The SWMM models are in the directory SWMM are existing and proposed models used to develop Appendix B and Appendix D. The SWMM model un the directory Revised SWMM is an existing conditions SWMM model based on comments from John Curtin after the Existing Conditions model had been approved. This model should be used for future use and design. The comments that affected the existing conditions SWMM model were: • Conduit K14451-K14461: Constructed in 1954 was eliminated when the Lead Overpass was constructed. • Conduit K14462-K14461: This pipe was upsized to an 36” pipe by CPN 585193 in 2003? I have not found the “As-Built Record Drawings but I have attached the Drawings from when Lead & Coal were one project. • Conduit L14571-L14562: Is a 42” pipe per CPN 483591 Sht 2. • Junction L14JB3: The “As-Built” Survey was shot after the roof of the box was constructed and the street was repaved. The invert of the box is 4939.41 and the max depth is 8.9’. Unless someone volunteers to climb down into the box and measure the offsets from the floor (presuming the floor is level), I suggest that we use 4942.34 for the invert of the 48” pipes to west & 4940.87 for the invert of the CBC at the Box. These inverts were chosen after reviewing the SWS video of the Junction Box (See Profiles for Kathryn SD & William 72” SD).