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Published byJames Norton Modified over 9 years ago
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Caltrans Trash Reduction Workplan
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SF Bay Trash Control Requirements Permit Driver CT Permit Attachment V – SF Bay Region-Specific Requirements Requirements Full Capture – “…..any single device or series of devices that trap all particles retained by a 5 mm mesh screen and has a design treatment capacity of not less than the peak flow rate from a 1-year, 1-hour storm in the subdrainage area.” Timely implementation within high trash generation areas: Install, operate and maintain full capture trash controls: –within CT R/W or –outside R/W in partnership with local MS4 permittees, and/or Enhance maintenance activities for storm drain systems in these catchments
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Map of Roadway Segments within Region 2 1,100 Centerline miles (7,600 lane miles) 2,500 Bridges 3 Rest Areas 49 Park-n-ride lots
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Trash Reduction Plan Objectives: Identify High Trash Generation Areas Prioritize areas for trash reduction measures (through retrofits, institutional controls, cooperative agreements, etc.) Identify trash reduction strategy within the Caltrans NPDES Permit cycle (2018) Identify trash reduction strategy for the long-term (post-2018)
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Significant Trash Generating Areas Screen high-trash generation areas based on: litter collection Adopt-a-highway Street Sweeping Develop Litter Collection Effort Map that serves as a starting point On-land visual assessment Low Medium High Very High 580 miles completed by 9/1/15
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Mapping High Trash Generating Areas
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Assessment within San Mateo County 1/3 complete = 59 Centerline miles completed High 1 segment; 1 ramp Medium 59 segments; 9 ramps Low 177 segments; 18 ramps 2/3 underway = 142 miles Route 1 Route 109 Route 114 Route 35 Route 82 Route 84 Route 9 Route 92
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Identifying Cooperative Implementation Opportunities within High Trash Generation Areas Capital funds for Design & Construction of Regional Treatment Controls Compliance with Mandates –TMDLs –Trash Control Control Measures: –Detention Basins –Infiltration Basins –Gross Solids Removal Devices –Media Filters –Biofiltration Swales/Strips –Infiltration Trenches –High Volume Infiltration Devices
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CRITERIA - Identifying Cooperative Implementation Opportunities Criteria for Participation in Regional Treatment Control Project: Reach Prioritization List Number of Pollutant Categories – TMDLs and Trash Project Stage – Concept, Project Approval/Env. Doc., Design Lead Agency Project Schedule Capital Costs – Design and Build Maintenance and Operations Costs Number of Stakeholders Amount of Runoff treated from CT Right of Way Type of BMP Number of acres treated
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Trash Load Reduction Workplan Schedule Next Steps: Complete remaining on-land visual assessments - Target 12/31/15 –520 miles + 400 ramps Maps of high trash generation areas and prioritized list of high trash generation areas – Target 12/31/15 Strategy for implementation of control measures - Target 12/31/15 –Within Caltrans right-of-way »Storm drain system retrofits »Enhance institutional measures –Outside Caltrans right-of-way »Partnering with local agencies/Caltrans Cooperative implementation strategy to implement Regional Treatment Controls
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