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Adobe 5 Collaborative Proposed Project Plan

Adobe 5 Collaborative Proposed Project Plan. February 23, 2004. Adobe Upper Reach 5 Proposed Project Plan. I-A. Why do this Project? I-B History and Background Page 2, Paragraph 3

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Adobe 5 Collaborative Proposed Project Plan

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  1. Adobe 5 CollaborativeProposed Project Plan February 23, 2004

  2. Adobe Upper Reach 5Proposed Project Plan • I-A. Why do this Project? • I-B History and Background • Page 2, Paragraph 3 “A design for Upper Adobe Creek Reach 5 was completed in 2002 and would have provided one-percent protection…”

  3. Adobe Upper Reach 5Proposed Project Plan ▪ I-B History and Background, pg.3, par 1 “…Construction of this work (Reaches 7-9) may/will be delayed until improvements are completed in upper Adobe Reach 5.” Suggestion: Add an objective that project work will re-evaluate hydraulics at Burke Rd. Bridge based on revised hydrology and revisit timing of bridge construction.

  4. Adobe Upper Reach 5Proposed Project Plan • II – Project Objectives/Project Benefits II-2. Open upper Reach 5 to eliminate backwater effects in Reach 6 (ACWG#2) by providing a scaled-down project (i.e. less than 1% flood protection) to a level of flooding acceptable to the community and local jurisdictions derived from the concept of minimum width design.” A separate submittal requested a complete rewrite of this statement.

  5. Adobe Upper Reach 5Proposed Project Plan • Project Objectives/Project Benefits II-2a through II-2e Agreement on nomenclature: West Edith Avenue Bridge West Edith Avenue West Fremont Road Edith Park

  6. Adobe Upper Reach 5Proposed Project Plan • Project Objectives/Project Benefits II-3b Maintain the creek’s meander (Oxbow issue)

  7. Adobe Upper Reach 5Proposed Project Plan • Project Objectives/Project Benefits II-3c Create stable side slopes that will minimize erosion. Other comment: “Soil, if possible, rocks or gabions if necessary.”

  8. Adobe Upper Reach 5Proposed Project Plan • Project Objectives/Project Benefits II-3g Improve stream percolation capacity Other comment: Preserve water table

  9. Adobe Upper Reach 5Proposed Project Plan • Project Objectives/Project Benefits Several additional comments added: 3h. Incorporate and protect flood plain. 3h. Create overflow terraces. 3i. Identify a “Reference Reach”

  10. Adobe Upper Reach 5Proposed Project Plan • Project Objectives/Project Benefits 4d. Recognize that removal of some existing hardscape should be a positive contribution to mitigation requirements Suggestion: Move to “Assumptions”

  11. Adobe Upper Reach 5Proposed Project Plan • Project Objectives/Project Benefits II-8. Provide for the access and safety of children and the community. ISSUES: ▪ Will project area downstream of W. Edith Avenue Bridge be open to the public? ▪ District must comply with design policies for new facilities to assure safety along creeks. ►Chain link fences/ split rail fences… ►Other options to be discussed and agreed upon with collaborative.

  12. Adobe Upper Reach 5Proposed Project Proposal • III-B. Proposed Project Constraints Easements: - Property owners (….) will dedicate the (additional) easements necessary for the project. • Obtain remaining (….) easements necessary for the project. • Reasonable plans will be developed and presented to property owners prior to requesting easements.

  13. Adobe Upper Reach 5Proposed Project Proposal • III-B. Proposed Project Constraints Proposed Revisions: • Obtain binding commitment to provide necessary easements before project initiation. • Easement will include top of existing bank to middle blue line as shown on 11/19/03 ACWG drawing (Attachment __), with additional easement area to be used only for mitigation planting, as necessary.

  14. Adobe Upper Reach 5Proposed Project Proposal • III-B. Proposed Project Constraints • The City of Los Altos, Town of Los Altos Hills, or the ACWG may request services of an outside consultant to review the plans during the development phase. Add language in Scope of Work section stating that reports and design plans produced by District will be made available to general public.

  15. Adobe Upper Reach 5Proposed Project Proposal • V. Proposed Project Schedule Question of immediacy.

  16. Adobe Upper Reach 5Proposed Project Plan • Next steps • Finalize Proposed Project Plan by week of March 15, 2004 to make April 20th Board of Director’s meeting.

  17. Adobe Reach 5 Proposed Project Schedule*

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