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Otak <br />in <br />Memorandum <br />To: Amie Roshak, PE, Senior Engineer <br />From: Mark Cole, PE, Project Manager <br />Project No.: Otak 21001A <br />Date: February 20, 2023 <br />Subject: Preliminary Milestone Schedule <br />Water Main Replacement "Y" Improvements, UP #3814 <br />COMPLETED <br />Notice to Proceed April 19, 2023 <br />1. <br />Site Investigation and Data Collection (April —July) <br />• Kick-off Meeting April 24, 2023 <br />• Review existing available project data (1-Week) April 28, 2023 <br />• Research/obtain existing utility records (3-Weeks) May 5, 2023 <br />• Perform surveying & mapping (7-Weeks) June 16, 2023 <br />• Perform geotechnical engineering/investigation (7-Weeks) July 21, 2023 <br />2. Preliminary Design (30%) (June - August) <br />• Evaluate replacement options and utility/design considerations (5-Weeks).. June 30, 2023 <br />• Preliminary review/discussion w/city staff (1-Week) July 9, 2023 <br />• Prepare design drawings and technical memorandum (3-Weeks). July 28, 2023 <br />• City review and comment on design documents (2-Weeks) August 11, 2023 <br />3. Final Design and Construction Document Preparation (September — January('24)) <br />60% Design and construction documents <br />• Design/preparation of construction documents (6-Weeks) Sept. 29, 2023 <br />• City document review and comment (2-Weeks) Oct. 13, 2023 <br />• Obtain project permits and agency approvals (4-Weeks) Nov. 9, 2023 <br />90% Design and construction documents <br />• Design/preparation of construction documents (7-Weeks) <br />• City document review and comment (3-Weeks) <br />100% Design and construction documents <br />• Design/preparation of construction documents (3-Weeks) <br />• City document review and comment (1-Week) <br />Nov. 20, 2023 <br />Dec. 12, 2023 <br />Jan. 9, 2024 <br />Jan. 17, 2024 <br />4. Construction Bid Solicitation and Contract Award (Feb. 2024 — April 2024) <br />• Assemble final PS&E and city authorization to bid (3-Weeks) Feb. 15, 2024 <br />• Project -Ad and Bid Opening (4-Weeks) March 12, 2024 <br />• Bid evaluation and award construction contract (4-Weeks) April 5, 2024 <br />5. Project Construction (May 2024 — October 2024) <br />• NTP and construction start May 1, 2024 <br />11241 Willows Road NE, Suite 200 I Redmond, WA 98052 I Phone 425.822.4446 I otak.com <br />s:11commonlutility projectslup 3814 water main replacement 34100 project management1110 consulting <br />contractslprelschmilestones 032023.docx <br />