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Page 1: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

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Page 2: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

Active recharge (not talking about passive)Talking about recharge (not direct use for now)

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Page 3: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

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Page 4: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

**Statement about unit cost may contradict the next slide on the costs**Variable hydrology and limited storage?  Army Corps dams, etc.  Peak flows attenuation

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Page 5: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

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Page 6: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

**Understand the projects behind this graph.  Unit costs look too good to be true.  Contradicts the challenges of high costs**Why aren’t we doing the low unit cost high yield projects now?  Whats stopping it?  OR are these costs not real?Add water supply costs

Pump, disinfect & distribute:  $100‐250/AFContaminant removal  

Metropolitan 2013/14 Tier 1 ratesUntreated Tier 1 is $593 for both CY 2013 and 2014Treated Tier 1 is $847 for CY 2013 and $890 for CY 2014.

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Page 7: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

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Page 8: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

*calculations on capture and recharge may not be consistent across projects23 projectsTotal Capital costs (2008 $) = $240 M

Sediment removal 5954channel improvement 654distributed 1346new centralized 5680centralized improvement 28300 Total: 41933.515,000 AF/yr from Cable Creek Basin and Spreading Grounds ($1,000,000 capital cost)?

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Page 9: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

Reimbursable services agreements (adopted by MWD in 2014) **see previous note**Elmer Avenue

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Page 10: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

Centralized more cost‐effective than distributedCapture and infiltrate more effective than direct‐use (this comment seems more like an opinion)

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Page 11: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

Evaluate the potential to fund projects using MWD’s reimbursable services program **check the criteria for this program and see if it matches.  For example, reimbursable services were meant for drought response.  Stormwater projects probably wouldn’t fit that category.  Plus, the link to production (quantity of supplies) are not yet determined**

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Page 12: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

Previously talked about distributed and centralized.  

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Page 13: IRP Workgroup Stormwater Slides 12-16-15 2016 background materials part 2...Microsoft PowerPoint - IRP Workgroup Stormwater Slides 12-16-15 Author: u08927 Created Date: 3/29/2016 3:53:19

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