Nutrient Criteria Memo - Nutrient Criteria Development.pdf - Nov 8

Nutrient Criteria Meeting Agenda - Discussions on Metro District Alternative Proposal, and Southwestern District's Letter and Options for Addressing Issues.pdf - Nov 9

Nutrient Criteria Ringstrom Rebuttal - CDPHE Power Point Statements Taken Out of Context - Mechanisms: How Nutrients Affect Stream Ecosystems.pdf - Nov

Nutrient Criteria Presentation - Water Quality Control Division Technolgoies, Performance and Costs for Wastewater Nutrient Removal and Implementation Recommendations.pdf - Dec 6

Nutrient Criteria - CWRPDA Delay Request Letter - Regarding Nutrient Rulemaking.pdf - Dec 8

Nutrient Criteria Memo - State of Colorado CWRPDA Letter to Commission Requesting Delay in Nutrient Criteria.pdf - Dec 13

Nutrient Criteria - MWRD Proposed Revisions to Reservoir Subclassification.pdf - Dec

Nutrient Criteria - WQCD 21001124 Criteria Development Response to SWCD.pdf - Dec

WQCD Reschedule Memo.pdf

2009

Nutrient Criteria Meeting Minutes - Aquatic Life Use Refinement, Nutrient Criteria for Rivers and Streams, Nutrient Criteria for Lakes and Reservoirs, Nutrient Criteria for Direct Use Water Supply Reservoirs, and Colorado Mining Association Issues.pdf - Aug 19

Nutrient Criteria - State of Colorado Memo Nutrient Criteria Development.pdf - Nov 9

Nutrient Criteria Meeting Minutes - Science Questions, Costs and Tradeoffs, and Benefits.pdf - Nov 16

2008

Nutrient Criteria - Metro Wastewater Reclamation District NRDC Petition for Rulemaking on Secondary Treatment Standards for Nutrient Removal.pdf - Jan 16

Nutrient Criteria Meeting Minutes - Aquatic Life 101, Status of Bioassessment Tool Development, Lake and Reservoir Nutrient Criteria Development, EPA Request to Explore Nutrient BAT.pdf - Jan 23

Nutrient Criteria - Meeting Attendees.pdf - Jan 23

Nutrient Criteria - Lake Nutrient Criteria Development: Observations Based on Statewide Data.pdf - Jan 23

Nutrient Criteria - Rivers and Streams Nutrient Criteria.pdf - Jan 23

Nutrient Criteria - Nutrient Criteria for Lakes and Reservoirs.pdf - Jan 30

Nutrient Criteria - ASIWPCA Letter from Nov 26 2007 Regarding Technology Thresholds for Nutrients.pdf - Jan

Nutrient Criteria - The Causes of Hypoxia in the Northern Guld of Mexico.pdf - Jan

Nutrient Criteria - Aquatic Life Use Refinement.pdf - Jan

Nutrient Criteria - NRDC Letter of Nov 27 2007 Regarding a Petition for Improvements to the EPA's Secondary Treatment Requirements for Wastwater Treatment Plants.pdf - Jan

Nutrient Criteria - Direct Use Water Supply Lakes and Reservoirs.pdf - Aug 11

Nutrient Criteria - Rivers and Streams Method Comparison Study.pdf - Aug 11

Nutrient Criteria - Possible Regulatory Revisions for Direct Use Water Supply Use Classification.pdf - Aug 27

Nutrient Criteria - Status Report on Control Regulation Lakes.pdf - Aug

Nutrient Criteria Meeting Minutes - Aquatic Life Use Refinement.pdf - Nov 18

Nutrient Criteria - Bioassessment Tools.pdf - Nov 18

Nutrient Criteria - Colorado Bioassessment Tool Development.pdf - Nov 18

Nutrient Criteria - April 28 2008 Letter from TetraTech Regarding General Reponse to Common Concerns with the Endpoint Approach Developed for TP TMDLS in Pennsylvania.pdf - Nov 18

Nutrient Criteria - Rivers and Streams 304(a) Nutrient Criteria Presentation from April 15 2008.pdf - Nov 18

Nutrient Criteria - Looking Towards Biocriteria.pdf - Nov

2007

Nutrient Criteria - Nutrient Criteria for Lakes and Reservoirs.pdf - March 16

Nutrient Criteria - State of Colorado Letter Regarding March 16 Nutrient Criteria Development Meeting.pdf - March 26

Nutrient Criteria - Defining the Growing Season.pdf - May 16

Nutrient Criteria - EPA's 2007 Nutrient Policy Memo.pdf - May

Nutrient Criteria - Colorado Lake Nutrient Criteria: A Proposal.pdf

Nutrient Criteria - Lewis EPA 227 Presentation.zip

Nutrient Criteria - Macroinvertebrate MMI.pdf

Nutrient Criteria - Milestones and Proposed Schedule for Nutrient Criteria Workgroup 2004 - 2012.pdf

Nutrient Criteria - Flow for Developing Nutrient Criteria in Rivers and Streams.pdf

Nutrient Criteria - Nutrient Criteria Workgroup Meeting Draft.pdf - June 14

Nutrient Criteria - Defining the Growing Season.pdf - June 14

Nutrient Criteria - Revision of March 16 2007 Nutrient Criteria for Lakes and Reservoirs.pdf - June 14

Nutrient Criteria - Colorado Wastewater Utility Council Nutrient Criteria Issues.pdf - June 14

Nutrient Criteria - Nutrients Criteria for Rivers and Streams Development Update.pdf - June 27

Nutrient Criteria - 2007 Progress Report and Update.pdf - Oct 5

Nutrient Criteria Meeting Minutes - Nutrient Criteria for Rivers and Streams, Linking Aquatic Life to Nutrients, Nutrient Criteria for Lakes and Reservoirs, Dissolved Oxygen in Lakes and Reservoirs, and Direct Water Supply Sub-group Overview.pdf - Oct 23

Nutrient Criteria Meeting Agenda.pdf - Oct 23

Nutrient Criteria - Dissolved Oxygen Standards: Background, Data Collection and Data Analysis.pdf - Oct 23

Nutrient Criteria presentation - Dissolved Oxygen in Lakes: Background, Data Collection, and Analysis.pdf - Oct 23

Nutrient Criteria Presentation - Fishery Quality as a Surrogate for Protection of Aquatic Life Uses.pdf - Oct 23

Nutrient Criteria Presentation - Nutrient Work Group.pdf - Oct 23

Nutrient Criteria Presentation - Rivers and Streams Nutrient Criteria.pdf - Oct 23

Nutrient Criteria - Colorado Rivers and Streams Nutrient Criteria Development Update.pdf - Oct 23

Nutrient Criteria Presentation - Macroinvertebrate MMI.pdf - Oct

2006

Nutrient Criteria Meeting Minutes.doc - Feb 2

Nutrient Criteria - State of Colorado Letter Regarding March 30 2006 Nutrient Criteria Development Meeting Summary.pdf - May 30

Nutrient Criteria - Nutrient Criteria Development Plan for Colorado.pdf - July 12

Nutrient Criteria - Colorado Lake Nutrient Criteria: A Rationale for Development.pdf - Oct

Nutrient Criteria - CU Nutrient Thresholds Study.zip - Oct

Nutrient Criteria - State of Colorado Letter Regarding Nov 1 2006 Nutrient Criteria Development Meeting Summary.pdf - Nov 13

Nutrient Criteria - State of Colorado Letter Regarding Nov 18 2004 Nutrient Criteria Development Meeting Summary.pdf - Nov 18

2002

Nutrient Criteria - Nutrient Criteria Development Plan for Colorado.pdf - Sept 26

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