North County Transit District Storm Water Management Plan July 2019 Prepared For: 810 Mission Avenue Oceanside, CA 92054 Contents 1.0 Introduction ...................................................................................................................................... 8 1.1 NCTD Overview ............................................................................................................................. 8 1.2 Program Management ................................................................................................................ 10 1.2.1 Program Management Element .............................................................................................. 10 1.3 Regulatory Background ............................................................................................................... 11 1.4 NPDES Permit Program ............................................................................................................... 11 1.4.1 MS4 Permit Phase I Program .................................................................................................. 11 1.4.2 MS4 Permit Phase II Program ................................................................................................. 12 1.4.3 Industrial General Permit ........................................................................................................ 12 1.4.4 Construction General Permit .................................................................................................. 13 1.5 Non-NPDES Permits .................................................................................................................... 13 1.5.1 Erosion and Sediment Control Plan ........................................................................................ 13 1.6 NCTD Pollutants of Concern ........................................................................................................ 13 1.6.1 Storm Water Runoff ................................................................................................................ 13 2.0 Education and Outreach ................................................................................................................. 19 2.1 Phase II MS4 General Permit Requirements ............................................................................... 19 2.2 Pollution Prevention Compliance Activities ................................................................................ 19 2.2.1 Public Education and Outreach ............................................................................................... 19 2.2.2 Illicit Discharge Detection and Elimination Training ............................................................... 20 2.2.3 Pollution Prevention and Good Housekeeping Training ......................................................... 20 2.3 Public Involvement and Participation ......................................................................................... 20 3.0 Illicit Discharge Detection and Elimination ..................................................................................... 23 3.1 Phase II MS4 General Permit Requirements ............................................................................... 23 3.2 Illicit Discharge and Elimination Compliance Activities .............................................................. 23 3.2.1 Outfall Mapping ...................................................................................................................... 25 3.2.2 FRA and CPUC Inspections ...................................................................................................... 25 3.2.3 IDDE Field Investigation and Sampling Program ..................................................................... 25 4.0 Construction Site Storm Water Runoff Control .............................................................................. 26 4.1 Construction General Permit .................................................................................................. 26 4.2.2 Requirements for Construction Projects Not Covered by the Construction General Permit . 27 4.3 Construction Site Inventory ........................................................................................................ 29 4.4 Construction Plan Review and Approval Procedures ................................................................. 30 4.5 Construction Site Inspection and Enforcement .......................................................................... 31 ii 4.5.1 Inspection Responsibilities ...................................................................................................... 31 4.5.2 Phase II MS4 Permit Inspection Frequencies .......................................................................... 31 4.5.3 SWPPP Inspection Documentation Procedures ...................................................................... 31 4.5.4 CGP and ESCP Enforcement Actions ....................................................................................... 31 4.5.5 Non-Compliance Reporting ..................................................................................................... 32 4.6 Program Effectiveness Assessment ............................................................................................ 32 5.0 Pollution Prevention/Good Housekeeping ..................................................................................... 34 5.1 Phase II MS4 Permit Requirements ............................................................................................ 34 5.2 Inventory of Owned and Operated Facilities .............................................................................. 34 5.3 Facility Assessment ..................................................................................................................... 34 5.4 Facility-Specific Storm Water Pollution Prevention Plans .......................................................... 35 5.5 Inspections, Visual Monitoring, and Remedial Action ................................................................ 35 5.6 Storm Drain System Assessment and Prioritization.................................................................... 36 5.7 Storm Drain Maintenance Program ............................................................................................ 36 5.8 Operations and Maintenance (O&M) Activities ......................................................................... 37 5.9 Landscape Design and Maintenance .......................................................................................... 37 6.0 Post-Construction Storm Water Management Program ................................................................ 41 6.1 Phase II MS4 General Permit Requirements ............................................................................... 41 6.2 Site Design Measures .................................................................................................................. 41 6.3 Low Impact Development Standards .......................................................................................... 41 6.4 Operation and Maintenance Verification Program .................................................................... 42 7.0 Program Effectiveness Assessment and Improvement Plan (PEAIP) .............................................. 45 8.0 Total Maximum Daily Loads Compliance Requirements ................................................................ 47 9.0 Trash Provisions .............................................................................................................................. 49 10.0 References ...................................................................................................................................... 50 Appendices Appendix A: SWPPP Templates Appendix B: Erosion and Sediment Control Plan Template iii Figures Figure 1: NCTD Facilities.............................................................................................................................. 18 Figure 2: Storm Drain and Poster Art .......................................................................................................... 21 Figure 3: Indicator Parameters ................................................................................................................... 24 Figure 4: Action Level Concentrations for Indicator Parameters................................................................ 24 Figure 5: Vehicle Washing Station .............................................................................................................. 34 Figure 6: Visual Inspection of the Sprinter Right-of-Way ........................................................................... 35 Figure 7: Typical Maintenance Activity ....................................................................................................... 37 Figure 8: Post-Construction Swale BMP Culvert on NCTD Right-of-Way.................................................... 41 Figure 9: San Diego Region Watersheds ..................................................................................................... 47 Tables Table 1: NCTD Activities and Expected Pollutants of Concern (POCs) ....................................................... 15 Table 2: Minimum ESCP Requirements ..................................................................................................... 28 Table 3: Summary of Water Bodies with TMDLs near NCTD's ROW and/or Facilities ............................... 48 iv Acronyms