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Illicit Discharge Detection and Elimination Track Down Program Appendix D OUTFALL AND MONITORING LOCATIONS GUIDANCE Procedures for Dry Weather Inspection, Sampling, Track Down and Elimination Dry weather: No precipitation/snow melt for at least 48 hours (minimum; consider longer during periods of prolonged wet weather). I. Choose Monitoring Locations (outfalls, interconnections, intraconnections) a. Review previous outfall inspections; identify monitoring locations/outfalls requiring inspection or any that may require re-inspection. b. Prepare for dry weather inspection: Monitoring Locations Inspection and Sampling Field Sheet, outfall report/current data for all to be inspected, storm system maps/route, clip board, pen. c. Each outfall has a detailed report listing dimensions/composition of the pipe or ditch and also visual observations of the flow, if it was flowing at the time data were collected. d. The outfall report should be updated to reflect any changes, especially the “Outfall Discharging” answer. i. Submit an Outfall Map Update Request form. OR ii. The Outfall Editor App can be used in the field to make real time changes to your outfall report, including a new picture. Do not change ownership or Outfall IDs. II. Inspect/Sample Monitoring Locations/Outfalls Dry weather inspections and sampling can be done at the same time. a. Inspection i. Inspect each monitoring location scheduled for the year. ii. If you cannot find the end of the pipe or ditch, or it is inaccessible or unsafe to reach, locate the first upstream catch basin/access point to determine whether there is flow. Note the inspection point on the form if it deviates from the mapped monitoring location. Make a note in your files for future inspections. iii. If no flow is present, complete Sections 1, 2 and 5 on the Monitoring Locations Inspection and Sampling Field Sheet. If flow is present, complete Sections 4 and 6 too. b. Sampling i. Schedule (or proceed with) sampling for monitoring locations discharging flow during dry weather based on completion of Sections 2, 4, 5 and 6 of the Monitoring Locations Inspection and Sampling Field Sheet. Complete Sections