1. Difficult Site Screening First Creek Case Study Prepared By Dr. Donald R. Reichmuth, P.E. Allan S. Potter, P.E. Geomax, P.C. September 2006

2. The Questions Is it better to provide an affordable, non-standard screen & fish passage method or do nothing? How can approval be more quickly obtained if non-standard methods are used?

3. Location Map First Creek Diversion

4. Diversion Site Looking Upstream- Gradient 5-6 %

5. Existing Headgate

6. Diversion Canal Dates From 1880s- No Fish Screen

7. Remnants of Concrete Dam

8. Site Access Road- 30% Grade Bridge over canal

9. The Site Constraints: 1. Not accessible with wheeled heavy equipment 2. No power available 3. Steep stream gradient 4. Considerable bedload & debris movement 5. Remote & subject to vandalism 6. Requires winter flow diversion 7. Summer flow must be proportionally split 8. Stream can go dry

13. Modular Construction Possible

15. Trash Rack Details

16. Group Feedback What have we missed?