2005/08/24 Council Agenda Packet

EXHIBIT A-2 10 SCOPE OF WORK D. Alternative/Constructibility Workshop. Conduct three-day workshop to review each alternative design concept, design criteria and approaches for each alternative, optimization of the design concepts,permitting and easement requirements, constructibility, develop list of advantages and disadvantages of each alternative, discussion of cost drivers, and development of comparative engineering estimate of probable cost. A site visit of the workshop team will be made on the first day. Participants to include City, design team, geotechnical engineer, cost estimator and contractors (1-MWH Constructors, and 1- consultant). E. Develop Cost Estimates. Following completion of the alternatives/constructibility workshop, further develop preliminary cost estimates for the two most preferred alternatives. F. Prepare a Summary Memorandum. The alternative design concepts evaluations will be summarized in a memorandum describing the alternatives considered and identifying the recommended design. It will present the following: introduction and background information, description of existing conditions and original design concepts, alternatives, proposed construction methods and sequencing, permit requirements, and project implementation (i.e. preliminary cost estimates and schedule) for the preferred alternative. Identify the location and extent of any new temporary or permanent easements that are determined to be required for construction access. Meet with the City to receive comments and review the draft submittal. Eight (8) copies of the draft and eight(8)copies of the final memorandum will be provided to the City. Task 6. Permitting Assistance It is assumed that the City of Everett will continue to take the lead in permit acquisition and Regulatory agency consultation relative to permitting issues that may arise during evaluation of the alternative design alternatives. The MWH team will assist the City, as requested, in evaluating permitting issues as further described below. The following permitting assistance will be completed to help determine the potential environmental impacts and permitting implications of the various alternatives considered. The work will proceed only upon authorization from the City at their discretion A. Approximate Critical Areas Identification. A field inspection will be completed to review field conditions south of the existing dike road to approximate the location, extent, and conditions of any critical areas that may be impacted by a possible alternative involving a buried pipeline lying parallel to and south of the existing dike. This information will be presented on markups of existing aerial mapping but will not be sufficient to constitute formal wetland delineation in this area. Critical areas are defined by Snohomish County, the State of Washington, and the U.S. Army Corps of Engineers, and include wetlands, streams, habitat areas that may support endangered species, and shorelines. This approximation work will encompass wetlands estimated to be within 100 feet of the potential pipeline construction corridor. The extent of additional formal critical areas MWH Page 6 EVERETT PHASE 6-Supplemental Agreement No 2 8/5/05 EXHIBIT A-2—SCOPE OF WORK