HomeMy WebLinkAboutScope of Work - Add1 Public Works Department 3. Scope of Work SE 172nd STREET GREEN STORMWATER INFRASTRUCTURE PROJECT SWP-27-4037 SCOPE OF WORK The work involved under the terms of this contract document shall be full and complete installation of the facilities, as shown on the plans and as described in the construction specifications, to include but not be limited to: • Construction surveying, staking, and production of as-built plans, • Create a SPCC plan • Mobilization and demobilization • Traffic control, • Installing and maintaining adequate Temporary Erosion and Sediment Control measures, • Protecting of existing utilities, utility potholing and resolution of utility conflicts, • Protection, removal, and/or relocation of existing site features such as mailboxes, fences, pipes, trees, etc., • Sawcut, removal, and replacement of asphalt concrete pavement and cement concrete sidewalks, • Trench excavation, including dewatering, shoring, removal of any existing unsuitable material, disposal of excavated material, and treatment and/or removal of any contaminated soil and/or water, • Installing new storm system of approximately 4,459 linear feet of 4-inch, 8-inch, 12-inch and 18- inch diameter storm sewer pipe, including 55 catch basins and 1 custom rectangular structure, • CCTV inspect all installed storm sewer pipe. • Installing approximately 920 lineal feet of new 8-in ductile iron watermain with appurtenances, • Installing of approximately 359 linear feet of water main, 8-inch ductile iron pipe with polywrap, including gate valves, fire hydrant assemblies, thrust blocking and dead man anchor blocks, • Installation of approximately 5-1” water service connections and transfer of domestic services, • Connection of new water system to existing water system, • Installing approximately 160 linear feet of 12-inch sewer lateral • Installing of approximately 40 linear feet of sewer force main, 12-inch ductile iron pipe including fittings and thrust blocking, • Connection for new sewer lateral and sewer force main to existing systems, • Temporary sewer bypass • Installation of new 14 BioPod water quality units, including all necessary installation methods provided by the manufacture, • Trench backfill with suitable material and compaction to required standards, • Installing hot mix asphalt patch for utility trenches, • Installing concrete curbs and gutters, driveway entrances and curb ramps, • Installing pervious concrete sidewalks, • Installing roadway planter strips with seeded lawn, and irrigation system, Public Works Department 3. Scope of Work • Installing hot mix asphalt roadway pavement, overlay, and speed cushion, • Adjusting utility to grade, • Installing permanent signing and striping, • Performing landscape and property restoration. The estimated project cost is $4,000,000 to $4,400,000$4,500,000. A total of 125 working days is allowed for completion of the project. For Bid Item Descriptions see Special Provisions Section 1-09.14 Any contractor connected with this project shall comply with all Federal, State, County, and City codes and regulations applicable to such work and perform the work in accordance with the plans and specifications of this contract document. This Contract includes an Apprentice Utilization Requirement. Fifteen percent (15%) or more of project Labor Hours shall be performed by Apprentices unless Good Faith Efforts are accepted. Apprentice Utilization will be determined using the Department of Labor and Industries (L&I) online Prevailing Wage Intent & Affidavit (PWIA) system.