CCBWQA 2007 Annual Report
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CHERRY CREEK BASIN WATER QUALITY AUTHORITY March 31, 2008 2 0 0 7 AN N U A L RE P O R T O N A CTIVITIES 2 0 0 7 CHERRY CREEK BASIN AN N U A L RE P O R T WATER QUALITY AUTHORITY O N Ac TIVITIES March 31, 2008 Prepared for CHERRY CREEK BASIN WATER QUALITY AUTHORITY Chuck Reid, Manager R.S Wells LLC 8390 E. Crescent Parkway, Suite 500 Greenwood Village, CO 80111-2814 P: 303.779.4525 F: 303.773.2050 http://www.cherrycreekbasin.org/cc_home.asp Prepared by BROWN AND CALDWELL 1697 Cole Boulevard, Suite 200 Golden, Colorado 80401 303.239.5400 Contributions from: GEI CONSULTANTS 5575 South Sycamore Street, Suite 101 Littleton, Colorado 80120-1141 JOHN C. HALEPASKA AND ASSOCIATES, INC. 26 West Dry Creek Circle, Suite 640 Littleton, Colorado 80120 LAND USE AgENCIES AND UTILITIES Within the Cherry Creek Basin CHEERY CREEK STEWARDSHIP PARTNERS http://www.cherry-creek.org 2007 Annual Report On Activities TABLE OF CONTENTS LIST OF FIGURES ...................................................................................................................................................... IV LIST OF TABLES .......................................................................................................................................................... V LIST OF ACRONYMS .................................................................................................................................................. XI EXECUTIVE SUMMARY ............................................................................................................................................... 1 Status of Water Quality ............................................................................................................................................ 1 2007 Water Quality Summary .......................................................................................................................... 3 Long-term Water Quality Summary .......................................................................................................................... 3 Background .............................................................................................................................................................. 5 Overview of Progress Made ..................................................................................................................................... 5 Progress Made in Specific Management Programs ................................................................................................. 6 Wastewater Facility Controls ........................................................................................................................... 6 Nonpoint and Regulated Stormwater Source Controls .................................................................................... 6 Trading Program ...................................................................................................................................................... 6 Public Education Actions and Partnerships .............................................................................................................. 7 Phased TMAL Implementation ................................................................................................................................. 7 Water Quality Monitoring .......................................................................................................................................... 7 Results and Conclusions .......................................................................................................................................... 8 1. PURPOSE OF THE ANNUAL REPORT ................................................................................................................. 1-1 Objective 1 – Document the Steps Taken in 2007 to Perform Required Tasks .................................................... 1-1 Objective 2 – Meet Control Regulation 72 Reporting Requirements ..................................................................... 1-1 Objective 3 – Present The Results of Monitoring Activities ................................................................................... 1-2 Objective 4 – Provide a Framework For a Review of Strategies ........................................................................... 1-2 Objective 5 – Provide an Abbreviated Report of 2007 Activities and Progress Made ........................................... 1-2 2. THE AUTHORITY ................................................................................................................................................... 2-1 2.1 History .......................................................................................................................................................... 2-1 2.2 Today’s Authority .......................................................................................................................................... 2-2 2.3 Work Plan ..................................................................................................................................................... 2-3 2.4 Financial Matters .......................................................................................................................................... 2-7 2.4.1 Funding Sources ............................................................................................................................... 2-7 2.4.2 Grants ............................................................................................................................................... 2-7 2.5 2007 Reference Documents ......................................................................................................................... 2-7 3. DESCRIPTION OF CHERRY CREEK RESERVOIR WATERSHED ...................................................................... 3-1 3.1 Water Quality History and Regulations ......................................................................................................... 3-1 3.2 Revisions to DRCOG Clean Water Plan Technical Appendix ...................................................................... 3-3 4. WASTEWATER FACILITY CONTROLS ................................................................................................................. 4-1 4.1 Wasteload Allocation .................................................................................................................................... 4-1 i P:\Data\GEN\CCBWQA\134511 for 2008\020 Annual Report\Final Draft\Annual Report Final 03-27-08.doc Table of Contents 2007 Annual Report On Activities 4.1.1 Monthly and Annual Loading ............................................................................................................ 4-1 4.1.2 Temporary Transfer and Reserve Pool Actions ................................................................................ 4-2 4.2 Wastewater Permits and Limits .................................................................................................................... 4-3 4.3 Site Location Approval Review ..................................................................................................................... 4-3 4.3.1 Site Application Follow-Ups .............................................................................................................. 4-4 4.4 Progress Made ............................................................................................................................................. 4-5 5. NONPOINT AND REGULATED STORMWATER SOURCE CONTROLS.............................................................. 5-1 5.1 Land Use Agency Implementation of Stormwater Permit Requirements ...................................................... 5-1 5.2 Cherry Creek Reservoir Watershed Stormwater Quality Requirements ....................................................... 5-1 5.2.1 Update Control Regulation 72 .......................................................................................................... 5-3 5.2.2 Develop a Guidance Document ........................................................................................................ 5-4 5.3 Land Use Application Review ....................................................................................................................... 5-5 5.4 Compliance with Cherry Creek Reservoir Watershed Stormwater Quality Requirements ............................ 5-6 5.4.1 Proprietary Best Management Practices .......................................................................................... 5-7 5.5 Phosphorus Facilitator .................................................................................................................................. 5-7 5.5.1 Water Quality Management Plans .................................................................................................... 5-8 5.5.2 BMP Review ..................................................................................................................................... 5-9 5.5.3 Proposed Change in Program Focus................................................................................................ 5-9 5.6 Capital Improvement Projects ....................................................................................................................... 5-9 5.6.1 Reservoir Destratification ................................................................................................................ 5-10 5.6.2 Cottonwood Creek Stream Reclamation