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City of Everett 01 12 16 - 1 <br />Port Gardner Storage Facility - Facility Construction Package WO# UP-3525 <br /> <br /> <br />01 12 16 - 1 WORK SEQUENCE <br />SECTION 01 12 16 - WORK SEQUENCE <br />PART 1 - GENERAL <br />1.1 SUMMARY <br />A. This Section specifies project milestones, construction sequencing requirements, work <br />restrictions, and constraints for the Work associated with Port Gardner Storage Facility – <br />Facility Construction Package. <br />B. Refer to EXHIBIT A – SECTION 01 12 16 SITE STORMWATER, DEWATERING & <br />SEWERAGE MANAGEMENT SEQUENCING AND CONSTRAINTS for information <br />related to this Section. <br />1.2 CONTINUITY OF PLANT OPERATIONS <br />A. The existing plant facilities are mostly not active. However, a swale dewatering pump <br />station which discharges East to a sanitary sewer manhole in Lower Norton Avenue, the <br />City material storage, site security lighting, sump pumping of the Area 25 basement, <br />sanitary sewer connecting the Naval Station and Lift Station 6, and other limited power <br />feeds are active and will need to be coordinated and maintained during the construction <br />of this project until no longer necessary by replacement and commissioning of new <br />facilities. <br />B. Lift Station 6 is an active pump station and will be replaced by Area 46 Lift Station 46. <br />The Contractor shall coordinate with the City staff to avoid any interference with City <br />activities. Lift Station 6 flows are tributary to Lift Station 7, which is north of Lift Station 6 <br />and will remain in service throughout and following the Facility Construction Package. <br />C. Maintain or provide temporary power to swale and sump pump equipment identified in <br />this Section and the Drawings. <br />D. Maintain or provide temporary pumping for rainwater entering all basins, including Area <br />30 former aeration basins. Area 30 is currently drained through City installed temporary <br />sump pump in the Area 25 basement. <br />E. A Temporary Power system has been installed under an earlier construction package for <br />use during the Facility Construction Package. This system is described in Attachment I – <br />Temporary Electrical System, Volume 7. At the end of construction, those portions of the <br />Temporary Power system that do not interfere with new Work may be left in place. <br />Coordinate with the Owner for maintenance of previously installed temporary power <br />system during and following construction. <br />F. An existing gravity sanitary sewer main serving the adjacent Naval Facility passes <br />through the site from west to east in the vicinity of proposed Lift Station 46. This main <br />will be re-routed and incorporated into the new facilities as shown on the Drawings. <br />Sewage flow in this main are estimated to be 15 gallons per minute and must not be <br />interrupted until the re-routed main and downstream facilities, including Lift Station 46, <br />are completed, operational, commissioned and accepted by the City. Refer to EXHIBIT <br />A – SECTION 01 12 16 for further information related to sewerage management during <br />construction.