140 likes | 251 Vues
This document outlines municipal maintenance activities aimed at reducing pollutants generated during city operations. Presented on April 24, 2006, by a collaborative work group, it emphasizes the implementation of Best Management Practices (BMPs) for effective pollutant source reduction. Key components include street sweeping, litter control, and stormwater management with clearly defined performance standards. The document urges municipalities to maintain accurate records and report on their efforts to improve water quality, with a focus on addressing specific pollutants such as sediments, nutrients, and trash.
E N D
Municipal Maintenance Activities Presented on April 24, 2006
Work Group Members • Kristy McCumby, City of Sunnyvale • John Fusco, SCVURPPP/EOA, Inc. • Lorenzo Smith, City of Hayward • Elisa Wilfong, CCCWP • Habte Kifle, Water Board
Goals and Objectives • Identify and Implement adequate BMPs to reduce source of pollutants during municipal maintenance activities • Keep records and report measurable results annually
Sediments Nutrients Pathogens Oil and grease Metals Organic Chemicals Pesticides Trash/Litter Vector production BOD/COD pH Others Pollutants Associated with Municipal Activities
Public Street and Road Sweeping and Cleaning Street/Road Repair & Maintenance Sidewalk/Plaza Maintenance Bridge & Structure Maintenance Landscape Maintenance Litter/Trash Control Catch Basin Inspection and Cleaning Stormwater Pump Station and ConveyanceSystems Rural Public Works Maintenance and Support Corporate Yard Maintenance Lagoon Maintenance Component Activities
Contribution Credit • Plain Black Type are Work Group’s product • Redlines/Strikeouts and/or Red Colored Type are Water Board Staff’s comments
Current Regulatory Status • Municipal maintenance has been one of the core program components • Programs develop their own Performance Standards under the current permits • Existing permits lack specific uniform Performance Standards to measure compliance
Major Expectations • Identify effective Performance Standards • More clearly specify implementation levels • Measure pollutant source removal, inspection, and cleanup efforts by record keeping and reporting annually
Street Sweeping Implementation • Assign street sweeping priorities as: • High Priority • Medium Priority • Low Priority • Street sweeping frequencies: • High Priority – average twice/month • Medium Priority – average once/month • Low Priority – twice/year before onset of rainy season • Where street sweeping is not technically feasible, Permittees are required to • Increase trash/litter removal and control efforts • Conduct seasonal efforts to remove leave from paved surfaces
Trash and Litter Control • Identify and assess potential litter/trash accumulation areas • Identify potential management actions to reduce trash levels at identified areas • Provide public trash receptacles in trash prone areas, most probably in high priority sweeping locations • Retrofit storm drain inlets in high traffic areas and pump stations • Cover grates and swirl separators • Improve public outreach
Pump Stations • Address water quality problems • Inventory existing pump stations • Control and remove trash • Implement monitoring of flows, DO, conductivity, other pollutants • Explore diversion to sanitary sewer (dry weather flows and first flush)
Comments Received from NGO • Street Sweeping • Cost-benefit analysis • Training expectations • Operation and Maintenance of Channels • Permit Activities • Monitor pump-station discharges • Inspect, maintain, and design or re-design outfalls to minimize erosion and sedimentation • Tidal Lagoon
Comments Receivedfrom NGO • Litter/Trash Clean Up • Report problem site on a GIS-based system • Require specific increased trash removal (e.g. 10% of problem areas and three sites per permit) • Catch Basin Inspection and Cleaning • Report locations on a GIS system • Increase cleaning frequency