Adobe 5 Collaborative Proposed Project Plan

Adobe 5 CollaborativeProposed Project Plan

February 23, 2004

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…”

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.

Adobe Upper Reach 5Proposed Project Plan

• II – Project Objectives/Project BenefitsII-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.

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

Adobe Upper Reach 5Proposed Project Plan

• Project Objectives/Project Benefits

II-3b Maintain the creek’s meander

(Oxbow issue)

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.”

Adobe Upper Reach 5Proposed Project Plan

• Project Objectives/Project Benefits

II-3g Improve stream percolation capacity

Other comment: Preserve water table

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”

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”

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.

Adobe Upper Reach 5Proposed Project Proposal

• III-B. Proposed Project ConstraintsEasements:- 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.

Adobe Upper Reach 5Proposed Project Proposal

• III-B. Proposed Project ConstraintsProposed 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.

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.

Adobe Upper Reach 5Proposed Project Proposal

• V. Proposed Project Schedule

Question of immediacy.

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.

Elements or Phases of aCapital Project

Project Proposal to Board

Project Planning - Draft Engineer's Report - Draft EIR - Final Engineer's Report - Final EIR

Project Design - Prepare Plans & Specifications - Obtain Permits - Obtain Rights-of-Way

Project Construction - Advertise & Award Bid - Construct Project

Jul-SepJan-Mar Apr-Jun Jul-Sep Oct-Dec Oct-Dec

* As stated in the Proposed Project Plan, this schedule assumes that the Board approves the project in spring 2004 and directs staff to begin work at the start of Fiscal Year 2004-2005.

Jan-Mar Apr-JunJan-Mar Apr-Jun

2006 2007Jul-Sep Oct-Dec

2004 2005Oct-DecJan-Mar Apr-Jun Jul-Sep

Adobe Reach 5 Proposed Project Schedule*