NPDES MS4 Phase I Permit No. MN0061018 Annual Report for 2014 Activities City of Minneapolis and the Minneapolis Park & Recreation Board, Co-Permittees Prepared by: Minneapolis Public Works Department in conjunction with Minneapolis Park & Recreation Board July 31, 2015 NPDES MS4 PHASE I PERMIT ANNUAL REPORT FOR 2014 ACTIVITIES Acknowledgements Public Works-Surface Water & Sewers Paul Chellsen Lane Christianson Kevin Danen Lois Eberhart Paul Hudalla Kelly Moriarity Matt Stonich Jeremy Strehlo John Studtmann Dick Thornbloom Karl Westermeyer Public Works - Transportation Maintenance & Repair Steve Collin Minneapolis Park & Recreation Board Rachael Crabb Michael Perniel Debra Pilger MaryLynn Pulscher Health Department - Environmental Services Tom Frame Patrick Hanlon Regulatory Services Steve Kennedy Source: Minneapolis Public Works – Surface Water and Sewers ii Table of Contents Cover Page ...................................................................................................................................................... Signature Page ............................................................................................................................................... Certification and Resolution 2015R-303…………………………………………………………………... Acknowledgements ....................................................................................................................................... Table of Contents ........................................................................................................................................... Acronyms ........................................................................................................................................................ I. Executive Summary ................................................................................................................................... II. Storm Drain System Operational Management and Maintenance ........................................... III. Structural Controls Operational Management and Maintenance ........................................... IV. Disposal of Removed Substances ............................................................................................ V. Stormwater Management for New Developments and Construction ..................................... VI. Roadways ..................................................................................................................................... VII. Flood Mitigation ......................................................................................................................... VIII. Pesticides and Fertilizer Control ............................................................................................. IX. Illicit Discharges and Improper Disposal to Storm Sewer System ........................................ X. Storm Sewer Design for New Construction .............................................................................. XI. Public Education ......................................................................................................................... XII. Public Participation Process..................................................................................................... XIII. Coordination with Other Governmental Entities .................................................................... XIV. Stormwater Monitoring ............................................................................................................ Appendix A: Supplemental Documents Appendix B: Maps Appendix C: Public Comment iii ANNUAL REPORT FOR 2014 ACTIVITIES v NPDES MS4 PHASE I PERMIT ANNUAL REPORT FOR 2014 ACTIVITIES Executive Summary I. Executive Summary Report Objective This Report provides documentation and analysis of the Minneapolis Stormwater Management Program (SWMP) activities conducted during the previous year, 2014. The City and Minneapolis Park & Recreation Board departments that are responsible for the SWMP activities are jointly responsible for the completion of the required Permit submittals. Public Works provides program management and completes each Annual Report. Opportunities for public input into the SWMP and priorities is required, as is adoption by City Resolution of the Annual Report. This annual report is prepared in compliance with the requirements of National Pollutant Discharge Elimination System (NPDES) Permit No. MN0061018, a Municipal Separate Storm Sewer System (MS4) Phase I permit issued to City of Minneapolis (City) and the Minneapolis Park & Recreation Board (MPRB) as co-permittees. Permit No. MN0061018 was issued in December 2000 and reissued in January 2011. The Permit requires the implementation of approved stormwater management activities, referred to Stormwater Management Practices (SMPs), also known as Best Management Practices (BMPs). The NPDES program was created in 1990 by the United States Environmental Protection Agency (EPA) to safeguard public waters through the regulation of the discharge of pollutants to surface waters including lakes, streams, wetlands, and rivers. The Minnesota Pollution Control Agency (MPCA) is the local authority responsible for administering this program. Under this program, specific permits are issued to regulate different types of municipal, industrial activities and construction, and this report is related to the municipal program. As required under the 2011 reissued permit, a new SWMP that describes the City and MPRB SMPs was submitted to the MPCA in September 2011 for review and approval. Subsequent to the MPCA’s public comment period on the SWMP, revisions were submitted by the City to MPCA in May 2013, and the MPCA approved the SWMP in 2013. As outlined in Part V.A. of the Permit, the SWMP is based on an adaptive management system by which the Permittees continuously monitor, analyze and adjust the SWMP to achieve pollutant reductions. Using the adaptive management approach, revisions to the SWMP were made in 2014 that were primarily responsive to a 3-day field inspection in August 2013 by an EPA Inspection Team. The inspection, or audit, helped to identify opportunities for improvement regarding comprehensive training, written procedures and documentation, and availability of staff resources. 1 NPDES MS4 PHASE I PERMIT ANNUAL REPORT FOR 2014 ACTIVITIES Executive Summary Also as required under the 2011 reissued permit, application for reissuance was required at least 180 days before the permit’s expiration date of January 21, 2016. The deadline for application was July 25, 2015. The application was timely made, along with submittal of the revised SWMP and information and forms as required by MPCA. 2 NPDES MS4 PHASE I PERMIT ANNUAL REPORT FOR 2014 ACTIVITIES Storm Drain System Operational Management and Maintenance II. Storm Drain System Operational Management and Maintenance Program Objective The objective of the NPDES stormwater management program is to minimize the discharge of pollutants through the proper operational management and maintenance of the City’s storm drain system. Targeted pollutants include: . Total Suspended Solids (TSS) . Nutrients . Floatable Garbage Drainage Areas and Discharges The City of Minneapolis contributes stormwater runoff to a number of lakes, Minnehaha Creek, Bassett Creek, Shingle Creek and the Mississippi River. A map of the drainage areas that have been delineated according to topographic contours and the storm drain system is included in Appendix B. The population, size of drainage area, land uses, distribution, and runoff coefficients by body of receiving water are listed in Appendix A1. Program Overview The City’s storm drain system is operationally managed and maintained by the Operations section of the Public Works Department Surface Water and Sewers Division. Design engineering and regulatory issues are managed by the division’s Capital and Regulatory sections, respectively. Since 2012, the Operations section has been working on development of an Asset Management System (AMS) to help the City meet water quality targets and regulatory requirements, along with other objectives. The EPA became aware of the City’s AMS project during an inspection audit of the Minneapolis MS4 in 2013, and developed the project as a Case Study, stating “EPA is encouraged by the progress demonstrated by the City and hopes to work with other municipalities and regulators to achieve similar success.” (The document titled, “EPA Case Study: City of Minneapolis Stormwater Asset Management System” can be found in the Appendix.) The City’s goals in implementing the AMS include: 3 NPDES MS4 PHASE I PERMIT ANNUAL REPORT FOR 2014 ACTIVITIES Storm Drain System Operational Management and Maintenance • Identifying current state of assets and asset attributes (e.g., age, condition, etc.). • Develop a standardized rating process for assets and asset attributes (e.g., National Association of Sewer Services Companies (NASSCO) Pipeline Assessment and Certification Program (PACP)). • Identifying risk areas. • Identifying criticality of system. • Identify life-cycle costs. • Improve future decision making as a result of data and analysis (e.g., succession planning, level of maintenance response, capital improvement project (CIP) prioritization). • Improve documentation and recordkeeping of assets (e.g., Maximo software). • Improve coordination and communication. • Lower long-term operation and maintenance costs. • Improve regulatory compliance. • Use as a communication tool for staff and regulators for effective information