1	Idyl Wyld Regional Stormwater Facility City of Livonia
2	Overview Background Scope of Project Planning & alternative development Final Design Construction Project costs & grant funding
3	Background Livonia is part of 2 (out of 7) Rouge River subwatersheds Upper Rouge Subwatershed Middle 3 Rouge Subwatershed Active participant in both subwatershed planning efforts
4	Background Streambank erosion is significant problem throughout the City Fully developed, urbanized community Many enclosed drains & concrete-lined channels Erosion is threatening property Resident complaints Goals in Upper Rouge SWMP include: Reduce excessive peak flows Restore aesthetics Improve habitat
5	Background Livonia obtained a Rouge River Grant to demonstrate the effectiveness of a regional storm water retention/treatment facility at its Idyl Wyld golf course Project to reduce negative impacts of storm water runoff in an urbanized area Attenuating flows Reducing sedimentation Improving aesthetics and habitat
6
7
8	Scope of Project Characterize peak flows Computer model Develop alternatives Design Construct facilities Evaluate project performance
9
10
11
12
13	Preliminary Design - Objectives Minimize cost Simple operation & maintenance Address safety concerns Phasing – to max. funding opportunities Bio-remediation to extent possible Work within existing golf course Size constraints Play of course
14
15	Improvement 1 - Benefits Reduce erosion a sedimentation within Idyl Wyld as well as downstream Improve safety of water course Enhance aesthetics Reduce pollutants
16
17	Improvement 2 - Benefits Attenuate flows for a wide range of rainfall events Allow side-by-side comparison of off-line storage technologies Naturalize golf course, improve aesthetics Provide habitat Reduce pollutants
18
19	Improvement 3 - Benefits Reduce peak flows during large rainfall events 23% during the 10-yr, 1-hr storm Impact golf course portions of holes 5 and 17 submerged for 24-48 hours
20
21	Improvement 4 – Benefits Reduce peak flows during large rainfall events 27% during the 10-yr, 1-hr storm Impact golf course portions of holes 3, 5 and 17 submerged for 24-48 hours
22	Selected Project Combination of improvements 1, 2 & 3 Channel restructuring & armoring Off-line storage Weir/bridge structure Reduce peak flow 33% reduction during 10-yr, 1-hr storm Preliminary design completed in 2001
23
24
25	Final Design Final design delayed due to City’s funding concerns Second Rouge River grant Clean Michigan Initiative (CMI) grant Timing was critical and challenging: Second Rouge grant to be utilized by 12/31/04 MDEQ notified City of CMI application approval 12/03; IAA in 4/04; MDEQ did not approve design until 9/04
26	Final Design Had to balance concerns of each grant agency, i.e., Wayne Co. & MDEQ Overall concepts remained the same, but some details changed: Incorporation of 6 Newberry Weirs per MDEQ Softening of channel treatments per MDEQ MDEQ contributed design expertise via its own consultants – Roseboom & Watson
27
28
29
30
31
32
33
34
35
36	Construction Commenced in September 2004 Approximately 70% complete at this time Anticipated completion July 2005
37	Construction
38	Construction
39	Construction
40	Construction
41	Construction
42	Vegetation Establish a mixture of wetland plants similar to tall golf course rough tolerant of wet conditions Bulrush, sedges, rye as predominant plants Emergent wetland species Wildflowers Planting to be done in Spring 2005
43	Vegetation
44	Vegetation
45	Project Challenges Balancing grant funding sources Delays caused increased design costs Golf course made changes to their master plan, requiring modification of plans/specs MDEQ permitting process Weir structure was controversial Internal disagreement between divisions
46	Project Evaluation To commence in July 2005 Consists of: Photo-documentation Monitoring of channel cross section to determine if it remains stable
47	Construction Costs Construction: $1,399,500 Construction: $1,189,500 Const. observ. & admin: $ 156,000 Post-const. Evaluation: $ 54,000 Grant Funding: Round 1 Rouge Grant: $13,500/$15,000 Round 2 Rouge Grant: $345,850/$691,700 CMI Grant: $669,000/$892,000 73% Grant/27% Local Match
48	Questions